feat(shell): add xdg_popup support and floating dialogs

commit: 6bc6748207b53e91388c78456581c31ac5c0a2a1
author: brice · 27d ago · 2026-09-25 14:03 UTC
parent: 0679a6a
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

15 files · +1094 -64

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


@@ -506,6 +506,12 @@ func (r *Renderer) Render(s ports.Scene, contents map[ports.WindowID]ports.Surfa
506	506		continue
507	507		}
508	508		x, y := w.Rect.X, w.Rect.Y
	509	+	if w.Popup {
	510	+	// Menus draw only what the client drew, shadows clipped.
	511	+	content := contents[w.ID]
	512	+	place(&content, x, y, w.Rect.W, w.Rect.H)
	513	+	continue
	514	+	}
509	515		// Content sits inside the border; core sized the client to match.
510	516		b := 0
511	517		if !w.Fullscreen && !w.Borderless {


@@ -506,6 +506,12 @@ func (r *Renderer) Render(s ports.Scene, contents map[ports.WindowID]ports.Surfa
506	continue	506		continue
507	}	507		}
508	x, y := w.Rect.X, w.Rect.Y	508		x, y := w.Rect.X, w.Rect.Y
		509	+	if w.Popup {
		510	+	// Menus draw only what the client drew, shadows clipped.
		511	+	content := contents[w.ID]
		512	+	place(&content, x, y, w.Rect.W, w.Rect.H)
		513	+	continue
		514	+	}
509	// Content sits inside the border; core sized the client to match.	515		// Content sits inside the border; core sized the client to match.
510	b := 0	516		b := 0
511	if !w.Fullscreen && !w.Borderless {	517		if !w.Fullscreen && !w.Borderless {

A internal/adapters/wayland/popup.go +140 -0

@@ -0,0 +1,140 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"github.com/bnema/nefertty/internal/ports"
	5	+	"github.com/bnema/purego-libwayland/protocol/wayland"
	6	+	"github.com/bnema/purego-libwayland/protocol/xdgshell"
	7	+	)
	8	+
	9	+	// popup is the xdg_popup role of a window. Core places it (PopupRequest →
	10	+	// ConfigurePopup); it maps on the first buffer after its configure is
	11	+	// acked, and is drawn over its parent like a window without border.
	12	+	type popup struct {
	13	+	w *window
	14	+	resource *xdgshell.Popup
	15	+	parent *window
	16	+	pos ports.Positioner
	17	+	grab bool
	18	+	// sent is set once core got the PopupRequest; done once dismissed.
	19	+	sent, done bool
	20	+	}
	21	+
	22	+	func (s Server) newPopup(x xdgSurface, r xdgshell.Surface, id uint32, parentXDG xdgshell.Surface, pos *xdgshell.Positioner) {
	23	+	p, ok := s.positionerOf(x.wm, pos)
	24	+	if !ok {
	25	+	return
	26	+	}
	27	+	var parent *window
	28	+	if parentXDG != nil {
	29	+	for _, w := range s.windows {
	30	+	if w.xdg.resource != nil && w.xdg.resource.Resource == parentXDG.Resource {
	31	+	parent = w
	32	+	}
	33	+	}
	34	+	}
	35	+	w := &window{id: s.nextWindow, xdg: x}
	36	+	pp := &popup{w: w, parent: parent, pos: p}
	37	+	res, err := xdgshell.NewPopup(r.Client(), r.Version(), id, pp)
	38	+	if err != nil {
	39	+	return
	40	+	}
	41	+	pp.resource, w.popup = res, pp
	42	+	s.nextWindow++
	43	+	s.windows[w.id] = w
	44	+	x.window = w
	45	+	// Without a parent (xdg-shell lets clients set it through another
	46	+	// protocol, such as layer-shell) the popup has nowhere to go.
	47	+	if parent == nil {
	48	+	pp.dismiss()
	49	+	}
	50	+	x.surface.role = func(buffer bool) {
	51	+	if x.surface.destroyed {
	52	+	w.unmap()
	53	+	return
	54	+	}
	55	+	switch {
	56	+	case !buffer && !w.mapped && !x.configured && !pp.done:
	57	+	if !pp.sent {
	58	+	pp.sent = true
	59	+	s.emit(ports.PopupRequest{ID: w.id, Parent: parent.id, Positioner: pp.pos, Grab: pp.grab})
	60	+	}
	61	+	case buffer && !w.mapped && x.acked && !pp.done:
	62	+	w.mapped = true
	63	+	s.emit(ports.PopupMapped{ID: w.id})
	64	+	s.log.Debug().Uint64("id", uint64(w.id)).Uint64("parent", uint64(parent.id)).Msg("popup mapped")
	65	+	case !buffer && w.mapped:
	66	+	w.unmap()
	67	+	}
	68	+	}
	69	+	res.OnDestroy = func() {
	70	+	// Core forgets the popup, placed or mapped.
	71	+	if !w.mapped && pp.sent {
	72	+	s.emit(ports.WindowUnmapped{ID: w.id})
	73	+	}
	74	+	w.unmap()
	75	+	pp.done = true
	76	+	x.surface.current, x.surface.pending = nil, nil
	77	+	x.surface.attached = false
	78	+	delete(s.windows, w.id)
	79	+	x.window = nil
	80	+	x.surface.role = nil
	81	+	x.configured, x.acked, x.serials = false, false, nil
	82	+	x.geometry, x.pendingGeometry = ports.Rect{}, ports.Rect{}
	83	+	}
	84	+	}
	85	+
	86	+	func (popup) Destroy(xdgshell.Popup) {}
	87	+
	88	+	// Grab is only valid before the first commit; core then gives the popup the
	89	+	// keyboard and closes it on a click outside its popup chain.
	90	+	func (p popup) Grab(r xdgshell.Popup, _ *wayland.Seat, _ uint32) {
	91	+	if p.sent \|\| p.w.mapped {
	92	+	r.PostError(uint32(xdgshell.PopupErrorInvalidGrab), "grab after the popup was committed")
	93	+	return
	94	+	}
	95	+	p.grab = true
	96	+	}
	97	+
	98	+	func (p popup) Reposition(r xdgshell.Popup, pos *xdgshell.Positioner, token uint32) {
	99	+	s := p.w.xdg.server
	100	+	next, ok := s.positionerOf(p.w.xdg.wm, pos)
	101	+	if !ok \|\| p.done {
	102	+	return
	103	+	}
	104	+	p.pos = next
	105	+	if p.sent {
	106	+	s.emit(ports.PopupRequest{ID: p.w.id, Parent: p.parent.id, Positioner: next, Grab: p.grab, Reposition: true, Token: token})
	107	+	}
	108	+	}
	109	+
	110	+	// configure sends core's placement: xdg_popup.configure then
	111	+	// xdg_surface.configure.
	112	+	func (p *popup) configure(c ports.ConfigurePopup) {
	113	+	if p.done \|\| !p.resource.Resource.Alive() \|\| !p.w.xdg.resource.Resource.Alive() {
	114	+	return
	115	+	}
	116	+	if c.Reposition && p.resource.Version() >= 3 {
	117	+	p.resource.SendRepositioned(c.Token)
	118	+	}
	119	+	p.resource.SendConfigure(int32(c.Rect.X), int32(c.Rect.Y), int32(c.Rect.W), int32(c.Rect.H))
	120	+	s := p.w.xdg.server
	121	+	s.serial++
	122	+	p.w.xdg.resource.SendConfigure(s.serial)
	123	+	p.w.xdg.serials = append(p.w.xdg.serials, s.serial)
	124	+	p.w.xdg.configured = true
	125	+	if surf := p.w.xdg.surface; surf != nil {
	126	+	surf.sendTreeScale()
	127	+	}
	128	+	}
	129	+
	130	+	// dismiss sends popup_done once; the client then destroys the popup.
	131	+	func (p *popup) dismiss() {
	132	+	if p.done {
	133	+	return
	134	+	}
	135	+	p.done = true
	136	+	if p.resource.Resource.Alive() {
	137	+	p.resource.SendPopupDone()
	138	+	}
	139	+	p.w.unmap()
	140	+	}

@@ -0,0 +1,140 @@
	1	+	package wayland
	2	+
	3	+	import (
	4	+	"github.com/bnema/nefertty/internal/ports"
	5	+	"github.com/bnema/purego-libwayland/protocol/wayland"
	6	+	"github.com/bnema/purego-libwayland/protocol/xdgshell"
	7	+	)
	8	+
	9	+	// popup is the xdg_popup role of a window. Core places it (PopupRequest →
	10	+	// ConfigurePopup); it maps on the first buffer after its configure is
	11	+	// acked, and is drawn over its parent like a window without border.
	12	+	type popup struct {
	13	+	w *window
	14	+	resource *xdgshell.Popup
	15	+	parent *window
	16	+	pos ports.Positioner
	17	+	grab bool
	18	+	// sent is set once core got the PopupRequest; done once dismissed.
	19	+	sent, done bool
	20	+	}
	21	+
	22	+	func (s Server) newPopup(x xdgSurface, r xdgshell.Surface, id uint32, parentXDG xdgshell.Surface, pos *xdgshell.Positioner) {
	23	+	p, ok := s.positionerOf(x.wm, pos)
	24	+	if !ok {
	25	+	return
	26	+	}
	27	+	var parent *window
	28	+	if parentXDG != nil {
	29	+	for _, w := range s.windows {
	30	+	if w.xdg.resource != nil && w.xdg.resource.Resource == parentXDG.Resource {
	31	+	parent = w
	32	+	}
	33	+	}
	34	+	}
	35	+	w := &window{id: s.nextWindow, xdg: x}
	36	+	pp := &popup{w: w, parent: parent, pos: p}
	37	+	res, err := xdgshell.NewPopup(r.Client(), r.Version(), id, pp)
	38	+	if err != nil {
	39	+	return
	40	+	}
	41	+	pp.resource, w.popup = res, pp
	42	+	s.nextWindow++
	43	+	s.windows[w.id] = w
	44	+	x.window = w
	45	+	// Without a parent (xdg-shell lets clients set it through another
	46	+	// protocol, such as layer-shell) the popup has nowhere to go.
	47	+	if parent == nil {
	48	+	pp.dismiss()
	49	+	}
	50	+	x.surface.role = func(buffer bool) {
	51	+	if x.surface.destroyed {
	52	+	w.unmap()
	53	+	return
	54	+	}
	55	+	switch {
	56	+	case !buffer && !w.mapped && !x.configured && !pp.done:
	57	+	if !pp.sent {
	58	+	pp.sent = true
	59	+	s.emit(ports.PopupRequest{ID: w.id, Parent: parent.id, Positioner: pp.pos, Grab: pp.grab})
	60	+	}
	61	+	case buffer && !w.mapped && x.acked && !pp.done:
	62	+	w.mapped = true
	63	+	s.emit(ports.PopupMapped{ID: w.id})
	64	+	s.log.Debug().Uint64("id", uint64(w.id)).Uint64("parent", uint64(parent.id)).Msg("popup mapped")
	65	+	case !buffer && w.mapped:
	66	+	w.unmap()
	67	+	}
	68	+	}
	69	+	res.OnDestroy = func() {
	70	+	// Core forgets the popup, placed or mapped.
	71	+	if !w.mapped && pp.sent {
	72	+	s.emit(ports.WindowUnmapped{ID: w.id})
	73	+	}
	74	+	w.unmap()
	75	+	pp.done = true
	76	+	x.surface.current, x.surface.pending = nil, nil
	77	+	x.surface.attached = false
	78	+	delete(s.windows, w.id)
	79	+	x.window = nil
	80	+	x.surface.role = nil
	81	+	x.configured, x.acked, x.serials = false, false, nil
	82	+	x.geometry, x.pendingGeometry = ports.Rect{}, ports.Rect{}
	83	+	}
	84	+	}
	85	+
	86	+	func (popup) Destroy(xdgshell.Popup) {}
	87	+
	88	+	// Grab is only valid before the first commit; core then gives the popup the
	89	+	// keyboard and closes it on a click outside its popup chain.
	90	+	func (p popup) Grab(r xdgshell.Popup, _ *wayland.Seat, _ uint32) {
	91	+	if p.sent \|\| p.w.mapped {
	92	+	r.PostError(uint32(xdgshell.PopupErrorInvalidGrab), "grab after the popup was committed")
	93	+	return
	94	+	}
	95	+	p.grab = true
	96	+	}
	97	+
	98	+	func (p popup) Reposition(r xdgshell.Popup, pos *xdgshell.Positioner, token uint32) {
	99	+	s := p.w.xdg.server
	100	+	next, ok := s.positionerOf(p.w.xdg.wm, pos)
	101	+	if !ok \|\| p.done {
	102	+	return
	103	+	}
	104	+	p.pos = next
	105	+	if p.sent {
	106	+	s.emit(ports.PopupRequest{ID: p.w.id, Parent: p.parent.id, Positioner: next, Grab: p.grab, Reposition: true, Token: token})
	107	+	}
	108	+	}
	109	+
	110	+	// configure sends core's placement: xdg_popup.configure then
	111	+	// xdg_surface.configure.
	112	+	func (p *popup) configure(c ports.ConfigurePopup) {
	113	+	if p.done \|\| !p.resource.Resource.Alive() \|\| !p.w.xdg.resource.Resource.Alive() {
	114	+	return
	115	+	}
	116	+	if c.Reposition && p.resource.Version() >= 3 {
	117	+	p.resource.SendRepositioned(c.Token)
	118	+	}
	119	+	p.resource.SendConfigure(int32(c.Rect.X), int32(c.Rect.Y), int32(c.Rect.W), int32(c.Rect.H))
	120	+	s := p.w.xdg.server
	121	+	s.serial++
	122	+	p.w.xdg.resource.SendConfigure(s.serial)
	123	+	p.w.xdg.serials = append(p.w.xdg.serials, s.serial)
	124	+	p.w.xdg.configured = true
	125	+	if surf := p.w.xdg.surface; surf != nil {
	126	+	surf.sendTreeScale()
	127	+	}
	128	+	}
	129	+
	130	+	// dismiss sends popup_done once; the client then destroys the popup.
	131	+	func (p *popup) dismiss() {
	132	+	if p.done {
	133	+	return
	134	+	}
	135	+	p.done = true
	136	+	if p.resource.Resource.Alive() {
	137	+	p.resource.SendPopupDone()
	138	+	}
	139	+	p.w.unmap()
	140	+	}

M internal/adapters/wayland/protocol_test.go +142 -0


@@ -157,6 +157,8 @@ func TestPopupBlocksSecondRole(t *testing.T) {
157	157		registerProtocol(t, c, surf)
158	158		positioner := c.AllocateID()
159	159		requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
	160	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(10), int32(10))
	161	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetAnchorRect, int32(0), int32(0), int32(1), int32(1))
160	162		if err := c.Roundtrip(); err != nil {
161	163		t.Fatal(err)
162	164		}

@@ -647,3 +649,143 @@ func surfaceMapper(t testing.T, c wlturbo.Display, events <-chan ports.ClientE
647	649		return mapped(t, events, 2*time.Second), surf, xdg
648	650		}
649	651		}
	652	+
	653	+	type popupDoneProxy struct {
	654	+	wlturbo.BaseProxy
	655	+	done chan struct{}
	656	+	}
	657	+
	658	+	func (p popupDoneProxy) Dispatch(e wlturbo.Event) {
	659	+	if e.Opcode == uint16(xdgshell.PopupEventPopupDone) {
	660	+	p.done <- struct{}{}
	661	+	}
	662	+	}
	663	+
	664	+	// xdgWindow maps a 1×1 xdg_surface; role sets its role before the first commit.
	665	+	func xdgWindow(t testing.T, c wlturbo.Display, comp, wm, buffer uint32, role func(xdg uint32)) (surf, xdg uint32, serials chan uint32) {
	666	+	t.Helper()
	667	+	surf, xdg = c.AllocateID(), c.AllocateID()
	668	+	requestProtocol(t, c, comp, wayland.CompositorRequestCreateSurface, surf)
	669	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestGetXdgSurface, xdg, surf)
	670	+	registerProtocol(t, c, surf)
	671	+	serials = make(chan uint32, 4)
	672	+	proxy := &configureProxy{serial: serials}
	673	+	proxy.SetID(xdg)
	674	+	c.Context().Register(proxy)
	675	+	role(xdg)
	676	+	requestProtocol(t, c, surf, wayland.SurfaceRequestCommit)
	677	+	if err := c.Roundtrip(); err != nil {
	678	+	t.Fatal(err)
	679	+	}
	680	+	return surf, xdg, serials
	681	+	}
	682	+
	683	+	func ackAndAttach(t testing.T, c wlturbo.Display, surf, xdg, buffer uint32, serials chan uint32) {
	684	+	t.Helper()
	685	+	deadline := time.Now().Add(2 * time.Second)
	686	+	for len(serials) == 0 && time.Now().Before(deadline) {
	687	+	if err := c.Roundtrip(); err != nil {
	688	+	t.Fatal(err)
	689	+	}
	690	+	time.Sleep(10 * time.Millisecond)
	691	+	}
	692	+	select {
	693	+	case serial := <-serials:
	694	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestAckConfigure, serial)
	695	+	default:
	696	+	t.Fatal("configure timeout")
	697	+	}
	698	+	requestProtocol(t, c, surf, wayland.SurfaceRequestAttach, buffer, int32(0), int32(0))
	699	+	requestProtocol(t, c, surf, wayland.SurfaceRequestCommit)
	700	+	if err := c.Roundtrip(); err != nil {
	701	+	t.Fatal(err)
	702	+	}
	703	+	}
	704	+
	705	+	func TestPopupAndFloatingLifecycle(t *testing.T) {
	706	+	s, events, commands, dir := lifecycleServer(t)
	707	+	c := protocolClient(t, s, dir)
	708	+	comp := bindProtocol(t, c, "wl_compositor")
	709	+	wm := bindProtocol(t, c, "xdg_wm_base")
	710	+	shm := bindProtocol(t, c, "wl_shm")
	711	+	registerProtocol(t, c, shm)
	712	+	fd, err := unix.MemfdCreate("popup-buffer", 0)
	713	+	if err != nil {
	714	+	t.Fatal(err)
	715	+	}
	716	+	defer unix.Close(fd)
	717	+	if err := unix.Ftruncate(fd, 4); err != nil {
	718	+	t.Fatal(err)
	719	+	}
	720	+	pool, buffer := c.AllocateID(), c.AllocateID()
	721	+	registerProtocol(t, c, pool)
	722	+	registerProtocol(t, c, buffer)
	723	+	if err := c.SendRequestWithFDs(shm, uint16(wayland.ShmRequestCreatePool), []int{fd}, pool, int32(4)); err != nil {
	724	+	t.Fatal(err)
	725	+	}
	726	+	requestProtocol(t, c, pool, wayland.ShmPoolRequestCreateBuffer, buffer, int32(0), int32(1), int32(1), int32(4), uint32(0))
	727	+
	728	+	// A fixed-size toplevel (min == max) floats, like a splash screen.
	729	+	surf, xdg, serials := xdgWindow(t, c, comp, wm, buffer, func(xdg uint32) {
	730	+	top := c.AllocateID()
	731	+	registerProtocol(t, c, top)
	732	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestGetToplevel, top)
	733	+	requestProtocol(t, c, top, xdgshell.ToplevelRequestSetMinSize, int32(1), int32(1))
	734	+	requestProtocol(t, c, top, xdgshell.ToplevelRequestSetMaxSize, int32(1), int32(1))
	735	+	})
	736	+	ackAndAttach(t, c, surf, xdg, buffer, serials)
	737	+	top := mapped(t, events, 2*time.Second)
	738	+	if !top.Floating {
	739	+	t.Fatalf("splash not floating: %+v", top)
	740	+	}
	741	+	if ev, ok := waitEvent(t, events, 2*time.Second).(ports.WindowResized); !ok \|\| ev.Width != 1 \|\| ev.Height != 1 {
	742	+	t.Fatalf("splash size %+v", ev)
	743	+	}
	744	+
	745	+	positioner := c.AllocateID()
	746	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
	747	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(1), int32(1))
	748	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetAnchorRect, int32(0), int32(0), int32(1), int32(1))
	749	+	done := make(chan struct{}, 1)
	750	+	psurf, pxdg, pserials := xdgWindow(t, c, comp, wm, buffer, func(pxdg uint32) {
	751	+	popup := c.AllocateID()
	752	+	proxy := &popupDoneProxy{done: done}
	753	+	proxy.SetID(popup)
	754	+	c.Context().Register(proxy)
	755	+	requestProtocol(t, c, pxdg, xdgshell.SurfaceRequestGetPopup, popup, xdg, positioner)
	756	+	})
	757	+	req, ok := waitEvent(t, events, 2*time.Second).(ports.PopupRequest)
	758	+	if !ok \|\| req.Parent != top.ID \|\| req.Positioner.Width != 1 {
	759	+	t.Fatalf("popup request %+v", req)
	760	+	}
	761	+	commands <- ports.ConfigurePopup{ID: req.ID, Rect: ports.Rect{X: 2, Y: 3, W: 1, H: 1}}
	762	+	ackAndAttach(t, c, psurf, pxdg, buffer, pserials)
	763	+	if ev, ok := waitEvent(t, events, 2*time.Second).(ports.PopupMapped); !ok \|\| ev.ID != req.ID {
	764	+	t.Fatalf("popup mapped %+v", ev)
	765	+	}
	766	+	commands <- ports.ClosePopup{ID: req.ID}
	767	+	for deadline := time.Now().Add(2 * time.Second); len(done) == 0; time.Sleep(10 * time.Millisecond) {
	768	+	if time.Now().After(deadline) {
	769	+	t.Fatal("popup_done timeout")
	770	+	}
	771	+	if err := c.Roundtrip(); err != nil {
	772	+	t.Fatal(err)
	773	+	}
	774	+	}
	775	+	}
	776	+
	777	+	func TestPopupIncompletePositioner(t *testing.T) {
	778	+	s, _, _, dir := lifecycleServer(t)
	779	+	c := protocolClient(t, s, dir)
	780	+	comp := bindProtocol(t, c, "wl_compositor")
	781	+	wm := bindProtocol(t, c, "xdg_wm_base")
	782	+	surf, xdg := c.AllocateID(), c.AllocateID()
	783	+	requestProtocol(t, c, comp, wayland.CompositorRequestCreateSurface, surf)
	784	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestGetXdgSurface, xdg, surf)
	785	+	registerProtocol(t, c, xdg)
	786	+	positioner := c.AllocateID()
	787	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
	788	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(10), int32(10))
	789	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestGetPopup, c.AllocateID(), uint32(0), positioner)
	790	+	expectProtocolError(t, c, wm, uint32(xdgshell.WmBaseErrorInvalidPositioner))
	791	+	}


