merge: viewporter and fractional-scale bindings

commit: 4df41d057732e0d6d7b0a8f03eaf27e70ea5305f
author: brice · 28d ago · 2026-09-24 14:25 UTC
merge of: 8628cd3 + e5508a6 · diff against the first parent
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

5 files · +583 -0

A protocol/fractionalscale/fractionalscale.go +145 -0

@@ -0,0 +1,145 @@
	1	+	// Code generated by wlgen; DO NOT EDIT.
	2	+	package fractionalscale
	3	+
	4	+	import (
	5	+	"fmt"
	6	+	wayland "github.com/bnema/purego-libwayland/protocol/wayland"
	7	+	"github.com/bnema/purego-libwayland/server"
	8	+	)
	9	+
	10	+	var WpFractionalScaleManagerV1Interface *server.Interface
	11	+	var WpFractionalScaleV1Interface *server.Interface
	12	+
	13	+	func init() {
	14	+	WpFractionalScaleManagerV1Interface = &server.Interface{Name: "wp_fractional_scale_manager_v1", Version: 1}
	15	+	WpFractionalScaleV1Interface = &server.Interface{Name: "wp_fractional_scale_v1", Version: 1}
	16	+	WpFractionalScaleManagerV1Interface.Requests = []server.Message{
	17	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	18	+	{Name: "get_fractional_scale", Signature: "no", Types: []*server.Interface{WpFractionalScaleV1Interface, wayland.SurfaceInterface}},
	19	+	}
	20	+	WpFractionalScaleManagerV1Interface.Events = []server.Message{}
	21	+	WpFractionalScaleV1Interface.Requests = []server.Message{
	22	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	23	+	}
	24	+	WpFractionalScaleV1Interface.Events = []server.Message{
	25	+	{Name: "preferred_scale", Signature: "u", Types: []*server.Interface{nil}},
	26	+	}
	27	+	if err := server.NewInterfaces(WpFractionalScaleManagerV1Interface, WpFractionalScaleV1Interface); err != nil {
	28	+	panic(err)
	29	+	}
	30	+	}
	31	+
	32	+	// WpFractionalScaleManagerV1 fractional surface scale information.
	33	+	type WpFractionalScaleManagerV1 struct{ *server.Resource }
	34	+
	35	+	func WrapWpFractionalScaleManagerV1(r server.Resource) WpFractionalScaleManagerV1 {
	36	+	if r == nil {
	37	+	return nil
	38	+	}
	39	+	return &WpFractionalScaleManagerV1{r}
	40	+	}
	41	+
	42	+	const WpFractionalScaleManagerV1RequestDestroy uint32 = 0
	43	+	const WpFractionalScaleManagerV1RequestGetFractionalScale uint32 = 1
	44	+
	45	+	// WpFractionalScaleManagerV1Error .
	46	+	type WpFractionalScaleManagerV1Error uint32
	47	+
	48	+	const (
	49	+	WpFractionalScaleManagerV1ErrorFractionalScaleExists WpFractionalScaleManagerV1Error = 0
	50	+	)
	51	+
	52	+	// WpFractionalScaleManagerV1Handler handles wp_fractional_scale_manager_v1 requests.
	53	+	type WpFractionalScaleManagerV1Handler interface {
	54	+	Destroy(self *WpFractionalScaleManagerV1)
	55	+	GetFractionalScale(self WpFractionalScaleManagerV1, id uint32, surface wayland.Surface)
	56	+	}
	57	+
	58	+	func NewWpFractionalScaleManagerV1(c server.Client, version int32, id uint32, h WpFractionalScaleManagerV1Handler) (*WpFractionalScaleManagerV1, error) {
	59	+	if h == nil {
	60	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_fractional_scale_manager_v1")
