Merge e264045642b9b7340e24f3d336fb638cd69c5375 into 007c134bb83968897ef9efe3d134f65ad337aa79

commit: 0a100ce6525ef46efe32fba3a55d9b606f97cd57
author: ermite · 5h ago · 2026-10-22 15:26 UTC
merge of: 007c134 + e264045 · diff against the first parent
signature: unsigned

85 files · +13289 -149

M .mockery.yml +20 -0


@@ -182,3 +182,23 @@ packages:
182	182		dir: internal/adapters/screencast
183	183		pkgname: screencast
184	184		filename: pipewire_opener_mock_test.go
	185	+
	186	+	github.com/bnema/neferwl/internal/adapters/xwayland:
	187	+	interfaces:
	188	+	starter:
	189	+	config:
	190	+	dir: internal/adapters/xwayland
	191	+	pkgname: xwayland
	192	+	filename: starter_mock_test.go
	193	+	github.com/bnema/neferwl/internal/adapters/wayland/xwm:
	194	+	interfaces:
	195	+	host:
	196	+	config:
	197	+	dir: internal/adapters/wayland/xwm
	198	+	pkgname: xwm
	199	+	filename: host_mock_test.go
	200	+	fdSource:
	201	+	config:
	202	+	dir: internal/adapters/wayland/xwm
	203	+	pkgname: xwm
	204	+	filename: fdsource_mock_test.go

M Makefile +9 -2

@@ -1,4 +1,4 @@
1		-	.PHONY: build test vet race mocks mocks-check spv-check fakes-check log-check arch adapter-imports check perf-check color-check bin tty logs pkg install
	1	+	.PHONY: build test vet race e2e-xwayland mocks mocks-check spv-check fakes-check log-check arch adapter-imports check perf-check color-check bin tty logs pkg install
2	2
3	3		# 0 runs until quit; set e.g. TTY_TIMEOUT=60s for a safety net.
4	4		TTY_TIMEOUT ?= 0

@@ -26,6 +26,7 @@ test:
26	26		CGO_ENABLED=0 go test ./...
27	27		vet:
28	28		CGO_ENABLED=0 go vet ./...
	29	+	CGO_ENABLED=0 go vet -tags xwayland ./internal/app
29	30		race:
30	31		# cgo is enabled only for the race test binary.
31	32		CGO_ENABLED=1 go test -race ./...

@@ -69,7 +70,8 @@ adapter-imports:
69	70		[ -z "$$bad" ] \|\| { echo "$$bad"; echo 'adapter imports another adapter: use ports or a shared library (Makefile ADAPTER_LIBS)' >&2; exit 1; }
70	71		# Fast, mandatory guards for tiled content publications and SHM copies.
71	72		perf-check:
72		-	CGO_ENABLED=0 go test ./internal/core ./internal/app ./internal/adapters/drm ./internal/adapters/headless ./internal/adapters/vulkan ./internal/adapters/wayland ./internal/adapters/outputkit/capture ./internal/adapters/screencast -run '^(TestAnimateAllocations\|TestPublishAllocations\|TestPublishSubscribersAllocations\|TestPublishStashSlideAllocations\|TestPublishOverviewAllocations\|TestPublishLeavingAllocations\|TestOutputRoutingAllocations\|TestReportSeenAllocations\|TestFrameLifecycleTransitionsAllocations\|TestFullscreenShownAllocations\|TestFrameDecisionAllocations\|TestCommitFrameAllocations\|TestColorPipelineAllocations\|TestShownBySnapshotAllocations\|TestFlipShowsAllocations\|TestMRUNoteFocusDoesNotAllocateWhenSettled\|TestDueFramesAllocations\|TestRenderSteadyStateAllocations\|TestRenderSteadyStateDMABufAllocations\|TestSceneOpaqueRegionAllocations\|TestSceneDeltaAllocations\|TestAccountFlipAllocations\|TestFlipDoneAllocations\|TestSceneWalkUnchangedTiledSHM\|TestTiledCommitPublishAllocations\|TestCapturedCommitApplyAllocations\|TestCapturedViewportApplyAllocations\|TestEffectiveInputEmptyTreeAllocations\|TestHeadlessTiledSHMCallbackAndCopyBudget\|TestReleaseHeldAllocations\|TestCommitDamageAllocations\|TestEmitContentAllocations\|TestPresentationPushAllocations\|TestAnimatingFrameSendAllocations\|TestContentBatchCycleAllocations\|TestWriteMappedAllocations\|TestCapturedForwardAllocations\|TestCommandForwardAllocations\|TestOutboxQueuedDeliveryAllocations\|TestCastFrameAllocations\|TestCastProducerAllocations\|TestCaptureCycleAllocations\|TestLogScenesAllocations\|TestOverviewNamedRowsAllocations\|TestBufferContentAllocations\|TestDueFramesFireScratch\|TestRetireSemaphoreAllocatesNothing)$$' -count=1
	73	+	CGO_ENABLED=0 go test ./internal/core ./internal/app ./internal/adapters/drm ./internal/adapters/headless ./internal/adapters/vulkan ./internal/adapters/wayland ./internal/adapters/outputkit/capture ./internal/adapters/screencast ./internal/adapters/wayland/xwm -run '^(TestAnimateAllocations\|TestPublishAllocations\|TestPublishSubscribersAllocations\|TestPublishStashSlideAllocations\|TestPublishOverviewAllocations\|TestPublishLeavingAllocations\|TestOutputRoutingAllocations\|TestReportSeenAllocations\|TestFrameLifecycleTransitionsAllocations\|TestFullscreenShownAllocations\|TestFrameDecisionAllocations\|TestCommitFrameAllocations\|TestColorPipelineAllocations\|TestShownBySnapshotAllocations\|TestFlipShowsAllocations\|TestMRUNoteFocusDoesNotAllocateWhenSettled\|TestDueFramesAllocations\|TestRenderSteadyStateAllocations\|TestRenderSteadyStateDMABufAllocations\|TestSceneOpaqueRegionAllocations\|TestSceneDeltaAllocations\|TestAccountFlipAllocations\|TestFlipDoneAllocations\|TestSceneWalkUnchangedTiledSHM\|TestTiledCommitPublishAllocations\|TestCapturedCommitApplyAllocations\|TestCapturedViewportApplyAllocations\|TestEffectiveInputEmptyTreeAllocations\|TestHeadlessTiledSHMCallbackAndCopyBudget\|TestReleaseHeldAllocations\|TestCommitDamageAllocations\|TestEmitContentAllocations\|TestPresentationPushAllocations\|TestAnimatingFrameSendAllocations\|TestContentBatchCycleAllocations\|TestWriteMappedAllocations\|TestCapturedForwardAllocations\|TestCommandForwardAllocations\|TestOutboxQueuedDeliveryAllocations\|TestCastFrameAllocations\|TestCastProducerAllocations\|TestCaptureCycleAllocations\|TestLogScenesAllocations\|TestOverviewNamedRowsAllocations\|TestBufferContentAllocations\|TestDueFramesFireScratch\|TestRetireSemaphoreAllocatesNothing\|TestTableLookupAllocations\|TestTableInsertRemoveAllocations\|TestPropertyUnchangedAllocations\|TestDispatchAllocations\|TestConfigureFlushAllocations\|TestFocusAllocations\|TestSpaceAllocations\|TestUnmanagedGeometryAllocations\|TestFocusInUnmanagedAllocations\|TestUnmanagedPublishAllocations\|TestUnmanagedHitAllocations\|TestOverrideMovedUnchangedAllocations)$$' -count=1
	74	+	CGO_ENABLED=0 go test -tags xturbo_poison ./internal/adapters/wayland/xwm -count=1
73	75		check: vet test arch fakes-check log-check perf-check
74	76
75	77		# On-demand SDR/HDR colour check with examples/testpattern on a headless

@@ -77,6 +79,11 @@ check: vet test arch fakes-check log-check perf-check
77	79		color-check:
78	80		CGO_ENABLED=0 go test -tags colorcheck ./internal/app -run '^TestColorCheck' -count=1 -v
79	81
	82	+	# End-to-end test of the built-in XWM: a real Xwayland and an X11 probe on a
	83	+	# headless NeferWL. Needs Xwayland and a GPU; not part of check.
	84	+	e2e-xwayland:
	85	+	CGO_ENABLED=1 go test -tags xwayland -race ./internal/app -run TestXwayland -count=1 -v
	86	+
80	87		# Arch package of the committed HEAD (packaging/arch/PKGBUILD). Go modules
81	88		# come from the module proxy in prepare(); the build itself runs offline.
82	89		# pacman-ordered version: 0.0.0.r<commits>.g<hash>; a tag replaces 0.0.0.

M README.md +1 -1


@@ -149,7 +149,7 @@ See [Configuration](docs/config.md) for all keys, actions, bindings and automati
149	149		- Explicit sync carries client fences to the GPU and KMS, enabled by default with no flag. HDR10 on capable displays includes configurable SDR brightness.
150	150		- Separate workspaces and fractional scale per output; workspaces move when a monitor is unplugged and return when it reconnects.
151	151		- Hidden apps get frame callbacks once per second and the suspended state, whether on another workspace, in a hidden stash, off screen or under fullscreen. Captured windows keep their output's refresh rate.
152		-	- Steam and other X11 clients run through xwayland-satellite; Wine can run natively on Wayland.
	152	+	- Steam and other X11 clients run through xwayland-satellite, or through the experimental built-in window manager (`xwayland = builtin`; shows menus, popups and tooltips; no clipboard or XSETTINGS yet). Wine can run natively on Wayland.
153	153
154	154		### Windows and workspaces
155	155

M docs/config.md +3 -1


@@ -27,7 +27,7 @@ See [examples/config](../examples/config) for every key with its default.
27	27		\| `terminal` \| `$TERMINAL` or `foot` \| Terminal command \|
28	28		\| `terminal.auto-open` \| `first` \| Open a terminal on the first workspace (`first`), on every empty one (`all`), or never (`off`) \|
29	29		\| `startup` \| none \| Commands run at session start, separated by `;` \|
30		-	\| `xwayland` \| `xwayland-satellite` \| X11 support; `off` disables it \|
	30	+	\| `xwayland` \| `satellite` \| `off`, `satellite`, `builtin` or a satellite binary path \|
31	31		\| `background` \| `#111111` \| Background color \|
32	32		\| `border.radius` \| `0` \| Corner radius in logical pixels, `0` to `64`; floats always, tiles only with gaps \|
33	33		\| `border.width` \| `2` \| Border width in pixels; `0` hides borders \|

@@ -103,6 +103,8 @@ destination output, even if that output has no windows. Same-screen workspace
103	103		switches and mouse focus do not trigger a flash.
104	104		It runs when `animations = on`.
105	105
	106	+	`xwayland = satellite` uses `xwayland-satellite` from `PATH`; a custom path also selects satellite. `off` disables X11. `builtin` (experimental): neferwl starts `Xwayland` itself and manages X11 windows as its window manager: windows tile, take focus, close with `close-window` (`WM_DELETE_WINDOW`) and show their title and class. Menus, popups and tooltips (override-redirect windows) are drawn above their window at the right place and never appear as windows in `neferwl state`. Clipboard and XSETTINGS are not supported; use `satellite` if you need them.
	107	+
106	108		## Automatic terminal
107	109
108	110		The command comes from `terminal`, then `$TERMINAL`, then `foot`.

M docs/desktop.md +3 -1


@@ -52,12 +52,14 @@ Candidate popups are not drawn yet.
52	52
53	53		## X11 apps
54	54
55		-	X11 apps such as Steam run through [xwayland-satellite](https://github.com/Supreeeme/xwayland-satellite) 0.7+, found in `PATH`. NeferWL starts it when the first X11 app connects; do not start it yourself.
	55	+	By default, X11 apps such as Steam run through [xwayland-satellite](https://github.com/Supreeeme/xwayland-satellite) 0.7+, found in `PATH`. NeferWL starts it when the first X11 app connects; do not start it yourself.
56	56
57	57		```text
58	58		xwayland = off # no X11 support
59	59		```
60	60
	61	+	With `xwayland = builtin` (experimental), neferwl starts `Xwayland` itself and manages X11 windows: they tile, take focus and close like Wayland windows. Menus, popups and tooltips of X11 apps are shown above their window and do not take the keyboard focus. Clipboard and XSETTINGS are not supported; use `satellite` if you need them.
	62	+
61	63		## Session locking
62	64
63	65		NeferWL supports `ext-session-lock-v1` with an external locker such as swaylock or hyprlock. The locker checks the password; NeferWL hides the desktop and blocks input.

M docs/dev/headless.md +16 -0


@@ -62,6 +62,22 @@ WAYLAND_DISPLAY=<name> go run ./examples/testime -preedit nihon -commit 日本
62	62
63	63		`-count <n>` exits after n commits; `-delay` sets the time between preedit and commit.
64	64
	65	+	## X11 check
	66	+
	67	+	`make e2e-xwayland` runs the end-to-end test of the built-in window manager (`xwayland = builtin`). It is behind the `xwayland` build tag, so `go test ./...` and `make check` only compile it (`go vet -tags xwayland`). It needs `Xwayland` on `PATH` and a GPU, and skips without Xwayland.
	68	+
	69	+	The test starts a headless NeferWL with a real `Xwayland` on the first free X display (a live session's `:0` stays untouched) and runs `internal/app/testdata/x11probe`, a small X11 client (`-class`, `-title`, `-size`, `-sleep`) that paints its window green, prints `mapped WxH` and `focus`, and exits 0 on `WM_DELETE_WINDOW`. With `-override` it also maps a magenta override-redirect window (`-override-at`, `-override-size`, `-override-type menu\|tooltip`, `-override-for`, `-override-shape`, `-override-dismiss-on-focusout`) and prints `override mapped`, `override unmapped` or `dismissed`. It checks:
	70	+
	71	+	- the state lists one visible `X11Probe` window with the probe's pid, and the screenshot is mostly green inside its tile;
	72	+	- the probe receives focus;
	73	+	- a second probe tiles beside the first;
	74	+	- `key Super+q` closes the focused probe within 2 seconds and the state drops to one window;
	75	+	- an override-redirect menu is drawn magenta above the green toplevel at its X position, is not listed in the state, leaves focus on the toplevel and disappears from the screenshot once the probe unmaps it;
	76	+	- a menu is dismissed when its owner gets `FocusOut` because another X11 window took the focus;
	77	+	- a menu with an empty input shape is still drawn and still not a window.
	78	+
	79	+	Run it by hand with `go test -tags xwayland -race ./internal/app -run TestXwayland -count=1 -v`.
	80	+
65	81		## Colour check
66	82
67	83		`make color-check` renders `examples/testpattern` on a headless output and checks the colours, in SDR and in HDR (`--headless-hdr`). It needs a GPU and `/dev/udmabuf`, and is not part of `make check`.

M go.mod +4 -3


@@ -3,10 +3,11 @@ module github.com/bnema/neferwl
3	3		go 1.27
4	4
5	5		require (
	6	+	bnema.dev/xturbo v0.1.0
6	7		github.com/bnema/go-wayland-bindings v0.1.0
7	8		github.com/bnema/kvconf v0.1.2
8		-	github.com/bnema/purego v0.13.0-bnema.1
9		-	github.com/bnema/purego-libwayland v0.11.0
	9	+	github.com/bnema/purego v0.13.0-bnema.2
	10	+	github.com/bnema/purego-libwayland v0.12.0
10	11		github.com/bnema/purego-pipewire v0.2.0
11	12		github.com/bnema/purego-vulkan v0.6.0
12	13		github.com/bnema/wlturbo v0.5.0

@@ -16,7 +17,7 @@ require (
16	17		github.com/rs/zerolog v1.35.1
17	18		github.com/stretchr/testify v1.12.1
18	19		golang.org/x/image v0.46.0
19		-	golang.org/x/sys v0.48.0
	20	+	golang.org/x/sys v0.49.0
20	21		golang.org/x/term v0.46.0
21	22		)
22	23

M go.sum +8 -6 generated file: collapsed

load diff

M internal/adapters/config/config.go +8 -4


@@ -167,7 +167,7 @@ func Defaults() ports.Config {
167	167		// Hint mode is experimental: off unless the config turns it on.
168	168		c.Hint.Enable = false
169	169		c.Hint.TextClick = ports.ModCtrl \| ports.ModShift
170		-	c.Xwayland = "xwayland-satellite"
	170	+	c.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: "xwayland-satellite"}
171	171		c.Background.Color = "#111111"
172	172		c.Floating.Dim = 0.3
173	173		c.Stash.Width = 80

@@ -726,11 +726,15 @@ func set(c *ports.Config, key, v string) error {
726	726		case "xwayland":
727	727		switch {
728	728		case v == "off":
729		-	c.Xwayland = ""
	729	+	c.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandOff}
	730	+	case v == "satellite":
	731	+	c.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: "xwayland-satellite"}
	732	+	case v == "builtin":
	733	+	c.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandBuiltin, Binary: "Xwayland"}
730	734		case v == "" \|\| strings.ContainsAny(v, " \t"):
731		-	return fmt.Errorf("must be off or the xwayland-satellite program")
	735	+	return fmt.Errorf("must be off, satellite, builtin or a satellite program")
732	736		default:
733		-	c.Xwayland = v
	737	+	c.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: v}
734	738		}
735	739		case "background":
736	740		if !color.MatchString(v) {

M internal/adapters/config/config_test.go +16 -6


@@ -340,14 +340,24 @@ func TestWorkspacePrevNextAction(t *testing.T) {
340	340		}
341	341
342	342		func TestXwayland(t *testing.T) {
343		-	if Defaults().Xwayland != "xwayland-satellite" {
	343	+	if Defaults().Xwayland != (ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: "xwayland-satellite"}) {
344	344		t.Fatal(Defaults().Xwayland)
345	345		}
346		-	if c, w := parseString(t, "xwayland = off"); c.Xwayland != "" \|\| len(w) != 0 {
347		-	t.Fatal(c.Xwayland, w)
348		-	}
349		-	if c, w := parseString(t, "xwayland = /opt/xwls"); c.Xwayland != "/opt/xwls" \|\| len(w) != 0 {
350		-	t.Fatal(c.Xwayland, w)
	346	+	for _, tt := range []struct {
	347	+	value string
	348	+	want ports.XwaylandConfig
	349	+	}{
	350	+	{"off", ports.XwaylandConfig{Backend: ports.XwaylandOff}},
	351	+	{"satellite", ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: "xwayland-satellite"}},
	352	+	{"builtin", ports.XwaylandConfig{Backend: ports.XwaylandBuiltin, Binary: "Xwayland"}},
	353	+	{"/opt/xwls", ports.XwaylandConfig{Backend: ports.XwaylandSatellite, Binary: "/opt/xwls"}},
	354	+	} {
	355	+	t.Run(tt.value, func(t *testing.T) {
	356	+	c, w := parseString(t, "xwayland = "+tt.value)
	357	+	if c.Xwayland != tt.want \|\| len(w) != 0 {
	358	+	t.Fatal(c.Xwayland, w)
	359	+	}
	360	+	})
351	361		}
352	362		}
353	363

M internal/adapters/vulkan/capture_test.go +3 -0


@@ -358,6 +358,9 @@ func openFDs(t *testing.T) int {
358	358		// slot keeps its sync file for every lease. No mock stands in the measured
359	359		// closure.
360	360		func TestCaptureCycleAllocations(t *testing.T) {
	361	+	if raceEnabled {
	362	+	t.Skip("allocation budgets are not stable under the race runtime")
	363	+	}
361	364		for _, tc := range []struct {
362	365		name string
363	366		new func(testing.T) Renderer

A internal/adapters/vulkan/norace_test.go +5 -0

@@ -0,0 +1,5 @@
	1	+	//go:build !race
	2	+
	3	+	package vulkan
	4	+
	5	+	const raceEnabled = false

A internal/adapters/vulkan/race_test.go +8 -0

@@ -0,0 +1,8 @@
	1	+	//go:build race
	2	+
	3	+	package vulkan
	4	+
	5	+	// raceEnabled: sync.Pool drops items at random under the race runtime, so the
	6	+	// allocation budgets of calls that go through purego cannot hold. perf-check
	7	+	// runs them without it.
	8	+	const raceEnabled = true

M internal/adapters/vulkan/scene_perf_test.go +6 -0


@@ -16,6 +16,9 @@ import (
16	16		// A new scene Seq with one of two windows moved is a partial redraw seeded by
17	17		// sceneDelta and allocates nothing either.
18	18		func TestRenderSteadyStateAllocations(t *testing.T) {
	19	+	if raceEnabled {
	20	+	t.Skip("allocation budgets are not stable under the race runtime")
	21	+	}
19	22		for _, tc := range []struct {
20	23		name string
21	24		transform ports.BufferTransform

@@ -145,6 +148,9 @@ func TestRenderSteadyStateAllocations(t *testing.T) {
145	148		// keeps one alloc of headroom for drivers whose import path differs.
146	149		// Skipped without a GPU or /dev/udmabuf.
147	150		func TestRenderSteadyStateDMABufAllocations(t *testing.T) {
	151	+	if raceEnabled {
	152	+	t.Skip("allocation budgets are not stable under the race runtime")
	153	+	}
148	154		r, err := New(80, 32)
149	155		if err != nil {
150	156		t.Skipf("Vulkan unavailable: %v", err)

M internal/adapters/wayland/activation.go +3 -3


@@ -66,7 +66,7 @@ func (a activation) Activate(_ xdgactivation.ActivationV1, token string, surf
66	66		}
67	67		var w *window
68	68		if reason == "" {
69		-	if w = s.windows[state.root().windowID()]; w == nil \|\| w.toplevel == nil \|\| !w.mapped {
	69	+	if w = s.windows[state.root().windowID()]; w == nil \|\| !w.isToplevel() \|\| !w.mapped {
70	70		reason = "not_toplevel"
71	71		}
72	72		}

@@ -116,8 +116,8 @@ func (t tokenRequest) Commit(r xdgactivation.ActivationTokenV1) {
116	116
117	117		// focusClient is the client with the keyboard focus.
118	118		func (s *Server) focusClient() server.Client {
119		-	if w := s.windows[s.seat.focused]; w != nil && w.xdg.resource.Resource.Alive() {
120		-	return w.xdg.resource.Client()
	119	+	if w := s.windows[s.seat.focused]; w != nil && w.alive() {
	120	+	return w.client()
121	121		}
122	122		if l := s.layers[s.seat.focused]; l != nil && l.resource.Resource.Alive() {
123	123		return l.resource.Client()

M internal/adapters/wayland/constraints.go +14 -13


@@ -61,11 +61,11 @@ func (h pointerWarp) WarpPointer(r pointerwarp.WpPointerWarpV1, surf wayland.S
61	61		return
62	62		}
63	63		w := s.windows[s.seat.pointerFocus]
64		-	if w == nil \|\| !w.mapped \|\| w.xdg.resource.Client() != r.Client() \|\| s.surfaces[surf.Resource] != w.xdg.surface {
	64	+	if w == nil \|\| !w.mapped \|\| w.client() != r.Client() \|\| s.surfaces[surf.Resource] != w.surf() {
65	65		return
66	66		}
67	67		// Surface-local to window-local (core's, from the geometry origin).
68		-	g := w.xdg.geometry
	68	+	g := w.geometry()
69	69		s.emit(ports.PointerWarp{ID: w.id, X: x.Float() - float64(g.X), Y: y.Float() - float64(g.Y)})
70	70		}
71	71

@@ -80,12 +80,12 @@ func (s Server) relativeMotion(w window, c ports.PointerMotionTo) bool {
80	80		if s.protected() \|\| c.DX == 0 && c.DY == 0 && c.UnaccelDX == 0 && c.UnaccelDY == 0 {
81	81		return false
82	82		}
83		-	if !w.mapped \|\| !w.xdg.resource.Resource.Alive() {
	83	+	if !w.mapped \|\| !w.alive() {
84	84		return false
85	85		}
86	86		sent := false
87	87		usec := uint64(c.Time / time.Microsecond)
88		-	for _, rel := range s.relatives[w.xdg.resource.Client()] {
	88	+	for _, rel := range s.relatives[w.client()] {
89	89		if rel.Resource.Alive() {
90	90		rel.SendRelativeMotion(uint32(usec>>32), uint32(usec), server.FixedFromFloat(c.DX), server.FixedFromFloat(c.DY), server.FixedFromFloat(c.UnaccelDX), server.FixedFromFloat(c.UnaccelDY))
91	91		sent = true

@@ -272,7 +272,7 @@ func (s *Server) updateConstraint() {
272	272		}
273	273		var want *constraint
274	274		if w := s.windows[s.seat.pointerFocus]; w != nil && w.mapped && s.seat.pointerFocus == s.seat.focused {
275		-	if c := s.constraints[w.xdg.surface]; c != nil && !c.defunct && (c.active \|\| c.contains(w)) {
	275	+	if c := s.constraints[w.surf()]; c != nil && !c.defunct && (c.active \|\| c.contains(w)) {
276	276		want = c
277	277		}
278	278		}

@@ -298,8 +298,8 @@ func (s Server) emitConstraint(c constraint) {
298	298		if s.protected() {
299	299		return
300	300		}
301		-	x := c.surface.xdg
302		-	if x == nil \|\| x.window == nil {
	301	+	w := c.surface.toplevelWindow()
	302	+	if w == nil {
303	303		return
304	304		}
305	305		mode := ports.ConstraintConfine

@@ -308,8 +308,9 @@ func (s Server) emitConstraint(c constraint) {
308	308		}
309	309		r := c.region
310	310		if r.W > 0 && r.H > 0 {
311		-	r.X -= x.geometry.X
312		-	r.Y -= x.geometry.Y
	311	+	g := w.geometry()
	312	+	r.X -= g.X
	313	+	r.Y -= g.Y
313	314		}
314	315		// Core supports one confinement rect, so this bounds the intersection;
315	316		// contains uses the exact input region to decide activation.

@@ -333,17 +334,17 @@ func (s Server) emitConstraint(c constraint) {
333	334		r = box
334	335		}
335	336		}
336		-	s.emit(ports.PointerConstrained{ID: x.window.id, PointerConstraint: ports.PointerConstraint{Mode: mode, Rect: r}})
	337	+	s.emit(ports.PointerConstrained{ID: w.id, PointerConstraint: ports.PointerConstraint{Mode: mode, Rect: r}})
337	338		}
338	339
339	340		// contains reports whether the pointer is in the region: a constraint
340	341		// activates only there, so it never warps the pointer.
341	342		func (c constraint) contains(w window) bool {
342	343		r := c.region
343		-	x, y := w.surfacePoint(w.xdg.server.seat.pointerX, w.xdg.server.seat.pointerY)
	344	+	x, y := w.surfacePoint(c.surface.server.seat.pointerX, c.surface.server.seat.pointerY)
344	345		all, rects := c.surface.effectiveInput()
345	346		if !all {
346		-	localX, localY := x-float64(w.xdg.geometry.X), y-float64(w.xdg.geometry.Y)
	347	+	localX, localY := x-float64(w.geometry().X), y-float64(w.geometry().Y)
347	348		inside := false
348	349		for _, input := range rects {
349	350		if localX >= float64(input.X) && localX < float64(input.X+input.W) && localY >= float64(input.Y) && localY < float64(input.Y+input.H) {

@@ -363,5 +364,5 @@ func (c constraint) contains(w window) bool {
363	364
364	365		// locked reports whether the window's pointer is locked.
365	366		func (s Server) locked(w window) bool {
366		-	return !s.protected() && s.constraint != nil && s.constraint.lock != nil && s.constraint.surface == w.xdg.surface
	367	+	return !s.protected() && s.constraint != nil && s.constraint.lock != nil && s.constraint.surface == w.surf()
367	368		}

M internal/adapters/wayland/decoration.go +1 -1


@@ -80,7 +80,7 @@ func (d decoration) UnsetMode(r xdgdecoration.ZxdgToplevelDecorationV1)
80	80		func (d decoration) send(r xdgdecoration.ZxdgToplevelDecorationV1) {
81	81		r.SendConfigure(uint32(xdgdecoration.ZxdgToplevelDecorationV1ModeServerSide))
82	82		for _, w := range d.s.windows {
83		-	if w.toplevel == d.toplevel && w.hasLast && w.toplevel.Resource.Alive() && w.xdg.resource.Resource.Alive() {
	83	+	if w.toplevel == d.toplevel && w.hasLast && w.toplevelAlive() && w.alive() {
84	84		w.sendConfigure()
85	85		return
86	86		}

M internal/adapters/wayland/dialog.go +1 -1


@@ -77,6 +77,6 @@ func (w *window) setModal(modal bool) {
77	77		}
78	78		w.modal = modal
79	79		if w.mapped {
80		-	w.xdg.server.emit(ports.WindowModal{ID: w.id, Modal: modal})
	80	+	w.srv().emit(ports.WindowModal{ID: w.id, Modal: modal})
81	81		}
82	82		}

M internal/adapters/wayland/dmabuf.go +3 -2


@@ -223,10 +223,11 @@ func (g dmabufGlobal) fullscreenOutput(surf surface) (string, bool) {
223	223		return "", false
224	224		}
225	225		root := toplevelRoot(surf)
226		-	if root.xdg == nil \|\| root.xdg.window == nil \|\| !root.xdg.window.hasLast \|\| !root.xdg.window.last.Fullscreen \|\| g.server.invisible(surf) {
	226	+	w := root.toplevelWindow()
	227	+	if w == nil \|\| !w.hasLast \|\| !w.last.Fullscreen \|\| g.server.invisible(surf) {
227	228		return "", false
228	229		}
229		-	return root.xdg.window.last.Output, true
	230	+	return w.last.Output, true
230	231		}
231	232
232	233		// scanoutFor is the scanout offer for a surface: its window is fullscreen

M internal/adapters/wayland/extforeigntoplevel.go +1 -1


@@ -72,7 +72,7 @@ func (extToplevelList) Destroy(ext.ExtForeignToplevelListV1) {}
72	72		func (s *Server) mappedToplevels() []ports.WindowID {
73	73		ids := make([]ports.WindowID, 0, len(s.windows))
74	74		for id, w := range s.windows {
75		-	if w.toplevel != nil && w.mapped {
	75	+	if w.isToplevel() && w.mapped {
76	76		ids = append(ids, id)
77	77		}
78	78		}

M internal/adapters/wayland/foreigntoplevel.go +6 -6


@@ -44,7 +44,7 @@ func registerForeignToplevel(d server.Display, s Server) error {
44	44		r.OnDestroy = func() { s.toplevelManagers = removeItem(s.toplevelManagers, m) }
45	45		ids := make([]ports.WindowID, 0, len(s.windows))
46	46		for id, w := range s.windows {
47		-	if w.toplevel != nil && w.mapped {
	47	+	if w.isToplevel() && w.mapped {
48	48		ids = append(ids, id)
49	49		}
50	50		}

@@ -186,7 +186,7 @@ func toplevelState(w *window, version int32) []byte {
186	186
187	187		// toplevelChanged updates every manager after w mapped or changed.
188	188		func (s Server) toplevelChanged(w window) {
189		-	if w.toplevel == nil \|\| !w.mapped {
	189	+	if !w.isToplevel() \|\| !w.mapped {
190	190		return
191	191		}
192	192		for _, m := range s.toplevelManagers {

@@ -220,7 +220,7 @@ func (s *Server) refreshToplevels() {
220	220		for _, l := range s.extToplevelLists {
221	221		for id, h := range l.handles {
222	222		w := s.windows[id]
223		-	if h.closed \|\| w == nil \|\| w.toplevel == nil \|\| !w.mapped {
	223	+	if h.closed \|\| w == nil \|\| !w.isToplevel() \|\| !w.mapped {
224	224		l.closed(id)
225	225		}
226	226		}

@@ -231,7 +231,7 @@ func (s *Server) refreshToplevels() {
231	231		for _, m := range s.toplevelManagers {
232	232		for id, h := range m.handles {
233	233		w := s.windows[id]
234		-	if h.req.closed \|\| w == nil \|\| w.toplevel == nil \|\| !w.mapped {
	234	+	if h.req.closed \|\| w == nil \|\| !w.isToplevel() \|\| !w.mapped {
235	235		m.closed(id)
236	236		}
237	237		}

@@ -253,7 +253,7 @@ func (t toplevelRequests) window() window {
253	253		if t.s.protected() \|\| t.closed {
254	254		return nil
255	255		}
256		-	if w := t.s.windows[t.id]; w != nil && w.toplevel != nil && w.mapped && w.toplevel.Resource.Alive() {
	256	+	if w := t.s.windows[t.id]; w != nil && w.toplevelAlive() && w.mapped {
257	257		return w
258	258		}
259	259		return nil

@@ -274,7 +274,7 @@ func (t toplevelRequests) Activate(wlr.ZwlrForeignToplevelHandleV1, *wayland.S
274	274		}
275	275		func (t toplevelRequests) Close(wlr.ZwlrForeignToplevelHandleV1) {
276	276		if w := t.window(); w != nil {
277		-	w.toplevel.SendClose()
	277	+	w.sendClose()
278	278		}
279	279		}
280	280		func (t toplevelRequests) SetRectangle(r wlr.ZwlrForeignToplevelHandleV1, _ *wayland.Surface, _, _, w, h int32) {

M internal/adapters/wayland/frames.go +10 -6


@@ -183,7 +183,7 @@ func (s *Server) pacePass(flipped map[string]bool, reports []ports.OutputPresent
183	183		func toplevelRoot(surf surface) surface {
184	184		surf = surf.root()
185	185		for surf.xdg != nil && surf.xdg.window != nil && surf.xdg.window.popup != nil && surf.xdg.window.popup.parent != nil {
186		-	surf = surf.xdg.window.popup.parent.xdg.surface.root()
	186	+	surf = surf.xdg.window.popup.parent.surf().root()
187	187		}
188	188		return surf
189	189		}

@@ -193,7 +193,8 @@ func toplevelRoot(surf surface) surface {
193	193		// for a capture session is invisible.
194	194		func (s Server) invisible(surf surface) bool {
195	195		root := toplevelRoot(surf)
196		-	return root.xdg != nil && root.xdg.window != nil && root.xdg.window.hasLast && !root.xdg.window.last.Visible
	196	+	w := root.toplevelWindow()
	197	+	return w != nil && w.hasLast && !w.last.Visible
197	198		}
198	199
199	200		// suspended reports that nothing draws the toplevel tree, not even a capture

@@ -201,10 +202,11 @@ func (s Server) invisible(surf surface) bool {
201	202		// frame callbacks of its output so the capture keeps moving.
202	203		func (s Server) suspended(surf surface) bool {
203	204		root := toplevelRoot(surf)
204		-	if root.xdg == nil \|\| root.xdg.window == nil \|\| !root.xdg.window.hasLast {
	205	+	w := root.toplevelWindow()
	206	+	if w == nil \|\| !w.hasLast {
205	207		return false
206	208		}
207		-	return !root.xdg.window.last.Visible && !root.xdg.window.last.Captured
	209	+	return !w.last.Visible && !w.last.Captured
208	210		}
209	211
210	212		// frameOutput is the pacing class for a surface; "" is the 60 Hz

@@ -212,11 +214,13 @@ func (s Server) suspended(surf surface) bool {
212	214		func (s Server) frameOutput(surf surface) string {
213	215		surf = toplevelRoot(surf)
214	216		switch {
215		-	case surf.xdg != nil && surf.xdg.window != nil:
	217	+	case surf.x11win != nil && surf.x11win.isOverride():
	218	+	return s.overrideOutput(surf.x11win)
	219	+	case surf.toplevelWindow() != nil:
216	220		if s.suspended(surf) {
217	221		return suspendedFrameQueue
218	222		}
219		-	return surf.xdg.window.last.Output
	223	+	return surf.toplevelWindow().last.Output
220	224		case surf.layer != nil && surf.layer.output != nil:
221	225		return surf.layer.output.name()
222	226		case surf.lock != nil && surf.lock.output != nil && !surf.lock.closed:

M internal/adapters/wayland/globals.go +10 -1


@@ -13,6 +13,7 @@ import (
13	13		func registerGlobals(d server.Display, o Options, s Server) error {
14	14		for _, register := range []func() error{
15	15		func() error { return registerXDG(d, s) },
	16	+	func() error { return registerXwaylandShell(d, s) },
16	17		func() error { return registerLayer(d, s) },
17	18		func() error {
18	19		// Advertise only with the production owner gate and authoritative

@@ -131,8 +132,16 @@ func (c compositor) CreateSurface(r *wayland.Compositor, id uint32) {
131	132		state.identity = c.server.nextSurface
132	133		state.wl = w
133	134		c.server.surfaces[w.Resource] = state
	135	+	c.server.surfaceByIdentity[state.identity] = state
134	136		state.sendScale()
135		-	w.OnDestroy = func() { delete(c.server.surfaces, w.Resource); state.Destroy(w) }
	137	+	w.OnDestroy = func() {
	138	+	delete(c.server.surfaces, w.Resource)
	139	+	delete(c.server.surfaceByIdentity, state.identity)
	140	+	state.Destroy(w)
	141	+	if state.kind == roleX11 && c.server.xwm != nil {
	142	+	c.server.xwm.SurfaceGone(state.identity)
	143	+	}
	144	+	}
136	145		}
137	146		}
138	147		func (c compositor) CreateRegion(r *wayland.Compositor, id uint32) {

M internal/adapters/wayland/imagecopy.go +1 -1


@@ -351,7 +351,7 @@ func (c captureTarget) geometry() (o output, rect image.Rectangle, hidden, ok
351	351		case srcWindow:
352	352		// Core's state gives the size; before it, the last configure.
353	353		w := c.s.windows[src.window]
354		-	if w == nil \|\| !w.mapped \|\| w.toplevel == nil \|\| w.gen != src.gen {
	354	+	if w == nil \|\| !w.mapped \|\| !w.isToplevel() \|\| w.gen != src.gen {
355	355		return nil, image.Rectangle{}, false, false
356	356		}
357	357		name, size := w.last.Output, ports.Rect{W: w.last.Width, H: w.last.Height}

M internal/adapters/wayland/outputs.go +72 -1


@@ -42,6 +42,8 @@ type output struct {
42	42		global *server.Global
43	43		resources []*wayland.Output
44	44		xdgOutputs []*xdgoutput.ZxdgOutputV1
	45	+	// xdgOutputsX are the private xdg-outputs of the Xwayland client (X space).
	46	+	xdgOutputsX []*xdgoutput.ZxdgOutputV1
45	47		}
46	48
47	49		func (o *output) name() string { return o.place.Info.Name }

@@ -89,6 +91,36 @@ func (o output) sendXDG(x xdgoutput.ZxdgOutputV1, withName bool) {
89	91		}
90	92		}
91	93
	94	+	// sendXDGX sends the private xdg-output state: the layout position moved to
	95	+	// X space and the logical size.
	96	+	func (o output) sendXDGX(s Server, x *xdgoutput.ZxdgOutputV1, withName bool) {
	97	+	ox, oy := s.xspace.Origin()
	98	+	x.SendLogicalPosition(int32(o.place.X-ox), int32(o.place.Y-oy))
	99	+	x.SendLogicalSize(int32(o.place.Width), int32(o.place.Height))
	100	+	if withName && x.Version() >= 2 {
	101	+	x.SendName(o.name())
	102	+	x.SendDescription(o.description())
	103	+	}
	104	+	}
	105	+
	106	+	// republishXDGX resends every private xdg-output after a layout change, so
	107	+	// Xwayland resizes the root and its RandR outputs.
	108	+	func (s *Server) republishXDGX() {
	109	+	for _, o := range s.outputs {
	110	+	for _, x := range o.xdgOutputsX {
	111	+	o.sendXDGX(s, x, false)
	112	+	if x.Version() < 3 {
	113	+	x.SendDone()
	114	+	}
	115	+	}
	116	+	for _, r := range o.resources {
	117	+	if r.Client() == s.xwayland.client && r.Version() >= 2 {
	118	+	r.SendDone()
	119	+	}
	120	+	}
	121	+	}
	122	+	}
	123	+
92	124		// outputOf returns the output a wl_output resource belongs to, or nil for a
93	125		// removed one.
94	126		func (s Server) outputOf(r wayland.Output) *output {

@@ -162,6 +194,10 @@ func (s *Server) setOutputs(c ports.SetOutputs) {
162	194		changed := !slices.Equal(s.outputPlaces, c.Outputs)
163	195		focusChanged := s.focusedOutput != c.Focused
164	196		s.outputPlaces = append(ports.Layout(nil), c.Outputs...)
	197	+	xChanged := s.xspace.Set(s.outputPlaces)
	198	+	if s.xwm != nil {
	199	+	s.xwm.LayoutChanged(xChanged)
	200	+	}
165	201		defer func() {
166	202		if changed {
167	203		s.refreshOutputManagers()

@@ -244,6 +280,9 @@ func (s *Server) setOutputs(c ports.SetOutputs) {
244	280		for _, surf := range s.surfaces {
245	281		surf.sendScale()
246	282		}
	283	+	if changed {
	284	+	s.republishXDGX()
	285	+	}
247	286		s.notifyColorFeedback()
248	287		// Layer surfaces sized from the output follow its new logical size.
249	288		adopted := false

@@ -279,10 +318,42 @@ type outputHandler struct{}
279	318
280	319		func (outputHandler) Release(*wayland.Output) {}
281	320
	321	+	// registerXDGOutput registers the public zxdg_output_manager_v1 and a second,
	322	+	// private one for Xwayland whose outputs are in X space (see globalVisible).
282	323		func registerXDGOutput(d server.Display, s Server) error {
283		-	return xdgoutput.NewZxdgOutputManagerV1Global(d, 3, func(c server.Client, v, id uint32) {
	324	+	var err error
	325	+	s.xdgPublic, err = d.AddGlobal(xdgoutput.ZxdgOutputManagerV1Interface, 3, func(c server.Client, v, id uint32) {
284	326		_, _ = xdgoutput.NewZxdgOutputManagerV1(c, int32(v), id, xdgOutputManager{s})
285	327		})
	328	+	if err != nil {
	329	+	return err
	330	+	}
	331	+	s.xdgPrivate, err = d.AddGlobal(xdgoutput.ZxdgOutputManagerV1Interface, 3, func(c server.Client, v, id uint32) {
	332	+	_, _ = xdgoutput.NewZxdgOutputManagerV1(c, int32(v), id, xdgOutputManagerX{s})
	333	+	})
	334	+	return err
	335	+	}
	336	+
	337	+	type xdgOutputManagerX struct{ server *Server }
	338	+
	339	+	func (xdgOutputManagerX) Destroy(*xdgoutput.ZxdgOutputManagerV1) {}
	340	+	func (m xdgOutputManagerX) GetXdgOutput(r xdgoutput.ZxdgOutputManagerV1, id uint32, wl wayland.Output) {
	341	+	x, err := xdgoutput.NewZxdgOutputV1(r.Client(), r.Version(), id, xdgOutput{})
	342	+	if err != nil {
	343	+	return
	344	+	}
	345	+	o := m.server.outputOf(wl)
	346	+	if o == nil {
	347	+	return
	348	+	}
	349	+	o.xdgOutputsX = append(o.xdgOutputsX, x)
	350	+	x.OnDestroy = func() { o.xdgOutputsX = removeItem(o.xdgOutputsX, x) }
	351	+	o.sendXDGX(m.server, x, true)
	352	+	if r.Version() < 3 \|\| wl.Version() < 2 {
	353	+	x.SendDone()
	354	+	} else {
	355	+	wl.SendDone()
	356	+	}
286	357		}
287	358
288	359		type xdgOutputManager struct{ server *Server }

M internal/adapters/wayland/popup.go +2 -2


@@ -31,7 +31,7 @@ func (s Server) newPopup(x xdgSurface, r *xdgshell.Surface, id uint32, parentX
31	31		var parent *window
32	32		if parentXDG != nil {
33	33		for _, w := range s.windows {
34		-	if w.xdg.resource != nil && w.xdg.resource.Resource == parentXDG.Resource {
	34	+	if w.xdg != nil && w.xdg.resource != nil && w.xdg.resource.Resource == parentXDG.Resource {
35	35		parent = w
36	36		}
37	37		}

@@ -166,7 +166,7 @@ func (p *popup) configure(c ports.ConfigurePopup) {
166	166		func (s Server) topGrab(client server.Client, parent window) bool {
167	167		var top *window
168	168		for _, w := range s.windows {
169		-	if w.popup != nil && w.popup.grab && !w.popup.done && w.xdg.resource.Client() == client && (top == nil \|\| w.id > top.id) {
	169	+	if w.popup != nil && w.popup.grab && !w.popup.done && w.client() == client && (top == nil \|\| w.id > top.id) {
170	170		top = w
171	171		}
172	172		}

M internal/adapters/wayland/scale.go +5 -3


@@ -21,12 +21,14 @@ func (s Server) outputOfSurface(surf surface) *output {
21	21		surf = surf.root()
22	22		// Popups are on their parent's output.
23	23		for surf.xdg != nil && surf.xdg.window != nil && surf.xdg.window.popup != nil && surf.xdg.window.popup.parent != nil {
24		-	surf = surf.xdg.window.popup.parent.xdg.surface.root()
	24	+	surf = surf.xdg.window.popup.parent.surf().root()
25	25		}
26	26		name := ""
27	27		switch {
28		-	case surf.xdg != nil && surf.xdg.window != nil:
29		-	name = surf.xdg.window.last.Output
	28	+	case surf.x11win != nil && surf.x11win.isOverride():
	29	+	name = s.overrideOutput(surf.x11win)
	30	+	case surf.toplevelWindow() != nil:
	31	+	name = surf.toplevelWindow().last.Output
30	32		case surf.layer != nil && surf.layer.output != nil:
31	33		return surf.layer.output
32	34		case surf.lock != nil:

M internal/adapters/wayland/screencast.go +1 -1


@@ -146,7 +146,7 @@ func (s *Server) openCast(cmd ports.CastCommand) {
146	146		gone := ports.CaptureReasonOutputGone
147	147		if cmd.Window != 0 {
148	148		gone = ports.CaptureReasonWindowGone
149		-	if w := s.windows[cmd.Window]; w != nil && w.mapped && w.toplevel != nil {
	149	+	if w := s.windows[cmd.Window]; w != nil && w.mapped && w.isToplevel() {
150	150		src = &captureSource{kind: srcWindow, window: cmd.Window, gen: w.gen}
151	151		open.Window = cmd.Window
152	152		}

M internal/adapters/wayland/seat.go +10 -9


@@ -276,10 +276,10 @@ func (s *Server) setModifiers(c ports.SetModifiers) {
276	276		}
277	277
278	278		func (s Server) windowKeyboards(w window) []*wayland.Keyboard {
279		-	if w == nil \|\| !w.mapped \|\| !w.xdg.resource.Resource.Alive() {
	279	+	if w == nil \|\| !w.mapped \|\| !w.alive() {
280	280		return nil
281	281		}
282		-	return s.clientKeyboards(w.xdg.resource.Client())
	282	+	return s.clientKeyboards(w.client())
283	283		}
284	284
285	285		// clientKeyboards returns c's wl_keyboards without allocating. The list holds

@@ -300,8 +300,8 @@ func (s Server) focusTarget(id ports.WindowID) (wayland.Surface, []*wayland.Ke
300	300		// already dead. Admission is enforced before entering or delivering.
301	301		return l.surface.wl, s.clientKeyboards(l.surface.wl.Client())
302	302		}
303		-	if w := s.windows[id]; w != nil && w.mapped {
304		-	if surf := w.xdg.surfaceResource(); surf != nil {
	303	+	if w := s.windows[id]; w != nil && w.mapped && !w.isOverride() {
	304	+	if surf := w.surfaceResource(); surf != nil {
305	305		return surf, s.windowKeyboards(w)
306	306		}
307	307		}

@@ -319,8 +319,8 @@ func (s Server) pointerTarget(id ports.WindowID) (server.Client, []wayland.Poi
319	319		if l := s.lockSurfaces[id]; l != nil && s.lockInputTarget(id) {
320	320		return l.resource.Client(), s.clientPointers(l.resource.Client()), true
321	321		}
322		-	if w := s.windows[id]; w != nil && w.mapped && w.xdg.resource.Resource.Alive() {
323		-	return w.xdg.resource.Client(), s.windowPointers(w), true
	322	+	if w := s.windows[id]; w != nil && w.mapped && w.alive() {
	323	+	return w.client(), s.windowPointers(w), true
324	324		}
325	325		if l := s.layers[id]; l != nil && l.mapped && l.resource.Resource.Alive() {
326	326		return l.resource.Client(), s.layerPointers(l), true

@@ -335,7 +335,7 @@ func (s Server) pointerSurface(id ports.WindowID, x, y float64) (wayland.Surfa
335	335		return l.surface.wl, s.clientPointers(l.surface.wl.Client()), x, y
336	336		}
337	337		if w := s.windows[id]; w != nil {
338		-	if surf := w.xdg.surfaceResource(); surf != nil && surf.Resource.Alive() {
	338	+	if surf := w.surfaceResource(); surf != nil && surf.Resource.Alive() {
339	339		x, y := w.surfacePoint(x, y)
340	340		return surf, s.windowPointers(w), x, y
341	341		}

@@ -455,6 +455,7 @@ func (s *Server) changeFocus(id ports.WindowID) {
455	455		}
456	456		}
457	457		s.textInputFocus()
	458	+	s.x11Focus()
458	459		s.log.Debug().Uint64("id", uint64(s.seat.focused)).Msg("keyboard focus")
459	460		s.updateConstraint()
460	461		}

@@ -543,10 +544,10 @@ func pointerFrame(p *wayland.Pointer) {
543	544		}
544	545		}
545	546		func (s Server) windowPointers(w window) []*wayland.Pointer {
546		-	if w == nil \|\| !w.mapped \|\| !w.xdg.resource.Resource.Alive() {
	547	+	if w == nil \|\| !w.mapped \|\| !w.alive() {
547	548		return nil
548	549		}
549		-	return s.clientPointers(w.xdg.resource.Client())
	550	+	return s.clientPointers(w.client())
550	551		}
551	552
552	553		func (s Server) layerPointers(l layerSurface) []*wayland.Pointer {

M internal/adapters/wayland/server.go +40 -16


@@ -16,6 +16,7 @@ import (
16	16		"github.com/bnema/neferwl/internal/adapters/captureallow"
17	17		"github.com/bnema/neferwl/internal/adapters/clock"
18	18		"github.com/bnema/neferwl/internal/adapters/wayland/sessionlock"
	19	+	"github.com/bnema/neferwl/internal/adapters/wayland/xwm"
19	20		"github.com/bnema/neferwl/internal/adapters/workspaceid"
20	21		"github.com/bnema/neferwl/internal/ports"
21	22		"github.com/bnema/purego-libwayland/server"

@@ -160,13 +161,21 @@ type Server struct {
160	161		securityStop int
161	162		securityWG sync.WaitGroup
162	163		securityLive atomic.Int32
163		-	display *server.Display
164		-	env procEnv
165		-	name string
166		-	cleanup func()
167		-	log zerowrap.Logger
168		-	logDamage bool
169		-	channels Channels
	164	+	xwayland xwaylandClient // display owner
	165	+	// xdgPublic and xdgPrivate are the two zxdg_output_manager_v1 globals:
	166	+	// layout space for clients, X space for Xwayland.
	167	+	xdgPublic, xdgPrivate *server.Global
	168	+	// xwm manages the X11 windows of the Xwayland client; x11Slots maps its
	169	+	// slots to their windows. Display goroutine only.
	170	+	xwm *xwm.XWM
	171	+	x11Slots map[xwm.Slot]*window
	172	+	display *server.Display
	173	+	env procEnv
	174	+	name string
	175	+	cleanup func()
	176	+	log zerowrap.Logger
	177	+	logDamage bool
	178	+	channels Channels
170	179		// awaiting holds frame callbacks by output name, due at its next
171	180		// frame (frameDue, or its page flip).
172	181		awaiting map[string][]*wayland.Callback

@@ -214,8 +223,11 @@ type Server struct {
214	223		// foreignExports are the live xdg-foreign handles (foreign.go).
215	224		foreignExports map[string]*foreignExport
216	225		surfaces map[server.Resource]surface
217		-	buffers map[*server.Resource]clientBuffer
218		-	dmabuf *dmabufGlobal
	226	+	// surfaceByIdentity finds a surface by its identity (xwayland_shell_v1
	227	+	// pairing); kept with surfaces.
	228	+	surfaceByIdentity map[uint64]*surface
	229	+	buffers map[*server.Resource]clientBuffer
	230	+	dmabuf *dmabufGlobal
219	231		// hdrOutputs records confirmed DRM modesets; absent outputs are SDR.
220	232		hdrOutputs map[string]ports.OutputHDR
221	233		colorID uint64

@@ -281,6 +293,7 @@ type Server struct {
281	293		workspaceIDs *workspaceid.IDs
282	294		outputHeads ports.OutputHeads
283	295		outputPlaces ports.Layout
	296	+	xspace xwm.Space // the one layout <-> X mapping, shared with the XWM
284	297		managementSerial uint32
285	298		nextOutputApply uint64
286	299		outputReplies map[uint64]*outputConfiguration

@@ -366,8 +379,10 @@ func New(opts Options, ch Channels, log zerowrap.Logger) (*Server, error) {
366	379		logDamage: opts.LogDamage,
367	380		channels: ch,
368	381		surfaces: make(map[server.Resource]surface),
	382	+	surfaceByIdentity: make(map[uint64]*surface),
369	383		buffers: make(map[*server.Resource]clientBuffer),
370	384		windows: make(map[ports.WindowID]*window),
	385	+	x11Slots: make(map[xwm.Slot]*window),
371	386		layers: make(map[ports.WindowID]*layerSurface),
372	387		nextWindow: 1,
373	388		eventReady: make(chan struct{}, 1),

@@ -498,6 +513,7 @@ func New(opts Options, ch Channels, log zerowrap.Logger) (*Server, error) {
498	513		if err = s.openPaceTimer(); err != nil {
499	514		return abort(err)
500	515		}
	516	+	d.SetGlobalFilter(s.globalVisible)
501	517		if err = registerGlobals(d, opts, s); err != nil {
502	518		return abort(err)
503	519		}

@@ -585,6 +601,12 @@ func (s *Server) Run(ctx context.Context) error {
585	601		}
586	602		s.castInventoryChanged()
587	603		err := s.display.Run(ctx)
	604	+	// The display is gone: only the X connection is left to close.
	605	+	if s.xwm != nil {
	606	+	s.xwm.CloseConn()
	607	+	s.xwm = nil
	608	+	}
	609	+	s.forgetXwayland()
588	610		s.stopSecurityContexts()
589	611		wg.Wait()
590	612		return err

@@ -774,9 +796,11 @@ func (s *Server) apply(cmd ports.ClientCommand) {
774	796		if w := s.windows[c.ID]; w != nil && w.popup != nil {
775	797		w.popup.dismiss()
776	798		}
	799	+	case ports.PlaceWindow:
	800	+	s.x11Place(c)
777	801		case ports.ConfigureWindow:
778	802		w := s.windows[c.ID]
779		-	if w == nil \|\| w.toplevel == nil \|\| !w.toplevel.Resource.Alive() \|\| !w.xdg.resource.Resource.Alive() {
	803	+	if w == nil \|\| !w.toplevelAlive() \|\| !w.alive() {
780	804		s.log.Debug().Uint64("id", uint64(c.ID)).Msg("configure missing window")
781	805		return
782	806		}

@@ -787,16 +811,16 @@ func (s *Server) apply(cmd ports.ClientCommand) {
787	811		scanoutChanged := !w.hasLast \|\| w.last.Fullscreen != c.Fullscreen \|\| w.last.Output != c.Output \|\| w.last.Visible != c.Visible
788	812		w.last, w.hasLast = c, true
789	813		if visibilityChanged {
790		-	s.relocateCallbacks(w.xdg.surface)
	814	+	s.relocateCallbacks(w.surf())
791	815		s.dropFeedbacks(time.Now())
792	816		s.wakePacer() // reconsider FIFO barriers at the new period
793	817		}
794	818		w.sendConfigure()
795	819		s.toplevelChanged(w)
796		-	if scanoutChanged && w.xdg.surface != nil {
797		-	s.dmabuf.resendSurface(w.xdg.surface)
	820	+	if scanoutChanged && w.surf() != nil {
	821	+	s.dmabuf.resendSurface(w.surf())
798	822		}
799		-	if surf := w.xdg.surface; surf != nil && c.Output != "" {
	823	+	if surf := w.surf(); surf != nil && c.Output != "" {
800	824		surf.sendTreeScale()
801	825		}
802	826		if scanoutChanged {

@@ -817,10 +841,10 @@ func (s *Server) apply(cmd ports.ClientCommand) {
817	841		s.setShortcutsInhibit(c)
818	842		case ports.CloseWindow:
819	843		w := s.windows[c.ID]
820		-	if w == nil \|\| w.toplevel == nil \|\| !w.toplevel.Resource.Alive() {
	844	+	if w == nil \|\| !w.toplevelAlive() {
821	845		s.log.Debug().Uint64("id", uint64(c.ID)).Msg("close missing window")
822	846		return
823	847		}
824		-	w.toplevel.SendClose()
	848	+	w.sendClose()
825	849		}
826	850		}

M internal/adapters/wayland/surface.go +15 -2


@@ -28,6 +28,9 @@ const (
28	28		roleSessionLock
29	29		// roleDragIcon is the icon of a data drag (dnd.go).
30	30		roleDragIcon
	31	+	// roleX11 is the surface of an X11 window paired through
	32	+	// xwayland_shell_v1.
	33	+	roleX11
31	34		)
32	35
33	36		type surface struct {

@@ -47,8 +50,12 @@ type surface struct {
47	50		formatOpaque bool
48	51		kind roleKind
49	52		xdg *xdgSurface
50		-	layer *layerSurface
51		-	lock *lockSurface
	53	+	// x11win is the X11 window the surface is associated with; x11Serial is
	54	+	// the serial of xwayland_surface_v1.set_serial, 0 until set.
	55	+	x11win *window
	56	+	x11Serial uint64
	57	+	layer *layerSurface
	58	+	lock *lockSurface
52	59		// bufferCommitted is permanent, including commits later discarded by FIFO.
53	60		bufferCommitted bool
54	61		server *Server

@@ -192,6 +199,9 @@ func (s *surface) windowID() ports.WindowID {
192	199		if s.xdg != nil && s.xdg.window != nil && s.xdg.window.mapped {
193	200		return s.xdg.window.id
194	201		}
	202	+	if s.x11win != nil && s.x11win.mapped {
	203	+	return s.x11win.id
	204	+	}
195	205		if s.layer != nil && s.layer.mapped {
196	206		return s.layer.id
197	207		}

@@ -566,6 +576,9 @@ func (s surface) applyCommit(u update) {
566	576		if s.xdg != nil && s.xdg.window != nil {
567	577		s.xdg.window.afterCommit()
568	578		}
	579	+	if s.x11win != nil {
	580	+	s.x11win.afterCommit()
	581	+	}
569	582		if s.lock != nil {
570	583		// Role callbacks precede content construction; publish lock placement
571	584		// only once validated current dimensions are available.