@@ -157,6 +157,8 @@ func TestPopupBlocksSecondRole(t *testing.T) {
157	registerProtocol(t, c, surf)	157		registerProtocol(t, c, surf)
158	positioner := c.AllocateID()	158		positioner := c.AllocateID()
159	requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)	159		requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
		160	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(10), int32(10))
		161	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetAnchorRect, int32(0), int32(0), int32(1), int32(1))
160	if err := c.Roundtrip(); err != nil {	162		if err := c.Roundtrip(); err != nil {
161	t.Fatal(err)	163		t.Fatal(err)
162	}	164		}

@@ -647,3 +649,143 @@ func surfaceMapper(t testing.T, c wlturbo.Display, events <-chan ports.ClientE
647	return mapped(t, events, 2*time.Second), surf, xdg	649		return mapped(t, events, 2*time.Second), surf, xdg
648	}	650		}
649	}	651		}
		652	+
		653	+	type popupDoneProxy struct {
		654	+	wlturbo.BaseProxy
		655	+	done chan struct{}
		656	+	}
		657	+
		658	+	func (p popupDoneProxy) Dispatch(e wlturbo.Event) {
		659	+	if e.Opcode == uint16(xdgshell.PopupEventPopupDone) {
		660	+	p.done <- struct{}{}
		661	+	}
		662	+	}
		663	+
		664	+	// xdgWindow maps a 1×1 xdg_surface; role sets its role before the first commit.
		665	+	func xdgWindow(t testing.T, c wlturbo.Display, comp, wm, buffer uint32, role func(xdg uint32)) (surf, xdg uint32, serials chan uint32) {
		666	+	t.Helper()
		667	+	surf, xdg = c.AllocateID(), c.AllocateID()
		668	+	requestProtocol(t, c, comp, wayland.CompositorRequestCreateSurface, surf)
		669	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestGetXdgSurface, xdg, surf)
		670	+	registerProtocol(t, c, surf)
		671	+	serials = make(chan uint32, 4)
		672	+	proxy := &configureProxy{serial: serials}
		673	+	proxy.SetID(xdg)
		674	+	c.Context().Register(proxy)
		675	+	role(xdg)
		676	+	requestProtocol(t, c, surf, wayland.SurfaceRequestCommit)
		677	+	if err := c.Roundtrip(); err != nil {
		678	+	t.Fatal(err)
		679	+	}
		680	+	return surf, xdg, serials
		681	+	}
		682	+
		683	+	func ackAndAttach(t testing.T, c wlturbo.Display, surf, xdg, buffer uint32, serials chan uint32) {
		684	+	t.Helper()
		685	+	deadline := time.Now().Add(2 * time.Second)
		686	+	for len(serials) == 0 && time.Now().Before(deadline) {
		687	+	if err := c.Roundtrip(); err != nil {
		688	+	t.Fatal(err)
		689	+	}
		690	+	time.Sleep(10 * time.Millisecond)
		691	+	}
		692	+	select {
		693	+	case serial := <-serials:
		694	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestAckConfigure, serial)
		695	+	default:
		696	+	t.Fatal("configure timeout")
		697	+	}
		698	+	requestProtocol(t, c, surf, wayland.SurfaceRequestAttach, buffer, int32(0), int32(0))
		699	+	requestProtocol(t, c, surf, wayland.SurfaceRequestCommit)
		700	+	if err := c.Roundtrip(); err != nil {
		701	+	t.Fatal(err)
		702	+	}
		703	+	}
		704	+
		705	+	func TestPopupAndFloatingLifecycle(t *testing.T) {
		706	+	s, events, commands, dir := lifecycleServer(t)
		707	+	c := protocolClient(t, s, dir)
		708	+	comp := bindProtocol(t, c, "wl_compositor")
		709	+	wm := bindProtocol(t, c, "xdg_wm_base")
		710	+	shm := bindProtocol(t, c, "wl_shm")
		711	+	registerProtocol(t, c, shm)
		712	+	fd, err := unix.MemfdCreate("popup-buffer", 0)
		713	+	if err != nil {
		714	+	t.Fatal(err)
		715	+	}
		716	+	defer unix.Close(fd)
		717	+	if err := unix.Ftruncate(fd, 4); err != nil {
		718	+	t.Fatal(err)
		719	+	}
		720	+	pool, buffer := c.AllocateID(), c.AllocateID()
		721	+	registerProtocol(t, c, pool)
		722	+	registerProtocol(t, c, buffer)
		723	+	if err := c.SendRequestWithFDs(shm, uint16(wayland.ShmRequestCreatePool), []int{fd}, pool, int32(4)); err != nil {
		724	+	t.Fatal(err)
		725	+	}
		726	+	requestProtocol(t, c, pool, wayland.ShmPoolRequestCreateBuffer, buffer, int32(0), int32(1), int32(1), int32(4), uint32(0))
		727	+
		728	+	// A fixed-size toplevel (min == max) floats, like a splash screen.
		729	+	surf, xdg, serials := xdgWindow(t, c, comp, wm, buffer, func(xdg uint32) {
		730	+	top := c.AllocateID()
		731	+	registerProtocol(t, c, top)
		732	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestGetToplevel, top)
		733	+	requestProtocol(t, c, top, xdgshell.ToplevelRequestSetMinSize, int32(1), int32(1))
		734	+	requestProtocol(t, c, top, xdgshell.ToplevelRequestSetMaxSize, int32(1), int32(1))
		735	+	})
		736	+	ackAndAttach(t, c, surf, xdg, buffer, serials)
		737	+	top := mapped(t, events, 2*time.Second)
		738	+	if !top.Floating {
		739	+	t.Fatalf("splash not floating: %+v", top)
		740	+	}
		741	+	if ev, ok := waitEvent(t, events, 2*time.Second).(ports.WindowResized); !ok \|\| ev.Width != 1 \|\| ev.Height != 1 {
		742	+	t.Fatalf("splash size %+v", ev)
		743	+	}
		744	+
		745	+	positioner := c.AllocateID()
		746	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
		747	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(1), int32(1))
		748	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetAnchorRect, int32(0), int32(0), int32(1), int32(1))
		749	+	done := make(chan struct{}, 1)
		750	+	psurf, pxdg, pserials := xdgWindow(t, c, comp, wm, buffer, func(pxdg uint32) {
		751	+	popup := c.AllocateID()
		752	+	proxy := &popupDoneProxy{done: done}
		753	+	proxy.SetID(popup)
		754	+	c.Context().Register(proxy)
		755	+	requestProtocol(t, c, pxdg, xdgshell.SurfaceRequestGetPopup, popup, xdg, positioner)
		756	+	})
		757	+	req, ok := waitEvent(t, events, 2*time.Second).(ports.PopupRequest)
		758	+	if !ok \|\| req.Parent != top.ID \|\| req.Positioner.Width != 1 {
		759	+	t.Fatalf("popup request %+v", req)
		760	+	}
		761	+	commands <- ports.ConfigurePopup{ID: req.ID, Rect: ports.Rect{X: 2, Y: 3, W: 1, H: 1}}
		762	+	ackAndAttach(t, c, psurf, pxdg, buffer, pserials)
		763	+	if ev, ok := waitEvent(t, events, 2*time.Second).(ports.PopupMapped); !ok \|\| ev.ID != req.ID {
		764	+	t.Fatalf("popup mapped %+v", ev)
		765	+	}
		766	+	commands <- ports.ClosePopup{ID: req.ID}
		767	+	for deadline := time.Now().Add(2 * time.Second); len(done) == 0; time.Sleep(10 * time.Millisecond) {
		768	+	if time.Now().After(deadline) {
		769	+	t.Fatal("popup_done timeout")
		770	+	}
		771	+	if err := c.Roundtrip(); err != nil {
		772	+	t.Fatal(err)
		773	+	}
		774	+	}
		775	+	}
		776	+
		777	+	func TestPopupIncompletePositioner(t *testing.T) {
		778	+	s, _, _, dir := lifecycleServer(t)
		779	+	c := protocolClient(t, s, dir)
		780	+	comp := bindProtocol(t, c, "wl_compositor")
		781	+	wm := bindProtocol(t, c, "xdg_wm_base")
		782	+	surf, xdg := c.AllocateID(), c.AllocateID()
		783	+	requestProtocol(t, c, comp, wayland.CompositorRequestCreateSurface, surf)
		784	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestGetXdgSurface, xdg, surf)
		785	+	registerProtocol(t, c, xdg)
		786	+	positioner := c.AllocateID()
		787	+	requestProtocol(t, c, wm, xdgshell.WmBaseRequestCreatePositioner, positioner)
		788	+	requestProtocol(t, c, positioner, xdgshell.PositionerRequestSetSize, int32(10), int32(10))
		789	+	requestProtocol(t, c, xdg, xdgshell.SurfaceRequestGetPopup, c.AllocateID(), uint32(0), positioner)
		790	+	expectProtocolError(t, c, wm, uint32(xdgshell.WmBaseErrorInvalidPositioner))
		791	+	}

M internal/adapters/wayland/scale.go +4 -0


@@ -18,6 +18,10 @@ import (
18	18		func (s Server) outputOfSurface(surf surface) *output {
19	19		// Subsurfaces are on their root's output.
20	20		surf = surf.root()
	21	+	// Popups are on their parent's output.
	22	+	for surf.xdg != nil && surf.xdg.window != nil && surf.xdg.window.popup != nil && surf.xdg.window.popup.parent != nil {
	23	+	surf = surf.xdg.window.popup.parent.xdg.surface.root()
	24	+	}
21	25		name := ""
22	26		switch {
23	27		case surf.xdg != nil && surf.xdg.window != nil:


@@ -18,6 +18,10 @@ import (
18	func (s Server) outputOfSurface(surf surface) *output {	18		func (s Server) outputOfSurface(surf surface) *output {
19	// Subsurfaces are on their root's output.	19		// Subsurfaces are on their root's output.
20	surf = surf.root()	20		surf = surf.root()
		21	+	// Popups are on their parent's output.
		22	+	for surf.xdg != nil && surf.xdg.window != nil && surf.xdg.window.popup != nil && surf.xdg.window.popup.parent != nil {
		23	+	surf = surf.xdg.window.popup.parent.xdg.surface.root()
		24	+	}
21	name := ""	25		name := ""
22	switch {	26		switch {
23	case surf.xdg != nil && surf.xdg.window != nil:	27		case surf.xdg != nil && surf.xdg.window != nil:

M internal/adapters/wayland/server.go +12 -3


@@ -98,6 +98,7 @@ type Server struct {
98	98		relatives map[server.Client][]*relativepointer.ZwpRelativePointerV1
99	99		constraints map[surface]constraint
100	100		constraint *constraint // the active one
	101	+	positioners map[server.Resource]positioner
101	102		}
102	103
103	104		func removeItem[T comparable](list []T, v T) []T {

@@ -131,7 +132,7 @@ func New(opts Options, ch Channels, log zerowrap.Logger) (*Server, error) {
131	132		d.Close()
132	133		return nil, err
133	134		}
134		-	s := &Server{display: d, env: linuxProcEnv{}, name: name, cleanup: cleanup, log: log, channels: ch, surfaces: make(map[server.Resource]surface), buffers: make(map[server.Resource]clientBuffer), windows: make(map[ports.WindowID]window), layers: make(map[ports.WindowID]layerSurface), nextWindow: 1, eventReady: make(chan struct{}, 1), contents: make(map[ports.WindowID]ports.SurfaceContent), contentSeq: make(map[ports.WindowID]uint64), contentReady: make(chan struct{}, 1), cursorReady: make(chan struct{}, 1), dataSources: map[server.Resource]clipSource{}, primarySources: map[server.Resource]clipSource{}, controlSources: map[server.Resource]clipSource{}, contentNotify: make(chan struct{}), keymapFD: -1, keyboards: make(map[server.Client][]wayland.Keyboard), pointers: make(map[server.Client][]wayland.Pointer), regions: map[server.Resource]region{}, relatives: map[server.Client][]relativepointer.ZwpRelativePointerV1{}, constraints: map[surface]constraint{}, repeatRate: opts.RepeatRate, repeatDelay: opts.RepeatDelay}
	135	+	s := &Server{display: d, env: linuxProcEnv{}, name: name, cleanup: cleanup, log: log, channels: ch, surfaces: make(map[server.Resource]surface), buffers: make(map[server.Resource]clientBuffer), windows: make(map[ports.WindowID]window), layers: make(map[ports.WindowID]layerSurface), nextWindow: 1, eventReady: make(chan struct{}, 1), contents: make(map[ports.WindowID]ports.SurfaceContent), contentSeq: make(map[ports.WindowID]uint64), contentReady: make(chan struct{}, 1), cursorReady: make(chan struct{}, 1), dataSources: map[server.Resource]clipSource{}, primarySources: map[server.Resource]clipSource{}, controlSources: map[server.Resource]clipSource{}, contentNotify: make(chan struct{}), keymapFD: -1, keyboards: make(map[server.Client][]wayland.Keyboard), pointers: make(map[server.Client][]wayland.Pointer), regions: map[server.Resource]region{}, relatives: map[server.Client][]relativepointer.ZwpRelativePointerV1{}, constraints: map[surface]constraint{}, positioners: map[server.Resource]positioner{}, repeatRate: opts.RepeatRate, repeatDelay: opts.RepeatDelay}
135	136		s.fractions = map[surface]fractionalscale.WpFractionalScaleV1{}
136	137		if opts.Keymap != "" {
137	138		fd, size, e := keymapFile(opts.Keymap)

@@ -435,9 +436,17 @@ func (s *Server) apply(cmd ports.ClientCommand) {
435	436		s.sendModifiers(k)
436	437		}
437	438		}
	439	+	case ports.ConfigurePopup:
	440	+	if w := s.windows[c.ID]; w != nil && w.popup != nil {
	441	+	w.popup.configure(c)
	442	+	}
	443	+	case ports.ClosePopup:
	444	+	if w := s.windows[c.ID]; w != nil && w.popup != nil {
	445	+	w.popup.dismiss()
	446	+	}
438	447		case ports.ConfigureWindow:
439	448		w := s.windows[c.ID]
440		-	if w == nil \|\| !w.toplevel.Resource.Alive() \|\| !w.xdg.resource.Resource.Alive() {
	449	+	if w == nil \|\| w.toplevel == nil \|\| !w.toplevel.Resource.Alive() \|\| !w.xdg.resource.Resource.Alive() {
441	450		s.log.Debug().Uint64("id", uint64(c.ID)).Msg("configure missing window")
442	451		return
443	452		}

@@ -453,7 +462,7 @@ func (s *Server) apply(cmd ports.ClientCommand) {
453	462		s.slotsPending = c.Pending
454	463		case ports.CloseWindow:
455	464		w := s.windows[c.ID]
456		-	if w == nil \|\| !w.toplevel.Resource.Alive() {
	465	+	if w == nil \|\| w.toplevel == nil \|\| !w.toplevel.Resource.Alive() {
457	466		s.log.Debug().Uint64("id", uint64(c.ID)).Msg("close missing window")
458	467		return
459	468		}

 	relatives   map[server.Client][]*relativepointer.ZwpRelativePointerV1
 	constraints map[*surface]*constraint
 	constraint  *constraint // the active one
+	positioners map[*server.Resource]*positioner
 }
 func removeItem[T comparable](list []T, v T) []T {
 		d.Close()
 		return nil, err
 	}
-	s := &Server{display: d, env: linuxProcEnv{}, name: name, cleanup: cleanup, log: log, channels: ch, surfaces: make(map[*server.Resource]*surface), buffers: make(map[*server.Resource]clientBuffer), windows: make(map[ports.WindowID]*window), layers: make(map[ports.WindowID]*layerSurface), nextWindow: 1, eventReady: make(chan struct{}, 1), contents: make(map[ports.WindowID]ports.SurfaceContent), contentSeq: make(map[ports.WindowID]uint64), contentReady: make(chan struct{}, 1), cursorReady: make(chan struct{}, 1), dataSources: map[*server.Resource]*clipSource{}, primarySources: map[*server.Resource]*clipSource{}, controlSources: map[*server.Resource]*clipSource{}, contentNotify: make(chan struct{}), keymapFD: -1, keyboards: make(map[server.Client][]*wayland.Keyboard), pointers: make(map[server.Client][]*wayland.Pointer), regions: map[*server.Resource]*region{}, relatives: map[server.Client][]*relativepointer.ZwpRelativePointerV1{}, constraints: map[*surface]*constraint{}, repeatRate: opts.RepeatRate, repeatDelay: opts.RepeatDelay}
+	s := &Server{display: d, env: linuxProcEnv{}, name: name, cleanup: cleanup, log: log, channels: ch, surfaces: make(map[*server.Resource]*surface), buffers: make(map[*server.Resource]clientBuffer), windows: make(map[ports.WindowID]*window), layers: make(map[ports.WindowID]*layerSurface), nextWindow: 1, eventReady: make(chan struct{}, 1), contents: make(map[ports.WindowID]ports.SurfaceContent), contentSeq: make(map[ports.WindowID]uint64), contentReady: make(chan struct{}, 1), cursorReady: make(chan struct{}, 1), dataSources: map[*server.Resource]*clipSource{}, primarySources: map[*server.Resource]*clipSource{}, controlSources: map[*server.Resource]*clipSource{}, contentNotify: make(chan struct{}), keymapFD: -1, keyboards: make(map[server.Client][]*wayland.Keyboard), pointers: make(map[server.Client][]*wayland.Pointer), regions: map[*server.Resource]*region{}, relatives: map[server.Client][]*relativepointer.ZwpRelativePointerV1{}, constraints: map[*surface]*constraint{}, positioners: map[*server.Resource]*positioner{}, repeatRate: opts.RepeatRate, repeatDelay: opts.RepeatDelay}
 	s.fractions = map[*surface]*fractionalscale.WpFractionalScaleV1{}
 	if opts.Keymap != "" {
 		fd, size, e := keymapFile(opts.Keymap)
 				s.sendModifiers(k)
 			}
 		}
+	case ports.ConfigurePopup:
+		if w := s.windows[c.ID]; w != nil && w.popup != nil {
+			w.popup.configure(c)
+		}
+	case ports.ClosePopup:
+		if w := s.windows[c.ID]; w != nil && w.popup != nil {
+			w.popup.dismiss()
+		}
 	case ports.ConfigureWindow:
 		w := s.windows[c.ID]
-		if w == nil || !w.toplevel.Resource.Alive() || !w.xdg.resource.Resource.Alive() {
+		if w == nil || w.toplevel == nil || !w.toplevel.Resource.Alive() || !w.xdg.resource.Resource.Alive() {
 			s.log.Debug().Uint64("id", uint64(c.ID)).Msg("configure missing window")
 			return
 		}
 		s.slotsPending = c.Pending
 	case ports.CloseWindow:
 		w := s.windows[c.ID]
-		if w == nil || !w.toplevel.Resource.Alive() {
+		if w == nil || w.toplevel == nil || !w.toplevel.Resource.Alive() {
 			s.log.Debug().Uint64("id", uint64(c.ID)).Msg("close missing window")
 			return
 		}