	61	+	}
	62	+	var self *WpFractionalScaleManagerV1
	63	+	r, err := c.CreateResource(WpFractionalScaleManagerV1Interface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	64	+	switch opcode {
	65	+	case 0:
	66	+	h.Destroy(self)
	67	+	self.Destroy()
	68	+	case 1:
	69	+	h.GetFractionalScale(self, args[0].NewID(), wayland.WrapSurface(args[1].Resource()))
	70	+	}
	71	+	})
	72	+	if err != nil {
	73	+	return nil, err
	74	+	}
	75	+	self = WrapWpFractionalScaleManagerV1(r)
	76	+	r.Data = self
	77	+	return self, nil
	78	+	}
	79	+	func NewWpFractionalScaleManagerV1Global(d *server.Display, version int32, bind server.BindFunc) error {
	80	+	return d.CreateGlobal(WpFractionalScaleManagerV1Interface, version, bind)
	81	+	}
	82	+
	83	+	// WpFractionalScaleV1 fractional scale interface to a wl_surface.
	84	+	type WpFractionalScaleV1 struct{ *server.Resource }
	85	+
	86	+	func WrapWpFractionalScaleV1(r server.Resource) WpFractionalScaleV1 {
	87	+	if r == nil {
	88	+	return nil
	89	+	}
	90	+	return &WpFractionalScaleV1{r}
	91	+	}
	92	+
	93	+	const WpFractionalScaleV1RequestDestroy uint32 = 0
	94	+	const WpFractionalScaleV1EventPreferredScale uint32 = 0
	95	+
	96	+	// WpFractionalScaleV1Handler handles wp_fractional_scale_v1 requests.
	97	+	type WpFractionalScaleV1Handler interface {
	98	+	Destroy(self *WpFractionalScaleV1)
	99	+	}
	100	+
	101	+	func NewWpFractionalScaleV1(c server.Client, version int32, id uint32, h WpFractionalScaleV1Handler) (*WpFractionalScaleV1, error) {
	102	+	if h == nil {
	103	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_fractional_scale_v1")
	104	+	}
	105	+	var self *WpFractionalScaleV1
	106	+	r, err := c.CreateResource(WpFractionalScaleV1Interface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	107	+	switch opcode {
	108	+	case 0:
	109	+	h.Destroy(self)
	110	+	self.Destroy()
	111	+	}
	112	+	})
	113	+	if err != nil {
	114	+	return nil, err
	115	+	}
	116	+	self = WrapWpFractionalScaleV1(r)
	117	+	r.Data = self
	118	+	return self, nil
	119	+	}
	120	+
	121	+	// SendPreferredScale notify of new preferred scale.
	122	+	func (self *WpFractionalScaleV1) SendPreferredScale(scale uint32) {
	123	+	self.PostEvent(WpFractionalScaleV1EventPreferredScale, server.Uint(scale))
	124	+	}
	125	+	func NewWpFractionalScaleV1Global(d *server.Display, version int32, bind server.BindFunc) error {
	126	+	return d.CreateGlobal(WpFractionalScaleV1Interface, version, bind)
	127	+	}
	128	+	func resourceOf(v interface{ GetResource() server.Resource }) server.Resource {
	129	+	if v == nil {
	130	+	return nil
	131	+	}
	132	+	return v.GetResource()
	133	+	}
	134	+	func (self WpFractionalScaleManagerV1) GetResource() server.Resource {
	135	+	if self == nil {
	136	+	return nil
	137	+	}
	138	+	return self.Resource
	139	+	}
	140	+	func (self WpFractionalScaleV1) GetResource() server.Resource {
	141	+	if self == nil {
	142	+	return nil
	143	+	}
	144	+	return self.Resource
	145	+	}