A internal/adapters/wayland/window.go +112 -0

@@ -0,0 +1,112 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"github.com/bnema/go-wayland-bindings/server/wayland"
	5	+	"github.com/bnema/neferwl/internal/ports"
	6	+	"github.com/bnema/purego-libwayland/server"
	7	+	)
	8	+
	9	+	// Role-independent accessors of a window. Code outside xdg.go goes through
	10	+	// them instead of dereferencing w.xdg, which is nil for windows of another
	11	+	// role.
	12	+
	13	+	// isToplevel reports whether w is a toplevel (xdg or X11), not a popup.
	14	+	func (w *window) isToplevel() bool { return w.toplevel != nil \|\| (w.x11 != nil && !w.x11.override) }
	15	+
	16	+	// srv is the server the window belongs to.
	17	+	func (w window) srv() Server {
	18	+	if w.xdg != nil {
	19	+	return w.xdg.server
	20	+	}
	21	+	return w.x11.server
	22	+	}
	23	+
	24	+	// surf is the window's surface, nil when it has none.
	25	+	func (w window) surf() surface {
	26	+	switch {
	27	+	case w.xdg != nil:
	28	+	return w.xdg.surface
	29	+	case w.x11 != nil:
	30	+	return w.x11.surface
	31	+	}
	32	+	return nil
	33	+	}
	34	+
	35	+	// alive reports whether the window's role object is alive.
	36	+	func (w *window) alive() bool {
	37	+	switch {
	38	+	case w.xdg != nil:
	39	+	return w.xdg.resource.Resource.Alive()
	40	+	case w.x11 != nil:
	41	+	return w.x11.surface != nil && w.x11.surface.wl.Resource.Alive()
	42	+	}
	43	+	return false
	44	+	}
	45	+
	46	+	// client is the window's client; the zero Client when it has no role object.
	47	+	func (w *window) client() server.Client {
	48	+	switch {
	49	+	case w.xdg != nil:
	50	+	return w.xdg.resource.Client()
	51	+	case w.x11 != nil && w.x11.surface != nil:
	52	+	return w.x11.surface.wl.Client()
	53	+	}
	54	+	return server.Client{}
	55	+	}
	56	+
	57	+	// geometry is the committed window geometry; empty means the whole surface.
	58	+	func (w *window) geometry() ports.Rect {
	59	+	if w.xdg != nil {
	60	+	return w.xdg.geometry
	61	+	}
	62	+	return ports.Rect{}
	63	+	}
	64	+
	65	+	// sendConfigure sends w.last to the client.
	66	+	func (w *window) sendConfigure() {
	67	+	switch {
	68	+	case w.xdg != nil:
	69	+	w.sendXDGConfigure()
	70	+	case w.x11 != nil:
	71	+	w.x11.server.x11Configure(w)
	72	+	}
	73	+	}
	74	+
	75	+	// sendClose asks the client to close the window.
	76	+	func (w *window) sendClose() {
	77	+	switch {
	78	+	case w.toplevel != nil:
	79	+	w.toplevel.SendClose()
	80	+	case w.x11 != nil:
	81	+	w.x11.server.x11Close(w)
	82	+	}
	83	+	}
	84	+
	85	+	// toplevelAlive reports whether the window is a toplevel whose protocol
	86	+	// object is alive.
	87	+	func (w *window) toplevelAlive() bool {
	88	+	if w.x11 != nil {
	89	+	return w.alive()
	90	+	}
	91	+	return w.toplevel != nil && w.toplevel.Resource.Alive()
	92	+	}
	93	+
	94	+	// surfaceResource is the window's wl_surface, nil when it has none or it died.
	95	+	func (w window) surfaceResource() wayland.Surface {
	96	+	switch {
	97	+	case w.xdg != nil:
	98	+	return w.xdg.surfaceResource()
	99	+	case w.x11 != nil && w.alive():
	100	+	return w.x11.surface.wl
	101	+	}
	102	+	return nil
	103	+	}
	104	+
	105	+	// toplevelWindow is the toplevel window (xdg or X11) the surface is the role
	106	+	// surface of, nil for other roles and popups' parents are not followed.
	107	+	func (s surface) toplevelWindow() window {
	108	+	if s.xdg != nil && s.xdg.window != nil {
	109	+	return s.xdg.window
	110	+	}
	111	+	return s.x11win
	112	+	}

M internal/adapters/wayland/wire_client_test.go +3 -0


@@ -55,6 +55,7 @@ import (
55	55		wire_xdgforeign "github.com/bnema/go-wayland-bindings/server/xdgforeign"
56	56		wire_xdgoutput "github.com/bnema/go-wayland-bindings/server/xdgoutput"
57	57		wire_xdgshell "github.com/bnema/go-wayland-bindings/server/xdgshell"
	58	+	wire_xwaylandshell "github.com/bnema/go-wayland-bindings/server/xwaylandshell"
58	59		wire_imagecapture "github.com/bnema/neferwl/internal/adapters/wayland/imagecapture"
59	60		"github.com/bnema/purego-libwayland/server"
60	61		"github.com/bnema/wlturbo"

@@ -253,6 +254,8 @@ var wireSchemas = map[string]wireSchema{
253	254		"zwp_text_input_v3": {wire_textinput.ZwpTextInputV3Interface, &client_textinput.TextInputV3{}, map[uint16]bool{0: true}, nil},
254	255		"zwp_virtual_keyboard_manager_v1": {wire_virtualkeyboard.ZwpVirtualKeyboardManagerV1Interface, &client_virtualkeyboard.VirtualKeyboardManager{}, nil, nil},
255	256		"zwp_virtual_keyboard_v1": {wire_virtualkeyboard.ZwpVirtualKeyboardV1Interface, &client_virtualkeyboard.VirtualKeyboard{}, map[uint16]bool{3: true}, nil},
	257	+	"xwayland_shell_v1": {wire_xwaylandshell.XwaylandShellV1Interface, nil, map[uint16]bool{0: true}, nil},
	258	+	"xwayland_surface_v1": {wire_xwaylandshell.XwaylandSurfaceV1Interface, nil, map[uint16]bool{1: true}, nil},
256	259		"zxdg_output_manager_v1": {wire_xdgoutput.ZxdgOutputManagerV1Interface, &client_xdgoutput.ZxdgOutputManager{}, map[uint16]bool{0: true}, nil},
257	260		"zxdg_output_v1": {wire_xdgoutput.ZxdgOutputV1Interface, &client_xdgoutput.ZxdgOutput{}, map[uint16]bool{0: true}, nil},
258	261		}

A internal/adapters/wayland/x11override_test.go +107 -0

@@ -0,0 +1,107 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"testing"
	5	+
	6	+	"github.com/bnema/go-wayland-bindings/server/wayland"
	7	+	"github.com/bnema/neferwl/internal/adapters/wayland/xwm"
	8	+	"github.com/bnema/neferwl/internal/ports"
	9	+	)
	10	+
	11	+	const ovWin = 0x500002
	12	+
	13	+	// overrideWindow maps an override-redirect X window and pairs its surface.
	14	+	func (r *x11Rig) overrideWindow(win uint32, x, y int16, serial uint64) uint32 {
	15	+	r.t.Helper()
	16	+	r.peer.createOverride(win, x, y)
	17	+	r.peer.mapNotify(win)
	18	+	return r.pair(win, serial)
	19	+	}
	20	+
	21	+	func (r *x11Rig) state(f func()) {
	22	+	r.t.Helper()
	23	+	r.s.display.Do(f)
	24	+	}
	25	+
	26	+	func TestOverrideMapsOnFirstCommitAndMoves(t *testing.T) {
	27	+	r := newX11Rig(t)
	28	+	r.overrideWindow(ovWin, 30, 40, x11Serial)
	29	+
	30	+	m := awaitEvent[ports.UnmanagedMapped](t, r.events)
	31	+	if m.X != 30 \|\| m.Y != 40 \|\| m.Width != 100 \|\| m.Height != 50 \|\| m.NoInput {
	32	+	t.Fatalf("mapped %+v", m)
	33	+	}
	34	+	r.state(func() {
	35	+	w := r.s.windows[m.ID]
	36	+	if w == nil \|\| !w.isOverride() \|\| w.isToplevel() \|\| !w.mapped {
	37	+	t.Errorf("override window %+v", w)
	38	+	}
	39	+	if surf, _ := r.s.focusTarget(m.ID); surf != nil {
	40	+	t.Error("override window is a keyboard focus target")
	41	+	}
	42	+	})
	43	+
	44	+	r.peer.configureNotify(ovWin, 60, 70, 100, 50)
	45	+	if mv := awaitEvent[ports.UnmanagedMoved](t, r.events); mv.ID != m.ID \|\| mv.X != 60 \|\| mv.Y != 70 {
	46	+	t.Fatalf("moved %+v", mv)
	47	+	}
	48	+
	49	+	r.peer.unmapNotify(ovWin)
	50	+	if u := awaitEvent[ports.UnmanagedUnmapped](t, r.events); u.ID != m.ID {
	51	+	t.Fatalf("unmapped %+v", u)
	52	+	}
	53	+	r.state(func() {
	54	+	if r.s.windows[m.ID] != nil {
	55	+	t.Error("override window kept after unmap")
	56	+	}
	57	+	})
	58	+	}
	59	+
	60	+	func TestOverrideSurfaceDestroyUnmaps(t *testing.T) {
	61	+	r := newX11Rig(t)
	62	+	surf := r.overrideWindow(ovWin, 0, 0, x11Serial)
	63	+	m := awaitEvent[ports.UnmanagedMapped](t, r.events)
	64	+	requestProtocol(t, r.xc, surf, wayland.SurfaceRequestDestroy)
	65	+	if err := r.xc.Roundtrip(); err != nil {
	66	+	t.Fatal(err)
	67	+	}
	68	+	if u := awaitEvent[ports.UnmanagedUnmapped](t, r.events); u.ID != m.ID {
	69	+	t.Fatalf("unmapped %+v", u)
	70	+	}
	71	+	}
	72	+
	73	+	func TestOverrideTakesPointerAndOutput(t *testing.T) {
	74	+	r := newX11Rig(t)
	75	+	r.commands <- ports.SetOutputs{Outputs: ports.Layout{
	76	+	{Info: ports.OutputInfo{Name: "A"}, X: 0, Y: 0, Width: 1920, Height: 1080, Scale: 1},
	77	+	{Info: ports.OutputInfo{Name: "B"}, X: 1920, Y: 0, Width: 1920, Height: 1080, Scale: 1},
	78	+	}, Focused: "A"}
	79	+	r.overrideWindow(ovWin, 100, 10, x11Serial)
	80	+	m := awaitEvent[ports.UnmanagedMapped](t, r.events)
	81	+	r.state(func() {
	82	+	w := r.s.windows[m.ID]
	83	+	if got := r.s.frameOutput(w.x11.surface); got != "A" {
	84	+	t.Errorf("frame output %q, want A", got)
	85	+	}
	86	+	if surf, _, _, _ := r.s.pointerSurface(m.ID, 1, 1); surf == nil {
	87	+	t.Error("pointer cannot enter the override surface")
	88	+	}
	89	+	})
	90	+	r.peer.configureNotify(ovWin, 2000, 10, 100, 50)
	91	+	awaitEvent[ports.UnmanagedMoved](t, r.events)
	92	+	r.state(func() {
	93	+	if got := r.s.frameOutput(r.s.windows[m.ID].x11.surface); got != "B" {
	94	+	t.Errorf("frame output %q after move, want B", got)
	95	+	}
	96	+	})
	97	+	}
	98	+
	99	+	func TestOverrideMovedUnchangedAllocations(t *testing.T) {
	100	+	s := &Server{windows: map[ports.WindowID]window{}, x11Slots: map[xwm.Slot]window{}}
	101	+	w := &window{id: 1, x11: &x11Window{override: true, rect: ports.Rect{X: 1, Y: 2, W: 3, H: 4}}}
	102	+	s.x11Slots[1] = w
	103	+	h := hostImpl{s}
	104	+	if n := testing.AllocsPerRun(1000, func() { h.OverrideMoved(1, 1, 2, 3, 4) }); n != 0 {
	105	+	t.Fatalf("%v allocs", n)
	106	+	}
	107	+	}

A internal/adapters/wayland/x11peer_test.go +332 -0

@@ -0,0 +1,332 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"io"
	6	+	"os"
	7	+	"sync"
	8	+	"testing"
	9	+	"time"
	10	+
	11	+	"golang.org/x/sys/unix"
	12	+	)
	13	+
	14	+	// x11Peer is a scripted X server speaking the real wire protocol over a
	15	+	// socketpair: setup, extensions, atoms, properties, geometry. It records every
	16	+	// request. It is a protocol peer, not a double of a project interface.
	17	+	type x11Peer struct {
	18	+	t *testing.T
	19	+	f *os.File
	20	+	mu sync.Mutex
	21	+
	22	+	seq uint16
	23	+	reqs []x11Req
	24	+	atoms map[string]uint32
	25	+	nextAtom uint32
	26	+	props map[uint32]map[uint32][]byte // window -> atom -> typed data (type, format, data)
	27	+	propMeta map[uint32]map[uint32][2]uint32
	28	+	done chan struct{}
	29	+	}
	30	+
	31	+	type x11Req struct {
	32	+	major, minor uint8
	33	+	raw []byte
	34	+	}
	35	+
	36	+	func (r x11Req) u32(off int) uint32 { return binary.LittleEndian.Uint32(r.raw[off:]) }
	37	+
	38	+	const (
	39	+	x11PeerRoot = 0x100
	40	+	x11Win = 0x500001
	41	+	// Opcodes the tests look for.
	42	+	x11OpConfigureWindow = 12
	43	+	x11OpSetInputFocus = 42
	44	+	x11OpKillClient = 113
	45	+	)
	46	+
	47	+	func startX11Peer(t testing.T) (int, x11Peer) {
	48	+	t.Helper()
	49	+	fds, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM\|unix.SOCK_CLOEXEC, 0)
	50	+	if err != nil {
	51	+	t.Fatal(err)
	52	+	}
	53	+	p := &x11Peer{
	54	+	t: t, f: os.NewFile(uintptr(fds[1]), "x11peer"), atoms: map[string]uint32{}, nextAtom: 1000,
	55	+	props: map[uint32]map[uint32][]byte{}, propMeta: map[uint32]map[uint32][2]uint32{}, done: make(chan struct{}),
	56	+	}
	57	+	t.Cleanup(func() { p.f.Close(); <-p.done })
	58	+	go p.serve()
	59	+	return fds[0], p
	60	+	}
	61	+
	62	+	func (p *x11Peer) setupReply() []byte {
	63	+	vendor := []byte("x11pr\x00\x00\x00")
	64	+	b := make([]byte, 40+len(vendor)+40)
	65	+	b[0], b[2] = 1, 11
	66	+	binary.LittleEndian.PutUint16(b[6:], uint16((len(b)-8)/4))
	67	+	binary.LittleEndian.PutUint32(b[12:], 0x200000)
	68	+	binary.LittleEndian.PutUint32(b[16:], 0x1fffff)
	69	+	binary.LittleEndian.PutUint16(b[24:], 5)
	70	+	b[28] = 1
	71	+	copy(b[40:], vendor)
	72	+	scr := b[40+len(vendor):]
	73	+	binary.LittleEndian.PutUint32(scr, x11PeerRoot)
	74	+	binary.LittleEndian.PutUint32(scr[32:], 0x22)
	75	+	scr[38] = 24
	76	+	return b
	77	+	}
	78	+
	79	+	func (p *x11Peer) serve() {
	80	+	defer close(p.done)
	81	+	var hdr [12]byte
	82	+	if _, err := io.ReadFull(p.f, hdr[:]); err != nil {
	83	+	return
	84	+	}
	85	+	if _, err := p.f.Write(p.setupReply()); err != nil {
	86	+	return
	87	+	}
	88	+	for {
	89	+	var h [4]byte
	90	+	if _, err := io.ReadFull(p.f, h[:]); err != nil {
	91	+	return
	92	+	}
	93	+	raw := h[:]
	94	+	n := int(binary.LittleEndian.Uint16(h[2:])) * 4
	95	+	if n == 0 {
	96	+	var l [4]byte
	97	+	if _, err := io.ReadFull(p.f, l[:]); err != nil {
	98	+	return
	99	+	}
	100	+	raw = append(raw, l[:]...)
	101	+	n = int(binary.LittleEndian.Uint32(l[:])) * 4
	102	+	}
	103	+	rest := make([]byte, n-len(raw))
	104	+	if _, err := io.ReadFull(p.f, rest); err != nil {
	105	+	return
	106	+	}
	107	+	raw = append(append([]byte(nil), raw...), rest...)
	108	+	p.mu.Lock()
	109	+	p.seq++
	110	+	r := x11Req{h[0], h[1], raw}
	111	+	p.reqs = append(p.reqs, r)
	112	+	p.answer(r, raw[len(raw)-len(rest):])
	113	+	p.mu.Unlock()
	114	+	}
	115	+	}
	116	+
	117	+	func (p *x11Peer) reply(data uint8, body []byte) {
	118	+	words := (max(len(body), 24) - 24 + 3) / 4
	119	+	b := make([]byte, 32+4*words)
	120	+	b[0], b[1] = 1, data
	121	+	binary.LittleEndian.PutUint16(b[2:], p.seq)
	122	+	binary.LittleEndian.PutUint32(b[4:], uint32(words))
	123	+	copy(b[8:], body)
	124	+	_, _ = p.f.Write(b)
	125	+	}
	126	+
	127	+	func x11le32(v ...uint32) []byte {
	128	+	b := make([]byte, 0, 4*len(v))
	129	+	for _, x := range v {
	130	+	b = binary.LittleEndian.AppendUint32(b, x)
	131	+	}
	132	+	return b
	133	+	}
	134	+
	135	+	var x11Exts = map[string]uint8{"BIG-REQUESTS": 133, "XC-MISC": 136, "Composite": 142}
	136	+
	137	+	func (p *x11Peer) answer(r x11Req, body []byte) {
	138	+	switch {
	139	+	case r.major == 98: // QueryExtension
	140	+	major, ok := x11Exts[string(body[4:4+binary.LittleEndian.Uint16(body)])]
	141	+	present := uint8(0)
	142	+	if ok {
	143	+	present = 1
	144	+	}
	145	+	p.reply(0, []byte{present, major, 0, 0})
	146	+	case r.major == 16: // InternAtom
	147	+	name := string(body[4 : 4+binary.LittleEndian.Uint16(body)])
	148	+	a, ok := p.atoms[name]
	149	+	if !ok {
	150	+	p.nextAtom++
	151	+	a = p.nextAtom
	152	+	p.atoms[name] = a
	153	+	}
	154	+	p.reply(0, x11le32(a))
	155	+	case r.major == 43: // GetInputFocus (Sync)
	156	+	p.reply(1, x11le32(0))
	157	+	case r.major == 15: // QueryTree
	158	+	b := make([]byte, 24)
	159	+	binary.LittleEndian.PutUint32(b, x11PeerRoot)
	160	+	p.reply(0, b)
	161	+	case r.major == 14: // GetGeometry
	162	+	b := make([]byte, 24)
	163	+	binary.LittleEndian.PutUint32(b, x11PeerRoot)
	164	+	binary.LittleEndian.PutUint16(b[8:], 300)
	165	+	binary.LittleEndian.PutUint16(b[10:], 200)
	166	+	p.reply(24, b)
	167	+	case r.major == 18: // ChangeProperty
	168	+	win, prop := binary.LittleEndian.Uint32(body), binary.LittleEndian.Uint32(body[4:])
	169	+	format, n := body[12], int(binary.LittleEndian.Uint32(body[16:]))
	170	+	p.store(win, prop, binary.LittleEndian.Uint32(body[8:]), uint32(format), body[20:20+n*int(format)/8])
	171	+	case r.major == 20: // GetProperty
	172	+	win, prop := binary.LittleEndian.Uint32(body), binary.LittleEndian.Uint32(body[4:])
	173	+	data, ok := p.props[win][prop]
	174	+	b := make([]byte, 24+(len(data)+3)&^3)
	175	+	var format uint8
	176	+	if ok {
	177	+	meta := p.propMeta[win][prop]
	178	+	format = uint8(meta[1])
	179	+	binary.LittleEndian.PutUint32(b[0:], meta[0])
	180	+	binary.LittleEndian.PutUint32(b[8:], uint32(len(data)/(int(format)/8)))
	181	+	copy(b[24:], data)
	182	+	}
	183	+	p.reply(format, b)
	184	+	case r.major >= 128:
	185	+	switch r.major {
	186	+	case 133:
	187	+	p.reply(0, x11le32(0x100000))
	188	+	case 136:
	189	+	if r.minor == 1 {
	190	+	p.reply(0, x11le32(0, 1))
	191	+	}
	192	+	case 142:
	193	+	if r.minor == 0 {
	194	+	p.reply(0, x11le32(0, 4))
	195	+	}
	196	+	}
	197	+	}
	198	+	}
	199	+
	200	+	func (p *x11Peer) store(win, prop, typ, format uint32, data []byte) {
	201	+	if p.props[win] == nil {
	202	+	p.props[win], p.propMeta[win] = map[uint32][]byte{}, map[uint32][2]uint32{}
	203	+	}
	204	+	p.props[win][prop] = append([]byte(nil), data...)
	205	+	p.propMeta[win][prop] = [2]uint32{typ, format}
	206	+	}
	207	+
	208	+	// atom interns name the way the XWM would have.
	209	+	func (p *x11Peer) atom(name string) uint32 {
	210	+	p.mu.Lock()
	211	+	defer p.mu.Unlock()
	212	+	a, ok := p.atoms[name]
	213	+	if !ok {
	214	+	p.nextAtom++
	215	+	a = p.nextAtom
	216	+	p.atoms[name] = a
	217	+	}
	218	+	return a
	219	+	}
	220	+
	221	+	// setProp scripts a window property (typ is an atom number, format 8 or 32).
	222	+	func (p *x11Peer) setProp(win, prop, typ, format uint32, data []byte) {
	223	+	p.mu.Lock()
	224	+	defer p.mu.Unlock()
	225	+	p.store(win, prop, typ, format, data)
	226	+	}
	227	+
	228	+	func (p x11Peer) event(code uint8, fill func(b [32]byte)) {
	229	+	p.mu.Lock()
	230	+	defer p.mu.Unlock()
	231	+	var b [32]byte
	232	+	b[0] = code
	233	+	binary.LittleEndian.PutUint16(b[2:], p.seq)
	234	+	fill(&b)
	235	+	_, _ = p.f.Write(b[:])
	236	+	}
	237	+
	238	+	func (p *x11Peer) createNotify(win uint32) {
	239	+	p.event(16, func(b *[32]byte) {
	240	+	binary.LittleEndian.PutUint32(b[4:], x11PeerRoot)
	241	+	binary.LittleEndian.PutUint32(b[8:], win)
	242	+	binary.LittleEndian.PutUint16(b[16:], 100)
	243	+	binary.LittleEndian.PutUint16(b[18:], 50)
	244	+	})
	245	+	}
	246	+
	247	+	// createOverride announces an override-redirect window of 100x50 at x,y.
	248	+	func (p *x11Peer) createOverride(win uint32, x, y int16) {
	249	+	p.event(16, func(b *[32]byte) {
	250	+	binary.LittleEndian.PutUint32(b[4:], x11PeerRoot)
	251	+	binary.LittleEndian.PutUint32(b[8:], win)
	252	+	binary.LittleEndian.PutUint16(b[12:], uint16(x))
	253	+	binary.LittleEndian.PutUint16(b[14:], uint16(y))
	254	+	binary.LittleEndian.PutUint16(b[16:], 100)
	255	+	binary.LittleEndian.PutUint16(b[18:], 50)
	256	+	b[22] = 1
	257	+	})
	258	+	}
	259	+
	260	+	func (p *x11Peer) mapNotify(win uint32) {
	261	+	p.event(19, func(b *[32]byte) {
	262	+	binary.LittleEndian.PutUint32(b[4:], x11PeerRoot)
	263	+	binary.LittleEndian.PutUint32(b[8:], win)
	264	+	b[12] = 1
	265	+	})
	266	+	}
	267	+
	268	+	// configureNotify moves and resizes a window (root SubstructureNotify form).
	269	+	func (p *x11Peer) configureNotify(win uint32, x, y int16, w, h uint16) {
	270	+	p.event(22, func(b *[32]byte) {
	271	+	binary.LittleEndian.PutUint32(b[4:], x11PeerRoot)
	272	+	binary.LittleEndian.PutUint32(b[8:], win)
	273	+	binary.LittleEndian.PutUint16(b[16:], uint16(x))
	274	+	binary.LittleEndian.PutUint16(b[18:], uint16(y))
	275	+	binary.LittleEndian.PutUint16(b[20:], w)
	276	+	binary.LittleEndian.PutUint16(b[22:], h)
	277	+	b[24] = 1
	278	+	})
	279	+	}
	280	+
	281	+	func (p *x11Peer) windowEvent(code uint8, win uint32) {
	282	+	p.event(code, func(b *[32]byte) {
	283	+	binary.LittleEndian.PutUint32(b[4:], x11PeerRoot)
	284	+	binary.LittleEndian.PutUint32(b[8:], win)
	285	+	})
	286	+	}
	287	+
	288	+	func (p *x11Peer) mapRequest(win uint32) { p.windowEvent(20, win) }
	289	+	func (p *x11Peer) unmapNotify(win uint32) { p.windowEvent(18, win) }
	290	+	func (p *x11Peer) destroyNotify(win uint32) { p.windowEvent(17, win) }
	291	+
	292	+	func (p *x11Peer) propertyNotify(win, atom uint32) {
	293	+	p.event(28, func(b *[32]byte) {
	294	+	binary.LittleEndian.PutUint32(b[4:], win)
	295	+	binary.LittleEndian.PutUint32(b[8:], atom)
	296	+	})
	297	+	}
	298	+
	299	+	func (p *x11Peer) clientMessage(win uint32, typ string, data ...uint32) {
	300	+	t := p.atom(typ)
	301	+	p.event(33, func(b *[32]byte) {
	302	+	b[1] = 32
	303	+	binary.LittleEndian.PutUint32(b[4:], win)
	304	+	binary.LittleEndian.PutUint32(b[8:], t)
	305	+	for i, d := range data {
	306	+	binary.LittleEndian.PutUint32(b[12+4*i:], d)
	307	+	}
	308	+	})
	309	+	}
	310	+
	311	+	func (p *x11Peer) requests() []x11Req {
	312	+	p.mu.Lock()
	313	+	defer p.mu.Unlock()
	314	+	return append([]x11Req(nil), p.reqs...)
	315	+	}
	316	+
	317	+	// waitReq waits for a request after the first skip ones that satisfies match.
	318	+	func (p *x11Peer) waitReq(skip int, match func(x11Req) bool) (x11Req, int) {
	319	+	p.t.Helper()
	320	+	deadline := time.Now().Add(5 * time.Second)
	321	+	for time.Now().Before(deadline) {
	322	+	reqs := p.requests()
	323	+	for i := skip; i < len(reqs); i++ {
	324	+	if match(reqs[i]) {
	325	+	return reqs[i], i + 1
	326	+	}
	327	+	}
	328	+	time.Sleep(time.Millisecond)
	329	+	}
	330	+	p.t.Fatal("x11 peer: expected request never arrived")
	331	+	return x11Req{}, 0
	332	+	}

A internal/adapters/wayland/x11window.go +439 -0

@@ -0,0 +1,439 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"github.com/bnema/go-wayland-bindings/server/wayland"
	5	+	"github.com/bnema/go-wayland-bindings/server/xwaylandshell"
	6	+	"github.com/bnema/neferwl/internal/adapters/wayland/xwm"
	7	+	"github.com/bnema/neferwl/internal/ports"
	8	+	"github.com/bnema/purego-libwayland/server"
	9	+	)
	10	+
	11	+	// x11Window is the X11 role of a window: the XWM slot, the window's X id and
	12	+	// the wl_surface Xwayland paired with it. Display goroutine only.
	13	+	type x11Window struct {
	14	+	server *Server
	15	+	slot xwm.Slot
	16	+	xid uint32
	17	+	surface *surface
	18	+	info xwm.WindowInfo
	19	+	// ready is set once the XWM read the window's properties (Ready).
	20	+	ready bool
	21	+	// override marks an override-redirect window: tracked and drawn, never a
	22	+	// toplevel nor keyboard focus. rect is its layout rect, noInput keeps the
	23	+	// pointer off it.
	24	+	override bool
	25	+	noInput bool
	26	+	rect ports.Rect
	27	+	}
	28	+
	29	+	// xwaylandRestricted are the globals only the Xwayland client may see.
	30	+	func xwaylandRestricted(iface string) bool {
	31	+	return iface == "xwayland_shell_v1" \|\| iface == "zwp_xwayland_keyboard_grab_manager_v1"
	32	+	}
	33	+
	34	+	// globalVisible is the display's global filter: the Xwayland-only globals
	35	+	// are visible to, and bindable by, the Xwayland client alone.
	36	+	func (s Server) globalVisible(c server.Client, g server.Global) bool {
	37	+	if g == s.xdgPrivate {
	38	+	return s.xwayland.client != (server.Client{}) && c == s.xwayland.client
	39	+	}
	40	+	if g == s.xdgPublic {
	41	+	return c != s.xwayland.client
	42	+	}
	43	+	if xwaylandRestricted(g.Interface()) {
	44	+	return s.xwayland.client != (server.Client{}) && c == s.xwayland.client
	45	+	}
	46	+	return true
	47	+	}
	48	+
	49	+	func registerXwaylandShell(d server.Display, s Server) error {
	50	+	return xwaylandshell.NewXwaylandShellV1Global(d, 1, func(c server.Client, v, id uint32) {
	51	+	_, _ = xwaylandshell.NewXwaylandShellV1(c, int32(v), id, xwaylandShell{s})
	52	+	})
	53	+	}
	54	+
	55	+	type xwaylandShell struct{ s *Server }
	56	+
	57	+	func (xwaylandShell) Destroy(*xwaylandshell.XwaylandShellV1) {}
	58	+
	59	+	func (h xwaylandShell) GetXwaylandSurface(r xwaylandshell.XwaylandShellV1, id uint32, w wayland.Surface) {
	60	+	surf := h.s.surfaceOf(w)
	61	+	if surf == nil {
	62	+	return
	63	+	}
	64	+	if surf.kind != roleNone {
	65	+	r.PostError(uint32(xwaylandshell.XwaylandShellV1ErrorRole), "surface already has a role")
	66	+	return
	67	+	}
	68	+	if _, err := xwaylandshell.NewXwaylandSurfaceV1(r.Client(), r.Version(), id, xwaylandSurface{h.s, surf}); err != nil {
	69	+	return
	70	+	}
	71	+	surf.kind = roleX11
	72	+	}
	73	+
	74	+	type xwaylandSurface struct {
	75	+	s *Server
	76	+	surf *surface
	77	+	}
	78	+
	79	+	func (x xwaylandSurface) SetSerial(r *xwaylandshell.XwaylandSurfaceV1, lo, hi uint32) {
	80	+	serial := uint64(hi)<<32 \| uint64(lo)
	81	+	switch {
	82	+	case x.surf.x11Serial != 0:
	83	+	r.PostError(uint32(xwaylandshell.XwaylandSurfaceV1ErrorAlreadyAssociated), "serial already set")
	84	+	case serial == 0:
	85	+	r.PostError(uint32(xwaylandshell.XwaylandSurfaceV1ErrorInvalidSerial), "serial is zero")
	86	+	default:
	87	+	x.surf.x11Serial = serial
	88	+	if x.s.xwm != nil {
	89	+	x.s.xwm.SetSerial(x.surf.identity, serial)
	90	+	}
	91	+	}
	92	+	}
	93	+
	94	+	func (xwaylandSurface) Destroy(*xwaylandshell.XwaylandSurfaceV1) {}
	95	+
	96	+	// installXWM makes x the server's window manager. Display goroutine only.
	97	+	func (s Server) installXWM(x xwm.XWM) {
	98	+	s.teardownXWM()
	99	+	s.xwm = x
	100	+	x.UseSpace(&s.xspace)
	101	+	if err := x.Attach(s.display, hostImpl{s}); err != nil {
	102	+	s.log.Warn().Err(err).Msg("X11 window management disabled")
	103	+	s.xwm = nil
	104	+	x.CloseConn()
	105	+	return
	106	+	}
	107	+	// Serials sent before the XWM was attached pair now.
	108	+	for _, surf := range s.surfaces {
	109	+	if surf.kind == roleX11 && surf.x11Serial != 0 && surf.x11win == nil {
	110	+	x.SetSerial(surf.identity, surf.x11Serial)
	111	+	}
	112	+	}
	113	+	x.LayoutChanged(true)
	114	+	}
	115	+
	116	+	// teardownXWM closes the window manager, dropping its windows. Idempotent.
	117	+	func (s *Server) teardownXWM() {
	118	+	if x := s.xwm; x != nil {
	119	+	s.xwm = nil
	120	+	x.Close()
	121	+	}
	122	+	}
	123	+
	124	+	// x11Configure forwards the latest core configure of an X11 window.
	125	+	func (s Server) x11Configure(w window) {
	126	+	if s.xwm != nil {
	127	+	s.xwm.Configure(w.x11.slot, w.last)
	128	+	}
	129	+	}
	130	+
	131	+	// x11Close asks an X11 window to close.
	132	+	func (s Server) x11Close(w window) {
	133	+	if s.xwm != nil {
	134	+	s.xwm.CloseWindow(w.x11.slot)
	135	+	}
	136	+	}
	137	+
	138	+	// x11Place forwards core's position of an X11 window's client rect.
	139	+	func (s *Server) x11Place(c ports.PlaceWindow) {
	140	+	if w := s.windows[c.ID]; w != nil && w.x11 != nil && s.xwm != nil {
	141	+	s.xwm.Place(w.x11.slot, c.X, c.Y)
	142	+	}
	143	+	}
	144	+
	145	+	// x11Focus tells the XWM which X window holds the keyboard focus, none when a
	146	+	// native window does.
	147	+	func (s *Server) x11Focus() {
	148	+	if s.xwm == nil {
	149	+	return
	150	+	}
	151	+	var slot xwm.Slot
	152	+	if w := s.windows[s.seat.focused]; w != nil && w.x11 != nil {
	153	+	slot = w.x11.slot
	154	+	}
	155	+	s.xwm.Focus(slot)
	156	+	}
	157	+
	158	+	// hostImpl is the server as the XWM sees it.
	159	+	type hostImpl struct{ s *Server }
	160	+
	161	+	func (h hostImpl) window(slot xwm.Slot) *window { return h.s.x11Slots[slot] }
	162	+
	163	+	func (h hostImpl) Created(slot xwm.Slot, xid uint32) ports.WindowID {
	164	+	s := h.s
	165	+	w := &window{id: s.nextWindow}
	166	+	w.x11 = &x11Window{server: s, slot: slot, xid: xid}
	167	+	s.nextWindow++
	168	+	s.windows[w.id] = w
	169	+	s.x11Slots[slot] = w
	170	+	return w.id
	171	+	}
	172	+
	173	+	func (h hostImpl) Ready(slot xwm.Slot, info xwm.WindowInfo) {
	174	+	w := h.window(slot)
	175	+	if w == nil {
	176	+	return
	177	+	}
	178	+	w.x11.info, w.x11.ready = info, true
	179	+	w.title, w.appID, w.modal = info.Title, info.AppID, info.Modal
	180	+	w.parent = h.window(info.Parent)
	181	+	// A surface associated and committed earlier maps now.
	182	+	w.x11.tryMap()
	183	+	}
	184	+
	185	+	func (h hostImpl) Associate(slot xwm.Slot, surfaceID uint64) {
	186	+	w := h.window(slot)
	187	+	surf := h.s.surfaceByIdentity[surfaceID]
	188	+	if w == nil \|\| surf == nil \|\| surf.kind != roleX11 {
	189	+	return
	190	+	}
	191	+	x := w.x11
	192	+	if x.surface != nil && x.surface != surf {
	193	+	// A new surface replaces the shown one: core sees a remap.
	194	+	w.unmap()
	195	+	}
	196	+	x.drop()
	197	+	x.surface, surf.x11win = surf, w
	198	+	surf.role = func(buffer bool) {
	199	+	switch {
	200	+	case surf.destroyed:
	201	+	w.unmap()
	202	+	if x.surface == surf {
	203	+	x.surface = nil
	204	+	}
	205	+	surf.x11win = nil
	206	+	case buffer:
	207	+	x.tryMap()
	208	+	case w.mapped:
	209	+	w.unmap()
	210	+	}
	211	+	}
	212	+	// The buffer may have been committed before the pairing.
	213	+	x.tryMap()
	214	+	}
	215	+
	216	+	func (h hostImpl) Dissociate(slot xwm.Slot, destroyed bool) {
	217	+	w := h.window(slot)
	218	+	if w == nil {
	219	+	return
	220	+	}
	221	+	w.unmap()
	222	+	w.x11.drop()
	223	+	w.x11.ready = false
	224	+	if destroyed {
	225	+	for _, c := range h.s.windows {
	226	+	if c.parent == w {
	227	+	c.parent = nil
	228	+	}
	229	+	}
	230	+	delete(h.s.windows, w.id)
	231	+	delete(h.s.x11Slots, slot)
	232	+	h.s.foreignToplevelGone(w)
	233	+	}
	234	+	}
	235	+
	236	+	func (h hostImpl) Title(slot xwm.Slot, title string) {
	237	+	if w := h.window(slot); w != nil && w.title != title {
	238	+	w.title = title
	239	+	h.s.toplevelChanged(w)
	240	+	if w.mapped {
	241	+	h.s.castInventoryChanged()
	242	+	}
	243	+	}
	244	+	}
	245	+
	246	+	func (h hostImpl) AppID(slot xwm.Slot, appID string) {
	247	+	w := h.window(slot)
	248	+	if w == nil \|\| w.appID == appID {
	249	+	return
	250	+	}
	251	+	w.appID = appID
	252	+	if w.mapped {
	253	+	h.s.emit(ports.WindowAppID{ID: w.id, AppID: appID})
	254	+	h.s.toplevelChanged(w)
	255	+	h.s.castInventoryChanged()
	256	+	}
	257	+	}
	258	+
	259	+	func (h hostImpl) Parent(slot xwm.Slot, parent xwm.Slot) {
	260	+	if w := h.window(slot); w != nil {
	261	+	w.setParent(h.window(parent))
	262	+	}
	263	+	}
	264	+
	265	+	func (h hostImpl) Fullscreen(slot xwm.Slot, on bool) {
	266	+	w := h.window(slot)
	267	+	if w == nil {
	268	+	return
	269	+	}
	270	+	w.x11.info.Fullscreen = on
	271	+	if w.mapped {
	272	+	h.s.emit(ports.WindowFullscreenRequest{ID: w.id, Fullscreen: on})
	273	+	}
	274	+	}
	275	+
	276	+	// drop unlinks the window from its surface.
	277	+	func (x *x11Window) drop() {
	278	+	if surf := x.surface; surf != nil {
	279	+	surf.x11win, surf.role = nil, nil
	280	+	x.surface = nil
	281	+	}
	282	+	}
	283	+
	284	+	// tryMap maps the window once the XWM knows it and its surface shows a buffer.
	285	+	func (x *x11Window) tryMap() {
	286	+	surf := x.surface
	287	+	if surf == nil {
	288	+	return
	289	+	}
	290	+	w := surf.x11win
	291	+	if w == nil \|\| w.mapped \|\| !x.ready \|\| surf.destroyed \|\| surf.current == nil {
	292	+	return
	293	+	}
	294	+	s := x.server
	295	+	w.mapped = true
	296	+	w.gen++
	297	+	w.floating = x.info.Floating
	298	+	w.floatW, w.floatH = 0, 0
	299	+	if w.floating {
	300	+	w.floatW, w.floatH = x.info.Width, x.info.Height
	301	+	}
	302	+	var parent ports.WindowID
	303	+	if w.parent != nil && w.parent.mapped {
	304	+	parent = w.parent.id
	305	+	}
	306	+	s.emit(ports.WindowMapped{ID: w.id, AppID: w.appID, PID: x.info.PID, Floating: w.floating, Width: w.floatW, Height: w.floatH, Parent: parent, Positioned: true, Modal: w.modal, Remap: w.gen > 1})
	307	+	if x.info.Fullscreen {
	308	+	s.emit(ports.WindowFullscreenRequest{ID: w.id, Fullscreen: true})
	309	+	}
	310	+	s.syncInhibitors()
	311	+	s.toplevelChanged(w)
	312	+	s.castInventoryChanged()
	313	+	s.log.Info().Uint64("id", uint64(w.id)).Uint32("xid", x.xid).Str("app_id", w.appID).Bool("floating", w.floating).Msg("x11 window mapped")
	314	+	// Called from a commit, the content follows right after; called from the
	315	+	// pairing, the surface already shows a buffer and is published now.
	316	+	if surf.has {
	317	+	surf.resetInputEmission()
	318	+	surf.redraw()
	319	+	surf.emitInput()
	320	+	}
	321	+	}
	322	+
	323	+	// OverrideMapped starts tracking an override-redirect window. It is announced
	324	+	// to core on the paired surface's first buffer commit, so it is never drawn
	325	+	// without content.
	326	+	func (h hostImpl) OverrideMapped(slot xwm.Slot, xid uint32, surfaceID uint64, x, y, w, h2 int, noInput bool) {
	327	+	s := h.s
	328	+	surf := s.surfaceByIdentity[surfaceID]
	329	+	if surf == nil \|\| surf.kind != roleX11 \|\| surf.x11win != nil {
	330	+	return
	331	+	}
	332	+	if old := s.x11Slots[slot]; old != nil {
	333	+	h.OverrideGone(slot)
	334	+	}
	335	+	win := &window{id: s.nextWindow}
	336	+	win.x11 = &x11Window{server: s, slot: slot, xid: xid, override: true, noInput: noInput, rect: ports.Rect{X: x, Y: y, W: w, H: h2}}
	337	+	s.nextWindow++
	338	+	s.windows[win.id] = win
	339	+	s.x11Slots[slot] = win
	340	+	ox := win.x11
	341	+	ox.surface, surf.x11win = surf, win
	342	+	surf.role = func(buffer bool) {
	343	+	switch {
	344	+	case surf.destroyed:
	345	+	ox.hide()
	346	+	ox.surface = nil
	347	+	surf.x11win = nil
	348	+	case buffer:
	349	+	ox.show()
	350	+	case win.mapped:
	351	+	ox.hide()
	352	+	}
	353	+	}
	354	+	ox.show()
	355	+	}
	356	+
	357	+	// OverrideMoved records the new layout rect of an override window and, once
	358	+	// shown, tells core. An unchanged rect costs nothing.
	359	+	func (h hostImpl) OverrideMoved(slot xwm.Slot, x, y, w, h2 int) {
	360	+	win := h.s.x11Slots[slot]
	361	+	if win == nil \|\| win.x11 == nil \|\| !win.x11.override {
	362	+	return
	363	+	}
	364	+	r := ports.Rect{X: x, Y: y, W: w, H: h2}
	365	+	if r == win.x11.rect {
	366	+	return
	367	+	}
	368	+	win.x11.rect = r
	369	+	if win.mapped {
	370	+	h.s.emit(ports.UnmanagedMoved{ID: win.id, X: x, Y: y, Width: w, Height: h2})
	371	+	win.x11.surface.sendTreeScale()
	372	+	}
	373	+	}
	374	+
	375	+	// OverrideGone ends an override window: unmapped, or destroyed.
	376	+	func (h hostImpl) OverrideGone(slot xwm.Slot) {
	377	+	s := h.s
	378	+	win := s.x11Slots[slot]
	379	+	if win == nil \|\| win.x11 == nil \|\| !win.x11.override {
	380	+	return
	381	+	}
	382	+	win.x11.hide()
	383	+	win.x11.drop()
	384	+	delete(s.windows, win.id)
	385	+	delete(s.x11Slots, slot)
	386	+	}
	387	+
	388	+	// show announces the window to core once its surface has content.
	389	+	func (x *x11Window) show() {
	390	+	surf := x.surface
	391	+	if surf == nil \|\| surf.x11win == nil \|\| surf.destroyed \|\| surf.current == nil {
	392	+	return
	393	+	}
	394	+	w := surf.x11win
	395	+	if w.mapped {
	396	+	return
	397	+	}
	398	+	s := x.server
	399	+	w.mapped = true
	400	+	r := x.rect
	401	+	s.emit(ports.UnmanagedMapped{ID: w.id, X: r.X, Y: r.Y, Width: r.W, Height: r.H, NoInput: x.noInput})
	402	+	surf.sendTreeScale()
	403	+	if surf.has {
	404	+	surf.resetInputEmission()
	405	+	surf.redraw()
	406	+	surf.emitInput()
	407	+	}
	408	+	}
	409	+
	410	+	// hide withdraws a shown override window from core and the seat.
	411	+	func (x *x11Window) hide() {
	412	+	if x.surface == nil \|\| x.surface.x11win == nil {
	413	+	return
	414	+	}
	415	+	w := x.surface.x11win
	416	+	s := x.server
	417	+	if s.seat.pointerFocus == w.id {
	418	+	s.changePointerFocus(0, 0, 0)
	419	+	}
	420	+	if !w.mapped {
	421	+	return
	422	+	}
	423	+	w.mapped = false
	424	+	x.surface.resetInputEmission()
	425	+	s.emit(ports.UnmanagedUnmapped{ID: w.id})
	426	+	s.emitContent(ports.SurfaceContent{ID: w.id}, damage{full: true})
	427	+	}
	428	+
	429	+	// isOverride reports whether w is an override-redirect X11 window.
	430	+	func (w *window) isOverride() bool { return w.x11 != nil && w.x11.override }
	431	+
	432	+	// overrideOutput is the name of the output under the origin of an override
	433	+	// window's rect, "" when none.
	434	+	func (s Server) overrideOutput(w window) string {
	435	+	if o, ok := s.outputPlaces.At(float64(w.x11.rect.X), float64(w.x11.rect.Y)); ok {
	436	+	return o.Info.Name
	437	+	}
	438	+	return ""
	439	+	}

A internal/adapters/wayland/x11window_test.go +353 -0

@@ -0,0 +1,353 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"context"
	5	+	"encoding/binary"
	6	+	"net"
	7	+	"os"
	8	+	"testing"
	9	+	"time"
	10	+
	11	+	"github.com/bnema/go-wayland-bindings/server/pointerconstraints"
	12	+	"github.com/bnema/go-wayland-bindings/server/wayland"
	13	+	"github.com/bnema/go-wayland-bindings/server/xdgshell"
	14	+	"github.com/bnema/go-wayland-bindings/server/xwaylandshell"
	15	+	"github.com/bnema/neferwl/internal/ports"
	16	+	"github.com/bnema/wlturbo"
	17	+	"golang.org/x/sys/unix"
	18	+	)
	19	+
	20	+	var x11Serial = uint64(0x1234_0000_0042)
	21	+
	22	+	// x11Rig is a server with an Xwayland client (a real wlturbo client on the
	23	+	// adopted descriptor), a scripted X peer on the WM descriptor and the XWM
	24	+	// between them.
	25	+	type x11Rig struct {
	26	+	t *testing.T
	27	+	s *Server
	28	+	events chan ports.ClientEvent
	29	+	commands chan ports.ClientCommand
	30	+	dir string
	31	+	xc *wlturbo.Display
	32	+	peer *x11Peer
	33	+	stop func()
	34	+	shell uint32
	35	+	comp uint32
	36	+	}
	37	+
	38	+	func newX11Rig(t testing.T) x11Rig {
	39	+	t.Helper()
	40	+	s, events, commands, dir := lifecycleServer(t)
	41	+	r := &x11Rig{t: t, s: s, events: events, commands: commands, dir: dir}
	42	+	wl := xwaylandPair(t)
	43	+	s.AttachXwayland(wl[0])
	44	+	f := os.NewFile(uintptr(wl[1]), "xwayland client")
	45	+	wl[1] = -1
	46	+	conn, err := net.FileConn(f)
	47	+	f.Close()
	48	+	if err != nil {
	49	+	t.Fatal(err)
	50	+	}
	51	+	if r.xc, err = wlturbo.ConnectFromConn(conn); err != nil {
	52	+	t.Fatal(err)
	53	+	}
	54	+	t.Cleanup(func() { _ = r.xc.Close(); forgetWireClient(r.xc) })
	55	+	if err := r.xc.Roundtrip(); err != nil {
	56	+	t.Fatal(err)
	57	+	}
	58	+	wm, peer := startX11Peer(t)
	59	+	r.peer = peer
	60	+	r.stop = s.AttachXWM(context.Background(), wm)
	61	+	t.Cleanup(func() { r.stop() })
	62	+	r.shell = bindProtocol(t, r.xc, "xwayland_shell_v1")
	63	+	r.comp = bindProtocol(t, r.xc, "wl_compositor")
	64	+	return r
	65	+	}
	66	+
	67	+	// x11Window announces and maps X window win with the properties of an
	68	+	// ordinary client, and waits for the XWM to be ready for it.
	69	+	func (r *x11Rig) x11Window(win uint32) {
	70	+	r.t.Helper()
	71	+	p := r.peer
	72	+	str := uint32(31) // XA_STRING
	73	+	p.setProp(win, 67, str, 8, []byte("inst\x00Class\x00")) // WM_CLASS
	74	+	p.setProp(win, p.atom("_NET_WM_NAME"), p.atom("UTF8_STRING"), 8, []byte("net title"))
	75	+	p.setProp(win, p.atom("_NET_WM_PID"), 6, 32, x11le32(4242))
	76	+	p.createNotify(win)
	77	+	skip := len(p.requests())
	78	+	p.mapRequest(win)
	79	+	p.waitReq(skip, func(q x11Req) bool { return q.major == 8 && q.u32(4) == win }) // MapWindow
	80	+	}
	81	+
	82	+	// pair sends the serial from both sides and commits a buffer on the surface.
	83	+	// It returns the wl_surface id of the Xwayland client.
	84	+	func (r *x11Rig) pair(win uint32, serial uint64) uint32 {
	85	+	r.t.Helper()
	86	+	r.peer.clientMessage(win, "WL_SURFACE_SERIAL", uint32(serial), uint32(serial>>32))
	87	+	surf, xs := r.xc.AllocateID(), r.xc.AllocateID()
	88	+	requestProtocol(r.t, r.xc, r.comp, wayland.CompositorRequestCreateSurface, surf)
	89	+	registerProtocol(r.t, r.xc, surf)
	90	+	requestProtocol(r.t, r.xc, r.shell, xwaylandshell.XwaylandShellV1RequestGetXwaylandSurface, xs, surf)
	91	+	registerProtocol(r.t, r.xc, xs)
	92	+	requestProtocol(r.t, r.xc, xs, xwaylandshell.XwaylandSurfaceV1RequestSetSerial, uint32(serial), uint32(serial>>32))
	93	+	requestProtocol(r.t, r.xc, surf, wayland.SurfaceRequestAttach, shmBuffer(r.t, r.xc), int32(0), int32(0))
	94	+	requestProtocol(r.t, r.xc, surf, wayland.SurfaceRequestCommit)
	95	+	if err := r.xc.Roundtrip(); err != nil {
	96	+	r.t.Fatal(err)
	97	+	}
	98	+	return surf
	99	+	}
	100	+
	101	+	func awaitEvent[T ports.ClientEvent](t *testing.T, events <-chan ports.ClientEvent) T {
	102	+	t.Helper()
	103	+	for deadline := time.After(3 * time.Second); ; {
	104	+	select {
	105	+	case ev := <-events:
	106	+	if v, ok := ev.(T); ok {
	107	+	return v
	108	+	}
	109	+	case <-deadline:
	110	+	var zero T
	111	+	t.Fatalf("no %T event", zero)
	112	+	}
	113	+	}
	114	+	}
	115	+
	116	+	func TestXwaylandGlobalFilter(t *testing.T) {
	117	+	s, _, _, dir := lifecycleServer(t)
	118	+	other := protocolClient(t, s, dir)
	119	+	for _, iface := range []string{"xwayland_shell_v1", "zwp_xwayland_keyboard_grab_manager_v1"} {
	120	+	if _, ok := other.Registry().FindGlobal(iface); ok {
	121	+	t.Errorf("ordinary client sees %s", iface)
	122	+	}
	123	+	}
	124	+	if _, ok := other.Registry().FindGlobal("xdg_wm_base"); !ok {
	125	+	t.Error("ordinary globals filtered out")
	126	+	}
	127	+	r := newX11Rig(t)
	128	+	if _, ok := r.xc.Registry().FindGlobal("xwayland_shell_v1"); !ok {
	129	+	t.Error("Xwayland client misses xwayland_shell_v1")
	130	+	}
	131	+	// The ordinary client of the same server still does not see it.
	132	+	late := protocolClient(t, r.s, r.dir)
	133	+	if _, ok := late.Registry().FindGlobal("xwayland_shell_v1"); ok {
	134	+	t.Error("ordinary client sees xwayland_shell_v1 while Xwayland is attached")
	135	+	}
	136	+	}
	137	+
	138	+	func TestXwaylandShellRoleErrors(t *testing.T) {
	139	+	for _, scenario := range []string{"xdg role first", "serial twice", "zero serial"} {
	140	+	t.Run(scenario, func(t *testing.T) {
	141	+	r := newX11Rig(t)
	142	+	c := r.xc
	143	+	wmBase := bindProtocol(t, c, "xdg_wm_base")
	144	+	surf := c.AllocateID()
	145	+	requestProtocol(t, c, r.comp, wayland.CompositorRequestCreateSurface, surf)
	146	+	registerProtocol(t, c, surf)
	147	+	xs := c.AllocateID()
	148	+	switch scenario {
	149	+	case "xdg role first":
	150	+	xdg := xs
	151	+	requestProtocol(t, c, wmBase, xdgshell.WmBaseRequestGetXdgSurface, xdg, surf)
	152	+	requestProtocol(t, c, r.shell, xwaylandshell.XwaylandShellV1RequestGetXwaylandSurface, c.AllocateID(), surf)
	153	+	expectProtocolError(t, c, r.shell, uint32(xwaylandshell.XwaylandShellV1ErrorRole))
	154	+	case "serial twice":
	155	+	requestProtocol(t, c, r.shell, xwaylandshell.XwaylandShellV1RequestGetXwaylandSurface, xs, surf)
	156	+	registerProtocol(t, c, xs)
	157	+	requestProtocol(t, c, xs, xwaylandshell.XwaylandSurfaceV1RequestSetSerial, uint32(1), uint32(0))
	158	+	requestProtocol(t, c, xs, xwaylandshell.XwaylandSurfaceV1RequestSetSerial, uint32(2), uint32(0))
	159	+	expectProtocolError(t, c, xs, uint32(xwaylandshell.XwaylandSurfaceV1ErrorAlreadyAssociated))
	160	+	case "zero serial":
	161	+	requestProtocol(t, c, r.shell, xwaylandshell.XwaylandShellV1RequestGetXwaylandSurface, xs, surf)
	162	+	registerProtocol(t, c, xs)
	163	+	requestProtocol(t, c, xs, xwaylandshell.XwaylandSurfaceV1RequestSetSerial, uint32(0), uint32(0))
	164	+	expectProtocolError(t, c, xs, uint32(xwaylandshell.XwaylandSurfaceV1ErrorInvalidSerial))
	165	+	}
	166	+	})
	167	+	}
	168	+	}
	169	+
	170	+	// A window announced by the X server and a surface carrying the same serial
	171	+	// map as one neferwl window with the X11 info; core commands reach the X side.
	172	+	func TestX11WindowLifecycle(t *testing.T) {
	173	+	r := newX11Rig(t)
	174	+	win := uint32(x11Win)
	175	+	r.x11Window(win)
	176	+	surf := r.pair(win, x11Serial)
	177	+
	178	+	m := awaitEvent[ports.WindowMapped](t, r.events)
	179	+	if m.AppID != "Class" \|\| m.PID != 4242 \|\| !m.Positioned \|\| m.Floating \|\| m.Slot != "" {
	180	+	t.Fatalf("mapped %+v", m)
	181	+	}
	182	+
	183	+	// Title and app id changes.
	184	+	p := r.peer
	185	+	p.setProp(win, p.atom("_NET_WM_NAME"), p.atom("UTF8_STRING"), 8, []byte("renamed"))
	186	+	p.propertyNotify(win, p.atom("_NET_WM_NAME"))
	187	+	p.setProp(win, 67, 31, 8, []byte("inst\x00Other\x00"))
	188	+	p.propertyNotify(win, 67)
	189	+	if a := awaitEvent[ports.WindowAppID](t, r.events); a.ID != m.ID \|\| a.AppID != "Other" {
	190	+	t.Fatalf("app id %+v", a)
	191	+	}
	192	+	var title string
	193	+	waitTrue(t, "title", func() bool {
	194	+	r.s.display.Do(func() {
	195	+	if w := r.s.windows[m.ID]; w != nil {
	196	+	title = w.title
	197	+	}
	198	+	})
	199	+	return title == "renamed"
	200	+	})
	201	+
	202	+	// Fullscreen request from the client.
	203	+	p.clientMessage(win, "_NET_WM_STATE", 1, p.atom("_NET_WM_STATE_FULLSCREEN"))
	204	+	if f := awaitEvent[ports.WindowFullscreenRequest](t, r.events); f.ID != m.ID \|\| !f.Fullscreen \|\| f.External {
	205	+	t.Fatalf("fullscreen %+v", f)
	206	+	}
	207	+
	208	+	// Configure and Place reach the X server as ConfigureWindow.
	209	+	skip := len(p.requests())
	210	+	r.commands <- ports.ConfigureWindow{ID: m.ID, Width: 640, Height: 360, Visible: true}
	211	+	cfg, skip := p.waitReq(skip, func(q x11Req) bool { return q.major == x11OpConfigureWindow && q.u32(4) == win })
	212	+	if w := binary.LittleEndian.Uint32(cfg.raw[20:]); w != 640 {
	213	+	t.Fatalf("configured width %d, want 640 (%x)", w, cfg.raw)
	214	+	}
	215	+	r.commands <- ports.PlaceWindow{ID: m.ID, X: 10, Y: 20}
	216	+	cfg, _ = p.waitReq(skip, func(q x11Req) bool { return q.major == x11OpConfigureWindow && q.u32(4) == win })
	217	+	if x, y := int32(binary.LittleEndian.Uint32(cfg.raw[12:])), int32(binary.LittleEndian.Uint32(cfg.raw[16:])); x != 10 \|\| y != 20 {
	218	+	t.Fatalf("placed at %d,%d, want 10,20", x, y)
	219	+	}
	220	+
	221	+	// Focus.
	222	+	skip = len(p.requests())
	223	+	r.commands <- ports.FocusWindow{ID: m.ID}
	224	+	if f, _ := p.waitReq(skip, func(q x11Req) bool { return q.major == x11OpSetInputFocus }); f.u32(4) != win {
	225	+	t.Fatalf("focus on %#x, want %#x", f.u32(4), win)
	226	+	}
	227	+
	228	+	// Close: without WM_DELETE_WINDOW the client is killed.
	229	+	skip = len(p.requests())
	230	+	r.commands <- ports.CloseWindow{ID: m.ID}
	231	+	if k, _ := p.waitReq(skip, func(q x11Req) bool { return q.major == x11OpKillClient }); k.u32(4) != win {
	232	+	t.Fatalf("killed %#x, want %#x", k.u32(4), win)
	233	+	}
	234	+
	235	+	// Destroying the surface unmaps the window.
	236	+	requestProtocol(t, r.xc, surf, wayland.SurfaceRequestDestroy)
	237	+	if err := r.xc.Roundtrip(); err != nil {
	238	+	t.Fatal(err)
	239	+	}
	240	+	if u := awaitEvent[ports.WindowUnmapped](t, r.events); u.ID != m.ID {
	241	+	t.Fatalf("unmapped %+v", u)
	242	+	}
	243	+	}
	244	+
	245	+	// The serial may arrive on the Wayland side before the X side knows it, and
	246	+	// an UnmapNotify unmaps; a remap pairs again.
	247	+	func TestX11WindowSurfaceFirstAndRemap(t *testing.T) {
	248	+	r := newX11Rig(t)
	249	+	win := uint32(x11Win)
	250	+	p := r.peer
	251	+	surf, xs := r.xc.AllocateID(), r.xc.AllocateID()
	252	+	requestProtocol(t, r.xc, r.comp, wayland.CompositorRequestCreateSurface, surf)
	253	+	registerProtocol(t, r.xc, surf)
	254	+	requestProtocol(t, r.xc, r.shell, xwaylandshell.XwaylandShellV1RequestGetXwaylandSurface, xs, surf)
	255	+	registerProtocol(t, r.xc, xs)
	256	+	requestProtocol(t, r.xc, xs, xwaylandshell.XwaylandSurfaceV1RequestSetSerial, uint32(x11Serial), uint32(x11Serial>>32))
	257	+	requestProtocol(t, r.xc, surf, wayland.SurfaceRequestAttach, shmBuffer(t, r.xc), int32(0), int32(0))
	258	+	requestProtocol(t, r.xc, surf, wayland.SurfaceRequestCommit)
	259	+	if err := r.xc.Roundtrip(); err != nil {
	260	+	t.Fatal(err)
	261	+	}
	262	+	r.x11Window(win)
	263	+	p.clientMessage(win, "WL_SURFACE_SERIAL", uint32(x11Serial), uint32(x11Serial>>32))
	264	+	m := awaitEvent[ports.WindowMapped](t, r.events)
	265	+	if m.Remap {
	266	+	t.Fatalf("first map flagged as remap: %+v", m)
	267	+	}
	268	+	p.unmapNotify(win)
	269	+	if u := awaitEvent[ports.WindowUnmapped](t, r.events); u.ID != m.ID {
	270	+	t.Fatalf("unmapped %+v", u)
	271	+	}
	272	+	p.destroyNotify(win)
	273	+	waitTrue(t, "window forgotten", func() bool {
	274	+	gone := false
	275	+	r.s.display.Do(func() { gone = r.s.windows[m.ID] == nil })
	276	+	return gone
	277	+	})
	278	+	}
	279	+
	280	+	// stop closes the XWM: its windows unmap, and the server keeps serving.
	281	+	func TestX11StopUnmapsWindows(t *testing.T) {
	282	+	r := newX11Rig(t)
	283	+	win := uint32(x11Win)
	284	+	r.x11Window(win)
	285	+	r.pair(win, x11Serial)
	286	+	m := awaitEvent[ports.WindowMapped](t, r.events)
	287	+	r.stop()
	288	+	if u := awaitEvent[ports.WindowUnmapped](t, r.events); u.ID != m.ID {
	289	+	t.Fatalf("unmapped %+v", u)
	290	+	}
	291	+	r.s.display.Do(func() {
	292	+	if r.s.xwm != nil \|\| r.s.windows[m.ID] != nil \|\| len(r.s.x11Slots) != 0 {
	293	+	t.Error("XWM state left behind")
	294	+	}
	295	+	})
	296	+	r.stop() // idempotent
	297	+	}
	298	+
	299	+	// Boot gives up as soon as its context ends, even against a silent server,
	300	+	// and leaves the server serving.
	301	+	func TestAttachXWMBootAbortsWithContext(t *testing.T) {
	302	+	s, _, _, dir := lifecycleServer(t)
	303	+	fds, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM\|unix.SOCK_CLOEXEC, 0)
	304	+	if err != nil {
	305	+	t.Fatal(err)
	306	+	}
	307	+	defer unix.Close(fds[1]) // the silent server end
	308	+	ctx, cancel := context.WithCancel(context.Background())
	309	+	done := make(chan func(), 1)
	310	+	go func() { done <- s.AttachXWM(ctx, fds[0]) }()
	311	+	select {
	312	+	case <-done:
	313	+	t.Fatal("AttachXWM returned before the context ended")
	314	+	case <-time.After(150 * time.Millisecond):
	315	+	}
	316	+	cancel()
	317	+	select {
	318	+	case stop := <-done:
	319	+	stop()
	320	+	case <-time.After(2 * time.Second):
	321	+	t.Fatal("AttachXWM did not abort with its context")
	322	+	}
	323	+	assertFDClosed(t, fds[0])
	324	+	protocolClient(t, s, dir) // still serving
	325	+	}
	326	+
	327	+	// Xwayland locks the pointer for games: the constraint reaches core for the
	328	+	// X11 window like for an xdg toplevel.
	329	+	func TestX11WindowPointerLock(t *testing.T) {
	330	+	r := newX11Rig(t)
	331	+	win := uint32(x11Win)
	332	+	r.x11Window(win)
	333	+	surf := r.pair(win, x11Serial)
	334	+	m := awaitEvent[ports.WindowMapped](t, r.events)
	335	+
	336	+	seat := bindProtocol(t, r.xc, "wl_seat")
	337	+	registerProtocol(t, r.xc, seat)
	338	+	pointer := r.xc.AllocateID()
	339	+	requestProtocol(t, r.xc, seat, wayland.SeatRequestGetPointer, pointer)
	340	+	registerProtocol(t, r.xc, pointer)
	341	+	constraints := bindProtocol(t, r.xc, "zwp_pointer_constraints_v1")
	342	+	lock := r.xc.AllocateID()
	343	+	requestProtocol(t, r.xc, constraints, pointerconstraints.ZwpPointerConstraintsV1RequestLockPointer, lock, surf, pointer, uint32(0), uint32(pointerconstraints.ZwpPointerConstraintsV1LifetimePersistent))
	344	+	registerProtocol(t, r.xc, lock)
	345	+	if err := r.xc.Roundtrip(); err != nil {
	346	+	t.Fatal(err)
	347	+	}
	348	+	r.commands <- ports.PointerFocus{ID: m.ID}
	349	+	r.commands <- ports.FocusWindow{ID: m.ID}
	350	+	if got := constrained(t, r.events); got.ID != m.ID \|\| got.Mode != ports.ConstraintLock {
	351	+	t.Fatalf("constrained %+v", got)
	352	+	}
	353	+	}

M internal/adapters/wayland/xdg.go +32 -21


@@ -128,10 +128,12 @@ func (x xdgSurface) Destroy(r xdgshell.Surface) {
128	128
129	129		// window is an xdg_toplevel, or an xdg_popup when popup is set.
130	130		type window struct {
131		-	id ports.WindowID
132		-	toplevel *xdgshell.Toplevel
133		-	popup *popup
134		-	xdg *xdgSurface
	131	+	id ports.WindowID
	132	+	toplevel *xdgshell.Toplevel
	133	+	popup *popup
	134	+	xdg *xdgSurface
	135	+	// x11 is set for the window of an X11 client (x11window.go).
	136	+	x11 *x11Window
135	137		appID, title string
136	138		mapped bool
137	139		// gen counts the mappings: an unmap and a remap is a new toplevel to

@@ -151,8 +153,8 @@ type window struct {
151	153		hasLast bool
152	154		}
153	155
154		-	// sendConfigure sends w.last as xdg_toplevel + xdg_surface configure.
155		-	func (w *window) sendConfigure() {
	156	+	// sendXDGConfigure sends w.last as xdg_toplevel + xdg_surface configure.
	157	+	func (w *window) sendXDGConfigure() {
156	158		c := w.last
157	159		w.toplevel.SendConfigure(int32(c.Width), int32(c.Height), toplevelStates(c, w.toplevel.Version()))
158	160		s := w.xdg.server

@@ -192,24 +194,29 @@ func toplevelStates(c ports.ConfigureWindow, version int32) []byte {
192	194		}
193	195
194	196		func (w *window) unmap() {
195		-	if w.xdg.server.seat.pointerFocus == w.id {
196		-	w.xdg.server.changePointerFocus(0, 0, 0)
	197	+	s := w.srv()
	198	+	if s.seat.pointerFocus == w.id {
	199	+	s.changePointerFocus(0, 0, 0)
197	200		}
198		-	if w.xdg.server.seat.focused == w.id {
199		-	w.xdg.server.changeFocus(0)
	201	+	if s.seat.focused == w.id {
	202	+	s.changeFocus(0)
200	203		}
201	204		if !w.mapped {
202	205		return
203	206		}
204	207		w.mapped = false
205		-	w.xdg.server.toplevelClosed(w.id)
206		-	w.xdg.surface.resetInputEmission()
207		-	w.xdg.configured = false
208		-	w.xdg.acked = false
209		-	w.xdg.serials = nil
210		-	w.xdg.server.emit(ports.WindowUnmapped{ID: w.id})
211		-	w.xdg.server.syncInhibitors()
212		-	w.xdg.server.emitContent(ports.SurfaceContent{ID: w.id}, damage{full: true})
	208	+	s.toplevelClosed(w.id)
	209	+	if surf := w.surf(); surf != nil {
	210	+	surf.resetInputEmission()
	211	+	}
	212	+	if x := w.xdg; x != nil {
	213	+	x.configured = false
	214	+	x.acked = false
	215	+	x.serials = nil
	216	+	}
	217	+	s.emit(ports.WindowUnmapped{ID: w.id})
	218	+	s.syncInhibitors()
	219	+	s.emitContent(ports.SurfaceContent{ID: w.id}, damage{full: true})
213	220		}
214	221		func (x xdgSurface) GetToplevel(r xdgshell.Surface, id uint32) {
215	222		if x.window != nil {

@@ -337,7 +344,7 @@ func (w window) setParent(p window) {
337	344		if p != nil && p.mapped {
338	345		id = p.id
339	346		}
340		-	w.xdg.server.emit(ports.WindowParent{ID: w.id, Parent: id})
	347	+	w.srv().emit(ports.WindowParent{ID: w.id, Parent: id})
341	348		}
342	349		func (t top) SetTitle(_ *xdgshell.Toplevel, title string) {
343	350		if title == t.w.title {

@@ -417,7 +424,7 @@ func (w *window) afterCommit() {
417	424		}
418	425		if fw, fh := w.size(); fw > 0 && fh > 0 && (fw != w.floatW \|\| fh != w.floatH) {
419	426		w.floatW, w.floatH = fw, fh
420		-	w.xdg.server.emit(ports.WindowResized{ID: w.id, Width: fw, Height: fh})
	427	+	w.srv().emit(ports.WindowResized{ID: w.id, Width: fw, Height: fh})
421	428		}
422	429		}
423	430

@@ -431,6 +438,10 @@ func (w *window) floats() bool {
431	438
432	439		// size is the window geometry size, else the surface size, in logical pixels.
433	440		func (w *window) size() (int, int) {
	441	+	if w.xdg == nil {
	442	+	c := w.surf().content
	443	+	return c.LogicalW, c.LogicalH
	444	+	}
434	445		if g := w.xdg.geometry; g.W > 0 && g.H > 0 {
435	446		return g.W, g.H
436	447		}

@@ -441,7 +452,7 @@ func (w *window) size() (int, int) {
441	452		// surfacePoint turns window coordinates (core's, from the geometry origin)
442	453		// into surface coordinates.
443	454		func (w *window) surfacePoint(x, y float64) (float64, float64) {
444		-	g := w.xdg.geometry
	455	+	g := w.geometry()
445	456		return x + float64(g.X), y + float64(g.Y)
446	457		}
447	458

A internal/adapters/wayland/xdgoutputx_test.go +143 -0

@@ -0,0 +1,143 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"slices"
	5	+	"testing"
	6	+
	7	+	"github.com/bnema/neferwl/internal/ports"
	8	+	"github.com/bnema/purego-libwayland/server"
	9	+	"github.com/bnema/wlturbo"
	10	+	)
	11	+
	12	+	// xdgPosProxy records the logical_position events of one zxdg_output_v1.
	13	+	type xdgPosProxy struct {
	14	+	wlturbo.BaseProxy
	15	+	pos [][2]int32
	16	+	}
	17	+
	18	+	func (p xdgPosProxy) Dispatch(e wlturbo.Event) {
	19	+	if e.Opcode == 0 {
	20	+	p.pos = append(p.pos, [2]int32{e.Int32(), e.Int32()})
	21	+	}
	22	+	}
	23	+
	24	+	// xdgOutputsOf binds the xdg-output manager and an xdg-output for every
	25	+	// wl_output of c, and returns what each one reported.
	26	+	func xdgOutputsOf(t testing.T, c wlturbo.Display) []*xdgPosProxy {
	27	+	t.Helper()
	28	+	if err := c.Roundtrip(); err != nil {
	29	+	t.Fatal(err)
	30	+	}
	31	+	var mgrs int
	32	+	var manager uint32
	33	+	for _, g := range c.Registry().GetGlobals() {
	34	+	if g.Interface == "zxdg_output_manager_v1" {
	35	+	mgrs++
	36	+	id, err := bindWireID(c, g.Name, g.Interface, 3)
	37	+	if err != nil {
	38	+	t.Fatal(err)
	39	+	}
	40	+	registerProtocol(t, c, id)
	41	+	manager = id
	42	+	}
	43	+	}
	44	+	if mgrs != 1 {
	45	+	t.Fatalf("client sees %d zxdg_output_manager_v1 globals, want 1", mgrs)
	46	+	}
	47	+	var out []*xdgPosProxy
	48	+	for _, g := range c.Registry().GetGlobals() {
	49	+	if g.Interface != "wl_output" {
	50	+	continue
	51	+	}
	52	+	wo, err := bindWireID(c, g.Name, g.Interface, 4)
	53	+	if err != nil {
	54	+	t.Fatal(err)
	55	+	}
	56	+	xp := &xdgPosProxy{}
	57	+	xp.SetID(c.AllocateID())
	58	+	registerWireProxy(c, xp)
	59	+	requestProtocol(t, c, manager, 1, xp.ID(), wo)
	60	+	out = append(out, xp)
	61	+	}
	62	+	if err := c.Roundtrip(); err != nil {
	63	+	t.Fatal(err)
	64	+	}
	65	+	return out
	66	+	}
	67	+
	68	+	func lastPositions(ps []*xdgPosProxy) [][2]int32 {
	69	+	var r [][2]int32
	70	+	for _, p := range ps {
	71	+	r = append(r, p.pos[len(p.pos)-1])
	72	+	}
	73	+	slices.SortFunc(r, func(a, b [2]int32) int { return int(a[0] - b[0]) })
	74	+	return r
	75	+	}
	76	+
	77	+	func twoOutputs(ax int) ports.SetOutputs {
	78	+	mk := func(name string, x int) ports.OutputPlacement {
	79	+	return ports.OutputPlacement{Info: ports.OutputInfo{Name: name, Width: 1920, Height: 1080}, X: x, Y: 0, Width: 1920, Height: 1080, Scale: 1}
	80	+	}
	81	+	return ports.SetOutputs{Outputs: ports.Layout{mk("A", ax), mk("B", 0)}}
	82	+	}
	83	+
	84	+	// Xwayland gets X-space positions (layout top-left is 0,0) and re-receives
	85	+	// them on a layout change; every other client keeps the layout coordinates.
	86	+	func TestXwaylandPrivateXDGOutput(t *testing.T) {
	87	+	r := newX11Rig(t)
	88	+	applyOutputs(t, r.s, r.commands, twoOutputs(-1920))
	89	+	other := protocolClient(t, r.s, r.dir)
	90	+	xo := xdgOutputsOf(t, r.xc)
	91	+	oo := xdgOutputsOf(t, other)
	92	+	if got, want := lastPositions(xo), [][2]int32{{0, 0}, {1920, 0}}; !slices.Equal(got, want) {
	93	+	t.Errorf("Xwayland positions %v, want %v", got, want)
	94	+	}
	95	+	if got, want := lastPositions(oo), [][2]int32{{-1920, 0}, {0, 0}}; !slices.Equal(got, want) {
	96	+	t.Errorf("ordinary positions %v, want %v", got, want)
	97	+	}
	98	+	applyOutputs(t, r.s, r.commands, twoOutputs(-3840))
	99	+	if err := r.xc.Roundtrip(); err != nil {
	100	+	t.Fatal(err)
	101	+	}
	102	+	if err := other.Roundtrip(); err != nil {
	103	+	t.Fatal(err)
	104	+	}
	105	+	if got, want := lastPositions(xo), [][2]int32{{0, 0}, {3840, 0}}; !slices.Equal(got, want) {
	106	+	t.Errorf("Xwayland positions after change %v, want %v", got, want)
	107	+	}
	108	+	if got, want := lastPositions(oo), [][2]int32{{-3840, 0}, {0, 0}}; !slices.Equal(got, want) {
	109	+	t.Errorf("ordinary positions after change %v, want %v", got, want)
	110	+	}
	111	+	// Hotplug: a third output on the right grows the extents.
	112	+	third := twoOutputs(-3840)
	113	+	third.Outputs = append(third.Outputs, ports.OutputPlacement{Info: ports.OutputInfo{Name: "C", Width: 1920, Height: 1080}, X: 1920, Width: 1920, Height: 1080, Scale: 1})
	114	+	applyOutputs(t, r.s, r.commands, third)
	115	+	if err := r.xc.Roundtrip(); err != nil {
	116	+	t.Fatal(err)
	117	+	}
	118	+	if got := lastPositions(xo); len(got) != 2 \|\| got[1] != [2]int32{3840, 0} {
	119	+	t.Errorf("Xwayland positions after hotplug %v", got)
	120	+	}
	121	+	}
	122	+
	123	+	func TestGlobalFilterAllocations(t *testing.T) {
	124	+	if raceEnabled {
	125	+	t.Skip("the race detector allocates in the background")
	126	+	}
	127	+	s := &Server{xdgPublic: &server.Global{}, xdgPrivate: &server.Global{}}
	128	+	if allocs := testing.AllocsPerRun(100, func() {
	129	+	s.globalVisible(server.Client{}, s.xdgPrivate)
	130	+	s.globalVisible(server.Client{}, s.xdgPublic)
	131	+	}); allocs != 0 {
	132	+	t.Errorf("globalVisible: %.1f allocs, want 0", allocs)
	133	+	}
	134	+	}
	135	+
	136	+	// The X origin is derived by one Space, kept without a window manager.
	137	+	func TestXSpaceFollowsLayoutWithoutXWM(t *testing.T) {
	138	+	r := newX11Rig(t)
	139	+	applyOutputs(t, r.s, r.commands, twoOutputs(-1920))
	140	+	if ox, oy := r.s.xspace.Origin(); ox != -1920 \|\| oy != 0 {
	141	+	t.Fatalf("origin %d,%d, want -1920,0", ox, oy)
	142	+	}
	143	+	}