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


@@ -234,6 +234,9 @@ func (s surface) Commit(wayland.Surface) {
234	234		s.xdg.geometry, geometry = s.xdg.pendingGeometry, true
235	235		}
236	236		s.commitConstraint(geometry)
	237	+	if s.xdg != nil && s.xdg.window != nil {
	238	+	s.xdg.window.afterCommit()
	239	+	}
237	240		if fresh \|\| moved \|\| geometry \|\| s.sub.parent != nil {
238	241		s.redraw()
239	242		}


@@ -234,6 +234,9 @@ func (s surface) Commit(wayland.Surface) {
234	s.xdg.geometry, geometry = s.xdg.pendingGeometry, true	234		s.xdg.geometry, geometry = s.xdg.pendingGeometry, true
235	}	235		}
236	s.commitConstraint(geometry)	236		s.commitConstraint(geometry)
		237	+	if s.xdg != nil && s.xdg.window != nil {
		238	+	s.xdg.window.afterCommit()
		239	+	}
237	if fresh \|\| moved \|\| geometry \|\| s.sub.parent != nil {	240		if fresh \|\| moved \|\| geometry \|\| s.sub.parent != nil {
238	s.redraw()	241		s.redraw()
239	}	242		}

M internal/adapters/wayland/xdg.go +139 -38


@@ -16,8 +16,12 @@ type wm struct{ server *Server }
16	16
17	17		func (wm) Destroy(*xdgshell.WmBase) {}
18	18		func (wm) Pong(*xdgshell.WmBase, uint32) {}
19		-	func (wm) CreatePositioner(r *xdgshell.WmBase, id uint32) {
20		-	xdgshell.NewPositioner(r.Client(), r.Version(), id, positioner{})
	19	+	func (m wm) CreatePositioner(r *xdgshell.WmBase, id uint32) {
	20	+	p := &positioner{}
	21	+	if res, err := xdgshell.NewPositioner(r.Client(), r.Version(), id, p); err == nil {
	22	+	m.server.positioners[res.Resource] = p
	23	+	res.OnDestroy = func() { delete(m.server.positioners, res.Resource) }
	24	+	}
21	25		}
22	26		func (m wm) GetXdgSurface(r xdgshell.WmBase, id uint32, w wayland.Surface) {
23	27		if w == nil {

@@ -31,7 +35,7 @@ func (m wm) GetXdgSurface(r xdgshell.WmBase, id uint32, w wayland.Surface) {
31	35		r.PostError(uint32(xdgshell.WmBaseErrorRole), "surface already has role")
32	36		return
33	37		}
34		-	x := &xdgSurface{server: m.server, surface: state}
	38	+	x := &xdgSurface{wm: r, server: m.server, surface: state}
35	39		resource, err := xdgshell.NewSurface(r.Client(), r.Version(), id, x)
36	40		if err == nil {
37	41		x.resource = resource

@@ -42,27 +46,73 @@ func (m wm) GetXdgSurface(r xdgshell.WmBase, id uint32, w wayland.Surface) {
42	46
43	47		}
44	48
45		-	type positioner struct{}
	49	+	// positioner is an xdg_positioner: popups copy it when they use it.
	50	+	type positioner struct {
	51	+	p ports.Positioner
	52	+	sizeSet, anchorSet bool
	53	+	}
	54	+
	55	+	func (positioner) Destroy(xdgshell.Positioner) {}
	56	+	func (p positioner) SetSize(r xdgshell.Positioner, w, h int32) {
	57	+	if w <= 0 \|\| h <= 0 {
	58	+	r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "size must be positive")
	59	+	return
	60	+	}
	61	+	p.p.Width, p.p.Height, p.sizeSet = int(w), int(h), true
	62	+	}
	63	+	func (p positioner) SetAnchorRect(r xdgshell.Positioner, x, y, w, h int32) {
	64	+	if w < 0 \|\| h < 0 {
	65	+	r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "anchor rect size must not be negative")
	66	+	return
	67	+	}
	68	+	p.p.AnchorRect, p.anchorSet = ports.Rect{X: int(x), Y: int(y), W: int(w), H: int(h)}, true
	69	+	}
	70	+	func (p positioner) SetAnchor(r xdgshell.Positioner, v uint32) {
	71	+	if v > ports.EdgeBottomRight {
	72	+	r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "invalid anchor")
	73	+	return
	74	+	}
	75	+	p.p.Anchor = v
	76	+	}
	77	+	func (p positioner) SetGravity(r xdgshell.Positioner, v uint32) {
	78	+	if v > ports.EdgeBottomRight {
	79	+	r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "invalid gravity")
	80	+	return
	81	+	}
	82	+	p.p.Gravity = v
	83	+	}
	84	+	func (p positioner) SetConstraintAdjustment(_ xdgshell.Positioner, v uint32) { p.p.Adjust = v }
	85	+	func (p positioner) SetOffset(_ xdgshell.Positioner, x, y int32) {
	86	+	p.p.OffsetX, p.p.OffsetY = int(x), int(y)
	87	+	}
	88	+
	89	+	// Reactive popups, parent size and parent configure hints are not used:
	90	+	// core places popups when they are created or repositioned.
	91	+	func (positioner) SetReactive(xdgshell.Positioner) {}
	92	+	func (positioner) SetParentSize(xdgshell.Positioner, int32, int32) {}
	93	+	func (positioner) SetParentConfigure(xdgshell.Positioner, uint32) {}
46	94
47		-	func (positioner) Destroy(*xdgshell.Positioner) {}
48		-	func (positioner) SetSize(*xdgshell.Positioner, int32, int32) {}
49		-	func (positioner) SetAnchorRect(*xdgshell.Positioner, int32, int32, int32, int32) {}
50		-	func (positioner) SetAnchor(*xdgshell.Positioner, uint32) {}
51		-	func (positioner) SetGravity(*xdgshell.Positioner, uint32) {}
52		-	func (positioner) SetConstraintAdjustment(*xdgshell.Positioner, uint32) {}
53		-	func (positioner) SetOffset(*xdgshell.Positioner, int32, int32) {}
54		-	func (positioner) SetReactive(*xdgshell.Positioner) {}
55		-	func (positioner) SetParentSize(*xdgshell.Positioner, int32, int32) {}
56		-	func (positioner) SetParentConfigure(*xdgshell.Positioner, uint32) {}
	95	+	// positionerOf returns a complete positioner, or posts invalid_positioner.
	96	+	func (s Server) positionerOf(wm xdgshell.WmBase, p *xdgshell.Positioner) (ports.Positioner, bool) {
	97	+	if p != nil && p.Resource != nil {
	98	+	if state := s.positioners[p.Resource]; state != nil && state.sizeSet && state.anchorSet {
	99	+	return state.p, true
	100	+	}
	101	+	}
	102	+	if wm != nil {
	103	+	wm.PostError(uint32(xdgshell.WmBaseErrorInvalidPositioner), "incomplete positioner")
	104	+	}
	105	+	return ports.Positioner{}, false
	106	+	}
57	107
58	108		type xdgSurface struct {
	109	+	wm *xdgshell.WmBase
59	110		resource *xdgshell.Surface
60	111		server *Server
61	112		surface *surface
62	113		configured bool
63	114		acked bool
64	115		window *window
65		-	popup *xdgshell.Popup
66	116		serials []uint32
67	117		// geometry is the committed window geometry: the visible window inside
68	118		// client shadows. Empty means the whole surface.

@@ -70,17 +120,25 @@ type xdgSurface struct {
70	120		}
71	121
72	122		func (x xdgSurface) Destroy(r xdgshell.Surface) {
73		-	if x.window != nil \|\| x.popup != nil {
	123	+	if x.window != nil {
74	124		r.PostError(uint32(xdgshell.SurfaceErrorDefunctRoleObject), "role object still exists")
75	125		}
76	126		}
77	127
	128	+	// window is an xdg_toplevel, or an xdg_popup when popup is set.
78	129		type window struct {
79	130		id ports.WindowID
80	131		toplevel *xdgshell.Toplevel
	132	+	popup *popup
81	133		xdg *xdgSurface
82	134		appID, title string
83	135		mapped bool
	136	+	// parent is set_parent (dialogs); min and max are the size hints.
	137	+	parent *window
	138	+	minW, minH int32
	139	+	maxW, maxH int32
	140	+	floating bool
	141	+	floatW, floatH int // size last sent to core
84	142		// last is the most recent core configure, resent when decoration mode changes.
85	143		last ports.ConfigureWindow
86	144		hasLast bool

@@ -96,7 +154,7 @@ func (w *window) sendConfigure() {
96	154		if c.Activated {
97	155		states = binary.LittleEndian.AppendUint32(states, uint32(xdgshell.ToplevelStateActivated))
98	156		}
99		-	if !c.Fullscreen && w.toplevel.Version() >= 2 {
	157	+	if !c.Fullscreen && !c.Floating && w.toplevel.Version() >= 2 {
100	158		// Tiled: the client must use exactly this size (no CSD shadows or rounding).
101	159		for _, st := range []xdgshell.ToplevelState{xdgshell.ToplevelStateTiledLeft, xdgshell.ToplevelStateTiledRight, xdgshell.ToplevelStateTiledTop, xdgshell.ToplevelStateTiledBottom} {
102	160		states = binary.LittleEndian.AppendUint32(states, uint32(st))

@@ -127,7 +185,7 @@ func (w *window) unmap() {
127	185		w.xdg.server.emitContent(ports.SurfaceContent{ID: w.id})
128	186		}
129	187		func (x xdgSurface) GetToplevel(r xdgshell.Surface, id uint32) {
130		-	if x.window != nil \|\| x.popup != nil {
	188	+	if x.window != nil {
131	189		r.PostError(uint32(xdgshell.SurfaceErrorAlreadyConstructed), "role object already constructed")
132	190		return
133	191		}

@@ -154,8 +212,10 @@ func (x xdgSurface) GetToplevel(r xdgshell.Surface, id uint32) {
154	212		} else if buffer && !w.mapped && x.acked {
155	213		w.mapped = true
156	214		slot := x.server.slotToken(r.Client())
157		-	x.server.emit(ports.WindowMapped{ID: w.id, AppID: w.appID, Slot: slot, PID: r.Client().PID()})
158		-	x.server.log.Info().Uint64("id", uint64(w.id)).Str("app_id", w.appID).Str("slot", slot).Msg("window mapped")
	215	+	// Its size comes with the commit, in WindowResized (afterCommit).
	216	+	w.floating = w.floats()
	217	+	x.server.emit(ports.WindowMapped{ID: w.id, AppID: w.appID, Slot: slot, PID: r.Client().PID(), Floating: w.floating, Width: w.floatW, Height: w.floatH})
	218	+	x.server.log.Info().Uint64("id", uint64(w.id)).Str("app_id", w.appID).Str("slot", slot).Bool("floating", w.floating).Msg("window mapped")
159	219		} else if !buffer && w.mapped {
160	220		w.unmap()
161	221		}

@@ -173,16 +233,12 @@ func (x xdgSurface) GetToplevel(r xdgshell.Surface, id uint32) {
173	233		x.geometry, x.pendingGeometry = ports.Rect{}, ports.Rect{}
174	234		}
175	235		}
176		-	func (x xdgSurface) GetPopup(r xdgshell.Surface, id uint32, _ xdgshell.Surface, _ xdgshell.Positioner) {
177		-	if x.window != nil \|\| x.popup != nil {
	236	+	func (x xdgSurface) GetPopup(r xdgshell.Surface, id uint32, parent xdgshell.Surface, pos xdgshell.Positioner) {
	237	+	if x.window != nil {
178	238		r.PostError(uint32(xdgshell.SurfaceErrorAlreadyConstructed), "role object already constructed")
179	239		return
180	240		}
181		-	if p, e := xdgshell.NewPopup(r.Client(), r.Version(), id, popup{}); e == nil {
182		-	x.popup = p
183		-	p.OnDestroy = func() { x.popup = nil }
184		-	p.SendPopupDone()
185		-	}
	241	+	x.server.newPopup(x, r, id, parent, pos)
186	242		}
187	243
188	244		// SetWindowGeometry sets the visible window inside the surface; it

@@ -212,9 +268,19 @@ func (x xdgSurface) AckConfigure(r xdgshell.Surface, serial uint32) {
212	268
213	269		type top struct{ w *window }
214	270
215		-	func (top) Destroy(*xdgshell.Toplevel) {}
216		-	func (top) SetParent(xdgshell.Toplevel, xdgshell.Toplevel) {}
217		-	func (t top) SetTitle(_ *xdgshell.Toplevel, title string) { t.w.title = title }
	271	+	func (top) Destroy(*xdgshell.Toplevel) {}
	272	+	func (t top) SetParent(_ xdgshell.Toplevel, parent xdgshell.Toplevel) {
	273	+	t.w.parent = nil
	274	+	if parent == nil {
	275	+	return
	276	+	}
	277	+	for _, w := range t.w.xdg.server.windows {
	278	+	if w.toplevel != nil && w.toplevel.Resource == parent.Resource && w != t.w {
	279	+	t.w.parent = w
	280	+	}
	281	+	}
	282	+	}
	283	+	func (t top) SetTitle(_ *xdgshell.Toplevel, title string) { t.w.title = title }
218	284		func (t top) SetAppId(_ *xdgshell.Toplevel, appID string) {
219	285		if appID == t.w.appID {
220	286		return

@@ -227,10 +293,22 @@ func (t top) SetAppId(_ *xdgshell.Toplevel, appID string) {
227	293		func (top) ShowWindowMenu(xdgshell.Toplevel, wayland.Seat, uint32, int32, int32) {}
228	294		func (top) Move(xdgshell.Toplevel, wayland.Seat, uint32) {}
229	295		func (top) Resize(xdgshell.Toplevel, wayland.Seat, uint32, uint32) {}
230		-	func (top) SetMaxSize(*xdgshell.Toplevel, int32, int32) {}
231		-	func (top) SetMinSize(*xdgshell.Toplevel, int32, int32) {}
232		-	func (top) SetMaximized(*xdgshell.Toplevel) {}
233		-	func (top) UnsetMaximized(*xdgshell.Toplevel) {}
	296	+	func (t top) SetMaxSize(r *xdgshell.Toplevel, w, h int32) {
	297	+	if w < 0 \|\| h < 0 {
	298	+	r.PostError(uint32(xdgshell.ToplevelErrorInvalidSize), "negative max size")
	299	+	return
	300	+	}
	301	+	t.w.maxW, t.w.maxH = w, h
	302	+	}
	303	+	func (t top) SetMinSize(r *xdgshell.Toplevel, w, h int32) {
	304	+	if w < 0 \|\| h < 0 {
	305	+	r.PostError(uint32(xdgshell.ToplevelErrorInvalidSize), "negative min size")
	306	+	return
	307	+	}
	308	+	t.w.minW, t.w.minH = w, h
	309	+	}
	310	+	func (top) SetMaximized(*xdgshell.Toplevel) {}
	311	+	func (top) UnsetMaximized(*xdgshell.Toplevel) {}
234	312		func (t top) SetFullscreen(xdgshell.Toplevel, wayland.Output) {
235	313		if t.w.mapped {
236	314		t.w.xdg.server.emit(ports.WindowFullscreenRequest{ID: t.w.id, Fullscreen: true})

@@ -243,11 +321,34 @@ func (t top) UnsetFullscreen(*xdgshell.Toplevel) {
243	321		}
244	322		func (top) SetMinimized(*xdgshell.Toplevel) {}
245	323
246		-	type popup struct{}
	324	+	// afterCommit runs once the commit applied content and geometry: a
	325	+	// floating window keeps the size it draws.
	326	+	func (w *window) afterCommit() {
	327	+	if !w.mapped \|\| !w.floating {
	328	+	return
	329	+	}
	330	+	if fw, fh := w.size(); fw > 0 && fh > 0 && (fw != w.floatW \|\| fh != w.floatH) {
	331	+	w.floatW, w.floatH = fw, fh
	332	+	w.xdg.server.emit(ports.WindowResized{ID: w.id, Width: fw, Height: fh})
	333	+	}
	334	+	}
	335	+
	336	+	// floats reports whether the toplevel should float over the columns, as
	337	+	// on niri: dialogs (a parent) and fixed-size windows such as splash
	338	+	// screens.
	339	+	func (w *window) floats() bool {
	340	+	fixed := w.minW > 0 && w.minH > 0 && w.minW == w.maxW && w.minH == w.maxH
	341	+	return w.parent != nil \|\| fixed
	342	+	}
247	343
248		-	func (popup) Destroy(*xdgshell.Popup) {}
249		-	func (popup) Grab(xdgshell.Popup, wayland.Seat, uint32) {}
250		-	func (popup) Reposition(xdgshell.Popup, xdgshell.Positioner, uint32) {}
	344	+	// size is the window geometry size, else the surface size, in logical pixels.
	345	+	func (w *window) size() (int, int) {
	346	+	if g := w.xdg.geometry; g.W > 0 && g.H > 0 {
	347	+	return g.W, g.H
	348	+	}
	349	+	c := w.xdg.surface.content
	350	+	return c.LogicalW, c.LogicalH
	351	+	}
251	352
252	353		// surfacePoint turns window coordinates (core's, from the geometry origin)
253	354		// into surface coordinates.