@@ -0,0 +1,145 @@
	1	+	// Code generated by wlgen; DO NOT EDIT.
	2	+	package fractionalscale
	3	+
	4	+	import (
	5	+	"fmt"
	6	+	wayland "github.com/bnema/purego-libwayland/protocol/wayland"
	7	+	"github.com/bnema/purego-libwayland/server"
	8	+	)
	9	+
	10	+	var WpFractionalScaleManagerV1Interface *server.Interface
	11	+	var WpFractionalScaleV1Interface *server.Interface
	12	+
	13	+	func init() {
	14	+	WpFractionalScaleManagerV1Interface = &server.Interface{Name: "wp_fractional_scale_manager_v1", Version: 1}
	15	+	WpFractionalScaleV1Interface = &server.Interface{Name: "wp_fractional_scale_v1", Version: 1}
	16	+	WpFractionalScaleManagerV1Interface.Requests = []server.Message{
	17	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	18	+	{Name: "get_fractional_scale", Signature: "no", Types: []*server.Interface{WpFractionalScaleV1Interface, wayland.SurfaceInterface}},
	19	+	}
	20	+	WpFractionalScaleManagerV1Interface.Events = []server.Message{}
	21	+	WpFractionalScaleV1Interface.Requests = []server.Message{
	22	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	23	+	}
	24	+	WpFractionalScaleV1Interface.Events = []server.Message{
	25	+	{Name: "preferred_scale", Signature: "u", Types: []*server.Interface{nil}},
	26	+	}
	27	+	if err := server.NewInterfaces(WpFractionalScaleManagerV1Interface, WpFractionalScaleV1Interface); err != nil {
	28	+	panic(err)
	29	+	}
	30	+	}
	31	+
	32	+	// WpFractionalScaleManagerV1 fractional surface scale information.
	33	+	type WpFractionalScaleManagerV1 struct{ *server.Resource }
	34	+
	35	+	func WrapWpFractionalScaleManagerV1(r server.Resource) WpFractionalScaleManagerV1 {
	36	+	if r == nil {
	37	+	return nil
	38	+	}
	39	+	return &WpFractionalScaleManagerV1{r}
	40	+	}
	41	+
	42	+	const WpFractionalScaleManagerV1RequestDestroy uint32 = 0
	43	+	const WpFractionalScaleManagerV1RequestGetFractionalScale uint32 = 1
	44	+
	45	+	// WpFractionalScaleManagerV1Error .
	46	+	type WpFractionalScaleManagerV1Error uint32
	47	+
	48	+	const (
	49	+	WpFractionalScaleManagerV1ErrorFractionalScaleExists WpFractionalScaleManagerV1Error = 0
	50	+	)
	51	+
	52	+	// WpFractionalScaleManagerV1Handler handles wp_fractional_scale_manager_v1 requests.
	53	+	type WpFractionalScaleManagerV1Handler interface {
	54	+	Destroy(self *WpFractionalScaleManagerV1)
	55	+	GetFractionalScale(self WpFractionalScaleManagerV1, id uint32, surface wayland.Surface)
	56	+	}
	57	+
	58	+	func NewWpFractionalScaleManagerV1(c server.Client, version int32, id uint32, h WpFractionalScaleManagerV1Handler) (*WpFractionalScaleManagerV1, error) {
	59	+	if h == nil {
	60	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_fractional_scale_manager_v1")
	61	+	}
	62	+	var self *WpFractionalScaleManagerV1
	63	+	r, err := c.CreateResource(WpFractionalScaleManagerV1Interface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	64	+	switch opcode {
	65	+	case 0:
	66	+	h.Destroy(self)
	67	+	self.Destroy()
	68	+	case 1:
	69	+	h.GetFractionalScale(self, args[0].NewID(), wayland.WrapSurface(args[1].Resource()))
	70	+	}
	71	+	})
	72	+	if err != nil {
	73	+	return nil, err
	74	+	}
	75	+	self = WrapWpFractionalScaleManagerV1(r)
	76	+	r.Data = self
	77	+	return self, nil
	78	+	}
	79	+	func NewWpFractionalScaleManagerV1Global(d *server.Display, version int32, bind server.BindFunc) error {
	80	+	return d.CreateGlobal(WpFractionalScaleManagerV1Interface, version, bind)
	81	+	}
	82	+
	83	+	// WpFractionalScaleV1 fractional scale interface to a wl_surface.
	84	+	type WpFractionalScaleV1 struct{ *server.Resource }
	85	+
	86	+	func WrapWpFractionalScaleV1(r server.Resource) WpFractionalScaleV1 {
	87	+	if r == nil {
	88	+	return nil
	89	+	}
	90	+	return &WpFractionalScaleV1{r}
	91	+	}
	92	+
	93	+	const WpFractionalScaleV1RequestDestroy uint32 = 0
	94	+	const WpFractionalScaleV1EventPreferredScale uint32 = 0
	95	+
	96	+	// WpFractionalScaleV1Handler handles wp_fractional_scale_v1 requests.
	97	+	type WpFractionalScaleV1Handler interface {
	98	+	Destroy(self *WpFractionalScaleV1)
	99	+	}
	100	+
	101	+	func NewWpFractionalScaleV1(c server.Client, version int32, id uint32, h WpFractionalScaleV1Handler) (*WpFractionalScaleV1, error) {
	102	+	if h == nil {
	103	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_fractional_scale_v1")
	104	+	}
	105	+	var self *WpFractionalScaleV1
	106	+	r, err := c.CreateResource(WpFractionalScaleV1Interface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	107	+	switch opcode {
	108	+	case 0:
	109	+	h.Destroy(self)
	110	+	self.Destroy()
	111	+	}
	112	+	})
	113	+	if err != nil {
	114	+	return nil, err
	115	+	}
	116	+	self = WrapWpFractionalScaleV1(r)
	117	+	r.Data = self
	118	+	return self, nil
	119	+	}
	120	+
	121	+	// SendPreferredScale notify of new preferred scale.
	122	+	func (self *WpFractionalScaleV1) SendPreferredScale(scale uint32) {
	123	+	self.PostEvent(WpFractionalScaleV1EventPreferredScale, server.Uint(scale))
	124	+	}
	125	+	func NewWpFractionalScaleV1Global(d *server.Display, version int32, bind server.BindFunc) error {
	126	+	return d.CreateGlobal(WpFractionalScaleV1Interface, version, bind)
	127	+	}
	128	+	func resourceOf(v interface{ GetResource() server.Resource }) server.Resource {
	129	+	if v == nil {
	130	+	return nil
	131	+	}
	132	+	return v.GetResource()
	133	+	}
	134	+	func (self WpFractionalScaleManagerV1) GetResource() server.Resource {
	135	+	if self == nil {
	136	+	return nil
	137	+	}
	138	+	return self.Resource
	139	+	}
	140	+	func (self WpFractionalScaleV1) GetResource() server.Resource {
	141	+	if self == nil {
	142	+	return nil
	143	+	}
	144	+	return self.Resource
	145	+	}