A internal/adapters/wayland/xwayland.go +75 -0

@@ -0,0 +1,75 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"context"
	5	+
	6	+	"github.com/bnema/neferwl/internal/adapters/logging"
	7	+	"github.com/bnema/neferwl/internal/adapters/wayland/xwm"
	8	+	"github.com/bnema/purego-libwayland/server"
	9	+	"golang.org/x/sys/unix"
	10	+	)
	11	+
	12	+	// xwaylandClient belongs to the display goroutine.
	13	+	type xwaylandClient struct {
	14	+	client server.Client
	15	+	}
	16	+
	17	+	// AttachXwayland transfers ownership of the Wayland descriptor to the display.
	18	+	// It may be called from any goroutine.
	19	+	func (s *Server) AttachXwayland(wlFD int) {
	20	+	ran := s.display.Do(func() {
	21	+	c, err := s.display.CreateClient(wlFD)
	22	+	if err != nil {
	23	+	s.log.Warn().Err(err).Msg("Xwayland connection not adopted")
	24	+	_ = unix.Close(wlFD) // CreateClient only adopts on success.
	25	+	return
	26	+	}
	27	+	s.forgetXwayland()
	28	+	s.xwayland = xwaylandClient{client: c}
	29	+	c.OnDestroy(func() {
	30	+	if s.xwayland.client == c {
	31	+	s.teardownXWM()
	32	+	s.forgetXwayland()
	33	+	}
	34	+	})
	35	+	s.log.Info().Msg("Xwayland attached")
	36	+	})
	37	+	if !ran {
	38	+	_ = unix.Close(wlFD)
	39	+	}
	40	+	}
	41	+
	42	+	// forgetXwayland runs on the display owner, or after Run has joined it.
	43	+	func (s *Server) forgetXwayland() {
	44	+	if s.xwayland.client != (server.Client{}) {
	45	+	s.xwayland = xwaylandClient{}
	46	+	}
	47	+	}
	48	+
	49	+	// AttachXWM bootstraps the X11 window manager on the window manager
	50	+	// descriptor, which it owns. It runs on the starter goroutine once Xwayland is
	51	+	// ready and blocks until the XWM is installed, ctx ends or Boot fails. stop
	52	+	// closes the XWM on the display goroutine and waits for it.
	53	+	func (s *Server) AttachXWM(ctx context.Context, wmFD int) (stop func()) {
	54	+	log := logging.For(ctx, "xwm")
	55	+	x, err := xwm.Boot(ctx, wmFD, log)
	56	+	if err != nil {
	57	+	if ctx.Err() != nil {
	58	+	log.Info().Err(err).Msg("X11 window management not started: Xwayland is going away")
	59	+	} else {
	60	+	log.Warn().Err(err).Msg("X11 window management disabled")
	61	+	}
	62	+	return func() {}
	63	+	}
	64	+	if !s.display.Do(func() { s.installXWM(x) }) {
	65	+	x.CloseConn()
	66	+	return func() {}
	67	+	}
	68	+	return func() {
	69	+	s.display.Do(func() {
	70	+	if s.xwm == x {
	71	+	s.teardownXWM()
	72	+	}
	73	+	})
	74	+	}
	75	+	}

A internal/adapters/wayland/xwayland_test.go +84 -0

@@ -0,0 +1,84 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"errors"
	5	+	"testing"
	6	+
	7	+	"github.com/bnema/purego-libwayland/server"
	8	+	"golang.org/x/sys/unix"
	9	+	)
	10	+
	11	+	func xwaylandPair(t testing.T) [2]int {
	12	+	t.Helper()
	13	+	p, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM\|unix.SOCK_CLOEXEC, 0)
	14	+	if err != nil {
	15	+	t.Fatal(err)
	16	+	}
	17	+	t.Cleanup(func() {
	18	+	if p[1] >= 0 {
	19	+	unix.Close(p[1])
	20	+	}
	21	+	})
	22	+	return &p
	23	+	}
	24	+
	25	+	func assertFDClosed(t *testing.T, fd int) {
	26	+	t.Helper()
	27	+	if _, err := unix.FcntlInt(uintptr(fd), unix.F_GETFD, 0); !errors.Is(err, unix.EBADF) {
	28	+	t.Fatalf("fd %d still open: %v", fd, err)
	29	+	}
	30	+	}
	31	+
	32	+	func TestAttachXwaylandLifecycle(t *testing.T) {
	33	+	h := newAdmissionHarness(t, 1)
	34	+	wl := xwaylandPair(t)
	35	+	h.s.AttachXwayland(wl[0])
	36	+	var first server.Client
	37	+	h.s.display.Do(func() { first = h.s.xwayland.client })
	38	+	if first == (server.Client{}) {
	39	+	t.Fatal("client not recorded")
	40	+	}
	41	+	wl2 := xwaylandPair(t)
	42	+	h.s.AttachXwayland(wl2[0])
	43	+	unix.Close(wl[1])
	44	+	wl[1] = -1 // Old client's destroy must not clear the new record.
	45	+	waitTrue(t, "old client destroyed", func() bool {
	46	+	_, err := unix.FcntlInt(uintptr(wl[0]), unix.F_GETFD, 0)
	47	+	return errors.Is(err, unix.EBADF)
	48	+	})
	49	+	h.s.display.Do(func() {
	50	+	if h.s.xwayland.client == (server.Client{}) \|\| h.s.xwayland.client == first {
	51	+	t.Error("replacement lost")
	52	+	}
	53	+	})
	54	+	unix.Close(wl2[1])
	55	+	wl2[1] = -1
	56	+	waitTrue(t, "Xwayland disconnected", func() bool {
	57	+	clear := false
	58	+	h.s.display.Do(func() { clear = h.s.xwayland.client == (server.Client{}) })
	59	+	return clear
	60	+	})
	61	+	}
	62	+
	63	+	func TestAttachXwaylandFailureClosesFDs(t *testing.T) {
	64	+	h := newAdmissionHarness(t, 1)
	65	+	var p [2]int
	66	+	if err := unix.Pipe2(p[:], unix.O_CLOEXEC); err != nil {
	67	+	t.Fatal(err)
	68	+	}
	69	+	defer unix.Close(p[1])
	70	+	h.s.AttachXwayland(p[0])
	71	+	assertFDClosed(t, p[0])
	72	+	}
	73	+
	74	+	func TestAttachXwaylandStopped(t *testing.T) {
	75	+	d, err := server.NewDisplay()
	76	+	if err != nil {
	77	+	t.Fatal(err)
	78	+	}
	79	+	d.Close()
	80	+	s := &Server{display: d}
	81	+	wl := xwaylandPair(t)
	82	+	s.AttachXwayland(wl[0])
	83	+	assertFDClosed(t, wl[0])
	84	+	}

A internal/adapters/wayland/xwm/atoms.go +96 -0

@@ -0,0 +1,96 @@
	1	+	package xwm
	2	+
	3	+	// Atoms interned at boot in one round trip, in this fixed order. The table
	4	+	// includes the clipboard and selection atoms.
	5	+	const (
	6	+	atomWMProtocols = iota
	7	+	atomWMDeleteWindow
	8	+	atomWMTakeFocus
	9	+	atomWMState
	10	+	atomWMChangeState
	11	+	atomWMS0
	12	+	atomUTF8String
	13	+	atomNetWMCMS0
	14	+	atomNetSupported
	15	+	atomNetSupportingWMCheck
	16	+	atomNetWMName
	17	+	atomNetWMPID
	18	+	atomNetWMWindowType
	19	+	atomNetWMWindowTypeNormal
	20	+	atomNetWMWindowTypeDialog
	21	+	atomNetWMWindowTypeUtility
	22	+	atomNetWMWindowTypeSplash
	23	+	atomNetWMWindowTypeToolbar
	24	+	atomNetWMWindowTypeMenu
	25	+	atomNetWMWindowTypeDropdownMenu
	26	+	atomNetWMWindowTypePopupMenu
	27	+	atomNetWMWindowTypeTooltip
	28	+	atomNetWMWindowTypeNotification
	29	+	atomNetWMWindowTypeCombo
	30	+	atomNetWMWindowTypeDND
	31	+	atomNetWMState
	32	+	atomNetWMStateModal
	33	+	atomNetWMStateFullscreen
	34	+	atomNetWMStateFocused
	35	+	atomNetWMStateMaximizedVert
	36	+	atomNetWMStateMaximizedHorz
	37	+	atomNetActiveWindow
	38	+	atomNetClientList
	39	+	atomNetClientListStacking
	40	+	atomNetWMMoveresize
	41	+	atomNetWMBypassCompositor
	42	+	atomWLSurfaceID
	43	+	atomWLSurfaceSerial
	44	+	atomNetWMIcon
	45	+	atomMotifWMHints
	46	+	atomClipboard
	47	+	atomPrimary
	48	+	atomTargets
	49	+	atomCount
	50	+	)
	51	+
	52	+	var atomNames = [atomCount]string{
	53	+	atomWMProtocols: "WM_PROTOCOLS",
	54	+	atomWMDeleteWindow: "WM_DELETE_WINDOW",
	55	+	atomWMTakeFocus: "WM_TAKE_FOCUS",
	56	+	atomWMState: "WM_STATE",
	57	+	atomWMChangeState: "WM_CHANGE_STATE",
	58	+	atomWMS0: "WM_S0",
	59	+	atomUTF8String: "UTF8_STRING",
	60	+	atomNetWMCMS0: "_NET_WM_CM_S0",
	61	+	atomNetSupported: "_NET_SUPPORTED",
	62	+	atomNetSupportingWMCheck: "_NET_SUPPORTING_WM_CHECK",
	63	+	atomNetWMName: "_NET_WM_NAME",
	64	+	atomNetWMPID: "_NET_WM_PID",
	65	+	atomNetWMWindowType: "_NET_WM_WINDOW_TYPE",
	66	+	atomNetWMWindowTypeNormal: "_NET_WM_WINDOW_TYPE_NORMAL",
	67	+	atomNetWMWindowTypeDialog: "_NET_WM_WINDOW_TYPE_DIALOG",
	68	+	atomNetWMWindowTypeUtility: "_NET_WM_WINDOW_TYPE_UTILITY",
	69	+	atomNetWMWindowTypeSplash: "_NET_WM_WINDOW_TYPE_SPLASH",
	70	+	atomNetWMWindowTypeToolbar: "_NET_WM_WINDOW_TYPE_TOOLBAR",
	71	+	atomNetWMWindowTypeMenu: "_NET_WM_WINDOW_TYPE_MENU",
	72	+	atomNetWMWindowTypeDropdownMenu: "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU",
	73	+	atomNetWMWindowTypePopupMenu: "_NET_WM_WINDOW_TYPE_POPUP_MENU",
	74	+	atomNetWMWindowTypeTooltip: "_NET_WM_WINDOW_TYPE_TOOLTIP",
	75	+	atomNetWMWindowTypeNotification: "_NET_WM_WINDOW_TYPE_NOTIFICATION",
	76	+	atomNetWMWindowTypeCombo: "_NET_WM_WINDOW_TYPE_COMBO",
	77	+	atomNetWMWindowTypeDND: "_NET_WM_WINDOW_TYPE_DND",
	78	+	atomNetWMState: "_NET_WM_STATE",
	79	+	atomNetWMStateModal: "_NET_WM_STATE_MODAL",
	80	+	atomNetWMStateFullscreen: "_NET_WM_STATE_FULLSCREEN",
	81	+	atomNetWMStateFocused: "_NET_WM_STATE_FOCUSED",
	82	+	atomNetWMStateMaximizedVert: "_NET_WM_STATE_MAXIMIZED_VERT",
	83	+	atomNetWMStateMaximizedHorz: "_NET_WM_STATE_MAXIMIZED_HORZ",
	84	+	atomNetActiveWindow: "_NET_ACTIVE_WINDOW",
	85	+	atomNetClientList: "_NET_CLIENT_LIST",
	86	+	atomNetClientListStacking: "_NET_CLIENT_LIST_STACKING",
	87	+	atomNetWMMoveresize: "_NET_WM_MOVERESIZE",
	88	+	atomNetWMBypassCompositor: "_NET_WM_BYPASS_COMPOSITOR",
	89	+	atomWLSurfaceID: "WL_SURFACE_ID",
	90	+	atomWLSurfaceSerial: "WL_SURFACE_SERIAL",
	91	+	atomNetWMIcon: "_NET_WM_ICON",
	92	+	atomMotifWMHints: "_MOTIF_WM_HINTS",
	93	+	atomClipboard: "CLIPBOARD",
	94	+	atomPrimary: "PRIMARY",
	95	+	atomTargets: "TARGETS",
	96	+	}

A internal/adapters/wayland/xwm/configure.go +317 -0

@@ -0,0 +1,317 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"math"
	5	+
	6	+	"bnema.dev/xturbo"
	7	+	"bnema.dev/xturbo/xproto"
	8	+	"github.com/bnema/neferwl/internal/ports"
	9	+	)
	10	+
	11	+	// maxClientSize bounds the size a floating window may ask for.
	12	+	const maxClientSize = 16384
	13	+
	14	+	// _NET_WM_STATE bits tracked in record.stateSent.
	15	+	const (
	16	+	stateFullscreen uint8 = 1 << iota
	17	+	stateFocused
	18	+	)
	19	+
	20	+	// size is the size to send: the requested one, else the last known.
	21	+	func (r *record) size() (w, h uint32) {
	22	+	w, h = r.pend.w, r.pend.h
	23	+	if w == 0 {
	24	+	w = r.w
	25	+	}
	26	+	if h == 0 {
	27	+	h = r.h
	28	+	}
	29	+	return w, h
	30	+	}
	31	+
	32	+	// differs reports whether the pending configure is not what the X server has.
	33	+	func (r *record) differs() bool {
	34	+	w, h := r.size()
	35	+	p, s := &r.pend, &r.sent
	36	+	return p.x != s.x \|\| p.y != s.y \|\| w != s.w \|\| h != s.h \|\|
	37	+	p.fullscreen != s.fullscreen \|\| p.activated != s.activated
	38	+	}
	39	+
	40	+	// markDirty queues s for the next flush when its pending configure differs.
	41	+	func (x XWM) markDirty(s Slot, r record) {
	42	+	if r.pend.dirty \|\| !r.differs() {
	43	+	return
	44	+	}
	45	+	if len(x.dirty) == cap(x.dirty) {
	46	+	// Stale entries of freed and reused slots filled the queue: send
	47	+	// what is queued rather than grow it. r stays valid, nothing here
	48	+	// grows the table.
	49	+	x.flushConfigures()
	50	+	}
	51	+	r.pend.dirty = true
	52	+	x.dirty = append(x.dirty, s)
	53	+	}
	54	+
	55	+	// managedRec returns the record of a live managed window.
	56	+	func (x XWM) managedRec(s Slot) record {
	57	+	if x.closed {
	58	+	return nil
	59	+	}
	60	+	if r := x.tab.rec(s); r != nil && r.kind == kindManaged {
	61	+	return r
	62	+	}
	63	+	return nil
	64	+	}
	65	+
	66	+	// Configure records the size and state core wants for s; sent at flush. A
	67	+	// zero size keeps the current one.
	68	+	func (x *XWM) Configure(s Slot, c ports.ConfigureWindow) {
	69	+	r := x.managedRec(s)
	70	+	if r == nil {
	71	+	return
	72	+	}
	73	+	if c.Width > 0 {
	74	+	r.pend.w = uint32(min(c.Width, maxClientSize))
	75	+	}
	76	+	if c.Height > 0 {
	77	+	r.pend.h = uint32(min(c.Height, maxClientSize))
	78	+	}
	79	+	r.pend.fullscreen, r.pend.activated = c.Fullscreen, c.Activated
	80	+	x.markDirty(s, r)
	81	+	x.wake()
	82	+	}
	83	+
	84	+	// Place records the layout position of the client rectangle of s.
	85	+	func (x *XWM) Place(s Slot, px, py int) {
	86	+	r := x.managedRec(s)
	87	+	if r == nil {
	88	+	return
	89	+	}
	90	+	r.lx, r.ly, r.placed = int32(px), int32(py), true
	91	+	r.pend.x, r.pend.y = x.toX(r)
	92	+	x.markDirty(s, r)
	93	+	x.wake()
	94	+	}
	95	+
	96	+	// toX converts the layout position of r to X coordinates.
	97	+	func (x XWM) toX(r record) (px, py int32) {
	98	+	ix, iy := x.space.ToX(int(r.lx), int(r.ly))
	99	+	return int32(ix), int32(iy)
	100	+	}
	101	+
	102	+	// SetLayout installs the output layout that X coordinates derive from. When it
	103	+	// changes, placed managed windows are repositioned and mapped override windows
	104	+	// are re-reported in layout coordinates. Display goroutine only.
	105	+	func (x *XWM) SetLayout(l ports.Layout) {
	106	+	if x.closed {
	107	+	return
	108	+	}
	109	+	x.LayoutChanged(x.space.Set(l))
	110	+	}
	111	+
	112	+	// UseSpace makes sp the coordinate mapping, owned by the host, which calls
	113	+	// Set on it and then LayoutChanged. Call before Attach.
	114	+	func (x XWM) UseSpace(sp Space) { x.space = sp }
	115	+
	116	+	// LayoutChanged repositions windows after the shared Space was set; changed
	117	+	// is Set's result. Display goroutine only.
	118	+	func (x *XWM) LayoutChanged(changed bool) {
	119	+	if x.closed {
	120	+	return
	121	+	}
	122	+	if n := x.space.Dropped(); n > 0 && !x.warnedSpace {
	123	+	x.warnedSpace = true
	124	+	x.log.Warn().Int("dropped", n).Int("max", maxRegions).Msg("more outputs than the X11 layout holds, extra outputs ignored")
	125	+	}
	126	+	if !changed {
	127	+	return
	128	+	}
	129	+	for i := range x.tab.recs {
	130	+	r, s := &x.tab.recs[i], Slot(i+1)
	131	+	switch {
	132	+	case r.kind == kindManaged && r.placed:
	133	+	r.pend.x, r.pend.y = x.toX(r)
	134	+	x.markDirty(s, r)
	135	+	case r.kind == kindUnmanaged && r.ovPaired:
	136	+	x.queueOverride(s, r)
	137	+	}
	138	+	}
	139	+	x.wake()
	140	+	}
	141	+
	142	+	// flushConfigures sends the pending configures, once per display iteration,
	143	+	// then what focus left to do.
	144	+	func (x *XWM) flushConfigures() {
	145	+	for _, s := range x.dirty {
	146	+	if r := x.tab.rec(s); r != nil && r.kind == kindManaged && r.pend.dirty {
	147	+	x.sendPending(s, r)
	148	+	}
	149	+	}
	150	+	x.dirty = x.dirty[:0]
	151	+	x.flushOverrides()
	152	+	x.flushFocus()
	153	+	}
	154	+
	155	+	// sendPending writes the geometry (with the synthetic ConfigureNotify ICCCM
	156	+	// 4.1.5 asks for, since Xwayland may not move the window) and the
	157	+	// _NET_WM_STATE bits that changed.
	158	+	func (x XWM) sendPending(s Slot, r record) {
	159	+	r.pend.dirty = false
	160	+	p := &r.pend
	161	+	w, h := r.size()
	162	+	if w > 0 && h > 0 && (p.x != r.sent.x \|\| p.y != r.sent.y \|\| w != r.sent.w \|\| h != r.sent.h) {
	163	+	var v xproto.ConfigureWindowValues
	164	+	v.SetX(p.x).SetY(p.y).SetWidth(w).SetHeight(h).SetBorderWidth(0)
	165	+	x.expect(xproto.ConfigureWindow(x.conn.Buf(), xproto.Window(r.xid), &v), kindConfigure, x.tab.tag(s), 0)
	166	+	r.x, r.y, r.w, r.h = p.x, p.y, w, h
	167	+	x.sendConfigureNotify(r)
	168	+	r.sent.x, r.sent.y, r.sent.w, r.sent.h = p.x, p.y, w, h
	169	+	}
	170	+	var bits uint8
	171	+	if p.fullscreen {
	172	+	bits \|= stateFullscreen
	173	+	}
	174	+	if p.activated {
	175	+	bits \|= stateFocused
	176	+	}
	177	+	r.sent.fullscreen, r.sent.activated = p.fullscreen, p.activated
	178	+	r.fullscreen = p.fullscreen // ours now: the property is not read back
	179	+	if bits != r.stateSent {
	180	+	r.stateSent = bits
	181	+	x.writeState(r)
	182	+	}
	183	+	}
	184	+
	185	+	// writeState rewrites _NET_WM_STATE of r from its bits.
	186	+	func (x XWM) writeState(r record) {
	187	+	var list [3]uint32
	188	+	n := 0
	189	+	if r.modal {
	190	+	list[n] = x.atoms[atomNetWMStateModal]
	191	+	n++
	192	+	}
	193	+	if r.stateSent&stateFullscreen != 0 {
	194	+	list[n] = x.atoms[atomNetWMStateFullscreen]
	195	+	n++
	196	+	}
	197	+	if r.stateSent&stateFocused != 0 {
	198	+	list[n] = x.atoms[atomNetWMStateFocused]
	199	+	n++
	200	+	}
	201	+	x.setProp32(r.xid, atomNetWMState, xproto.AtomAtom, list[:n])
	202	+	}
	203	+
	204	+	// sendConfigureNotify tells the client its geometry as the XWM sees it.
	205	+	func (x XWM) sendConfigureNotify(r record) {
	206	+	var raw [32]byte
	207	+	d := xproto.ConfigureNotifyEventData{
	208	+	Event: xproto.Window(r.xid), Window: xproto.Window(r.xid),
	209	+	X: int16(min(max(r.x, math.MinInt16), math.MaxInt16)), Y: int16(min(max(r.y, math.MinInt16), math.MaxInt16)),
	210	+	Width: uint16(min(r.w, math.MaxUint16)), Height: uint16(min(r.h, math.MaxUint16)),
	211	+	}
	212	+	d.Put(&raw)
	213	+	xproto.SendEvent(x.conn.Buf(), false, xproto.Window(r.xid), xproto.EventMaskStructureNotify, &raw)
	214	+	}
	215	+
	216	+	// onConfigureRequest answers a client resizing itself. Tiled windows are told
	217	+	// their current geometry; floating ones get the size they ask for; unmanaged
	218	+	// and unknown windows are configured as requested.
	219	+	func (x XWM) onConfigureRequest(ev xturbo.Event) {
	220	+	e := xproto.ConfigureRequestOf(ev)
	221	+	xid := uint32(e.Window())
	222	+	mask := e.ValueMask()
	223	+	s := x.tab.lookup(xid)
	224	+	r := x.managedRec(s)
	225	+	if r == nil {
	226	+	var v xproto.ConfigureWindowValues
	227	+	if mask&xproto.ConfigWindowX != 0 {
	228	+	v.SetX(int32(e.X()))
	229	+	}
	230	+	if mask&xproto.ConfigWindowY != 0 {
	231	+	v.SetY(int32(e.Y()))
	232	+	}
	233	+	if mask&xproto.ConfigWindowWidth != 0 {
	234	+	v.SetWidth(uint32(e.Width()))
	235	+	}
	236	+	if mask&xproto.ConfigWindowHeight != 0 {
	237	+	v.SetHeight(uint32(e.Height()))
	238	+	}
	239	+	if mask&xproto.ConfigWindowBorderWidth != 0 {
	240	+	v.SetBorderWidth(uint32(e.BorderWidth()))
	241	+	}
	242	+	if mask&xproto.ConfigWindowSibling != 0 {
	243	+	v.SetSibling(e.Sibling())
	244	+	}
	245	+	if mask&xproto.ConfigWindowStackMode != 0 {
	246	+	v.SetStackMode(e.StackMode())
	247	+	}
	248	+	xproto.ConfigureWindow(x.conn.Buf(), xproto.Window(xid), &v)
	249	+	return
	250	+	}
	251	+	if !r.ready {
	252	+	x.configureBeforeReady(s, r, e)
	253	+	return
	254	+	}
	255	+	if r.floating && mask&(xproto.ConfigWindowWidth\|xproto.ConfigWindowHeight) != 0 {
	256	+	w, h := r.w, r.h
	257	+	if mask&xproto.ConfigWindowWidth != 0 {
	258	+	w = uint32(min(max(int(e.Width()), 1), maxClientSize))
	259	+	}
	260	+	if mask&xproto.ConfigWindowHeight != 0 {
	261	+	h = uint32(min(max(int(e.Height()), 1), maxClientSize))
	262	+	}
	263	+	if w > 0 && h > 0 {
	264	+	var v xproto.ConfigureWindowValues
	265	+	v.SetWidth(w).SetHeight(h)
	266	+	x.expect(xproto.ConfigureWindow(x.conn.Buf(), xproto.Window(xid), &v), kindConfigure, x.tab.tag(s), 0)
	267	+	r.w, r.h = w, h
	268	+	// The size is the client's own: core learns it from the commit
	269	+	// and Configure only resends it when core wants another.
	270	+	r.pend.w, r.pend.h = w, h
	271	+	r.sent.w, r.sent.h = w, h
	272	+	}
	273	+	}
	274	+	x.sendConfigureNotify(r)
	275	+	}
	276	+
	277	+	// configureBeforeReady honours the geometry a window asks for before it is
	278	+	// ready (XMoveResize before XMapWindow), floating or not: core only sees the
	279	+	// window at Ready and the client must find the geometry it set.
	280	+	func (x XWM) configureBeforeReady(s Slot, r record, e xproto.ConfigureRequestEvent) {
	281	+	mask := e.ValueMask()
	282	+	var v xproto.ConfigureWindowValues
	283	+	if mask&xproto.ConfigWindowX != 0 {
	284	+	r.x = int32(e.X())
	285	+	v.SetX(r.x)
	286	+	}
	287	+	if mask&xproto.ConfigWindowY != 0 {
	288	+	r.y = int32(e.Y())
	289	+	v.SetY(r.y)
	290	+	}
	291	+	if mask&xproto.ConfigWindowWidth != 0 {
	292	+	r.w, r.sized = uint32(min(max(int(e.Width()), 1), maxClientSize)), true
	293	+	v.SetWidth(r.w)
	294	+	}
	295	+	if mask&xproto.ConfigWindowHeight != 0 {
	296	+	r.h, r.sized = uint32(min(max(int(e.Height()), 1), maxClientSize)), true
	297	+	v.SetHeight(r.h)
	298	+	}
	299	+	if mask&(xproto.ConfigWindowX\|xproto.ConfigWindowY\|xproto.ConfigWindowWidth\|xproto.ConfigWindowHeight) != 0 {
	300	+	x.expect(xproto.ConfigureWindow(x.conn.Buf(), xproto.Window(r.xid), &v), kindConfigure, x.tab.tag(s), 0)
	301	+	}
	302	+	x.sendConfigureNotify(r)
	303	+	}
	304	+
	305	+	// onConfigureNotify keeps the known geometry of every top-level window.
	306	+	func (x XWM) onConfigureNotify(ev xturbo.Event) {
	307	+	e := xproto.ConfigureNotifyOf(ev)
	308	+	if e.Event() != xproto.Window(x.root) {
	309	+	return
	310	+	}
	311	+	if r := x.tab.rec(x.tab.lookup(uint32(e.Window()))); r != nil && r.kind != kindFree {
	312	+	r.x, r.y, r.w, r.h = int32(e.X()), int32(e.Y()), uint32(e.Width()), uint32(e.Height())
	313	+	if r.kind == kindUnmanaged && r.ovPaired {
	314	+	x.queueOverride(x.tab.lookup(r.xid), r)
	315	+	}
	316	+	}
	317	+	}

A internal/adapters/wayland/xwm/configure_test.go +565 -0

@@ -0,0 +1,565 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"testing"
	6	+
	7	+	"bnema.dev/xturbo/xproto"
	8	+	"github.com/bnema/neferwl/internal/ports"
	9	+	"github.com/stretchr/testify/mock"
	10	+	"github.com/stretchr/testify/require"
	11	+	)
	12	+
	13	+	// newWin makes a ready managed window known to the XWM and the mocked host.
	14	+	func newWin(t testing.T, x XWM, p xpeer, h mockhost, xid uint32) Slot {
	15	+	t.Helper()
	16	+	h.EXPECT().Created(mock.Anything, xid).Return(ports.WindowID(xid)).Once()
	17	+	p.createNotify(xid, false)
	18	+	readUntil(t, x, func() bool { return x.tab.lookup(xid) != 0 })
	19	+	s := x.tab.lookup(xid)
	20	+	r := x.tab.rec(s)
	21	+	r.ready, r.w, r.h = true, 300, 200
	22	+	return s
	23	+	}
	24	+
	25	+	// settle flushes the XWM and waits until the peer has seen everything sent so
	26	+	// far; it returns the number of requests received.
	27	+	func settle(t testing.T, x XWM, p *xpeer) int {
	28	+	t.Helper()
	29	+	x.flush()
	30	+	n := len(p.requests())
	31	+	xproto.GetInputFocus(x.conn.Buf())
	32	+	require.NoError(t, x.conn.Flush())
	33	+	_, n = p.waitReq(n, func(r xpeerReq) bool { return r.major == opGetInputFocus })
	34	+	return n
	35	+	}
	36	+
	37	+	// since returns the requests of the given major opcode received after skip.
	38	+	func since(p *xpeer, skip int, major uint8) []xpeerReq {
	39	+	var out []xpeerReq
	40	+	for _, r := range p.requests()[skip:] {
	41	+	if r.major == major {
	42	+	out = append(out, r)
	43	+	}
	44	+	}
	45	+	return out
	46	+	}
	47	+
	48	+	// sentEvents returns the 32-byte events of the SendEvent requests to dest.
	49	+	func sentEvents(p *xpeer, skip int, dest uint32) [][]byte {
	50	+	var out [][]byte
	51	+	for _, r := range since(p, skip, opSendEvent) {
	52	+	if r.u32(4) == dest {
	53	+	out = append(out, r.raw[12:44])
	54	+	}
	55	+	}
	56	+	return out
	57	+	}
	58	+
	59	+	func propsTo(p *xpeer, skip int, win uint32, atom string) []xpeerReq {
	60	+	var out []xpeerReq
	61	+	a := p.atom(atom)
	62	+	for _, r := range since(p, skip, opChangeProperty) {
	63	+	if r.u32(4) == win && r.u32(8) == a {
	64	+	out = append(out, r)
	65	+	}
	66	+	}
	67	+	return out
	68	+	}
	69	+
	70	+	func (x XWM) feed(t testing.T, p *xpeer, send func()) {
	71	+	t.Helper()
	72	+	ev := x.stats.Events
	73	+	send()
	74	+	readUntil(t, x, func() bool { return x.stats.Events > ev })
	75	+	}
	76	+
	77	+	func TestConfigureCoalescesIntoOneRequest(t *testing.T) {
	78	+	x, p, h, _, runs := attached(t)
	79	+	const win = 0x500001
	80	+	s := newWin(t, x, p, h, win)
	81	+	n := settle(t, x, p)
	82	+
	83	+	x.Configure(s, ports.ConfigureWindow{Width: 640, Height: 480})
	84	+	x.Configure(s, ports.ConfigureWindow{Width: 800, Height: 600, Activated: true})
	85	+	x.Place(s, 10, 20)
	86	+	require.Len(t, *runs, 1, "one flush posted")
	87	+	n2 := settle(t, x, p)
	88	+
	89	+	cw := since(p, n, opConfigureWindow)
	90	+	require.Len(t, cw, 1)
	91	+	require.Equal(t, uint32(win), cw[0].u32(4))
	92	+	require.EqualValues(t, 0x1f, binary.LittleEndian.Uint16(cw[0].raw[8:]), "x y width height border")
	93	+	require.Equal(t, []uint32{10, 20, 800, 600, 0}, []uint32{cw[0].u32(12), cw[0].u32(16), cw[0].u32(20), cw[0].u32(24), cw[0].u32(28)})
	94	+
	95	+	evs := sentEvents(p, n, win)
	96	+	require.Len(t, evs, 1, "one synthetic ConfigureNotify")
	97	+	require.EqualValues(t, 22, evs[0][0])
	98	+	require.EqualValues(t, win, binary.LittleEndian.Uint32(evs[0][4:]))
	99	+	require.EqualValues(t, win, binary.LittleEndian.Uint32(evs[0][8:]))
	100	+	require.EqualValues(t, 10, binary.LittleEndian.Uint16(evs[0][16:]))
	101	+	require.EqualValues(t, 20, binary.LittleEndian.Uint16(evs[0][18:]))
	102	+	require.EqualValues(t, 800, binary.LittleEndian.Uint16(evs[0][20:]))
	103	+	require.EqualValues(t, 600, binary.LittleEndian.Uint16(evs[0][22:]))
	104	+	require.Equal(t, xproto.EventMaskStructureNotify, xproto.EventMask(since(p, n, opSendEvent)[0].u32(8)))
	105	+
	106	+	// Unchanged: nothing is sent.
	107	+	x.Configure(s, ports.ConfigureWindow{Width: 800, Height: 600, Activated: true})
	108	+	x.Place(s, 10, 20)
	109	+	settle(t, x, p)
	110	+	require.Len(t, since(p, n2, opConfigureWindow), 0)
	111	+	require.Len(t, sentEvents(p, n2, win), 0)
	112	+	}
	113	+
	114	+	func TestConfigureWritesNetWMState(t *testing.T) {
	115	+	x, p, h, _, _ := attached(t)
	116	+	const win = 0x500001
	117	+	s := newWin(t, x, p, h, win)
	118	+	x.tab.rec(s).modal = true
	119	+	n := settle(t, x, p)
	120	+
	121	+	x.Configure(s, ports.ConfigureWindow{Width: 100, Height: 100})
	122	+	settle(t, x, p)
	123	+	require.Empty(t, propsTo(p, n, win, "_NET_WM_STATE"), "no state bit changed")
	124	+
	125	+	x.Configure(s, ports.ConfigureWindow{Width: 100, Height: 100, Fullscreen: true, Activated: true})
	126	+	settle(t, x, p)
	127	+	st, ok := p.prop(win, "_NET_WM_STATE")
	128	+	require.True(t, ok)
	129	+	require.ElementsMatch(t, []uint32{p.atom("_NET_WM_STATE_MODAL"), p.atom("_NET_WM_STATE_FULLSCREEN"), p.atom("_NET_WM_STATE_FOCUSED")}, atomsOf(st))
	130	+
	131	+	x.Configure(s, ports.ConfigureWindow{Width: 100, Height: 100, Activated: true})
	132	+	settle(t, x, p)
	133	+	st, _ = p.prop(win, "_NET_WM_STATE")
	134	+	require.ElementsMatch(t, []uint32{p.atom("_NET_WM_STATE_MODAL"), p.atom("_NET_WM_STATE_FOCUSED")}, atomsOf(st))
	135	+	}
	136	+
	137	+	func TestConfigureBadWindowIsAttributedAndIgnored(t *testing.T) {
	138	+	x, p, h, _, _ := attached(t)
	139	+	const win = 0x500001
	140	+	s := newWin(t, x, p, h, win)
	141	+	n := settle(t, x, p)
	142	+	x.Configure(s, ports.ConfigureWindow{Width: 640, Height: 480})
	143	+	x.flush()
	144	+	cw := []xpeerReq{}
	145	+	r, _ := p.waitReq(n, func(r xpeerReq) bool { return r.major == opConfigureWindow })
	146	+	cw = append(cw, r)
	147	+
	148	+	p.mu.Lock()
	149	+	e := make([]byte, 32)
	150	+	e[1] = xproto.BadWindow
	151	+	binary.LittleEndian.PutUint16(e[2:], cw[0].seq)
	152	+	binary.LittleEndian.PutUint32(e[4:], win)
	153	+	e[10] = opConfigureWindow
	154	+	p.write(e)
	155	+	p.mu.Unlock()
	156	+	readUntil(t, x, func() bool { return x.stats.Errors == 1 })
	157	+	require.Zero(t, x.stats.Unattributed)
	158	+	require.False(t, x.closed)
	159	+	}
	160	+
	161	+	func sendConfigureRequest(p *xpeer, win uint32, mask uint16, x, y int16, w, h uint16) {
	162	+	p.event(23, func(b *[32]byte) {
	163	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	164	+	binary.LittleEndian.PutUint32(b[8:], win)
	165	+	binary.LittleEndian.PutUint16(b[16:], uint16(x))
	166	+	binary.LittleEndian.PutUint16(b[18:], uint16(y))
	167	+	binary.LittleEndian.PutUint16(b[20:], w)
	168	+	binary.LittleEndian.PutUint16(b[22:], h)
	169	+	binary.LittleEndian.PutUint16(b[26:], mask)
	170	+	})
	171	+	}
	172	+
	173	+	func TestConfigureRequestTiledOnlyGetsNotify(t *testing.T) {
	174	+	x, p, h, _, _ := attached(t)
	175	+	const win = 0x500001
	176	+	newWin(t, x, p, h, win)
	177	+	n := settle(t, x, p)
	178	+
	179	+	x.feed(t, p, func() { sendConfigureRequest(p, win, 0xf, 5, 6, 1000, 900) })
	180	+	settle(t, x, p)
	181	+	require.Empty(t, since(p, n, opConfigureWindow), "a tiled window cannot resize itself")
	182	+	evs := sentEvents(p, n, win)
	183	+	require.Len(t, evs, 1)
	184	+	require.EqualValues(t, 22, evs[0][0])
	185	+	require.EqualValues(t, 300, binary.LittleEndian.Uint16(evs[0][20:]), "current geometry")
	186	+	require.EqualValues(t, 200, binary.LittleEndian.Uint16(evs[0][22:]))
	187	+	}
	188	+
	189	+	func TestConfigureRequestFloatingHonoursSize(t *testing.T) {
	190	+	x, p, h, _, _ := attached(t)
	191	+	const win = 0x500001
	192	+	s := newWin(t, x, p, h, win)
	193	+	x.tab.rec(s).floating = true
	194	+	n := settle(t, x, p)
	195	+
	196	+	x.feed(t, p, func() {
	197	+	sendConfigureRequest(p, win, uint16(xproto.ConfigWindowWidth\|xproto.ConfigWindowHeight), 0, 0, 70000&0xffff, 20000)
	198	+	})
	199	+	settle(t, x, p)
	200	+	cw := since(p, n, opConfigureWindow)
	201	+	require.Len(t, cw, 1)
	202	+	require.EqualValues(t, xproto.ConfigWindowWidth\|xproto.ConfigWindowHeight, binary.LittleEndian.Uint16(cw[0].raw[8:]))
	203	+	require.EqualValues(t, 4464, cw[0].u32(12))
	204	+	require.EqualValues(t, maxClientSize, cw[0].u32(16), "clamped")
	205	+	require.Len(t, sentEvents(p, n, win), 1)
	206	+	}
	207	+
	208	+	func TestConfigureRequestUnmanagedHonouredVerbatim(t *testing.T) {
	209	+	x, p, _, _, _ := attached(t)
	210	+	const win = 0x500009
	211	+	p.createNotify(win, true)
	212	+	readUntil(t, x, func() bool { return x.tab.lookup(win) != 0 })
	213	+	n := settle(t, x, p)
	214	+
	215	+	x.feed(t, p, func() {
	216	+	sendConfigureRequest(p, win, uint16(xproto.ConfigWindowX\|xproto.ConfigWindowY\|xproto.ConfigWindowWidth), 30, 40, 50, 60)
	217	+	})
	218	+	settle(t, x, p)
	219	+	cw := since(p, n, opConfigureWindow)
	220	+	require.Len(t, cw, 1)
	221	+	require.EqualValues(t, 7, binary.LittleEndian.Uint16(cw[0].raw[8:]))
	222	+	require.Equal(t, []uint32{30, 40, 50}, []uint32{cw[0].u32(12), cw[0].u32(16), cw[0].u32(20)})
	223	+	require.Empty(t, sentEvents(p, n, win))
	224	+	}
	225	+
	226	+	func TestConfigureStaleAndDuplicateDirtySlots(t *testing.T) {
	227	+	x, p, h, _, _ := attached(t)
	228	+	const a, b = 0x500001, 0x500002
	229	+	s := newWin(t, x, p, h, a)
	230	+	for i := 1; i <= 50; i++ {
	231	+	x.Configure(s, ports.ConfigureWindow{Width: 100 + i, Height: 100})
	232	+	}
	233	+	require.Len(t, x.dirty, 1, "queued once per false→true transition")
	234	+
	235	+	// The window dies with its entry queued; the slot is reused.
	236	+	h.EXPECT().Dissociate(s, true).Once()
	237	+	p.destroyNotify(a)
	238	+	readUntil(t, x, func() bool { return x.tab.lookup(a) == 0 })
	239	+	s2 := newWin(t, x, p, h, b)
	240	+	require.Equal(t, s, s2, "LIFO slot reuse")
	241	+	n := len(p.requests())
	242	+	x.Configure(s2, ports.ConfigureWindow{Width: 640, Height: 480})
	243	+	require.Len(t, x.dirty, 1)
	244	+	x.dirty = append(x.dirty, s, s) // stale and duplicate entries must be skipped
	245	+	settle(t, x, p)
	246	+	cw := since(p, n, opConfigureWindow)
	247	+	require.Len(t, cw, 1, "sent once despite duplicates")
	248	+	require.Equal(t, uint32(b), cw[0].u32(4))
	249	+	require.Empty(t, x.dirty)
	250	+	require.LessOrEqual(t, cap(x.dirty), len(x.tab.recs))
	251	+	}
	252	+
	253	+	func TestDirtyQueueNeverGrows(t *testing.T) {
	254	+	x, p, h, _, _ := attached(t)
	255	+	c0 := cap(x.dirty)
	256	+	const base = 0x600000
	257	+	for i := 0; i < 3*c0; i++ { // each round leaves a stale entry behind
	258	+	xid := uint32(base + i)
	259	+	h.EXPECT().Created(mock.Anything, xid).Return(ports.WindowID(1)).Once()
	260	+	p.createNotify(xid, false)
	261	+	readUntil(t, x, func() bool { return x.tab.lookup(xid) != 0 })
	262	+	s := x.tab.lookup(xid)
	263	+	x.tab.rec(s).ready = true
	264	+	x.Configure(s, ports.ConfigureWindow{Width: 10, Height: 10})
	265	+	h.EXPECT().Dissociate(s, true).Once()
	266	+	p.destroyNotify(xid)
	267	+	readUntil(t, x, func() bool { return x.tab.lookup(xid) == 0 })
	268	+	}
	269	+	require.Equal(t, c0, cap(x.dirty))
	270	+	require.LessOrEqual(t, len(x.dirty), c0)
	271	+	}
	272	+
	273	+	func TestPublicCommandsIgnoredWhenClosed(t *testing.T) {
	274	+	x, p, h, src, _ := attached(t)
	275	+	const win = 0x500001
	276	+	s := newWin(t, x, p, h, win)
	277	+	h.EXPECT().Dissociate(s, true).Once()
	278	+	src.EXPECT().Remove().Once()
	279	+	x.Close()
	280	+	require.NotPanics(t, func() {
	281	+	x.Configure(s, ports.ConfigureWindow{Width: 1, Height: 1})
	282	+	x.Place(s, 1, 2)
	283	+	x.Focus(s)
	284	+	x.CloseWindow(s)
	285	+	})
	286	+	require.Empty(t, x.dirty)
	287	+	require.Zero(t, x.active)
	288	+	}
	289	+
	290	+	// Focus.
	291	+
	292	+	type focusModel struct {
	293	+	name string
	294	+	input, take bool
	295	+	setFocus bool // SetInputFocus on the window
	296	+	takeFocus bool // WM_TAKE_FOCUS sent
	297	+	}
	298	+
	299	+	func TestFocusInputModels(t *testing.T) {
	300	+	for _, m := range []focusModel{
	301	+	{"passive", true, false, true, false},
	302	+	{"locally active", true, true, true, true},
	303	+	{"globally active", false, true, false, true},
	304	+	{"no input", false, false, false, false},
	305	+	} {
	306	+	t.Run(m.name, func(t *testing.T) {
	307	+	x, p, h, _, _ := attached(t)
	308	+	const win = 0x500001
	309	+	s := newWin(t, x, p, h, win)
	310	+	r := x.tab.rec(s)
	311	+	r.input, r.takeFocus = m.input, m.take
	312	+	n := settle(t, x, p)
	313	+
	314	+	x.Focus(s)
	315	+	settle(t, x, p)
	316	+	var focuses []xpeerReq
	317	+	for _, r := range since(p, n, opSetInputFocus) {
	318	+	if r.u32(4) == win {
	319	+	focuses = append(focuses, r)
	320	+	}
	321	+	}
	322	+	if m.setFocus {
	323	+	require.Len(t, focuses, 1)
	324	+	require.EqualValues(t, xproto.InputFocusNone, focuses[0].raw[1], "never PointerRoot")
	325	+	require.Zero(t, focuses[0].u32(8), "CurrentTime")
	326	+	} else {
	327	+	require.Empty(t, focuses)
	328	+	}
	329	+	var takes int
	330	+	for _, ev := range sentEvents(p, n, win) {
	331	+	if ev[0] == 33 && binary.LittleEndian.Uint32(ev[8:]) == p.atom("WM_PROTOCOLS") {
	332	+	require.EqualValues(t, 32, ev[1])
	333	+	require.Equal(t, p.atom("WM_TAKE_FOCUS"), binary.LittleEndian.Uint32(ev[12:]))
	334	+	require.Zero(t, binary.LittleEndian.Uint32(ev[16:]), "CurrentTime")
	335	+	takes++
	336	+	}
	337	+	}
	338	+	require.Equal(t, map[bool]int{true: 1, false: 0}[m.takeFocus], takes)
	339	+
	340	+	act, ok := p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	341	+	require.True(t, ok)
	342	+	require.Equal(t, []uint32{win}, atomsOf(act), "named even for No-input windows")
	343	+	st, ok := p.prop(win, "_NET_WM_STATE")
	344	+	require.True(t, ok)
	345	+	require.Contains(t, atomsOf(st), p.atom("_NET_WM_STATE_FOCUSED"))
	346	+	})
	347	+	}
	348	+	}
	349	+
	350	+	func TestFocusActiveWindowWrittenOnlyOnChange(t *testing.T) {
	351	+	x, p, h, _, _ := attached(t)
	352	+	const a, b = 0x500001, 0x500002
	353	+	sa, sb := newWin(t, x, p, h, a), newWin(t, x, p, h, b)
	354	+	n := settle(t, x, p)
	355	+
	356	+	x.Focus(sa)
	357	+	x.Focus(sa)
	358	+	settle(t, x, p)
	359	+	require.Len(t, propsTo(p, n, peerRoot, "_NET_ACTIVE_WINDOW"), 1)
	360	+
	361	+	x.Focus(sb)
	362	+	settle(t, x, p)
	363	+	act, _ := p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	364	+	require.Equal(t, []uint32{b}, atomsOf(act))
	365	+	sta, _ := p.prop(a, "_NET_WM_STATE")
	366	+	require.NotContains(t, atomsOf(sta), p.atom("_NET_WM_STATE_FOCUSED"), "old window loses FOCUSED")
	367	+	stb, _ := p.prop(b, "_NET_WM_STATE")
	368	+	require.Contains(t, atomsOf(stb), p.atom("_NET_WM_STATE_FOCUSED"))
	369	+
	370	+	n = settle(t, x, p)
	371	+	x.Focus(0)
	372	+	settle(t, x, p)
	373	+	none := since(p, n, opSetInputFocus)
	374	+	require.Len(t, none, 1)
	375	+	require.Zero(t, none[0].u32(4), "focus None")
	376	+	require.EqualValues(t, xproto.InputFocusNone, none[0].raw[1])
	377	+	act, _ = p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	378	+	require.Equal(t, []uint32{0}, atomsOf(act))
	379	+	stb, _ = p.prop(b, "_NET_WM_STATE")
	380	+	require.NotContains(t, atomsOf(stb), p.atom("_NET_WM_STATE_FOCUSED"))
	381	+	require.Zero(t, x.active)
	382	+	}
	383	+
	384	+	func TestFocusStackingLists(t *testing.T) {
	385	+	x, p, h, _, _ := attached(t)
	386	+	const a, b, c = 0x500001, 0x500002, 0x500003
	387	+	sa := newWin(t, x, p, h, a)
	388	+	newWin(t, x, p, h, b)
	389	+	newWin(t, x, p, h, c)
	390	+	for _, w := range []uint32{a, b, c} {
	391	+	x.addClient(w)
	392	+	}
	393	+	settle(t, x, p)
	394	+	list, _ := p.prop(peerRoot, "_NET_CLIENT_LIST")
	395	+	require.Equal(t, []uint32{a, b, c}, atomsOf(list))
	396	+	n := settle(t, x, p)
	397	+
	398	+	x.Focus(sa)
	399	+	settle(t, x, p)
	400	+	stack, _ := p.prop(peerRoot, "_NET_CLIENT_LIST_STACKING")
	401	+	require.Equal(t, []uint32{b, c, a}, atomsOf(stack), "bottom to top")
	402	+	list, _ = p.prop(peerRoot, "_NET_CLIENT_LIST")
	403	+	require.Equal(t, []uint32{a, b, c}, atomsOf(list), "map order")
	404	+	require.Empty(t, propsTo(p, n, peerRoot, "_NET_CLIENT_LIST"), "clients list untouched by focus")
	405	+	var raised bool
	406	+	for _, r := range since(p, n, opConfigureWindow) {
	407	+	if r.u32(4) == a && binary.LittleEndian.Uint16(r.raw[8:]) == uint16(xproto.ConfigWindowStackMode) {
	408	+	require.EqualValues(t, xproto.StackModeAbove, r.u32(12))
	409	+	raised = true
	410	+	}
	411	+	}
	412	+	require.True(t, raised)
	413	+
	414	+	// A burst costs one write per list.
	415	+	n = settle(t, x, p)
	416	+	x.removeClient(b)
	417	+	x.removeClient(c)
	418	+	settle(t, x, p)
	419	+	require.Len(t, propsTo(p, n, peerRoot, "_NET_CLIENT_LIST"), 1)
	420	+	require.Len(t, propsTo(p, n, peerRoot, "_NET_CLIENT_LIST_STACKING"), 1)
	421	+	stack, _ = p.prop(peerRoot, "_NET_CLIENT_LIST_STACKING")
	422	+	require.Equal(t, []uint32{a}, atomsOf(stack))
	423	+	}
	424	+
	425	+	func TestDestroyedActiveWindowClearsActive(t *testing.T) {
	426	+	x, p, h, _, _ := attached(t)
	427	+	const win = 0x500001
	428	+	s := newWin(t, x, p, h, win)
	429	+	x.addClient(win)
	430	+	x.Focus(s)
	431	+	settle(t, x, p)
	432	+	h.EXPECT().Dissociate(s, true).Once()
	433	+	p.destroyNotify(win)
	434	+	readUntil(t, x, func() bool { return x.tab.lookup(win) == 0 })
	435	+	settle(t, x, p)
	436	+	require.Zero(t, x.active)
	437	+	act, _ := p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	438	+	require.Equal(t, []uint32{0}, atomsOf(act))
	439	+	list, _ := p.prop(peerRoot, "_NET_CLIENT_LIST")
	440	+	require.Empty(t, list.data)
	441	+	}
	442	+
	443	+	func TestFocusInDenied(t *testing.T) {
	444	+	x, p, h, _, _ := attached(t)
	445	+	const a, b = 0x500001, 0x500002
	446	+	sa := newWin(t, x, p, h, a)
	447	+	newWin(t, x, p, h, b)
	448	+	x.Focus(sa)
	449	+	n := settle(t, x, p)
	450	+
	451	+	focusIn := func(win uint32, detail byte) {
	452	+	p.event(9, func(e *[32]byte) {
	453	+	e[1] = detail
	454	+	binary.LittleEndian.PutUint32(e[4:], win)
	455	+	})
	456	+	}
	457	+	focusCount := func(skip int) int {
	458	+	c := 0
	459	+	for _, r := range since(p, skip, opSetInputFocus) {
	460	+	if r.u32(4) == a {
	461	+	c++
	462	+	}
	463	+	}
	464	+	return c
	465	+	}
	466	+	x.feed(t, p, func() { focusIn(a, 0) }) // the active window itself: fine
	467	+	x.feed(t, p, func() { focusIn(b, byte(xproto.NotifyDetailPointer)) })
	468	+	settle(t, x, p)
	469	+	require.Zero(t, focusCount(n))
	470	+
	471	+	x.feed(t, p, func() { focusIn(b, 0); focusIn(b, 0) })
	472	+	readUntil(t, x, func() bool { return x.stats.Events >= 5 })
	473	+	settle(t, x, p)
	474	+	require.Equal(t, 1, focusCount(n), "denied once per iteration")
	475	+	n = settle(t, x, p)
	476	+	settle(t, x, p)
	477	+	require.Zero(t, focusCount(n))
	478	+	}
	479	+
	480	+	func TestCloseWindow(t *testing.T) {
	481	+	x, p, h, _, _ := attached(t)
	482	+	const a, b = 0x500001, 0x500002
	483	+	sa, sb := newWin(t, x, p, h, a), newWin(t, x, p, h, b)
	484	+	x.tab.rec(sa).deleteWindow = true
	485	+	n := settle(t, x, p)
	486	+
	487	+	x.CloseWindow(sa)
	488	+	x.CloseWindow(sb)
	489	+	settle(t, x, p)
	490	+	evs := sentEvents(p, n, a)
	491	+	require.Len(t, evs, 1)
	492	+	require.EqualValues(t, 33, evs[0][0])
	493	+	require.EqualValues(t, 32, evs[0][1])
	494	+	require.Equal(t, p.atom("WM_PROTOCOLS"), binary.LittleEndian.Uint32(evs[0][8:]))
	495	+	require.Equal(t, p.atom("WM_DELETE_WINDOW"), binary.LittleEndian.Uint32(evs[0][12:]))
	496	+	require.Zero(t, binary.LittleEndian.Uint32(evs[0][16:]))
	497	+	require.Empty(t, sentEvents(p, n, b))
	498	+
	499	+	kills := since(p, n, opKillClient)
	500	+	require.Len(t, kills, 1)
	501	+	require.Equal(t, uint32(b), kills[0].u32(4))
	502	+	}
	503	+
	504	+	// Allocation guards. The peer sinks requests so the connection never blocks;
	505	+	// its goroutine is idle in the sink loop before measuring.
	506	+
	507	+	func sinkPeer(t testing.T, x XWM, p *xpeer) {
	508	+	t.Helper()
	509	+	p.sink.Store(true)
	510	+	n := len(p.requests())
	511	+	xproto.GetInputFocus(x.conn.Buf()) // served by the old loop iteration
	512	+	require.NoError(t, x.conn.Flush())
	513	+	p.waitReq(n, func(r xpeerReq) bool { return r.major == opGetInputFocus })
	514	+	// The peer records a request and answers it under mu: once the lock is
	515	+	// free again it is back in its sink loop, which does not allocate.
	516	+	p.mu.Lock()
	517	+	_ = p.seq
	518	+	p.mu.Unlock()
	519	+	x.src = nil // no source: write backpressure would not allocate either
	520	+	x.post = func(func()) {}
	521	+	x.warnedRing = true // the sink never answers: Expect slots stay used
	522	+	}
	523	+
	524	+	func TestConfigureFlushAllocations(t *testing.T) {
	525	+	x, p, h, _, _ := attached(t)
	526	+	s := newWin(t, x, p, h, 0x500001)
	527	+	sinkPeer(t, x, p)
	528	+	i := 0
	529	+	allocs := testing.AllocsPerRun(300, func() {
	530	+	i++
	531	+	x.Configure(s, ports.ConfigureWindow{Width: 100 + i%2, Height: 100, Fullscreen: i%3 == 0, Activated: i%2 == 0})
	532	+	x.Place(s, i%5, i%7)
	533	+	x.posted = false
	534	+	x.flush()
	535	+	})
	536	+	require.Zero(t, allocs)
	537	+	require.False(t, x.closed)
	538	+	}
	539	+
	540	+	func TestFocusAllocations(t *testing.T) {
	541	+	x, p, h, _, _ := attached(t)
	542	+	a, b := newWin(t, x, p, h, 0x500001), newWin(t, x, p, h, 0x500002)
	543	+	x.addClient(x.tab.rec(a).xid)
	544	+	x.addClient(x.tab.rec(b).xid)
	545	+	x.tab.rec(b).takeFocus = true
	546	+	x.tab.rec(a).input, x.tab.rec(b).input = true, true
	547	+	sinkPeer(t, x, p)
	548	+	i := 0
	549	+	allocs := testing.AllocsPerRun(150, func() {
	550	+	i++
	551	+	switch i % 3 {
	552	+	case 0:
	553	+	x.Focus(a)
	554	+	case 1:
	555	+	x.Focus(b)
	556	+	default:
	557	+	x.Focus(0)
	558	+	}
	559	+	x.refocus = i%5 == 0
	560	+	x.posted = false
	561	+	x.flush()
	562	+	})
	563	+	require.Zero(t, allocs)
	564	+	require.False(t, x.closed)
	565	+	}

A internal/adapters/wayland/xwm/events.go +260 -0

@@ -0,0 +1,260 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"bnema.dev/xturbo"
	5	+	"bnema.dev/xturbo/composite"
	6	+	"bnema.dev/xturbo/res"
	7	+	"bnema.dev/xturbo/xfixes"
	8	+	"bnema.dev/xturbo/xproto"
	9	+	)
	10	+
	11	+	// Reply kinds registered with Expect. The first argument is the window tag
	12	+	// (slot \| generation<<16, see table.tag), the second a property index.
	13	+	const (
	14	+	kindAttr uint16 = 16 + iota
	15	+	kindProp
	16	+	kindGeom
	17	+	kindClientIds
	18	+	kindConfigure
	19	+	kindFocus
	20	+	kindRootMask
	21	+	kindVersion
	22	+	kindTree
	23	+	kindOverrideType
	24	+	)
	25	+
	26	+	// onEvent dispatches an X event. Before Attach there is no host: only the
	27	+	// table is maintained, and Attach replays the result.
	28	+	func (x XWM) onEvent(ev xturbo.Event) {
	29	+	x.stats.Events++
	30	+	if x.closed {
	31	+	return
	32	+	}
	33	+	switch ev.Kind {
	34	+	case xproto.KindCreateNotify:
	35	+	x.onCreateNotify(ev)
	36	+	case xproto.KindDestroyNotify:
	37	+	x.onDestroyNotify(ev)
	38	+	case xproto.KindReparentNotify:
	39	+	x.onReparentNotify(ev)
	40	+	}
	41	+	if x.host == nil {
	42	+	x.onEventDetached(ev)
	43	+	return
	44	+	}
	45	+	switch ev.Kind {
	46	+	case xproto.KindMapRequest:
	47	+	x.onMapRequest(ev)
	48	+	case xproto.KindMapNotify:
	49	+	x.onMapNotify(ev)
	50	+	case xproto.KindUnmapNotify:
	51	+	x.onUnmapNotify(ev)
	52	+	case xproto.KindConfigureRequest:
	53	+	x.onConfigureRequest(ev)
	54	+	case xproto.KindConfigureNotify:
	55	+	x.onConfigureNotify(ev)
	56	+	case xproto.KindPropertyNotify:
	57	+	x.onPropertyNotify(ev)
	58	+	case xproto.KindClientMessage:
	59	+	x.onClientMessage(ev)
	60	+	case xproto.KindFocusIn:
	61	+	x.onFocusIn(ev)
	62	+	}
	63	+	}
	64	+
	65	+	// onEventDetached keeps what Attach replays: windows asked to map, and those
	66	+	// withdrawn again, so Attach skips them; geometry requests are answered.
	67	+	func (x XWM) onEventDetached(ev xturbo.Event) {
	68	+	switch ev.Kind {
	69	+	case xproto.KindMapRequest:
	70	+	if s := x.tab.lookup(uint32(xproto.MapRequestOf(ev).Window())); s != 0 {
	71	+	x.tab.rec(s).mapping = true
	72	+	}
	73	+	case xproto.KindUnmapNotify:
	74	+	if ev.SendEvent {
	75	+	return
	76	+	}
	77	+	if s := x.tab.lookup(uint32(xproto.UnmapNotifyOf(ev).Window())); s != 0 {
	78	+	r := x.tab.rec(s)
	79	+	r.mapped, r.mapping = false, false
	80	+	}
	81	+	case xproto.KindConfigureRequest:
	82	+	x.onConfigureRequest(ev)
	83	+	}
	84	+	}
	85	+
	86	+	func (x XWM) onReply(r xturbo.Reply) {
	87	+	x.stats.Replies++
	88	+	if x.closed {
	89	+	return
	90	+	}
	91	+	switch r.Kind {
	92	+	case kindVersion:
	93	+	x.onVersionReply(r)
	94	+	return
	95	+	case kindTree:
	96	+	x.onTreeReply(r)
	97	+	return
	98	+	}
	99	+	s, rec := x.tab.live(r.Args[0])
	100	+	if rec == nil {
	101	+	x.stats.Stale++
	102	+	return
	103	+	}
	104	+	switch r.Kind {
	105	+	case kindAttr:
	106	+	x.onAttrReply(rec, r)
	107	+	case kindProp:
	108	+	x.onPropReply(s, rec, r)
	109	+	case kindGeom:
	110	+	x.onGeomReply(s, rec, r)
	111	+	case kindClientIds:
	112	+	x.onClientIdsReply(s, rec, r)
	113	+	case kindOverrideType:
	114	+	x.onOverrideType(s, rec, r)
	115	+	}
	116	+	}
	117	+
	118	+	// onError never tears the XWM down: an error names a request, not the
	119	+	// connection. Sticky Buf errors surface through Flush.
	120	+	func (x XWM) onError(e xturbo.XError) {
	121	+	x.stats.Errors++
	122	+	if e.Kind == 0 {
	123	+	x.stats.Unattributed++
	124	+	x.log.Debug().Uint8("code", e.Code).Uint8("major", e.Major).Uint16("minor", e.Minor).
	125	+	Uint64("seq", uint64(e.Seq)).Msg("unattributed X error")
	126	+	return
	127	+	}
	128	+	switch e.Kind {
	129	+	case kindRootMask:
	130	+	if e.Code == xproto.BadAccess {
	131	+	x.bootErr = ErrWMExists
	132	+	}
	133	+	case kindProp, kindGeom, kindClientIds, kindConfigure, kindFocus, kindOverrideType:
	134	+	// Usually BadWindow: the window died between request and reply and
	135	+	// DestroyNotify follows. Whatever the code, the awaited reply will
	136	+	// never come, so the map must not wait for it.
	137	+	s, rec := x.tab.live(e.Args[0])
	138	+	if rec == nil {
	139	+	x.stats.Stale++
	140	+	return
	141	+	}
	142	+	switch e.Kind {
	143	+	case kindProp:
	144	+	rec.pending &^= 1 << e.Args[1]
	145	+	case kindGeom:
	146	+	rec.pending &^= propGeom
	147	+	case kindClientIds:
	148	+	rec.pending &^= propClientIDs
	149	+	case kindOverrideType:
	150	+	if e.Code != xproto.BadWindow { // typed unknown: the window still shows
	151	+	x.overrideReady(s)
	152	+	}
	153	+	return
	154	+	default:
	155	+	return
	156	+	}
	157	+	if e.Code != xproto.BadWindow && e.Code != xproto.BadDrawable { // a dead window is never announced
	158	+	x.checkReady(s)
	159	+	}
	160	+	}
	161	+	}
	162	+
	163	+	// onCreateNotify records a new top-level window. Override-redirect windows
	164	+	// are kept (their geometry and serial matter later) but never reach the host.
	165	+	func (x XWM) onCreateNotify(ev xturbo.Event) {
	166	+	e := xproto.CreateNotifyOf(ev)
	167	+	xid := uint32(e.Window())
	168	+	if xid == x.wmWin \|\| x.tab.lookup(xid) != 0 {
	169	+	return
	170	+	}
	171	+	s := x.insert(xid)
	172	+	if s == 0 {
	173	+	return
	174	+	}
	175	+	r := x.tab.rec(s)
	176	+	override := e.OverrideRedirect()
	177	+	r.x, r.y, r.w, r.h = int32(e.X()), int32(e.Y()), uint32(e.Width()), uint32(e.Height())
	178	+	if override {
	179	+	r.kind = kindUnmanaged
	180	+	x.stats.UnmanagedSeen++
	181	+	return
	182	+	}
	183	+	if x.host != nil {
	184	+	x.adopt(s)
	185	+	}
	186	+	}
	187	+
	188	+	// adopt announces a managed window to the host and starts watching it.
	189	+	func (x *XWM) adopt(s Slot) {
	190	+	r := x.tab.rec(s)
	191	+	r.id = x.host.Created(s, r.xid)
	192	+	var v xproto.ChangeWindowAttributesValues
	193	+	v.SetEventMask(xproto.EventMaskPropertyChange \| xproto.EventMaskFocusChange)
	194	+	x.expect(xproto.ChangeWindowAttributes(x.conn.Buf(), xproto.Window(r.xid), &v), kindAttr, x.tab.tag(s), 0)
	195	+	x.log.Debug().Uint32("xid", r.xid).Uint32("slot", uint32(s)).Msg("x11 window created")
	196	+	}
	197	+
	198	+	func (x XWM) onDestroyNotify(ev xturbo.Event) {
	199	+	xid := uint32(xproto.DestroyNotifyOf(ev).Window())
	200	+	s := x.tab.lookup(xid)
	201	+	if s == 0 {
	202	+	return
	203	+	}
	204	+	x.forgetWindow(s)
	205	+	}
	206	+
	207	+	// onTreeReply (boot): record every existing child and ask for its attributes.
	208	+	func (x XWM) onTreeReply(r xturbo.Reply) {
	209	+	q, ok := xproto.ParseQueryTreeReply(r.Raw)
	210	+	if !ok {
	211	+	return
	212	+	}
	213	+	children := q.Children()
	214	+	for i := 0; i < children.Len(); i++ {
	215	+	xid := uint32(children.At(i))
	216	+	if xid == x.wmWin \|\| x.tab.lookup(xid) != 0 {
	217	+	continue
	218	+	}
	219	+	s := x.insert(xid)
	220	+	if s == 0 {
	221	+	return
	222	+	}
	223	+	x.expect(xproto.GetWindowAttributes(x.conn.Buf(), xproto.Window(xid)), kindAttr, x.tab.tag(s), 0)
	224	+	}
	225	+	}
	226	+
	227	+	// onAttrReply (boot): classify an existing window; viewable ones go through
	228	+	// the map flow once the host is attached.
	229	+	func (x XWM) onAttrReply(rec record, r *xturbo.Reply) {
	230	+	a, ok := xproto.ParseGetWindowAttributesReply(r.Raw)
	231	+	if !ok \|\| x.host != nil {
	232	+	return
	233	+	}
	234	+	if a.OverrideRedirect() {
	235	+	rec.kind = kindUnmanaged
	236	+	rec.mapped = a.MapState() == xproto.MapStateViewable
	237	+	x.stats.UnmanagedSeen++
	238	+	return
	239	+	}
	240	+	if a.MapState() == xproto.MapStateViewable {
	241	+	rec.mapped, rec.mapping = true, true
	242	+	}
	243	+	}
	244	+
	245	+	func (x XWM) onVersionReply(r xturbo.Reply) {
	246	+	switch r.Args[0] {
	247	+	case versionComposite:
	248	+	if v, ok := composite.ParseQueryVersionReply(r.Raw); ok {
	249	+	x.log.Info().Uint32("major", v.MajorVersion()).Uint32("minor", v.MinorVersion()).Msg("Composite")
	250	+	}
	251	+	case versionXFixes:
	252	+	if v, ok := xfixes.ParseQueryVersionReply(r.Raw); ok {
	253	+	x.log.Info().Uint32("major", v.MajorVersion()).Uint32("minor", v.MinorVersion()).Msg("XFixes")
	254	+	}
	255	+	case versionRes:
	256	+	if v, ok := res.ParseQueryVersionReply(r.Raw); ok {
	257	+	x.log.Info().Uint16("major", v.ServerMajor()).Uint16("minor", v.ServerMinor()).Msg("X-Resource")
	258	+	}
	259	+	}
	260	+	}