 func (wm) Destroy(*xdgshell.WmBase)      {}
 func (wm) Pong(*xdgshell.WmBase, uint32) {}
-func (wm) CreatePositioner(r *xdgshell.WmBase, id uint32) {
+func (m wm) CreatePositioner(r *xdgshell.WmBase, id uint32) {
-	xdgshell.NewPositioner(r.Client(), r.Version(), id, positioner{})
+	p := &positioner{}
+	if res, err := xdgshell.NewPositioner(r.Client(), r.Version(), id, p); err == nil {
+		m.server.positioners[res.Resource] = p
+		res.OnDestroy = func() { delete(m.server.positioners, res.Resource) }
+	}
 }
 func (m wm) GetXdgSurface(r *xdgshell.WmBase, id uint32, w *wayland.Surface) {
 	if w == nil {
 		r.PostError(uint32(xdgshell.WmBaseErrorRole), "surface already has role")
 		return
 	}
-	x := &xdgSurface{server: m.server, surface: state}
+	x := &xdgSurface{wm: r, server: m.server, surface: state}
 	resource, err := xdgshell.NewSurface(r.Client(), r.Version(), id, x)
 	if err == nil {
 		x.resource = resource
 }
-type positioner struct{}
+// positioner is an xdg_positioner: popups copy it when they use it.
+type positioner struct {
+	p                  ports.Positioner
+	sizeSet, anchorSet bool
+}
+func (*positioner) Destroy(*xdgshell.Positioner) {}
+func (p *positioner) SetSize(r *xdgshell.Positioner, w, h int32) {
+	if w <= 0 || h <= 0 {
+		r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "size must be positive")
+		return
+	}
+	p.p.Width, p.p.Height, p.sizeSet = int(w), int(h), true
+}
+func (p *positioner) SetAnchorRect(r *xdgshell.Positioner, x, y, w, h int32) {
+	if w < 0 || h < 0 {
+		r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "anchor rect size must not be negative")
+		return
+	}
+	p.p.AnchorRect, p.anchorSet = ports.Rect{X: int(x), Y: int(y), W: int(w), H: int(h)}, true
+}
+func (p *positioner) SetAnchor(r *xdgshell.Positioner, v uint32) {
+	if v > ports.EdgeBottomRight {
+		r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "invalid anchor")
+		return
+	}
+	p.p.Anchor = v
+}
+func (p *positioner) SetGravity(r *xdgshell.Positioner, v uint32) {
+	if v > ports.EdgeBottomRight {
+		r.PostError(uint32(xdgshell.PositionerErrorInvalidInput), "invalid gravity")
+		return
+	}
+	p.p.Gravity = v
+}
+func (p *positioner) SetConstraintAdjustment(_ *xdgshell.Positioner, v uint32) { p.p.Adjust = v }
+func (p *positioner) SetOffset(_ *xdgshell.Positioner, x, y int32) {
+	p.p.OffsetX, p.p.OffsetY = int(x), int(y)
+}
+// Reactive popups, parent size and parent configure hints are not used:
+// core places popups when they are created or repositioned.
+func (*positioner) SetReactive(*xdgshell.Positioner)                 {}
+func (*positioner) SetParentSize(*xdgshell.Positioner, int32, int32) {}
+func (*positioner) SetParentConfigure(*xdgshell.Positioner, uint32)  {}
-func (positioner) Destroy(*xdgshell.Positioner)                                   {}
+// positionerOf returns a complete positioner, or posts invalid_positioner.
-func (positioner) SetSize(*xdgshell.Positioner, int32, int32)                     {}
+func (s *Server) positionerOf(wm *xdgshell.WmBase, p *xdgshell.Positioner) (ports.Positioner, bool) {
-func (positioner) SetAnchorRect(*xdgshell.Positioner, int32, int32, int32, int32) {}
+	if p != nil && p.Resource != nil {
-func (positioner) SetAnchor(*xdgshell.Positioner, uint32)                         {}
+		if state := s.positioners[p.Resource]; state != nil && state.sizeSet && state.anchorSet {
-func (positioner) SetGravity(*xdgshell.Positioner, uint32)                        {}
+			return state.p, true
-func (positioner) SetConstraintAdjustment(*xdgshell.Positioner, uint32)           {}
+		}
-func (positioner) SetOffset(*xdgshell.Positioner, int32, int32)                   {}
+	}
-func (positioner) SetReactive(*xdgshell.Positioner)                               {}
+	if wm != nil {
-func (positioner) SetParentSize(*xdgshell.Positioner, int32, int32)               {}
+		wm.PostError(uint32(xdgshell.WmBaseErrorInvalidPositioner), "incomplete positioner")
-func (positioner) SetParentConfigure(*xdgshell.Positioner, uint32)                {}
+	}
+	return ports.Positioner{}, false
+}
 type xdgSurface struct {
+	wm         *xdgshell.WmBase
 	resource   *xdgshell.Surface
 	server     *Server
 	surface    *surface
 	configured bool
 	acked      bool
 	window     *window
-	popup      *xdgshell.Popup
 	serials    []uint32
 	// geometry is the committed window geometry: the visible window inside
 	// client shadows. Empty means the whole surface.
 }
 func (x *xdgSurface) Destroy(r *xdgshell.Surface) {
-	if x.window != nil || x.popup != nil {
+	if x.window != nil {
 		r.PostError(uint32(xdgshell.SurfaceErrorDefunctRoleObject), "role object still exists")
 	}
 }
+// window is an xdg_toplevel, or an xdg_popup when popup is set.
 type window struct {
 	id           ports.WindowID
 	toplevel     *xdgshell.Toplevel
+	popup        *popup
 	xdg          *xdgSurface
 	appID, title string
 	mapped       bool
+	// parent is set_parent (dialogs); min and max are the size hints.
+	parent         *window
+	minW, minH     int32
+	maxW, maxH     int32
+	floating       bool
+	floatW, floatH int // size last sent to core
 	// last is the most recent core configure, resent when decoration mode changes.
 	last    ports.ConfigureWindow
 	hasLast bool
 	if c.Activated {
 		states = binary.LittleEndian.AppendUint32(states, uint32(xdgshell.ToplevelStateActivated))
 	}
-	if !c.Fullscreen && w.toplevel.Version() >= 2 {
+	if !c.Fullscreen && !c.Floating && w.toplevel.Version() >= 2 {
 		// Tiled: the client must use exactly this size (no CSD shadows or rounding).
 		for _, st := range []xdgshell.ToplevelState{xdgshell.ToplevelStateTiledLeft, xdgshell.ToplevelStateTiledRight, xdgshell.ToplevelStateTiledTop, xdgshell.ToplevelStateTiledBottom} {
 			states = binary.LittleEndian.AppendUint32(states, uint32(st))
 	w.xdg.server.emitContent(ports.SurfaceContent{ID: w.id})
 }
 func (x *xdgSurface) GetToplevel(r *xdgshell.Surface, id uint32) {
-	if x.window != nil || x.popup != nil {
+	if x.window != nil {
 		r.PostError(uint32(xdgshell.SurfaceErrorAlreadyConstructed), "role object already constructed")
 		return
 	}
 		} else if buffer && !w.mapped && x.acked {
 			w.mapped = true
 			slot := x.server.slotToken(r.Client())
-			x.server.emit(ports.WindowMapped{ID: w.id, AppID: w.appID, Slot: slot, PID: r.Client().PID()})
+			// Its size comes with the commit, in WindowResized (afterCommit).
-			x.server.log.Info().Uint64("id", uint64(w.id)).Str("app_id", w.appID).Str("slot", slot).Msg("window mapped")
+			w.floating = w.floats()
+			x.server.emit(ports.WindowMapped{ID: w.id, AppID: w.appID, Slot: slot, PID: r.Client().PID(), Floating: w.floating, Width: w.floatW, Height: w.floatH})
+			x.server.log.Info().Uint64("id", uint64(w.id)).Str("app_id", w.appID).Str("slot", slot).Bool("floating", w.floating).Msg("window mapped")
 		} else if !buffer && w.mapped {
 			w.unmap()
 		}
 		x.geometry, x.pendingGeometry = ports.Rect{}, ports.Rect{}
 	}
 }
-func (x *xdgSurface) GetPopup(r *xdgshell.Surface, id uint32, _ *xdgshell.Surface, _ *xdgshell.Positioner) {
+func (x *xdgSurface) GetPopup(r *xdgshell.Surface, id uint32, parent *xdgshell.Surface, pos *xdgshell.Positioner) {
-	if x.window != nil || x.popup != nil {
+	if x.window != nil {
 		r.PostError(uint32(xdgshell.SurfaceErrorAlreadyConstructed), "role object already constructed")
 		return
 	}
-	if p, e := xdgshell.NewPopup(r.Client(), r.Version(), id, popup{}); e == nil {
+	x.server.newPopup(x, r, id, parent, pos)
-		x.popup = p
-		p.OnDestroy = func() { x.popup = nil }
-		p.SendPopupDone()
-	}
 }
 // SetWindowGeometry sets the visible window inside the surface; it
 type top struct{ w *window }
-func (top) Destroy(*xdgshell.Toplevel)                       {}
+func (top) Destroy(*xdgshell.Toplevel) {}
-func (top) SetParent(*xdgshell.Toplevel, *xdgshell.Toplevel) {}
+func (t top) SetParent(_ *xdgshell.Toplevel, parent *xdgshell.Toplevel) {
-func (t top) SetTitle(_ *xdgshell.Toplevel, title string)    { t.w.title = title }
+	t.w.parent = nil
+	if parent == nil {
+		return
+	}
+	for _, w := range t.w.xdg.server.windows {
+		if w.toplevel != nil && w.toplevel.Resource == parent.Resource && w != t.w {
+			t.w.parent = w
+		}
+	}
+}
+func (t top) SetTitle(_ *xdgshell.Toplevel, title string) { t.w.title = title }
 func (t top) SetAppId(_ *xdgshell.Toplevel, appID string) {
 	if appID == t.w.appID {
 		return
 func (top) ShowWindowMenu(*xdgshell.Toplevel, *wayland.Seat, uint32, int32, int32) {}
 func (top) Move(*xdgshell.Toplevel, *wayland.Seat, uint32)                         {}
 func (top) Resize(*xdgshell.Toplevel, *wayland.Seat, uint32, uint32)               {}
-func (top) SetMaxSize(*xdgshell.Toplevel, int32, int32)                            {}
+func (t top) SetMaxSize(r *xdgshell.Toplevel, w, h int32) {
-func (top) SetMinSize(*xdgshell.Toplevel, int32, int32)                            {}
+	if w < 0 || h < 0 {
-func (top) SetMaximized(*xdgshell.Toplevel)                                        {}
+		r.PostError(uint32(xdgshell.ToplevelErrorInvalidSize), "negative max size")
-func (top) UnsetMaximized(*xdgshell.Toplevel)                                      {}
+		return
+	}
+	t.w.maxW, t.w.maxH = w, h
+}
+func (t top) SetMinSize(r *xdgshell.Toplevel, w, h int32) {
+	if w < 0 || h < 0 {
+		r.PostError(uint32(xdgshell.ToplevelErrorInvalidSize), "negative min size")
+		return
+	}
+	t.w.minW, t.w.minH = w, h
+}
+func (top) SetMaximized(*xdgshell.Toplevel)   {}
+func (top) UnsetMaximized(*xdgshell.Toplevel) {}
 func (t top) SetFullscreen(*xdgshell.Toplevel, *wayland.Output) {
 	if t.w.mapped {
 		t.w.xdg.server.emit(ports.WindowFullscreenRequest{ID: t.w.id, Fullscreen: true})
 }
 func (top) SetMinimized(*xdgshell.Toplevel) {}
-type popup struct{}
+// afterCommit runs once the commit applied content and geometry: a
+// floating window keeps the size it draws.
+func (w *window) afterCommit() {
+	if !w.mapped || !w.floating {
+		return
+	}
+	if fw, fh := w.size(); fw > 0 && fh > 0 && (fw != w.floatW || fh != w.floatH) {
+		w.floatW, w.floatH = fw, fh
+		w.xdg.server.emit(ports.WindowResized{ID: w.id, Width: fw, Height: fh})
+	}
+}
+// floats reports whether the toplevel should float over the columns, as
+// on niri: dialogs (a parent) and fixed-size windows such as splash
+// screens.
+func (w *window) floats() bool {
+	fixed := w.minW > 0 && w.minH > 0 && w.minW == w.maxW && w.minH == w.maxH
+	return w.parent != nil || fixed
+}
-func (popup) Destroy(*xdgshell.Popup)                                  {}
+// size is the window geometry size, else the surface size, in logical pixels.
-func (popup) Grab(*xdgshell.Popup, *wayland.Seat, uint32)              {}
+func (w *window) size() (int, int) {
-func (popup) Reposition(*xdgshell.Popup, *xdgshell.Positioner, uint32) {}
+	if g := w.xdg.geometry; g.W > 0 && g.H > 0 {
+		return g.W, g.H
+	}
+	c := w.xdg.surface.content
+	return c.LogicalW, c.LogicalH
+}
 // surfacePoint turns window coordinates (core's, from the geometry origin)
 // into surface coordinates.

M internal/core/core.go +57 -5


@@ -78,6 +78,9 @@ type Core struct {
78	78		// clients holds the app ID and PID of mapped windows, for State.
79	79		clients map[WindowID]ports.WindowMapped
80	80		sentState ports.State
	81	+	// popups are the placed xdg_popups; popupOrder stacks them, oldest first.
	82	+	popups map[WindowID]*popupState
	83	+	popupOrder []WindowID
81	84		}
82	85
83	86		func keyName(s string) string {

@@ -260,7 +263,7 @@ func New(cfg ports.Config, ch Channels) (*Core, error) {
260	263		return nil, fmt.Errorf("scenes, layouts, constraints and state must have capacity 1")
261	264		}
262	265		// A placeholder screen holds windows until the first output arrives.
263		-	c := &Core{screens: []screen{{mon: NewMonitor(), scale: 1, cfgScale: 1}}, slots: map[slotKey]slotState{}, terms: map[string]*termSpawn{}, clients: map[WindowID]ports.WindowMapped{}, ch: ch, pressed: map[string]bool{}, buttons: map[uint32]bool{}, sent: map[WindowID]ports.ConfigureWindow{}}
	266	+	c := &Core{screens: []screen{{mon: NewMonitor(), scale: 1, cfgScale: 1}}, slots: map[slotKey]slotState{}, terms: map[string]termSpawn{}, clients: map[WindowID]ports.WindowMapped{}, popups: map[WindowID]popupState{}, ch: ch, pressed: map[string]bool{}, buttons: map[uint32]bool{}, sent: map[WindowID]ports.ConfigureWindow{}}
264	267		if err := c.apply(cfg); err != nil {
265	268		return nil, err
266	269		}

@@ -314,6 +317,10 @@ func (c *Core) keyboardFocus() WindowID {
314	317		if layer != 0 {
315	318		return layer
316	319		}
	320	+	// A menu with a grab takes the keyboard until it closes.
	321	+	if g := c.grabFocus(); g != 0 {
	322	+	return g
	323	+	}
317	324		id, _ := c.cur().mon.Focused()
318	325		return id
319	326		}

@@ -337,6 +344,9 @@ func (c *Core) setLayers(all []ports.LayerSurface) {
337	344		}
338	345
339	346		func (c *Core) publish(ctx context.Context) error {
	347	+	if err := c.closeHiddenPopups(ctx); err != nil {
	348	+	return err
	349	+	}
340	350		// Clients learn outputs and scales before the configures sized for them.
341	351		if v := (ports.SetOutputs{Outputs: c.layout(), Focused: c.cur().name()}); !sameOutputs(v, c.sentOutputs) {
342	352		if err := c.command(ctx, v); err != nil {

@@ -372,6 +382,7 @@ func (c *Core) publish(ctx context.Context) error {
372	382		// Only the focused output shows the focused border.
373	383		focused := p.Focused && i == c.focusScreen
374	384		scene.Windows = append(scene.Windows, ports.SceneWindow{ID: p.ID, Rect: p.Rect, Focused: focused, Fullscreen: p.Fullscreen, Hidden: p.Hidden, Borderless: p.Borderless})
	385	+	floating := p.Floating
375	386		if p.Hidden {
376	387		if old, ok := c.sent[p.ID]; ok && (old.Activated \|\| old.Output != "") {
377	388		old.Activated, old.Output = false, ""

@@ -383,7 +394,11 @@ func (c *Core) publish(ctx context.Context) error {
383	394		continue
384	395		}
385	396		r := c.clientRect(p)
386		-	v := ports.ConfigureWindow{ID: p.ID, Width: r.W, Height: r.H, Fullscreen: p.Fullscreen, Activated: focused, Output: sc.name()}
	397	+	v := ports.ConfigureWindow{ID: p.ID, Width: r.W, Height: r.H, Fullscreen: p.Fullscreen, Activated: focused, Floating: floating && !p.Fullscreen, Output: sc.name()}
	398	+	if v.Floating {
	399	+	// A floating window picks its own size.
	400	+	v.Width, v.Height = 0, 0
	401	+	}
387	402		if old, ok := c.sent[p.ID]; !ok \|\| old != v {
388	403		if err := c.command(ctx, v); err != nil {
389	404		return err

@@ -391,6 +406,7 @@ func (c *Core) publish(ctx context.Context) error {
391	406		c.sent[p.ID] = v
392	407		}
393	408		}
	409	+	scene.Windows = append(scene.Windows, c.scenePopups(sc)...)
394	410		scenes = append(scenes, scene)
395	411		}
396	412		for id := range c.sent {

@@ -496,12 +512,18 @@ func (c *Core) hit(x, y float64) (WindowID, float64, float64) {
496	512		return 0, 0, 0
497	513		}
498	514		lx, ly := x-float64(o.X), y-float64(o.Y)
	515	+	sc := c.screens[c.screenIndex(o.Info.Name)]
	516	+	// Popups are above everything but fullscreen covers nothing of them.
	517	+	if id, px, py := c.popupAt(sc, lx, ly); id != 0 {
	518	+	return id, px, py
	519	+	}
499	520		var id WindowID
500	521		var sx, sy float64
501		-	for _, p := range c.screens[c.screenIndex(o.Info.Name)].mon.Layout() {
	522	+	for _, p := range sc.mon.Layout() {
502	523		r := c.clientRect(p)
503	524		if !p.Hidden && r.W > 0 && r.H > 0 && lx >= float64(r.X) && lx < float64(r.X+r.W) && ly >= float64(r.Y) && ly < float64(r.Y+r.H) {
504		-	if id == 0 \|\| p.Fullscreen {
	525	+	// Floating windows come last in the layout and are on top.
	526	+	if id == 0 \|\| p.Fullscreen \|\| p.Floating {
505	527		id, sx, sy = p.ID, lx-float64(r.X), ly-float64(r.Y)
506	528		}
507	529		if p.Fullscreen {

@@ -541,17 +563,41 @@ func (c *Core) Run(ctx context.Context) error {
541	563		c.setLayers(v.Layers)
542	564		case ports.WindowMapped:
543	565		c.clients[v.ID] = v
544		-	if v.Slot == "" \|\| (!c.placeSlotWindow(v.ID, v.Slot) && !c.placeTerminal(v.ID, v.Slot)) {
	566	+	if v.Floating {
	567	+	if s, _ := c.screenOf(v.ID); s == nil {
	568	+	c.cur().mon.Current().AddFloating(v.ID, v.Width, v.Height)
	569	+	}
	570	+	} else if v.Slot == "" \|\| (!c.placeSlotWindow(v.ID, v.Slot) && !c.placeTerminal(v.ID, v.Slot)) {
545	571		if s, _ := c.screenOf(v.ID); s == nil {
546	572		c.cur().mon.AddWindow(v.ID)
547	573		}
548	574		}
	575	+	case ports.WindowResized:
	576	+	if _, w := c.screenOf(v.ID); w != nil {
	577	+	w.ResizeFloating(v.ID, v.Width, v.Height)
	578	+	}
	579	+	case ports.PopupRequest:
	580	+	if err := c.placePopup(ctx, v); err != nil {
	581	+	return nil
	582	+	}
	583	+	case ports.PopupMapped:
	584	+	if p := c.popups[v.ID]; p != nil {
	585	+	p.mapped = true
	586	+	}
549	587		case ports.WindowAppID:
550	588		if info, ok := c.clients[v.ID]; ok {
551	589		info.AppID = v.AppID
552	590		c.clients[v.ID] = info
553	591		}
554	592		case ports.WindowUnmapped:
	593	+	if c.popups[v.ID] != nil {
	594	+	if err := c.dropPopup(ctx, v.ID); err != nil {
	595	+	return nil
	596	+	}
	597	+	}
	598	+	if err := c.dropPopupsOf(ctx, v.ID); err != nil {
	599	+	return nil
	600	+	}
555	601		delete(c.clients, v.ID)
556	602		if s, _ := c.screenOf(v.ID); s != nil {
557	603		s.mon.RemoveWindow(v.ID)

@@ -655,6 +701,12 @@ func (c *Core) Run(ctx context.Context) error {
655	701		if c.grab != 0 {
656	702		id = c.grab
657	703		}
	704	+	if v.Pressed && len(c.buttons) == 0 {
	705	+	// A click outside an open menu closes it.
	706	+	if err := c.dismissGrabs(ctx, id); err != nil {
	707	+	return nil
	708	+	}
	709	+	}
658	710		if v.Pressed {
659	711		if len(c.buttons) == 0 {
660	712		c.grab = id