A internal/adapters/wayland/xwm/fdsource_mock_test.go +129 -0

@@ -0,0 +1,129 @@
	1	+	// Code generated by mockery; DO NOT EDIT.
	2	+	// github.com/vektra/mockery
	3	+	// template: testify
	4	+
	5	+	package xwm
	6	+
	7	+	import (
	8	+	mock "github.com/stretchr/testify/mock"
	9	+	)
	10	+
	11	+	// newMockfdSource creates a new instance of mockfdSource. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
	12	+	// The first argument is typically a *testing.T value.
	13	+	func newMockfdSource(t interface {
	14	+	mock.TestingT
	15	+	Cleanup(func())
	16	+	}) *mockfdSource {
	17	+	if helper, ok := t.(interface{ Helper() }); ok {
	18	+	helper.Helper()
	19	+	}
	20	+
	21	+	mock := &mockfdSource{}
	22	+	mock.Mock.Test(t)
	23	+
	24	+	t.Cleanup(func() {
	25	+	if helper, ok := t.(interface{ Helper() }); ok {
	26	+	helper.Helper()
	27	+	}
	28	+	mock.AssertExpectations(t)
	29	+	})
	30	+
	31	+	return mock
	32	+	}
	33	+
	34	+	// mockfdSource is an autogenerated mock type for the fdSource type
	35	+	type mockfdSource struct {
	36	+	mock.Mock
	37	+	}
	38	+
	39	+	type mockfdSource_Expecter struct {
	40	+	mock *mock.Mock
	41	+	}
	42	+
	43	+	func (_m mockfdSource) EXPECT() mockfdSource_Expecter {
	44	+	return &mockfdSource_Expecter{mock: &_m.Mock}
	45	+	}
	46	+
	47	+	// Remove provides a mock function for the type mockfdSource
	48	+	func (_mock *mockfdSource) Remove() {
	49	+	_mock.Called()
	50	+	return
	51	+	}
	52	+
	53	+	// mockfdSource_Remove_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Remove'
	54	+	type mockfdSource_Remove_Call struct {
	55	+	*mock.Call
	56	+	}
	57	+
	58	+	// Remove is a helper method to define mock.On call
	59	+	func (_e mockfdSource_Expecter) Remove() mockfdSource_Remove_Call {
	60	+	return &mockfdSource_Remove_Call{Call: _e.mock.On("Remove")}
	61	+	}
	62	+
	63	+	func (_c mockfdSource_Remove_Call) Run(run func()) mockfdSource_Remove_Call {
	64	+	_c.Call.Run(func(args mock.Arguments) {
	65	+	run()
	66	+	})
	67	+	return _c
	68	+	}
	69	+
	70	+	func (_c mockfdSource_Remove_Call) Return() mockfdSource_Remove_Call {
	71	+	_c.Call.Return()
	72	+	return _c
	73	+	}
	74	+
	75	+	func (_c mockfdSource_Remove_Call) RunAndReturn(run func()) mockfdSource_Remove_Call {
	76	+	_c.Run(run)
	77	+	return _c
	78	+	}
	79	+
	80	+	// SetWritable provides a mock function for the type mockfdSource
	81	+	func (_mock *mockfdSource) SetWritable(on bool) error {
	82	+	ret := _mock.Called(on)
	83	+
	84	+	if len(ret) == 0 {
	85	+	panic("no return value specified for SetWritable")
	86	+	}
	87	+
	88	+	var r0 error
	89	+	if returnFunc, ok := ret.Get(0).(func(bool) error); ok {
	90	+	r0 = returnFunc(on)
	91	+	} else {
	92	+	r0 = ret.Error(0)
	93	+	}
	94	+	return r0
	95	+	}
	96	+
	97	+	// mockfdSource_SetWritable_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'SetWritable'
	98	+	type mockfdSource_SetWritable_Call struct {
	99	+	*mock.Call
	100	+	}
	101	+
	102	+	// SetWritable is a helper method to define mock.On call
	103	+	// - on bool
	104	+	func (_e mockfdSource_Expecter) SetWritable(on any) mockfdSource_SetWritable_Call {
	105	+	return &mockfdSource_SetWritable_Call{Call: _e.mock.On("SetWritable", on)}
	106	+	}
	107	+
	108	+	func (_c mockfdSource_SetWritable_Call) Run(run func(on bool)) mockfdSource_SetWritable_Call {
	109	+	_c.Call.Run(func(args mock.Arguments) {
	110	+	var arg0 bool
	111	+	if args[0] != nil {
	112	+	arg0 = args[0].(bool)
	113	+	}
	114	+	run(
	115	+	arg0,
	116	+	)
	117	+	})
	118	+	return _c
	119	+	}
	120	+
	121	+	func (_c mockfdSource_SetWritable_Call) Return(err error) mockfdSource_SetWritable_Call {
	122	+	_c.Call.Return(err)
	123	+	return _c
	124	+	}
	125	+
	126	+	func (_c mockfdSource_SetWritable_Call) RunAndReturn(run func(on bool) error) mockfdSource_SetWritable_Call {
	127	+	_c.Call.Return(run)
	128	+	return _c
	129	+	}

A internal/adapters/wayland/xwm/fixes_test.go +230 -0

@@ -0,0 +1,230 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"testing"
	6	+
	7	+	"bnema.dev/xturbo"
	8	+	"bnema.dev/xturbo/xproto"
	9	+	"github.com/bnema/neferwl/internal/ports"
	10	+	"github.com/stretchr/testify/mock"
	11	+	"github.com/stretchr/testify/require"
	12	+	)
	13	+
	14	+	func getProps(p *xpeer, skip int, win uint32) int {
	15	+	n := 0
	16	+	for _, r := range since(p, skip, opGetProperty) {
	17	+	if r.u32(4) == win {
	18	+	n++
	19	+	}
	20	+	}
	21	+	return n
	22	+	}
	23	+
	24	+	// Our own _NET_WM_STATE writes must not be read back once the window is ready.
	25	+	func TestOwnNetWMStateWriteIsNotReadBack(t *testing.T) {
	26	+	hs := newHarness(t, nil)
	27	+	const win = 0x500001
	28	+	hs.classic(win)
	29	+	s := hs.mapAndWait(win)
	30	+
	31	+	hs.x.Configure(s, ports.ConfigureWindow{Width: 300, Height: 200, Fullscreen: true})
	32	+	n := settle(t, hs.x, hs.p)
	33	+	require.True(t, hs.x.tab.rec(s).fullscreen, "the written state is the known state")
	34	+	st, _ := hs.p.prop(win, "_NET_WM_STATE")
	35	+	require.Equal(t, []uint32{hs.p.atom("_NET_WM_STATE_FULLSCREEN")}, atomsOf(st))
	36	+
	37	+	ev := hs.x.Stats().Events
	38	+	hs.p.propertyNotify(win, hs.p.atom("_NET_WM_STATE"), false)
	39	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events > ev })
	40	+	settle(t, hs.x, hs.p)
	41	+	require.Zero(t, getProps(hs.p, n, win), "no GetProperty")
	42	+
	43	+	}
	44	+
	45	+	// A pre-map XMoveResize is honoured, floating or not.
	46	+	func TestConfigureRequestBeforeReadyIsHonoured(t *testing.T) {
	47	+	hs := newHarness(t, nil)
	48	+	const win = 0x500001
	49	+	hs.classic(win)
	50	+	hs.create(win)
	51	+	n := settle(t, hs.x, hs.p)
	52	+
	53	+	mask := uint16(xproto.ConfigWindowX \| xproto.ConfigWindowY \| xproto.ConfigWindowWidth \| xproto.ConfigWindowHeight)
	54	+	hs.x.feed(t, hs.p, func() { sendConfigureRequest(hs.p, win, mask, 11, 22, 640, 70000&0xffff) })
	55	+	settle(t, hs.x, hs.p)
	56	+	cw := since(hs.p, n, opConfigureWindow)
	57	+	require.Len(t, cw, 1)
	58	+	require.Equal(t, []uint32{11, 22, 640, 4464}, []uint32{cw[0].u32(12), cw[0].u32(16), cw[0].u32(20), cw[0].u32(24)})
	59	+	require.Len(t, sentEvents(hs.p, n, win), 1)
	60	+
	61	+	hs.expectReady(win)
	62	+	hs.p.mapRequest(win)
	63	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	64	+	require.Equal(t, 640, hs.ready[win].Width)
	65	+	require.Equal(t, 4464, hs.ready[win].Height)
	66	+	require.False(t, hs.ready[win].Floating)
	67	+	}
	68	+
	69	+	// After a remap the state is rewritten from scratch, FOCUSED included.
	70	+	func TestRemapRewritesStateWithFocused(t *testing.T) {
	71	+	hs := newHarness(t, nil)
	72	+	const win = 0x500001
	73	+	hs.classic(win)
	74	+	s := hs.mapAndWait(win)
	75	+	hs.x.Focus(s)
	76	+	settle(t, hs.x, hs.p)
	77	+	st, _ := hs.p.prop(win, "_NET_WM_STATE")
	78	+	require.Equal(t, []uint32{hs.p.atom("_NET_WM_STATE_FOCUSED")}, atomsOf(st))
	79	+
	80	+	hs.h.EXPECT().Dissociate(s, false).Once()
	81	+	hs.p.unmapNotify(win, false)
	82	+	readUntil(t, hs.x, func() bool { return !hs.x.tab.rec(s).mapping })
	83	+	delete(hs.ready, win)
	84	+	hs.expectReady(win)
	85	+	hs.p.mapRequest(win)
	86	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	87	+
	88	+	hs.x.Focus(s)
	89	+	settle(t, hs.x, hs.p)
	90	+	st, _ = hs.p.prop(win, "_NET_WM_STATE")
	91	+	require.Equal(t, []uint32{hs.p.atom("_NET_WM_STATE_FOCUSED")}, atomsOf(st))
	92	+	}
	93	+
	94	+	// Replies of a previous map never satisfy the next one (xturbo usually retires
	95	+	// their slots first; the generation guards the rest).
	96	+	func TestStaleRepliesOfPreviousMapAreDropped(t *testing.T) {
	97	+	hs := newHarness(t, nil)
	98	+	const win = 0x500001
	99	+	hs.classic(win)
	100	+	s := hs.create(win)
	101	+	hs.p.holdReplies() // the second map is never answered
	102	+	hs.p.mapRequest(win)
	103	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).mapping })
	104	+	oldTag := hs.x.tab.tag(s)
	105	+	hs.h.EXPECT().Dissociate(s, false).Once()
	106	+	hs.p.unmapNotify(win, false)
	107	+	readUntil(t, hs.x, func() bool { return !hs.x.tab.rec(s).mapping })
	108	+	hs.p.mapRequest(win)
	109	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).mapping })
	110	+	require.NotEqual(t, oldTag, hs.x.tab.tag(s))
	111	+
	112	+	rep := make([]byte, 32)
	113	+	rep[0] = 1
	114	+	for idx := 0; idx < propCount; idx++ {
	115	+	hs.x.onReply(&xturbo.Reply{Kind: kindProp, Args: [4]uint32{oldTag, uint32(idx)}, Raw: rep})
	116	+	}
	117	+	hs.x.onReply(&xturbo.Reply{Kind: kindGeom, Args: [4]uint32{oldTag}, Raw: rep})
	118	+	require.EqualValues(t, propCount+1, hs.x.Stats().Stale)
	119	+	require.False(t, hs.x.tab.rec(s).ready)
	120	+	require.Equal(t, propMaskAll&^propClientIDs, hs.x.tab.rec(s).pending, "the new map still awaits its own replies")
	121	+	}
	122	+
	123	+	func TestGetGeometryBadDrawableIsNotReady(t *testing.T) {
	124	+	hs := newHarness(t, nil)
	125	+	const win = 0x500001
	126	+	hs.classic(win)
	127	+	s := hs.create(win)
	128	+	hs.p.set(func(p *xpeer) { p.bad[win] = true })
	129	+	hs.p.mapRequest(win)
	130	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Errors >= uint64(propCount)+1 })
	131	+	require.Zero(t, hs.x.Stats().Unattributed)
	132	+	require.False(t, hs.x.tab.rec(s).ready)
	133	+	hs.h.EXPECT().Dissociate(s, true).Once()
	134	+	hs.p.destroyNotify(win)
	135	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(win) == 0 })
	136	+	}
	137	+
	138	+	// A host that refocuses the window while dissociating it must not leave a
	139	+	// dangling active slot.
	140	+	func TestForgetWindowClearsActiveSetByHost(t *testing.T) {
	141	+	x, p, h, _, _ := attached(t)
	142	+	const win = 0x500001
	143	+	s := newWin(t, x, p, h, win)
	144	+	h.EXPECT().Dissociate(s, true).Run(func(sl Slot, _ bool) { x.Focus(sl) }).Once()
	145	+	p.destroyNotify(win)
	146	+	readUntil(t, x, func() bool { return x.tab.lookup(win) == 0 })
	147	+	require.Zero(t, x.active)
	148	+	require.False(t, x.refocus)
	149	+	settle(t, x, p)
	150	+	act, _ := p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	151	+	require.Equal(t, []uint32{0}, atomsOf(act))
	152	+	}
	153	+
	154	+	func TestTitleAndAppIDAreValidUTF8(t *testing.T) {
	155	+	hs := newHarness(t, nil)
	156	+	const win = 0x500001
	157	+	hs.classic(win)
	158	+	hs.p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_NAME"]) })
	159	+	hs.p.setProp(win, uint32(xproto.AtomWmName), uint32(xproto.AtomString), 8, []byte("caf\xe9"))
	160	+	hs.p.setProp(win, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("i\x00C\xe9\x00"))
	161	+	s := hs.mapAndWait(win)
	162	+	require.Equal(t, "caf\uFFFD", hs.ready[win].Title)
	163	+	require.Equal(t, "C\uFFFD", hs.ready[win].AppID)
	164	+
	165	+	// Unchanged after sanitising: no host call.
	166	+	hs.notifyWMName(win)
	167	+	// A changed truncated multibyte title reaches the host sanitised.
	168	+	hs.h.EXPECT().Title(s, "\u00e9\uFFFD").Once()
	169	+	hs.p.setProp(win, uint32(xproto.AtomWmName), uint32(xproto.AtomString), 8, []byte("\xc3\xa9\xe2\x82"))
	170	+	hs.notifyWMName(win)
	171	+	}
	172	+
	173	+	func TestSyntheticConfigureNotifyClampsCoordinates(t *testing.T) {
	174	+	x, p, h, _, _ := attached(t)
	175	+	const win = 0x500001
	176	+	s := newWin(t, x, p, h, win)
	177	+	n := settle(t, x, p)
	178	+	r := x.tab.rec(s)
	179	+	r.x, r.y, r.w, r.h = 70000, -70000, 70000, 5
	180	+	x.sendConfigureNotify(r)
	181	+	settle(t, x, p)
	182	+	ev := sentEvents(p, n, win)
	183	+	require.Len(t, ev, 1)
	184	+	require.EqualValues(t, 32767, int16(binary.LittleEndian.Uint16(ev[0][16:])))
	185	+	require.EqualValues(t, -32768, int16(binary.LittleEndian.Uint16(ev[0][18:])))
	186	+	require.EqualValues(t, 65535, binary.LittleEndian.Uint16(ev[0][20:]))
	187	+	require.EqualValues(t, 5, binary.LittleEndian.Uint16(ev[0][22:]))
	188	+	}
	189	+
	190	+	// A window withdrawn before Attach is not mapped by Attach; a pre-attach
	191	+	// ConfigureRequest is honoured.
	192	+	func TestUnmapAndConfigureBeforeAttach(t *testing.T) {
	193	+	x, p := bootPeer(t, nil)
	194	+	const gone, sized = 0x500001, 0x500002
	195	+	for _, w := range []uint32{gone, sized} {
	196	+	p.setProp(w, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("a\x00B\x00"))
	197	+	p.geoms[w] = xpeerGeom{w: 300, h: 200}
	198	+	p.createNotify(w, false)
	199	+	p.mapRequest(w)
	200	+	}
	201	+	p.unmapNotify(gone, false)
	202	+	mask := uint16(xproto.ConfigWindowWidth \| xproto.ConfigWindowHeight)
	203	+	sendConfigureRequest(p, sized, mask, 0, 0, 500, 400)
	204	+	readUntil(t, x, func() bool { return x.Stats().Events >= 6 })
	205	+	n := len(p.requests())
	206	+
	207	+	h := newMockhost(t)
	208	+	src := newMockfdSource(t)
	209	+	src.EXPECT().Remove().Maybe()
	210	+	post, _ := newPost()
	211	+	var got WindowInfo
	212	+	done := false
	213	+	h.EXPECT().Created(mock.Anything, mock.Anything).Return(ports.WindowID(1)).Twice()
	214	+	h.EXPECT().Ready(mock.Anything, mock.Anything).Run(func(_ Slot, i WindowInfo) { got, done = i, true }).Once()
	215	+	x.attach(src, h, post)
	216	+	readUntil(t, x, func() bool { return done })
	217	+	settle(t, x, p)
	218	+	for _, r := range since(p, n, opMapWindow) {
	219	+	require.NotEqual(t, uint32(gone), r.u32(4), "withdrawn window must not be mapped")
	220	+	}
	221	+	require.Equal(t, 500, got.Width)
	222	+	require.Equal(t, 400, got.Height)
	223	+	}
	224	+
	225	+	func (hs *harness) notifyWMName(win uint32) {
	226	+	hs.t.Helper()
	227	+	before := hs.x.Stats().Replies
	228	+	hs.p.propertyNotify(win, uint32(xproto.AtomWmName), false)
	229	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Replies > before })
	230	+	}

A internal/adapters/wayland/xwm/focus.go +218 -0

@@ -0,0 +1,218 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"slices"
	6	+
	7	+	"bnema.dev/xturbo"
	8	+	"bnema.dev/xturbo/xproto"
	9	+	)
	10	+
	11	+	// Bits of XWM.listsDirty: the client lists to rewrite at flush.
	12	+	const (
	13	+	listClients uint8 = 1 << iota
	14	+	listStacking
	15	+	)
	16	+
	17	+	// onFocusIn denies a focus change the XWM did not make: Wayland is the truth.
	18	+	// The active window's focus is re-issued once at the next flush.
	19	+	func (x XWM) onFocusIn(ev xturbo.Event) {
	20	+	e := xproto.FocusInOf(ev)
	21	+	if e.Detail() == xproto.NotifyDetailPointer {
	22	+	return
	23	+	}
	24	+	// Keyboard grabs are how menus steal focus legitimately (wlroots does
	25	+	// the same): fighting them would close every Steam menu.
	26	+	if e.Mode() == xproto.NotifyModeGrab \|\| e.Mode() == xproto.NotifyModeUngrab {
	27	+	return
	28	+	}
	29	+	s := x.tab.lookup(uint32(e.Event()))
	30	+	if s == 0 \|\| s == x.active {
	31	+	return
	32	+	}
	33	+	if r := x.tab.rec(s); r.kind == kindUnmanaged {
	34	+	return
	35	+	}
	36	+	x.refocus = true
	37	+	x.wake()
	38	+	}
	39	+
	40	+	// Focus gives keyboard focus to s; 0 means a native Wayland window or none.
	41	+	// Focus never uses PointerRoot: without an X window to focus it is None.
	42	+	func (x *XWM) Focus(s Slot) {
	43	+	if x.closed {
	44	+	return
	45	+	}
	46	+	r := x.managedRec(s)
	47	+	if r == nil {
	48	+	s = 0
	49	+	}
	50	+	if s == x.active {
	51	+	return
	52	+	}
	53	+	if old := x.managedRec(x.active); old != nil {
	54	+	old.pend.activated = false
	55	+	x.markDirty(x.active, old)
	56	+	}
	57	+	x.active = s
	58	+	if r == nil {
	59	+	x.issueFocus(0, nil)
	60	+	x.setActive(0)
	61	+	x.wake()
	62	+	return
	63	+	}
	64	+	r.pend.activated = true
	65	+	x.markDirty(s, r)
	66	+	x.issueFocus(s, r)
	67	+	x.setActive(r.xid)
	68	+	x.raise(r)
	69	+	x.wake()
	70	+	}
	71	+
	72	+	// issueFocus applies the ICCCM input model of r: Passive and Locally active
	73	+	// windows get SetInputFocus, Locally and Globally active ones WM_TAKE_FOCUS,
	74	+	// No-input windows nothing. A nil r clears the X focus.
	75	+	func (x XWM) issueFocus(s Slot, r record) {
	76	+	b := x.conn.Buf()
	77	+	if r == nil {
	78	+	xproto.SetInputFocus(b, xproto.InputFocusNone, xproto.WindowNone, 0)
	79	+	return
	80	+	}
	81	+	if r.input {
	82	+	x.expect(xproto.SetInputFocus(b, xproto.InputFocusNone, xproto.Window(r.xid), 0), kindFocus, x.tab.tag(s), 0)
	83	+	}
	84	+	if r.takeFocus {
	85	+	x.sendProtocol(r.xid, atomWMTakeFocus)
	86	+	}
	87	+	}
	88	+
	89	+	// sendProtocol sends a WM_PROTOCOLS client message [proto, CurrentTime].
	90	+	func (x *XWM) sendProtocol(xid uint32, proto int) {
	91	+	var raw [32]byte
	92	+	raw[0], raw[1] = 33, 32 // ClientMessage, format 32
	93	+	binary.LittleEndian.PutUint32(raw[4:], xid)
	94	+	binary.LittleEndian.PutUint32(raw[8:], x.atoms[atomWMProtocols])
	95	+	binary.LittleEndian.PutUint32(raw[12:], x.atoms[proto])
	96	+	xproto.SendEvent(x.conn.Buf(), false, xproto.Window(xid), xproto.EventMaskNoEvent, &raw)
	97	+	}
	98	+
	99	+	// setActive writes _NET_ACTIVE_WINDOW on the root.
	100	+	func (x *XWM) setActive(xid uint32) {
	101	+	v := [1]uint32{xid}
	102	+	x.setProp32(x.root, atomNetActiveWindow, xproto.AtomWindow, v[:])
	103	+	}
	104	+
	105	+	// raise restacks r above its siblings and at the top of the stacking list.
	106	+	func (x XWM) raise(r record) {
	107	+	var v xproto.ConfigureWindowValues
	108	+	v.SetStackMode(xproto.StackModeAbove)
	109	+	xproto.ConfigureWindow(x.conn.Buf(), xproto.Window(r.xid), &v)
	110	+	if i := slices.Index(x.stacking, r.xid); i >= 0 {
	111	+	x.stacking = append(x.stacking[:i], x.stacking[i+1:]...)
	112	+	x.stacking = append(x.stacking, r.xid)
	113	+	x.listsDirty \|= listStacking
	114	+	}
	115	+	}
	116	+
	117	+	// CloseWindow asks s to close (WM_DELETE_WINDOW), or kills its client.
	118	+	func (x *XWM) CloseWindow(s Slot) {
	119	+	r := x.managedRec(s)
	120	+	if r == nil {
	121	+	return
	122	+	}
	123	+	if r.deleteWindow {
	124	+	x.sendProtocol(r.xid, atomWMDeleteWindow)
	125	+	} else {
	126	+	xproto.KillClient(x.conn.Buf(), r.xid)
	127	+	}
	128	+	x.wake()
	129	+	}
	130	+
	131	+	// addClient puts a ready window at the end of both client lists.
	132	+	func (x *XWM) addClient(xid uint32) {
	133	+	if !slices.Contains(x.clients, xid) {
	134	+	x.clients = append(x.clients, xid)
	135	+	x.listsDirty \|= listClients
	136	+	}
	137	+	if !slices.Contains(x.stacking, xid) {
	138	+	x.stacking = append(x.stacking, xid)
	139	+	x.listsDirty \|= listStacking
	140	+	}
	141	+	x.wake()
	142	+	}
	143	+
	144	+	// removeClient drops an unmapped or destroyed window from both client lists.
	145	+	func (x *XWM) removeClient(xid uint32) {
	146	+	if i := slices.Index(x.clients, xid); i >= 0 {
	147	+	x.clients = slices.Delete(x.clients, i, i+1)
	148	+	x.listsDirty \|= listClients
	149	+	}
	150	+	if i := slices.Index(x.stacking, xid); i >= 0 {
	151	+	x.stacking = slices.Delete(x.stacking, i, i+1)
	152	+	x.listsDirty \|= listStacking
	153	+	}
	154	+	x.wake()
	155	+	}
	156	+
	157	+	// dropWindow takes s out of the client lists, the focus and the configure
	158	+	// queue when it stops being mapped (unmap, destroy). It is idempotent.
	159	+	func (x *XWM) dropWindow(s Slot) {
	160	+	r := x.tab.rec(s)
	161	+	if r != nil {
	162	+	r.ovQueued = false // a reused slot must not inherit a queued report
	163	+	}
	164	+	if r == nil \|\| r.kind != kindManaged {
	165	+	return
	166	+	}
	167	+	x.removeClient(r.xid)
	168	+	r.pend.dirty = false // the queued slot is skipped at flush
	169	+	// A remap starts from a clean _NET_WM_STATE, so Focus writes FOCUSED again.
	170	+	r.pend.activated, r.sent.activated = false, false
	171	+	r.sent.fullscreen, r.stateSent = false, 0
	172	+	if x.active == s {
	173	+	x.active = 0
	174	+	x.refocus = false
	175	+	x.setActive(0)
	176	+	}
	177	+	}
	178	+
	179	+	// forgetWindow ends the life of s (destroy, reparent away): it is dropped,
	180	+	// the host is told if it knew the window, and the record is freed.
	181	+	func (x *XWM) forgetWindow(s Slot) {
	182	+	r := x.tab.rec(s)
	183	+	if r == nil \|\| r.kind == kindFree {
	184	+	return
	185	+	}
	186	+	x.dropWindow(s)
	187	+	if r.kind == kindUnmanaged && r.ovPaired && x.host != nil {
	188	+	r.ovPaired = false
	189	+	x.host.OverrideGone(s)
	190	+	}
	191	+	if r.kind == kindManaged && r.id != 0 && x.host != nil {
	192	+	r.id = 0
	193	+	x.host.Dissociate(s, true)
	194	+	if x.active == s { // the host re-focused the window while dissociating it
	195	+	x.active, x.refocus = 0, false
	196	+	x.issueFocus(0, nil)
	197	+	x.setActive(0)
	198	+	x.wake()
	199	+	}
	200	+	}
	201	+	x.tab.remove(s)
	202	+	}
	203	+
	204	+	// flushFocus rewrites the client lists that changed and re-issues a denied
	205	+	// focus, once per display iteration.
	206	+	func (x *XWM) flushFocus() {
	207	+	if x.listsDirty&listClients != 0 {
	208	+	x.setProp32(x.root, atomNetClientList, xproto.AtomWindow, x.clients)
	209	+	}
	210	+	if x.listsDirty&listStacking != 0 {
	211	+	x.setProp32(x.root, atomNetClientListStacking, xproto.AtomWindow, x.stacking)
	212	+	}
	213	+	x.listsDirty = 0
	214	+	if x.refocus {
	215	+	x.refocus = false
	216	+	x.issueFocus(x.active, x.managedRec(x.active))
	217	+	}
	218	+	}

A internal/adapters/wayland/xwm/host.go +57 -0

@@ -0,0 +1,57 @@
	1	+	package xwm
	2	+
	3	+	import "github.com/bnema/neferwl/internal/ports"
	4	+
	5	+	// Slot is the XWM's window slot: table index + 1, stable until the window is
	6	+	// destroyed. 0 means none.
	7	+	type Slot uint32
	8	+
	9	+	// WindowInfo is what the XWM learned about a managed window by the time it is
	10	+	// ready to be mapped. The host copies it.
	11	+	type WindowInfo struct {
	12	+	PID int
	13	+	Floating bool // dialog/utility/splash/fixed size
	14	+	Width, Height int // requested size, logical (scale 1)
	15	+	Parent Slot
	16	+	Modal bool // _NET_WM_STATE_MODAL
	17	+	Fullscreen bool // _NET_WM_STATE_FULLSCREEN at map
	18	+	Title, AppID string
	19	+	}
	20	+
	21	+	// host is the wayland server as the XWM sees it. Display goroutine only.
	22	+	// All strings passed are owned by the XWM record and already deduplicated
	23	+	// (only passed when changed).
	24	+	type host interface {
	25	+	// Created: a managed (non-override-redirect) X window is known; the host
	26	+	// allocates a ports.WindowID and returns it. Not yet mapped.
	27	+	Created(slot Slot, xid uint32) ports.WindowID
	28	+	// Ready: properties read and MapWindow issued; the surface may still be
	29	+	// missing. Info is copied by the host.
	30	+	Ready(slot Slot, info WindowInfo)
	31	+	// Associate links the X window to the wl_surface with identity surfaceID.
	32	+	// The host maps the window on the surface's first buffer commit.
	33	+	Associate(slot Slot, surfaceID uint64)
	34	+	// Dissociate: UnmapNotify/DestroyNotify; the host emits WindowUnmapped if
	35	+	// mapped and drops the surface link. destroyed also frees the WindowID.
	36	+	Dissociate(slot Slot, destroyed bool)
	37	+	Title(slot Slot, title string) // changed only
	38	+	AppID(slot Slot, appID string) // changed only (WM_CLASS class)
	39	+	Parent(slot Slot, parent Slot) // 0 = none; after a WM_TRANSIENT_FOR change
	40	+	// Fullscreen forwards a fullscreen request (_NET_WM_STATE client message
	41	+	// or initial state); the host emits WindowFullscreenRequest.
	42	+	Fullscreen(slot Slot, on bool)
	43	+
	44	+	// OverrideMapped reports an override-redirect window that is mapped,
	45	+	// typed and paired with its wl_surface. Rect is in layout coordinates.
	46	+	OverrideMapped(slot Slot, xid uint32, surfaceID uint64, x, y, w, h int, noInput bool)
	47	+	// OverrideMoved reports a changed layout rect of a mapped override window.
	48	+	OverrideMoved(slot Slot, x, y, w, h int)
	49	+	// OverrideGone ends a mapped override window: unmapped or destroyed.
	50	+	OverrideGone(slot Slot)
	51	+	}
	52	+
	53	+	// fdSource is the display's event source for the X socket (*server.Source).
	54	+	type fdSource interface {
	55	+	SetWritable(on bool) error
	56	+	Remove()
	57	+	}

A internal/adapters/wayland/xwm/host_mock_test.go +611 -0

@@ -0,0 +1,611 @@
	1	+	// Code generated by mockery; DO NOT EDIT.
	2	+	// github.com/vektra/mockery
	3	+	// template: testify
	4	+
	5	+	package xwm
	6	+
	7	+	import (
	8	+	"github.com/bnema/neferwl/internal/ports"
	9	+	mock "github.com/stretchr/testify/mock"
	10	+	)
	11	+
	12	+	// newMockhost creates a new instance of mockhost. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
	13	+	// The first argument is typically a *testing.T value.
	14	+	func newMockhost(t interface {
	15	+	mock.TestingT
	16	+	Cleanup(func())
	17	+	}) *mockhost {
	18	+	if helper, ok := t.(interface{ Helper() }); ok {
	19	+	helper.Helper()
	20	+	}
	21	+
	22	+	mock := &mockhost{}
	23	+	mock.Mock.Test(t)
	24	+
	25	+	t.Cleanup(func() {
	26	+	if helper, ok := t.(interface{ Helper() }); ok {
	27	+	helper.Helper()
	28	+	}
	29	+	mock.AssertExpectations(t)
	30	+	})
	31	+
	32	+	return mock
	33	+	}
	34	+
	35	+	// mockhost is an autogenerated mock type for the host type
	36	+	type mockhost struct {
	37	+	mock.Mock
	38	+	}
	39	+
	40	+	type mockhost_Expecter struct {
	41	+	mock *mock.Mock
	42	+	}
	43	+
	44	+	func (_m mockhost) EXPECT() mockhost_Expecter {
	45	+	return &mockhost_Expecter{mock: &_m.Mock}
	46	+	}
	47	+
	48	+	// AppID provides a mock function for the type mockhost
	49	+	func (_mock *mockhost) AppID(slot Slot, appID string) {
	50	+	_mock.Called(slot, appID)
	51	+	return
	52	+	}
	53	+
	54	+	// mockhost_AppID_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'AppID'
	55	+	type mockhost_AppID_Call struct {
	56	+	*mock.Call
	57	+	}
	58	+
	59	+	// AppID is a helper method to define mock.On call
	60	+	// - slot Slot
	61	+	// - appID string
	62	+	func (_e mockhost_Expecter) AppID(slot any, appID any) mockhost_AppID_Call {
	63	+	return &mockhost_AppID_Call{Call: _e.mock.On("AppID", slot, appID)}
	64	+	}
	65	+
	66	+	func (_c mockhost_AppID_Call) Run(run func(slot Slot, appID string)) mockhost_AppID_Call {
	67	+	_c.Call.Run(func(args mock.Arguments) {
	68	+	var arg0 Slot
	69	+	if args[0] != nil {
	70	+	arg0 = args[0].(Slot)
	71	+	}
	72	+	var arg1 string
	73	+	if args[1] != nil {
	74	+	arg1 = args[1].(string)
	75	+	}
	76	+	run(
	77	+	arg0,
	78	+	arg1,
	79	+	)
	80	+	})
	81	+	return _c
	82	+	}
	83	+
	84	+	func (_c mockhost_AppID_Call) Return() mockhost_AppID_Call {
	85	+	_c.Call.Return()
	86	+	return _c
	87	+	}
	88	+
	89	+	func (_c mockhost_AppID_Call) RunAndReturn(run func(slot Slot, appID string)) mockhost_AppID_Call {
	90	+	_c.Run(run)
	91	+	return _c
	92	+	}
	93	+
	94	+	// Associate provides a mock function for the type mockhost
	95	+	func (_mock *mockhost) Associate(slot Slot, surfaceID uint64) {
	96	+	_mock.Called(slot, surfaceID)
	97	+	return
	98	+	}
	99	+
	100	+	// mockhost_Associate_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Associate'
	101	+	type mockhost_Associate_Call struct {
	102	+	*mock.Call
	103	+	}
	104	+
	105	+	// Associate is a helper method to define mock.On call
	106	+	// - slot Slot
	107	+	// - surfaceID uint64
	108	+	func (_e mockhost_Expecter) Associate(slot any, surfaceID any) mockhost_Associate_Call {
	109	+	return &mockhost_Associate_Call{Call: _e.mock.On("Associate", slot, surfaceID)}
	110	+	}
	111	+
	112	+	func (_c mockhost_Associate_Call) Run(run func(slot Slot, surfaceID uint64)) mockhost_Associate_Call {
	113	+	_c.Call.Run(func(args mock.Arguments) {
	114	+	var arg0 Slot
	115	+	if args[0] != nil {
	116	+	arg0 = args[0].(Slot)
	117	+	}
	118	+	var arg1 uint64
	119	+	if args[1] != nil {
	120	+	arg1 = args[1].(uint64)
	121	+	}
	122	+	run(
	123	+	arg0,
	124	+	arg1,
	125	+	)
	126	+	})
	127	+	return _c
	128	+	}
	129	+
	130	+	func (_c mockhost_Associate_Call) Return() mockhost_Associate_Call {
	131	+	_c.Call.Return()
	132	+	return _c
	133	+	}
	134	+
	135	+	func (_c mockhost_Associate_Call) RunAndReturn(run func(slot Slot, surfaceID uint64)) mockhost_Associate_Call {
	136	+	_c.Run(run)
	137	+	return _c
	138	+	}
	139	+
	140	+	// Created provides a mock function for the type mockhost
	141	+	func (_mock *mockhost) Created(slot Slot, xid uint32) ports.WindowID {
	142	+	ret := _mock.Called(slot, xid)
	143	+
	144	+	if len(ret) == 0 {
	145	+	panic("no return value specified for Created")
	146	+	}
	147	+
	148	+	var r0 ports.WindowID
	149	+	if returnFunc, ok := ret.Get(0).(func(Slot, uint32) ports.WindowID); ok {
	150	+	r0 = returnFunc(slot, xid)
	151	+	} else {
	152	+	r0 = ret.Get(0).(ports.WindowID)
	153	+	}
	154	+	return r0
	155	+	}
	156	+
	157	+	// mockhost_Created_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Created'
	158	+	type mockhost_Created_Call struct {
	159	+	*mock.Call
	160	+	}
	161	+
	162	+	// Created is a helper method to define mock.On call
	163	+	// - slot Slot
	164	+	// - xid uint32
	165	+	func (_e mockhost_Expecter) Created(slot any, xid any) mockhost_Created_Call {
	166	+	return &mockhost_Created_Call{Call: _e.mock.On("Created", slot, xid)}
	167	+	}
	168	+
	169	+	func (_c mockhost_Created_Call) Run(run func(slot Slot, xid uint32)) mockhost_Created_Call {
	170	+	_c.Call.Run(func(args mock.Arguments) {
	171	+	var arg0 Slot
	172	+	if args[0] != nil {
	173	+	arg0 = args[0].(Slot)
	174	+	}
	175	+	var arg1 uint32
	176	+	if args[1] != nil {
	177	+	arg1 = args[1].(uint32)
	178	+	}
	179	+	run(
	180	+	arg0,
	181	+	arg1,
	182	+	)
	183	+	})
	184	+	return _c
	185	+	}
	186	+
	187	+	func (_c mockhost_Created_Call) Return(windowID ports.WindowID) mockhost_Created_Call {
	188	+	_c.Call.Return(windowID)
	189	+	return _c
	190	+	}
	191	+
	192	+	func (_c mockhost_Created_Call) RunAndReturn(run func(slot Slot, xid uint32) ports.WindowID) mockhost_Created_Call {
	193	+	_c.Call.Return(run)
	194	+	return _c
	195	+	}
	196	+
	197	+	// Dissociate provides a mock function for the type mockhost
	198	+	func (_mock *mockhost) Dissociate(slot Slot, destroyed bool) {
	199	+	_mock.Called(slot, destroyed)
	200	+	return
	201	+	}
	202	+
	203	+	// mockhost_Dissociate_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Dissociate'
	204	+	type mockhost_Dissociate_Call struct {
	205	+	*mock.Call
	206	+	}
	207	+
	208	+	// Dissociate is a helper method to define mock.On call
	209	+	// - slot Slot
	210	+	// - destroyed bool
	211	+	func (_e mockhost_Expecter) Dissociate(slot any, destroyed any) mockhost_Dissociate_Call {
	212	+	return &mockhost_Dissociate_Call{Call: _e.mock.On("Dissociate", slot, destroyed)}
	213	+	}
	214	+
	215	+	func (_c mockhost_Dissociate_Call) Run(run func(slot Slot, destroyed bool)) mockhost_Dissociate_Call {
	216	+	_c.Call.Run(func(args mock.Arguments) {
	217	+	var arg0 Slot
	218	+	if args[0] != nil {
	219	+	arg0 = args[0].(Slot)
	220	+	}
	221	+	var arg1 bool
	222	+	if args[1] != nil {
	223	+	arg1 = args[1].(bool)
	224	+	}
	225	+	run(
	226	+	arg0,
	227	+	arg1,
	228	+	)
	229	+	})
	230	+	return _c
	231	+	}
	232	+
	233	+	func (_c mockhost_Dissociate_Call) Return() mockhost_Dissociate_Call {
	234	+	_c.Call.Return()
	235	+	return _c
	236	+	}
	237	+
	238	+	func (_c mockhost_Dissociate_Call) RunAndReturn(run func(slot Slot, destroyed bool)) mockhost_Dissociate_Call {
	239	+	_c.Run(run)
	240	+	return _c
	241	+	}
	242	+
	243	+	// Fullscreen provides a mock function for the type mockhost
	244	+	func (_mock *mockhost) Fullscreen(slot Slot, on bool) {
	245	+	_mock.Called(slot, on)
	246	+	return
	247	+	}
	248	+
	249	+	// mockhost_Fullscreen_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Fullscreen'
	250	+	type mockhost_Fullscreen_Call struct {
	251	+	*mock.Call
	252	+	}
	253	+
	254	+	// Fullscreen is a helper method to define mock.On call
	255	+	// - slot Slot
	256	+	// - on bool
	257	+	func (_e mockhost_Expecter) Fullscreen(slot any, on any) mockhost_Fullscreen_Call {
	258	+	return &mockhost_Fullscreen_Call{Call: _e.mock.On("Fullscreen", slot, on)}
	259	+	}
	260	+
	261	+	func (_c mockhost_Fullscreen_Call) Run(run func(slot Slot, on bool)) mockhost_Fullscreen_Call {
	262	+	_c.Call.Run(func(args mock.Arguments) {
	263	+	var arg0 Slot
	264	+	if args[0] != nil {
	265	+	arg0 = args[0].(Slot)
	266	+	}
	267	+	var arg1 bool
	268	+	if args[1] != nil {
	269	+	arg1 = args[1].(bool)
	270	+	}
	271	+	run(
	272	+	arg0,
	273	+	arg1,
	274	+	)
	275	+	})
	276	+	return _c
	277	+	}
	278	+
	279	+	func (_c mockhost_Fullscreen_Call) Return() mockhost_Fullscreen_Call {
	280	+	_c.Call.Return()
	281	+	return _c
	282	+	}
	283	+
	284	+	func (_c mockhost_Fullscreen_Call) RunAndReturn(run func(slot Slot, on bool)) mockhost_Fullscreen_Call {
	285	+	_c.Run(run)
	286	+	return _c
	287	+	}
	288	+
	289	+	// OverrideGone provides a mock function for the type mockhost
	290	+	func (_mock *mockhost) OverrideGone(slot Slot) {
	291	+	_mock.Called(slot)
	292	+	return
	293	+	}
	294	+
	295	+	// mockhost_OverrideGone_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OverrideGone'
	296	+	type mockhost_OverrideGone_Call struct {
	297	+	*mock.Call
	298	+	}
	299	+
	300	+	// OverrideGone is a helper method to define mock.On call
	301	+	// - slot Slot
	302	+	func (_e mockhost_Expecter) OverrideGone(slot any) mockhost_OverrideGone_Call {
	303	+	return &mockhost_OverrideGone_Call{Call: _e.mock.On("OverrideGone", slot)}
	304	+	}
	305	+
	306	+	func (_c mockhost_OverrideGone_Call) Run(run func(slot Slot)) mockhost_OverrideGone_Call {
	307	+	_c.Call.Run(func(args mock.Arguments) {
	308	+	var arg0 Slot
	309	+	if args[0] != nil {
	310	+	arg0 = args[0].(Slot)
	311	+	}
	312	+	run(
	313	+	arg0,
	314	+	)
	315	+	})
	316	+	return _c
	317	+	}
	318	+
	319	+	func (_c mockhost_OverrideGone_Call) Return() mockhost_OverrideGone_Call {
	320	+	_c.Call.Return()
	321	+	return _c
	322	+	}
	323	+
	324	+	func (_c mockhost_OverrideGone_Call) RunAndReturn(run func(slot Slot)) mockhost_OverrideGone_Call {
	325	+	_c.Run(run)
	326	+	return _c
	327	+	}
	328	+
	329	+	// OverrideMapped provides a mock function for the type mockhost
	330	+	func (_mock *mockhost) OverrideMapped(slot Slot, xid uint32, surfaceID uint64, x int, y int, w int, h int, noInput bool) {
	331	+	_mock.Called(slot, xid, surfaceID, x, y, w, h, noInput)
	332	+	return
	333	+	}
	334	+
	335	+	// mockhost_OverrideMapped_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OverrideMapped'
	336	+	type mockhost_OverrideMapped_Call struct {
	337	+	*mock.Call
	338	+	}
	339	+
	340	+	// OverrideMapped is a helper method to define mock.On call
	341	+	// - slot Slot
	342	+	// - xid uint32
	343	+	// - surfaceID uint64
	344	+	// - x int
	345	+	// - y int
	346	+	// - w int
	347	+	// - h int
	348	+	// - noInput bool
	349	+	func (_e mockhost_Expecter) OverrideMapped(slot any, xid any, surfaceID any, x any, y any, w any, h any, noInput any) mockhost_OverrideMapped_Call {
	350	+	return &mockhost_OverrideMapped_Call{Call: _e.mock.On("OverrideMapped", slot, xid, surfaceID, x, y, w, h, noInput)}
	351	+	}
	352	+
	353	+	func (_c mockhost_OverrideMapped_Call) Run(run func(slot Slot, xid uint32, surfaceID uint64, x int, y int, w int, h int, noInput bool)) mockhost_OverrideMapped_Call {
	354	+	_c.Call.Run(func(args mock.Arguments) {
	355	+	var arg0 Slot
	356	+	if args[0] != nil {
	357	+	arg0 = args[0].(Slot)
	358	+	}
	359	+	var arg1 uint32
	360	+	if args[1] != nil {
	361	+	arg1 = args[1].(uint32)
	362	+	}
	363	+	var arg2 uint64
	364	+	if args[2] != nil {
	365	+	arg2 = args[2].(uint64)
	366	+	}
	367	+	var arg3 int
	368	+	if args[3] != nil {
	369	+	arg3 = args[3].(int)
	370	+	}
	371	+	var arg4 int
	372	+	if args[4] != nil {
	373	+	arg4 = args[4].(int)
	374	+	}
	375	+	var arg5 int
	376	+	if args[5] != nil {
	377	+	arg5 = args[5].(int)
	378	+	}
	379	+	var arg6 int
	380	+	if args[6] != nil {
	381	+	arg6 = args[6].(int)
	382	+	}
	383	+	var arg7 bool
	384	+	if args[7] != nil {
	385	+	arg7 = args[7].(bool)
	386	+	}
	387	+	run(
	388	+	arg0,
	389	+	arg1,
	390	+	arg2,
	391	+	arg3,
	392	+	arg4,
	393	+	arg5,
	394	+	arg6,
	395	+	arg7,
	396	+	)
	397	+	})
	398	+	return _c
	399	+	}
	400	+
	401	+	func (_c mockhost_OverrideMapped_Call) Return() mockhost_OverrideMapped_Call {
	402	+	_c.Call.Return()
	403	+	return _c
	404	+	}
	405	+
	406	+	func (_c mockhost_OverrideMapped_Call) RunAndReturn(run func(slot Slot, xid uint32, surfaceID uint64, x int, y int, w int, h int, noInput bool)) mockhost_OverrideMapped_Call {
	407	+	_c.Run(run)
	408	+	return _c
	409	+	}
	410	+
	411	+	// OverrideMoved provides a mock function for the type mockhost
	412	+	func (_mock *mockhost) OverrideMoved(slot Slot, x int, y int, w int, h int) {
	413	+	_mock.Called(slot, x, y, w, h)
	414	+	return
	415	+	}
	416	+
	417	+	// mockhost_OverrideMoved_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OverrideMoved'
	418	+	type mockhost_OverrideMoved_Call struct {
	419	+	*mock.Call
	420	+	}
	421	+
	422	+	// OverrideMoved is a helper method to define mock.On call
	423	+	// - slot Slot
	424	+	// - x int
	425	+	// - y int
	426	+	// - w int
	427	+	// - h int
	428	+	func (_e mockhost_Expecter) OverrideMoved(slot any, x any, y any, w any, h any) mockhost_OverrideMoved_Call {
	429	+	return &mockhost_OverrideMoved_Call{Call: _e.mock.On("OverrideMoved", slot, x, y, w, h)}
	430	+	}
	431	+
	432	+	func (_c mockhost_OverrideMoved_Call) Run(run func(slot Slot, x int, y int, w int, h int)) mockhost_OverrideMoved_Call {
	433	+	_c.Call.Run(func(args mock.Arguments) {
	434	+	var arg0 Slot
	435	+	if args[0] != nil {
	436	+	arg0 = args[0].(Slot)
	437	+	}
	438	+	var arg1 int
	439	+	if args[1] != nil {
	440	+	arg1 = args[1].(int)
	441	+	}
	442	+	var arg2 int
	443	+	if args[2] != nil {
	444	+	arg2 = args[2].(int)
	445	+	}
	446	+	var arg3 int
	447	+	if args[3] != nil {
	448	+	arg3 = args[3].(int)
	449	+	}
	450	+	var arg4 int
	451	+	if args[4] != nil {
	452	+	arg4 = args[4].(int)
	453	+	}
	454	+	run(
	455	+	arg0,
	456	+	arg1,
	457	+	arg2,
	458	+	arg3,
	459	+	arg4,
	460	+	)
	461	+	})
	462	+	return _c
	463	+	}
	464	+
	465	+	func (_c mockhost_OverrideMoved_Call) Return() mockhost_OverrideMoved_Call {
	466	+	_c.Call.Return()
	467	+	return _c
	468	+	}
	469	+
	470	+	func (_c mockhost_OverrideMoved_Call) RunAndReturn(run func(slot Slot, x int, y int, w int, h int)) mockhost_OverrideMoved_Call {
	471	+	_c.Run(run)
	472	+	return _c
	473	+	}
	474	+
	475	+	// Parent provides a mock function for the type mockhost
	476	+	func (_mock *mockhost) Parent(slot Slot, parent Slot) {
	477	+	_mock.Called(slot, parent)
	478	+	return
	479	+	}
	480	+
	481	+	// mockhost_Parent_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Parent'
	482	+	type mockhost_Parent_Call struct {
	483	+	*mock.Call
	484	+	}
	485	+
	486	+	// Parent is a helper method to define mock.On call
	487	+	// - slot Slot
	488	+	// - parent Slot
	489	+	func (_e mockhost_Expecter) Parent(slot any, parent any) mockhost_Parent_Call {
	490	+	return &mockhost_Parent_Call{Call: _e.mock.On("Parent", slot, parent)}
	491	+	}
	492	+
	493	+	func (_c mockhost_Parent_Call) Run(run func(slot Slot, parent Slot)) mockhost_Parent_Call {
	494	+	_c.Call.Run(func(args mock.Arguments) {
	495	+	var arg0 Slot
	496	+	if args[0] != nil {
	497	+	arg0 = args[0].(Slot)
	498	+	}
	499	+	var arg1 Slot
	500	+	if args[1] != nil {
	501	+	arg1 = args[1].(Slot)
	502	+	}
	503	+	run(
	504	+	arg0,
	505	+	arg1,
	506	+	)
	507	+	})
	508	+	return _c
	509	+	}
	510	+
	511	+	func (_c mockhost_Parent_Call) Return() mockhost_Parent_Call {
	512	+	_c.Call.Return()
	513	+	return _c
	514	+	}
	515	+
	516	+	func (_c mockhost_Parent_Call) RunAndReturn(run func(slot Slot, parent Slot)) mockhost_Parent_Call {
	517	+	_c.Run(run)
	518	+	return _c
	519	+	}
	520	+
	521	+	// Ready provides a mock function for the type mockhost
	522	+	func (_mock *mockhost) Ready(slot Slot, info WindowInfo) {
	523	+	_mock.Called(slot, info)
	524	+	return
	525	+	}
	526	+
	527	+	// mockhost_Ready_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Ready'
	528	+	type mockhost_Ready_Call struct {
	529	+	*mock.Call
	530	+	}
	531	+
	532	+	// Ready is a helper method to define mock.On call
	533	+	// - slot Slot
	534	+	// - info WindowInfo
	535	+	func (_e mockhost_Expecter) Ready(slot any, info any) mockhost_Ready_Call {
	536	+	return &mockhost_Ready_Call{Call: _e.mock.On("Ready", slot, info)}
	537	+	}
	538	+
	539	+	func (_c mockhost_Ready_Call) Run(run func(slot Slot, info WindowInfo)) mockhost_Ready_Call {
	540	+	_c.Call.Run(func(args mock.Arguments) {
	541	+	var arg0 Slot
	542	+	if args[0] != nil {
	543	+	arg0 = args[0].(Slot)
	544	+	}
	545	+	var arg1 WindowInfo
	546	+	if args[1] != nil {
	547	+	arg1 = args[1].(WindowInfo)
	548	+	}
	549	+	run(
	550	+	arg0,
	551	+	arg1,
	552	+	)
	553	+	})
	554	+	return _c
	555	+	}
	556	+
	557	+	func (_c mockhost_Ready_Call) Return() mockhost_Ready_Call {
	558	+	_c.Call.Return()
	559	+	return _c
	560	+	}
	561	+
	562	+	func (_c mockhost_Ready_Call) RunAndReturn(run func(slot Slot, info WindowInfo)) mockhost_Ready_Call {
	563	+	_c.Run(run)
	564	+	return _c
	565	+	}
	566	+
	567	+	// Title provides a mock function for the type mockhost
	568	+	func (_mock *mockhost) Title(slot Slot, title string) {
	569	+	_mock.Called(slot, title)
	570	+	return
	571	+	}
	572	+
	573	+	// mockhost_Title_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Title'
	574	+	type mockhost_Title_Call struct {
	575	+	*mock.Call
	576	+	}
	577	+
	578	+	// Title is a helper method to define mock.On call
	579	+	// - slot Slot
	580	+	// - title string
	581	+	func (_e mockhost_Expecter) Title(slot any, title any) mockhost_Title_Call {
	582	+	return &mockhost_Title_Call{Call: _e.mock.On("Title", slot, title)}
	583	+	}
	584	+
	585	+	func (_c mockhost_Title_Call) Run(run func(slot Slot, title string)) mockhost_Title_Call {
	586	+	_c.Call.Run(func(args mock.Arguments) {
	587	+	var arg0 Slot
	588	+	if args[0] != nil {
	589	+	arg0 = args[0].(Slot)
	590	+	}
	591	+	var arg1 string
	592	+	if args[1] != nil {
	593	+	arg1 = args[1].(string)
	594	+	}
	595	+	run(
	596	+	arg0,
	597	+	arg1,
	598	+	)
	599	+	})
	600	+	return _c
	601	+	}
	602	+
	603	+	func (_c mockhost_Title_Call) Return() mockhost_Title_Call {
	604	+	_c.Call.Return()
	605	+	return _c
	606	+	}
	607	+
	608	+	func (_c mockhost_Title_Call) RunAndReturn(run func(slot Slot, title string)) mockhost_Title_Call {
	609	+	_c.Run(run)
	610	+	return _c
	611	+	}

A internal/adapters/wayland/xwm/mapflow.go +355 -0

@@ -0,0 +1,355 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"bnema.dev/xturbo"
	5	+	"bnema.dev/xturbo/xproto"
	6	+	)
	7	+
	8	+	// ICCCM WM_STATE values.
	9	+	const (
	10	+	wmStateWithdrawn uint32 = 0
	11	+	wmStateNormal uint32 = 1
	12	+	)
	13	+
	14	+	// _NET_WM_STATE client message actions.
	15	+	const (
	16	+	netStateRemove = 0
	17	+	netStateAdd = 1
	18	+	netStateToggle = 2
	19	+	)
	20	+
	21	+	// beginMap starts the map flow of a managed window: every property, the
	22	+	// geometry and MapWindow go out in one batch (wlroots order). Also called by
	23	+	// Attach for windows mapped before it.
	24	+	func (x *XWM) beginMap(s Slot) {
	25	+	rec := x.tab.rec(s)
	26	+	if rec.kind != kindManaged \|\| rec.mapping {
	27	+	return
	28	+	}
	29	+	rec.mapping, rec.ready = true, false
	30	+	rec.hasNetName = false
	31	+	rec.pending = propGeom
	32	+	xid := rec.xid
	33	+	for idx := 0; idx < propCount; idx++ {
	34	+	x.requestProp(s, idx)
	35	+	}
	36	+	b := x.conn.Buf()
	37	+	x.expect(xproto.GetGeometry(b, xproto.Drawable(xid)), kindGeom, x.tab.tag(s), 0)
	38	+	xproto.MapWindow(b, xproto.Window(xid))
	39	+	}
	40	+
	41	+	func (x XWM) onMapRequest(ev xturbo.Event) {
	42	+	if s := x.tab.lookup(uint32(xproto.MapRequestOf(ev).Window())); s != 0 {
	43	+	x.beginMap(s)
	44	+	}
	45	+	}
	46	+
	47	+	func (x XWM) onMapNotify(ev xturbo.Event) {
	48	+	s := x.tab.lookup(uint32(xproto.MapNotifyOf(ev).Window()))
	49	+	if s == 0 {
	50	+	return
	51	+	}
	52	+	rec := x.tab.rec(s)
	53	+	again := rec.mapped
	54	+	rec.mapped = true
	55	+	if rec.kind == kindUnmanaged && !again {
	56	+	x.requestOverrideType(s)
	57	+	}
	58	+	}
	59	+
	60	+	// onUnmapNotify ends the mapped life of a managed window; a later MapRequest
	61	+	// starts over and re-reads the properties. Synthetic events (ICCCM unmap
	62	+	// requests) are not an unmap.
	63	+	func (x XWM) onUnmapNotify(ev xturbo.Event) {
	64	+	if ev.SendEvent {
	65	+	return
	66	+	}
	67	+	s := x.tab.lookup(uint32(xproto.UnmapNotifyOf(ev).Window()))
	68	+	if s == 0 {
	69	+	return
	70	+	}
	71	+	rec := x.tab.rec(s)
	72	+	rec.mapped = false
	73	+	if rec.kind == kindUnmanaged {
	74	+	x.overrideUnmapped(s, rec)
	75	+	return
	76	+	}
	77	+	if rec.kind != kindManaged {
	78	+	return
	79	+	}
	80	+	wasMapping := rec.mapping
	81	+	rec.ready, rec.mapping, rec.pending, rec.sized = false, false, 0, false
	82	+	rec.gen++ // replies still in flight for this map name a dead tag
	83	+	if rec.gen == 0 {
	84	+	rec.gen = 1
	85	+	}
	86	+	rec.pend.dirty = false
	87	+	rec.serial, rec.surface = 0, 0
	88	+	if wasMapping {
	89	+	xid := rec.xid
	90	+	x.setProp32Typed(xid, atomWMState, x.atoms[atomWMState], []uint32{wmStateWithdrawn, 0})
	91	+	xproto.DeleteProperty(x.conn.Buf(), xproto.Window(xid), xproto.Atom(x.atoms[atomNetWMState]))
	92	+	}
	93	+	x.dropWindow(s)
	94	+	if rec.id != 0 {
	95	+	x.host.Dissociate(s, false)
	96	+	}
	97	+	}
	98	+
	99	+	// setProp32Typed is setProp32 with an explicit property type atom.
	100	+	func (x *XWM) setProp32Typed(win uint32, prop int, typ uint32, vals []uint32) {
	101	+	x.setProp32(win, prop, xproto.Atom(typ), vals)
	102	+	}
	103	+
	104	+	// checkReady fires Ready once every awaited reply is in.
	105	+	func (x *XWM) checkReady(s Slot) {
	106	+	rec := x.tab.rec(s)
	107	+	if rec == nil \|\| rec.pending != 0 \|\| rec.ready \|\| !rec.mapping \|\| rec.kind != kindManaged \|\| x.host == nil {
	108	+	return
	109	+	}
	110	+	rec.ready = true
	111	+	x.classify(rec)
	112	+	info := x.info(s)
	113	+	xid := rec.xid
	114	+
	115	+	var state [2]uint32
	116	+	n := 0
	117	+	if rec.modal {
	118	+	state[n] = x.atoms[atomNetWMStateModal]
	119	+	n++
	120	+	}
	121	+	if rec.fullscreen {
	122	+	state[n] = x.atoms[atomNetWMStateFullscreen]
	123	+	n++
	124	+	}
	125	+	x.setProp32(xid, atomNetWMState, xproto.AtomAtom, state[:n])
	126	+	x.setProp32Typed(xid, atomWMState, x.atoms[atomWMState], []uint32{wmStateNormal, 0})
	127	+	x.addClient(xid)
	128	+
	129	+	x.host.Ready(s, info)
	130	+	x.tryPair(s)
	131	+	}
	132	+
	133	+	// info is what the host learns when a window is ready.
	134	+	func (x *XWM) info(s Slot) WindowInfo {
	135	+	rec := x.tab.rec(s)
	136	+	parent := x.managedSlot(rec.transient)
	137	+	info := WindowInfo{
	138	+	PID: int(rec.pid),
	139	+	Floating: rec.floating,
	140	+	Parent: parent,
	141	+	Modal: rec.modal,
	142	+	Fullscreen: rec.fullscreen,
	143	+	Title: rec.title,
	144	+	AppID: rec.class,
	145	+	}
	146	+	if info.Floating \|\| rec.sized {
	147	+	info.Width, info.Height = int(rec.w), int(rec.h)
	148	+	}
	149	+	return info
	150	+	}
	151	+
	152	+	func (x XWM) onGeomReply(s Slot, rec record, r *xturbo.Reply) {
	153	+	if g, ok := xproto.ParseGetGeometryReply(r.Raw); ok {
	154	+	rec.x, rec.y, rec.w, rec.h = int32(g.X()), int32(g.Y()), uint32(g.Width()), uint32(g.Height())
	155	+	}
	156	+	rec.pending &^= propGeom
	157	+	x.checkReady(s)
	158	+	}
	159	+
	160	+	// onClientMessage handles WL_SURFACE_SERIAL (pairing), the legacy
	161	+	// WL_SURFACE_ID (counted, ignored) and _NET_WM_STATE requests.
	162	+	func (x XWM) onClientMessage(ev xturbo.Event) {
	163	+	e := xproto.ClientMessageOf(ev)
	164	+	if e.Format() != 32 {
	165	+	return
	166	+	}
	167	+	typ := uint32(e.Type())
	168	+	switch typ {
	169	+	case x.atoms[atomWLSurfaceSerial]:
	170	+	s := x.tab.lookup(uint32(e.Window()))
	171	+	if s == 0 {
	172	+	return
	173	+	}
	174	+	rec := x.tab.rec(s)
	175	+	if rec.serial != 0 {
	176	+	x.log.Debug().Uint32("xid", rec.xid).Msg("duplicate WL_SURFACE_SERIAL ignored")
	177	+	return
	178	+	}
	179	+	d := e.Data().Data32()
	180	+	rec.serial = uint64(d[1])<<32 \| uint64(d[0])
	181	+	x.tryPair(s)
	182	+	case x.atoms[atomWLSurfaceID]:
	183	+	x.stats.LegacyID++
	184	+	if x.stats.LegacyID == 1 {
	185	+	x.log.Warn().Msg("WL_SURFACE_ID received: Xwayland did not bind xwayland_shell_v1, window ignored")
	186	+	}
	187	+	case x.atoms[atomNetWMState]:
	188	+	x.onNetWMState(e)
	189	+	case x.atoms[atomWMChangeState]:
	190	+	// Iconify requests are ignored: windows stay mapped.
	191	+	}
	192	+	}
	193	+
	194	+	// onNetWMState forwards fullscreen requests to the host and records them; the
	195	+	// property itself is written when core answers with a configure.
	196	+	func (x *XWM) onNetWMState(e xproto.ClientMessageEvent) {
	197	+	s := x.tab.lookup(uint32(e.Window()))
	198	+	if s == 0 {
	199	+	return
	200	+	}
	201	+	rec := x.tab.rec(s)
	202	+	if rec.kind != kindManaged {
	203	+	return
	204	+	}
	205	+	d := e.Data().Data32()
	206	+	apply := func(cur bool) bool {
	207	+	switch d[0] {
	208	+	case netStateRemove:
	209	+	return false
	210	+	case netStateAdd:
	211	+	return true
	212	+	case netStateToggle:
	213	+	return !cur
	214	+	}
	215	+	return cur
	216	+	}
	217	+	for _, a := range d[1:3] {
	218	+	switch {
	219	+	case a == 0:
	220	+	case a == x.atoms[atomNetWMStateModal]:
	221	+	rec.modal = apply(rec.modal)
	222	+	case a == x.atoms[atomNetWMStateFullscreen]:
	223	+	on := apply(rec.fullscreen)
	224	+	if on == rec.fullscreen {
	225	+	continue
	226	+	}
	227	+	rec.fullscreen = on
	228	+	if rec.ready {
	229	+	x.host.Fullscreen(s, on)
	230	+	rec = x.tab.rec(s)
	231	+	}
	232	+	}
	233	+	}
	234	+	}
	235	+
	236	+	// onReparentNotify keeps the table to root's direct children: a window moved
	237	+	// away is forgotten, one moved into root is treated as newly created.
	238	+	func (x XWM) onReparentNotify(ev xturbo.Event) {
	239	+	e := xproto.ReparentNotifyOf(ev)
	240	+	xid := uint32(e.Window())
	241	+	if xid == x.wmWin {
	242	+	return
	243	+	}
	244	+	s := x.tab.lookup(xid)
	245	+	if uint32(e.Parent()) != x.root {
	246	+	if s != 0 {
	247	+	x.forgetWindow(s)
	248	+	}
	249	+	return
	250	+	}
	251	+	if s != 0 {
	252	+	return
	253	+	}
	254	+	s = x.insert(xid)
	255	+	if s == 0 {
	256	+	return
	257	+	}
	258	+	rec := x.tab.rec(s)
	259	+	rec.x, rec.y = int32(e.X()), int32(e.Y())
	260	+	if e.OverrideRedirect() {
	261	+	rec.kind = kindUnmanaged
	262	+	x.stats.UnmanagedSeen++
	263	+	return
	264	+	}
	265	+	if x.host != nil {
	266	+	x.adopt(s)
	267	+	}
	268	+	}
	269	+
	270	+	// tryPair links the window to the wl_surface carrying its serial, once both
	271	+	// are known and the window is ready (the host maps on the surface's first
	272	+	// buffer, so it must know the window's info by then). Unmanaged windows keep
	273	+	// the surface but are never associated.
	274	+	func (x *XWM) tryPair(s Slot) {
	275	+	rec := x.tab.rec(s)
	276	+	if rec.serial == 0 \|\| rec.surface != 0 {
	277	+	return
	278	+	}
	279	+	if rec.kind == kindManaged && !rec.ready {
	280	+	return
	281	+	}
	282	+	for i := 0; i < x.unpairedN; i++ {
	283	+	if x.unpaired[i].serial != rec.serial {
	284	+	continue
	285	+	}
	286	+	rec.surface = x.unpaired[i].surface
	287	+	x.unpairedN--
	288	+	x.unpaired[i] = x.unpaired[x.unpairedN]
	289	+	if rec.kind == kindManaged {
	290	+	x.log.Debug().Uint32("xid", rec.xid).Uint64("surface", rec.surface).Msg("x11 window paired")
	291	+	x.host.Associate(s, rec.surface)
	292	+	} else {
	293	+	x.overrideMapped(s, rec)
	294	+	}
	295	+	return
	296	+	}
	297	+	}
	298	+
	299	+	// SetSerial records the serial of a wl_surface (xwayland_surface_v1.set_serial)
	300	+	// and pairs it with the window announcing the same serial.
	301	+	func (x *XWM) SetSerial(surfaceID uint64, serial uint64) {
	302	+	if serial == 0 \|\| x.closed {
	303	+	return
	304	+	}
	305	+	for i := 0; i < x.unpairedN; i++ {
	306	+	if x.unpaired[i].serial == serial {
	307	+	x.unpaired[i].surface = surfaceID
	308	+	x.pairSerial(serial)
	309	+	return
	310	+	}
	311	+	}
	312	+	if x.unpairedN == unpairedCap {
	313	+	copy(x.unpaired[:], x.unpaired[1:])
	314	+	x.unpairedN--
	315	+	if !x.warnedUnpaired {
	316	+	x.warnedUnpaired = true
	317	+	x.log.Warn().Msg("too many unpaired surfaces, dropping the oldest")
	318	+	}
	319	+	}
	320	+	x.unpaired[x.unpairedN] = struct{ serial, surface uint64 }{serial, surfaceID}
	321	+	x.unpairedN++
	322	+	x.pairSerial(serial)
	323	+	}
	324	+
	325	+	// pairSerial offers a newly known surface serial to the windows.
	326	+	func (x *XWM) pairSerial(serial uint64) {
	327	+	for i := range x.tab.recs {
	328	+	if r := &x.tab.recs[i]; r.kind != kindFree && r.serial == serial && r.surface == 0 {
	329	+	x.tryPair(Slot(i + 1))
	330	+	break
	331	+	}
	332	+	}
	333	+	x.wake()
	334	+	}
	335	+
	336	+	// SurfaceGone forgets a destroyed wl_surface.
	337	+	func (x *XWM) SurfaceGone(surfaceID uint64) {
	338	+	for i := 0; i < x.unpairedN; i++ {
	339	+	if x.unpaired[i].surface == surfaceID {
	340	+	x.unpairedN--
	341	+	x.unpaired[i] = x.unpaired[x.unpairedN]
	342	+	break
	343	+	}
	344	+	}
	345	+	for i := range x.tab.recs {
	346	+	if r := &x.tab.recs[i]; r.kind != kindFree && r.surface == surfaceID {
	347	+	r.surface = 0
	348	+	if r.kind == kindUnmanaged && r.ovPaired {
	349	+	r.ovPaired = false
	350	+	x.host.OverrideGone(Slot(i + 1))
	351	+	}
	352	+	}
	353	+	}
	354	+	x.wake()
	355	+	}

A internal/adapters/wayland/xwm/mapflow_test.go +779 -0

@@ -0,0 +1,779 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"context"
	5	+	"encoding/binary"
	6	+	"testing"
	7	+
	8	+	"bnema.dev/xturbo"
	9	+	"bnema.dev/xturbo/xproto"
	10	+	"github.com/bnema/neferwl/internal/ports"
	11	+	"github.com/stretchr/testify/mock"
	12	+	"github.com/stretchr/testify/require"
	13	+	)
	14	+
	15	+	// harness bundles an attached XWM, its peer and the host mock.
	16	+	type harness struct {
	17	+	t *testing.T
	18	+	x *XWM
	19	+	p *xpeer
	20	+	h *mockhost
	21	+
	22	+	ready map[uint32]WindowInfo // by xid, filled by Ready
	23	+	next ports.WindowID
	24	+	}
	25	+
	26	+	func newHarness(t testing.T, mutate func(p xpeer)) *harness {
	27	+	t.Helper()
	28	+	x, p := bootPeer(t, mutate)
	29	+	hs := &harness{t: t, x: x, p: p, h: newMockhost(t), ready: map[uint32]WindowInfo{}}
	30	+	src := newMockfdSource(t)
	31	+	src.EXPECT().Remove().Maybe()
	32	+	src.EXPECT().SetWritable(mock.Anything).Return(nil).Maybe()
	33	+	post, _ := newPost()
	34	+	x.attach(src, hs.h, post)
	35	+	return hs
	36	+	}
	37	+
	38	+	func (hs *harness) expectCreated(win uint32) {
	39	+	hs.next++
	40	+	hs.h.EXPECT().Created(mock.Anything, win).Return(hs.next).Once()
	41	+	}
	42	+
	43	+	func (hs *harness) expectReady(win uint32) {
	44	+	hs.h.EXPECT().Ready(mock.Anything, mock.Anything).Run(func(_ Slot, info WindowInfo) {
	45	+	hs.ready[win] = info
	46	+	}).Once()
	47	+	}
	48	+
	49	+	func (hs *harness) create(win uint32) Slot {
	50	+	hs.t.Helper()
	51	+	hs.expectCreated(win)
	52	+	hs.p.createNotify(win, false)
	53	+	readUntil(hs.t, hs.x, func() bool { return hs.x.tab.lookup(win) != 0 })
	54	+	return hs.x.tab.lookup(win)
	55	+	}
	56	+
	57	+	// mapAndWait creates and maps win and waits for Ready.
	58	+	func (hs *harness) mapAndWait(win uint32) Slot {
	59	+	hs.t.Helper()
	60	+	s := hs.create(win)
	61	+	hs.expectReady(win)
	62	+	hs.p.mapRequest(win)
	63	+	readUntil(hs.t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	64	+	return s
	65	+	}
	66	+
	67	+	func (hs *harness) str(win uint32, atom string, typ uint32, s string) {
	68	+	hs.p.setProp(win, hs.p.atom(atom), typ, 8, []byte(s))
	69	+	}
	70	+
	71	+	func (hs *harness) words(win uint32, atom string, typ uint32, w ...uint32) {
	72	+	hs.p.setProp(win, hs.p.atom(atom), typ, 32, le32(w...))
	73	+	}
	74	+
	75	+	func (hs *harness) atoms(win uint32, atom string, names ...string) {
	76	+	var w []uint32
	77	+	for _, n := range names {
	78	+	w = append(w, hs.p.atom(n))
	79	+	}
	80	+	hs.words(win, atom, uint32(xproto.AtomAtom), w...)
	81	+	}
	82	+
	83	+	func (hs *harness) classic(win uint32) {
	84	+	hs.p.setProp(win, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("inst\x00Class\x00"))
	85	+	hs.str(win, "_NET_WM_NAME", hs.p.atom("UTF8_STRING"), "net title")
	86	+	hs.p.setProp(win, uint32(xproto.AtomWmName), uint32(xproto.AtomString), 8, []byte("old title"))
	87	+	hs.words(win, "_NET_WM_PID", uint32(xproto.AtomCardinal), 4242)
	88	+	hs.p.set(func(p *xpeer) { p.geoms[win] = xpeerGeom{w: 300, h: 200} })
	89	+	}
	90	+
	91	+	func (hs *harness) count(match func(r xpeerReq) bool) int {
	92	+	n := 0
	93	+	for _, r := range hs.p.requests() {
	94	+	if match(r) {
	95	+	n++
	96	+	}
	97	+	}
	98	+	return n
	99	+	}
	100	+
	101	+	func (hs *harness) waitMap(win uint32) {
	102	+	hs.t.Helper()
	103	+	readUntil(hs.t, hs.x, func() bool {
	104	+	return hs.count(func(r xpeerReq) bool { return r.major == opMapWindow && r.u32(4) == win }) > 0
	105	+	})
	106	+	}
	107	+
	108	+	func TestMapFlowBatchesRequestsAndReadyFiresOnce(t *testing.T) {
	109	+	hs := newHarness(t, nil)
	110	+	const win = 0x500001
	111	+	hs.classic(win)
	112	+	hs.create(win)
	113	+	base := len(hs.p.requests())
	114	+
	115	+	hs.p.holdReplies()
	116	+	hs.p.mapRequest(win)
	117	+	hs.expectReady(win)
	118	+	hs.waitMap(win)
	119	+
	120	+	reqs := hs.p.requests()[base:]
	121	+	want := []uint32{
	122	+	uint32(xproto.AtomWmClass), uint32(xproto.AtomWmName), hs.p.atom("_NET_WM_NAME"), uint32(xproto.AtomWmHints),
	123	+	uint32(xproto.AtomWmNormalHints), hs.p.atom("WM_PROTOCOLS"), uint32(xproto.AtomWmTransientFor),
	124	+	hs.p.atom("_NET_WM_WINDOW_TYPE"), hs.p.atom("_NET_WM_STATE"), hs.p.atom("_NET_WM_PID"),
	125	+	}
	126	+	require.GreaterOrEqual(t, len(reqs), len(want)+2)
	127	+	for i, a := range want {
	128	+	require.EqualValues(t, opGetProperty, reqs[i].major, i)
	129	+	require.Equal(t, uint32(win), reqs[i].u32(4))
	130	+	require.Equal(t, a, reqs[i].u32(8), i)
	131	+	require.EqualValues(t, 1024, reqs[i].u32(20), "long length: one 4 KiB read")
	132	+	}
	133	+	require.EqualValues(t, opGetGeometry, reqs[len(want)].major)
	134	+	require.EqualValues(t, opMapWindow, reqs[len(want)+1].major, "MapWindow in the same batch")
	135	+
	136	+	hs.p.release() // every reply arrives after MapWindow went out
	137	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	138	+	info := hs.ready[win]
	139	+	require.Equal(t, WindowInfo{PID: 4242, Title: "net title", AppID: "Class"}, info, "_NET_WM_NAME wins, class is the second string")
	140	+
	141	+	state, ok := hs.p.prop(win, "WM_STATE")
	142	+	require.True(t, ok)
	143	+	require.Equal(t, []uint32{1, 0}, atomsOf(state))
	144	+	list, ok := hs.p.prop(peerRoot, "_NET_CLIENT_LIST")
	145	+	require.True(t, ok)
	146	+	require.Equal(t, []uint32{win}, atomsOf(list))
	147	+	}
	148	+
	149	+	func TestMapFlowFloatingAndModal(t *testing.T) {
	150	+	hint := func(minw, minh, maxw, maxh uint32) []byte {
	151	+	return le32(hintMinSize\|hintMaxSize, 0, 0, 0, 0, minw, minh, maxw, maxh, 0, 0, 0, 0, 0, 0, 0, 0, 0)
	152	+	}
	153	+	cases := []struct {
	154	+	name string
	155	+	setup func(hs *harness, win uint32)
	156	+	want func(info WindowInfo)
	157	+	}{
	158	+	{"dialog type", func(hs *harness, w uint32) {
	159	+	hs.atoms(w, "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_DIALOG")
	160	+	}, func(i WindowInfo) {
	161	+	require.True(t, i.Floating)
	162	+	require.Equal(t, 300, i.Width)
	163	+	require.Equal(t, 200, i.Height)
	164	+	}},
	165	+	{"utility type", func(hs *harness, w uint32) {
	166	+	hs.atoms(w, "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_UTILITY")
	167	+	}, func(i WindowInfo) { require.True(t, i.Floating) }},
	168	+	{"splash type", func(hs *harness, w uint32) {
	169	+	hs.atoms(w, "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_SPLASH")
	170	+	}, func(i WindowInfo) { require.True(t, i.Floating) }},
	171	+	{"normal type", func(hs *harness, w uint32) {
	172	+	hs.atoms(w, "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_NORMAL")
	173	+	}, func(i WindowInfo) { require.False(t, i.Floating); require.Zero(t, i.Width) }},
	174	+	{"fixed size", func(hs *harness, w uint32) {
	175	+	hs.p.setProp(w, uint32(xproto.AtomWmNormalHints), uint32(xproto.AtomWmSizeHints), 32, hint(200, 100, 200, 100))
	176	+	}, func(i WindowInfo) { require.True(t, i.Floating) }},
	177	+	{"resizable", func(hs *harness, w uint32) {
	178	+	hs.p.setProp(w, uint32(xproto.AtomWmNormalHints), uint32(xproto.AtomWmSizeHints), 32, hint(100, 100, 800, 600))
	179	+	}, func(i WindowInfo) { require.False(t, i.Floating) }},
	180	+	{"modal", func(hs *harness, w uint32) {
	181	+	hs.atoms(w, "_NET_WM_STATE", "_NET_WM_STATE_MODAL")
	182	+	}, func(i WindowInfo) { require.True(t, i.Modal); require.False(t, i.Fullscreen) }},
	183	+	{"fullscreen at map", func(hs *harness, w uint32) {
	184	+	hs.atoms(w, "_NET_WM_STATE", "_NET_WM_STATE_FULLSCREEN")
	185	+	}, func(i WindowInfo) { require.True(t, i.Fullscreen) }},
	186	+	}
	187	+	for _, c := range cases {
	188	+	t.Run(c.name, func(t *testing.T) {
	189	+	hs := newHarness(t, nil)
	190	+	const win = 0x500001
	191	+	hs.classic(win)
	192	+	c.setup(hs, win)
	193	+	hs.mapAndWait(win)
	194	+	c.want(hs.ready[win])
	195	+	})
	196	+	}
	197	+	}
	198	+
	199	+	func TestMapFlowTransientForManagedWindowFloats(t *testing.T) {
	200	+	hs := newHarness(t, nil)
	201	+	const parent, child = 0x500001, 0x500002
	202	+	hs.classic(parent)
	203	+	ps := hs.mapAndWait(parent)
	204	+	hs.classic(child)
	205	+	hs.p.setProp(child, uint32(xproto.AtomWmTransientFor), uint32(xproto.AtomWindow), 32, le32(parent))
	206	+	hs.mapAndWait(child)
	207	+	require.True(t, hs.ready[child].Floating)
	208	+	require.Equal(t, ps, hs.ready[child].Parent)
	209	+	}
	210	+
	211	+	func TestMapFlowTransientForUnknownWindowIsNotAParent(t *testing.T) {
	212	+	hs := newHarness(t, nil)
	213	+	const win = 0x500001
	214	+	hs.classic(win)
	215	+	hs.p.setProp(win, uint32(xproto.AtomWmTransientFor), uint32(xproto.AtomWindow), 32, le32(0x777777))
	216	+	hs.mapAndWait(win)
	217	+	require.Zero(t, hs.ready[win].Parent)
	218	+	require.False(t, hs.ready[win].Floating)
	219	+	}
	220	+
	221	+	func TestMapFlowClassFallsBackToInstance(t *testing.T) {
	222	+	hs := newHarness(t, nil)
	223	+	const win = 0x500001
	224	+	hs.classic(win)
	225	+	hs.p.setProp(win, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("onlyinstance\x00"))
	226	+	hs.mapAndWait(win)
	227	+	require.Equal(t, "onlyinstance", hs.ready[win].AppID)
	228	+	}
	229	+
	230	+	func TestMapFlowTitleFallsBackToWMName(t *testing.T) {
	231	+	hs := newHarness(t, nil)
	232	+	const win = 0x500001
	233	+	hs.classic(win)
	234	+	hs.p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_NAME"]) })
	235	+	hs.mapAndWait(win)
	236	+	require.Equal(t, "old title", hs.ready[win].Title)
	237	+	}
	238	+
	239	+	func TestMapFlowPIDFromXRes(t *testing.T) {
	240	+	hs := newHarness(t, func(p *xpeer) { p.pids = map[uint32]uint32{0x500001: 777} })
	241	+	const win = 0x500001
	242	+	hs.classic(win)
	243	+	hs.p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_PID"]) })
	244	+	hs.create(win)
	245	+	hs.expectReady(win)
	246	+	hs.p.mapRequest(win)
	247	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	248	+	require.Equal(t, 777, hs.ready[win].PID, "Ready waited for the QueryClientIds reply")
	249	+	require.Equal(t, 1, hs.count(func(r xpeerReq) bool { return r.major == 144 && r.minor == 4 }))
	250	+	require.Zero(t, hs.x.tab.rec(hs.x.tab.lookup(win)).pending)
	251	+	}
	252	+
	253	+	func TestMapFlowPIDUnknownStillReady(t *testing.T) {
	254	+	hs := newHarness(t, nil)
	255	+	const win = 0x500001
	256	+	hs.classic(win)
	257	+	hs.p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_PID"]) })
	258	+	hs.mapAndWait(win)
	259	+	require.Zero(t, hs.ready[win].PID)
	260	+	}
	261	+
	262	+	func TestMapFlowNoXResAsksNothing(t *testing.T) {
	263	+	exts := fullPeerExts()
	264	+	delete(exts, "X-Resource")
	265	+	fd, p := startXPeer(t, exts)
	266	+	x, err := Boot(context.Background(), fd, testLog())
	267	+	require.NoError(t, err)
	268	+	t.Cleanup(x.CloseConn)
	269	+	h := newMockhost(t)
	270	+	src := newMockfdSource(t)
	271	+	src.EXPECT().Remove().Maybe()
	272	+	post, _ := newPost()
	273	+	x.attach(src, h, post)
	274	+	hs := &harness{t: t, x: x, p: p, h: h, ready: map[uint32]WindowInfo{}}
	275	+	const win = 0x500001
	276	+	hs.classic(win)
	277	+	p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_PID"]) })
	278	+	hs.mapAndWait(win)
	279	+	require.Zero(t, hs.count(func(r xpeerReq) bool { return r.major == 144 }))
	280	+	}
	281	+
	282	+	func TestMapFlowBadWindowOnPropertiesNeverReady(t *testing.T) {
	283	+	hs := newHarness(t, nil)
	284	+	const win = 0x500001
	285	+	hs.classic(win)
	286	+	hs.p.set(func(p *xpeer) { p.bad[win] = true })
	287	+	s := hs.create(win)
	288	+	hs.p.mapRequest(win)
	289	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Errors >= uint64(propCount)+1 })
	290	+	require.Zero(t, hs.x.tab.rec(s).pending, "failed replies are no longer awaited")
	291	+	require.False(t, hs.x.tab.rec(s).ready)
	292	+	require.Zero(t, hs.x.Stats().Unattributed)
	293	+
	294	+	hs.h.EXPECT().Dissociate(s, true).Once()
	295	+	hs.p.destroyNotify(win)
	296	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(win) == 0 })
	297	+	}
	298	+
	299	+	func TestMapRequestTwiceBeforeReadyAsksOnce(t *testing.T) {
	300	+	hs := newHarness(t, nil)
	301	+	const win = 0x500001
	302	+	hs.classic(win)
	303	+	hs.create(win)
	304	+	hs.p.holdReplies()
	305	+	hs.p.mapRequest(win)
	306	+	hs.p.mapRequest(win)
	307	+	hs.expectReady(win)
	308	+	hs.waitMap(win)
	309	+	hs.p.release()
	310	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	311	+	require.Equal(t, 1, hs.count(func(r xpeerReq) bool { return r.major == opMapWindow && r.u32(4) == win }))
	312	+	}
	313	+
	314	+	func TestMapNotifyMarksMapped(t *testing.T) {
	315	+	hs := newHarness(t, nil)
	316	+	const win = 0x500001
	317	+	hs.classic(win)
	318	+	s := hs.mapAndWait(win)
	319	+	hs.p.mapNotify(win)
	320	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).mapped })
	321	+	}
	322	+
	323	+	// Property changes after Ready.
	324	+
	325	+	func (hs *harness) notify(win uint32, atom string, deleted bool) {
	326	+	hs.t.Helper()
	327	+	before := hs.x.Stats().Replies
	328	+	hs.p.propertyNotify(win, hs.p.atom(atom), deleted)
	329	+	if deleted {
	330	+	hs.p.propertyNotify(win, hs.p.atom("WM_PROTOCOLS"), false) // sentinel: one reply follows
	331	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Replies > before })
	332	+	return
	333	+	}
	334	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Replies > before })
	335	+	}
	336	+
	337	+	func TestPropertyChangedTitleReachesHostOnce(t *testing.T) {
	338	+	hs := newHarness(t, nil)
	339	+	const win = 0x500001
	340	+	hs.classic(win)
	341	+	s := hs.mapAndWait(win)
	342	+
	343	+	hs.h.EXPECT().Title(s, "renamed").Once()
	344	+	hs.str(win, "_NET_WM_NAME", hs.p.atom("UTF8_STRING"), "renamed")
	345	+	hs.notify(win, "_NET_WM_NAME", false)
	346	+	require.Equal(t, "renamed", hs.x.tab.rec(s).title)
	347	+
	348	+	// Same value again: no host call (the mock fails on an unexpected one).
	349	+	hs.notify(win, "_NET_WM_NAME", false)
	350	+
	351	+	// WM_NAME is ignored while _NET_WM_NAME is set.
	352	+	hs.p.setProp(win, uint32(xproto.AtomWmName), uint32(xproto.AtomString), 8, []byte("legacy"))
	353	+	before := hs.x.Stats().Events
	354	+	hs.p.propertyNotify(win, uint32(xproto.AtomWmName), false)
	355	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events > before })
	356	+	require.Equal(t, "renamed", hs.x.tab.rec(s).title)
	357	+	}
	358	+
	359	+	func TestPropertyNetNameDeletedFallsBackToWMName(t *testing.T) {
	360	+	hs := newHarness(t, nil)
	361	+	const win = 0x500001
	362	+	hs.classic(win)
	363	+	s := hs.mapAndWait(win)
	364	+	hs.p.set(func(p *xpeer) { delete(p.props[win], p.atoms["_NET_WM_NAME"]) })
	365	+	hs.h.EXPECT().Title(s, "old title").Once()
	366	+	hs.p.propertyNotify(win, hs.p.atom("_NET_WM_NAME"), true)
	367	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).title == "old title" })
	368	+	}
	369	+
	370	+	func TestPropertyClassChangeReachesHost(t *testing.T) {
	371	+	hs := newHarness(t, nil)
	372	+	const win = 0x500001
	373	+	hs.classic(win)
	374	+	s := hs.mapAndWait(win)
	375	+	hs.h.EXPECT().AppID(s, "Other").Once()
	376	+	hs.p.setProp(win, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("i\x00Other\x00"))
	377	+	hs.p.propertyNotify(win, uint32(xproto.AtomWmClass), false)
	378	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).class == "Other" })
	379	+	}
	380	+
	381	+	func TestPropertyTransientChangeReachesHost(t *testing.T) {
	382	+	hs := newHarness(t, nil)
	383	+	const a, b = 0x500001, 0x500002
	384	+	hs.classic(a)
	385	+	as := hs.mapAndWait(a)
	386	+	hs.classic(b)
	387	+	bs := hs.mapAndWait(b)
	388	+	hs.h.EXPECT().Parent(bs, as).Once()
	389	+	hs.p.setProp(b, uint32(xproto.AtomWmTransientFor), uint32(xproto.AtomWindow), 32, le32(a))
	390	+	hs.p.propertyNotify(b, uint32(xproto.AtomWmTransientFor), false)
	391	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(bs).transient == a })
	392	+	}
	393	+
	394	+	func TestPropertyInputProtocolsAndHints(t *testing.T) {
	395	+	hs := newHarness(t, nil)
	396	+	const win = 0x500001
	397	+	hs.classic(win)
	398	+	hs.atoms(win, "WM_PROTOCOLS", "WM_DELETE_WINDOW", "WM_TAKE_FOCUS")
	399	+	hs.p.setProp(win, uint32(xproto.AtomWmHints), uint32(xproto.AtomWmHints), 32, le32(hintInput, 0, 0, 0, 0, 0, 0, 0, 0))
	400	+	s := hs.mapAndWait(win)
	401	+	r := hs.x.tab.rec(s)
	402	+	require.True(t, r.deleteWindow)
	403	+	require.True(t, r.takeFocus)
	404	+	require.False(t, r.input, "WM_HINTS input = false")
	405	+
	406	+	// No WM_HINTS: input defaults to true.
	407	+	const other = 0x500002
	408	+	hs.classic(other)
	409	+	o := hs.mapAndWait(other)
	410	+	require.True(t, hs.x.tab.rec(o).input)
	411	+	require.False(t, hs.x.tab.rec(o).deleteWindow)
	412	+	}
	413	+
	414	+	func TestPropertyUnwatchedAtomAsksNothing(t *testing.T) {
	415	+	hs := newHarness(t, nil)
	416	+	const win = 0x500001
	417	+	hs.classic(win)
	418	+	hs.mapAndWait(win)
	419	+	n := len(hs.p.requests())
	420	+	hs.p.propertyNotify(win, hs.p.atom("_MOTIF_WM_HINTS"), false)
	421	+	hs.p.propertyNotify(0x999999, hs.p.atom("_NET_WM_NAME"), false) // unknown window
	422	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events >= 2 })
	423	+	require.Len(t, hs.p.requests(), n)
	424	+	}
	425	+
	426	+	// Pairing.
	427	+
	428	+	func (hs *harness) serialMsg(win uint32, serial uint64) {
	429	+	hs.p.clientMessage(win, hs.p.atom("WL_SURFACE_SERIAL"), uint32(serial), uint32(serial>>32))
	430	+	hs.t.Helper()
	431	+	before := hs.x.Stats().Events
	432	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Events > before })
	433	+	}
	434	+
	435	+	func TestPairingSerialBeforeSetSerial(t *testing.T) {
	436	+	hs := newHarness(t, nil)
	437	+	const win = 0x500001
	438	+	hs.classic(win)
	439	+	s := hs.mapAndWait(win)
	440	+	hs.serialMsg(win, 0x1_0000_0002)
	441	+	require.EqualValues(t, 0x1_0000_0002, hs.x.tab.rec(s).serial, "high word in data32[1]")
	442	+	hs.h.EXPECT().Associate(s, uint64(99)).Once()
	443	+	hs.x.SetSerial(99, 0x1_0000_0002)
	444	+	require.EqualValues(t, 99, hs.x.tab.rec(s).surface)
	445	+	require.Zero(t, hs.x.unpairedN)
	446	+	}
	447	+
	448	+	func TestPairingSetSerialBeforeSerial(t *testing.T) {
	449	+	hs := newHarness(t, nil)
	450	+	const win = 0x500001
	451	+	hs.classic(win)
	452	+	s := hs.mapAndWait(win)
	453	+	hs.x.SetSerial(99, 7)
	454	+	require.Equal(t, 1, hs.x.unpairedN)
	455	+	hs.h.EXPECT().Associate(s, uint64(99)).Once()
	456	+	hs.serialMsg(win, 7)
	457	+	require.Zero(t, hs.x.unpairedN)
	458	+	}
	459	+
	460	+	func TestPairingWaitsForReady(t *testing.T) {
	461	+	hs := newHarness(t, nil)
	462	+	const win = 0x500001
	463	+	hs.classic(win)
	464	+	s := hs.create(win)
	465	+	hs.x.SetSerial(5, 3)
	466	+	hs.serialMsg(win, 3) // not mapped yet: no Associate (the mock fails on one)
	467	+	require.Zero(t, hs.x.tab.rec(s).surface)
	468	+
	469	+	hs.h.EXPECT().Associate(s, uint64(5)).Once()
	470	+	hs.expectReady(win)
	471	+	hs.p.mapRequest(win)
	472	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).surface != 0 })
	473	+	}
	474	+
	475	+	func TestPairingSerialForUnknownWindowIgnored(t *testing.T) {
	476	+	hs := newHarness(t, nil)
	477	+	hs.x.SetSerial(5, 3)
	478	+	hs.serialMsg(0x888888, 3)
	479	+	require.Equal(t, 1, hs.x.unpairedN, "stays unpaired")
	480	+	}
	481	+
	482	+	func TestPairingSurfaceGoneBeforePair(t *testing.T) {
	483	+	hs := newHarness(t, nil)
	484	+	const win = 0x500001
	485	+	hs.classic(win)
	486	+	s := hs.mapAndWait(win)
	487	+	hs.x.SetSerial(5, 3)
	488	+	hs.x.SurfaceGone(5)
	489	+	require.Zero(t, hs.x.unpairedN)
	490	+	hs.serialMsg(win, 3) // the surface is gone: nothing to pair with
	491	+	require.Zero(t, hs.x.tab.rec(s).surface)
	492	+	}
	493	+
	494	+	func TestPairingSurfaceGoneAfterPairClearsLink(t *testing.T) {
	495	+	hs := newHarness(t, nil)
	496	+	const win = 0x500001
	497	+	hs.classic(win)
	498	+	s := hs.mapAndWait(win)
	499	+	hs.serialMsg(win, 3)
	500	+	hs.h.EXPECT().Associate(s, uint64(5)).Once()
	501	+	hs.x.SetSerial(5, 3)
	502	+	hs.x.SurfaceGone(5)
	503	+	require.Zero(t, hs.x.tab.rec(s).surface)
	504	+	}
	505	+
	506	+	func TestPairingDuplicateSerialIgnored(t *testing.T) {
	507	+	hs := newHarness(t, nil)
	508	+	const win = 0x500001
	509	+	hs.classic(win)
	510	+	s := hs.mapAndWait(win)
	511	+	hs.serialMsg(win, 3)
	512	+	hs.serialMsg(win, 4)
	513	+	require.EqualValues(t, 3, hs.x.tab.rec(s).serial)
	514	+	hs.x.SetSerial(8, 4) // nobody announces 4: stays unpaired
	515	+	require.Equal(t, 1, hs.x.unpairedN)
	516	+	}
	517	+
	518	+	func TestPairingUnmanagedKeepsSurfaceWithoutAssociate(t *testing.T) {
	519	+	hs := newHarness(t, nil)
	520	+	hs.p.createNotify(0x500009, true)
	521	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(0x500009) != 0 })
	522	+	hs.serialMsg(0x500009, 3)
	523	+	hs.x.SetSerial(5, 3) // the mock fails on an Associate
	524	+	require.EqualValues(t, 5, hs.x.tab.rec(hs.x.tab.lookup(0x500009)).surface)
	525	+	}
	526	+
	527	+	func TestPairingTableOverflowDropsOldest(t *testing.T) {
	528	+	hs := newHarness(t, nil)
	529	+	for i := uint64(1); i <= unpairedCap+1; i++ {
	530	+	hs.x.SetSerial(100+i, i)
	531	+	}
	532	+	require.Equal(t, unpairedCap, hs.x.unpairedN)
	533	+	for i := 0; i < hs.x.unpairedN; i++ {
	534	+	require.NotEqual(t, uint64(1), hs.x.unpaired[i].serial, "oldest dropped")
	535	+	}
	536	+	}
	537	+
	538	+	func TestPairingZeroSerialIgnored(t *testing.T) {
	539	+	hs := newHarness(t, nil)
	540	+	hs.x.SetSerial(5, 0)
	541	+	require.Zero(t, hs.x.unpairedN)
	542	+	}
	543	+
	544	+	func TestLegacySurfaceIDCountedAndIgnored(t *testing.T) {
	545	+	hs := newHarness(t, nil)
	546	+	const win = 0x500001
	547	+	hs.classic(win)
	548	+	s := hs.mapAndWait(win)
	549	+	hs.p.clientMessage(win, hs.p.atom("WL_SURFACE_ID"), 12)
	550	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().LegacyID == 1 })
	551	+	require.Zero(t, hs.x.tab.rec(s).serial)
	552	+	}
	553	+
	554	+	func TestNetWMStateClientMessageForwardsFullscreen(t *testing.T) {
	555	+	hs := newHarness(t, nil)
	556	+	const win = 0x500001
	557	+	hs.classic(win)
	558	+	s := hs.mapAndWait(win)
	559	+	hs.h.EXPECT().Fullscreen(s, true).Once()
	560	+	hs.p.clientMessage(win, hs.p.atom("_NET_WM_STATE"), 1, hs.p.atom("_NET_WM_STATE_FULLSCREEN"))
	561	+	readUntil(t, hs.x, func() bool { return hs.x.tab.rec(s).fullscreen })
	562	+	hs.h.EXPECT().Fullscreen(s, false).Once() // toggle
	563	+	hs.p.clientMessage(win, hs.p.atom("_NET_WM_STATE"), 2, hs.p.atom("_NET_WM_STATE_FULLSCREEN"))
	564	+	readUntil(t, hs.x, func() bool { return !hs.x.tab.rec(s).fullscreen })
	565	+	// Not written back by the message itself.
	566	+	st, ok := hs.p.prop(win, "_NET_WM_STATE")
	567	+	require.True(t, ok)
	568	+	require.Empty(t, st.data)
	569	+	}
	570	+
	571	+	// Unmap, destroy, remap.
	572	+
	573	+	func TestUnmapDissociatesAndRemapRereadsProperties(t *testing.T) {
	574	+	hs := newHarness(t, nil)
	575	+	const win = 0x500001
	576	+	hs.classic(win)
	577	+	s := hs.mapAndWait(win)
	578	+
	579	+	// A synthetic UnmapNotify (ICCCM withdraw request) is not an unmap.
	580	+	hs.p.unmapNotify(win, true)
	581	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events >= 2 })
	582	+	require.True(t, hs.x.tab.rec(s).ready)
	583	+
	584	+	hs.h.EXPECT().Dissociate(s, false).Once()
	585	+	hs.p.unmapNotify(win, false)
	586	+	readUntil(t, hs.x, func() bool { return !hs.x.tab.rec(s).ready })
	587	+	r := hs.x.tab.rec(s)
	588	+	require.False(t, r.mapping)
	589	+	require.Zero(t, r.serial)
	590	+	hs.p.waitReq(0, func(q xpeerReq) bool {
	591	+	return q.major == opSetInputFocus \|\| q.major == opChangeProperty && q.u32(4) == win
	592	+	})
	593	+	readUntil(t, hs.x, func() bool {
	594	+	v, ok := hs.p.prop(win, "WM_STATE")
	595	+	return ok && len(v.data) == 8 && binary.LittleEndian.Uint32(v.data) == 0
	596	+	})
	597	+	_, ok := hs.p.prop(win, "_NET_WM_STATE")
	598	+	require.False(t, ok, "_NET_WM_STATE deleted")
	599	+	list, _ := hs.p.prop(peerRoot, "_NET_CLIENT_LIST")
	600	+	require.Empty(t, list.data)
	601	+
	602	+	// Remap starts over.
	603	+	delete(hs.ready, win)
	604	+	hs.expectReady(win)
	605	+	n := hs.count(func(q xpeerReq) bool { return q.major == opGetProperty && q.u32(4) == win })
	606	+	hs.p.mapRequest(win)
	607	+	readUntil(t, hs.x, func() bool { _, ok := hs.ready[win]; return ok })
	608	+	require.Equal(t, n+propCount, hs.count(func(q xpeerReq) bool { return q.major == opGetProperty && q.u32(4) == win }))
	609	+	list, _ = hs.p.prop(peerRoot, "_NET_CLIENT_LIST")
	610	+	require.Equal(t, []uint32{win}, atomsOf(list))
	611	+	}
	612	+
	613	+	func TestDestroyWhileMappingNeverReady(t *testing.T) {
	614	+	hs := newHarness(t, nil)
	615	+	const win = 0x500001
	616	+	hs.classic(win)
	617	+	s := hs.create(win)
	618	+	hs.p.holdReplies()
	619	+	hs.p.mapRequest(win)
	620	+	hs.waitMap(win)
	621	+	hs.h.EXPECT().Dissociate(s, true).Once()
	622	+	hs.p.destroyNotify(win)
	623	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(win) == 0 })
	624	+	replies := hs.x.Stats().Replies
	625	+	hs.p.release() // replies for a window that is gone: xturbo retired their slots
	626	+	readUntil(t, hs.x, func() bool { return hs.x.conn.Stats().DroppedReplies >= uint64(propCount) })
	627	+	require.Equal(t, replies, hs.x.Stats().Replies, "none reaches the XWM")
	628	+	}
	629	+
	630	+	func TestStaleRepliesAfterSlotReuseAreIgnored(t *testing.T) {
	631	+	hs := newHarness(t, nil)
	632	+	const old, fresh = 0x500001, 0x500002
	633	+	hs.classic(old)
	634	+	hs.classic(fresh)
	635	+	s := hs.create(old)
	636	+	hs.p.holdReplies()
	637	+	hs.p.mapRequest(old)
	638	+	hs.waitMap(old)
	639	+	hs.h.EXPECT().Dissociate(s, true).Once()
	640	+	hs.p.destroyNotify(old)
	641	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(old) == 0 })
	642	+
	643	+	hs.expectCreated(fresh)
	644	+	hs.p.createNotify(fresh, false)
	645	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(fresh) != 0 })
	646	+	require.Equal(t, s, hs.x.tab.lookup(fresh), "the freed slot is reused")
	647	+
	648	+	hs.p.release()
	649	+	readUntil(t, hs.x, func() bool { return hs.x.conn.Stats().DroppedReplies >= uint64(propCount) })
	650	+
	651	+	// A reply that does get through with the old tag (slot reused, generation
	652	+	// bumped) is ignored.
	653	+	oldTag := s \| Slot(hs.x.tab.rec(s).gen-1)<<16
	654	+	rep := make([]byte, 32)
	655	+	rep[0] = 1
	656	+	hs.x.onReply(&xturbo.Reply{Kind: kindProp, Args: [4]uint32{uint32(oldTag), propClass}, Raw: rep})
	657	+	hs.x.onReply(&xturbo.Reply{Kind: kindGeom, Args: [4]uint32{uint32(oldTag)}, Raw: rep})
	658	+	require.EqualValues(t, 2, hs.x.Stats().Stale)
	659	+	require.False(t, hs.x.tab.rec(s).ready, "stale replies must not complete the new window")
	660	+	require.Zero(t, hs.x.tab.rec(s).pending)
	661	+	}
	662	+
	663	+	// Reparenting.
	664	+
	665	+	func TestReparentAwayFromRootRemovesManagedWindow(t *testing.T) {
	666	+	hs := newHarness(t, nil)
	667	+	const win = 0x500001
	668	+	hs.classic(win)
	669	+	s := hs.mapAndWait(win)
	670	+	hs.h.EXPECT().Dissociate(s, true).Once()
	671	+	hs.p.reparentNotify(win, 0x600000)
	672	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(win) == 0 })
	673	+	list, _ := hs.p.prop(peerRoot, "_NET_CLIENT_LIST")
	674	+	require.Empty(t, list.data)
	675	+	require.Zero(t, hs.x.tab.n)
	676	+	}
	677	+
	678	+	func TestReparentAwayOfUnmanagedWindowRemovesIt(t *testing.T) {
	679	+	hs := newHarness(t, nil)
	680	+	hs.p.createNotify(0x500009, true)
	681	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(0x500009) != 0 })
	682	+	hs.p.reparentNotify(0x500009, 0x600000)
	683	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(0x500009) == 0 })
	684	+	}
	685	+
	686	+	func TestReparentIntoRootAdoptsWindow(t *testing.T) {
	687	+	hs := newHarness(t, nil)
	688	+	const win = 0x500001
	689	+	hs.expectCreated(win)
	690	+	hs.p.reparentNotify(win, peerRoot)
	691	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(win) != 0 })
	692	+	require.Equal(t, kindManaged, hs.x.tab.rec(hs.x.tab.lookup(win)).kind)
	693	+
	694	+	// Already known: no second Created.
	695	+	hs.p.reparentNotify(win, peerRoot)
	696	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events >= 2 })
	697	+	}
	698	+
	699	+	func TestReparentIntoRootOfOverrideRedirectWindowStaysUnmanaged(t *testing.T) {
	700	+	hs := newHarness(t, nil)
	701	+	hs.p.event(21, func(b *[32]byte) {
	702	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	703	+	binary.LittleEndian.PutUint32(b[8:], 0x500009)
	704	+	binary.LittleEndian.PutUint32(b[12:], peerRoot)
	705	+	b[20] = 1
	706	+	})
	707	+	readUntil(t, hs.x, func() bool { return hs.x.tab.lookup(0x500009) != 0 })
	708	+	require.Equal(t, kindUnmanaged, hs.x.tab.rec(hs.x.tab.lookup(0x500009)).kind)
	709	+	}
	710	+
	711	+	func TestReparentOfWMWindowIgnored(t *testing.T) {
	712	+	hs := newHarness(t, nil)
	713	+	hs.p.reparentNotify(hs.x.wmWin, peerRoot)
	714	+	readUntil(t, hs.x, func() bool { return hs.x.Stats().Events >= 1 })
	715	+	require.Zero(t, hs.x.tab.lookup(hs.x.wmWin))
	716	+	}
	717	+
	718	+	// Window known only before Attach: Attach replays the map flow.
	719	+	func TestAttachMapsWindowsRequestedBeforeAttach(t *testing.T) {
	720	+	x, p := bootPeer(t, nil)
	721	+	const win = 0x500001
	722	+	p.setProp(win, uint32(xproto.AtomWmClass), uint32(xproto.AtomString), 8, []byte("a\x00B\x00"))
	723	+	p.createNotify(win, false)
	724	+	p.mapRequest(win)
	725	+	readUntil(t, x, func() bool { return x.Stats().Events >= 2 })
	726	+	h := newMockhost(t)
	727	+	src := newMockfdSource(t)
	728	+	src.EXPECT().Remove().Maybe()
	729	+	post, _ := newPost()
	730	+	var got WindowInfo
	731	+	done := false
	732	+	h.EXPECT().Created(mock.Anything, uint32(win)).Return(ports.WindowID(1)).Once()
	733	+	h.EXPECT().Ready(mock.Anything, mock.Anything).Run(func(_ Slot, i WindowInfo) { got, done = i, true }).Once()
	734	+	x.attach(src, h, post)
	735	+	readUntil(t, x, func() bool { return done })
	736	+	require.Equal(t, "B", got.AppID)
	737	+	}
	738	+
	739	+	// Replies complete a map in any order (a server may answer the geometry
	740	+	// before the properties it was asked for first): Ready fires on the last one.
	741	+	func TestMapFlowReadyFiresOnLastReplyInAnyOrder(t *testing.T) {
	742	+	hs := newHarness(t, nil)
	743	+	const win = 0x500001
	744	+	hs.classic(win)
	745	+	s := hs.create(win)
	746	+	r := hs.x.tab.rec(s)
	747	+	r.mapping, r.pending = true, propMaskAll&^propClientIDs
	748	+	hs.expectReady(win)
	749	+	order := []int{propCount, propPID, propClass, propNetName, propName, propHints, propNormalHints, propProtocols, propTransientFor, propWindowType, propState}
	750	+	for i, bit := range order {
	751	+	require.False(t, hs.x.tab.rec(s).ready, i)
	752	+	if bit == propCount { // the geometry
	753	+	hs.x.tab.rec(s).w, hs.x.tab.rec(s).h = 300, 200
	754	+	hs.x.tab.rec(s).pending &^= propGeom
	755	+	hs.x.checkReady(s)
	756	+	continue
	757	+	}
	758	+	var val []byte
	759	+	var format uint8 = 8
	760	+	switch bit {
	761	+	case propClass:
	762	+	val = []byte("a\x00B\x00")
	763	+	case propNetName:
	764	+	val = []byte("t")
	765	+	case propPID:
	766	+	val, format = le32(5), 32
	767	+	default:
	768	+	format = 32
	769	+	}
	770	+	x := hs.x
	771	+	x.applyProp(s, bit, format, val)
	772	+	x.tab.rec(s).pending &^= 1 << bit
	773	+	x.checkReady(s)
	774	+	}
	775	+	require.True(t, hs.x.tab.rec(s).ready)
	776	+	require.Equal(t, "B", hs.ready[win].AppID)
	777	+	require.Equal(t, "t", hs.ready[win].Title)
	778	+	require.Equal(t, 5, hs.ready[win].PID)
	779	+	}

A internal/adapters/wayland/xwm/props.go +356 -0

@@ -0,0 +1,356 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"bytes"
	5	+	"encoding/binary"
	6	+	"strings"
	7	+
	8	+	"bnema.dev/xturbo"
	9	+	"bnema.dev/xturbo/res"
	10	+	"bnema.dev/xturbo/xproto"
	11	+	)
	12	+
	13	+	// Property indices (second Expect argument of kindProp) and their bits in
	14	+	// record.pending. propGeom is the GetGeometry bit; propClientIDs is raised
	15	+	// while a QueryClientIds reply stands in for a missing _NET_WM_PID.
	16	+	const (
	17	+	propClass = iota
	18	+	propName
	19	+	propNetName
	20	+	propHints
	21	+	propNormalHints
	22	+	propProtocols
	23	+	propTransientFor
	24	+	propWindowType
	25	+	propState
	26	+	propPID
	27	+	propCount
	28	+	)
	29	+
	30	+	const (
	31	+	propGeom uint16 = 1 << propCount
	32	+	propClientIDs uint16 = propGeom << 1
	33	+	// propMaskAll is what a map waits for: every property and the geometry.
	34	+	propMaskAll uint16 = propGeom<<1 - 1
	35	+	)
	36	+
	37	+	// WM_NORMAL_HINTS flags and WM_HINTS flags.
	38	+	const (
	39	+	hintInput = 1 << 0
	40	+	hintMinSize = 1 << 4
	41	+	hintMaxSize = 1 << 5
	42	+	)
	43	+
	44	+	// maxPropWords bounds one GetProperty (4 KiB), so titles are truncated there.
	45	+	const maxPropWords = 1024
	46	+
	47	+	// propIndex maps a property atom to its index, or -1 when it is not watched.
	48	+	func (x *XWM) propIndex(a uint32) int {
	49	+	switch a {
	50	+	case uint32(xproto.AtomWmClass):
	51	+	return propClass
	52	+	case uint32(xproto.AtomWmName):
	53	+	return propName
	54	+	case uint32(xproto.AtomWmHints):
	55	+	return propHints
	56	+	case uint32(xproto.AtomWmNormalHints):
	57	+	return propNormalHints
	58	+	case uint32(xproto.AtomWmTransientFor):
	59	+	return propTransientFor
	60	+	case x.atoms[atomNetWMName]:
	61	+	return propNetName
	62	+	case x.atoms[atomWMProtocols]:
	63	+	return propProtocols
	64	+	case x.atoms[atomNetWMWindowType]:
	65	+	return propWindowType
	66	+	case x.atoms[atomNetWMState]:
	67	+	return propState
	68	+	case x.atoms[atomNetWMPID]:
	69	+	return propPID
	70	+	}
	71	+	return -1
	72	+	}
	73	+
	74	+	func (x *XWM) propAtom(idx int) xproto.Atom {
	75	+	switch idx {
	76	+	case propClass:
	77	+	return xproto.AtomWmClass
	78	+	case propName:
	79	+	return xproto.AtomWmName
	80	+	case propHints:
	81	+	return xproto.AtomWmHints
	82	+	case propNormalHints:
	83	+	return xproto.AtomWmNormalHints
	84	+	case propTransientFor:
	85	+	return xproto.AtomWmTransientFor
	86	+	case propNetName:
	87	+	return xproto.Atom(x.atoms[atomNetWMName])
	88	+	case propProtocols:
	89	+	return xproto.Atom(x.atoms[atomWMProtocols])
	90	+	case propWindowType:
	91	+	return xproto.Atom(x.atoms[atomNetWMWindowType])
	92	+	case propState:
	93	+	return xproto.Atom(x.atoms[atomNetWMState])
	94	+	default:
	95	+	return xproto.Atom(x.atoms[atomNetWMPID])
	96	+	}
	97	+	}
	98	+
	99	+	// requestProp queues a GetProperty for property idx of s.
	100	+	func (x *XWM) requestProp(s Slot, idx int) {
	101	+	rec := x.tab.rec(s)
	102	+	seq := xproto.GetProperty(x.conn.Buf(), false, xproto.Window(rec.xid), x.propAtom(idx), xproto.AtomAny, 0, maxPropWords)
	103	+	rec.pending \|= 1 << idx
	104	+	x.expect(seq, kindProp, x.tab.tag(s), uint32(idx))
	105	+	}
	106	+
	107	+	// onPropertyNotify handles a changed property of a managed window that is
	108	+	// being mapped or is mapped; unwatched atoms cost nothing.
	109	+	func (x XWM) onPropertyNotify(ev xturbo.Event) {
	110	+	e := xproto.PropertyNotifyOf(ev)
	111	+	s := x.tab.lookup(uint32(e.Window()))
	112	+	if s == 0 {
	113	+	return
	114	+	}
	115	+	if rec := x.tab.rec(s); rec.kind != kindManaged \|\| !rec.mapping {
	116	+	return
	117	+	} else if rec.ready && x.propIndex(uint32(e.Atom())) == propState {
	118	+	// The XWM owns _NET_WM_STATE of a mapped window: our own writes
	119	+	// would feed back, and clients change it with ClientMessages.
	120	+	return
	121	+	}
	122	+	idx := x.propIndex(uint32(e.Atom()))
	123	+	if idx < 0 {
	124	+	return
	125	+	}
	126	+	if e.State() == xproto.PropertyDelete {
	127	+	x.applyProp(s, idx, 0, nil)
	128	+	return
	129	+	}
	130	+	x.requestProp(s, idx)
	131	+	}
	132	+
	133	+	// onPropReply decodes one GetProperty reply into the record. An absent
	134	+	// property (format 0) clears its fields.
	135	+	func (x XWM) onPropReply(s Slot, _ record, r *xturbo.Reply) {
	136	+	idx := int(r.Args[1])
	137	+	if idx < 0 \|\| idx >= propCount {
	138	+	return
	139	+	}
	140	+	var format uint8
	141	+	var val []byte
	142	+	if rep, ok := xproto.ParseGetPropertyReply(r.Raw); ok {
	143	+	format, val = rep.Format(), rep.Value()
	144	+	}
	145	+	x.applyProp(s, idx, format, val)
	146	+	x.tab.rec(s).pending &^= 1 << idx
	147	+	x.checkReady(s)
	148	+	}
	149	+
	150	+	func word(b []byte, i int) uint32 { return binary.LittleEndian.Uint32(b[4*i:]) }
	151	+
	152	+	// applyProp stores one decoded property. It does not allocate unless a string
	153	+	// changed. Host calls come last: the record is not touched after them.
	154	+	func (x *XWM) applyProp(s Slot, idx int, format uint8, val []byte) {
	155	+	rec := x.tab.rec(s)
	156	+	if idx == propClass \|\| idx == propName \|\| idx == propNetName {
	157	+	if format != 8 {
	158	+	val = nil
	159	+	}
	160	+	} else if format != 32 {
	161	+	val = nil
	162	+	}
	163	+	switch idx {
	164	+	case propClass:
	165	+	inst, class := val, []byte(nil)
	166	+	if i := bytes.IndexByte(val, 0); i >= 0 {
	167	+	inst, class = val[:i], val[i+1:]
	168	+	if j := bytes.IndexByte(class, 0); j >= 0 {
	169	+	class = class[:j]
	170	+	}
	171	+	}
	172	+	app := class
	173	+	if len(app) == 0 {
	174	+	app = inst
	175	+	}
	176	+	if rec.class == string(app) {
	177	+	return
	178	+	}
	179	+	cls := strings.ToValidUTF8(string(app), "\uFFFD")
	180	+	if rec.class == cls {
	181	+	return
	182	+	}
	183	+	rec.class = cls
	184	+	if rec.ready {
	185	+	x.host.AppID(s, rec.class)
	186	+	}
	187	+	case propName:
	188	+	if !rec.hasNetName {
	189	+	x.setTitle(s, val)
	190	+	}
	191	+	case propNetName:
	192	+	had := rec.hasNetName
	193	+	rec.hasNetName = len(val) > 0
	194	+	if rec.hasNetName {
	195	+	x.setTitle(s, val)
	196	+	} else if had && rec.mapping {
	197	+	x.requestProp(s, propName)
	198	+	}
	199	+	case propHints:
	200	+	rec.input = true
	201	+	if len(val) >= 8 && word(val, 0)&hintInput != 0 {
	202	+	rec.input = word(val, 1) != 0
	203	+	}
	204	+	case propNormalHints:
	205	+	rec.minW, rec.minH, rec.maxW, rec.maxH = 0, 0, 0, 0
	206	+	if len(val) >= 36 {
	207	+	fl := word(val, 0)
	208	+	if fl&hintMinSize != 0 {
	209	+	rec.minW, rec.minH = int32(word(val, 5)), int32(word(val, 6))
	210	+	}
	211	+	if fl&hintMaxSize != 0 {
	212	+	rec.maxW, rec.maxH = int32(word(val, 7)), int32(word(val, 8))
	213	+	}
	214	+	}
	215	+	x.classify(rec)
	216	+	case propProtocols:
	217	+	rec.deleteWindow, rec.takeFocus = false, false
	218	+	for i := 0; i+4 <= len(val); i += 4 {
	219	+	switch binary.LittleEndian.Uint32(val[i:]) {
	220	+	case x.atoms[atomWMDeleteWindow]:
	221	+	rec.deleteWindow = true
	222	+	case x.atoms[atomWMTakeFocus]:
	223	+	rec.takeFocus = true
	224	+	}
	225	+	}
	226	+	case propTransientFor:
	227	+	var t uint32
	228	+	if len(val) >= 4 {
	229	+	t = word(val, 0)
	230	+	}
	231	+	if t == rec.transient {
	232	+	return
	233	+	}
	234	+	rec.transient = t
	235	+	x.classify(rec)
	236	+	if rec.ready {
	237	+	x.host.Parent(s, x.managedSlot(t))
	238	+	}
	239	+	case propWindowType:
	240	+	rec.wtype = 0
	241	+	for i := 0; i+4 <= len(val); i += 4 {
	242	+	if t := x.windowType(binary.LittleEndian.Uint32(val[i:])); t != 0 {
	243	+	rec.wtype = t
	244	+	break
	245	+	}
	246	+	}
	247	+	x.classify(rec)
	248	+	case propState:
	249	+	var modal, fs bool
	250	+	for i := 0; i+4 <= len(val); i += 4 {
	251	+	switch binary.LittleEndian.Uint32(val[i:]) {
	252	+	case x.atoms[atomNetWMStateModal]:
	253	+	modal = true
	254	+	case x.atoms[atomNetWMStateFullscreen]:
	255	+	fs = true
	256	+	}
	257	+	}
	258	+	changed := fs != rec.fullscreen
	259	+	rec.modal, rec.fullscreen = modal, fs
	260	+	if changed && rec.ready {
	261	+	x.host.Fullscreen(s, fs)
	262	+	}
	263	+	case propPID:
	264	+	if len(val) >= 4 {
	265	+	rec.pid = int32(word(val, 0))
	266	+	return
	267	+	}
	268	+	rec.pid = 0
	269	+	if !rec.ready && rec.pending&propClientIDs == 0 && x.conn.Ext().Info(xturbo.ExtRes).Present {
	270	+	x.queryClientIDs(s)
	271	+	}
	272	+	}
	273	+	}
	274	+
	275	+	// setTitle stores a title when it differs; only a change allocates.
	276	+	func (x *XWM) setTitle(s Slot, val []byte) {
	277	+	rec := x.tab.rec(s)
	278	+	if rec.title == string(val) {
	279	+	return
	280	+	}
	281	+	t := strings.ToValidUTF8(string(val), "\uFFFD")
	282	+	if rec.title == t {
	283	+	return
	284	+	}
	285	+	rec.title = t
	286	+	if rec.ready {
	287	+	x.host.Title(s, rec.title)
	288	+	}
	289	+	}
	290	+
	291	+	// windowType returns the atom enum of a recognised _NET_WM_WINDOW_TYPE atom,
	292	+	// or 0.
	293	+	func (x *XWM) windowType(a uint32) uint8 {
	294	+	for t := atomNetWMWindowTypeNormal; t <= atomNetWMWindowTypeDND; t++ {
	295	+	if x.atoms[t] == a {
	296	+	return uint8(t)
	297	+	}
	298	+	}
	299	+	return 0
	300	+	}
	301	+
	302	+	// floatingType reports whether a window type floats by itself.
	303	+	func floatingType(t uint8) bool {
	304	+	switch int(t) {
	305	+	case atomNetWMWindowTypeDialog, atomNetWMWindowTypeUtility, atomNetWMWindowTypeSplash, atomNetWMWindowTypeToolbar:
	306	+	return true
	307	+	}
	308	+	return false
	309	+	}
	310	+
	311	+	// classify sets rec.floating, the single source of truth: a dialog-like
	312	+	// window type, a transient for a managed window, or a fixed size.
	313	+	func (x XWM) classify(rec record) {
	314	+	fixed := rec.minW > 0 && rec.minH > 0 && rec.minW == rec.maxW && rec.minH == rec.maxH
	315	+	rec.floating = floatingType(rec.wtype) \|\| x.managedSlot(rec.transient) != 0 \|\| fixed
	316	+	}
	317	+
	318	+	// managedSlot returns the slot of the managed window xid, or 0.
	319	+	func (x *XWM) managedSlot(xid uint32) Slot {
	320	+	if xid == 0 {
	321	+	return 0
	322	+	}
	323	+	if s := x.tab.lookup(xid); s != 0 && x.tab.rec(s).kind == kindManaged {
	324	+	return s
	325	+	}
	326	+	return 0
	327	+	}
	328	+
	329	+	// queryClientIDs asks XRes for the PID of the client owning s, which stands
	330	+	// in for a missing _NET_WM_PID: Ready waits for it (propClientIDs).
	331	+	func (x *XWM) queryClientIDs(s Slot) {
	332	+	rec := x.tab.rec(s)
	333	+	specs := [1]res.ClientIdSpec{{Client: rec.xid, Mask: res.ClientIdMaskLocalClientPID}}
	334	+	seq := res.QueryClientIds(x.conn.Buf(), specs[:])
	335	+	if seq == 0 {
	336	+	return
	337	+	}
	338	+	rec.pending \|= propClientIDs
	339	+	x.expect(seq, kindClientIds, x.tab.tag(s), 0)
	340	+	}
	341	+
	342	+	// onClientIdsReply stores the PID XRes found and releases the map.
	343	+	func (x XWM) onClientIdsReply(s Slot, rec record, r *xturbo.Reply) {
	344	+	if q, ok := res.ParseQueryClientIdsReply(r.Raw); ok {
	345	+	it := q.Ids()
	346	+	for it.Next() {
	347	+	v := it.Value()
	348	+	if v.Spec().Mask == res.ClientIdMaskLocalClientPID && v.Value().Len() > 0 {
	349	+	rec.pid = int32(v.Value().At(0))
	350	+	break
	351	+	}
	352	+	}
	353	+	}
	354	+	rec.pending &^= propClientIDs
	355	+	x.checkReady(s)
	356	+	}

A internal/adapters/wayland/xwm/space.go +135 -0

@@ -0,0 +1,135 @@
	1	+	package xwm
	2	+
	3	+	import "github.com/bnema/neferwl/internal/ports"
	4	+
	5	+	const maxRegions = 16
	6	+
	7	+	// Region is one output's part of the layout and where it is in X space.
	8	+	// X = layout - Origin.
	9	+	type Region struct {
	10	+	Layout, X ports.Rect // logical layout rect; X rect in X pixels
	11	+	}
	12	+
	13	+	// Space maps layout coordinates (which may be negative) to X coordinates
	14	+	// (non-negative: the layout top-left is X (0,0)). Fixed storage, no allocs.
	15	+	type Space struct {
	16	+	regions [maxRegions]Region
	17	+	n int
	18	+	dropped int // outputs beyond maxRegions in the last Set
	19	+	ox, oy int // layout point that is X (0,0)
	20	+	w, h int // X screen size: the extents
	21	+	}
	22	+
	23	+	// Origin is the layout point that is X (0,0): the top-left of the layout
	24	+	// extents.
	25	+	func (s *Space) Origin() (ox, oy int) { return s.ox, s.oy }
	26	+
	27	+	// Dropped is how many outputs of the last Set did not fit.
	28	+	func (s *Space) Dropped() int { return s.dropped }
	29	+
	30	+	// Set recomputes the mapping and reports whether it changed.
	31	+	func (s *Space) Set(l ports.Layout) bool {
	32	+	var next Space
	33	+	n := len(l)
	34	+	if n > maxRegions {
	35	+	next.dropped = n - maxRegions
	36	+	n = maxRegions
	37	+	}
	38	+	next.n = n
	39	+	var maxX, maxY int
	40	+	for i := 0; i < n; i++ {
	41	+	o := l[i]
	42	+	if i == 0 \|\| o.X < next.ox {
	43	+	next.ox = o.X
	44	+	}
	45	+	if i == 0 \|\| o.Y < next.oy {
	46	+	next.oy = o.Y
	47	+	}
	48	+	if i == 0 \|\| o.X+o.Width > maxX {
	49	+	maxX = o.X + o.Width
	50	+	}
	51	+	if i == 0 \|\| o.Y+o.Height > maxY {
	52	+	maxY = o.Y + o.Height
	53	+	}
	54	+	}
	55	+	for i := 0; i < n; i++ {
	56	+	o := l[i]
	57	+	next.regions[i] = Region{
	58	+	Layout: ports.Rect{X: o.X, Y: o.Y, W: o.Width, H: o.Height},
	59	+	X: ports.Rect{X: o.X - next.ox, Y: o.Y - next.oy, W: o.Width, H: o.Height},
	60	+	}
	61	+	}
	62	+	next.w, next.h = maxX-next.ox, maxY-next.oy
	63	+	if next.regions == s.regions && next.n == s.n && next.ox == s.ox && next.oy == s.oy &&
	64	+	next.w == s.w && next.h == s.h {
	65	+	s.dropped = next.dropped
	66	+	return false
	67	+	}
	68	+	*s = next
	69	+	return true
	70	+	}
	71	+
	72	+	// Size is the X screen size.
	73	+	func (s *Space) Size() (w, h int) { return s.w, s.h }
	74	+
	75	+	// nearest returns the index of the region containing the layout point, or
	76	+	// the closest one by squared distance when it is in a hole. -1 when empty.
	77	+	func (s *Space) nearest(lx, ly int) int {
	78	+	best, bestD := -1, 0
	79	+	for i := 0; i < s.n; i++ {
	80	+	r := s.regions[i].Layout
	81	+	dx := axisGap(lx, r.X, r.X+r.W)
	82	+	dy := axisGap(ly, r.Y, r.Y+r.H)
	83	+	d := dxdx + dydy
	84	+	if best < 0 \|\| d < bestD {
	85	+	best, bestD = i, d
	86	+	}
	87	+	}
	88	+	return best
	89	+	}
	90	+
	91	+	// nearestX is nearest in X space.
	92	+	func (s *Space) nearestX(x, y int) int {
	93	+	best, bestD := -1, 0
	94	+	for i := 0; i < s.n; i++ {
	95	+	r := s.regions[i].X
	96	+	dx := axisGap(x, r.X, r.X+r.W)
	97	+	dy := axisGap(y, r.Y, r.Y+r.H)
	98	+	d := dxdx + dydy
	99	+	if best < 0 \|\| d < bestD {
	100	+	best, bestD = i, d
	101	+	}
	102	+	}
	103	+	return best
	104	+	}
	105	+
	106	+	// axisGap is the distance from v to [lo, hi): 0 inside.
	107	+	func axisGap(v, lo, hi int) int {
	108	+	if v < lo {
	109	+	return lo - v
	110	+	}
	111	+	if v >= hi {
	112	+	return v - hi + 1
	113	+	}
	114	+	return 0
	115	+	}
	116	+
	117	+	// ToX converts a layout point to X, through the nearest region.
	118	+	func (s *Space) ToX(lx, ly int) (x, y int) {
	119	+	i := s.nearest(lx, ly)
	120	+	if i < 0 {
	121	+	return lx, ly
	122	+	}
	123	+	r := &s.regions[i]
	124	+	return r.X.X + lx - r.Layout.X, r.X.Y + ly - r.Layout.Y
	125	+	}
	126	+
	127	+	// ToLayout converts an X point to layout coordinates.
	128	+	func (s *Space) ToLayout(x, y int) (lx, ly int) {
	129	+	i := s.nearestX(x, y)
	130	+	if i < 0 {
	131	+	return x, y
	132	+	}
	133	+	r := &s.regions[i]
	134	+	return r.Layout.X + x - r.X.X, r.Layout.Y + y - r.X.Y
	135	+	}

A internal/adapters/wayland/xwm/space_test.go +94 -0

@@ -0,0 +1,94 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"testing"
	5	+
	6	+	"github.com/bnema/neferwl/internal/ports"
	7	+	)
	8	+
	9	+	func out(x, y, w, h int) ports.OutputPlacement {
	10	+	return ports.OutputPlacement{X: x, Y: y, Width: w, Height: h, Scale: 1}
	11	+	}
	12	+
	13	+	func TestSpaceLayouts(t *testing.T) {
	14	+	tests := []struct {
	15	+	name string
	16	+	l ports.Layout
	17	+	w, h int
	18	+	lx, ly, x, y int
	19	+	}{
	20	+	{"single", ports.Layout{out(0, 0, 1920, 1080)}, 1920, 1080, 10, 20, 10, 20},
	21	+	{"side by side", ports.Layout{out(0, 0, 1920, 1080), out(1920, 0, 1280, 1024)}, 3200, 1080, 2000, 5, 2000, 5},
	22	+	{"left-of negative origin", ports.Layout{out(-640, 0, 640, 480), out(0, 0, 1920, 1080)}, 2560, 1080, -630, 20, 10, 20},
	23	+	{"above", ports.Layout{out(0, -500, 800, 500), out(0, 0, 800, 600)}, 800, 1100, 3, -400, 3, 100},
	24	+	{"below", ports.Layout{out(0, 0, 800, 600), out(0, 600, 800, 400)}, 800, 1000, 3, 700, 3, 700},
	25	+	{"hole nearest", ports.Layout{out(0, 0, 100, 100), out(300, 0, 100, 100)}, 400, 100, 120, 10, 120, 10},
	26	+	}
	27	+	for _, tc := range tests {
	28	+	t.Run(tc.name, func(t *testing.T) {
	29	+	var s Space
	30	+	if !s.Set(tc.l) {
	31	+	t.Fatal("first Set not changed")
	32	+	}
	33	+	if w, h := s.Size(); w != tc.w \|\| h != tc.h {
	34	+	t.Fatalf("size %dx%d, want %dx%d", w, h, tc.w, tc.h)
	35	+	}
	36	+	x, y := s.ToX(tc.lx, tc.ly)
	37	+	if x != tc.x \|\| y != tc.y {
	38	+	t.Fatalf("ToX = %d,%d want %d,%d", x, y, tc.x, tc.y)
	39	+	}
	40	+	if lx, ly := s.ToLayout(x, y); lx != tc.lx \|\| ly != tc.ly {
	41	+	t.Fatalf("round trip = %d,%d want %d,%d", lx, ly, tc.lx, tc.ly)
	42	+	}
	43	+	if s.Set(tc.l) {
	44	+	t.Fatal("identical Set reported changed")
	45	+	}
	46	+	})
	47	+	}
	48	+	}
	49	+
	50	+	func TestSpaceEmptyAndOrigin(t *testing.T) {
	51	+	var s Space
	52	+	if x, y := s.ToX(5, 6); x != 5 \|\| y != 6 {
	53	+	t.Fatalf("empty ToX = %d,%d", x, y)
	54	+	}
	55	+	s.Set(ports.Layout{out(-640, -20, 640, 480), out(0, 0, 1920, 1080)})
	56	+	if ox, oy := s.Origin(); ox != -640 \|\| oy != -20 {
	57	+	t.Fatalf("origin = %d,%d", ox, oy)
	58	+	}
	59	+	}
	60	+
	61	+	func TestSpaceSeventeenOutputs(t *testing.T) {
	62	+	l := make(ports.Layout, 17)
	63	+	for i := range l {
	64	+	l[i] = out(i*100, 0, 100, 100)
	65	+	}
	66	+	var s Space
	67	+	s.Set(l)
	68	+	if s.Dropped() != 1 {
	69	+	t.Fatalf("dropped = %d", s.Dropped())
	70	+	}
	71	+	if w, _ := s.Size(); w != 1600 {
	72	+	t.Fatalf("width = %d", w)
	73	+	}
	74	+	if x, _ := s.ToX(1550, 5); x != 1550 {
	75	+	t.Fatalf("ToX = %d", x)
	76	+	}
	77	+	}
	78	+
	79	+	func TestSpaceAllocations(t *testing.T) {
	80	+	l := ports.Layout{out(-640, 0, 640, 480), out(0, 0, 1920, 1080)}
	81	+	var s Space
	82	+	s.Set(l)
	83	+	n := testing.AllocsPerRun(100, func() {
	84	+	s.Set(l)
	85	+	x, y := s.ToX(-600, 10)
	86	+	x, y = s.ToLayout(x, y)
	87	+	_, _ = x, y
	88	+	_, _ = s.Origin()
	89	+	_, _ = s.Size()
	90	+	})
	91	+	if n != 0 {
	92	+	t.Fatalf("allocs = %v", n)
	93	+	}
	94	+	}