 	// clients holds the app ID and PID of mapped windows, for State.
 	clients   map[WindowID]ports.WindowMapped
 	sentState ports.State
+	// popups are the placed xdg_popups; popupOrder stacks them, oldest first.
+	popups     map[WindowID]*popupState
+	popupOrder []WindowID
 }
 func keyName(s string) string {
 		return nil, fmt.Errorf("scenes, layouts, constraints and state must have capacity 1")
 	}
 	// A placeholder screen holds windows until the first output arrives.
-	c := &Core{screens: []*screen{{mon: NewMonitor(), scale: 1, cfgScale: 1}}, slots: map[slotKey]*slotState{}, terms: map[string]*termSpawn{}, clients: map[WindowID]ports.WindowMapped{}, ch: ch, pressed: map[string]bool{}, buttons: map[uint32]bool{}, sent: map[WindowID]ports.ConfigureWindow{}}
+	c := &Core{screens: []*screen{{mon: NewMonitor(), scale: 1, cfgScale: 1}}, slots: map[slotKey]*slotState{}, terms: map[string]*termSpawn{}, clients: map[WindowID]ports.WindowMapped{}, popups: map[WindowID]*popupState{}, ch: ch, pressed: map[string]bool{}, buttons: map[uint32]bool{}, sent: map[WindowID]ports.ConfigureWindow{}}
 	if err := c.apply(cfg); err != nil {
 		return nil, err
 	}
 	if layer != 0 {
 		return layer
 	}
+	// A menu with a grab takes the keyboard until it closes.
+	if g := c.grabFocus(); g != 0 {
+		return g
+	}
 	id, _ := c.cur().mon.Focused()
 	return id
 }
 }
 func (c *Core) publish(ctx context.Context) error {
+	if err := c.closeHiddenPopups(ctx); err != nil {
+		return err
+	}
 	// Clients learn outputs and scales before the configures sized for them.
 	if v := (ports.SetOutputs{Outputs: c.layout(), Focused: c.cur().name()}); !sameOutputs(v, c.sentOutputs) {
 		if err := c.command(ctx, v); err != nil {
 			// Only the focused output shows the focused border.
 			focused := p.Focused && i == c.focusScreen
 			scene.Windows = append(scene.Windows, ports.SceneWindow{ID: p.ID, Rect: p.Rect, Focused: focused, Fullscreen: p.Fullscreen, Hidden: p.Hidden, Borderless: p.Borderless})
+			floating := p.Floating
 			if p.Hidden {
 				if old, ok := c.sent[p.ID]; ok && (old.Activated || old.Output != "") {
 					old.Activated, old.Output = false, ""
 				continue
 			}
 			r := c.clientRect(p)
-			v := ports.ConfigureWindow{ID: p.ID, Width: r.W, Height: r.H, Fullscreen: p.Fullscreen, Activated: focused, Output: sc.name()}
+			v := ports.ConfigureWindow{ID: p.ID, Width: r.W, Height: r.H, Fullscreen: p.Fullscreen, Activated: focused, Floating: floating && !p.Fullscreen, Output: sc.name()}
+			if v.Floating {
+				// A floating window picks its own size.
+				v.Width, v.Height = 0, 0
+			}
 			if old, ok := c.sent[p.ID]; !ok || old != v {
 				if err := c.command(ctx, v); err != nil {
 					return err
 				c.sent[p.ID] = v
 			}
 		}
+		scene.Windows = append(scene.Windows, c.scenePopups(sc)...)
 		scenes = append(scenes, scene)
 	}
 	for id := range c.sent {
 		return 0, 0, 0
 	}
 	lx, ly := x-float64(o.X), y-float64(o.Y)
+	sc := c.screens[c.screenIndex(o.Info.Name)]
+	// Popups are above everything but fullscreen covers nothing of them.
+	if id, px, py := c.popupAt(sc, lx, ly); id != 0 {
+		return id, px, py
+	}
 	var id WindowID
 	var sx, sy float64
-	for _, p := range c.screens[c.screenIndex(o.Info.Name)].mon.Layout() {
+	for _, p := range sc.mon.Layout() {
 		r := c.clientRect(p)
 		if !p.Hidden && r.W > 0 && r.H > 0 && lx >= float64(r.X) && lx < float64(r.X+r.W) && ly >= float64(r.Y) && ly < float64(r.Y+r.H) {
-			if id == 0 || p.Fullscreen {
+			// Floating windows come last in the layout and are on top.
+			if id == 0 || p.Fullscreen || p.Floating {
 				id, sx, sy = p.ID, lx-float64(r.X), ly-float64(r.Y)
 			}
 			if p.Fullscreen {
 				c.setLayers(v.Layers)
 			case ports.WindowMapped:
 				c.clients[v.ID] = v
-				if v.Slot == "" || (!c.placeSlotWindow(v.ID, v.Slot) && !c.placeTerminal(v.ID, v.Slot)) {
+				if v.Floating {
+					if s, _ := c.screenOf(v.ID); s == nil {
+						c.cur().mon.Current().AddFloating(v.ID, v.Width, v.Height)
+					}
+				} else if v.Slot == "" || (!c.placeSlotWindow(v.ID, v.Slot) && !c.placeTerminal(v.ID, v.Slot)) {
 					if s, _ := c.screenOf(v.ID); s == nil {
 						c.cur().mon.AddWindow(v.ID)
 					}
 				}
+			case ports.WindowResized:
+				if _, w := c.screenOf(v.ID); w != nil {
+					w.ResizeFloating(v.ID, v.Width, v.Height)
+				}
+			case ports.PopupRequest:
+				if err := c.placePopup(ctx, v); err != nil {
+					return nil
+				}
+			case ports.PopupMapped:
+				if p := c.popups[v.ID]; p != nil {
+					p.mapped = true
+				}
 			case ports.WindowAppID:
 				if info, ok := c.clients[v.ID]; ok {
 					info.AppID = v.AppID
 					c.clients[v.ID] = info
 				}
 			case ports.WindowUnmapped:
+				if c.popups[v.ID] != nil {
+					if err := c.dropPopup(ctx, v.ID); err != nil {
+						return nil
+					}
+				}
+				if err := c.dropPopupsOf(ctx, v.ID); err != nil {
+					return nil
+				}
 				delete(c.clients, v.ID)
 				if s, _ := c.screenOf(v.ID); s != nil {
 					s.mon.RemoveWindow(v.ID)
 				if c.grab != 0 {
 					id = c.grab
 				}
+				if v.Pressed && len(c.buttons) == 0 {
+					// A click outside an open menu closes it.
+					if err := c.dismissGrabs(ctx, id); err != nil {
+						return nil
+					}
+				}
 				if v.Pressed {
 					if len(c.buttons) == 0 {
 						c.grab = id

M internal/core/layout.go +119 -5


@@ -91,6 +91,8 @@ type Placement struct {
91	91		ID WindowID
92	92		Rect Rect
93	93		Fullscreen, Focused, Hidden bool
	94	+	// Floating windows sit over the columns at their own size.
	95	+	Floating bool
94	96		// Borderless is set when the column fills the usable width: it is the only
95	97		// column on screen, so no border marks focus.
96	98		Borderless bool

@@ -119,8 +121,14 @@ type Workspace struct {
119	121		Usable Rect
120	122		Gaps int
121	123		MaxColumns int
	124	+	// border is drawn around floating windows, inside their rect.
	125	+	border int
122	126		presets []Width
123	127		fullscreen WindowID
	128	+	// Floats are floating windows, bottom to top; floatFocus is set while
	129	+	// the top one has the focus instead of the columns.
	130	+	Floats []Float
	131	+	floatFocus bool
124	132		// home is the monitor (key or connector) the workspace belongs to; ""
125	133		// means the one it is on. On another monitor it is a guest; homePos is
126	134		// its position there, where it returns.

@@ -130,10 +138,51 @@ type Workspace struct {
130	138		termAt time.Time
131	139		}
132	140
133		-	func (w *Workspace) empty() bool { return len(w.Columns) == 0 }
	141	+	// Float is a floating window and its client size, logical.
	142	+	type Float struct {
	143	+	ID WindowID
	144	+	W, H int
	145	+	}
	146	+
	147	+	func (w *Workspace) empty() bool { return len(w.Columns) == 0 && len(w.Floats) == 0 }
	148	+
	149	+	// windows lists every window: columns first, then floating ones.
	150	+	func (w *Workspace) windows() []WindowID {
	151	+	var ids []WindowID
	152	+	for _, c := range w.Columns {
	153	+	ids = append(ids, c.Windows...)
	154	+	}
	155	+	for _, f := range w.Floats {
	156	+	ids = append(ids, f.ID)
	157	+	}
	158	+	return ids
	159	+	}
	160	+
	161	+	func (w *Workspace) floatIndex(id WindowID) int {
	162	+	return slices.IndexFunc(w.Floats, func(f Float) bool { return f.ID == id })
	163	+	}
	164	+
	165	+	// AddFloating shows a window over the columns and focuses it.
	166	+	func (w *Workspace) AddFloating(id WindowID, width, height int) {
	167	+	if id == 0 \|\| w.has(id) {
	168	+	return
	169	+	}
	170	+	w.Floats = append(w.Floats, Float{ID: id, W: width, H: height})
	171	+	w.floatFocus = true
	172	+	}
	173	+
	174	+	// ResizeFloating records the size a floating window draws.
	175	+	func (w *Workspace) ResizeFloating(id WindowID, width, height int) {
	176	+	if i := w.floatIndex(id); i >= 0 {
	177	+	w.Floats[i].W, w.Floats[i].H = width, height
	178	+	}
	179	+	}
134	180
135	181		// has reports whether the workspace holds the window.
136	182		func (w *Workspace) has(id WindowID) bool {
	183	+	if w.floatIndex(id) >= 0 {
	184	+	return true
	185	+	}
137	186		for _, c := range w.Columns {
138	187		for _, v := range c.Windows {
139	188		if v == id {

@@ -145,6 +194,9 @@ func (w *Workspace) has(id WindowID) bool {
145	194		}
146	195
147	196		func (w *Workspace) Focused() (WindowID, bool) {
	197	+	if w.floatFocus && len(w.Floats) > 0 {
	198	+	return w.Floats[len(w.Floats)-1].ID, true
	199	+	}
148	200		if w.Focus < 0 \|\| w.Focus >= len(w.Columns) {
149	201		return 0, false
150	202		}

@@ -223,6 +275,16 @@ func (w *Workspace) unslot(n int) {
223	275		}
224	276
225	277		func (w *Workspace) RemoveWindow(id WindowID) {
	278	+	if i := w.floatIndex(id); i >= 0 {
	279	+	w.Floats = slices.Delete(w.Floats, i, i+1)
	280	+	if w.fullscreen == id {
	281	+	w.fullscreen = 0
	282	+	}
	283	+	if len(w.Floats) == 0 {
	284	+	w.floatFocus = false
	285	+	}
	286	+	return
	287	+	}
226	288		for i := range w.Columns {
227	289		for j, v := range w.Columns[i].Windows {
228	290		if v != id {

@@ -256,8 +318,16 @@ func (w *Workspace) RemoveWindow(id WindowID) {
256	318		}
257	319		}
258	320
259		-	// FocusID selects a window and scrolls its column into view.
	321	+	// FocusID selects a window and scrolls its column into view; a floating
	322	+	// window is raised.
260	323		func (w *Workspace) FocusID(id WindowID) bool {
	324	+	if i := w.floatIndex(id); i >= 0 {
	325	+	f := w.Floats[i]
	326	+	w.Floats = append(slices.Delete(w.Floats, i, i+1), f)
	327	+	w.floatFocus = true
	328	+	return true
	329	+	}
	330	+	w.floatFocus = false
261	331		for i := range w.Columns {
262	332		for j, v := range w.Columns[i].Windows {
263	333		if v == id {

@@ -271,6 +341,11 @@ func (w *Workspace) FocusID(id WindowID) bool {
271	341		return false
272	342		}
273	343		func (w *Workspace) FocusColumn(dir int) {
	344	+	if w.floatFocus {
	345	+	// The first move leaves the floating window for the columns.
	346	+	w.floatFocus = false
	347	+	return
	348	+	}
274	349		if len(w.Columns) > 0 && (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {
275	350		w.Focus += dir
276	351		w.scroll()

@@ -279,6 +354,10 @@ func (w *Workspace) FocusColumn(dir int) {
279	354
280	355		// FocusWindow moves focus inside the column; false means it was already at the edge.
281	356		func (w *Workspace) FocusWindow(dir int) bool {
	357	+	if w.floatFocus {
	358	+	w.floatFocus = false
	359	+	return true
	360	+	}
282	361		if len(w.Columns) == 0 \|\| (dir != -1 && dir != 1) {
283	362		return false
284	363		}

@@ -291,6 +370,9 @@ func (w *Workspace) FocusWindow(dir int) bool {
291	370		return false
292	371		}
293	372		func (w *Workspace) MoveColumn(dir int) {
	373	+	if w.floatFocus {
	374	+	return
	375	+	}
294	376		if (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {
295	377		i := w.Focus
296	378		w.Columns[i], w.Columns[i+dir] = w.Columns[i+dir], w.Columns[i]

@@ -301,7 +383,7 @@ func (w *Workspace) MoveColumn(dir int) {
301	383
302	384		// takeColumn removes the focused column and returns it, as a normal column.
303	385		func (w *Workspace) takeColumn() (Column, bool) {
304		-	if len(w.Columns) == 0 {
	386	+	if len(w.Columns) == 0 \|\| w.floatFocus {
305	387		return Column{}, false
306	388		}
307	389		col := w.Columns[w.Focus]

@@ -328,7 +410,7 @@ func (w *Workspace) insertColumn(at int, col Column) {
328	410		}
329	411
330	412		func (w *Workspace) CycleWidth() {
331		-	if len(w.Columns) == 0 \|\| len(w.presets) == 0 {
	413	+	if len(w.Columns) == 0 \|\| len(w.presets) == 0 \|\| w.floatFocus {
332	414		return
333	415		}
334	416		// auto → presets in order → auto.

@@ -362,6 +444,14 @@ func (w *Workspace) ToggleFullscreen() {
362	444		// SetFullscreen applies a client request. It never moves focus: client
363	445		// requests are automatic events (ADR 011 golden rule).
364	446		func (w *Workspace) SetFullscreen(id WindowID, on bool) {
	447	+	if w.floatIndex(id) >= 0 {
	448	+	if on {
	449	+	w.fullscreen = id
	450	+	} else if w.fullscreen == id {
	451	+	w.fullscreen = 0
	452	+	}
	453	+	return
	454	+	}
365	455		for i := range w.Columns {
366	456		for _, v := range w.Columns[i].Windows {
367	457		if v == id {

@@ -539,9 +629,33 @@ func (w *Workspace) Layout() []Placement {
539	629		if hidden {
540	630		r = Rect{}
541	631		}
542		-	result = append(result, Placement{ID: id, Rect: r, Fullscreen: full, Focused: i == w.Focus && j == c.Focus, Hidden: hidden, Borderless: col.W >= w.Usable.W-2*gap && (w.Overflow != OverflowFixed \|\| len(w.Columns) == 1)})
	632	+	focused := !w.floatFocus && i == w.Focus && j == c.Focus
	633	+	result = append(result, Placement{ID: id, Rect: r, Fullscreen: full, Focused: focused, Hidden: hidden, Borderless: col.W >= w.Usable.W-2*gap && (w.Overflow != OverflowFixed \|\| len(w.Columns) == 1)})
543	634		y += h + gap
544	635		}
545	636		}
	637	+	// Floating windows go last: they are drawn and hit on top.
	638	+	for i, f := range w.Floats {
	639	+	p := Placement{ID: f.ID, Rect: w.floatRect(f), Floating: true, Focused: w.floatFocus && i == len(w.Floats)-1}
	640	+	if w.fullscreen == f.ID {
	641	+	p.Rect, p.Fullscreen = Rect{W: w.Output.W, H: w.Output.H}, true
	642	+	} else if w.fullscreen != 0 {
	643	+	// A fullscreen window covers the floating ones.
	644	+	p.Rect, p.Hidden = Rect{}, true
	645	+	}
	646	+	result = append(result, p)
	647	+	}
546	648		return result
547	649		}
	650	+
	651	+	// floatRect centres a floating window in the usable area, its border
	652	+	// around its client size, clamped to the area.
	653	+	func (w *Workspace) floatRect(f Float) Rect {
	654	+	u := w.Usable
	655	+	fw, fh := f.W, f.H
	656	+	if fw <= 0 \|\| fh <= 0 {
	657	+	fw, fh = u.W/2, u.H/2
	658	+	}
	659	+	fw, fh = min(fw+2w.border, u.W), min(fh+2w.border, u.H)
	660	+	return Rect{X: u.X + (u.W-fw)/2, Y: u.Y + (u.H-fh)/2, W: fw, H: fh}
	661	+	}


@@ -91,6 +91,8 @@ type Placement struct {
91		ID WindowID	91		ID WindowID
92		Rect Rect	92		Rect Rect
93		Fullscreen, Focused, Hidden bool	93		Fullscreen, Focused, Hidden bool
			94	+	// Floating windows sit over the columns at their own size.
			95	+	Floating bool
94		// Borderless is set when the column fills the usable width: it is the only	96		// Borderless is set when the column fills the usable width: it is the only
95		// column on screen, so no border marks focus.	97		// column on screen, so no border marks focus.
96		Borderless bool	98		Borderless bool

@@ -119,8 +121,14 @@ type Workspace struct {
119		Usable Rect	121		Usable Rect
120		Gaps int	122		Gaps int
121		MaxColumns int	123		MaxColumns int
			124	+	// border is drawn around floating windows, inside their rect.
			125	+	border int
122		presets []Width	126		presets []Width
123		fullscreen WindowID	127		fullscreen WindowID
			128	+	// Floats are floating windows, bottom to top; floatFocus is set while
			129	+	// the top one has the focus instead of the columns.
			130	+	Floats []Float
			131	+	floatFocus bool
124		// home is the monitor (key or connector) the workspace belongs to; ""	132		// home is the monitor (key or connector) the workspace belongs to; ""
125		// means the one it is on. On another monitor it is a guest; homePos is	133		// means the one it is on. On another monitor it is a guest; homePos is
126		// its position there, where it returns.	134		// its position there, where it returns.

@@ -130,10 +138,51 @@ type Workspace struct {
130		termAt time.Time	138		termAt time.Time
131		}	139		}
132			140
133	-	func (w *Workspace) empty() bool { return len(w.Columns) == 0 }	141	+	// Float is a floating window and its client size, logical.
			142	+	type Float struct {
			143	+	ID WindowID
			144	+	W, H int
			145	+	}
			146	+
			147	+	func (w *Workspace) empty() bool { return len(w.Columns) == 0 && len(w.Floats) == 0 }
			148	+
			149	+	// windows lists every window: columns first, then floating ones.
			150	+	func (w *Workspace) windows() []WindowID {
			151	+	var ids []WindowID
			152	+	for _, c := range w.Columns {
			153	+	ids = append(ids, c.Windows...)
			154	+	}
			155	+	for _, f := range w.Floats {
			156	+	ids = append(ids, f.ID)
			157	+	}
			158	+	return ids
			159	+	}
			160	+
			161	+	func (w *Workspace) floatIndex(id WindowID) int {
			162	+	return slices.IndexFunc(w.Floats, func(f Float) bool { return f.ID == id })
			163	+	}
			164	+
			165	+	// AddFloating shows a window over the columns and focuses it.
			166	+	func (w *Workspace) AddFloating(id WindowID, width, height int) {
			167	+	if id == 0 \|\| w.has(id) {
			168	+	return
			169	+	}
			170	+	w.Floats = append(w.Floats, Float{ID: id, W: width, H: height})
			171	+	w.floatFocus = true
			172	+	}
			173	+
			174	+	// ResizeFloating records the size a floating window draws.
			175	+	func (w *Workspace) ResizeFloating(id WindowID, width, height int) {
			176	+	if i := w.floatIndex(id); i >= 0 {
			177	+	w.Floats[i].W, w.Floats[i].H = width, height
			178	+	}
			179	+	}
134			180
135		// has reports whether the workspace holds the window.	181		// has reports whether the workspace holds the window.
136		func (w *Workspace) has(id WindowID) bool {	182		func (w *Workspace) has(id WindowID) bool {
			183	+	if w.floatIndex(id) >= 0 {
			184	+	return true
			185	+	}
137		for _, c := range w.Columns {	186		for _, c := range w.Columns {
138		for _, v := range c.Windows {	187		for _, v := range c.Windows {
139		if v == id {	188		if v == id {

@@ -145,6 +194,9 @@ func (w *Workspace) has(id WindowID) bool {
145		}	194		}
146			195
147		func (w *Workspace) Focused() (WindowID, bool) {	196		func (w *Workspace) Focused() (WindowID, bool) {
			197	+	if w.floatFocus && len(w.Floats) > 0 {
			198	+	return w.Floats[len(w.Floats)-1].ID, true
			199	+	}
148		if w.Focus < 0 \|\| w.Focus >= len(w.Columns) {	200		if w.Focus < 0 \|\| w.Focus >= len(w.Columns) {
149		return 0, false	201		return 0, false
150		}	202		}

@@ -223,6 +275,16 @@ func (w *Workspace) unslot(n int) {
223		}	275		}
224			276
225		func (w *Workspace) RemoveWindow(id WindowID) {	277		func (w *Workspace) RemoveWindow(id WindowID) {
			278	+	if i := w.floatIndex(id); i >= 0 {
			279	+	w.Floats = slices.Delete(w.Floats, i, i+1)
			280	+	if w.fullscreen == id {
			281	+	w.fullscreen = 0
			282	+	}
			283	+	if len(w.Floats) == 0 {
			284	+	w.floatFocus = false
			285	+	}
			286	+	return
			287	+	}
226		for i := range w.Columns {	288		for i := range w.Columns {
227		for j, v := range w.Columns[i].Windows {	289		for j, v := range w.Columns[i].Windows {
228		if v != id {	290		if v != id {