A internal/adapters/wayland/xwm/streams_test.go +183 -0

@@ -0,0 +1,183 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/hex"
	5	+	"os"
	6	+	"path/filepath"
	7	+	"runtime"
	8	+	"strings"
	9	+	"testing"
	10	+	"time"
	11	+
	12	+	"bnema.dev/xturbo/xproto"
	13	+	"github.com/stretchr/testify/require"
	14	+	)
	15	+
	16	+	// The recorded streams are the bytes an X server wrote to the XWM during a
	17	+	// steady-state session of one mapped window, captured from the scripted xpeer
	18	+	// (real encoded X packets: events, GetProperty replies). The scenario is
	19	+	// deterministic, so a replay meets the request sequence numbers it recorded.
	20	+	// They are not xtrace captures of a real Xwayland: xpeer speaks the same wire
	21	+	// protocol and keeps the fixture reproducible. Regenerate with
	22	+	//
	23	+	// XWM_UPDATE_STREAMS=1 go test ./internal/adapters/wayland/xwm -run TestRecordedStreams
	24	+	const (
	25	+	streamCycles = 400
	26	+	streamWarm = 20 // cycles replayed before measuring
	27	+	)
	28	+
	29	+	const streamWin = 0x500001
	30	+
	31	+	type streamKind struct {
	32	+	name string
	33	+	// perCycle is Events+Replies the XWM sees per cycle.
	34	+	perCycle int
	35	+	cycle func(hs *harness)
	36	+	}
	37	+
	38	+	var streamKinds = []streamKind{
	39	+	// A title notification the XWM answers with one GetProperty whose reply
	40	+	// equals the stored title.
	41	+	{"property_unchanged", 2, func(hs *harness) {
	42	+	before := hs.x.Stats().Replies
	43	+	hs.p.propertyNotify(streamWin, hs.p.atom("_NET_WM_NAME"), false)
	44	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Replies > before })
	45	+	}},
	46	+	// The same plus ConfigureNotify, FocusIn and MapNotify.
	47	+	{"steady", 5, func(hs *harness) {
	48	+	before := hs.x.Stats().Replies
	49	+	hs.p.propertyNotify(streamWin, hs.p.atom("_NET_WM_NAME"), false)
	50	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Replies > before })
	51	+	events := hs.x.Stats().Events
	52	+	hs.p.configureNotify(streamWin)
	53	+	hs.p.focusIn(streamWin)
	54	+	hs.p.mapNotify(streamWin)
	55	+	readUntil(hs.t, hs.x, func() bool { return hs.x.Stats().Events >= events+3 })
	56	+	}},
	57	+	}
	58	+
	59	+	// streamScenario boots, maps one window and parks the peer behind a poke so
	60	+	// nothing but the test writes to the XWM afterwards (an allocation count is
	61	+	// process-wide). The poke is part of the scenario, recorded or replayed.
	62	+	func streamScenario(t testing.T) harness {
	63	+	t.Helper()
	64	+	hs := newHarness(t, nil)
	65	+	hs.classic(streamWin)
	66	+	hs.mapAndWait(streamWin)
	67	+	// The steady state is a focused window: a FocusIn on it is not denied,
	68	+	// so no request depends on how events are batched into flushes. The
	69	+	// poke makes sure the focus requests are out before the peer pauses.
	70	+	hs.x.Focus(hs.x.tab.lookup(streamWin))
	71	+	poke(hs)
	72	+	return hs
	73	+	}
	74	+
	75	+	func poke(hs *harness) {
	76	+	hs.t.Helper()
	77	+	n := len(hs.p.requests())
	78	+	xproto.GetInputFocus(hs.x.conn.Buf())
	79	+	hs.x.flush()
	80	+	hs.p.waitReq(n, func(r xpeerReq) bool { return r.major == opGetInputFocus })
	81	+	}
	82	+
	83	+	func recordStream(t *testing.T, k streamKind) []byte {
	84	+	hs := streamScenario(t)
	85	+	poke(hs)
	86	+	hs.p.mu.Lock()
	87	+	hs.p.record = true
	88	+	hs.p.mu.Unlock()
	89	+	for i := 0; i < streamCycles; i++ {
	90	+	k.cycle(hs)
	91	+	}
	92	+	hs.p.mu.Lock()
	93	+	defer hs.p.mu.Unlock()
	94	+	hs.p.record = false
	95	+	return append([]byte(nil), hs.p.tap...)
	96	+	}
	97	+
	98	+	func streamPath(k streamKind) string {
	99	+	return filepath.Join("testdata", "streams", k.name+".hex")
	100	+	}
	101	+
	102	+	func loadStream(t *testing.T, k streamKind) []byte {
	103	+	t.Helper()
	104	+	text, err := os.ReadFile(streamPath(k))
	105	+	require.NoError(t, err)
	106	+	b, err := hex.DecodeString(strings.Join(strings.Fields(string(text)), ""))
	107	+	require.NoError(t, err)
	108	+	return b
	109	+	}
	110	+
	111	+	func encodeHex(b []byte) string {
	112	+	var sb strings.Builder
	113	+	for len(b) > 0 {
	114	+	n := min(32, len(b))
	115	+	sb.WriteString(hex.EncodeToString(b[:n]))
	116	+	sb.WriteByte('\n')
	117	+	b = b[n:]
	118	+	}
	119	+	return sb.String()
	120	+	}
	121	+
	122	+	func TestRecordedStreams(t *testing.T) {
	123	+	for _, k := range streamKinds {
	124	+	t.Run(k.name, func(t *testing.T) {
	125	+	got := recordStream(t, k)
	126	+	if os.Getenv("XWM_UPDATE_STREAMS") != "" {
	127	+	require.NoError(t, os.MkdirAll(filepath.Dir(streamPath(k)), 0o755))
	128	+	require.NoError(t, os.WriteFile(streamPath(k), []byte(encodeHex(got)), 0o644))
	129	+	}
	130	+	require.Equal(t, loadStream(t, k), got, "the committed stream no longer matches the protocol the XWM speaks")
	131	+	})
	132	+	}
	133	+	}
	134	+
	135	+	// replay feeds the recorded stream and reports the mallocs of the part after
	136	+	// the warm-up cycles.
	137	+	func replay(t testing.T, k streamKind) (mallocs uint64, hs harness) {
	138	+	t.Helper()
	139	+	stream := loadStream(t, k)
	140	+	hs = streamScenario(t)
	141	+	hs.p.pause()
	142	+	poke(hs)
	143	+	_, err := hs.p.f.Write(stream)
	144	+	require.NoError(t, err)
	145	+
	146	+	x := hs.x
	147	+	base := x.Stats().Events + x.Stats().Replies
	148	+	drive := func(until uint64) {
	149	+	deadline := time.Now().Add(10 * time.Second)
	150	+	for x.Stats().Events+x.Stats().Replies < until {
	151	+	if time.Now().After(deadline) { // no formatting arguments: boxing them would count as mallocs
	152	+	t.Fatal("stream stalled")
	153	+	}
	154	+	before := x.Stats().Events + x.Stats().Replies
	155	+	x.onReadable()
	156	+	if x.Stats().Events+x.Stats().Replies == before {
	157	+	runtime.Gosched()
	158	+	}
	159	+	}
	160	+	}
	161	+	drive(base + uint64(streamWarm*k.perCycle))
	162	+	target := base + uint64(streamCycles*k.perCycle)
	163	+
	164	+	var m0, m1 runtime.MemStats
	165	+	runtime.GC()
	166	+	runtime.ReadMemStats(&m0)
	167	+	drive(target)
	168	+	runtime.ReadMemStats(&m1)
	169	+	require.Equal(t, target, x.Stats().Events+x.Stats().Replies)
	170	+	return m1.Mallocs - m0.Mallocs, hs
	171	+	}
	172	+
	173	+	func TestPropertyUnchangedAllocations(t *testing.T) {
	174	+	m, hs := replay(t, streamKinds[0])
	175	+	require.Zero(t, m, "unchanged property cycles must not allocate")
	176	+	require.Equal(t, "net title", hs.x.tab.rec(hs.x.tab.lookup(streamWin)).title)
	177	+	}
	178	+
	179	+	func TestDispatchAllocations(t *testing.T) {
	180	+	m, hs := replay(t, streamKinds[1])
	181	+	require.Zero(t, m, "steady-state event dispatch must not allocate")
	182	+	require.True(t, hs.x.tab.rec(hs.x.tab.lookup(streamWin)).mapped)
	183	+	}

A internal/adapters/wayland/xwm/table.go +241 -0

@@ -0,0 +1,241 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"math/bits"
	5	+
	6	+	"github.com/bnema/neferwl/internal/ports"
	7	+	)
	8	+
	9	+	// Record kinds.
	10	+	const (
	11	+	kindFree uint8 = iota
	12	+	kindManaged
	13	+	kindUnmanaged
	14	+	)
	15	+
	16	+	const (
	17	+	initialSlots = 256
	18	+	// maxSlots bounds the table: a Slot travels in the low 16 bits of an
	19	+	// Expect argument.
	20	+	maxSlots = 1<<16 - 1
	21	+	indexGone = 0xFFFFFFFF // tombstone in table.index
	22	+	)
	23	+
	24	+	// pending is the configure state not yet (or last) sent to the X server.
	25	+	type pending struct {
	26	+	x, y int32
	27	+	w, h uint32
	28	+	fullscreen, activated, dirty bool
	29	+	}
	30	+
	31	+	// ovRect is a layout rectangle.
	32	+	type ovRect struct{ x, y, w, h int32 }
	33	+
	34	+	// record is one X window known to the XWM. Strings are the only per-record
	35	+	// heap data.
	36	+	type record struct {
	37	+	xid uint32
	38	+	id ports.WindowID
	39	+	kind uint8
	40	+	gen uint16 // bumped on insert; stale Expect replies are told apart by it
	41	+
	42	+	// X state
	43	+	mapped, mapping, ready bool
	44	+	x, y int32
	45	+	w, h uint32
	46	+
	47	+	// properties
	48	+	pending uint16 // propMask bits still awaited
	49	+	input, deleteWindow, takeFocus bool
	50	+	wtype uint8
	51	+	modal, fullscreen bool
	52	+	transient uint32 // xid
	53	+	pid int32
	54	+	minW, minH, maxW, maxH int32
	55	+	title, class string // owned, replaced only on change
	56	+	hasNetName bool
	57	+	floating bool // dialog-like type; set with the properties
	58	+	sized bool // the client asked for its size before Ready
	59	+
	60	+	// pairing
	61	+	serial uint64
	62	+	surface uint64
	63	+
	64	+	// layout position of a managed window, from Place
	65	+	lx, ly int32
	66	+	placed bool
	67	+
	68	+	// unmanaged (override-redirect) windows
	69	+	noInput bool // tooltip, DND, notification: never takes the pointer
	70	+	ovPaired bool // OverrideMapped sent, OverrideGone owed
	71	+	ovQueued bool // slot is in XWM.ovDirty
	72	+	ov ovRect // layout rect last sent to the host
	73	+
	74	+	// configure
	75	+	pend, sent pending
	76	+	stateSent uint8 // _NET_WM_STATE bits last written
	77	+	}
	78	+
	79	+	// table is a slab of records with an open-addressing index by X id. No Go map.
	80	+	type table struct {
	81	+	recs []record // slab, len == cap, power of two
	82	+	free []uint32 // free slot indices (LIFO)
	83	+	index []uint32 // slot+1, 0 empty, indexGone tombstone; len == 2*len(recs)
	84	+	shift uint8
	85	+	n int
	86	+	tombs int
	87	+	}
	88	+
	89	+	func newTable(size int) *table {
	90	+	t := &table{}
	91	+	t.resize(size)
	92	+	return t
	93	+	}
	94	+
	95	+	// resize reallocates the slab, free list and index for size records and
	96	+	// reindexes the live ones.
	97	+	func (t *table) resize(size int) {
	98	+	old := t.recs
	99	+	t.recs = make([]record, size)
	100	+	copy(t.recs, old)
	101	+	t.free = make([]uint32, 0, size)
	102	+	for i := min(size, maxSlots) - 1; i >= 0; i-- {
	103	+	if i >= len(old) \|\| old[i].kind == kindFree {
	104	+	t.free = append(t.free, uint32(i))
	105	+	}
	106	+	}
	107	+	t.index = make([]uint32, 2*size)
	108	+	t.shift = uint8(32 - bits.TrailingZeros(uint(len(t.index))))
	109	+	t.reindex()
	110	+	}
	111	+
	112	+	// reindex rebuilds the index from the live records, dropping tombstones.
	113	+	// It does not allocate.
	114	+	func (t *table) reindex() {
	115	+	clear(t.index)
	116	+	t.tombs = 0
	117	+	for i := range t.recs {
	118	+	if t.recs[i].kind != kindFree {
	119	+	t.indexAdd(t.recs[i].xid, uint32(i)+1)
	120	+	}
	121	+	}
	122	+	}
	123	+
	124	+	func (t table) hash(xid uint32) uint32 { return (xid 0x9E3779B1) >> t.shift }
	125	+
	126	+	// indexAdd places slot for xid, which must be absent, in the first empty or
	127	+	// tombstone position of its probe sequence.
	128	+	func (t *table) indexAdd(xid, slot uint32) {
	129	+	mask := uint32(len(t.index) - 1)
	130	+	for i := t.hash(xid); ; i = (i + 1) & mask {
	131	+	switch t.index[i] {
	132	+	case 0:
	133	+	t.index[i] = slot
	134	+	return
	135	+	case indexGone:
	136	+	t.index[i] = slot
	137	+	t.tombs--
	138	+	return
	139	+	}
	140	+	}
	141	+	}
	142	+
	143	+	// grow doubles the table. It reports false at maxSlots.
	144	+	func (t *table) grow() bool {
	145	+	if len(t.recs) >= 1<<16 {
	146	+	return false
	147	+	}
	148	+	t.resize(2 * len(t.recs))
	149	+	return len(t.free) > 0
	150	+	}
	151	+
	152	+	// insert returns the slot of xid, creating a managed record (generation
	153	+	// bumped) when absent. It returns 0 when the table is full. Growth is the
	154	+	// only allocation.
	155	+	func (t *table) insert(xid uint32) Slot {
	156	+	if s := t.lookup(xid); s != 0 {
	157	+	return s
	158	+	}
	159	+	if len(t.free) == 0 && !t.grow() {
	160	+	return 0
	161	+	}
	162	+	i := t.free[len(t.free)-1]
	163	+	t.free = t.free[:len(t.free)-1]
	164	+	if t.n+t.tombs+1 > len(t.index)/4*3 { // keep an empty index cell for lookup to stop at
	165	+	t.reindex()
	166	+	}
	167	+	r := &t.recs[i]
	168	+	gen := r.gen + 1
	169	+	if gen == 0 {
	170	+	gen = 1
	171	+	}
	172	+	*r = record{xid: xid, kind: kindManaged, gen: gen, input: true}
	173	+	t.indexAdd(xid, i+1)
	174	+	t.n++
	175	+	return Slot(i + 1)
	176	+	}
	177	+
	178	+	// remove frees s. The record is zeroed except its generation.
	179	+	func (t *table) remove(s Slot) {
	180	+	r := t.rec(s)
	181	+	if r == nil \|\| r.kind == kindFree {
	182	+	return
	183	+	}
	184	+	mask := uint32(len(t.index) - 1)
	185	+	for i := t.hash(r.xid); ; i = (i + 1) & mask {
	186	+	v := t.index[i]
	187	+	if v == 0 {
	188	+	break
	189	+	}
	190	+	if v == uint32(s) {
	191	+	t.index[i] = indexGone
	192	+	t.tombs++
	193	+	break
	194	+	}
	195	+	}
	196	+	*r = record{gen: r.gen}
	197	+	t.free = append(t.free, uint32(s)-1)
	198	+	t.n--
	199	+	if t.n+t.tombs > len(t.index)/4*3 {
	200	+	t.reindex()
	201	+	}
	202	+	}
	203	+
	204	+	// lookup returns the slot of xid, or 0.
	205	+	func (t *table) lookup(xid uint32) Slot {
	206	+	mask := uint32(len(t.index) - 1)
	207	+	for i := t.hash(xid); ; i = (i + 1) & mask {
	208	+	v := t.index[i]
	209	+	if v == 0 {
	210	+	return 0
	211	+	}
	212	+	if v != indexGone && t.recs[v-1].xid == xid {
	213	+	return Slot(v)
	214	+	}
	215	+	}
	216	+	}
	217	+
	218	+	// rec returns the record of s, or nil when s is out of range. The pointer is
	219	+	// valid only until the next insert, host call or anything else that can grow
	220	+	// the table or free s: never hold it across those, fetch it again with rec(s).
	221	+	func (t table) rec(s Slot) record {
	222	+	if s == 0 \|\| int(s) > len(t.recs) {
	223	+	return nil
	224	+	}
	225	+	return &t.recs[s-1]
	226	+	}
	227	+
	228	+	// tag is the Expect argument naming s: slot in the low 16 bits, generation
	229	+	// in the high 16.
	230	+	func (t *table) tag(s Slot) uint32 { return uint32(s) \| uint32(t.recs[s-1].gen)<<16 }
	231	+
	232	+	// live resolves an Expect tag. It returns nil when the slot was freed or
	233	+	// reused since the request was sent.
	234	+	func (t table) live(tag uint32) (Slot, record) {
	235	+	s := Slot(tag & 0xFFFF)
	236	+	r := t.rec(s)
	237	+	if r == nil \|\| r.kind == kindFree \|\| r.gen != uint16(tag>>16) {
	238	+	return 0, nil
	239	+	}
	240	+	return s, r
	241	+	}

A internal/adapters/wayland/xwm/table_test.go +138 -0

@@ -0,0 +1,138 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"math/rand/v2"
	5	+	"testing"
	6	+
	7	+	"github.com/stretchr/testify/require"
	8	+	)
	9	+
	10	+	func TestTableAgainstMap(t *testing.T) {
	11	+	rng := rand.New(rand.NewPCG(1, 2))
	12	+	tab := newTable(initialSlots)
	13	+	model := map[uint32]Slot{}
	14	+	var xids []uint32
	15	+	for i := 0; i < 10000; i++ {
	16	+	switch op := rng.IntN(3); {
	17	+	case op < 2 \|\| len(xids) == 0:
	18	+	xid := rng.Uint32()&0x1fffff \| 0x200000
	19	+	if _, ok := model[xid]; ok {
	20	+	continue
	21	+	}
	22	+	s := tab.insert(xid)
	23	+	require.NotZero(t, s)
	24	+	model[xid] = s
	25	+	xids = append(xids, xid)
	26	+	default:
	27	+	k := rng.IntN(len(xids))
	28	+	xid := xids[k]
	29	+	xids[k] = xids[len(xids)-1]
	30	+	xids = xids[:len(xids)-1]
	31	+	tab.remove(model[xid])
	32	+	delete(model, xid)
	33	+	}
	34	+	if i%500 == 0 {
	35	+	for xid, s := range model {
	36	+	require.Equal(t, s, tab.lookup(xid))
	37	+	}
	38	+	require.Zero(t, tab.lookup(rng.Uint32()\|1<<31))
	39	+	}
	40	+	}
	41	+	require.Equal(t, len(model), tab.n)
	42	+	for xid, s := range model {
	43	+	require.Equal(t, s, tab.lookup(xid))
	44	+	require.Equal(t, xid, tab.rec(s).xid)
	45	+	}
	46	+	}
	47	+
	48	+	func TestTableGrowth(t *testing.T) {
	49	+	tab := newTable(initialSlots)
	50	+	slots := make([]Slot, 0, initialSlots+1)
	51	+	for i := 0; i < initialSlots; i++ {
	52	+	slots = append(slots, tab.insert(uint32(0x200000+i)))
	53	+	}
	54	+	require.Len(t, tab.recs, initialSlots)
	55	+	tab.rec(slots[7]).title = "kept"
	56	+	slots = append(slots, tab.insert(0x300000))
	57	+	require.Len(t, tab.recs, 2*initialSlots)
	58	+	require.Len(t, tab.index, 4*initialSlots)
	59	+	for i, s := range slots[:initialSlots] {
	60	+	require.Equal(t, s, tab.lookup(uint32(0x200000+i)))
	61	+	}
	62	+	require.Equal(t, "kept", tab.rec(slots[7]).title, "growth keeps records")
	63	+	require.Equal(t, slots[initialSlots], tab.lookup(0x300000))
	64	+	}
	65	+
	66	+	func TestTableTombstoneReuse(t *testing.T) {
	67	+	tab := newTable(initialSlots)
	68	+	for i := 0; i < 5000; i++ { // far more churn than slots: tombstones must be recycled
	69	+	s := tab.insert(uint32(0x200000 + i))
	70	+	require.NotZero(t, s)
	71	+	require.Equal(t, s, tab.lookup(uint32(0x200000+i)))
	72	+	tab.remove(s)
	73	+	require.Zero(t, tab.lookup(uint32(0x200000+i)))
	74	+	}
	75	+	require.Len(t, tab.recs, initialSlots)
	76	+	require.Zero(t, tab.n)
	77	+	}
	78	+
	79	+	func TestTableGenerationAndTag(t *testing.T) {
	80	+	tab := newTable(initialSlots)
	81	+	s := tab.insert(0x200001)
	82	+	tag := tab.tag(s)
	83	+	got, rec := tab.live(tag)
	84	+	require.Equal(t, s, got)
	85	+	require.NotNil(t, rec)
	86	+	tab.remove(s)
	87	+	_, rec = tab.live(tag)
	88	+	require.Nil(t, rec, "freed slot")
	89	+	s2 := tab.insert(0x200002)
	90	+	require.Equal(t, s, s2, "LIFO free list reuses the slot")
	91	+	_, rec = tab.live(tag)
	92	+	require.Nil(t, rec, "stale tag after slot reuse")
	93	+	_, rec = tab.live(tab.tag(s2))
	94	+	require.NotNil(t, rec)
	95	+	}
	96	+
	97	+	func TestTableFull(t *testing.T) {
	98	+	tab := newTable(initialSlots)
	99	+	for i := 0; i < maxSlots; i++ {
	100	+	require.NotZero(t, tab.insert(uint32(i+1)), i)
	101	+	}
	102	+	require.Zero(t, tab.insert(0xFFFFFF), "table is bounded by the 16-bit slot in Expect tags")
	103	+	require.Equal(t, Slot(maxSlots), tab.lookup(maxSlots))
	104	+	}
	105	+
	106	+	func TestTableInsertExisting(t *testing.T) {
	107	+	tab := newTable(initialSlots)
	108	+	s := tab.insert(5)
	109	+	require.Equal(t, s, tab.insert(5))
	110	+	require.Equal(t, 1, tab.n)
	111	+	}
	112	+
	113	+	func TestTableLookupAllocations(t *testing.T) {
	114	+	tab := newTable(initialSlots)
	115	+	for i := 0; i < 200; i++ {
	116	+	tab.insert(uint32(0x200000 + i))
	117	+	}
	118	+	var sink Slot
	119	+	n := testing.AllocsPerRun(1000, func() {
	120	+	sink += tab.lookup(0x200010)
	121	+	sink += tab.lookup(0x7fffffff) // absent
	122	+	_, r := tab.live(tab.tag(3))
	123	+	if r != nil {
	124	+	sink++
	125	+	}
	126	+	})
	127	+	require.Zero(t, n)
	128	+	require.NotZero(t, sink)
	129	+	}
	130	+
	131	+	func TestTableInsertRemoveAllocations(t *testing.T) {
	132	+	tab := newTable(initialSlots)
	133	+	n := testing.AllocsPerRun(1000, func() {
	134	+	s := tab.insert(0x200001)
	135	+	tab.remove(s)
	136	+	})
	137	+	require.Zero(t, n)
	138	+	}

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A internal/adapters/wayland/xwm/unmanaged.go +109 -0

@@ -0,0 +1,109 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"bnema.dev/xturbo"
	5	+	"bnema.dev/xturbo/xproto"
	6	+	)
	7	+
	8	+	// Override-redirect windows are tracked, never managed: the XWM reads their
	9	+	// window type once at map, pairs them with their wl_surface and reports the
	10	+	// mapped rect to the host in layout coordinates.
	11	+
	12	+	// maxTypeWords bounds the _NET_WM_WINDOW_TYPE read.
	13	+	const maxTypeWords = 32
	14	+
	15	+	// requestOverrideType asks for the window type of a freshly mapped override
	16	+	// window; the reply completes its readiness.
	17	+	func (x *XWM) requestOverrideType(s Slot) {
	18	+	rec := x.tab.rec(s)
	19	+	seq := xproto.GetProperty(x.conn.Buf(), false, xproto.Window(rec.xid),
	20	+	xproto.Atom(x.atoms[atomNetWMWindowType]), xproto.AtomAny, 0, maxTypeWords)
	21	+	x.expect(seq, kindOverrideType, x.tab.tag(s), 0)
	22	+	x.wake()
	23	+	}
	24	+
	25	+	func (x XWM) onOverrideType(s Slot, rec record, r *xturbo.Reply) {
	26	+	rec.noInput = false
	27	+	if rep, ok := xproto.ParseGetPropertyReply(r.Raw); ok && rep.Format() == 32 {
	28	+	val := rep.Value()
	29	+	for i := 0; i+4 <= len(val); i += 4 {
	30	+	switch x.windowType(word(val, i/4)) {
	31	+	case atomNetWMWindowTypeTooltip, atomNetWMWindowTypeNotification, atomNetWMWindowTypeDND:
	32	+	rec.noInput = true
	33	+	}
	34	+	}
	35	+	}
	36	+	x.overrideReady(s)
	37	+	}
	38	+
	39	+	// overrideReady marks a mapped override window typed and pairs it.
	40	+	func (x *XWM) overrideReady(s Slot) {
	41	+	rec := x.tab.rec(s)
	42	+	if rec == nil \|\| rec.kind != kindUnmanaged \|\| !rec.mapped {
	43	+	return
	44	+	}
	45	+	rec.ready = true
	46	+	x.tryPair(s)
	47	+	x.overrideMapped(s, rec)
	48	+	}
	49	+
	50	+	// overrideMapped reports the window once it is mapped, typed and paired.
	51	+	func (x XWM) overrideMapped(s Slot, rec record) {
	52	+	if x.host == nil \|\| rec.ovPaired \|\| !rec.mapped \|\| !rec.ready \|\| rec.surface == 0 {
	53	+	return
	54	+	}
	55	+	rec.ovPaired = true
	56	+	rec.ov = x.layoutRect(rec)
	57	+	o := rec.ov
	58	+	x.host.OverrideMapped(s, rec.xid, rec.surface, int(o.x), int(o.y), int(o.w), int(o.h), rec.noInput)
	59	+	}
	60	+
	61	+	// overrideUnmapped ends the mapped life of an override window; a remap reads
	62	+	// the type again and pairs with a new surface.
	63	+	func (x XWM) overrideUnmapped(s Slot, rec record) {
	64	+	rec.ready, rec.serial, rec.surface, rec.noInput = false, 0, 0, false
	65	+	rec.gen++ // a type reply still in flight names a dead tag
	66	+	if rec.gen == 0 {
	67	+	rec.gen = 1
	68	+	}
	69	+	if rec.ovPaired {
	70	+	rec.ovPaired = false
	71	+	x.host.OverrideGone(s)
	72	+	}
	73	+	}
	74	+
	75	+	func (x XWM) layoutRect(rec record) ovRect {
	76	+	lx, ly := x.space.ToLayout(int(rec.x), int(rec.y))
	77	+	return ovRect{int32(lx), int32(ly), int32(rec.w), int32(rec.h)}
	78	+	}
	79	+
	80	+	// queueOverride schedules a geometry report for s; flushOverrides sends it
	81	+	// once per iteration, only if the layout rect changed.
	82	+	func (x XWM) queueOverride(s Slot, rec record) {
	83	+	if rec.ovQueued \|\| s == 0 {
	84	+	return
	85	+	}
	86	+	if len(x.ovDirty) == cap(x.ovDirty) {
	87	+	x.flushOverrides()
	88	+	}
	89	+	rec.ovQueued = true
	90	+	x.ovDirty = append(x.ovDirty, s)
	91	+	}
	92	+
	93	+	func (x *XWM) flushOverrides() {
	94	+	for _, s := range x.ovDirty {
	95	+	rec := x.tab.rec(s)
	96	+	if rec == nil \|\| rec.kind != kindUnmanaged \|\| !rec.ovQueued {
	97	+	continue
	98	+	}
	99	+	rec.ovQueued = false
	100	+	if !rec.ovPaired {
	101	+	continue
	102	+	}
	103	+	if o := x.layoutRect(rec); o != rec.ov {
	104	+	rec.ov = o
	105	+	x.host.OverrideMoved(s, int(o.x), int(o.y), int(o.w), int(o.h))
	106	+	}
	107	+	}
	108	+	x.ovDirty = x.ovDirty[:0]
	109	+	}

A internal/adapters/wayland/xwm/unmanaged_test.go +247 -0

@@ -0,0 +1,247 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"testing"
	6	+
	7	+	"bnema.dev/xturbo"
	8	+	"bnema.dev/xturbo/xproto"
	9	+	"github.com/bnema/neferwl/internal/ports"
	10	+	"github.com/stretchr/testify/require"
	11	+	)
	12	+
	13	+	func layoutOf(os ...ports.OutputPlacement) ports.Layout { return ports.Layout(os) }
	14	+
	15	+	func rootConfigureNotify(win uint32, x, y int16, w, h uint16) xturbo.Event {
	16	+	ev := xturbo.Event{Kind: xproto.KindConfigureNotify}
	17	+	binary.LittleEndian.PutUint32(ev.Raw[4:], peerRoot)
	18	+	binary.LittleEndian.PutUint32(ev.Raw[8:], win)
	19	+	binary.LittleEndian.PutUint16(ev.Raw[16:], uint16(x))
	20	+	binary.LittleEndian.PutUint16(ev.Raw[18:], uint16(y))
	21	+	binary.LittleEndian.PutUint16(ev.Raw[20:], w)
	22	+	binary.LittleEndian.PutUint16(ev.Raw[22:], h)
	23	+	return ev
	24	+	}
	25	+
	26	+	func (p *xpeer) rootConfigureNotify(win uint32, x, y int16, w, h uint16) {
	27	+	p.event(22, func(b *[32]byte) {
	28	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	29	+	binary.LittleEndian.PutUint32(b[8:], win)
	30	+	binary.LittleEndian.PutUint16(b[16:], uint16(x))
	31	+	binary.LittleEndian.PutUint16(b[18:], uint16(y))
	32	+	binary.LittleEndian.PutUint16(b[20:], w)
	33	+	binary.LittleEndian.PutUint16(b[22:], h)
	34	+	})
	35	+	}
	36	+
	37	+	func TestPlaceConvertsLayoutToXCoordinates(t *testing.T) {
	38	+	x, p, h, _, _ := attached(t)
	39	+	s := newWin(t, x, p, h, 0x500001)
	40	+	x.SetLayout(layoutOf(out(-640, 0, 640, 480), out(0, 0, 1920, 1080)))
	41	+	n := settle(t, x, p)
	42	+
	43	+	x.Place(s, -640+10, 20)
	44	+	settle(t, x, p)
	45	+	cw := since(p, n, opConfigureWindow)
	46	+	require.Len(t, cw, 1)
	47	+	require.EqualValues(t, 10, cw[0].u32(12))
	48	+	require.EqualValues(t, 20, cw[0].u32(16))
	49	+	}
	50	+
	51	+	func TestSetLayoutRepositionsPlacedWindows(t *testing.T) {
	52	+	x, p, h, _, _ := attached(t)
	53	+	s := newWin(t, x, p, h, 0x500001)
	54	+	x.SetLayout(layoutOf(out(0, 0, 1920, 1080)))
	55	+	x.Place(s, 100, 50)
	56	+	n := settle(t, x, p)
	57	+
	58	+	x.SetLayout(layoutOf(out(0, 0, 1920, 1080))) // unchanged: nothing resent
	59	+	settle(t, x, p)
	60	+	require.Empty(t, since(p, n, opConfigureWindow))
	61	+
	62	+	x.SetLayout(layoutOf(out(-100, 0, 100, 100), out(0, 0, 1920, 1080)))
	63	+	settle(t, x, p)
	64	+	cw := since(p, n, opConfigureWindow)
	65	+	require.Len(t, cw, 1)
	66	+	require.EqualValues(t, 200, cw[0].u32(12))
	67	+	require.EqualValues(t, 50, cw[0].u32(16))
	68	+	}
	69	+
	70	+	func TestSetLayoutWarnsOnceWhenOutputsDropped(t *testing.T) {
	71	+	x, _, _, _, _ := attached(t)
	72	+	var l ports.Layout
	73	+	for i := 0; i < maxRegions+2; i++ {
	74	+	l = append(l, out(i*100, 0, 100, 100))
	75	+	}
	76	+	x.SetLayout(l)
	77	+	require.True(t, x.warnedSpace)
	78	+	require.Equal(t, 2, x.space.Dropped())
	79	+	}
	80	+
	81	+	// overrideWindow creates and maps an override window, answers its type read
	82	+	// and pairs it; the mocked host must expect OverrideMapped beforehand.
	83	+	func overrideWindow(t testing.T, x XWM, p *xpeer, win uint32, typ string) Slot {
	84	+	t.Helper()
	85	+	if typ != "" {
	86	+	p.setProp(win, p.atom("_NET_WM_WINDOW_TYPE"), uint32(xproto.AtomAtom), 32, le32(p.atom(typ)))
	87	+	}
	88	+	p.createNotify(win, true)
	89	+	readUntil(t, x, func() bool { return x.tab.lookup(win) != 0 })
	90	+	s := x.tab.lookup(win)
	91	+	x.feed(t, p, func() { p.rootConfigureNotify(win, 30, 40, 100, 50) })
	92	+	x.feed(t, p, func() { p.mapNotify(win) })
	93	+	return s
	94	+	}
	95	+
	96	+	func TestUnmanagedMapReadsTypeThenPairsThenReports(t *testing.T) {
	97	+	x, p, h, _, _ := attached(t)
	98	+	x.SetLayout(layoutOf(out(-640, 0, 640, 480), out(0, 0, 1920, 1080)))
	99	+	const win = 0x500009
	100	+	s := overrideWindow(t, x, p, win, "_NET_WM_WINDOW_TYPE_TOOLTIP")
	101	+	x.flush()
	102	+	readUntil(t, x, func() bool { return x.tab.rec(s).ready })
	103	+	typeReads := 0
	104	+	for _, q := range p.requests() {
	105	+	if q.major == opGetProperty && q.u32(4) == win {
	106	+	typeReads++
	107	+	}
	108	+	}
	109	+	require.Equal(t, 1, typeReads)
	110	+
	111	+	h.EXPECT().OverrideMapped(s, uint32(win), uint64(7), -640+30, 40, 100, 50, true).Once()
	112	+	x.SetSerial(7, 9)
	113	+	x.feed(t, p, func() { p.clientMessage(win, p.atom("WL_SURFACE_SERIAL"), 9, 0) })
	114	+	require.True(t, x.tab.rec(s).ovPaired)
	115	+	}
	116	+
	117	+	func TestUnmanagedDefaultTypeTakesInput(t *testing.T) {
	118	+	x, p, h, _, _ := attached(t)
	119	+	x.SetLayout(layoutOf(out(0, 0, 1920, 1080)))
	120	+	const win = 0x500009
	121	+	s := overrideWindow(t, x, p, win, "_NET_WM_WINDOW_TYPE_POPUP_MENU")
	122	+	x.SetSerial(7, 9)
	123	+	h.EXPECT().OverrideMapped(s, uint32(win), uint64(7), 30, 40, 100, 50, false).Once()
	124	+	x.feed(t, p, func() { p.clientMessage(win, p.atom("WL_SURFACE_SERIAL"), 9, 0) })
	125	+	readUntil(t, x, func() bool { return x.tab.rec(s).ovPaired })
	126	+	}
	127	+
	128	+	func TestUnmanagedMoveAndLayoutChangeAndUnmap(t *testing.T) {
	129	+	x, p, h, _, _ := attached(t)
	130	+	x.SetLayout(layoutOf(out(0, 0, 1920, 1080)))
	131	+	const win = 0x500009
	132	+	s := overrideWindow(t, x, p, win, "")
	133	+	x.SetSerial(7, 9)
	134	+	h.EXPECT().OverrideMapped(s, uint32(win), uint64(7), 30, 40, 100, 50, false).Once()
	135	+	x.feed(t, p, func() { p.clientMessage(win, p.atom("WL_SURFACE_SERIAL"), 9, 0) })
	136	+	readUntil(t, x, func() bool { return x.tab.rec(s).ovPaired })
	137	+
	138	+	h.EXPECT().OverrideMoved(s, 35, 45, 100, 60).Once()
	139	+	x.feed(t, p, func() { p.rootConfigureNotify(win, 35, 45, 100, 60) })
	140	+	x.flush()
	141	+	x.feed(t, p, func() { p.rootConfigureNotify(win, 35, 45, 100, 60) }) // same rect: no call
	142	+	x.flush()
	143	+
	144	+	h.EXPECT().OverrideMoved(s, -65, 45, 100, 60).Once() // the layout origin moved: same X point, new layout point
	145	+	x.SetLayout(layoutOf(out(-100, 0, 100, 100), out(0, 0, 1920, 1080)))
	146	+	x.flush()
	147	+
	148	+	h.EXPECT().OverrideGone(s).Once()
	149	+	x.feed(t, p, func() { p.unmapNotify(win, false) })
	150	+	require.False(t, x.tab.rec(s).ovPaired)
	151	+	}
	152	+
	153	+	func TestUnmanagedDestroyReportsGone(t *testing.T) {
	154	+	x, p, h, _, _ := attached(t)
	155	+	const win = 0x500009
	156	+	s := overrideWindow(t, x, p, win, "")
	157	+	x.SetSerial(7, 9)
	158	+	h.EXPECT().OverrideMapped(s, uint32(win), uint64(7), 30, 40, 100, 50, false).Once()
	159	+	x.feed(t, p, func() { p.clientMessage(win, p.atom("WL_SURFACE_SERIAL"), 9, 0) })
	160	+	readUntil(t, x, func() bool { return x.tab.rec(s).ovPaired })
	161	+	h.EXPECT().OverrideGone(s).Once()
	162	+	x.feed(t, p, func() { p.destroyNotify(win) })
	163	+	require.Zero(t, x.tab.lookup(win))
	164	+	}
	165	+
	166	+	func TestFocusInIgnoresUnmanagedAndGrabModes(t *testing.T) {
	167	+	x, p, h, _, _ := attached(t)
	168	+	sa := newWin(t, x, p, h, 0x500001)
	169	+	newWin(t, x, p, h, 0x500002)
	170	+	x.Focus(sa)
	171	+	p.createNotify(0x500009, true)
	172	+	readUntil(t, x, func() bool { return x.tab.lookup(0x500009) != 0 })
	173	+	n := settle(t, x, p)
	174	+
	175	+	focusIn := func(win uint32, mode byte) {
	176	+	p.event(9, func(e *[32]byte) {
	177	+	binary.LittleEndian.PutUint32(e[4:], win)
	178	+	e[8] = mode
	179	+	})
	180	+	}
	181	+	x.feed(t, p, func() { focusIn(0x500009, 0) })
	182	+	x.feed(t, p, func() { focusIn(0x500002, byte(xproto.NotifyModeGrab)) })
	183	+	x.feed(t, p, func() { focusIn(0x500002, byte(xproto.NotifyModeUngrab)) })
	184	+	require.False(t, x.refocus)
	185	+	settle(t, x, p)
	186	+	require.Empty(t, since(p, n, opSetInputFocus))
	187	+
	188	+	x.feed(t, p, func() { focusIn(0x500002, 0) })
	189	+	settle(t, x, p)
	190	+	require.Len(t, since(p, n, opSetInputFocus), 1, "a normal FocusIn on another managed window is still denied")
	191	+	}
	192	+
	193	+	func TestWMChangeStateIgnored(t *testing.T) {
	194	+	x, p, h, _, _ := attached(t)
	195	+	newWin(t, x, p, h, 0x500001)
	196	+	n := settle(t, x, p)
	197	+	x.feed(t, p, func() { p.clientMessage(0x500001, p.atom("WM_CHANGE_STATE"), 3) })
	198	+	settle(t, x, p)
	199	+	require.Empty(t, since(p, n, opConfigureWindow)) // the mocked host sees no call either
	200	+	}
	201	+
	202	+	func TestUnmanagedGeometryAllocations(t *testing.T) {
	203	+	x, p, _, _, _ := attached(t)
	204	+	x.SetLayout(layoutOf(out(0, 0, 1920, 1080)))
	205	+	s := x.insert(0x500009)
	206	+	r := x.tab.rec(s)
	207	+	r.kind, r.mapped, r.ready, r.ovPaired = kindUnmanaged, true, true, true
	208	+	r.x, r.y, r.w, r.h = 30, 40, 100, 50
	209	+	r.ov = x.layoutRect(r)
	210	+	sinkPeer(t, x, p)
	211	+	a := rootConfigureNotify(0x500009, 31, 41, 100, 50)
	212	+	b := rootConfigureNotify(0x500009, 30, 40, 100, 50) // back to the reported rect
	213	+	allocs := testing.AllocsPerRun(1000, func() {
	214	+	x.onEvent(&a)
	215	+	x.onEvent(&b)
	216	+	x.flush()
	217	+	})
	218	+	require.Zero(t, allocs)
	219	+	require.True(t, r.ovPaired)
	220	+	}
	221	+
	222	+	func TestFocusInUnmanagedAllocations(t *testing.T) {
	223	+	x, p, _, _, _ := attached(t)
	224	+	s := x.insert(0x500009)
	225	+	x.tab.rec(s).kind = kindUnmanaged
	226	+	sinkPeer(t, x, p)
	227	+	ev := xturbo.Event{Kind: xproto.KindFocusIn}
	228	+	binary.LittleEndian.PutUint32(ev.Raw[4:], 0x500009)
	229	+	grab := ev
	230	+	grab.Raw[8] = byte(xproto.NotifyModeGrab)
	231	+	allocs := testing.AllocsPerRun(1000, func() {
	232	+	x.onEvent(&ev)
	233	+	x.onEvent(&grab)
	234	+	x.flush()
	235	+	})
	236	+	require.Zero(t, allocs)
	237	+	require.False(t, x.refocus)
	238	+	}
	239	+
	240	+	func TestDropWindowClearsQueuedOverride(t *testing.T) {
	241	+	x, _, _, _, _ := attached(t)
	242	+	s := x.insert(0x500009)
	243	+	r := x.tab.rec(s)
	244	+	r.kind, r.ovQueued = kindUnmanaged, true
	245	+	x.dropWindow(s)
	246	+	require.False(t, r.ovQueued)
	247	+	}

A internal/adapters/wayland/xwm/xpeer_test.go +594 -0

@@ -0,0 +1,594 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"encoding/binary"
	5	+	"io"
	6	+	"os"
	7	+	"sync"
	8	+	"sync/atomic"
	9	+	"testing"
	10	+	"time"
	11	+
	12	+	"golang.org/x/sys/unix"
	13	+	)
	14	+
	15	+	// Opcodes the peer understands.
	16	+	const (
	17	+	opCreateWindow = 1
	18	+	opChangeWindowAttributes = 2
	19	+	opGetWindowAttributes = 3
	20	+	opMapWindow = 8
	21	+	opDeleteProperty = 19
	22	+	opConfigureWindow = 12
	23	+	opGetGeometry = 14
	24	+	opQueryTree = 15
	25	+	opInternAtom = 16
	26	+	opChangeProperty = 18
	27	+	opGetProperty = 20
	28	+	opSetSelectionOwner = 22
	29	+	opSendEvent = 25
	30	+	opSetInputFocus = 42
	31	+	opGetInputFocus = 43
	32	+	opQueryExtension = 98
	33	+	opKillClient = 113
	34	+	)
	35	+
	36	+	const (
	37	+	peerRoot = 0x100
	38	+	peerXIDBase = 0x200000
	39	+	peerXIDMask = 0x1fffff
	40	+	peerMaxWords = 0x100000
	41	+	)
	42	+
	43	+	type xpeerExt struct{ major, firstEvent, firstError uint8 }
	44	+
	45	+	// xpeerReq is one request the peer received.
	46	+	type xpeerReq struct {
	47	+	seq uint16
	48	+	major uint8
	49	+	minor uint8
	50	+	raw []byte // whole request, header included
	51	+	}
	52	+
	53	+	func (r xpeerReq) u32(off int) uint32 { return binary.LittleEndian.Uint32(r.raw[off:]) }
	54	+
	55	+	type xpeerProp struct {
	56	+	typ uint32
	57	+	format uint8
	58	+	data []byte
	59	+	}
	60	+
	61	+	type xpeerGeom struct {
	62	+	x, y int16
	63	+	w, h, border uint16
	64	+	}
	65	+
	66	+	// xpeer is a scripted X server speaking the real wire protocol over a
	67	+	// socketpair: setup, extension queries, atoms, properties, geometry, window
	68	+	// tree. It records every request. It is a protocol peer, not a test double of
	69	+	// a project interface.
	70	+	type xpeer struct {
	71	+	t *testing.T
	72	+	f *os.File
	73	+
	74	+	mu sync.Mutex
	75	+	seq uint16
	76	+	reqs []xpeerReq
	77	+	exts map[string]xpeerExt
	78	+	atoms map[string]uint32
	79	+	nextAtom uint32
	80	+	props map[uint32]map[uint32]xpeerProp
	81	+	geoms map[uint32]xpeerGeom
	82	+	attrs map[uint32][2]byte // window -> {overrideRedirect, mapState}
	83	+	children []uint32
	84	+	denyRoot bool // answer the root event-mask request with BadAccess
	85	+	pids map[uint32]uint32 // XRes QueryClientIds answers, by window
	86	+	bad map[uint32]bool // windows whose GetProperty/GetGeometry fail with BadWindow
	87	+	hold bool // keep replies until release
	88	+	held [][]byte
	89	+	tap []byte // everything written to the client, when recording
	90	+	record bool
	91	+
	92	+	gate atomic.Pointer[chan struct{}] // closed = reading allowed
	93	+	sbuf [4096]byte
	94	+	sink atomic.Bool // discard requests without recording or allocating
	95	+	done chan struct{}
	96	+	}
	97	+
	98	+	func fullPeerExts() map[string]xpeerExt {
	99	+	return map[string]xpeerExt{
	100	+	"BIG-REQUESTS": {133, 0, 0},
	101	+	"XC-MISC": {136, 0, 0},
	102	+	"Composite": {142, 0, 0},
	103	+	"XFIXES": {138, 87, 140},
	104	+	"X-Resource": {144, 0, 0},
	105	+	}
	106	+	}
	107	+
	108	+	// startXPeer returns the client end of a socketpair, to give to Boot, and the
	109	+	// peer serving the other end.
	110	+	func startXPeer(t testing.T, exts map[string]xpeerExt) (int, xpeer) {
	111	+	t.Helper()
	112	+	fds, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM\|unix.SOCK_CLOEXEC, 0)
	113	+	if err != nil {
	114	+	t.Fatal(err)
	115	+	}
	116	+	p := &xpeer{
	117	+	t: t, f: os.NewFile(uintptr(fds[1]), "xpeer"),
	118	+	exts: exts, atoms: map[string]uint32{}, nextAtom: 1000,
	119	+	props: map[uint32]map[uint32]xpeerProp{}, geoms: map[uint32]xpeerGeom{}, attrs: map[uint32][2]byte{},
	120	+	pids: map[uint32]uint32{}, bad: map[uint32]bool{},
	121	+	done: make(chan struct{}),
	122	+	}
	123	+	open := make(chan struct{})
	124	+	close(open)
	125	+	p.gate.Store(&open)
	126	+	t.Cleanup(func() {
	127	+	p.resume() // a paused peer would never see the close
	128	+	p.f.Close()
	129	+	<-p.done
	130	+	})
	131	+	go p.serve()
	132	+	return fds[0], p
	133	+	}
	134	+
	135	+	func (p *xpeer) setupReply() []byte {
	136	+	vendor := []byte("xpeer\x00\x00\x00")
	137	+	b := make([]byte, 40+len(vendor)+40)
	138	+	b[0], b[2] = 1, 11
	139	+	binary.LittleEndian.PutUint16(b[6:], uint16((len(b)-8)/4))
	140	+	binary.LittleEndian.PutUint32(b[12:], peerXIDBase)
	141	+	binary.LittleEndian.PutUint32(b[16:], peerXIDMask)
	142	+	binary.LittleEndian.PutUint16(b[24:], 5)
	143	+	b[28] = 1
	144	+	copy(b[40:], vendor)
	145	+	scr := b[40+len(vendor):]
	146	+	binary.LittleEndian.PutUint32(scr, peerRoot)
	147	+	binary.LittleEndian.PutUint32(scr[32:], 0x22) // root visual
	148	+	scr[38] = 24 // root depth
	149	+	return b
	150	+	}
	151	+
	152	+	func (p *xpeer) serve() {
	153	+	defer close(p.done)
	154	+	var hdr [12]byte
	155	+	if _, err := io.ReadFull(p.f, hdr[:]); err != nil {
	156	+	return
	157	+	}
	158	+	// Auth name and data are empty (NewConn sends none).
	159	+	if _, err := p.f.Write(p.setupReply()); err != nil {
	160	+	return
	161	+	}
	162	+	for {
	163	+	<-*p.gate.Load()
	164	+	if p.sink.Load() {
	165	+	if !p.discard() {
	166	+	return
	167	+	}
	168	+	continue
	169	+	}
	170	+	var h [4]byte
	171	+	if _, err := io.ReadFull(p.f, h[:]); err != nil {
	172	+	return
	173	+	}
	174	+	raw := h[:]
	175	+	n := int(binary.LittleEndian.Uint16(h[2:])) * 4
	176	+	if n == 0 { // BIG-REQUESTS header
	177	+	var l [4]byte
	178	+	if _, err := io.ReadFull(p.f, l[:]); err != nil {
	179	+	return
	180	+	}
	181	+	raw = append(raw, l[:]...)
	182	+	n = int(binary.LittleEndian.Uint32(l[:])) * 4
	183	+	}
	184	+	rest := make([]byte, n-len(raw))
	185	+	if _, err := io.ReadFull(p.f, rest); err != nil {
	186	+	return
	187	+	}
	188	+	raw = append(append([]byte(nil), raw...), rest...)
	189	+	p.mu.Lock()
	190	+	p.seq++
	191	+	r := xpeerReq{p.seq, h[0], h[1], raw}
	192	+	p.reqs = append(p.reqs, r)
	193	+	p.answer(r, raw[len(raw)-len(rest):])
	194	+	p.mu.Unlock()
	195	+	}
	196	+	}
	197	+
	198	+	// discard reads and drops one request without allocating. It reports false
	199	+	// when the connection ended.
	200	+	func (p *xpeer) discard() bool {
	201	+	if _, err := io.ReadFull(p.f, p.sbuf[:4]); err != nil {
	202	+	return false
	203	+	}
	204	+	n := int(binary.LittleEndian.Uint16(p.sbuf[2:])) * 4
	205	+	left := n - 4
	206	+	if n == 0 {
	207	+	if _, err := io.ReadFull(p.f, p.sbuf[:4]); err != nil {
	208	+	return false
	209	+	}
	210	+	left = int(binary.LittleEndian.Uint32(p.sbuf[:4]))*4 - 8
	211	+	}
	212	+	for left > 0 {
	213	+	m, err := p.f.Read(p.sbuf[:min(left, len(p.sbuf))])
	214	+	if err != nil {
	215	+	return false
	216	+	}
	217	+	left -= m
	218	+	}
	219	+	return true
	220	+	}
	221	+
	222	+	// write sends bytes to the client. The caller holds p.mu.
	223	+	func (p *xpeer) write(b []byte) {
	224	+	if p.record {
	225	+	p.tap = append(p.tap, b...)
	226	+	}
	227	+	_, _ = p.f.Write(b)
	228	+	}
	229	+
	230	+	func (p *xpeer) reply(data uint8, body []byte) {
	231	+	words := (max(len(body), 24) - 24 + 3) / 4
	232	+	b := make([]byte, 32+4*words)
	233	+	b[0], b[1] = 1, data
	234	+	binary.LittleEndian.PutUint16(b[2:], p.seq)
	235	+	binary.LittleEndian.PutUint32(b[4:], uint32(words))
	236	+	copy(b[8:], body)
	237	+	if p.hold {
	238	+	p.held = append(p.held, b)
	239	+	return
	240	+	}
	241	+	p.write(b)
	242	+	}
	243	+
	244	+	// release sends the held replies, in request order as a real server does.
	245	+	func (p *xpeer) release() {
	246	+	p.mu.Lock()
	247	+	defer p.mu.Unlock()
	248	+	p.hold = false
	249	+	for _, b := range p.held {
	250	+	p.write(b)
	251	+	}
	252	+	p.held = nil
	253	+	}
	254	+
	255	+	// holdReplies keeps the replies of the following requests back.
	256	+	func (p *xpeer) holdReplies() {
	257	+	p.mu.Lock()
	258	+	p.hold = true
	259	+	p.mu.Unlock()
	260	+	}
	261	+
	262	+	func (p *xpeer) errorPacket(code, major uint8, bad uint32) {
	263	+	b := make([]byte, 32)
	264	+	b[1] = code
	265	+	binary.LittleEndian.PutUint16(b[2:], p.seq)
	266	+	binary.LittleEndian.PutUint32(b[4:], bad)
	267	+	b[10] = major
	268	+	p.write(b)
	269	+	}
	270	+
	271	+	func (p *xpeer) extName(major uint8) string {
	272	+	for name, e := range p.exts {
	273	+	if e.major == major {
	274	+	return name
	275	+	}
	276	+	}
	277	+	return ""
	278	+	}
	279	+
	280	+	func le32(v ...uint32) []byte {
	281	+	b := make([]byte, 0, 4*len(v))
	282	+	for _, x := range v {
	283	+	b = binary.LittleEndian.AppendUint32(b, x)
	284	+	}
	285	+	return b
	286	+	}
	287	+
	288	+	// answer runs with p.mu held.
	289	+	func (p *xpeer) answer(r xpeerReq, body []byte) {
	290	+	switch {
	291	+	case r.major == opQueryExtension:
	292	+	e, ok := p.exts[string(body[4:4+binary.LittleEndian.Uint16(body)])]
	293	+	var present uint8
	294	+	if ok {
	295	+	present = 1
	296	+	}
	297	+	p.reply(0, []byte{present, e.major, e.firstEvent, e.firstError})
	298	+	case r.major == opInternAtom:
	299	+	name := string(body[4 : 4+binary.LittleEndian.Uint16(body)])
	300	+	a, ok := p.atoms[name]
	301	+	if !ok {
	302	+	p.nextAtom++
	303	+	a = p.nextAtom
	304	+	p.atoms[name] = a
	305	+	}
	306	+	p.reply(0, le32(a))
	307	+	case r.major == opGetInputFocus:
	308	+	p.reply(1, le32(0))
	309	+	case r.major == opQueryTree:
	310	+	b := make([]byte, 24+4*len(p.children))
	311	+	binary.LittleEndian.PutUint32(b[0:], peerRoot)
	312	+	binary.LittleEndian.PutUint16(b[8:], uint16(len(p.children)))
	313	+	for i, c := range p.children {
	314	+	binary.LittleEndian.PutUint32(b[24+4*i:], c)
	315	+	}
	316	+	p.reply(0, b)
	317	+	case r.major == opGetWindowAttributes:
	318	+	a := p.attrs[binary.LittleEndian.Uint32(body)]
	319	+	b := make([]byte, 36) // reply length 3
	320	+	b[18] = a[1] // map_state is byte 26 of the reply
	321	+	b[19] = a[0] // override_redirect, byte 27
	322	+	p.reply(0, b)
	323	+	case r.major == opGetGeometry && p.bad[binary.LittleEndian.Uint32(body)]:
	324	+	p.errorPacket(9, r.major, binary.LittleEndian.Uint32(body)) // BadDrawable
	325	+	case r.major == opGetProperty && p.bad[binary.LittleEndian.Uint32(body)]:
	326	+	p.errorPacket(3, r.major, binary.LittleEndian.Uint32(body)) // BadWindow
	327	+	case r.major == opConfigureWindow:
	328	+	g := p.geoms[binary.LittleEndian.Uint32(body)]
	329	+	mask, vals := binary.LittleEndian.Uint16(body[4:]), body[8:]
	330	+	for bit, dst := 0, []any{&g.x, &g.y, &g.w, &g.h, &g.border}; bit < 5; bit++ {
	331	+	if mask&(1<<bit) == 0 {
	332	+	continue
	333	+	}
	334	+	v := uint16(binary.LittleEndian.Uint32(vals))
	335	+	vals = vals[4:]
	336	+	switch d := dst[bit].(type) {
	337	+	case *int16:
	338	+	*d = int16(v)
	339	+	case *uint16:
	340	+	*d = v
	341	+	}
	342	+	}
	343	+	p.geoms[binary.LittleEndian.Uint32(body)] = g
	344	+	case r.major == opGetGeometry:
	345	+	g := p.geoms[binary.LittleEndian.Uint32(body)]
	346	+	b := make([]byte, 24)
	347	+	binary.LittleEndian.PutUint32(b[0:], peerRoot)
	348	+	binary.LittleEndian.PutUint16(b[4:], uint16(g.x))
	349	+	binary.LittleEndian.PutUint16(b[6:], uint16(g.y))
	350	+	binary.LittleEndian.PutUint16(b[8:], g.w)
	351	+	binary.LittleEndian.PutUint16(b[10:], g.h)
	352	+	binary.LittleEndian.PutUint16(b[12:], g.border)
	353	+	p.reply(24, b)
	354	+	case r.major == opChangeProperty:
	355	+	win, prop := binary.LittleEndian.Uint32(body), binary.LittleEndian.Uint32(body[4:])
	356	+	format, n := body[12], int(binary.LittleEndian.Uint32(body[16:]))
	357	+	if p.props[win] == nil {
	358	+	p.props[win] = map[uint32]xpeerProp{}
	359	+	}
	360	+	p.props[win][prop] = xpeerProp{
	361	+	typ: binary.LittleEndian.Uint32(body[8:]), format: format,
	362	+	data: append([]byte(nil), body[20:20+n*int(format)/8]...),
	363	+	}
	364	+	case r.major == opDeleteProperty:
	365	+	delete(p.props[binary.LittleEndian.Uint32(body)], binary.LittleEndian.Uint32(body[4:]))
	366	+	case r.major == opGetProperty:
	367	+	win, prop := binary.LittleEndian.Uint32(body), binary.LittleEndian.Uint32(body[4:])
	368	+	v, ok := p.props[win][prop]
	369	+	b := make([]byte, 24+(len(v.data)+3)&^3)
	370	+	if ok && v.format != 0 {
	371	+	binary.LittleEndian.PutUint32(b[0:], v.typ)
	372	+	binary.LittleEndian.PutUint32(b[8:], uint32(len(v.data)/(int(v.format)/8)))
	373	+	copy(b[24:], v.data)
	374	+	}
	375	+	p.reply(v.format, b)
	376	+	case r.major == opChangeWindowAttributes:
	377	+	const cwEventMask = 1 << 11
	378	+	if p.denyRoot && binary.LittleEndian.Uint32(body) == peerRoot && binary.LittleEndian.Uint32(body[4:])&cwEventMask != 0 {
	379	+	p.errorPacket(10, opChangeWindowAttributes, peerRoot) // BadAccess
	380	+	}
	381	+	case r.major >= 128:
	382	+	switch p.extName(r.major) {
	383	+	case "BIG-REQUESTS":
	384	+	p.reply(0, le32(peerMaxWords))
	385	+	case "XC-MISC":
	386	+	if r.minor == 1 {
	387	+	p.reply(0, le32(0, 1))
	388	+	}
	389	+	case "Composite", "XFIXES":
	390	+	if r.minor == 0 {
	391	+	p.reply(0, le32(5, 4))
	392	+	}
	393	+	case "X-Resource":
	394	+	switch r.minor {
	395	+	case 0:
	396	+	p.reply(0, []byte{1, 0, 2, 0})
	397	+	case 4: // QueryClientIds: one spec, answered when a pid is scripted
	398	+	pid, ok := p.pids[r.u32(8)]
	399	+	if !ok {
	400	+	p.reply(0, le32(0))
	401	+	break
	402	+	}
	403	+	b := make([]byte, 40)
	404	+	binary.LittleEndian.PutUint32(b[0:], 1)
	405	+	binary.LittleEndian.PutUint32(b[24:], r.u32(8))
	406	+	binary.LittleEndian.PutUint32(b[28:], 2) // LocalClientPID
	407	+	binary.LittleEndian.PutUint32(b[32:], 4)
	408	+	binary.LittleEndian.PutUint32(b[36:], pid)
	409	+	p.reply(0, b)
	410	+	}
	411	+	}
	412	+	}
	413	+	}
	414	+
	415	+	// requests returns a snapshot of every request received after setup.
	416	+	func (p *xpeer) requests() []xpeerReq {
	417	+	p.mu.Lock()
	418	+	defer p.mu.Unlock()
	419	+	return append([]xpeerReq(nil), p.reqs...)
	420	+	}
	421	+
	422	+	// waitReq waits for a request satisfying match among those after the first
	423	+	// skip requests, and returns it with the new count.
	424	+	func (p *xpeer) waitReq(skip int, match func(xpeerReq) bool) (xpeerReq, int) {
	425	+	p.t.Helper()
	426	+	deadline := time.Now().Add(5 * time.Second)
	427	+	for time.Now().Before(deadline) {
	428	+	reqs := p.requests()
	429	+	for i := skip; i < len(reqs); i++ {
	430	+	if match(reqs[i]) {
	431	+	return reqs[i], i + 1
	432	+	}
	433	+	}
	434	+	time.Sleep(time.Millisecond)
	435	+	}
	436	+	p.t.Fatal("xpeer: expected request never arrived")
	437	+	return xpeerReq{}, 0
	438	+	}
	439	+
	440	+	func (p *xpeer) atom(name string) uint32 {
	441	+	p.mu.Lock()
	442	+	defer p.mu.Unlock()
	443	+	return p.atoms[name]
	444	+	}
	445	+
	446	+	func (p *xpeer) prop(win uint32, atom string) (xpeerProp, bool) {
	447	+	p.mu.Lock()
	448	+	defer p.mu.Unlock()
	449	+	v, ok := p.props[win][p.atoms[atom]]
	450	+	return v, ok
	451	+	}
	452	+
	453	+	// event sends a 32-byte core event stamped with the current sequence number.
	454	+	func (p xpeer) event(code uint8, fill func(b [32]byte)) {
	455	+	p.mu.Lock()
	456	+	defer p.mu.Unlock()
	457	+	var b [32]byte
	458	+	b[0] = code
	459	+	binary.LittleEndian.PutUint16(b[2:], p.seq)
	460	+	if fill != nil {
	461	+	fill(&b)
	462	+	}
	463	+	p.write(b[:])
	464	+	}
	465	+
	466	+	func (p *xpeer) createNotify(win uint32, override bool) {
	467	+	p.event(16, func(b *[32]byte) {
	468	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	469	+	binary.LittleEndian.PutUint32(b[8:], win)
	470	+	binary.LittleEndian.PutUint16(b[16:], 100)
	471	+	binary.LittleEndian.PutUint16(b[18:], 50)
	472	+	if override {
	473	+	b[22] = 1
	474	+	}
	475	+	})
	476	+	}
	477	+
	478	+	func (p *xpeer) destroyNotify(win uint32) {
	479	+	p.event(17, func(b *[32]byte) {
	480	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	481	+	binary.LittleEndian.PutUint32(b[8:], win)
	482	+	})
	483	+	}
	484	+
	485	+	// pause makes the peer stop reading after the request it is serving.
	486	+	func (p *xpeer) pause() {
	487	+	g := make(chan struct{})
	488	+	p.gate.Store(&g)
	489	+	}
	490	+
	491	+	// resume lets the peer read again.
	492	+	func (p *xpeer) resume() {
	493	+	g := *p.gate.Load()
	494	+	open := make(chan struct{})
	495	+	close(open)
	496	+	p.gate.Store(&open)
	497	+	select {
	498	+	case <-g:
	499	+	default:
	500	+	close(g)
	501	+	}
	502	+	}
	503	+
	504	+	// set mutates the peer's script under its lock.
	505	+	func (p xpeer) set(fn func(p xpeer)) {
	506	+	p.mu.Lock()
	507	+	defer p.mu.Unlock()
	508	+	fn(p)
	509	+	}
	510	+
	511	+	// hangup closes the server end; the client reads EOF.
	512	+	func (p *xpeer) hangup() {
	513	+	if rc, err := p.f.SyscallConn(); err == nil {
	514	+	_ = rc.Control(func(fd uintptr) { _ = unix.Shutdown(int(fd), unix.SHUT_RDWR) })
	515	+	}
	516	+	}
	517	+
	518	+	// setProp scripts a window property for GetProperty.
	519	+	func (p *xpeer) setProp(win, atom, typ uint32, format uint8, data []byte) {
	520	+	p.mu.Lock()
	521	+	defer p.mu.Unlock()
	522	+	if p.props[win] == nil {
	523	+	p.props[win] = map[uint32]xpeerProp{}
	524	+	}
	525	+	p.props[win][atom] = xpeerProp{typ: typ, format: format, data: data}
	526	+	}
	527	+
	528	+	func (p *xpeer) mapRequest(win uint32) {
	529	+	p.event(20, func(b *[32]byte) {
	530	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	531	+	binary.LittleEndian.PutUint32(b[8:], win)
	532	+	})
	533	+	}
	534	+
	535	+	func (p *xpeer) mapNotify(win uint32) {
	536	+	p.event(19, func(b *[32]byte) {
	537	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	538	+	binary.LittleEndian.PutUint32(b[8:], win)
	539	+	})
	540	+	}
	541	+
	542	+	func (p *xpeer) unmapNotify(win uint32, synthetic bool) {
	543	+	p.event(18, func(b *[32]byte) {
	544	+	if synthetic {
	545	+	b[0] \|= 0x80
	546	+	}
	547	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	548	+	binary.LittleEndian.PutUint32(b[8:], win)
	549	+	})
	550	+	}
	551	+
	552	+	func (p *xpeer) propertyNotify(win, atom uint32, deleted bool) {
	553	+	p.event(28, func(b *[32]byte) {
	554	+	binary.LittleEndian.PutUint32(b[4:], win)
	555	+	binary.LittleEndian.PutUint32(b[8:], atom)
	556	+	if deleted {
	557	+	b[16] = 1
	558	+	}
	559	+	})
	560	+	}
	561	+
	562	+	func (p *xpeer) reparentNotify(win, parent uint32) {
	563	+	p.event(21, func(b *[32]byte) {
	564	+	binary.LittleEndian.PutUint32(b[4:], peerRoot)
	565	+	binary.LittleEndian.PutUint32(b[8:], win)
	566	+	binary.LittleEndian.PutUint32(b[12:], parent)
	567	+	})
	568	+	}
	569	+
	570	+	func (p *xpeer) clientMessage(win, typ uint32, data ...uint32) {
	571	+	p.event(33, func(b *[32]byte) {
	572	+	b[1] = 32
	573	+	binary.LittleEndian.PutUint32(b[4:], win)
	574	+	binary.LittleEndian.PutUint32(b[8:], typ)
	575	+	for i, d := range data {
	576	+	binary.LittleEndian.PutUint32(b[12+4*i:], d)
	577	+	}
	578	+	})
	579	+	}
	580	+
	581	+	func (p *xpeer) focusIn(win uint32) {
	582	+	p.event(9, func(b *[32]byte) { binary.LittleEndian.PutUint32(b[4:], win) })
	583	+	}
	584	+
	585	+	func (p *xpeer) configureNotify(win uint32) {
	586	+	p.event(22, func(b *[32]byte) {
	587	+	binary.LittleEndian.PutUint32(b[4:], win)
	588	+	binary.LittleEndian.PutUint32(b[8:], win)
	589	+	binary.LittleEndian.PutUint16(b[20:], 10)
	590	+	binary.LittleEndian.PutUint16(b[22:], 20)
	591	+	binary.LittleEndian.PutUint16(b[24:], 300)
	592	+	binary.LittleEndian.PutUint16(b[26:], 200)
	593	+	})
	594	+	}