@@ -256,8 +318,16 @@ func (w *Workspace) RemoveWindow(id WindowID) {
256		}	318		}
257		}	319		}
258			320
259	-	// FocusID selects a window and scrolls its column into view.	321	+	// FocusID selects a window and scrolls its column into view; a floating
			322	+	// window is raised.
260		func (w *Workspace) FocusID(id WindowID) bool {	323		func (w *Workspace) FocusID(id WindowID) bool {
			324	+	if i := w.floatIndex(id); i >= 0 {
			325	+	f := w.Floats[i]
			326	+	w.Floats = append(slices.Delete(w.Floats, i, i+1), f)
			327	+	w.floatFocus = true
			328	+	return true
			329	+	}
			330	+	w.floatFocus = false
261		for i := range w.Columns {	331		for i := range w.Columns {
262		for j, v := range w.Columns[i].Windows {	332		for j, v := range w.Columns[i].Windows {
263		if v == id {	333		if v == id {

@@ -271,6 +341,11 @@ func (w *Workspace) FocusID(id WindowID) bool {
271		return false	341		return false
272		}	342		}
273		func (w *Workspace) FocusColumn(dir int) {	343		func (w *Workspace) FocusColumn(dir int) {
			344	+	if w.floatFocus {
			345	+	// The first move leaves the floating window for the columns.
			346	+	w.floatFocus = false
			347	+	return
			348	+	}
274		if len(w.Columns) > 0 && (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {	349		if len(w.Columns) > 0 && (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {
275		w.Focus += dir	350		w.Focus += dir
276		w.scroll()	351		w.scroll()

@@ -279,6 +354,10 @@ func (w *Workspace) FocusColumn(dir int) {
279			354
280		// FocusWindow moves focus inside the column; false means it was already at the edge.	355		// FocusWindow moves focus inside the column; false means it was already at the edge.
281		func (w *Workspace) FocusWindow(dir int) bool {	356		func (w *Workspace) FocusWindow(dir int) bool {
			357	+	if w.floatFocus {
			358	+	w.floatFocus = false
			359	+	return true
			360	+	}
282		if len(w.Columns) == 0 \|\| (dir != -1 && dir != 1) {	361		if len(w.Columns) == 0 \|\| (dir != -1 && dir != 1) {
283		return false	362		return false
284		}	363		}

@@ -291,6 +370,9 @@ func (w *Workspace) FocusWindow(dir int) bool {
291		return false	370		return false
292		}	371		}
293		func (w *Workspace) MoveColumn(dir int) {	372		func (w *Workspace) MoveColumn(dir int) {
			373	+	if w.floatFocus {
			374	+	return
			375	+	}
294		if (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {	376		if (dir == -1 \|\| dir == 1) && w.Focus+dir >= 0 && w.Focus+dir < len(w.Columns) {
295		i := w.Focus	377		i := w.Focus
296		w.Columns[i], w.Columns[i+dir] = w.Columns[i+dir], w.Columns[i]	378		w.Columns[i], w.Columns[i+dir] = w.Columns[i+dir], w.Columns[i]

@@ -301,7 +383,7 @@ func (w *Workspace) MoveColumn(dir int) {
301			383
302		// takeColumn removes the focused column and returns it, as a normal column.	384		// takeColumn removes the focused column and returns it, as a normal column.
303		func (w *Workspace) takeColumn() (Column, bool) {	385		func (w *Workspace) takeColumn() (Column, bool) {
304	-	if len(w.Columns) == 0 {	386	+	if len(w.Columns) == 0 \|\| w.floatFocus {
305		return Column{}, false	387		return Column{}, false
306		}	388		}
307		col := w.Columns[w.Focus]	389		col := w.Columns[w.Focus]

@@ -328,7 +410,7 @@ func (w *Workspace) insertColumn(at int, col Column) {
328		}	410		}
329			411
330		func (w *Workspace) CycleWidth() {	412		func (w *Workspace) CycleWidth() {
331	-	if len(w.Columns) == 0 \|\| len(w.presets) == 0 {	413	+	if len(w.Columns) == 0 \|\| len(w.presets) == 0 \|\| w.floatFocus {
332		return	414		return
333		}	415		}
334		// auto → presets in order → auto.	416		// auto → presets in order → auto.

@@ -362,6 +444,14 @@ func (w *Workspace) ToggleFullscreen() {
362		// SetFullscreen applies a client request. It never moves focus: client	444		// SetFullscreen applies a client request. It never moves focus: client
363		// requests are automatic events (ADR 011 golden rule).	445		// requests are automatic events (ADR 011 golden rule).
364		func (w *Workspace) SetFullscreen(id WindowID, on bool) {	446		func (w *Workspace) SetFullscreen(id WindowID, on bool) {
			447	+	if w.floatIndex(id) >= 0 {
			448	+	if on {
			449	+	w.fullscreen = id
			450	+	} else if w.fullscreen == id {
			451	+	w.fullscreen = 0
			452	+	}
			453	+	return
			454	+	}
365		for i := range w.Columns {	455		for i := range w.Columns {
366		for _, v := range w.Columns[i].Windows {	456		for _, v := range w.Columns[i].Windows {
367		if v == id {	457		if v == id {

@@ -539,9 +629,33 @@ func (w *Workspace) Layout() []Placement {
539		if hidden {	629		if hidden {
540		r = Rect{}	630		r = Rect{}
541		}	631		}
542	-	result = append(result, Placement{ID: id, Rect: r, Fullscreen: full, Focused: i == w.Focus && j == c.Focus, Hidden: hidden, Borderless: col.W >= w.Usable.W-2*gap && (w.Overflow != OverflowFixed \|\| len(w.Columns) == 1)})	632	+	focused := !w.floatFocus && i == w.Focus && j == c.Focus
			633	+	result = append(result, Placement{ID: id, Rect: r, Fullscreen: full, Focused: focused, Hidden: hidden, Borderless: col.W >= w.Usable.W-2*gap && (w.Overflow != OverflowFixed \|\| len(w.Columns) == 1)})
543		y += h + gap	634		y += h + gap
544		}	635		}
545		}	636		}
			637	+	// Floating windows go last: they are drawn and hit on top.
			638	+	for i, f := range w.Floats {
			639	+	p := Placement{ID: f.ID, Rect: w.floatRect(f), Floating: true, Focused: w.floatFocus && i == len(w.Floats)-1}
			640	+	if w.fullscreen == f.ID {
			641	+	p.Rect, p.Fullscreen = Rect{W: w.Output.W, H: w.Output.H}, true
			642	+	} else if w.fullscreen != 0 {
			643	+	// A fullscreen window covers the floating ones.
			644	+	p.Rect, p.Hidden = Rect{}, true
			645	+	}
			646	+	result = append(result, p)
			647	+	}
546		return result	648		return result
547		}	649		}
			650	+
			651	+	// floatRect centres a floating window in the usable area, its border
			652	+	// around its client size, clamped to the area.
			653	+	func (w *Workspace) floatRect(f Float) Rect {
			654	+	u := w.Usable
			655	+	fw, fh := f.W, f.H
			656	+	if fw <= 0 \|\| fh <= 0 {
			657	+	fw, fh = u.W/2, u.H/2
			658	+	}
			659	+	fw, fh = min(fw+2w.border, u.W), min(fh+2w.border, u.H)
			660	+	return Rect{X: u.X + (u.W-fw)/2, Y: u.Y + (u.H-fh)/2, W: fw, H: fh}
			661	+	}

M internal/core/monitor.go +16 -7


@@ -82,6 +82,7 @@ func (m Monitor) take(w Workspace) {
82	82		func (m Monitor) adopt(w Workspace, hidden bool, pos int) {
83	83		w.presets = append([]Width(nil), m.template.presets...)
84	84		w.Gaps = m.template.Gaps
	85	+	w.border = m.template.border
85	86		w.SetOutput(m.template.Output.W, m.template.Output.H)
86	87		w.SetUsable(m.template.Usable)
87	88		if hidden {

@@ -116,7 +117,7 @@ func (m Monitor) Current() Workspace {
116	117		func (m Monitor) newWorkspace() Workspace {
117	118		w := m.template
118	119		w.presets = append([]Width(nil), m.template.presets...)
119		-	w.Columns, w.home = nil, ""
	120	+	w.Columns, w.Floats, w.floatFocus, w.home = nil, nil, false, ""
120	121		return &w
121	122		}
122	123

@@ -255,8 +256,14 @@ func (m *Monitor) MoveToWorkspace(i int) {
255	256		if !ok \|\| m.Workspaces[i] == cur {
256	257		return
257	258		}
258		-	cur.RemoveWindow(id)
259		-	m.Workspaces[i].AddWindow(id)
	259	+	if f := cur.floatIndex(id); f >= 0 {
	260	+	fl := cur.Floats[f]
	261	+	cur.RemoveWindow(id)
	262	+	m.Workspaces[i].AddFloating(id, fl.W, fl.H)
	263	+	} else {
	264	+	cur.RemoveWindow(id)
	265	+	m.Workspaces[i].AddWindow(id)
	266	+	}
260	267		m.normalize()
261	268		}
262	269

@@ -271,10 +278,8 @@ func (m *Monitor) Layout() []Placement {
271	278		result = append(result, w.Layout()...)
272	279		continue
273	280		}
274		-	for _, c := range w.Columns {
275		-	for _, id := range c.Windows {
276		-	result = append(result, Placement{ID: id, Hidden: true})
277		-	}
	281	+	for _, id := range w.windows() {
	282	+	result = append(result, Placement{ID: id, Hidden: true})
278	283		}
279	284		}
280	285		return result

@@ -296,6 +301,7 @@ func (m *Monitor) SetOutput(width, height int) {
296	301		}
297	302		func (m Monitor) SetUsable(r Rect) { m.each(func(w Workspace) { w.SetUsable(r) }) }
298	303		func (m Monitor) SetGaps(g int) { m.each(func(w Workspace) { w.SetGaps(g) }) }
	304	+	func (m Monitor) SetBorder(b int) { m.each(func(w Workspace) { w.border = max(b, 0) }) }
299	305		func (m Monitor) SetPresets(v []Width) { m.each(func(w Workspace) { w.SetPresets(v) }) }
300	306
301	307		// SetMaxColumns sets the default; named workspaces may override it.

@@ -364,6 +370,9 @@ func (m *Monitor) SetNamed(specs []NamedWorkspace) {
364	370		m.Workspaces[m.Active].AddWindow(id)
365	371		}
366	372		}
	373	+	for _, f := range w.Floats {
	374	+	m.Workspaces[m.Active].AddFloating(f.ID, f.W, f.H)
	375	+	}
367	376		}
368	377		m.hidden = hidden
369	378		m.named = append([]NamedWorkspace(nil), specs...)

 func (m *Monitor) adopt(w *Workspace, hidden bool, pos int) {
 	w.presets = append([]Width(nil), m.template.presets...)
 	w.Gaps = m.template.Gaps
+	w.border = m.template.border
 	w.SetOutput(m.template.Output.W, m.template.Output.H)
 	w.SetUsable(m.template.Usable)
 	if hidden {
 func (m *Monitor) newWorkspace() *Workspace {
 	w := m.template
 	w.presets = append([]Width(nil), m.template.presets...)
-	w.Columns, w.home = nil, ""
+	w.Columns, w.Floats, w.floatFocus, w.home = nil, nil, false, ""
 	return &w
 }
 	if !ok || m.Workspaces[i] == cur {
 		return
 	}
-	cur.RemoveWindow(id)
+	if f := cur.floatIndex(id); f >= 0 {
-	m.Workspaces[i].AddWindow(id)
+		fl := cur.Floats[f]
+		cur.RemoveWindow(id)
+		m.Workspaces[i].AddFloating(id, fl.W, fl.H)
+	} else {
+		cur.RemoveWindow(id)
+		m.Workspaces[i].AddWindow(id)
+	}
 	m.normalize()
 }
 			result = append(result, w.Layout()...)
 			continue
 		}
-		for _, c := range w.Columns {
+		for _, id := range w.windows() {
-			for _, id := range c.Windows {
+			result = append(result, Placement{ID: id, Hidden: true})
-				result = append(result, Placement{ID: id, Hidden: true})
-			}
 		}
 	}
 	return result
 }
 func (m *Monitor) SetUsable(r Rect)     { m.each(func(w *Workspace) { w.SetUsable(r) }) }
 func (m *Monitor) SetGaps(g int)        { m.each(func(w *Workspace) { w.SetGaps(g) }) }
+func (m *Monitor) SetBorder(b int)      { m.each(func(w *Workspace) { w.border = max(b, 0) }) }
 func (m *Monitor) SetPresets(v []Width) { m.each(func(w *Workspace) { w.SetPresets(v) }) }
 // SetMaxColumns sets the default; named workspaces may override it.
 				m.Workspaces[m.Active].AddWindow(id)
 			}
 		}
+		for _, f := range w.Floats {
+			m.Workspaces[m.Active].AddFloating(f.ID, f.W, f.H)
+		}
 	}
 	m.hidden = hidden
 	m.named = append([]NamedWorkspace(nil), specs...)

A internal/core/popup.go +302 -0

@@ -0,0 +1,302 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"context"
	5	+	"slices"
	6	+
	7	+	"github.com/bnema/nefertty/internal/ports"
	8	+	)
	9	+
	10	+	// popupState is a placed xdg_popup. Rect is relative to the parent's
	11	+	// window geometry, as sent to the client.
	12	+	type popupState struct {
	13	+	id, parent WindowID
	14	+	rect Rect
	15	+	grab bool
	16	+	mapped bool
	17	+	}
	18	+
	19	+	// place computes a popup rectangle relative to its parent, kept inside
	20	+	// bounds (also parent-relative) as the positioner's adjustments allow.
	21	+	func place(p ports.Positioner, bounds Rect) Rect {
	22	+	r := initial(p, p.Anchor, p.Gravity)
	23	+	if bounds.W <= 0 \|\| bounds.H <= 0 {
	24	+	return r
	25	+	}
	26	+	outX := func(r Rect) bool { return r.X < bounds.X \|\| r.X+r.W > bounds.X+bounds.W }
	27	+	outY := func(r Rect) bool { return r.Y < bounds.Y \|\| r.Y+r.H > bounds.Y+bounds.H }
	28	+	if outX(r) && p.Adjust&ports.AdjustFlipX != 0 {
	29	+	if f := initial(p, flipX(p.Anchor), flipX(p.Gravity)); !outX(f) {
	30	+	r.X = f.X
	31	+	}
	32	+	}
	33	+	if outY(r) && p.Adjust&ports.AdjustFlipY != 0 {
	34	+	if f := initial(p, flipY(p.Anchor), flipY(p.Gravity)); !outY(f) {
	35	+	r.Y = f.Y
	36	+	}
	37	+	}
	38	+	if outX(r) && p.Adjust&ports.AdjustSlideX != 0 {
	39	+	r.X = max(min(r.X, bounds.X+bounds.W-r.W), bounds.X)
	40	+	}
	41	+	if outY(r) && p.Adjust&ports.AdjustSlideY != 0 {
	42	+	r.Y = max(min(r.Y, bounds.Y+bounds.H-r.H), bounds.Y)
	43	+	}
	44	+	if outX(r) && p.Adjust&ports.AdjustResizeX != 0 {
	45	+	x0, x1 := max(r.X, bounds.X), min(r.X+r.W, bounds.X+bounds.W)
	46	+	if x1 > x0 {
	47	+	r.X, r.W = x0, x1-x0
	48	+	}
	49	+	}
	50	+	if outY(r) && p.Adjust&ports.AdjustResizeY != 0 {
	51	+	y0, y1 := max(r.Y, bounds.Y), min(r.Y+r.H, bounds.Y+bounds.H)
	52	+	if y1 > y0 {
	53	+	r.Y, r.H = y0, y1-y0
	54	+	}
	55	+	}
	56	+	return r
	57	+	}
	58	+
	59	+	// initial is the unconstrained placement for an anchor and gravity.
	60	+	func initial(p ports.Positioner, anchor, gravity uint32) Rect {
	61	+	a := p.AnchorRect
	62	+	x, y := a.X+a.W/2, a.Y+a.H/2
	63	+	switch anchor {
	64	+	case ports.EdgeLeft, ports.EdgeTopLeft, ports.EdgeBottomLeft:
	65	+	x = a.X
	66	+	case ports.EdgeRight, ports.EdgeTopRight, ports.EdgeBottomRight:
	67	+	x = a.X + a.W
	68	+	}
	69	+	switch anchor {
	70	+	case ports.EdgeTop, ports.EdgeTopLeft, ports.EdgeTopRight:
	71	+	y = a.Y
	72	+	case ports.EdgeBottom, ports.EdgeBottomLeft, ports.EdgeBottomRight:
	73	+	y = a.Y + a.H
	74	+	}
	75	+	x, y = x+p.OffsetX, y+p.OffsetY
	76	+	r := Rect{X: x - p.Width/2, Y: y - p.Height/2, W: p.Width, H: p.Height}
	77	+	switch gravity {
	78	+	case ports.EdgeLeft, ports.EdgeTopLeft, ports.EdgeBottomLeft:
	79	+	r.X = x - p.Width
	80	+	case ports.EdgeRight, ports.EdgeTopRight, ports.EdgeBottomRight:
	81	+	r.X = x
	82	+	}
	83	+	switch gravity {
	84	+	case ports.EdgeTop, ports.EdgeTopLeft, ports.EdgeTopRight:
	85	+	r.Y = y - p.Height
	86	+	case ports.EdgeBottom, ports.EdgeBottomLeft, ports.EdgeBottomRight:
	87	+	r.Y = y
	88	+	}
	89	+	return r
	90	+	}
	91	+
	92	+	func flipX(e uint32) uint32 {
	93	+	switch e {
	94	+	case ports.EdgeLeft:
	95	+	return ports.EdgeRight
	96	+	case ports.EdgeRight:
	97	+	return ports.EdgeLeft
	98	+	case ports.EdgeTopLeft:
	99	+	return ports.EdgeTopRight
	100	+	case ports.EdgeTopRight:
	101	+	return ports.EdgeTopLeft
	102	+	case ports.EdgeBottomLeft:
	103	+	return ports.EdgeBottomRight
	104	+	case ports.EdgeBottomRight:
	105	+	return ports.EdgeBottomLeft
	106	+	}
	107	+	return e
	108	+	}
	109	+
	110	+	func flipY(e uint32) uint32 {
	111	+	switch e {
	112	+	case ports.EdgeTop:
	113	+	return ports.EdgeBottom
	114	+	case ports.EdgeBottom:
	115	+	return ports.EdgeTop
	116	+	case ports.EdgeTopLeft:
	117	+	return ports.EdgeBottomLeft
	118	+	case ports.EdgeBottomLeft:
	119	+	return ports.EdgeTopLeft
	120	+	case ports.EdgeTopRight:
	121	+	return ports.EdgeBottomRight
	122	+	case ports.EdgeBottomRight:
	123	+	return ports.EdgeTopRight
	124	+	}
	125	+	return e
	126	+	}
	127	+
	128	+	// windowRect is where a window or popup is on its screen: its client
	129	+	// area, output-local and logical. ok is false when it is not on screen.
	130	+	func (c Core) windowRect(id WindowID) (screen, Rect, bool) {
	131	+	if p := c.popups[id]; p != nil {
	132	+	sc, pr, ok := c.windowRect(p.parent)
	133	+	if !ok {
	134	+	return nil, Rect{}, false
	135	+	}
	136	+	return sc, Rect{X: pr.X + p.rect.X, Y: pr.Y + p.rect.Y, W: p.rect.W, H: p.rect.H}, true
	137	+	}
	138	+	for _, sc := range c.screens {
	139	+	for _, pl := range sc.mon.Layout() {
	140	+	if pl.ID == id {
	141	+	if pl.Hidden {
	142	+	return nil, Rect{}, false
	143	+	}
	144	+	return sc, c.clientRect(pl), true
	145	+	}
	146	+	}
	147	+	}
	148	+	return nil, Rect{}, false
	149	+	}
	150	+
	151	+	// placePopup places a new or repositioned popup and configures it; a popup
	152	+	// whose parent is not on screen is dismissed.
	153	+	func (c *Core) placePopup(ctx context.Context, v ports.PopupRequest) error {
	154	+	sc, pr, ok := c.windowRect(v.Parent)
	155	+	if !ok {
	156	+	delete(c.popups, v.ID)
	157	+	return c.command(ctx, ports.ClosePopup{ID: v.ID})
	158	+	}
	159	+	o := sc.mon.Output()
	160	+	bounds := Rect{X: o.X - pr.X, Y: o.Y - pr.Y, W: o.W, H: o.H}
	161	+	p := c.popups[v.ID]
	162	+	if p == nil {
	163	+	p = &popupState{id: v.ID, parent: v.Parent}
	164	+	c.popups[v.ID] = p
	165	+	c.popupOrder = append(c.popupOrder, v.ID)
	166	+	}
	167	+	p.grab = v.Grab
	168	+	p.rect = place(v.Positioner, bounds)
	169	+	return c.command(ctx, ports.ConfigurePopup{ID: v.ID, Rect: p.rect, Reposition: v.Reposition, Token: v.Token})
	170	+	}
	171	+
	172	+	// dropPopup forgets a popup and dismisses its children.
	173	+	func (c *Core) dropPopup(ctx context.Context, id WindowID) error {
	174	+	if c.popups[id] == nil {
	175	+	return nil
	176	+	}
	177	+	delete(c.popups, id)
	178	+	c.popupOrder = slices.DeleteFunc(c.popupOrder, func(v WindowID) bool { return v == id })
	179	+	for _, child := range slices.Clone(c.popupOrder) {
	180	+	if p := c.popups[child]; p != nil && p.parent == id {
	181	+	if err := c.command(ctx, ports.ClosePopup{ID: child}); err != nil {
	182	+	return err
	183	+	}
	184	+	if err := c.dropPopup(ctx, child); err != nil {
	185	+	return err
	186	+	}
	187	+	}
	188	+	}
	189	+	if c.pointer == id {
	190	+	c.pointer = 0
	191	+	}
	192	+	return nil
	193	+	}
	194	+
	195	+	// dropPopupsOf dismisses the popups hanging from a window.
	196	+	func (c *Core) dropPopupsOf(ctx context.Context, id WindowID) error {
	197	+	for _, child := range slices.Clone(c.popupOrder) {
	198	+	if p := c.popups[child]; p != nil && p.parent == id {
	199	+	if err := c.command(ctx, ports.ClosePopup{ID: child}); err != nil {
	200	+	return err
	201	+	}
	202	+	if err := c.dropPopup(ctx, child); err != nil {
	203	+	return err
	204	+	}
	205	+	}
	206	+	}
	207	+	return nil
	208	+	}
	209	+
	210	+	// closeHiddenPopups dismisses popups whose window left the screen.
	211	+	func (c *Core) closeHiddenPopups(ctx context.Context) error {
	212	+	for _, id := range slices.Clone(c.popupOrder) {
	213	+	if c.popups[id] == nil {
	214	+	continue
	215	+	}
	216	+	if _, _, ok := c.windowRect(id); !ok {
	217	+	if err := c.command(ctx, ports.ClosePopup{ID: id}); err != nil {
	218	+	return err
	219	+	}
	220	+	if err := c.dropPopup(ctx, id); err != nil {
	221	+	return err
	222	+	}
	223	+	}
	224	+	}
	225	+	return nil
	226	+	}
	227	+
	228	+	// dismissGrabs closes the grabbing popups unless the click hit one of
	229	+	// them: a click outside a menu closes it.
	230	+	func (c *Core) dismissGrabs(ctx context.Context, hit WindowID) error {
	231	+	for _, id := range slices.Clone(c.popupOrder) {
	232	+	p := c.popups[id]
	233	+	if p == nil \|\| !p.grab {
	234	+	continue
	235	+	}
	236	+	// A click on a popup of the same chain keeps it; a click on
	237	+	// anything else, its parent window included, closes it.
	238	+	if c.popups[hit] != nil && (hit == id \|\| c.isAncestor(id, hit) \|\| c.isAncestor(hit, id)) {
	239	+	continue
	240	+	}
	241	+	if err := c.command(ctx, ports.ClosePopup{ID: id}); err != nil {
	242	+	return err
	243	+	}
	244	+	if err := c.dropPopup(ctx, id); err != nil {
	245	+	return err
	246	+	}
	247	+	}
	248	+	return nil
	249	+	}
	250	+
	251	+	// isAncestor reports whether a is a popup ancestor of b.
	252	+	func (c *Core) isAncestor(a, b WindowID) bool {
	253	+	for p := c.popups[b]; p != nil; p = c.popups[p.parent] {
	254	+	if p.parent == a {
	255	+	return true
	256	+	}
	257	+	}
	258	+	return false
	259	+	}
	260	+
	261	+	// grabFocus is the topmost mapped grabbing popup, which takes the keyboard.
	262	+	func (c *Core) grabFocus() WindowID {
	263	+	for i := len(c.popupOrder) - 1; i >= 0; i-- {
	264	+	if p := c.popups[c.popupOrder[i]]; p != nil && p.grab && p.mapped {
	265	+	return p.id
	266	+	}
	267	+	}
	268	+	return 0
	269	+	}
	270	+
	271	+	// popupAt returns the topmost mapped popup under the output-local point.
	272	+	func (c Core) popupAt(sc screen, lx, ly float64) (WindowID, float64, float64) {
	273	+	for i := len(c.popupOrder) - 1; i >= 0; i-- {
	274	+	p := c.popups[c.popupOrder[i]]
	275	+	if p == nil \|\| !p.mapped {
	276	+	continue
	277	+	}
	278	+	s, r, ok := c.windowRect(p.id)
	279	+	if !ok \|\| s != sc {
	280	+	continue
	281	+	}
	282	+	if lx >= float64(r.X) && lx < float64(r.X+r.W) && ly >= float64(r.Y) && ly < float64(r.Y+r.H) {
	283	+	return p.id, lx - float64(r.X), ly - float64(r.Y)
	284	+	}
	285	+	}
	286	+	return 0, 0, 0
	287	+	}
	288	+
	289	+	// scenePopups are the mapped popups on a screen, bottom to top.
	290	+	func (c Core) scenePopups(sc screen) []ports.SceneWindow {
	291	+	var out []ports.SceneWindow
	292	+	for _, id := range c.popupOrder {
	293	+	p := c.popups[id]
	294	+	if p == nil \|\| !p.mapped {
	295	+	continue
	296	+	}
	297	+	if s, r, ok := c.windowRect(id); ok && s == sc {
	298	+	out = append(out, ports.SceneWindow{ID: id, Rect: r, Popup: true})
	299	+	}
	300	+	}
	301	+	return out
	302	+	}