A internal/adapters/wayland/xwm/xwm.go +451 -0

@@ -0,0 +1,451 @@
	1	+	// Package xwm is the built-in X11 window manager for Xwayland: it speaks the
	2	+	// X protocol over the -wm socket with xturbo and reports managed windows to
	3	+	// the Wayland server through the unexported host interface.
	4	+	//
	5	+	// Threading: Boot runs on the starter goroutine and blocks. The XWM it returns
	6	+	// is then handed to the display goroutine, which owns it exclusively; nothing
	7	+	// in this package is locked.
	8	+	package xwm
	9	+
	10	+	import (
	11	+	"context"
	12	+	"encoding/binary"
	13	+	"errors"
	14	+	"fmt"
	15	+	"io"
	16	+	"os"
	17	+
	18	+	"bnema.dev/xturbo"
	19	+	"bnema.dev/xturbo/composite"
	20	+	"bnema.dev/xturbo/res"
	21	+	"bnema.dev/xturbo/xfixes"
	22	+	"bnema.dev/xturbo/xproto"
	23	+	"github.com/bnema/purego-libwayland/server"
	24	+	"github.com/bnema/zerowrap"
	25	+	"golang.org/x/sys/unix"
	26	+	)
	27	+
	28	+	var (
	29	+	// ErrWMExists is returned by Boot when another client already redirects
	30	+	// the root window's children.
	31	+	ErrWMExists = errors.New("xwm: another window manager owns the root window")
	32	+	// ErrNoComposite is returned by Boot when the X server lacks Composite.
	33	+	ErrNoComposite = errors.New("xwm: X server has no Composite extension")
	34	+	)
	35	+
	36	+	// Stats are connection and event counters, for diagnostics.
	37	+	type Stats struct {
	38	+	Events, Replies, Errors, Unattributed, Stale, RingFull, LegacyID, UnmanagedSeen uint64
	39	+	}
	40	+
	41	+	// Version request ids, carried in the first Expect argument of kindVersion.
	42	+	const (
	43	+	versionComposite uint32 = iota + 1
	44	+	versionXFixes
	45	+	versionRes
	46	+	)
	47	+
	48	+	const unpairedCap = 64
	49	+
	50	+	// XWM manages the windows of one Xwayland. Display goroutine only, after Boot.
	51	+	type XWM struct {
	52	+	conn *xturbo.Conn
	53	+	log zerowrap.Logger
	54	+	root uint32
	55	+	wmWin uint32
	56	+	atoms [atomCount]uint32
	57	+	tab *table
	58	+	h xturbo.Handler
	59	+	stats Stats
	60	+
	61	+	// attachment
	62	+	host host
	63	+	src fdSource
	64	+	post func(func())
	65	+	flushFn func()
	66	+
	67	+	posted, writable, closed bool
	68	+	bootErr error
	69	+	warnedRing, warnedFull bool
	70	+	warnedUnpaired bool
	71	+
	72	+	scratch []byte // encode buffer for 32-bit property values, 4 bytes per slot
	73	+
	74	+	// Shared by the map, configure and focus flows.
	75	+	dirty []Slot // slots with a pending configure, capacity == table size
	76	+	clients []uint32 // _NET_CLIENT_LIST, map order
	77	+	stacking []uint32 // _NET_CLIENT_LIST_STACKING, bottom to top
	78	+	active Slot // slot named by _NET_ACTIVE_WINDOW, 0 = none
	79	+	refocus bool // a FocusIn was denied; focus is re-issued in flush
	80	+	listsDirty uint8 // client lists to rewrite in flush
	81	+	unpaired [unpairedCap]struct{ serial, surface uint64 }
	82	+	unpairedN int
	83	+
	84	+	space *Space // layout <-> X coordinates, shared with the host
	85	+	warnedSpace bool // more outputs than the Space holds, logged once
	86	+	ovDirty []Slot // mapped unmanaged slots whose geometry changed, capacity == table size
	87	+	}
	88	+
	89	+	func newXWM(conn xturbo.Conn, log zerowrap.Logger) XWM {
	90	+	x := &XWM{conn: conn, log: log, root: conn.Root(), tab: newTable(initialSlots), space: new(Space)}
	91	+	x.h = xturbo.Handler{OnEvent: x.onEvent, OnReply: x.onReply, OnError: x.onError}
	92	+	x.fit()
	93	+	return x
	94	+	}
	95	+
	96	+	// fit sizes the per-slot buffers to the table; called after every insert.
	97	+	func (x *XWM) fit() {
	98	+	n := len(x.tab.recs)
	99	+	if cap(x.dirty) < n {
	100	+	x.dirty = append(make([]Slot, 0, n), x.dirty...)
	101	+	x.clients = append(make([]uint32, 0, n), x.clients...)
	102	+	x.ovDirty = append(make([]Slot, 0, n), x.ovDirty...)
	103	+	x.stacking = append(make([]uint32, 0, n), x.stacking...)
	104	+	x.scratch = make([]byte, 0, 4*n)
	105	+	}
	106	+	}
	107	+
	108	+	// insert adds a record for xid; 0 means the table is full.
	109	+	func (x *XWM) insert(xid uint32) Slot {
	110	+	s := x.tab.insert(xid)
	111	+	if s == 0 {
	112	+	if !x.warnedFull {
	113	+	x.warnedFull = true
	114	+	x.log.Warn().Int("windows", x.tab.n).Msg("X11 window table full, window ignored")
	115	+	}
	116	+	return 0
	117	+	}
	118	+	x.fit()
	119	+	return s
	120	+	}
	121	+
	122	+	// expect registers seq, tolerating a full ring: the reply then arrives
	123	+	// unattributed and is dropped.
	124	+	func (x *XWM) expect(seq xturbo.Seq, kind uint16, a0, a1 uint32) {
	125	+	if seq == 0 {
	126	+	return
	127	+	}
	128	+	if err := x.conn.Expect(seq, kind, a0, a1, 0, 0); err != nil {
	129	+	x.stats.RingFull++
	130	+	if !x.warnedRing {
	131	+	x.warnedRing = true
	132	+	x.log.Warn().Err(err).Msg("X11 request not tracked")
	133	+	}
	134	+	}
	135	+	}
	136	+
	137	+	// setProp32 queues ChangeProperty (replace, format 32) for vals.
	138	+	func (x *XWM) setProp32(win uint32, prop int, typ xproto.Atom, vals []uint32) {
	139	+	n := 4 * len(vals)
	140	+	if cap(x.scratch) < n {
	141	+	x.scratch = make([]byte, 0, n)
	142	+	}
	143	+	p := x.scratch[:n]
	144	+	for i, v := range vals {
	145	+	binary.LittleEndian.PutUint32(p[4*i:], v)
	146	+	}
	147	+	xproto.ChangeProperty(x.conn.Buf(), xproto.PropModeReplace, xproto.Window(win),
	148	+	xproto.Atom(x.atoms[prop]), typ, 32, uint32(len(vals)), p)
	149	+	}
	150	+
	151	+	// Boot connects to the X server on wmFD and becomes its window manager. It
	152	+	// blocks (about 25 s at worst) and must not run on the display goroutine: the
	153	+	// handshake needs Xwayland, which needs the display goroutine to serve its
	154	+	// Wayland requests. It takes ownership of wmFD and closes it on failure.
	155	+	// Boot gives up promptly when ctx ends (the Xwayland process died or the run
	156	+	// was cancelled). log is scoped by the caller with logging.For(ctx, "xwm").
	157	+	func Boot(ctx context.Context, wmFD int, log zerowrap.Logger) (*XWM, error) {
	158	+	// The watcher shuts the socket down when ctx ends, which wakes any blocked
	159	+	// handshake, Sync or InternAtoms. It holds its own duplicate so a shutdown
	160	+	// can never reach a descriptor number reused after Boot closed wmFD.
	161	+	var watch *os.File
	162	+	if dup, err := unix.FcntlInt(uintptr(wmFD), unix.F_DUPFD_CLOEXEC, 0); err == nil {
	163	+	watch = os.NewFile(uintptr(dup), "xwm abort")
	164	+	}
	165	+	stopWatch := func() {}
	166	+	if watch != nil {
	167	+	quit, joined := make(chan struct{}), make(chan struct{})
	168	+	go func() {
	169	+	defer close(joined)
	170	+	select {
	171	+	case <-ctx.Done():
	172	+	if rc, err := watch.SyscallConn(); err == nil {
	173	+	_ = rc.Control(func(fd uintptr) { _ = unix.Shutdown(int(fd), unix.SHUT_RDWR) })
	174	+	}
	175	+	case <-quit:
	176	+	}
	177	+	_ = watch.Close()
	178	+	}()
	179	+	stopWatch = func() { close(quit); <-joined }
	180	+	}
	181	+	x, err := boot(wmFD, log)
	182	+	stopWatch()
	183	+	if err == nil && ctx.Err() != nil {
	184	+	x.CloseConn()
	185	+	x, err = nil, ctx.Err()
	186	+	}
	187	+	if err != nil && ctx.Err() != nil {
	188	+	err = fmt.Errorf("%w (%w)", err, ctx.Err())
	189	+	}
	190	+	return x, err
	191	+	}
	192	+
	193	+	func boot(wmFD int, log zerowrap.Logger) (*XWM, error) {
	194	+	conn, err := xturbo.NewConn(wmFD)
	195	+	if err != nil {
	196	+	return nil, fmt.Errorf("xwm: connect: %w", err)
	197	+	}
	198	+	x := newXWM(conn, log)
	199	+	if err := x.boot(); err != nil {
	200	+	_ = conn.Close()
	201	+	return nil, err
	202	+	}
	203	+	return x, nil
	204	+	}
	205	+
	206	+	func (x *XWM) boot() error {
	207	+	conn := x.conn
	208	+	ext := conn.Ext()
	209	+	if !ext.Info(xturbo.ExtComposite).Present {
	210	+	return ErrNoComposite
	211	+	}
	212	+	var visual, depth uint32
	213	+	if it := xproto.NewSetupIter(conn.SetupBytes(), 1); it.Next() {
	214	+	if roots := it.Value().Roots(); roots.Next() {
	215	+	visual, depth = uint32(roots.Value().RootVisual()), uint32(roots.Value().RootDepth())
	216	+	}
	217	+	}
	218	+	x.log.Info().Uint32("root", x.root).Uint32("visual", visual).Uint32("depth", depth).
	219	+	Bool("xfixes", ext.Info(xturbo.ExtXFixes).Present).
	220	+	Bool("res", ext.Info(xturbo.ExtRes).Present).Msg("X server")
	221	+
	222	+	if err := conn.InternAtoms(atomNames[:], false, x.atoms[:]); err != nil {
	223	+	return fmt.Errorf("xwm: intern atoms: %w", err)
	224	+	}
	225	+	xid, err := conn.NewXID()
	226	+	if err != nil {
	227	+	return fmt.Errorf("xwm: allocate window id: %w", err)
	228	+	}
	229	+	x.wmWin = xid
	230	+
	231	+	b := conn.Buf()
	232	+	x.expect(composite.QueryVersion(b, 0, 4), kindVersion, versionComposite, 0)
	233	+	if ext.Info(xturbo.ExtXFixes).Present {
	234	+	x.expect(xfixes.QueryVersion(b, 6, 0), kindVersion, versionXFixes, 0)
	235	+	}
	236	+	if ext.Info(xturbo.ExtRes).Present {
	237	+	x.expect(res.QueryVersion(b, 1, 2), kindVersion, versionRes, 0)
	238	+	}
	239	+
	240	+	root := xproto.Window(x.root)
	241	+	var rootMask xproto.ChangeWindowAttributesValues
	242	+	rootMask.SetEventMask(xproto.EventMaskSubstructureRedirect \| xproto.EventMaskSubstructureNotify \| xproto.EventMaskPropertyChange)
	243	+	x.expect(xproto.ChangeWindowAttributes(b, root, &rootMask), kindRootMask, 0, 0)
	244	+	// Only one client may select SubstructureRedirect on the root: wait for
	245	+	// the answer before touching anything another window manager owns.
	246	+	if err := b.Err(); err != nil {
	247	+	return fmt.Errorf("xwm: encode root mask: %w", err)
	248	+	}
	249	+	if err := conn.Sync(&x.h); err != nil {
	250	+	return fmt.Errorf("xwm: root mask: %w", err)
	251	+	}
	252	+	if x.bootErr != nil {
	253	+	return x.bootErr
	254	+	}
	255	+	composite.RedirectSubwindows(b, root, composite.RedirectManual)
	256	+
	257	+	var wv xproto.CreateWindowValues
	258	+	wv.SetEventMask(0)
	259	+	xproto.CreateWindow(b, 0, xproto.Window(x.wmWin), root, -1, -1, 1, 1, 0, xproto.WindowClassInputOutput, 0, &wv)
	260	+	name := []byte("neferwl")
	261	+	xproto.ChangeProperty(b, xproto.PropModeReplace, xproto.Window(x.wmWin), xproto.Atom(x.atoms[atomNetWMName]),
	262	+	xproto.Atom(x.atoms[atomUTF8String]), 8, uint32(len(name)), name)
	263	+	x.setProp32(x.root, atomNetSupportingWMCheck, xproto.AtomWindow, []uint32{x.wmWin})
	264	+	x.setProp32(x.wmWin, atomNetSupportingWMCheck, xproto.AtomWindow, []uint32{x.wmWin})
	265	+	// CurrentTime and no MANAGER announcement: this Xwayland is private to
	266	+	// neferwl and nobody waits on these selections.
	267	+	xproto.SetSelectionOwner(b, xproto.Window(x.wmWin), xproto.Atom(x.atoms[atomWMS0]), 0)
	268	+	xproto.SetSelectionOwner(b, xproto.Window(x.wmWin), xproto.Atom(x.atoms[atomNetWMCMS0]), 0)
	269	+
	270	+	supported := [...]int{
	271	+	atomNetWMState, atomNetActiveWindow, atomNetWMStateFocused,
	272	+	atomNetWMStateModal, atomNetWMStateFullscreen, atomNetClientList,
	273	+	atomNetClientListStacking, atomNetSupportingWMCheck, atomNetWMName, atomNetWMPID,
	274	+	atomNetWMWindowType,
	275	+	}
	276	+	var list [len(supported)]uint32
	277	+	for i, a := range supported {
	278	+	list[i] = x.atoms[a]
	279	+	}
	280	+	x.setProp32(x.root, atomNetSupported, xproto.AtomAtom, list[:])
	281	+	x.setProp32(x.root, atomNetActiveWindow, xproto.AtomWindow, []uint32{0})
	282	+	x.setProp32(x.root, atomNetClientList, xproto.AtomWindow, nil)
	283	+	x.setProp32(x.root, atomNetClientListStacking, xproto.AtomWindow, nil)
	284	+	xproto.SetInputFocus(b, xproto.InputFocusNone, xproto.WindowNone, 0)
	285	+	if err := b.Err(); err != nil {
	286	+	return fmt.Errorf("xwm: encode setup requests: %w", err)
	287	+	}
	288	+	if err := conn.Sync(&x.h); err != nil {
	289	+	return fmt.Errorf("xwm: root setup: %w", err)
	290	+	}
	291	+	if x.bootErr != nil {
	292	+	return x.bootErr
	293	+	}
	294	+
	295	+	// Windows that exist already (Xwayland restarted under a live client set).
	296	+	x.expect(xproto.QueryTree(b, root), kindTree, 0, 0)
	297	+	if err := conn.Sync(&x.h); err != nil {
	298	+	return fmt.Errorf("xwm: query tree: %w", err)
	299	+	}
	300	+	return x.bootErr
	301	+	}
	302	+
	303	+	// Attach registers the X socket with the display and hands the windows found
	304	+	// at boot to h. Display goroutine only.
	305	+	func (x XWM) Attach(d server.Display, h host) error {
	306	+	src, err := d.AddFDRW(x.conn.Fd(), x.onReadable, x.onWritable)
	307	+	if err != nil {
	308	+	return fmt.Errorf("xwm: watch X socket: %w", err)
	309	+	}
	310	+	x.attach(src, h, d.Post)
	311	+	return nil
	312	+	}
	313	+
	314	+	// attach is Attach over its seams: the event source and the display's Post.
	315	+	func (x *XWM) attach(src fdSource, h host, post func(func())) {
	316	+	x.src, x.host, x.post = src, h, post
	317	+	x.flushFn = func() {
	318	+	x.posted = false
	319	+	x.flush()
	320	+	}
	321	+	for i := range x.tab.recs {
	322	+	r := &x.tab.recs[i]
	323	+	if r.kind == kindUnmanaged && r.mapped && !r.ready { // mapped before Attach
	324	+	x.requestOverrideType(Slot(i + 1))
	325	+	}
	326	+	if r.kind != kindManaged \|\| r.id != 0 {
	327	+	continue
	328	+	}
	329	+	s := Slot(i + 1)
	330	+	x.adopt(s)
	331	+	if r.mapping { // MapRequest or viewable before Attach
	332	+	r.mapping = false
	333	+	x.beginMap(s)
	334	+	}
	335	+	}
	336	+	x.flush()
	337	+	}
	338	+
	339	+	// Close detaches from the display, drops every window from the host and closes
	340	+	// the X connection. Idempotent.
	341	+	func (x *XWM) Close() {
	342	+	if x.closed {
	343	+	return
	344	+	}
	345	+	x.closed = true
	346	+	s := x.stats
	347	+	x.log.Info().Uint64("events", s.Events).Uint64("replies", s.Replies).Uint64("errors", s.Errors).
	348	+	Uint64("unattributed", s.Unattributed).Uint64("stale", s.Stale).Uint64("ring_full", s.RingFull).
	349	+	Uint64("legacy_id", s.LegacyID).Uint64("unmanaged_seen", s.UnmanagedSeen).Msg("X11 window management closed")
	350	+	if x.src != nil {
	351	+	x.src.Remove()
	352	+	x.src = nil
	353	+	}
	354	+	if x.host != nil {
	355	+	for i := range x.tab.recs {
	356	+	r := &x.tab.recs[i]
	357	+	switch {
	358	+	case r.kind == kindManaged && r.id != 0:
	359	+	r.id = 0
	360	+	x.host.Dissociate(Slot(i+1), true)
	361	+	case r.kind == kindUnmanaged && r.ovPaired:
	362	+	r.ovPaired = false
	363	+	x.host.OverrideGone(Slot(i + 1))
	364	+	}
	365	+	}
	366	+	}
	367	+	x.unpairedN = 0
	368	+	_ = x.conn.Close()
	369	+	}
	370	+
	371	+	// CloseConn closes the connection of an XWM that was never attached.
	372	+	func (x *XWM) CloseConn() {
	373	+	if !x.closed {
	374	+	x.closed = true
	375	+	_ = x.conn.Close()
	376	+	}
	377	+	}
	378	+
	379	+	// fail ends window management after an unrecoverable connection error. Xwayland
	380	+	// keeps running; its windows no longer map.
	381	+	func (x *XWM) fail(err error) {
	382	+	if x.closed {
	383	+	return
	384	+	}
	385	+	if errors.Is(err, io.EOF) \|\| errors.Is(err, xturbo.ErrClosed) {
	386	+	x.log.Info().Err(err).Msg("X11 window management stopped: Xwayland closed the connection")
	387	+	} else {
	388	+	x.log.Warn().Err(err).Msg("X11 window management stopped")
	389	+	}
	390	+	x.Close()
	391	+	}
	392	+
	393	+	// Stats returns the counters; Close logs them.
	394	+	func (x *XWM) Stats() Stats { return x.stats }
	395	+
	396	+	func (x *XWM) onReadable() {
	397	+	if x.closed {
	398	+	return
	399	+	}
	400	+	if err := x.conn.Dispatch(&x.h); err != nil {
	401	+	x.fail(err)
	402	+	return
	403	+	}
	404	+	x.flush()
	405	+	}
	406	+
	407	+	func (x *XWM) onWritable() { x.flush() }
	408	+
	409	+	// wake schedules one flush at the end of the current display iteration.
	410	+	func (x *XWM) wake() {
	411	+	if x.posted \|\| x.closed \|\| x.post == nil {
	412	+	return
	413	+	}
	414	+	x.posted = true
	415	+	x.post(x.flushFn)
	416	+	}
	417	+
	418	+	// flush sends what the handlers queued: pending configures, an XID prefetch,
	419	+	// then the socket, arming POLLOUT only while it is full.
	420	+	func (x *XWM) flush() {
	421	+	if x.closed {
	422	+	return
	423	+	}
	424	+	x.flushConfigures()
	425	+	if x.conn.XIDsLow() {
	426	+	_ = x.conn.PrefetchXIDs()
	427	+	}
	428	+	err := x.conn.Flush()
	429	+	switch {
	430	+	case err == nil:
	431	+	if x.writable {
	432	+	x.setWritable(false)
	433	+	}
	434	+	case errors.Is(err, xturbo.ErrWouldBlock):
	435	+	if !x.writable {
	436	+	x.setWritable(true)
	437	+	}
	438	+	default:
	439	+	x.fail(err)
	440	+	}
	441	+	}
	442	+
	443	+	func (x *XWM) setWritable(on bool) {
	444	+	x.writable = on
	445	+	if x.src == nil {
	446	+	return
	447	+	}
	448	+	if err := x.src.SetWritable(on); err != nil {
	449	+	x.fail(err)
	450	+	}
	451	+	}

A internal/adapters/wayland/xwm/xwm_test.go +381 -0

@@ -0,0 +1,381 @@
	1	+	package xwm
	2	+
	3	+	import (
	4	+	"context"
	5	+	"encoding/binary"
	6	+	"os"
	7	+	"strings"
	8	+	"testing"
	9	+	"time"
	10	+
	11	+	"bnema.dev/xturbo/xproto"
	12	+	"github.com/bnema/neferwl/internal/ports"
	13	+	"github.com/bnema/zerowrap"
	14	+	"github.com/rs/zerolog"
	15	+	"github.com/stretchr/testify/mock"
	16	+	"github.com/stretchr/testify/require"
	17	+	)
	18	+
	19	+	func testLog() zerowrap.Logger { return zerowrap.Logger{Logger: zerolog.Nop()} }
	20	+
	21	+	func bootPeer(t testing.T, mutate func(p xpeer)) (XWM, xpeer) {
	22	+	t.Helper()
	23	+	fd, p := startXPeer(t, fullPeerExts())
	24	+	if mutate != nil {
	25	+	p.set(mutate)
	26	+	}
	27	+	x, err := Boot(context.Background(), fd, testLog())
	28	+	require.NoError(t, err)
	29	+	t.Cleanup(x.CloseConn)
	30	+	return x, p
	31	+	}
	32	+
	33	+	func atomsOf(p xpeerProp) []uint32 {
	34	+	out := make([]uint32, len(p.data)/4)
	35	+	for i := range out {
	36	+	out[i] = binary.LittleEndian.Uint32(p.data[4*i:])
	37	+	}
	38	+	return out
	39	+	}
	40	+
	41	+	func TestBootRequests(t *testing.T) {
	42	+	x, p := bootPeer(t, nil)
	43	+	reqs := p.requests()
	44	+
	45	+	first := -1
	46	+	for i, r := range reqs {
	47	+	if r.major == opInternAtom {
	48	+	first = i
	49	+	break
	50	+	}
	51	+	}
	52	+	require.NotEqual(t, -1, first)
	53	+	for i := 0; i < atomCount; i++ {
	54	+	r := reqs[first+i]
	55	+	require.EqualValues(t, opInternAtom, r.major, i)
	56	+	n := int(binary.LittleEndian.Uint16(r.raw[4:]))
	57	+	require.Equal(t, atomNames[i], string(r.raw[8:8+n]), i)
	58	+	require.Equal(t, p.atom(atomNames[i]), x.atoms[i])
	59	+	}
	60	+
	61	+	// Root mask, then composite redirect, then the WM window and ownership.
	62	+	var rootMask, redirect, create, s0, cm, focus int
	63	+	rootMask, redirect, create, s0, cm, focus = -1, -1, -1, -1, -1, -1
	64	+	wm := x.wmWin
	65	+	for i := first + atomCount; i < len(reqs); i++ {
	66	+	r := reqs[i]
	67	+	switch {
	68	+	case r.major == opChangeWindowAttributes && r.u32(4) == peerRoot:
	69	+	rootMask = i
	70	+	require.EqualValues(t, 1<<11, r.u32(8))
	71	+	want := uint32(xproto.EventMaskSubstructureRedirect \| xproto.EventMaskSubstructureNotify \| xproto.EventMaskPropertyChange)
	72	+	require.Equal(t, want, r.u32(12))
	73	+	case r.major == 142 && r.minor == 2:
	74	+	redirect = i
	75	+	require.EqualValues(t, peerRoot, r.u32(4))
	76	+	require.EqualValues(t, 1, r.raw[8], "manual")
	77	+	case r.major == opCreateWindow:
	78	+	create = i
	79	+	require.Equal(t, wm, r.u32(4))
	80	+	case r.major == opSetSelectionOwner && r.u32(8) == p.atom("WM_S0"):
	81	+	s0 = i
	82	+	require.Equal(t, wm, r.u32(4))
	83	+	case r.major == opSetSelectionOwner && r.u32(8) == p.atom("_NET_WM_CM_S0"):
	84	+	cm = i
	85	+	case r.major == opSetInputFocus:
	86	+	focus = i
	87	+	require.EqualValues(t, 0, r.u32(4), "focus None")
	88	+	}
	89	+	}
	90	+	for name, i := range map[string]int{"rootMask": rootMask, "redirect": redirect, "create": create, "WM_S0": s0, "CM_S0": cm, "focus": focus} {
	91	+	require.NotEqual(t, -1, i, name)
	92	+	}
	93	+	require.Less(t, rootMask, redirect)
	94	+	require.Less(t, redirect, create)
	95	+	require.Less(t, create, s0)
	96	+
	97	+	sup, ok := p.prop(peerRoot, "_NET_SUPPORTED")
	98	+	require.True(t, ok)
	99	+	var names []string
	100	+	byAtom := map[uint32]string{}
	101	+	for n, a := range p.atoms {
	102	+	byAtom[a] = n
	103	+	}
	104	+	for _, a := range atomsOf(sup) {
	105	+	names = append(names, byAtom[a])
	106	+	}
	107	+	require.Equal(t, []string{
	108	+	"_NET_WM_STATE", "_NET_ACTIVE_WINDOW", "_NET_WM_STATE_FOCUSED",
	109	+	"_NET_WM_STATE_MODAL", "_NET_WM_STATE_FULLSCREEN", "_NET_CLIENT_LIST",
	110	+	"_NET_CLIENT_LIST_STACKING", "_NET_SUPPORTING_WM_CHECK", "_NET_WM_NAME", "_NET_WM_PID",
	111	+	"_NET_WM_WINDOW_TYPE",
	112	+	}, names)
	113	+	require.NotContains(t, names, "_NET_WM_MOVERESIZE")
	114	+	require.NotContains(t, names, "_NET_WM_STATE_MAXIMIZED_VERT")
	115	+
	116	+	check, ok := p.prop(peerRoot, "_NET_SUPPORTING_WM_CHECK")
	117	+	require.True(t, ok)
	118	+	require.Equal(t, []uint32{wm}, atomsOf(check))
	119	+	check, ok = p.prop(wm, "_NET_SUPPORTING_WM_CHECK")
	120	+	require.True(t, ok)
	121	+	require.Equal(t, []uint32{wm}, atomsOf(check))
	122	+	name, ok := p.prop(wm, "_NET_WM_NAME")
	123	+	require.True(t, ok)
	124	+	require.Equal(t, "neferwl", string(name.data))
	125	+	active, ok := p.prop(peerRoot, "_NET_ACTIVE_WINDOW")
	126	+	require.True(t, ok)
	127	+	require.Equal(t, []uint32{0}, atomsOf(active))
	128	+	for _, l := range []string{"_NET_CLIENT_LIST", "_NET_CLIENT_LIST_STACKING"} {
	129	+	v, ok := p.prop(peerRoot, l)
	130	+	require.True(t, ok, l)
	131	+	require.Empty(t, v.data, l)
	132	+	}
	133	+	}
	134	+
	135	+	func TestBootWMExists(t *testing.T) {
	136	+	fd, p := startXPeer(t, fullPeerExts())
	137	+	p.set(func(p *xpeer) { p.denyRoot = true })
	138	+	x, err := Boot(context.Background(), fd, testLog())
	139	+	require.ErrorIs(t, err, ErrWMExists)
	140	+	require.Nil(t, x)
	141	+	// Nothing the running window manager owns was touched.
	142	+	for _, r := range p.requests() {
	143	+	require.NotEqual(t, uint8(opSetSelectionOwner), r.major)
	144	+	if r.major == opChangeProperty {
	145	+	require.NotEqual(t, uint32(peerRoot), r.u32(4))
	146	+	}
	147	+	}
	148	+	}
	149	+
	150	+	func TestBootNoComposite(t *testing.T) {
	151	+	exts := fullPeerExts()
	152	+	delete(exts, "Composite")
	153	+	fd, _ := startXPeer(t, exts)
	154	+	_, err := Boot(context.Background(), fd, testLog())
	155	+	require.ErrorIs(t, err, ErrNoComposite)
	156	+	}
	157	+
	158	+	func TestBootOptionalExtensions(t *testing.T) {
	159	+	exts := fullPeerExts()
	160	+	delete(exts, "XFIXES")
	161	+	delete(exts, "X-Resource")
	162	+	fd, _ := startXPeer(t, exts)
	163	+	x, err := Boot(context.Background(), fd, testLog())
	164	+	require.NoError(t, err)
	165	+	x.CloseConn()
	166	+	}
	167	+
	168	+	func TestBootConnectFailure(t *testing.T) {
	169	+	fd, p := startXPeer(t, fullPeerExts())
	170	+	p.hangup()
	171	+	_, err := Boot(context.Background(), fd, testLog())
	172	+	require.Error(t, err)
	173	+	}
	174	+
	175	+	func TestBootExistingWindows(t *testing.T) {
	176	+	x, p := bootPeer(t, func(p *xpeer) {
	177	+	p.children = []uint32{0x400001, 0x400002}
	178	+	p.attrs[0x400002] = [2]byte{1, 2} // override-redirect, viewable
	179	+	})
	180	+	_ = p
	181	+	require.NotZero(t, x.tab.lookup(0x400001))
	182	+	require.NotZero(t, x.tab.lookup(0x400002))
	183	+	require.Equal(t, kindManaged, x.tab.rec(x.tab.lookup(0x400001)).kind)
	184	+	require.Equal(t, kindUnmanaged, x.tab.rec(x.tab.lookup(0x400002)).kind)
	185	+	}
	186	+
	187	+	// readUntil dispatches the socket until cond holds.
	188	+	func readUntil(t testing.T, x XWM, cond func() bool) {
	189	+	t.Helper()
	190	+	deadline := time.Now().Add(5 * time.Second)
	191	+	for !cond() {
	192	+	if time.Now().After(deadline) {
	193	+	t.Fatal("condition never held")
	194	+	}
	195	+	x.onReadable()
	196	+	time.Sleep(time.Millisecond)
	197	+	}
	198	+	}
	199	+
	200	+	func newPost() (post func(func()), runs *[]func()) {
	201	+	var q []func()
	202	+	return func(f func()) { q = append(q, f) }, &q
	203	+	}
	204	+
	205	+	func TestAttachAnnouncesWindowsFoundAtBoot(t *testing.T) {
	206	+	x, _ := bootPeer(t, func(p *xpeer) {
	207	+	p.children = []uint32{0x400001, 0x400002}
	208	+	p.attrs[0x400002] = [2]byte{1, 2}
	209	+	})
	210	+	h := newMockhost(t)
	211	+	src := newMockfdSource(t)
	212	+	h.EXPECT().Created(x.tab.lookup(0x400001), uint32(0x400001)).Return(ports.WindowID(7)).Once()
	213	+	post, _ := newPost()
	214	+	x.attach(src, h, post)
	215	+	require.Equal(t, ports.WindowID(7), x.tab.rec(x.tab.lookup(0x400001)).id)
	216	+	}
	217	+
	218	+	func attached(t testing.T) (XWM, xpeer, mockhost, mockfdSource, []func()) {
	219	+	t.Helper()
	220	+	x, p := bootPeer(t, nil)
	221	+	h := newMockhost(t)
	222	+	src := newMockfdSource(t)
	223	+	post, runs := newPost()
	224	+	x.attach(src, h, post)
	225	+	return x, p, h, src, runs
	226	+	}
	227	+
	228	+	func TestCreateAndDestroyManaged(t *testing.T) {
	229	+	x, p, h, src, _ := attached(t)
	230	+	const win = 0x500001
	231	+	h.EXPECT().Created(mock.Anything, uint32(win)).Return(ports.WindowID(3)).Once()
	232	+	p.createNotify(win, false)
	233	+	readUntil(t, x, func() bool { return x.tab.lookup(win) != 0 })
	234	+	s := x.tab.lookup(win)
	235	+	require.Equal(t, kindManaged, x.tab.rec(s).kind)
	236	+	require.Equal(t, ports.WindowID(3), x.tab.rec(s).id)
	237	+
	238	+	// The window is watched for property and focus changes.
	239	+	req, _ := p.waitReq(0, func(r xpeerReq) bool { return r.major == opChangeWindowAttributes && r.u32(4) == win })
	240	+	require.EqualValues(t, xproto.EventMaskPropertyChange\|xproto.EventMaskFocusChange, req.u32(12))
	241	+
	242	+	h.EXPECT().Dissociate(s, true).Once()
	243	+	p.destroyNotify(win)
	244	+	readUntil(t, x, func() bool { return x.tab.lookup(win) == 0 })
	245	+	require.Zero(t, x.tab.n)
	246	+	_ = src
	247	+	}
	248	+
	249	+	// The X server reports the XWM's own check window to it like any other
	250	+	// child of the root; it is never adopted.
	251	+	func TestOwnWindowNeverAdopted(t *testing.T) {
	252	+	x, p, _, _, _ := attached(t) // the mock fails the test on any host call
	253	+	p.createNotify(x.wmWin, false)
	254	+	const marker = 0x500003
	255	+	p.createNotify(marker, true)
	256	+	readUntil(t, x, func() bool { return x.tab.lookup(marker) != 0 })
	257	+	require.Zero(t, x.tab.lookup(x.wmWin))
	258	+	}
	259	+
	260	+	func TestOverrideRedirectNeverReachesHost(t *testing.T) {
	261	+	x, p, _, _, _ := attached(t) // the mock fails the test on any host call
	262	+	p.createNotify(0x500002, true)
	263	+	readUntil(t, x, func() bool { return x.tab.lookup(0x500002) != 0 })
	264	+	require.Equal(t, kindUnmanaged, x.tab.rec(x.tab.lookup(0x500002)).kind)
	265	+	require.EqualValues(t, 1, x.Stats().UnmanagedSeen)
	266	+	p.destroyNotify(0x500002)
	267	+	readUntil(t, x, func() bool { return x.tab.lookup(0x500002) == 0 })
	268	+	}
	269	+
	270	+	func TestCloseDissociatesEverything(t *testing.T) {
	271	+	x, p, h, src, _ := attached(t)
	272	+	for _, win := range []uint32{0x500001, 0x500002} {
	273	+	h.EXPECT().Created(mock.Anything, win).Return(ports.WindowID(win)).Once()
	274	+	p.createNotify(win, false)
	275	+	}
	276	+	p.createNotify(0x500003, true)
	277	+	readUntil(t, x, func() bool { return x.tab.lookup(0x500003) != 0 })
	278	+	h.EXPECT().Dissociate(x.tab.lookup(0x500001), true).Once()
	279	+	h.EXPECT().Dissociate(x.tab.lookup(0x500002), true).Once()
	280	+	src.EXPECT().Remove().Once()
	281	+	x.Close()
	282	+	x.Close() // idempotent
	283	+	require.True(t, x.closed)
	284	+	require.Equal(t, -1, x.conn.Fd())
	285	+	}
	286	+
	287	+	func TestEOFClosesXWM(t *testing.T) {
	288	+	x, p, h, src, _ := attached(t)
	289	+	h.EXPECT().Created(mock.Anything, uint32(0x500001)).Return(ports.WindowID(1)).Once()
	290	+	p.createNotify(0x500001, false)
	291	+	readUntil(t, x, func() bool { return x.tab.lookup(0x500001) != 0 })
	292	+	h.EXPECT().Dissociate(x.tab.lookup(0x500001), true).Once()
	293	+	src.EXPECT().Remove().Once()
	294	+	p.hangup()
	295	+	readUntil(t, x, func() bool { return x.closed })
	296	+	}
	297	+
	298	+	func TestWakeCoalescesFlush(t *testing.T) {
	299	+	x, _, _, _, runs := attached(t)
	300	+	x.wake()
	301	+	x.wake()
	302	+	x.wake()
	303	+	require.Len(t, *runs, 1)
	304	+	(*runs)[0]()
	305	+	x.wake()
	306	+	require.Len(t, *runs, 2)
	307	+	}
	308	+
	309	+	func TestWriteBackpressure(t *testing.T) {
	310	+	x, p, _, src, _ := attached(t)
	311	+	p.pause()
	312	+	b := x.conn.Buf()
	313	+	big := make([]byte, 64<<10)
	314	+	for i := 0; i < 64; i++ { // 4 MiB: more than any socket buffer
	315	+	xproto.ChangeProperty(b, xproto.PropModeReplace, xproto.Window(x.root), xproto.AtomWmName, xproto.AtomString, 8, uint32(len(big)), big)
	316	+	}
	317	+	src.EXPECT().SetWritable(true).Return(nil).Once()
	318	+	x.flush()
	319	+	require.True(t, x.writable)
	320	+	x.flush() // still blocked: SetWritable is not called again
	321	+	x.onWritable()
	322	+	require.True(t, x.writable)
	323	+
	324	+	drained := false
	325	+	src.EXPECT().SetWritable(false).RunAndReturn(func(bool) error { drained = true; return nil }).Once()
	326	+	p.resume()
	327	+	deadline := time.Now().Add(10 * time.Second)
	328	+	for !drained {
	329	+	require.True(t, time.Now().Before(deadline), "never drained")
	330	+	x.onWritable()
	331	+	time.Sleep(time.Millisecond)
	332	+	}
	333	+	require.False(t, x.writable)
	334	+	}
	335	+
	336	+	func TestFlushWithNothingQueuedSendsNothing(t *testing.T) {
	337	+	x, p, _, _, _ := attached(t)
	338	+	n := len(p.requests())
	339	+	x.flush()
	340	+	time.Sleep(20 * time.Millisecond)
	341	+	require.Len(t, p.requests(), n, "nothing queued, nothing sent")
	342	+	}
	343	+
	344	+	// The XWM never blocks after Boot: NewXID, Sync and InternAtoms are startup
	345	+	// only, so they may appear in production code only inside boot().
	346	+	func TestNoBlockingCallsOutsideBoot(t *testing.T) {
	347	+	files, err := os.ReadDir(".")
	348	+	require.NoError(t, err)
	349	+	for _, f := range files {
	350	+	name := f.Name()
	351	+	if !strings.HasSuffix(name, ".go") \|\| strings.HasSuffix(name, "_test.go") {
	352	+	continue
	353	+	}
	354	+	src, err := os.ReadFile(name)
	355	+	require.NoError(t, err)
	356	+	text := string(src)
	357	+	lo, hi := 0, 0
	358	+	if name == "xwm.go" {
	359	+	lo = strings.Index(text, "func (x *XWM) boot() error")
	360	+	hi = strings.Index(text, "// Attach registers")
	361	+	require.Greater(t, hi, lo)
	362	+	}
	363	+	for _, call := range []string{".NewXID(", ".Sync(", ".InternAtoms("} {
	364	+	for _, at := range allIndex(text, call) {
	365	+	require.True(t, name == "xwm.go" && at > lo && at < hi, "%s: %s outside boot", name, call)
	366	+	}
	367	+	}
	368	+	}
	369	+	}
	370	+
	371	+	func allIndex(s, sub string) []int {
	372	+	var out []int
	373	+	for off := 0; ; {
	374	+	i := strings.Index(s[off:], sub)
	375	+	if i < 0 {
	376	+	return out
	377	+	}
	378	+	out = append(out, off+i)
	379	+	off += i + len(sub)
	380	+	}
	381	+	}

A internal/adapters/xwayland/builtin.go +216 -0

@@ -0,0 +1,216 @@
	1	+	package xwayland
	2	+
	3	+	import (
	4	+	"context"
	5	+	"errors"
	6	+	"fmt"
	7	+	"os"
	8	+	"os/exec"
	9	+	"strconv"
	10	+	"strings"
	11	+	"syscall"
	12	+	"time"
	13	+
	14	+	"golang.org/x/sys/unix"
	15	+	)
	16	+
	17	+	type builtinStarter struct{}
	18	+
	19	+	func (builtinStarter) start(ctx context.Context, d Display, stderr logWriter) error {
	20	+	// Files own all setup descriptors until Start succeeds and Attach takes
	21	+	// the Wayland socket. This also unwinds partial setup failures.
	22	+	var files []*os.File
	23	+	defer func() {
	24	+	for _, f := range files {
	25	+	if f != nil {
	26	+	f.Close()
	27	+	}
	28	+	}
	29	+	}()
	30	+	pair := func(name string) (int, error) {
	31	+	fds, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM\|unix.SOCK_CLOEXEC, 0)
	32	+	if err != nil {
	33	+	return 0, err
	34	+	}
	35	+	i := len(files)
	36	+	files = append(files, os.NewFile(uintptr(fds[0]), name+" parent"), os.NewFile(uintptr(fds[1]), name+" child"))
	37	+	return i, nil
	38	+	}
	39	+	wl, err := pair("wayland")
	40	+	if err != nil {
	41	+	return err
	42	+	}
	43	+	wm, err := pair("wm")
	44	+	if err != nil {
	45	+	return err
	46	+	}
	47	+	var pipe [2]int
	48	+	if err := unix.Pipe2(pipe[:], unix.O_CLOEXEC); err != nil {
	49	+	return err
	50	+	}
	51	+	rd := os.NewFile(uintptr(pipe[0]), "displayfd read")
	52	+	wr := os.NewFile(uintptr(pipe[1]), "displayfd write")
	53	+	files = append(files, rd, wr)
	54	+	args := []string{d.Name(), "-rootless"}
	55	+	for i := range d.sockets {
	56	+	args = append(args, "-listenfd", strconv.Itoa(3+i))
	57	+	}
	58	+	wlChild := 3 + len(d.sockets)
	59	+	args = append(args, "-wm", strconv.Itoa(wlChild+1), "-displayfd", strconv.Itoa(wlChild+2))
	60	+	cmd := exec.Command(d.opts.Binary, args...)
	61	+	for _, e := range d.opts.Env {
	62	+	if !strings.HasPrefix(e, "WAYLAND_DISPLAY=") && !strings.HasPrefix(e, "WAYLAND_SOCKET=") {
	63	+	cmd.Env = append(cmd.Env, e)
	64	+	}
	65	+	}
	66	+	cmd.Env = append(cmd.Env, "WAYLAND_SOCKET="+strconv.Itoa(wlChild))
	67	+	cmd.ExtraFiles = append(append([]*os.File(nil), d.sockets...), files[wl+1], files[wm+1], wr)
	68	+	cmd.Stderr = stderr
	69	+	cmd.WaitDelay = 2 * time.Second
	70	+	cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
	71	+	if err := cmd.Start(); err != nil {
	72	+	return err
	73	+	}
	74	+	files[wl+1].Close()
	75	+	files[wm+1].Close()
	76	+	wr.Close()
	77	+	d.opts.Log.Info().Str("display", d.Name()).Int("pid", cmd.Process.Pid).Msg("Xwayland started")
	78	+	// Detach the Wayland descriptor from os.File ownership before handing it
	79	+	// to the display (including its finalizers).
	80	+	if d.opts.Attach != nil {
	81	+	// Dup transfers an independent descriptor; closing the File wrapper below
	82	+	// cannot race with the display's ownership of the transferred descriptor.
	83	+	var wlFD int
	84	+	wlFD, err = unix.FcntlInt(uintptr(files[wl].Fd()), unix.F_DUPFD_CLOEXEC, 0)
	85	+	if err == nil {
	86	+	d.opts.Attach(wlFD)
	87	+	}
	88	+	}
	89	+	files[wl].Close()
	90	+	done := make(chan error, 1)
	91	+	procGone := make(chan struct{})
	92	+	go func() { done <- cmd.Wait(); close(procGone) }()
	93	+	if err != nil {
	94	+	stopGroup(cmd, done)
	95	+	return err
	96	+	}
	97	+	exited, readyErr := waitReady(ctx, pipe[0], done)
	98	+	if readyErr != nil {
	99	+	err := readyErr
	100	+	if errors.Is(err, errReadinessTimeout) {
	101	+	d.opts.Log.Warn().Str("display", d.Name()).Msg("Xwayland readiness timed out")
	102	+	}
	103	+	// Join Wait unless readiness already observed process exit.
	104	+	if !exited {
	105	+	stopGroup(cmd, done)
	106	+	}
	107	+	return err
	108	+	}
	109	+	rd.Close()
	110	+	d.opts.Log.Info().Str("display", d.Name()).Msg("Xwayland ready")
	111	+	if d.opts.AttachWM != nil {
	112	+	// The WM socket is bootstrapped only now: Xwayland serves it after its
	113	+	// Wayland round trips, which the display goroutine must be free to answer.
	114	+	wmFD, err := unix.FcntlInt(uintptr(files[wm].Fd()), unix.F_DUPFD_CLOEXEC, 0)
	115	+	if err != nil {
	116	+	stopGroup(cmd, done)
	117	+	return err
	118	+	}
	119	+	// The context ends with the process or the caller's context, so a
	120	+	// bootstrap against a dead or silent Xwayland aborts at once.
	121	+	wmCtx, cancel := context.WithCancel(ctx)
	122	+	watched := make(chan struct{})
	123	+	go func() {
	124	+	defer close(watched)
	125	+	select {
	126	+	case <-procGone:
	127	+	cancel()
	128	+	case <-wmCtx.Done():
	129	+	}
	130	+	}()
	131	+	stop := d.opts.AttachWM(wmCtx, wmFD)
	132	+	cancel()
	133	+	<-watched
	134	+	if stop != nil {
	135	+	// Runs before start returns so the restart loop never overlaps two XWMs.
	136	+	defer stop()
	137	+	}
	138	+	}
	139	+	select {
	140	+	case err := <-done:
	141	+	return err
	142	+	case <-ctx.Done():
	143	+	stopGroup(cmd, done)
	144	+	return ctx.Err()
	145	+	}
	146	+	}
	147	+
	148	+	var errReadinessTimeout = errors.New("xwayland readiness timed out")
	149	+
	150	+	// waitReady uses bounded poll waits rather than a pipe reader goroutine.
	151	+	// The result reports whether cmd.Wait was already joined.
	152	+	func waitReady(ctx context.Context, fd int, done <-chan error) (bool, error) {
	153	+	deadline := time.Now().Add(10 * time.Second)
	154	+	var buf [32]byte
	155	+	n := 0
	156	+	for {
	157	+	select {
	158	+	case err := <-done:
	159	+	if err == nil {
	160	+	err = errors.New("xwayland exited before readiness")
	161	+	}
	162	+	return true, err
	163	+	default:
	164	+	}
	165	+	if ctx.Err() != nil {
	166	+	return false, ctx.Err()
	167	+	}
	168	+	if time.Now().After(deadline) {
	169	+	return false, errReadinessTimeout
	170	+	}
	171	+	// A closed pipe also covers process exit, including exec's stderr delay.
	172	+	p := []unix.PollFd{{Fd: int32(fd), Events: unix.POLLIN}}
	173	+	_, err := unix.Poll(p, 50)
	174	+	if errors.Is(err, unix.EINTR) {
	175	+	continue
	176	+	}
	177	+	if err != nil {
	178	+	return false, err
	179	+	}
	180	+	if p[0].Revents == 0 {
	181	+	continue
	182	+	}
	183	+	if p[0].Revents&unix.POLLIN != 0 {
	184	+	count, err := unix.Read(fd, buf[n:])
	185	+	if errors.Is(err, unix.EINTR) {
	186	+	continue
	187	+	}
	188	+	if err != nil {
	189	+	return false, err
	190	+	}
	191	+	n += count
	192	+	if n > 0 && buf[n-1] == '\n' {
	193	+	if _, err := strconv.Atoi(strings.TrimSpace(string(buf[:n]))); err != nil {
	194	+	return false, fmt.Errorf("xwayland displayfd: %w", err)
	195	+	}
	196	+	return false, nil
	197	+	}
	198	+	if n == len(buf) {
	199	+	return false, errors.New("invalid Xwayland displayfd response")
	200	+	}
	201	+	}
	202	+	if p[0].Revents&(unix.POLLHUP\|unix.POLLERR\|unix.POLLNVAL) != 0 {
	203	+	return false, errors.New("xwayland exited before readiness")
	204	+	}
	205	+	}
	206	+	}
	207	+
	208	+	func stopGroup(cmd *exec.Cmd, done <-chan error) {
	209	+	_ = unix.Kill(-cmd.Process.Pid, unix.SIGTERM)
	210	+	select {
	211	+	case <-done:
	212	+	case <-time.After(2 * time.Second):
	213	+	_ = unix.Kill(-cmd.Process.Pid, unix.SIGKILL)
	214	+	<-done
	215	+	}
	216	+	}

A internal/adapters/xwayland/starter_mock_test.go +110 -0

@@ -0,0 +1,110 @@
	1	+	// Code generated by mockery; DO NOT EDIT.
	2	+	// github.com/vektra/mockery
	3	+	// template: testify
	4	+
	5	+	package xwayland
	6	+
	7	+	import (
	8	+	"context"
	9	+
	10	+	mock "github.com/stretchr/testify/mock"
	11	+	)
	12	+
	13	+	// newMockstarter creates a new instance of mockstarter. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
	14	+	// The first argument is typically a *testing.T value.
	15	+	func newMockstarter(t interface {
	16	+	mock.TestingT
	17	+	Cleanup(func())
	18	+	}) *mockstarter {
	19	+	if helper, ok := t.(interface{ Helper() }); ok {
	20	+	helper.Helper()
	21	+	}
	22	+
	23	+	mock := &mockstarter{}
	24	+	mock.Mock.Test(t)
	25	+
	26	+	t.Cleanup(func() {
	27	+	if helper, ok := t.(interface{ Helper() }); ok {
	28	+	helper.Helper()
	29	+	}
	30	+	mock.AssertExpectations(t)
	31	+	})
	32	+
	33	+	return mock
	34	+	}
	35	+
	36	+	// mockstarter is an autogenerated mock type for the starter type
	37	+	type mockstarter struct {
	38	+	mock.Mock
	39	+	}
	40	+
	41	+	type mockstarter_Expecter struct {
	42	+	mock *mock.Mock
	43	+	}
	44	+
	45	+	func (_m mockstarter) EXPECT() mockstarter_Expecter {
	46	+	return &mockstarter_Expecter{mock: &_m.Mock}
	47	+	}
	48	+
	49	+	// start provides a mock function for the type mockstarter
	50	+	func (_mock mockstarter) start(ctx context.Context, d Display, stderr *logWriter) error {
	51	+	ret := _mock.Called(ctx, d, stderr)
	52	+
	53	+	if len(ret) == 0 {
	54	+	panic("no return value specified for start")
	55	+	}
	56	+
	57	+	var r0 error
	58	+	if returnFunc, ok := ret.Get(0).(func(context.Context, Display, logWriter) error); ok {
	59	+	r0 = returnFunc(ctx, d, stderr)
	60	+	} else {
	61	+	r0 = ret.Error(0)
	62	+	}
	63	+	return r0
	64	+	}
	65	+
	66	+	// mockstarter_start_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'start'
	67	+	type mockstarter_start_Call struct {
	68	+	*mock.Call
	69	+	}
	70	+
	71	+	// start is a helper method to define mock.On call
	72	+	// - ctx context.Context
	73	+	// - d *Display
	74	+	// - stderr *logWriter
	75	+	func (_e mockstarter_Expecter) start(ctx any, d any, stderr any) mockstarter_start_Call {
	76	+	return &mockstarter_start_Call{Call: _e.mock.On("start", ctx, d, stderr)}
	77	+	}
	78	+
	79	+	func (_c mockstarter_start_Call) Run(run func(ctx context.Context, d Display, stderr logWriter)) mockstarter_start_Call {
	80	+	_c.Call.Run(func(args mock.Arguments) {
	81	+	var arg0 context.Context
	82	+	if args[0] != nil {
	83	+	arg0 = args[0].(context.Context)
	84	+	}
	85	+	var arg1 *Display
	86	+	if args[1] != nil {
	87	+	arg1 = args[1].(*Display)
	88	+	}
	89	+	var arg2 *logWriter
	90	+	if args[2] != nil {
	91	+	arg2 = args[2].(*logWriter)
	92	+	}
	93	+	run(
	94	+	arg0,
	95	+	arg1,
	96	+	arg2,
	97	+	)
	98	+	})
	99	+	return _c
	100	+	}
	101	+
	102	+	func (_c mockstarter_start_Call) Return(err error) mockstarter_start_Call {
	103	+	_c.Call.Return(err)
	104	+	return _c
	105	+	}
	106	+
	107	+	func (_c mockstarter_start_Call) RunAndReturn(run func(ctx context.Context, d Display, stderr logWriter) error) mockstarter_start_Call {
	108	+	_c.Call.Return(run)
	109	+	return _c
	110	+	}

M internal/adapters/xwayland/xwayland.go +46 -18

@@ -1,6 +1,5 @@
1		-	// Package xwayland runs X11 clients through xwayland-satellite, started on
2		-	// demand: neferwl owns the X11 display sockets and starts the satellite
3		-	// when the first X11 client connects, and again after it exits.
	1	+	// Package xwayland starts an X11 backend on demand. NeferWL owns the display
	2	+	// sockets and starts the selected backend when the first client connects.
4	3		package xwayland
5	4
6	5		import (

@@ -17,15 +16,26 @@ import (
17	16		"syscall"
18	17		"time"
19	18
	19	+	"github.com/bnema/neferwl/internal/ports"
20	20		"github.com/bnema/zerowrap"
21	21		"golang.org/x/sys/unix"
22	22		)
23	23
24	24		// Options configures the X11 display.
25	25		type Options struct {
26		-	// Binary is the xwayland-satellite executable.
	26	+	Backend ports.XwaylandBackend
	27	+	// Attach takes ownership of the Wayland descriptor right after the backend
	28	+	// starts.
	29	+	Attach func(wlFD int)
	30	+	// AttachWM takes ownership of the window manager descriptor once the
	31	+	// backend is ready. It may block to bootstrap the X11 connection; ctx ends
	32	+	// when the backend exits or the run is cancelled, and the bootstrap must
	33	+	// then give up. The returned stop (nil for none) is called before the run
	34	+	// ends, on backend exit or context cancellation.
	35	+	AttachWM func(ctx context.Context, wmFD int) (stop func())
	36	+	// Binary is the selected backend executable.
27	37		Binary string
28		-	// Env is the satellite's environment; it must hold WAYLAND_DISPLAY.
	38	+	// Env is the backend environment; satellite requires WAYLAND_DISPLAY.
29	39		Env []string
30	40		// Dir holds the X11 sockets and TmpDir the lock files: /tmp/.X11-unix
31	41		// and /tmp outside tests.

@@ -35,8 +45,9 @@ type Options struct {
35	45		Log zerowrap.Logger
36	46		}
37	47
38		-	// Display is an X11 display served by xwayland-satellite.
	48	+	// Display is an on-demand X11 display.
39	49		type Display struct {
	50	+	starter starter
40	51		opts Options
41	52		n int
42	53		sockets []*os.File // unix socket, then the abstract one

@@ -81,7 +92,10 @@ func Open(opts Options) (*Display, error) {
81	92		_ = os.Remove(lock)
82	93		return nil, fmt.Errorf("write X11 lock: %w", err)
83	94		}
84		-	d := &Display{opts: opts, n: n, lock: lock, socket: filepath.Join(opts.Dir, fmt.Sprintf("X%d", n))}
	95	+	d := &Display{starter: satelliteStarter{}, opts: opts, n: n, lock: lock, socket: filepath.Join(opts.Dir, fmt.Sprintf("X%d", n))}
	96	+	if opts.Backend == ports.XwaylandBuiltin {
	97	+	d.starter = builtinStarter{}
	98	+	}
85	99		if err := d.listen(); err != nil {
86	100		last = err
87	101		d.Close()

@@ -212,15 +226,15 @@ func (d *Display) Run(ctx context.Context) error {
212	226		return err
213	227		}
214	228		start := time.Now()
215		-	stderr := &logWriter{log: d.opts.Log}
216		-	err := d.serve(ctx, stderr)
	229	+	stderr := &logWriter{log: d.opts.Log, backend: d.backendName()}
	230	+	err := d.starter.start(ctx, d, stderr)
217	231		if ctx.Err() != nil {
218	232		return nil
219	233		}
220	234		if err != nil {
221		-	d.opts.Log.Warn().Err(err).Strs("stderr", stderr.tail()).Str("display", d.Name()).Msg("xwayland-satellite exited")
	235	+	d.opts.Log.Warn().Err(err).Strs("stderr", stderr.tail()).Str("display", d.Name()).Msg(d.backendName() + " exited")
222	236		} else {
223		-	d.opts.Log.Info().Str("display", d.Name()).Msg("xwayland-satellite exited")
	237	+	d.opts.Log.Info().Str("display", d.Name()).Msg(d.backendName() + " exited")
224	238		}
225	239		// Clients the satellite never accepted would wake us at once: a
226	240		// satellite that cannot start must not respawn in a loop.

@@ -261,8 +275,14 @@ func (d *Display) waitClient(ctx context.Context, wake int) error {
261	275		return ctx.Err()
262	276		}
263	277
264		-	// serve runs the satellite on the sockets until it exits or ctx ends.
265		-	func (d Display) serve(ctx context.Context, stderr logWriter) error {
	278	+	// starter runs a backend on the reserved sockets until it exits or ctx ends.
	279	+	type starter interface {
	280	+	start(ctx context.Context, d Display, stderr logWriter) error
	281	+	}
	282	+
	283	+	type satelliteStarter struct{}
	284	+
	285	+	func (satelliteStarter) start(ctx context.Context, d Display, stderr logWriter) error {
266	286		args := []string{d.Name()}
267	287		for i := range d.sockets {
268	288		args = append(args, "-listenfd", strconv.Itoa(3+i))

@@ -318,10 +338,11 @@ func (d *Display) dropPending() {
318	338		// logWriter logs the satellite's stderr line by line and keeps the last
319	339		// lines for the exit log; exec copies it from a pipe on its own goroutine.
320	340		type logWriter struct {
321		-	mu sync.Mutex
322		-	log zerowrap.Logger
323		-	line []byte
324		-	last []string
	341	+	backend string
	342	+	mu sync.Mutex
	343	+	log zerowrap.Logger
	344	+	line []byte
	345	+	last []string
325	346		}
326	347
327	348		// tail is the last lines written.