@@ -0,0 +1,302 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"context"
	5	+	"slices"
	6	+
	7	+	"github.com/bnema/nefertty/internal/ports"
	8	+	)
	9	+
	10	+	// popupState is a placed xdg_popup. Rect is relative to the parent's
	11	+	// window geometry, as sent to the client.
	12	+	type popupState struct {
	13	+	id, parent WindowID
	14	+	rect Rect
	15	+	grab bool
	16	+	mapped bool
	17	+	}
	18	+
	19	+	// place computes a popup rectangle relative to its parent, kept inside
	20	+	// bounds (also parent-relative) as the positioner's adjustments allow.
	21	+	func place(p ports.Positioner, bounds Rect) Rect {
	22	+	r := initial(p, p.Anchor, p.Gravity)
	23	+	if bounds.W <= 0 \|\| bounds.H <= 0 {
	24	+	return r
	25	+	}
	26	+	outX := func(r Rect) bool { return r.X < bounds.X \|\| r.X+r.W > bounds.X+bounds.W }
	27	+	outY := func(r Rect) bool { return r.Y < bounds.Y \|\| r.Y+r.H > bounds.Y+bounds.H }
	28	+	if outX(r) && p.Adjust&ports.AdjustFlipX != 0 {
	29	+	if f := initial(p, flipX(p.Anchor), flipX(p.Gravity)); !outX(f) {
	30	+	r.X = f.X
	31	+	}
	32	+	}
	33	+	if outY(r) && p.Adjust&ports.AdjustFlipY != 0 {
	34	+	if f := initial(p, flipY(p.Anchor), flipY(p.Gravity)); !outY(f) {
	35	+	r.Y = f.Y
	36	+	}
	37	+	}
	38	+	if outX(r) && p.Adjust&ports.AdjustSlideX != 0 {
	39	+	r.X = max(min(r.X, bounds.X+bounds.W-r.W), bounds.X)
	40	+	}
	41	+	if outY(r) && p.Adjust&ports.AdjustSlideY != 0 {
	42	+	r.Y = max(min(r.Y, bounds.Y+bounds.H-r.H), bounds.Y)
	43	+	}
	44	+	if outX(r) && p.Adjust&ports.AdjustResizeX != 0 {
	45	+	x0, x1 := max(r.X, bounds.X), min(r.X+r.W, bounds.X+bounds.W)
	46	+	if x1 > x0 {
	47	+	r.X, r.W = x0, x1-x0
	48	+	}
	49	+	}
	50	+	if outY(r) && p.Adjust&ports.AdjustResizeY != 0 {
	51	+	y0, y1 := max(r.Y, bounds.Y), min(r.Y+r.H, bounds.Y+bounds.H)
	52	+	if y1 > y0 {
	53	+	r.Y, r.H = y0, y1-y0
	54	+	}
	55	+	}
	56	+	return r
	57	+	}
	58	+
	59	+	// initial is the unconstrained placement for an anchor and gravity.
	60	+	func initial(p ports.Positioner, anchor, gravity uint32) Rect {
	61	+	a := p.AnchorRect
	62	+	x, y := a.X+a.W/2, a.Y+a.H/2
	63	+	switch anchor {
	64	+	case ports.EdgeLeft, ports.EdgeTopLeft, ports.EdgeBottomLeft:
	65	+	x = a.X
	66	+	case ports.EdgeRight, ports.EdgeTopRight, ports.EdgeBottomRight:
	67	+	x = a.X + a.W
	68	+	}
	69	+	switch anchor {
	70	+	case ports.EdgeTop, ports.EdgeTopLeft, ports.EdgeTopRight:
	71	+	y = a.Y
	72	+	case ports.EdgeBottom, ports.EdgeBottomLeft, ports.EdgeBottomRight:
	73	+	y = a.Y + a.H
	74	+	}
	75	+	x, y = x+p.OffsetX, y+p.OffsetY
	76	+	r := Rect{X: x - p.Width/2, Y: y - p.Height/2, W: p.Width, H: p.Height}
	77	+	switch gravity {
	78	+	case ports.EdgeLeft, ports.EdgeTopLeft, ports.EdgeBottomLeft:
	79	+	r.X = x - p.Width
	80	+	case ports.EdgeRight, ports.EdgeTopRight, ports.EdgeBottomRight:
	81	+	r.X = x
	82	+	}
	83	+	switch gravity {
	84	+	case ports.EdgeTop, ports.EdgeTopLeft, ports.EdgeTopRight:
	85	+	r.Y = y - p.Height
	86	+	case ports.EdgeBottom, ports.EdgeBottomLeft, ports.EdgeBottomRight:
	87	+	r.Y = y
	88	+	}
	89	+	return r
	90	+	}
	91	+
	92	+	func flipX(e uint32) uint32 {
	93	+	switch e {
	94	+	case ports.EdgeLeft:
	95	+	return ports.EdgeRight
	96	+	case ports.EdgeRight:
	97	+	return ports.EdgeLeft
	98	+	case ports.EdgeTopLeft:
	99	+	return ports.EdgeTopRight
	100	+	case ports.EdgeTopRight:
	101	+	return ports.EdgeTopLeft
	102	+	case ports.EdgeBottomLeft:
	103	+	return ports.EdgeBottomRight
	104	+	case ports.EdgeBottomRight:
	105	+	return ports.EdgeBottomLeft
	106	+	}
	107	+	return e
	108	+	}
	109	+
	110	+	func flipY(e uint32) uint32 {
	111	+	switch e {
	112	+	case ports.EdgeTop:
	113	+	return ports.EdgeBottom
	114	+	case ports.EdgeBottom:
	115	+	return ports.EdgeTop
	116	+	case ports.EdgeTopLeft:
	117	+	return ports.EdgeBottomLeft
	118	+	case ports.EdgeBottomLeft:
	119	+	return ports.EdgeTopLeft
	120	+	case ports.EdgeTopRight:
	121	+	return ports.EdgeBottomRight
	122	+	case ports.EdgeBottomRight:
	123	+	return ports.EdgeTopRight
	124	+	}
	125	+	return e
	126	+	}
	127	+
	128	+	// windowRect is where a window or popup is on its screen: its client
	129	+	// area, output-local and logical. ok is false when it is not on screen.
	130	+	func (c Core) windowRect(id WindowID) (screen, Rect, bool) {
	131	+	if p := c.popups[id]; p != nil {
	132	+	sc, pr, ok := c.windowRect(p.parent)
	133	+	if !ok {
	134	+	return nil, Rect{}, false
	135	+	}
	136	+	return sc, Rect{X: pr.X + p.rect.X, Y: pr.Y + p.rect.Y, W: p.rect.W, H: p.rect.H}, true
	137	+	}
	138	+	for _, sc := range c.screens {
	139	+	for _, pl := range sc.mon.Layout() {
	140	+	if pl.ID == id {
	141	+	if pl.Hidden {
	142	+	return nil, Rect{}, false
	143	+	}
	144	+	return sc, c.clientRect(pl), true
	145	+	}
	146	+	}
	147	+	}
	148	+	return nil, Rect{}, false
	149	+	}
	150	+
	151	+	// placePopup places a new or repositioned popup and configures it; a popup
	152	+	// whose parent is not on screen is dismissed.
	153	+	func (c *Core) placePopup(ctx context.Context, v ports.PopupRequest) error {
	154	+	sc, pr, ok := c.windowRect(v.Parent)
	155	+	if !ok {
	156	+	delete(c.popups, v.ID)
	157	+	return c.command(ctx, ports.ClosePopup{ID: v.ID})
	158	+	}
	159	+	o := sc.mon.Output()
	160	+	bounds := Rect{X: o.X - pr.X, Y: o.Y - pr.Y, W: o.W, H: o.H}
	161	+	p := c.popups[v.ID]
	162	+	if p == nil {
	163	+	p = &popupState{id: v.ID, parent: v.Parent}
	164	+	c.popups[v.ID] = p
	165	+	c.popupOrder = append(c.popupOrder, v.ID)
	166	+	}
	167	+	p.grab = v.Grab
	168	+	p.rect = place(v.Positioner, bounds)
	169	+	return c.command(ctx, ports.ConfigurePopup{ID: v.ID, Rect: p.rect, Reposition: v.Reposition, Token: v.Token})
	170	+	}
	171	+
	172	+	// dropPopup forgets a popup and dismisses its children.
	173	+	func (c *Core) dropPopup(ctx context.Context, id WindowID) error {
	174	+	if c.popups[id] == nil {
	175	+	return nil
	176	+	}
	177	+	delete(c.popups, id)
	178	+	c.popupOrder = slices.DeleteFunc(c.popupOrder, func(v WindowID) bool { return v == id })
	179	+	for _, child := range slices.Clone(c.popupOrder) {
	180	+	if p := c.popups[child]; p != nil && p.parent == id {
	181	+	if err := c.command(ctx, ports.ClosePopup{ID: child}); err != nil {
	182	+	return err
	183	+	}
	184	+	if err := c.dropPopup(ctx, child); err != nil {
	185	+	return err
	186	+	}
	187	+	}
	188	+	}
	189	+	if c.pointer == id {
	190	+	c.pointer = 0
	191	+	}
	192	+	return nil
	193	+	}
	194	+
	195	+	// dropPopupsOf dismisses the popups hanging from a window.
	196	+	func (c *Core) dropPopupsOf(ctx context.Context, id WindowID) error {
	197	+	for _, child := range slices.Clone(c.popupOrder) {
	198	+	if p := c.popups[child]; p != nil && p.parent == id {
	199	+	if err := c.command(ctx, ports.ClosePopup{ID: child}); err != nil {
	200	+	return err
	201	+	}
	202	+	if err := c.dropPopup(ctx, child); err != nil {
	203	+	return err
	204	+	}
	205	+	}
	206	+	}
	207	+	return nil
	208	+	}
	209	+
	210	+	// closeHiddenPopups dismisses popups whose window left the screen.
	211	+	func (c *Core) closeHiddenPopups(ctx context.Context) error {
	212	+	for _, id := range slices.Clone(c.popupOrder) {
	213	+	if c.popups[id] == nil {
	214	+	continue
	215	+	}
	216	+	if _, _, ok := c.windowRect(id); !ok {
	217	+	if err := c.command(ctx, ports.ClosePopup{ID: id}); err != nil {
	218	+	return err
	219	+	}
	220	+	if err := c.dropPopup(ctx, id); err != nil {
	221	+	return err
	222	+	}
	223	+	}
	224	+	}
	225	+	return nil
	226	+	}
	227	+
	228	+	// dismissGrabs closes the grabbing popups unless the click hit one of
	229	+	// them: a click outside a menu closes it.
	230	+	func (c *Core) dismissGrabs(ctx context.Context, hit WindowID) error {
	231	+	for _, id := range slices.Clone(c.popupOrder) {
	232	+	p := c.popups[id]
	233	+	if p == nil \|\| !p.grab {
	234	+	continue
	235	+	}
	236	+	// A click on a popup of the same chain keeps it; a click on
	237	+	// anything else, its parent window included, closes it.
	238	+	if c.popups[hit] != nil && (hit == id \|\| c.isAncestor(id, hit) \|\| c.isAncestor(hit, id)) {
	239	+	continue
	240	+	}
	241	+	if err := c.command(ctx, ports.ClosePopup{ID: id}); err != nil {
	242	+	return err
	243	+	}
	244	+	if err := c.dropPopup(ctx, id); err != nil {
	245	+	return err
	246	+	}
	247	+	}
	248	+	return nil
	249	+	}
	250	+
	251	+	// isAncestor reports whether a is a popup ancestor of b.
	252	+	func (c *Core) isAncestor(a, b WindowID) bool {
	253	+	for p := c.popups[b]; p != nil; p = c.popups[p.parent] {
	254	+	if p.parent == a {
	255	+	return true
	256	+	}
	257	+	}
	258	+	return false
	259	+	}
	260	+
	261	+	// grabFocus is the topmost mapped grabbing popup, which takes the keyboard.
	262	+	func (c *Core) grabFocus() WindowID {
	263	+	for i := len(c.popupOrder) - 1; i >= 0; i-- {
	264	+	if p := c.popups[c.popupOrder[i]]; p != nil && p.grab && p.mapped {
	265	+	return p.id
	266	+	}
	267	+	}
	268	+	return 0
	269	+	}
	270	+
	271	+	// popupAt returns the topmost mapped popup under the output-local point.
	272	+	func (c Core) popupAt(sc screen, lx, ly float64) (WindowID, float64, float64) {
	273	+	for i := len(c.popupOrder) - 1; i >= 0; i-- {
	274	+	p := c.popups[c.popupOrder[i]]
	275	+	if p == nil \|\| !p.mapped {
	276	+	continue
	277	+	}
	278	+	s, r, ok := c.windowRect(p.id)
	279	+	if !ok \|\| s != sc {
	280	+	continue
	281	+	}
	282	+	if lx >= float64(r.X) && lx < float64(r.X+r.W) && ly >= float64(r.Y) && ly < float64(r.Y+r.H) {
	283	+	return p.id, lx - float64(r.X), ly - float64(r.Y)
	284	+	}
	285	+	}
	286	+	return 0, 0, 0
	287	+	}
	288	+
	289	+	// scenePopups are the mapped popups on a screen, bottom to top.
	290	+	func (c Core) scenePopups(sc screen) []ports.SceneWindow {
	291	+	var out []ports.SceneWindow
	292	+	for _, id := range c.popupOrder {
	293	+	p := c.popups[id]
	294	+	if p == nil \|\| !p.mapped {
	295	+	continue
	296	+	}
	297	+	if s, r, ok := c.windowRect(id); ok && s == sc {
	298	+	out = append(out, ports.SceneWindow{ID: id, Rect: r, Popup: true})
	299	+	}
	300	+	}
	301	+	return out
	302	+	}

A internal/core/popup_test.go +62 -0

@@ -0,0 +1,62 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"testing"
	5	+
	6	+	"github.com/bnema/nefertty/internal/ports"
	7	+	)
	8	+
	9	+	func TestPlacePopup(t *testing.T) {
	10	+	menu := ports.Positioner{
	11	+	Width: 40, Height: 30,
	12	+	AnchorRect: Rect{X: 10, Y: 10, W: 20, H: 10},
	13	+	Anchor: ports.EdgeBottomRight, Gravity: ports.EdgeBottomRight,
	14	+	}
	15	+	bounds := Rect{X: 0, Y: 0, W: 100, H: 100}
	16	+	for _, tc := range []struct {
	17	+	name string
	18	+	mod func(p *ports.Positioner)
	19	+	bounds Rect
	20	+	want Rect
	21	+	}{
	22	+	{"fits", func(*ports.Positioner) {}, bounds, Rect{X: 30, Y: 20, W: 40, H: 30}},
	23	+	{"no bounds", func(p *ports.Positioner) { p.OffsetX = 500 }, Rect{}, Rect{X: 530, Y: 20, W: 40, H: 30}},
	24	+	{"centre", func(p *ports.Positioner) { p.Anchor, p.Gravity = 0, 0 }, bounds, Rect{X: 0, Y: 0, W: 40, H: 30}},
	25	+	{"flip x", func(p *ports.Positioner) { p.OffsetX = 40; p.Adjust = ports.AdjustFlipX }, Rect{W: 90, H: 100}, Rect{X: 10, Y: 20, W: 40, H: 30}},
	26	+	{"flip y", func(p *ports.Positioner) { p.AnchorRect.Y = 70; p.Adjust = ports.AdjustFlipY }, bounds, Rect{X: 30, Y: 40, W: 40, H: 30}},
	27	+	{"slide", func(p *ports.Positioner) { p.AnchorRect.X = 80; p.Adjust = ports.AdjustSlideX }, bounds, Rect{X: 60, Y: 20, W: 40, H: 30}},
	28	+	{"resize", func(p *ports.Positioner) { p.AnchorRect.X = 80; p.Adjust = ports.AdjustResizeX }, bounds, Rect{X: 100, Y: 20, W: 40, H: 30}},
	29	+	{"resize y", func(p *ports.Positioner) { p.AnchorRect.Y = 70; p.Adjust = ports.AdjustResizeY }, bounds, Rect{X: 30, Y: 80, W: 40, H: 20}},
	30	+	{"none", func(p *ports.Positioner) { p.AnchorRect.X = 80 }, bounds, Rect{X: 100, Y: 20, W: 40, H: 30}},
	31	+	} {
	32	+	p := menu
	33	+	tc.mod(&p)
	34	+	if got := place(p, tc.bounds); got != tc.want {
	35	+	t.Errorf("%s: got %+v want %+v", tc.name, got, tc.want)
	36	+	}
	37	+	}
	38	+	}
	39	+
	40	+	func TestFloatingWindows(t *testing.T) {
	41	+	w := workspace()
	42	+	w.AddWindow(1)
	43	+	w.AddFloating(2, 20, 10)
	44	+	if id, _ := w.Focused(); id != 2 {
	45	+	t.Fatalf("focus %d, want the floating window", id)
	46	+	}
	47	+	l := w.Layout()
	48	+	f := l[len(l)-1]
	49	+	u := w.Usable
	50	+	if f.ID != 2 \|\| !f.Floating \|\| !f.Focused \|\| f.Rect.W != 20 \|\| f.Rect.H != 10 \|\|
	51	+	f.Rect.X != u.X+(u.W-20)/2 \|\| f.Rect.Y != u.Y+(u.H-10)/2 {
	52	+	t.Fatalf("float placement %+v in %+v", f, u)
	53	+	}
	54	+	w.ResizeFloating(2, 500, 500)
	55	+	if r := w.Layout()[1].Rect; r.W != u.W \|\| r.H != u.H {
	56	+	t.Fatalf("clamped %+v", r)
	57	+	}
	58	+	w.RemoveWindow(2)
	59	+	if id, _ := w.Focused(); id != 1 \|\| len(w.Floats) != 0 {
	60	+	t.Fatalf("focus after close %d", id)
	61	+	}
	62	+	}

@@ -0,0 +1,62 @@
	1	+	package core
	2	+
	3	+	import (
	4	+	"testing"
	5	+
	6	+	"github.com/bnema/nefertty/internal/ports"
	7	+	)
	8	+
	9	+	func TestPlacePopup(t *testing.T) {
	10	+	menu := ports.Positioner{
	11	+	Width: 40, Height: 30,
	12	+	AnchorRect: Rect{X: 10, Y: 10, W: 20, H: 10},
	13	+	Anchor: ports.EdgeBottomRight, Gravity: ports.EdgeBottomRight,
	14	+	}
	15	+	bounds := Rect{X: 0, Y: 0, W: 100, H: 100}
	16	+	for _, tc := range []struct {
	17	+	name string
	18	+	mod func(p *ports.Positioner)
	19	+	bounds Rect
	20	+	want Rect
	21	+	}{
	22	+	{"fits", func(*ports.Positioner) {}, bounds, Rect{X: 30, Y: 20, W: 40, H: 30}},
	23	+	{"no bounds", func(p *ports.Positioner) { p.OffsetX = 500 }, Rect{}, Rect{X: 530, Y: 20, W: 40, H: 30}},
	24	+	{"centre", func(p *ports.Positioner) { p.Anchor, p.Gravity = 0, 0 }, bounds, Rect{X: 0, Y: 0, W: 40, H: 30}},
	25	+	{"flip x", func(p *ports.Positioner) { p.OffsetX = 40; p.Adjust = ports.AdjustFlipX }, Rect{W: 90, H: 100}, Rect{X: 10, Y: 20, W: 40, H: 30}},
	26	+	{"flip y", func(p *ports.Positioner) { p.AnchorRect.Y = 70; p.Adjust = ports.AdjustFlipY }, bounds, Rect{X: 30, Y: 40, W: 40, H: 30}},
	27	+	{"slide", func(p *ports.Positioner) { p.AnchorRect.X = 80; p.Adjust = ports.AdjustSlideX }, bounds, Rect{X: 60, Y: 20, W: 40, H: 30}},
	28	+	{"resize", func(p *ports.Positioner) { p.AnchorRect.X = 80; p.Adjust = ports.AdjustResizeX }, bounds, Rect{X: 100, Y: 20, W: 40, H: 30}},
	29	+	{"resize y", func(p *ports.Positioner) { p.AnchorRect.Y = 70; p.Adjust = ports.AdjustResizeY }, bounds, Rect{X: 30, Y: 80, W: 40, H: 20}},
	30	+	{"none", func(p *ports.Positioner) { p.AnchorRect.X = 80 }, bounds, Rect{X: 100, Y: 20, W: 40, H: 30}},
	31	+	} {
	32	+	p := menu
	33	+	tc.mod(&p)
	34	+	if got := place(p, tc.bounds); got != tc.want {
	35	+	t.Errorf("%s: got %+v want %+v", tc.name, got, tc.want)
	36	+	}
	37	+	}
	38	+	}
	39	+
	40	+	func TestFloatingWindows(t *testing.T) {
	41	+	w := workspace()
	42	+	w.AddWindow(1)
	43	+	w.AddFloating(2, 20, 10)
	44	+	if id, _ := w.Focused(); id != 2 {
	45	+	t.Fatalf("focus %d, want the floating window", id)
	46	+	}
	47	+	l := w.Layout()
	48	+	f := l[len(l)-1]
	49	+	u := w.Usable
	50	+	if f.ID != 2 \|\| !f.Floating \|\| !f.Focused \|\| f.Rect.W != 20 \|\| f.Rect.H != 10 \|\|
	51	+	f.Rect.X != u.X+(u.W-20)/2 \|\| f.Rect.Y != u.Y+(u.H-10)/2 {
	52	+	t.Fatalf("float placement %+v in %+v", f, u)
	53	+	}
	54	+	w.ResizeFloating(2, 500, 500)
	55	+	if r := w.Layout()[1].Rect; r.W != u.W \|\| r.H != u.H {
	56	+	t.Fatalf("clamped %+v", r)
	57	+	}
	58	+	w.RemoveWindow(2)
	59	+	if id, _ := w.Focused(); id != 1 \|\| len(w.Floats) != 0 {
	60	+	t.Fatalf("focus after close %d", id)
	61	+	}
	62	+	}

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


@@ -303,6 +303,7 @@ func (c Core) settings(m Monitor) {
303	303		m.SetMaxColumns(c.cfg.Layout.MaxColumns)
304	304		m.SetPresets(c.presets)
305	305		m.SetGaps(c.cfg.Layout.Gaps)
	306	+	m.SetBorder(c.cfg.Border.Width)
306	307		}
307	308
308	309		// neighbor returns the screen index left (-1) or right (+1) of the focused


@@ -303,6 +303,7 @@ func (c Core) settings(m Monitor) {
303	m.SetMaxColumns(c.cfg.Layout.MaxColumns)	303		m.SetMaxColumns(c.cfg.Layout.MaxColumns)
304	m.SetPresets(c.presets)	304		m.SetPresets(c.presets)
305	m.SetGaps(c.cfg.Layout.Gaps)	305		m.SetGaps(c.cfg.Layout.Gaps)
		306	+	m.SetBorder(c.cfg.Border.Width)
306	}	307		}
307		308
308	// neighbor returns the screen index left (-1) or right (+1) of the focused	309		// neighbor returns the screen index left (-1) or right (+1) of the focused

M internal/core/state.go +3 -5


@@ -38,11 +38,9 @@ func (c *Core) state() ports.State {
38	38		st.Outputs = append(st.Outputs, o)
39	39		for _, w := range m.all() {
40	40		n := indexOf(m.Workspaces, w) + 1
41		-	for _, col := range w.Columns {
42		-	for _, id := range col.Windows {
43		-	info := c.clients[id]
44		-	st.Windows = append(st.Windows, ports.WindowState{ID: id, AppID: info.AppID, PID: info.PID, Output: s.name(), Workspace: n, Visible: w == cur})
45		-	}
	41	+	for _, id := range w.windows() {
	42	+	info := c.clients[id]
	43	+	st.Windows = append(st.Windows, ports.WindowState{ID: id, AppID: info.AppID, PID: info.PID, Output: s.name(), Workspace: n, Visible: w == cur})
46	44		}
47	45		}
48	46		}

 		st.Outputs = append(st.Outputs, o)
 		for _, w := range m.all() {
 			n := indexOf(m.Workspaces, w) + 1
-			for _, col := range w.Columns {
+			for _, id := range w.windows() {
-				for _, id := range col.Windows {
+				info := c.clients[id]
-					info := c.clients[id]
+				st.Windows = append(st.Windows, ports.WindowState{ID: id, AppID: info.AppID, PID: info.PID, Output: s.name(), Workspace: n, Visible: w == cur})
-					st.Windows = append(st.Windows, ports.WindowState{ID: id, AppID: info.AppID, PID: info.PID, Output: s.name(), Workspace: n, Visible: w == cur})
-				}
 			}
 		}
 	}

M internal/ports/messages.go +88 -1


@@ -13,6 +13,11 @@ type WindowMapped struct {
13	13		Slot string
14	14		// PID is the client process, 0 when unknown.
15	15		PID int
	16	+	// Floating windows are dialogs (a parent) or fixed-size windows such
	17	+	// as splash screens: core shows them over the columns at their own
	18	+	// size, Width×Height logical (0 when unknown).
	19	+	Floating bool
	20	+	Width, Height int
16	21		}
17	22
18	23		// SlotEnv is the environment variable nefertty sets on processes it spawns

@@ -42,6 +47,68 @@ type WindowAppID struct {
42	47
43	48		func (WindowAppID) clientEvent() {}
44	49
	50	+	// WindowResized carries wayland → core the new size of a floating window.
	51	+	type WindowResized struct {
	52	+	ID WindowID
	53	+	Width, Height int
	54	+	}
	55	+
	56	+	func (WindowResized) clientEvent() {}
	57	+
	58	+	// Popup anchors and gravities, as xdg_positioner values.
	59	+	const (
	60	+	EdgeNone uint32 = iota
	61	+	EdgeTop
	62	+	EdgeBottom
	63	+	EdgeLeft
	64	+	EdgeRight
	65	+	EdgeTopLeft
	66	+	EdgeBottomLeft
	67	+	EdgeTopRight
	68	+	EdgeBottomRight
	69	+	)
	70	+
	71	+	// Popup constraint adjustments, as xdg_positioner values.
	72	+	const (
	73	+	AdjustSlideX uint32 = 1 << iota
	74	+	AdjustSlideY
	75	+	AdjustFlipX
	76	+	AdjustFlipY
	77	+	AdjustResizeX
	78	+	AdjustResizeY
	79	+	)
	80	+
	81	+	// Positioner places a popup relative to its parent's window geometry:
	82	+	// the Anchor point of AnchorRect, moved by Offset, with the popup extending
	83	+	// towards Gravity. Adjust says how core may move it to stay on screen.
	84	+	type Positioner struct {
	85	+	Width, Height int
	86	+	AnchorRect Rect
	87	+	Anchor, Gravity uint32
	88	+	OffsetX, OffsetY int
	89	+	Adjust uint32
	90	+	}
	91	+
	92	+	// PopupRequest carries wayland → core a popup to place (xdg_popup), on
	93	+	// its first commit and on reposition (Reposition, with the client's
	94	+	// Token). Parent is a window or popup. Grab popups take the keyboard and
	95	+	// close on a click elsewhere.
	96	+	type PopupRequest struct {
	97	+	ID, Parent WindowID
	98	+	Positioner Positioner
	99	+	Grab bool
	100	+	Reposition bool
	101	+	Token uint32
	102	+	}
	103	+
	104	+	func (PopupRequest) clientEvent() {}
	105	+
	106	+	// PopupMapped carries wayland → core a placed popup that now has content.
	107	+	// It ends with WindowUnmapped.
	108	+	type PopupMapped struct{ ID WindowID }
	109	+
	110	+	func (PopupMapped) clientEvent() {}
	111	+
45	112		// Layer is a wlr-layer-shell stacking layer.
46	113		type Layer uint32
47	114

@@ -228,7 +295,9 @@ type ConfigureWindow struct {
228	295		ID WindowID
229	296		Width, Height int
230	297		Fullscreen, Activated bool
231		-	Output string
	298	+	// Floating windows are not tiled: no tiled states.
	299	+	Floating bool
	300	+	Output string
232	301		}
233	302
234	303		func (ConfigureWindow) clientCommand() {}

@@ -304,6 +373,22 @@ type FocusWindow struct{ ID WindowID }
304	373
305	374		func (FocusWindow) clientCommand() {}
306	375
	376	+	// ConfigurePopup carries core → wayland a popup's place, relative to its
	377	+	// parent's window geometry. Reposition answers a reposition request.
	378	+	type ConfigurePopup struct {
	379	+	ID WindowID
	380	+	Rect Rect
	381	+	Reposition bool
	382	+	Token uint32
	383	+	}
	384	+
	385	+	func (ConfigurePopup) clientCommand() {}
	386	+
	387	+	// ClosePopup carries core → wayland a popup to dismiss (popup_done).
	388	+	type ClosePopup struct{ ID WindowID }
	389	+
	390	+	func (ClosePopup) clientCommand() {}
	391	+
307	392		// PointerFocus changes the pointer surface; ID 0 clears focus. Coordinates are surface-local.
308	393		type PointerFocus struct {
309	394		ID WindowID

@@ -509,6 +594,8 @@ type SceneWindow struct {
509	594		Focused, Fullscreen, Hidden bool
510	595		// Borderless windows fill the usable width alone; no border is drawn.
511	596		Borderless bool
	597	+	// Popups are drawn from their content only: no border, no background.
	598	+	Popup bool
512	599		}
513	600
514	601		// State carries core → state publisher a snapshot of what is on screen, for


@@ -13,6 +13,11 @@ type WindowMapped struct {
13		Slot string	13		Slot string
14		// PID is the client process, 0 when unknown.	14		// PID is the client process, 0 when unknown.
15		PID int	15		PID int
			16	+	// Floating windows are dialogs (a parent) or fixed-size windows such
			17	+	// as splash screens: core shows them over the columns at their own
			18	+	// size, Width×Height logical (0 when unknown).
			19	+	Floating bool
			20	+	Width, Height int
16		}	21		}
17			22
18		// SlotEnv is the environment variable nefertty sets on processes it spawns	23		// SlotEnv is the environment variable nefertty sets on processes it spawns

@@ -42,6 +47,68 @@ type WindowAppID struct {
42			47
43		func (WindowAppID) clientEvent() {}	48		func (WindowAppID) clientEvent() {}
44			49
			50	+	// WindowResized carries wayland → core the new size of a floating window.
			51	+	type WindowResized struct {
			52	+	ID WindowID
			53	+	Width, Height int
			54	+	}
			55	+
			56	+	func (WindowResized) clientEvent() {}
			57	+
			58	+	// Popup anchors and gravities, as xdg_positioner values.
			59	+	const (
			60	+	EdgeNone uint32 = iota
			61	+	EdgeTop
			62	+	EdgeBottom
			63	+	EdgeLeft
			64	+	EdgeRight
			65	+	EdgeTopLeft
			66	+	EdgeBottomLeft
			67	+	EdgeTopRight
			68	+	EdgeBottomRight
			69	+	)
			70	+
			71	+	// Popup constraint adjustments, as xdg_positioner values.
			72	+	const (
			73	+	AdjustSlideX uint32 = 1 << iota
			74	+	AdjustSlideY
			75	+	AdjustFlipX
			76	+	AdjustFlipY
			77	+	AdjustResizeX
			78	+	AdjustResizeY
			79	+	)
			80	+
			81	+	// Positioner places a popup relative to its parent's window geometry:
			82	+	// the Anchor point of AnchorRect, moved by Offset, with the popup extending
			83	+	// towards Gravity. Adjust says how core may move it to stay on screen.
			84	+	type Positioner struct {
			85	+	Width, Height int
			86	+	AnchorRect Rect
			87	+	Anchor, Gravity uint32
			88	+	OffsetX, OffsetY int
			89	+	Adjust uint32
			90	+	}
			91	+
			92	+	// PopupRequest carries wayland → core a popup to place (xdg_popup), on
			93	+	// its first commit and on reposition (Reposition, with the client's
			94	+	// Token). Parent is a window or popup. Grab popups take the keyboard and
			95	+	// close on a click elsewhere.
			96	+	type PopupRequest struct {
			97	+	ID, Parent WindowID
			98	+	Positioner Positioner
			99	+	Grab bool
			100	+	Reposition bool
			101	+	Token uint32
			102	+	}
			103	+
			104	+	func (PopupRequest) clientEvent() {}
			105	+
			106	+	// PopupMapped carries wayland → core a placed popup that now has content.
			107	+	// It ends with WindowUnmapped.
			108	+	type PopupMapped struct{ ID WindowID }
			109	+
			110	+	func (PopupMapped) clientEvent() {}
			111	+
45		// Layer is a wlr-layer-shell stacking layer.	112		// Layer is a wlr-layer-shell stacking layer.
46		type Layer uint32	113		type Layer uint32
47			114

@@ -228,7 +295,9 @@ type ConfigureWindow struct {
228		ID WindowID	295		ID WindowID
229		Width, Height int	296		Width, Height int
230		Fullscreen, Activated bool	297		Fullscreen, Activated bool
231	-	Output string	298	+	// Floating windows are not tiled: no tiled states.
			299	+	Floating bool
			300	+	Output string
232		}	301		}
233			302
234		func (ConfigureWindow) clientCommand() {}	303		func (ConfigureWindow) clientCommand() {}

@@ -304,6 +373,22 @@ type FocusWindow struct{ ID WindowID }
304			373
305		func (FocusWindow) clientCommand() {}	374		func (FocusWindow) clientCommand() {}
306			375
			376	+	// ConfigurePopup carries core → wayland a popup's place, relative to its
			377	+	// parent's window geometry. Reposition answers a reposition request.
			378	+	type ConfigurePopup struct {
			379	+	ID WindowID
			380	+	Rect Rect
			381	+	Reposition bool
			382	+	Token uint32
			383	+	}
			384	+
			385	+	func (ConfigurePopup) clientCommand() {}
			386	+
			387	+	// ClosePopup carries core → wayland a popup to dismiss (popup_done).
			388	+	type ClosePopup struct{ ID WindowID }
			389	+
			390	+	func (ClosePopup) clientCommand() {}
			391	+
307		// PointerFocus changes the pointer surface; ID 0 clears focus. Coordinates are surface-local.	392		// PointerFocus changes the pointer surface; ID 0 clears focus. Coordinates are surface-local.
308		type PointerFocus struct {	393		type PointerFocus struct {
309		ID WindowID	394		ID WindowID

@@ -509,6 +594,8 @@ type SceneWindow struct {
509		Focused, Fullscreen, Hidden bool	594		Focused, Fullscreen, Hidden bool
510		// Borderless windows fill the usable width alone; no border is drawn.	595		// Borderless windows fill the usable width alone; no border is drawn.
511		Borderless bool	596		Borderless bool
			597	+	// Popups are drawn from their content only: no border, no background.
			598	+	Popup bool
512		}	599		}
513			600
514		// State carries core → state publisher a snapshot of what is on screen, for	601		// State carries core → state publisher a snapshot of what is on screen, for