@@ -342,7 +363,7 @@ func (w *logWriter) Write(p []byte) (int, error) {
342	363		}
343	364		if i > 0 {
344	365		line := string(w.line[:i])
345		-	w.log.Debug().Str("line", line).Msg("xwayland-satellite")
	366	+	w.log.Debug().Str("line", line).Msg(w.backend)
346	367		if w.last = append(w.last, line); len(w.last) > 5 {
347	368		w.last = w.last[1:]
348	369		}

@@ -354,3 +375,10 @@ func (w *logWriter) Write(p []byte) (int, error) {
354	375		}
355	376		return len(p), nil
356	377		}
	378	+
	379	+	func (d *Display) backendName() string {
	380	+	if d.opts.Backend == ports.XwaylandBuiltin {
	381	+	return "Xwayland"
	382	+	}
	383	+	return "xwayland-satellite"
	384	+	}

M internal/adapters/xwayland/xwayland_test.go +207 -0


@@ -11,6 +11,8 @@ import (
11	11		"time"
12	12
13	13		"github.com/bnema/neferwl/internal/adapters/logging"
	14	+	"github.com/bnema/neferwl/internal/ports"
	15	+	"github.com/stretchr/testify/mock"
14	16		"golang.org/x/sys/unix"
15	17		)
16	18

@@ -270,3 +272,208 @@ func TestRunKillsSatelliteGroup(t *testing.T) {
270	272		}
271	273		}
272	274		}
	275	+
	276	+	func TestStarterSelection(t *testing.T) {
	277	+	for _, backend := range []ports.XwaylandBackend{ports.XwaylandSatellite, ports.XwaylandBuiltin} {
	278	+	opts := testOptions(t, "true")
	279	+	opts.Backend = backend
	280	+	d, err := Open(opts)
	281	+	if err != nil {
	282	+	t.Fatal(err)
	283	+	}
	284	+	defer d.Close()
	285	+	switch d.starter.(type) {
	286	+	case satelliteStarter:
	287	+	if backend != ports.XwaylandSatellite {
	288	+	t.Fatal("satellite selected")
	289	+	}
	290	+	case builtinStarter:
	291	+	if backend != ports.XwaylandBuiltin {
	292	+	t.Fatal("builtin selected")
	293	+	}
	294	+	default:
	295	+	t.Fatalf("unexpected starter %T", d.starter)
	296	+	}
	297	+	}
	298	+	}
	299	+
	300	+	func TestRunCallsStarter(t *testing.T) {
	301	+	d, err := Open(testOptions(t, "unused"))
	302	+	if err != nil {
	303	+	t.Fatal(err)
	304	+	}
	305	+	defer d.Close()
	306	+	ctx, cancel := context.WithCancel(t.Context())
	307	+	defer cancel()
	308	+	m := newMockstarter(t)
	309	+	d.starter = m
	310	+	m.EXPECT().start(ctx, d, mock.Anything).RunAndReturn(func(_ context.Context, got Display, stderr logWriter) error {
	311	+	if got != d \|\| stderr == nil {
	312	+	t.Error("starter arguments")
	313	+	}
	314	+	cancel()
	315	+	return ctx.Err()
	316	+	}).Once()
	317	+	done := make(chan error, 1)
	318	+	go func() { done <- d.Run(ctx) }()
	319	+	unix.Close(dial(t, d.socket))
	320	+	select {
	321	+	case err := <-done:
	322	+	if err != nil {
	323	+	t.Fatal(err)
	324	+	}
	325	+	case <-time.After(3 * time.Second):
	326	+	t.Fatal("Run did not stop")
	327	+	}
	328	+	}
	329	+
	330	+	func TestWaitReady(t *testing.T) {
	331	+	for _, tt := range []struct {
	332	+	name, data string
	333	+	wantErr bool
	334	+	}{
	335	+	{"ready", "12\n", false}, {"invalid", "bad\n", true}, {"closed", "", true},
	336	+	} {
	337	+	t.Run(tt.name, func(t *testing.T) {
	338	+	var p [2]int
	339	+	if err := unix.Pipe2(p[:], unix.O_CLOEXEC); err != nil {
	340	+	t.Fatal(err)
	341	+	}
	342	+	defer unix.Close(p[0])
	343	+	if tt.data != "" {
	344	+	if _, err := unix.Write(p[1], []byte(tt.data)); err != nil {
	345	+	t.Fatal(err)
	346	+	}
	347	+	}
	348	+	unix.Close(p[1])
	349	+	joined, err := waitReady(t.Context(), p[0], make(chan error))
	350	+	if joined \|\| (err != nil) != tt.wantErr {
	351	+	t.Fatalf("joined=%v err=%v", joined, err)
	352	+	}
	353	+	})
	354	+	}
	355	+	t.Run("exit", func(t *testing.T) {
	356	+	done := make(chan error, 1)
	357	+	done <- errors.New("exit")
	358	+	joined, err := waitReady(t.Context(), -1, done)
	359	+	if !joined \|\| err == nil {
	360	+	t.Fatal(joined, err)
	361	+	}
	362	+	})
	363	+	t.Run("cancel", func(t *testing.T) {
	364	+	ctx, cancel := context.WithCancel(t.Context())
	365	+	cancel()
	366	+	joined, err := waitReady(ctx, -1, make(chan error))
	367	+	if joined \|\| !errors.Is(err, context.Canceled) {
	368	+	t.Fatal(joined, err)
	369	+	}
	370	+	})
	371	+	}
	372	+
	373	+	// readyScript stands in for Xwayland: after a short delay it creates a marker
	374	+	// file and reports readiness on the -displayfd descriptor when ready is true,
	375	+	// then runs tail.
	376	+	func readyScript(t *testing.T, dir string, ready bool, tail string) (bin, marker string) {
	377	+	t.Helper()
	378	+	bin, marker = filepath.Join(dir, "xwayland"), filepath.Join(dir, "ready")
	379	+	script := "#!/bin/sh\nwhile [ $# -gt 0 ]; do [ \"$1\" = -displayfd ] && fd=$2; shift; done\n" +
	380	+	"sleep 0.3\n"
	381	+	if ready {
	382	+	script += ": > " + marker + "\neval \"echo 1 >&$fd\"\n"
	383	+	}
	384	+	script += tail + "\n"
	385	+	if err := os.WriteFile(bin, []byte(script), 0o755); err != nil {
	386	+	t.Fatal(err)
	387	+	}
	388	+	return bin, marker
	389	+	}
	390	+
	391	+	func runBuiltin(t *testing.T, ctx context.Context, ready bool, tail string, attachWM func(ctx context.Context, wmFD int)) (events []string) {
	392	+	t.Helper()
	393	+	opts := testOptions(t, "")
	394	+	opts.Backend = ports.XwaylandBuiltin
	395	+	var marker string
	396	+	opts.Binary, marker = readyScript(t, opts.TmpDir, ready, tail)
	397	+	exists := func() bool { _, err := os.Stat(marker); return err == nil }
	398	+	opts.Attach = func(wlFD int) {
	399	+	if exists() {
	400	+	t.Error("Attach ran after readiness")
	401	+	}
	402	+	events = append(events, "attach")
	403	+	unix.Close(wlFD)
	404	+	}
	405	+	opts.AttachWM = func(ctx context.Context, wmFD int) func() {
	406	+	if !exists() {
	407	+	t.Error("AttachWM ran before readiness")
	408	+	}
	409	+	events = append(events, "attachWM")
	410	+	attachWM(ctx, wmFD)
	411	+	return func() { events = append(events, "stop") }
	412	+	}
	413	+	d, err := Open(opts)
	414	+	if err != nil {
	415	+	t.Fatal(err)
	416	+	}
	417	+	defer d.Close()
	418	+	_ = d.starter.start(ctx, d, &logWriter{log: opts.Log, backend: d.backendName()})
	419	+	return append(events, "returned")
	420	+	}
	421	+
	422	+	// AttachWM runs only after -displayfd readiness; stop runs before start
	423	+	// returns, whether the process exits or the context ends.
	424	+	func TestBuiltinAttachWMAfterReadiness(t *testing.T) {
	425	+	for name, tc := range map[string]struct {
	426	+	tail string
	427	+	cancel bool
	428	+	}{"process exit": {tail: "exit 0"}, "context end": {tail: "exec sleep 30", cancel: true}} {
	429	+	t.Run(name, func(t *testing.T) {
	430	+	ctx, cancel := context.WithCancel(t.Context())
	431	+	defer cancel()
	432	+	events := runBuiltin(t, ctx, true, tc.tail, func(_ context.Context, wmFD int) {
	433	+	if _, err := unix.FcntlInt(uintptr(wmFD), unix.F_GETFD, 0); err != nil {
	434	+	t.Errorf("wmFD not open: %v", err)
	435	+	}
	436	+	unix.Close(wmFD)
	437	+	if tc.cancel {
	438	+	go func() { time.Sleep(200 * time.Millisecond); cancel() }()
	439	+	}
	440	+	})
	441	+	if got := strings.Join(events, ","); got != "attach,attachWM,stop,returned" {
	442	+	t.Fatalf("events %s", got)
	443	+	}
	444	+	})
	445	+	}
	446	+	}
	447	+
	448	+	// A process that exits before reporting readiness never reaches AttachWM.
	449	+	func TestBuiltinNoAttachWMWithoutReadiness(t *testing.T) {
	450	+	events := runBuiltin(t, t.Context(), false, "exit 1", func(context.Context, int) {})
	451	+	if got := strings.Join(events, ","); got != "attach,returned" {
	452	+	t.Fatalf("events %s", got)
	453	+	}
	454	+	}
	455	+
	456	+	// The AttachWM context ends when the process dies, so a bootstrap against a
	457	+	// dead Xwayland gives up at once instead of waiting out its handshake.
	458	+	func TestBuiltinAttachWMContextEndsWithProcess(t *testing.T) {
	459	+	ended := make(chan error, 1)
	460	+	start := time.Now()
	461	+	events := runBuiltin(t, t.Context(), true, "sleep 0.3", func(ctx context.Context, wmFD int) {
	462	+	defer unix.Close(wmFD)
	463	+	select {
	464	+	case <-ctx.Done():
	465	+	ended <- ctx.Err()
	466	+	case <-time.After(5 * time.Second):
	467	+	ended <- nil
	468	+	}
	469	+	})
	470	+	if err := <-ended; err == nil {
	471	+	t.Fatal("AttachWM context did not end with the process")
	472	+	}
	473	+	if time.Since(start) > 3*time.Second {
	474	+	t.Fatalf("took %v", time.Since(start))
	475	+	}
	476	+	if got := strings.Join(events, ","); got != "attach,attachWM,stop,returned" {
	477	+	t.Fatalf("events %s", got)
	478	+	}
	479	+	}

M internal/app/app.go +13 -6


@@ -5,6 +5,7 @@ import (
5	5		"context"
6	6		"fmt"
7	7		"io"
	8	+	"os/exec"
8	9		"time"
9	10
10	11		"github.com/bnema/neferwl/internal/adapters/logging"

@@ -188,18 +189,24 @@ func logScenes(log zerowrap.Logger, set []ports.Scene) {
188	189		}
189	190		}
190	191
191		-	// openXwayland reserves an X11 display for xwayland-satellite, or returns
	192	+	// openXwayland reserves an X11 display for the selected backend, or returns
192	193		// nil when X11 is off or unavailable: the session runs without it.
193		-	func openXwayland(ctx context.Context, opts Options, env []string, log zerowrap.Logger) *xwayland.Display {
194		-	bin := opts.Config.Xwayland
195		-	if bin == "" \|\| opts.NoXwayland {
	194	+	func openXwayland(ctx context.Context, opts Options, env []string, log zerowrap.Logger, attach func(int), attachWM func(context.Context, int) func()) *xwayland.Display {
	195	+	cfg := opts.Config.Xwayland
	196	+	bin := cfg.Binary
	197	+	if cfg.Backend == ports.XwaylandOff \|\| opts.NoXwayland {
196	198		return nil
197	199		}
198		-	if !xwayland.Supported(ctx, bin) {
	200	+	if cfg.Backend == ports.XwaylandBuiltin {
	201	+	if _, err := exec.LookPath(bin); err != nil {
	202	+	log.Warn().Err(err).Str("binary", bin).Msg("Xwayland not found: X11 apps disabled")
	203	+	return nil
	204	+	}
	205	+	} else if !xwayland.Supported(ctx, bin) {
199	206		log.Warn().Str("binary", bin).Msg("xwayland-satellite 0.7 or later not found: X11 apps disabled")
200	207		return nil
201	208		}
202		-	d, err := xwayland.Open(xwayland.Options{Binary: bin, Env: env, Dir: "/tmp/.X11-unix", TmpDir: "/tmp", Abstract: true, Log: log})
	209	+	d, err := xwayland.Open(xwayland.Options{Backend: cfg.Backend, Attach: attach, AttachWM: attachWM, Binary: bin, Env: env, Dir: "/tmp/.X11-unix", TmpDir: "/tmp", Abstract: true, Log: log})
203	210		if err != nil {
204	211		log.Warn().Err(err).Msg("X11 display disabled")
205	212		return nil

M internal/app/session.go +1 -1


@@ -152,7 +152,7 @@ func assembleSession(ctx context.Context, opts Options) (s *session, err error)
152	152		s.statePath = statePath
153	153		s.childEnv = append(s.childEnv, statefile.Env+"="+statePath)
154	154		}
155		-	if s.xdisplay = openXwayland(ctx, opts, s.childEnv, logging.For(ctx, "xwayland")); s.xdisplay != nil {
	155	+	if s.xdisplay = openXwayland(ctx, opts, s.childEnv, logging.For(ctx, "xwayland"), s.server.AttachXwayland, s.server.AttachXWM); s.xdisplay != nil {
156	156		s.childEnv = append(s.childEnv, "DISPLAY="+s.xdisplay.Name())
157	157		}
158	158		s.child = launcher.New(s.childEnv, s.security, logging.For(ctx, "launcher"))

A internal/app/testdata/x11probe/main.go +232 -0

@@ -0,0 +1,232 @@
	1	+	// Command x11probe is a minimal X11 client for the Xwayland end-to-end test.
	2	+	//
	3	+	// It opens one window filled with solid green, prints "mapped WxH" after the
	4	+	// first ConfigureNotify and "focus" on each FocusIn, and exits 0 when the
	5	+	// window manager sends WM_DELETE_WINDOW.
	6	+	//
	7	+	// With -override it also maps a magenta override-redirect window after the
	8	+	// main one is mapped (prints "override mapped") and unmaps it after
	9	+	// -override-for (prints "override unmapped"). With -override-dismiss-on-focusout
	10	+	// it unmaps it instead when the main window loses focus (prints "dismissed").
	11	+	package main
	12	+
	13	+	import (
	14	+	"encoding/binary"
	15	+	"flag"
	16	+	"fmt"
	17	+	"os"
	18	+	"strconv"
	19	+	"strings"
	20	+	"time"
	21	+
	22	+	"golang.org/x/sys/unix"
	23	+
	24	+	"bnema.dev/xturbo"
	25	+	"bnema.dev/xturbo/shape"
	26	+	"bnema.dev/xturbo/xproto"
	27	+	)
	28	+
	29	+	const (
	30	+	green = 0x00ff00
	31	+	magenta = 0xff00ff
	32	+	)
	33	+
	34	+	func main() {
	35	+	if err := run(); err != nil {
	36	+	fmt.Fprintln(os.Stderr, "x11probe:", err)
	37	+	os.Exit(1)
	38	+	}
	39	+	}
	40	+
	41	+	func run() error {
	42	+	class := flag.String("class", "X11Probe", "WM_CLASS class (the instance is x11probe)")
	43	+	title := flag.String("title", "probe", "_NET_WM_NAME")
	44	+	size := flag.String("size", "300x200", "window size WxH")
	45	+	sleep := flag.Duration("sleep", 0, "wait before mapping the window")
	46	+	override := flag.Bool("override", false, "map a magenta override-redirect window after the main one")
	47	+	overrideAt := flag.String("override-at", "100,50", "override window position X,Y in root coordinates")
	48	+	overrideSize := flag.String("override-size", "120x80", "override window size WxH")
	49	+	overrideFor := flag.Duration("override-for", 0, "unmap the override window after this delay (0: never)")
	50	+	overrideType := flag.String("override-type", "menu", "override window type: menu or tooltip")
	51	+	overrideShape := flag.Bool("override-shape", false, "give the override window an empty input shape")
	52	+	dismiss := flag.Bool("override-dismiss-on-focusout", false, "unmap the override window when the main window loses focus")
	53	+	flag.Parse()
	54	+	w, h, ok := parseSize(*size)
	55	+	if !ok {
	56	+	return fmt.Errorf("bad -size %q", *size)
	57	+	}
	58	+
	59	+	c, err := xturbo.Dial("") // $DISPLAY
	60	+	if err != nil {
	61	+	return err
	62	+	}
	63	+	defer c.Close()
	64	+
	65	+	var atoms [7]uint32
	66	+	if err := c.InternAtoms([]string{"WM_PROTOCOLS", "WM_DELETE_WINDOW", "_NET_WM_NAME", "UTF8_STRING",
	67	+	"_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU", "_NET_WM_WINDOW_TYPE_TOOLTIP"}, false, atoms[:]); err != nil {
	68	+	return err
	69	+	}
	70	+	protocols, deleteWin, netWMName, utf8 := xproto.Atom(atoms[0]), xproto.Atom(atoms[1]), xproto.Atom(atoms[2]), xproto.Atom(atoms[3])
	71	+	typeAtom, typeMenu, typeTooltip := xproto.Atom(atoms[4]), atoms[5], atoms[6]
	72	+
	73	+	b := c.Buf()
	74	+	xwin, err := c.NewXID()
	75	+	if err != nil {
	76	+	return err
	77	+	}
	78	+	xgc, err := c.NewXID()
	79	+	if err != nil {
	80	+	return err
	81	+	}
	82	+	win, gc := xproto.Window(xwin), xproto.Gcontext(xgc)
	83	+
	84	+	var v xproto.CreateWindowValues
	85	+	v.SetEventMask(xproto.EventMaskExposure \| xproto.EventMaskStructureNotify \| xproto.EventMaskFocusChange)
	86	+	xproto.CreateWindow(b, 0, win, xproto.Window(c.Root()), 0, 0, uint16(w), uint16(h), 0, xproto.WindowClassInputOutput, 0, &v)
	87	+
	88	+	wmClass := []byte("x11probe\x00" + *class + "\x00")
	89	+	xproto.ChangeProperty(b, xproto.PropModeReplace, win, xproto.AtomWmClass, xproto.AtomString, 8, uint32(len(wmClass)), wmClass)
	90	+	name := []byte(*title)
	91	+	xproto.ChangeProperty(b, xproto.PropModeReplace, win, netWMName, utf8, 8, uint32(len(name)), name)
	92	+	var del [4]byte
	93	+	binary.LittleEndian.PutUint32(del[:], uint32(deleteWin))
	94	+	xproto.ChangeProperty(b, xproto.PropModeReplace, win, protocols, xproto.AtomAtom, 32, 1, del[:])
	95	+
	96	+	var gv xproto.CreateGCValues
	97	+	gv.SetForeground(green)
	98	+	xproto.CreateGC(b, gc, xproto.Drawable(win), &gv)
	99	+	if err := c.Flush(); err != nil {
	100	+	return err
	101	+	}
	102	+	time.Sleep(*sleep)
	103	+	xproto.MapWindow(b, win)
	104	+
	105	+	// The override-redirect window is created once the main window is mapped.
	106	+	var ovWin xproto.Window
	107	+	var ovAt, ovSz [2]int
	108	+	if *override {
	109	+	var ok1, ok2 bool
	110	+	x, y, found := strings.Cut(*overrideAt, ",")
	111	+	ovAt[0], ovAt[1] = atoi(x), atoi(y)
	112	+	ok1 = found
	113	+	ovSz[0], ovSz[1], ok2 = parseSize(*overrideSize)
	114	+	if !ok1 \|\| !ok2 \|\| (overrideType != "menu" && overrideType != "tooltip") {
	115	+	return fmt.Errorf("bad -override-at/-override-size/-override-type")
	116	+	}
	117	+	}
	118	+	var ovDeadline time.Time // zero: no timed unmap pending
	119	+	unmapOverride := func(msg string) {
	120	+	if ovWin == 0 {
	121	+	return
	122	+	}
	123	+	xproto.UnmapWindow(b, ovWin)
	124	+	ovWin = 0
	125	+	ovDeadline = time.Time{}
	126	+	fmt.Println(msg)
	127	+	}
	128	+	mapOverride := func() error {
	129	+	id, err := c.NewXID()
	130	+	if err != nil {
	131	+	return err
	132	+	}
	133	+	ovWin = xproto.Window(id)
	134	+	var ov xproto.CreateWindowValues
	135	+	ov.SetBackgroundPixel(magenta).SetOverrideRedirect(true)
	136	+	xproto.CreateWindow(b, 0, ovWin, xproto.Window(c.Root()), int16(ovAt[0]), int16(ovAt[1]), uint16(ovSz[0]), uint16(ovSz[1]), 0, xproto.WindowClassInputOutput, 0, &ov)
	137	+	typ := typeMenu
	138	+	if *overrideType == "tooltip" {
	139	+	typ = typeTooltip
	140	+	}
	141	+	var tb [4]byte
	142	+	binary.LittleEndian.PutUint32(tb[:], typ)
	143	+	xproto.ChangeProperty(b, xproto.PropModeReplace, ovWin, typeAtom, xproto.AtomAtom, 32, 1, tb[:])
	144	+	if *overrideShape {
	145	+	shape.Rectangles(b, shape.SoSet, shape.SkInput, 0, ovWin, 0, 0, nil)
	146	+	}
	147	+	xproto.MapWindow(b, ovWin)
	148	+	fmt.Println("override mapped")
	149	+	if *overrideFor > 0 {
	150	+	ovDeadline = time.Now().Add(*overrideFor)
	151	+	}
	152	+	return nil
	153	+	}
	154	+	var ovErr error
	155	+
	156	+	mapped, done := false, false
	157	+	cw, ch := uint16(w), uint16(h) // current size, tracked from ConfigureNotify
	158	+	hd := &xturbo.Handler{
	159	+	OnEvent: func(ev *xturbo.Event) {
	160	+	switch ev.Kind {
	161	+	case xproto.KindExpose:
	162	+	xproto.PolyFillRectangle(b, xproto.Drawable(win), gc, []xproto.Rectangle{{Width: cw, Height: ch}})
	163	+	case xproto.KindConfigureNotify:
	164	+	e := xproto.ConfigureNotifyOf(ev)
	165	+	if e.Window() != win {
	166	+	break
	167	+	}
	168	+	cw, ch = e.Width(), e.Height()
	169	+	if !mapped {
	170	+	mapped = true
	171	+	fmt.Printf("mapped %dx%d\n", cw, ch)
	172	+	if *override {
	173	+	ovErr = mapOverride()
	174	+	}
	175	+	}
	176	+	case xproto.KindFocusIn:
	177	+	fmt.Println("focus")
	178	+	case xproto.KindFocusOut:
	179	+	if *dismiss && xproto.FocusOutOf(ev).Event() == win {
	180	+	unmapOverride("dismissed")
	181	+	}
	182	+	case xproto.KindClientMessage:
	183	+	e := xproto.ClientMessageOf(ev)
	184	+	if e.Type() == protocols && e.Format() == 32 && e.Data().Data32()[0] == uint32(deleteWin) {
	185	+	done = true
	186	+	}
	187	+	}
	188	+	},
	189	+	OnError: func(e *xturbo.XError) { fmt.Fprintln(os.Stderr, "x11probe:", e) },
	190	+	}
	191	+	for !done {
	192	+	events := int16(unix.POLLIN)
	193	+	if err := c.Flush(); err == xturbo.ErrWouldBlock {
	194	+	events \|= unix.POLLOUT
	195	+	} else if err != nil {
	196	+	return err
	197	+	}
	198	+	timeout := -1
	199	+	if !ovDeadline.IsZero() {
	200	+	timeout = max(int(time.Until(ovDeadline).Milliseconds()), 0)
	201	+	}
	202	+	fds := []unix.PollFd{{Fd: int32(c.Fd()), Events: events}}
	203	+	if _, err := unix.Poll(fds, timeout); err != nil && err != unix.EINTR {
	204	+	return err
	205	+	}
	206	+	if !ovDeadline.IsZero() && !time.Now().Before(ovDeadline) {
	207	+	unmapOverride("override unmapped")
	208	+	}
	209	+	if err := c.Dispatch(hd); err != nil {
	210	+	return err
	211	+	}
	212	+	if ovErr != nil {
	213	+	return ovErr
	214	+	}
	215	+	}
	216	+	return nil
	217	+	}
	218	+
	219	+	func parseSize(s string) (w, h int, ok bool) {
	220	+	ws, hs, found := strings.Cut(s, "x")
	221	+	if !found {
	222	+	return 0, 0, false
	223	+	}
	224	+	w, err1 := strconv.Atoi(ws)
	225	+	h, err2 := strconv.Atoi(hs)
	226	+	return w, h, err1 == nil && err2 == nil && w > 0 && h > 0 && w < 0xffff && h < 0xffff
	227	+	}
	228	+
	229	+	func atoi(s string) int {
	230	+	n, _ := strconv.Atoi(s)
	231	+	return n
	232	+	}

A internal/app/xwayland_test.go +394 -0

@@ -0,0 +1,394 @@
	1	+	//go:build xwayland
	2	+
	3	+	// End-to-end test of the built-in XWM: a real Xwayland and a real X11 client
	4	+	// (testdata/x11probe) run against a headless NeferWL. It needs Xwayland on
	5	+	// PATH and a GPU, so it is excluded from `go test ./...` and CI. Run it with
	6	+	// `make e2e-xwayland`.
	7	+	package app
	8	+
	9	+	import (
	10	+	"context"
	11	+	"image"
	12	+	"image/png"
	13	+	"io"
	14	+	"os"
	15	+	"os/exec"
	16	+	"path/filepath"
	17	+	"regexp"
	18	+	"strings"
	19	+	"sync"
	20	+	"testing"
	21	+	"time"
	22	+
	23	+	"github.com/bnema/zerowrap"
	24	+
	25	+	"github.com/bnema/neferwl/internal/adapters/config"
	26	+	"github.com/bnema/neferwl/internal/adapters/statefile"
	27	+	"github.com/bnema/neferwl/internal/ports"
	28	+	)
	29	+
	30	+	const (
	31	+	xwaylandTimeout = 10 * time.Second
	32	+	xwaylandW, xwaylandH = 640, 360
	33	+	)
	34	+
	35	+	var displayRe = regexp.MustCompile(`"DISPLAY":"(:\d+)"`)
	36	+
	37	+	// probe is a running x11probe.
	38	+	type probe struct {
	39	+	cmd *exec.Cmd
	40	+	out *lockedBuffer
	41	+	waited chan error
	42	+	}
	43	+
	44	+	// xwaylandEnv is a running headless compositor with the built-in XWM.
	45	+	type xwaylandEnv struct {
	46	+	bin, display, statePath, shots string
	47	+	script *io.PipeWriter
	48	+	}
	49	+
	50	+	// startXwayland runs the compositor on one headless output and waits for its
	51	+	// X11 display. It skips the test without Xwayland and stops everything when
	52	+	// the test ends.
	53	+	func startXwayland(t testing.T) xwaylandEnv {
	54	+	t.Helper()
	55	+	if _, err := exec.LookPath("Xwayland"); err != nil {
	56	+	t.Skip("Xwayland not on PATH")
	57	+	}
	58	+	// The compositor must not read or write the live session's state.
	59	+	for _, k := range []string{"NEFERWL_STATE", "NEFERWL_SLOT"} {
	60	+	if v, ok := os.LookupEnv(k); ok {
	61	+	os.Unsetenv(k)
	62	+	t.Cleanup(func() { os.Setenv(k, v) })
	63	+	}
	64	+	}
	65	+	runtime := t.TempDir()
	66	+	t.Setenv("XDG_RUNTIME_DIR", runtime)
	67	+	t.Setenv("XDG_STATE_HOME", t.TempDir())
	68	+	shots := t.TempDir()
	69	+	bin := buildProbe(t)
	70	+
	71	+	script, scriptW := io.Pipe()
	72	+	logs := &lockedBuffer{}
	73	+	ctx, cancel := context.WithCancel(zerowrap.WithCtx(context.Background(), zerowrap.New(zerowrap.Config{Level: "info", Format: "json", Output: logs})))
	74	+	cfg := config.Defaults()
	75	+	cfg.Xwayland = ports.XwaylandConfig{Backend: ports.XwaylandBuiltin, Binary: "Xwayland"}
	76	+	done := make(chan error, 1)
	77	+	go func() {
	78	+	done <- Run(ctx, Options{
	79	+	Backend: "headless", NoTerminal: true, Config: cfg, Script: script,
	80	+	ScreenshotDir: shots, Sizes: [][2]int{{xwaylandW, xwaylandH}},
	81	+	})
	82	+	}()
	83	+	t.Cleanup(func() {
	84	+	if t.Failed() {
	85	+	t.Logf("compositor log:\n%s", logs.String())
	86	+	}
	87	+	cancel()
	88	+	_ = scriptW.Close()
	89	+	select {
	90	+	case err := <-done:
	91	+	if err != nil {
	92	+	t.Errorf("Run: %v", err)
	93	+	}
	94	+	case <-time.After(5 * time.Second):
	95	+	t.Error("Run did not stop")
	96	+	}
	97	+	})
	98	+
	99	+	var display string
	100	+	until(t, "X11 display in the log", func() bool {
	101	+	if m := displayRe.FindStringSubmatch(logs.String()); m != nil {
	102	+	display = m[1]
	103	+	return true
	104	+	}
	105	+	return false
	106	+	})
	107	+	statePath, err := statefile.Path(runtime, "wayland-1")
	108	+	if err != nil {
	109	+	t.Fatal(err)
	110	+	}
	111	+	return &xwaylandEnv{bin: bin, display: display, statePath: statePath, shots: shots, script: scriptW}
	112	+	}
	113	+
	114	+	// TestXwaylandProbe: an X11 client is managed by the built-in XWM. It shows
	115	+	// up in the state with its class and pid, is drawn, tiles next to a second
	116	+	// one, receives focus and is closed by the close-window bind.
	117	+	func TestXwaylandProbe(t *testing.T) {
	118	+	e := startXwayland(t)
	119	+	bin, display, statePath, shots, scriptW := e.bin, e.display, e.statePath, e.shots, e.script
	120	+	first := startProbe(t, bin, display, "-title", "one")
	121	+	until(t, "probe one mapped", func() bool { return strings.Contains(first.out.String(), "mapped ") })
	122	+
	123	+	var st statefile.State
	124	+	until(t, "one visible X11Probe window", func() bool {
	125	+	st = readState(statePath)
	126	+	return len(st.Windows) == 1 && st.Windows[0].AppID == "X11Probe" && st.Windows[0].Visible
	127	+	})
	128	+	if w := st.Windows[0]; w.PID != first.cmd.Process.Pid {
	129	+	t.Errorf("window pid %d, want %d", w.PID, first.cmd.Process.Pid)
	130	+	}
	131	+
	132	+	// The client draws green and the compositor shows it.
	133	+	id := st.Windows[0].ID
	134	+	until(t, "green window in latest.png", func() bool {
	135	+	r, ok := tileRect(readState(statePath), id)
	136	+	return ok && greenShare(filepath.Join(shots, "latest.png"), r) >= 0.5
	137	+	})
	138	+
	139	+	// Focus round trip: the compositor focused the window, the client saw it.
	140	+	until(t, "probe one focus", func() bool { return strings.Contains(first.out.String(), "focus") })
	141	+
	142	+	// A second probe tiles beside the first.
	143	+	second := startProbe(t, bin, display, "-title", "two")
	144	+	until(t, "two tiled windows", func() bool {
	145	+	st = readState(statePath)
	146	+	if len(st.Windows) != 2 {
	147	+	return false
	148	+	}
	149	+	for _, w := range st.Windows {
	150	+	if w.AppID != "X11Probe" \|\| !w.Visible \|\| w.Floating {
	151	+	return false
	152	+	}
	153	+	}
	154	+	return true
	155	+	})
	156	+	until(t, "probe two focus", func() bool { return strings.Contains(second.out.String(), "focus") })
	157	+
	158	+	// The close-window bind asks the focused (second) probe to close.
	159	+	if _, err := io.WriteString(scriptW, "key Super+q\n"); err != nil {
	160	+	t.Fatal(err)
	161	+	}
	162	+	select {
	163	+	case err := <-second.waited:
	164	+	if err != nil {
	165	+	t.Errorf("probe two exited with %v, want 0", err)
	166	+	}
	167	+	case <-time.After(2 * time.Second):
	168	+	t.Fatal("probe two did not exit within 2s of Super+q")
	169	+	}
	170	+	until(t, "one window left", func() bool {
	171	+	st = readState(statePath)
	172	+	return len(st.Windows) == 1 && st.Windows[0].PID == first.cmd.Process.Pid
	173	+	})
	174	+	select {
	175	+	case err := <-first.waited:
	176	+	t.Fatalf("probe one exited (%v) though only the focused probe was closed", err)
	177	+	default:
	178	+	}
	179	+	}
	180	+
	181	+	// buildProbe builds testdata/x11probe.
	182	+	func buildProbe(t *testing.T) string {
	183	+	t.Helper()
	184	+	bin := filepath.Join(t.TempDir(), "x11probe")
	185	+	build := exec.Command("go", "build", "-o", bin, "./testdata/x11probe")
	186	+	build.Env = append(os.Environ(), "CGO_ENABLED=0")
	187	+	if out, err := build.CombinedOutput(); err != nil {
	188	+	t.Fatalf("build x11probe: %v: %s", err, out)
	189	+	}
	190	+	return bin
	191	+	}
	192	+
	193	+	// startProbe starts x11probe on display, with X11 as its only display
	194	+	// server, and stops it when the test ends.
	195	+	func startProbe(t testing.T, bin, display string, args ...string) probe {
	196	+	t.Helper()
	197	+	p := &probe{out: &lockedBuffer{}, waited: make(chan error, 1)}
	198	+	p.cmd = exec.Command(bin, args...)
	199	+	p.cmd.Env = append(envWithout("DISPLAY", "WAYLAND_DISPLAY", "NEFERWL_STATE", "NEFERWL_SLOT"), "DISPLAY="+display)
	200	+	p.cmd.Stdout = p.out
	201	+	stderr := &lockedBuffer{}
	202	+	p.cmd.Stderr = stderr
	203	+	if err := p.cmd.Start(); err != nil {
	204	+	t.Fatal(err)
	205	+	}
	206	+	var exited sync.Once
	207	+	go func() { p.waited <- p.cmd.Wait() }()
	208	+	t.Cleanup(func() {
	209	+	exited.Do(func() {
	210	+	_ = p.cmd.Process.Kill()
	211	+	select {
	212	+	case <-p.waited:
	213	+	case <-time.After(2 * time.Second):
	214	+	}
	215	+	})
	216	+	if s := stderr.String(); s != "" {
	217	+	t.Logf("x11probe stderr: %s", s)
	218	+	}
	219	+	})
	220	+	return p
	221	+	}
	222	+
	223	+	func envWithout(keys ...string) []string {
	224	+	var env []string
	225	+	next:
	226	+	for _, kv := range os.Environ() {
	227	+	for _, k := range keys {
	228	+	if strings.HasPrefix(kv, k+"=") {
	229	+	continue next
	230	+	}
	231	+	}
	232	+	env = append(env, kv)
	233	+	}
	234	+	return env
	235	+	}
	236	+
	237	+	// until polls cond every 20 ms and fails the test after xwaylandTimeout.
	238	+	func until(t *testing.T, what string, cond func() bool) {
	239	+	t.Helper()
	240	+	for deadline := time.Now().Add(xwaylandTimeout); !cond(); time.Sleep(20 * time.Millisecond) {
	241	+	if time.Now().After(deadline) {
	242	+	t.Fatalf("timeout waiting for %s", what)
	243	+	}
	244	+	}
	245	+	}
	246	+
	247	+	// readState returns the current state file, or an empty state while it does
	248	+	// not exist or is being replaced.
	249	+	func readState(path string) statefile.State {
	250	+	st, err := statefile.Read(path)
	251	+	if err != nil {
	252	+	return statefile.State{}
	253	+	}
	254	+	return st
	255	+	}
	256	+
	257	+	// tileRect finds the rectangle of window id in the tiled columns.
	258	+	func tileRect(st statefile.State, id uint64) (image.Rectangle, bool) {
	259	+	for _, ws := range st.Workspaces {
	260	+	for _, c := range ws.Columns {
	261	+	for _, w := range c.Windows {
	262	+	if w.ID == id {
	263	+	return image.Rect(w.X, w.Y, w.X+w.Width, w.Y+w.Height), true
	264	+	}
	265	+	}
	266	+	}
	267	+	}
	268	+	return image.Rectangle{}, false
	269	+	}
	270	+
	271	+	// greenShare is the fraction of pixels of r in the PNG at path that are
	272	+	// clearly green; 0 when the image cannot be read yet.
	273	+	func greenShare(path string, r image.Rectangle) float64 {
	274	+	f, err := os.Open(path)
	275	+	if err != nil {
	276	+	return 0
	277	+	}
	278	+	defer f.Close()
	279	+	img, err := png.Decode(f)
	280	+	if err != nil {
	281	+	return 0
	282	+	}
	283	+	r = r.Intersect(img.Bounds())
	284	+	if r.Empty() {
	285	+	return 0
	286	+	}
	287	+	n := 0
	288	+	for y := r.Min.Y; y < r.Max.Y; y++ {
	289	+	for x := r.Min.X; x < r.Max.X; x++ {
	290	+	cr, cg, cb, _ := img.At(x, y).RGBA()
	291	+	if cg>>8 > 200 && cr>>8 < 60 && cb>>8 < 60 {
	292	+	n++
	293	+	}
	294	+	}
	295	+	}
	296	+	return float64(n) / float64(r.Dx()*r.Dy())
	297	+	}
	298	+
	299	+	// magentaShare is the fraction of pixels of r in the PNG at path that are
	300	+	// clearly magenta; 0 when the image cannot be read yet.
	301	+	func magentaShare(path string, r image.Rectangle) float64 {
	302	+	f, err := os.Open(path)
	303	+	if err != nil {
	304	+	return 0
	305	+	}
	306	+	defer f.Close()
	307	+	img, err := png.Decode(f)
	308	+	if err != nil {
	309	+	return 0
	310	+	}
	311	+	r = r.Intersect(img.Bounds())
	312	+	if r.Empty() {
	313	+	return 0
	314	+	}
	315	+	n := 0
	316	+	for y := r.Min.Y; y < r.Max.Y; y++ {
	317	+	for x := r.Min.X; x < r.Max.X; x++ {
	318	+	cr, cg, cb, _ := img.At(x, y).RGBA()
	319	+	if cr>>8 > 200 && cg>>8 < 60 && cb>>8 > 200 {
	320	+	n++
	321	+	}
	322	+	}
	323	+	}
	324	+	return float64(n) / float64(r.Dx()*r.Dy())
	325	+	}
	326	+
	327	+	// TestXwaylandOverride: an override-redirect window (a menu) of an X11 client
	328	+	// is drawn above the toplevel at its X position, is not a window in the
	329	+	// state, leaves keyboard focus on the toplevel and vanishes when unmapped.
	330	+	func TestXwaylandOverride(t *testing.T) {
	331	+	e := startXwayland(t)
	332	+	// Probe unmaps the menu 3 s after mapping it; the first checks run well
	333	+	// inside that window.
	334	+	p := startProbe(t, e.bin, e.display, "-title", "menu", "-override", "-override-at", "100,50",
	335	+	"-override-size", "120x80", "-override-for", "3s")
	336	+	until(t, "override mapped", func() bool { return strings.Contains(p.out.String(), "override mapped") })
	337	+	shot := filepath.Join(e.shots, "latest.png")
	338	+	box := image.Rect(100, 50, 220, 130) // output-local: one output at the X origin
	339	+	until(t, "magenta menu in latest.png", func() bool { return magentaShare(shot, box) >= 0.9 })
	340	+
	341	+	var st statefile.State
	342	+	until(t, "focused X11Probe toplevel", func() bool {
	343	+	st = readState(e.statePath)
	344	+	return len(st.Windows) >= 1 && st.Window != nil
	345	+	})
	346	+	if len(st.Windows) != 1 \|\| st.Windows[0].AppID != "X11Probe" {
	347	+	t.Fatalf("state windows = %+v, want only the X11Probe toplevel", st.Windows)
	348	+	}
	349	+	id := st.Windows[0].ID
	350	+	if st.Window.ID != id {
	351	+	t.Errorf("focused window = %+v, want the toplevel %d", st.Window, id)
	352	+	}
	353	+	until(t, "probe focus", func() bool { return strings.Contains(p.out.String(), "focus") })
	354	+
	355	+	// The menu is above the toplevel: its box is magenta, not green.
	356	+	if g := greenShare(shot, box); g > 0.1 {
	357	+	t.Errorf("green share in menu box = %.2f, menu is not above the toplevel", g)
	358	+	}
	359	+	until(t, "override unmapped", func() bool { return strings.Contains(p.out.String(), "override unmapped") })
	360	+	until(t, "menu gone from latest.png", func() bool {
	361	+	return magentaShare(shot, box) == 0 && greenShare(shot, box) >= 0.9
	362	+	})
	363	+	if st := readState(e.statePath); st.Window == nil \|\| st.Window.ID != id {
	364	+	t.Errorf("focus after the menu closed = %+v, want %d", st.Window, id)
	365	+	}
	366	+	}
	367	+
	368	+	// TestXwaylandOverrideDismiss: the menu owner sees FocusOut on the toplevel
	369	+	// when core focuses another window, which is how toolkits close their menus.
	370	+	func TestXwaylandOverrideDismiss(t *testing.T) {
	371	+	e := startXwayland(t)
	372	+	p := startProbe(t, e.bin, e.display, "-title", "menu", "-override", "-override-dismiss-on-focusout")
	373	+	until(t, "override mapped", func() bool { return strings.Contains(p.out.String(), "override mapped") })
	374	+	until(t, "probe focus", func() bool { return strings.Contains(p.out.String(), "focus") })
	375	+	// A second X11 window takes the focus away from the menu owner.
	376	+	startProbe(t, e.bin, e.display, "-title", "other")
	377	+	until(t, "menu dismissed on FocusOut", func() bool { return strings.Contains(p.out.String(), "dismissed") })
	378	+	box := image.Rect(100, 50, 220, 130)
	379	+	until(t, "menu gone from latest.png", func() bool {
	380	+	return magentaShare(filepath.Join(e.shots, "latest.png"), box) == 0
	381	+	})
	382	+	}
	383	+
	384	+	// TestXwaylandOverrideShape: a menu with an empty input shape is still drawn
	385	+	// and still not a window.
	386	+	func TestXwaylandOverrideShape(t *testing.T) {
	387	+	e := startXwayland(t)
	388	+	p := startProbe(t, e.bin, e.display, "-title", "menu", "-override", "-override-shape", "-override-type", "tooltip")
	389	+	until(t, "override mapped", func() bool { return strings.Contains(p.out.String(), "override mapped") })
	390	+	until(t, "magenta tooltip in latest.png", func() bool {
	391	+	return magentaShare(filepath.Join(e.shots, "latest.png"), image.Rect(100, 50, 220, 130)) >= 0.9
	392	+	})
	393	+	until(t, "only the toplevel in state", func() bool { return len(readState(e.statePath).Windows) == 1 })
	394	+	}

M internal/core/client.go +8 -0


@@ -70,6 +70,14 @@ func (c *Core) clientEvent(ctx context.Context, ev ports.ClientEvent) (publish,
70	70		if _, w := c.screenOf(v.ID); w != nil {
71	71		w.SetModal(v.ID, v.Modal)
72	72		}
	73	+	case ports.UnmanagedMapped, ports.UnmanagedMoved, ports.UnmanagedUnmapped:
	74	+	changed, err := c.unmanagedEvent(ctx, v)
	75	+	if err != nil {
	76	+	return false, true
	77	+	}
	78	+	if !changed {
	79	+	return false, false
	80	+	}
73	81		case ports.WindowUnmapped:
74	82		if c.unmapClient(ctx, v) != nil {
75	83		return false, true

M internal/core/core.go +16 -5


@@ -103,9 +103,11 @@ type Core struct {
103	103		binds map[binding]Action
104	104		pressed map[string]bool
105	105		configures configures
106		-	pointer WindowID
107		-	grab WindowID
108		-	buttons map[uint32]bool
	106	+	// placed is the last position (X, Y of the Rect) sent in a PlaceWindow, per window.
	107	+	placed map[WindowID]Rect
	108	+	pointer WindowID
	109	+	grab WindowID
	110	+	buttons map[uint32]bool
109	111		// drag is the pointer drag in progress (drag.go); swallow holds the
110	112		// buttons whose release no client must see. mods are the modifiers
111	113		// held, cmdMod the one keyboard.cmd names. lastButton is the latest

@@ -144,7 +146,11 @@ type Core struct {
144	146		// popups are the placed xdg_popups; popupOrder stacks them, oldest first.
145	147		popups map[WindowID]*popupState
146	148		popupOrder []WindowID
147		-	keyboard keyboard
	149	+	// unmanaged are the mapped override-redirect windows, unmanagedOrder
	150	+	// stacks them, bottom to top (unmanaged.go).
	151	+	unmanaged map[WindowID]*unmanagedState
	152	+	unmanagedOrder []WindowID
	153	+	keyboard keyboard
148	154		// activity is when core last told wayland about user input
149	155		// (ports.UserActivity), sent at most once per ActivityInterval.
150	156		activity time.Time

@@ -417,7 +423,7 @@ func New(cfg ports.Config, ch Channels, opts Options) (*Core, error) {
417	423		return nil, fmt.Errorf("scenes, layouts, constraints, state and workspaces must have capacity 1")
418	424		}
419	425		// A placeholder screen holds windows until the first output arrives.
420		-	c := &Core{inputKeys: map[string]bool{}, slots: map[slotKey]slotState{}, placement: newSpawnPlacement(), windows: newWindowRegistry(), popups: map[WindowID]popupState{}, ch: ch, opts: opts, pressed: map[string]bool{}, buttons: map[uint32]bool{}, swallow: map[uint32]bool{}, configures: newConfigures(), ping: make(chan chan struct{}), out: newOutbox()}
	426	+	c := &Core{inputKeys: map[string]bool{}, slots: map[slotKey]slotState{}, placement: newSpawnPlacement(), windows: newWindowRegistry(), popups: map[WindowID]popupState{}, unmanaged: map[WindowID]*unmanagedState{}, unmanagedOrder: make([]WindowID, 0, 32), ch: ch, opts: opts, pressed: map[string]bool{}, buttons: map[uint32]bool{}, swallow: map[uint32]bool{}, configures: newConfigures(), placed: map[WindowID]Rect{}, ping: make(chan chan struct{}), out: newOutbox()}
421	427		c.screens = []*screen{{mon: newMonitorWithIDs("", "", &c.nextWorkspaceID), scale: 1, cfgScale: 1}}
422	428		if err := c.apply(cfg); err != nil {
423	429		return nil, err

@@ -994,6 +1000,11 @@ func (c *Core) hit(x, y float64) (WindowID, float64, float64) {
994	1000		}
995	1001		sc := c.screens[i]
996	1002		lx, ly := x-float64(sc.x), y-float64(sc.y)
	1003	+	// Unmanaged windows are over everything, popups included; a locked
	1004	+	// pointer keeps its focus (a mouse-look game).
	1005	+	if id, px, py := c.unmanagedAt(sc, lx, ly); id != 0 {
	1006	+	return id, px, py
	1007	+	}
997	1008		// Layer popups are over everything; window popups are over the windows
998	1009		// only, under the top and overlay layers (as drawn).
999	1010		if id, px, py := c.popupAt(sc, lx, ly, true); id != 0 {

M internal/core/core_test.go +4 -0


@@ -38,6 +38,10 @@ func command(t *testing.T, ch <-chan ports.ClientCommand) ports.ClientCommand {
38	38		for {
39	39		switch v := receive(t, ch); v.(type) {
40	40		case nil, ports.SetOutputs, ports.UserActivity:
	41	+	case ports.PlaceWindow:
	42	+	// Only Positioned (X11) windows are placed; every scenario
	43	+	// using this helper maps xdg windows.
	44	+	t.Fatalf("unexpected %+v", v)
41	45		default:
42	46		return v
43	47		}

M internal/core/datadrag.go +1 -1


@@ -101,7 +101,7 @@ func dataDragHitChanged(ev ports.ClientEvent) bool {
101	101		case ports.LayerChanged, ports.InputRegionChanged, ports.WindowMapped,
102	102		ports.WindowResized, ports.PopupRequest, ports.PopupMapped,
103	103		ports.OutputPower, ports.WindowParent, ports.WindowModal,
104		-	ports.WindowUnmapped, ports.PointerWarp, ports.WindowMoveRequest,
	104	+	ports.WindowUnmapped, ports.UnmanagedMapped, ports.UnmanagedMoved, ports.UnmanagedUnmapped, ports.PointerWarp, ports.WindowMoveRequest,
105	105		ports.WindowFullscreenRequest, ports.WorkspaceActivate, ports.WindowActivate:
106	106		return true
107	107		default:

A internal/core/place_test.go +80 -0

@@ -0,0 +1,80 @@
	1	+	package core_test
	2	+
	3	+	import (
	4	+	"context"
	5	+	"testing"
	6	+
	7	+	"github.com/bnema/neferwl/internal/core"
	8	+	"github.com/bnema/neferwl/internal/ports"
	9	+	)
	10	+
	11	+	// places collects the PlaceWindow commands queued so far.
	12	+	func places(commands chan ports.ClientCommand) (out []ports.PlaceWindow) {
	13	+	for len(commands) > 0 {
	14	+	if v, ok := (<-commands).(ports.PlaceWindow); ok {
	15	+	out = append(out, v)
	16	+	}
	17	+	}
	18	+	return out
	19	+	}
	20	+
	21	+	func TestPlaceWindow(t *testing.T) {
	22	+	cfg := altCmdDefaults()
	23	+	cfg.Border.Width = 0
	24	+	cfg.Layout.Gaps = 8
	25	+	client := make(chan ports.ClientEvent, 16)
	26	+	input := make(chan ports.InputEvent, 16)
	27	+	output := make(chan ports.OutputEvent, 8)
	28	+	commands := make(chan ports.ClientCommand, 256)
	29	+	scenes := make(chan []ports.Scene, 1)
	30	+	c, err := core.New(cfg, core.Channels{Client: client, Input: input, Output: output, Commands: commands, Scenes: scenes}, core.Options{})
	31	+	if err != nil {
	32	+	t.Fatal(err)
	33	+	}
	34	+	ctx, cancel := context.WithCancel(context.Background())
	35	+	defer cancel()
	36	+	go func() { _ = c.Run(ctx) }()
	37	+	output <- ports.OutputAdded{Info: ports.OutputInfo{Name: "OUT-1", Width: 100, Height: 80}}
	38	+	scene(t, scenes)
	39	+
	40	+	// An xdg window is never placed.
	41	+	client <- ports.WindowMapped{ID: 1}
	42	+	scene(t, scenes)
	43	+	if got := places(commands); len(got) != 0 {
	44	+	t.Fatal(got)
	45	+	}
	46	+
	47	+	// A positioned window is placed once on map.
	48	+	client <- ports.WindowMapped{ID: 2, Positioned: true}
	49	+	scene(t, scenes)
	50	+	first := places(commands)
	51	+	if len(first) != 1 \|\| first[0].ID != 2 {
	52	+	t.Fatal(first)
	53	+	}
	54	+
	55	+	// The same layout sends nothing more.
	56	+	client <- ports.WindowMapped{ID: 1}
	57	+	scene(t, scenes)
	58	+	if got := places(commands); len(got) != 0 {
	59	+	t.Fatal(got)
	60	+	}
	61	+
	62	+	// A position change sends it again, for the positioned window only.
	63	+	client <- ports.WindowMapped{ID: 3}
	64	+	scene(t, scenes)
	65	+	moved := places(commands)
	66	+	if len(moved) != 1 \|\| moved[0].ID != 2 \|\| (moved[0].X == first[0].X && moved[0].Y == first[0].Y) {
	67	+	t.Fatal(first, moved)
	68	+	}
	69	+
	70	+	// Unmap prunes it: mapping again places from nothing.
	71	+	client <- ports.WindowUnmapped{ID: 2}
	72	+	scene(t, scenes)
	73	+	places(commands)
	74	+	client <- ports.WindowMapped{ID: 2, Positioned: true}
	75	+	scene(t, scenes)
	76	+	again := places(commands)
	77	+	if len(again) != 1 \|\| again[0].ID != 2 {
	78	+	t.Fatal(again)
	79	+	}
	80	+	}

M internal/core/scene.go +12 -1


@@ -20,7 +20,7 @@ func (c Core) sceneFor(ctx context.Context, i int, sc screen, only *screen, ca
20	20		// layout is what is drawn; settled (same indexes) is where the
21	21		// windows are going, and alone sizes the configures.
22	22		layout, settled := sc.shown, sc.settledLayout
23		-	scene = ports.Scene{Security: c.security, Output: sc.name(), OutputWidth: o.W, OutputHeight: o.H, WorkspaceClip: clip, Scale: sc.scale, Transform: sc.transform, Off: sc.off, Background: c.cfg.Background.Color, Border: ports.Border{Radius: c.cfg.Border.Radius, Width: c.cfg.Border.Width, Active: c.cfg.Border.Active, Inactive: c.cfg.Border.Inactive}, Windows: make([]ports.SceneWindow, 0, len(layout)+len(c.popupOrder)+1), Layers: shownLayers(sc)}
	23	+	scene = ports.Scene{Security: c.security, Output: sc.name(), OutputWidth: o.W, OutputHeight: o.H, WorkspaceClip: clip, Scale: sc.scale, Transform: sc.transform, Off: sc.off, Background: c.cfg.Background.Color, Border: ports.Border{Radius: c.cfg.Border.Radius, Width: c.cfg.Border.Width, Active: c.cfg.Border.Active, Inactive: c.cfg.Border.Inactive}, Windows: make([]ports.SceneWindow, 0, len(layout)+len(c.popupOrder)+len(c.unmanagedOrder)+1), Layers: shownLayers(sc)}
24	24		if !sc.mon.previewing() {
25	25		// Tiles stop at the panels; the overview lays out previews over
26	26		// the whole output.

@@ -116,8 +116,19 @@ func (c Core) sceneFor(ctx context.Context, i int, sc screen, only *screen, ca
116	116		}
117	117		c.configures.mark(v)
118	118		}
	119	+	if !p.Hidden && p.Preview == 0 && c.windows.lookup(p.ID).client.Positioned {
	120	+	cr := c.clientRect(ps)
	121	+	at := Rect{X: sc.x + cr.X, Y: sc.y + cr.Y}
	122	+	if old, ok := c.placed[p.ID]; !ok \|\| old != at {
	123	+	if err := c.command(ctx, ports.PlaceWindow{ID: p.ID, X: at.X, Y: at.Y}); err != nil {
	124	+	return ports.Scene{}, err
	125	+	}
	126	+	c.placed[p.ID] = at
	127	+	}
	128	+	}
119	129		}
120	130		scene.Windows = append(scene.Windows, c.scenePopups(sc)...)
	131	+	scene.Windows = c.sceneUnmanaged(scene.Windows, sc)
121	132		if icon, ok := c.dataDragIconOn(i, sc); ok {
122	133		// The drag icon is over everything, popups and layers included.
123	134		scene.Windows = append(scene.Windows, icon)

M internal/core/transition.go +1 -0


@@ -453,6 +453,7 @@ func (c *Core) unmapWindow(v ports.WindowUnmapped) {
453	453		// The window is unmapped: a toplevel that maps again keeps its ID and
454	454		// must be configured from nothing (a leaving entry keeps no configure).
455	455		c.configures.forget(v.ID)
	456	+	delete(c.placed, v.ID)
456	457		sc, w := c.screenOf(v.ID)
457	458		if sc == nil {
458	459		return

A internal/core/unmanaged.go +117 -0

@@ -0,0 +1,117 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"context"
	5	+	"slices"
	6	+
	7	+	"github.com/bnema/neferwl/internal/ports"
	8	+	)
	9	+
	10	+	// unmanagedState is a mapped override-redirect X11 window: an absolute layout
	11	+	// rect chosen by the client, no parent, never keyboard-focused. rect is in
	12	+	// global logical coordinates.
	13	+	type unmanagedState struct {
	14	+	id WindowID
	15	+	rect Rect
	16	+	noInput bool
	17	+	}
	18	+
	19	+	// unmanagedEvent applies an unmanaged window event. changed is true when the
	20	+	// scene or the pointer target may differ.
	21	+	func (c *Core) unmanagedEvent(ctx context.Context, ev ports.ClientEvent) (changed bool, err error) {
	22	+	switch v := ev.(type) {
	23	+	case ports.UnmanagedMapped:
	24	+	r := Rect{X: v.X, Y: v.Y, W: v.Width, H: v.Height}
	25	+	if u := c.unmanaged[v.ID]; u != nil {
	26	+	if u.rect == r && u.noInput == v.NoInput {
	27	+	return false, nil
	28	+	}
	29	+	u.rect, u.noInput = r, v.NoInput
	30	+	} else {
	31	+	c.unmanaged[v.ID] = &unmanagedState{id: v.ID, rect: r, noInput: v.NoInput}
	32	+	c.unmanagedOrder = append(c.unmanagedOrder, v.ID)
	33	+	}
	34	+	case ports.UnmanagedMoved:
	35	+	u := c.unmanaged[v.ID]
	36	+	r := Rect{X: v.X, Y: v.Y, W: v.Width, H: v.Height}
	37	+	if u == nil \|\| u.rect == r {
	38	+	return false, nil
	39	+	}
	40	+	u.rect = r
	41	+	case ports.UnmanagedUnmapped:
	42	+	if c.unmanaged[v.ID] == nil {
	43	+	return false, nil
	44	+	}
	45	+	delete(c.unmanaged, v.ID)
	46	+	c.unmanagedOrder = slices.DeleteFunc(c.unmanagedOrder, func(id WindowID) bool { return id == v.ID })
	47	+	c.windows.drop(v.ID)
	48	+	if err := c.dataDragGone(ctx, v.ID); err != nil {
	49	+	return false, err
	50	+	}
	51	+	// rehit does nothing while a button grab or drag is held: do not
	52	+	// leave the pointer and grab on the dead window.
	53	+	if c.grab == v.ID {
	54	+	c.grab = 0
	55	+	}
	56	+	if c.pointer == v.ID {
	57	+	c.pointer = 0
	58	+	if err := c.pointerFocus(ctx, ports.PointerFocus{}); err != nil {
	59	+	return false, err
	60	+	}
	61	+	}
	62	+	}
	63	+	// The window under a still pointer may have changed.
	64	+	return true, c.rehit(ctx)
	65	+	}
	66	+
	67	+	// unmanagedScreen is the screen showing u: the one containing its origin, or
	68	+	// the one the pointer clamp would pick when the origin is in a hole.
	69	+	func (c Core) unmanagedScreen(u unmanagedState) *screen {
	70	+	x, y := float64(u.rect.X), float64(u.rect.Y)
	71	+	i := c.screenAt(x, y)
	72	+	if i < 0 {
	73	+	cx, cy := c.clampPointer(x, y, x, y)
	74	+	i = c.screenAt(cx, cy)
	75	+	}
	76	+	if i < 0 {
	77	+	return nil
	78	+	}
	79	+	return c.screens[i]
	80	+	}
	81	+
	82	+	// sceneUnmanaged appends the unmanaged windows shown on sc, bottom to top,
	83	+	// drawn as popups over the layers. They are hidden while sc previews.
	84	+	func (c Core) sceneUnmanaged(out []ports.SceneWindow, sc screen) []ports.SceneWindow {
	85	+	if len(c.unmanagedOrder) == 0 \|\| sc.mon.previewing() {
	86	+	return out
	87	+	}
	88	+	for _, id := range c.unmanagedOrder {
	89	+	u := c.unmanaged[id]
	90	+	if u == nil \|\| c.unmanagedScreen(u) != sc {
	91	+	continue
	92	+	}
	93	+	r := u.rect
	94	+	r.X, r.Y = r.X-sc.x, r.Y-sc.y
	95	+	out = append(out, ports.SceneWindow{ID: id, Rect: r, Popup: true, OverLayers: true})
	96	+	}
	97	+	return out
	98	+	}
	99	+
	100	+	// unmanagedAt is the topmost unmanaged window taking the pointer at the
	101	+	// screen-local point. None while the pointer is locked or the screen previews.
	102	+	func (c Core) unmanagedAt(sc screen, lx, ly float64) (WindowID, float64, float64) {
	103	+	if len(c.unmanagedOrder) == 0 \|\| c.constraint.Mode == ports.ConstraintLock \|\| sc.mon.previewing() {
	104	+	return 0, 0, 0
	105	+	}
	106	+	for i := len(c.unmanagedOrder) - 1; i >= 0; i-- {
	107	+	u := c.unmanaged[c.unmanagedOrder[i]]
	108	+	if u == nil \|\| u.noInput \|\| c.unmanagedScreen(u) != sc {
	109	+	continue
	110	+	}
	111	+	x, y := lx-float64(u.rect.X-sc.x), ly-float64(u.rect.Y-sc.y)
	112	+	if x >= 0 && x < float64(u.rect.W) && y >= 0 && y < float64(u.rect.H) && c.acceptsInput(u.id, x, y) {
	113	+	return u.id, x, y
	114	+	}
	115	+	}
	116	+	return 0, 0, 0
	117	+	}

A internal/core/unmanaged_test.go +145 -0

@@ -0,0 +1,145 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"context"
	5	+	"testing"
	6	+
	7	+	"github.com/bnema/neferwl/internal/ports"
	8	+	)
	9	+
	10	+	func unmanagedScene(t testing.T, c Core, i int) ports.Scene {
	11	+	t.Helper()
	12	+	s, err := c.sceneFor(context.Background(), i, c.screens[i], nil, nil)
	13	+	if err != nil {
	14	+	t.Fatal(err)
	15	+	}
	16	+	return s
	17	+	}
	18	+
	19	+	func mapUnmanaged(t testing.T, c Core, id WindowID, x, y, w, h int, noInput bool) {
	20	+	t.Helper()
	21	+	c.clientEvent(context.Background(), ports.UnmanagedMapped{ID: id, X: x, Y: y, Width: w, Height: h, NoInput: noInput})
	22	+	}
	23	+
	24	+	func TestUnmanagedScene(t *testing.T) {
	25	+	c := publishRig(t, 2)
	26	+	mapUnmanaged(t, c, 100, 310, 20, 50, 40, false)
	27	+	mapUnmanaged(t, c, 101, 5, 5, 10, 10, true)
	28	+	b := unmanagedScene(t, c, 1)
	29	+	last := b.Windows[len(b.Windows)-1]
	30	+	if last.ID != 100 \|\| last.Rect != (Rect{X: 10, Y: 20, W: 50, H: 40}) \|\| !last.Popup \|\| !last.OverLayers {
	31	+	t.Fatalf("screen B top window %+v", last)
	32	+	}
	33	+	a := unmanagedScene(t, c, 0)
	34	+	if got := a.Windows[len(a.Windows)-1]; got.ID != 101 \|\| got.Rect.X != 5 {
	35	+	t.Fatalf("screen A top window %+v", got)
	36	+	}
	37	+	c.clientEvent(context.Background(), ports.UnmanagedMoved{ID: 100, X: 20, Y: 20, Width: 50, Height: 40})
	38	+	if got := unmanagedScene(t, c, 0).Windows; got[len(got)-2].ID != 100 \|\| got[len(got)-2].Rect.X != 20 {
	39	+	t.Fatalf("moved window not on screen A: %+v", got)
	40	+	}
	41	+	c.clientEvent(context.Background(), ports.UnmanagedUnmapped{ID: 100})
	42	+	c.clientEvent(context.Background(), ports.UnmanagedUnmapped{ID: 101})
	43	+	if len(c.unmanagedOrder) != 0 \|\| len(c.unmanaged) != 0 {
	44	+	t.Fatal("state left after unmap")
	45	+	}
	46	+	}
	47	+
	48	+	func TestUnmanagedHiddenWhilePreviewing(t *testing.T) {
	49	+	c := publishRig(t, 1)
	50	+	mapUnmanaged(t, c, 100, 10, 10, 50, 40, false)
	51	+	c.cur().mon.ov.open = true
	52	+	if !c.cur().mon.previewing() {
	53	+	t.Fatal("setup: not previewing")
	54	+	}
	55	+	for _, w := range unmanagedScene(t, c, 0).Windows {
	56	+	if w.ID == 100 {
	57	+	t.Fatal("unmanaged window drawn in the overview")
	58	+	}
	59	+	}
	60	+	if id, _, _ := c.hit(20, 20); id == 100 {
	61	+	t.Fatal("unmanaged window hit in the overview")
	62	+	}
	63	+	}
	64	+
	65	+	func TestUnmanagedHit(t *testing.T) {
	66	+	c := publishRig(t, 2)
	67	+	mapUnmanaged(t, c, 100, 310, 20, 50, 40, false)
	68	+	mapUnmanaged(t, c, 101, 320, 30, 10, 10, false)
	69	+	mapUnmanaged(t, c, 102, 340, 30, 10, 10, true)
	70	+	if id, x, y := c.hit(325, 35); id != 101 \|\| x != 5 \|\| y != 5 {
	71	+	t.Fatalf("topmost: %d %v %v", id, x, y)
	72	+	}
	73	+	if id, _, _ := c.hit(345, 35); id != 100 {
	74	+	t.Fatalf("noInput must be skipped: %d", id)
	75	+	}
	76	+	c.windows.setRegion(ports.InputRegionChanged{ID: 100, Rects: []Rect{{X: 0, Y: 0, W: 5, H: 5}}})
	77	+	if id, _, _ := c.hit(345, 35); id == 100 {
	78	+	t.Fatal("outside the input region")
	79	+	}
	80	+	c.constraint.Mode = ports.ConstraintLock
	81	+	if id, _, _ := c.hit(325, 35); id == 101 {
	82	+	t.Fatal("locked pointer must not move to an unmanaged window")
	83	+	}
	84	+	c.constraint.Mode = 0
	85	+	c.security.Protected = true
	86	+	if id, _, _ := c.hit(325, 35); id == 101 {
	87	+	t.Fatal("protected session hit an unmanaged window")
	88	+	}
	89	+	}
	90	+
	91	+	func unmanagedRig(t testing.TB, n int) *Core {
	92	+	c := publishRig(t, 1)
	93	+	for i := range n {
	94	+	c.clientEvent(context.Background(), ports.UnmanagedMapped{ID: WindowID(100 + i), X: 10 * i, Y: 10, Width: 30, Height: 30})
	95	+	}
	96	+	return c
	97	+	}
	98	+
	99	+	func publishOnce(t testing.TB, c *Core) {
	100	+	if err := c.publish(context.Background()); err != nil {
	101	+	t.Fatal(err)
	102	+	}
	103	+	<-c.ch.Scenes
	104	+	}
	105	+
	106	+	// TestUnmanagedPublishAllocations: three unmanaged windows cost no more than
	107	+	// none (the scene window slice is presized for them).
	108	+	func TestUnmanagedPublishAllocations(t *testing.T) {
	109	+	base, with := unmanagedRig(t, 0), unmanagedRig(t, 3)
	110	+	publishOnce(t, base)
	111	+	publishOnce(t, with)
	112	+	a := testing.AllocsPerRun(50, func() { publishOnce(t, base) })
	113	+	b := testing.AllocsPerRun(50, func() { publishOnce(t, with) })
	114	+	if b > a {
	115	+	t.Fatalf("publish allocs with unmanaged = %v, without = %v", b, a)
	116	+	}
	117	+	}
	118	+
	119	+	func TestUnmanagedHitAllocations(t *testing.T) {
	120	+	c := unmanagedRig(t, 3)
	121	+	if n := testing.AllocsPerRun(100, func() { c.hit(25, 20); c.hit(250, 150) }); n != 0 {
	122	+	t.Fatalf("hit allocs = %v", n)
	123	+	}
	124	+	}
	125	+
	126	+	func TestUnmanagedUnmapDuringGrabClearsPointer(t *testing.T) {
	127	+	c := publishRig(t, 1)
	128	+	mapUnmanaged(t, c, 100, 10, 10, 50, 40, false)
	129	+	cmds := make(chan ports.ClientCommand, 64)
	130	+	c.ch.Commands = cmds
	131	+	c.pointer, c.grab = 100, 100
	132	+	c.clientEvent(context.Background(), ports.UnmanagedUnmapped{ID: 100})
	133	+	if c.pointer == 100 \|\| c.grab != 0 {
	134	+	t.Fatalf("pointer %d grab %d left on the dead window", c.pointer, c.grab)
	135	+	}
	136	+	var focus bool
	137	+	for len(cmds) > 0 {
	138	+	if f, ok := (<-cmds).(ports.PointerFocus); ok && f == (ports.PointerFocus{}) {
	139	+	focus = true
	140	+	}
	141	+	}
	142	+	if !focus {
	143	+	t.Fatal("pointer focus not reset")
	144	+	}
	145	+	}

M internal/ports/client_commands.go +10 -0


@@ -47,6 +47,16 @@ type ConfigureWindow struct {
47	47
48	48		func (ConfigureWindow) clientCommand() {}
49	49
	50	+	// PlaceWindow carries core → wayland the position of a Positioned window's
	51	+	// client rect, in layout logical coordinates (output origin included). It
	52	+	// follows the ConfigureWindow of a frame and is sent once per change.
	53	+	type PlaceWindow struct {
	54	+	ID WindowID
	55	+	X, Y int
	56	+	}
	57	+
	58	+	func (PlaceWindow) clientCommand() {}
	59	+
50	60		// OutputPlacement is one output in the global layout. X, Y, Width and
51	61		// Height are logical (after Transform: they swap for 90/270);
52	62		// physical = logical × Scale. Info.Width and Info.Height are the physical

M internal/ports/client_events.go +28 -0


@@ -20,6 +20,9 @@ type WindowMapped struct {
20	20		// xdg-foreign), 0 when none. A dialog of a fullscreen window shows over
21	21		// it.
22	22		Parent WindowID
	23	+	// Positioned windows are placed by core: it sends PlaceWindow with the
	24	+	// client rect origin. Set only by the X11 host, false for xdg.
	25	+	Positioned bool
23	26		// Remap is set when the toplevel mapped before and was unmapped (a tray
24	27		// app restored): window rules only place its first map.
25	28		Remap bool

@@ -49,6 +52,31 @@ type WindowUnmapped struct{ ID WindowID }
49	52
50	53		func (WindowUnmapped) clientEvent() {}
51	54
	55	+	// UnmanagedMapped carries wayland → core that an override-redirect X11 window
	56	+	// shows. The rect is its place in the layout (logical coordinates). NoInput
	57	+	// windows (tooltips, drag icons, notifications) never take the pointer.
	58	+	type UnmanagedMapped struct {
	59	+	ID WindowID
	60	+	X, Y, Width, Height int
	61	+	NoInput bool
	62	+	}
	63	+
	64	+	func (UnmanagedMapped) clientEvent() {}
	65	+
	66	+	// UnmanagedMoved carries wayland → core a move and/or resize of a mapped
	67	+	// unmanaged window.
	68	+	type UnmanagedMoved struct {
	69	+	ID WindowID
	70	+	X, Y, Width, Height int
	71	+	}
	72	+
	73	+	func (UnmanagedMoved) clientEvent() {}
	74	+
	75	+	// UnmanagedUnmapped carries wayland → core that an unmanaged window is gone.
	76	+	type UnmanagedUnmapped struct{ ID WindowID }
	77	+
	78	+	func (UnmanagedUnmapped) clientEvent() {}
	79	+
52	80		// ShortcutsInhibit carries wayland → core that a window asks for (Active)
53	81		// or stops asking for all keys, compositor binds included, while it has
54	82		// keyboard focus (zwp_keyboard_shortcuts_inhibit_v1).

M internal/ports/config.go +17 -3


@@ -101,9 +101,8 @@ type Config struct {
101	101		Command []string
102	102		AutoOpen string
103	103		}
104		-	// Xwayland is the xwayland-satellite binary serving X11 clients; empty
105		-	// disables X11.
106		-	Xwayland string
	104	+	// Xwayland selects the X11 launcher.
	105	+	Xwayland XwaylandConfig
107	106		// Startup are commands run once when the session starts, in order.
108	107		// One startup line may hold several, split by SplitCommands.
109	108		Startup [][]string

@@ -298,3 +297,18 @@ type WindowRule struct {
298	297		// (1 to 16; 0 leaves it automatic).
299	298		Cells int
300	299		}
	300	+
	301	+	// XwaylandBackend selects how X11 clients are served.
	302	+	type XwaylandBackend uint8
	303	+
	304	+	const (
	305	+	XwaylandOff XwaylandBackend = iota
	306	+	XwaylandSatellite
	307	+	XwaylandBuiltin
	308	+	)
	309	+
	310	+	// XwaylandConfig selects the launcher and its executable.
	311	+	type XwaylandConfig struct {
	312	+	Backend XwaylandBackend
	313	+	Binary string
	314	+	}