M protocol/gen.go +2 -0


@@ -6,3 +6,5 @@ package protocol
6	6		//go:generate go run ../cmd/wlgen -package wlrlayershell -out wlrlayershell/wlrlayershell.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/wlr-layer-shell-unstable-v1.xml
7	7		//go:generate go run ../cmd/wlgen -package xdgoutput -out xdgoutput/xdgoutput.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/xdg-output-unstable-v1.xml
8	8		//go:generate go run ../cmd/wlgen -package xdgdecoration -out xdgdecoration/xdgdecoration.go -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/xdg-decoration-unstable-v1.xml
	9	+	//go:generate go run ../cmd/wlgen -package viewporter -out viewporter/viewporter.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/viewporter.xml
	10	+	//go:generate go run ../cmd/wlgen -package fractionalscale -out fractionalscale/fractionalscale.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/fractional-scale-v1.xml


@@ -6,3 +6,5 @@ package protocol
6	//go:generate go run ../cmd/wlgen -package wlrlayershell -out wlrlayershell/wlrlayershell.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/wlr-layer-shell-unstable-v1.xml	6		//go:generate go run ../cmd/wlgen -package wlrlayershell -out wlrlayershell/wlrlayershell.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/wlr-layer-shell-unstable-v1.xml
7	//go:generate go run ../cmd/wlgen -package xdgoutput -out xdgoutput/xdgoutput.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/xdg-output-unstable-v1.xml	7		//go:generate go run ../cmd/wlgen -package xdgoutput -out xdgoutput/xdgoutput.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/xdg-output-unstable-v1.xml
8	//go:generate go run ../cmd/wlgen -package xdgdecoration -out xdgdecoration/xdgdecoration.go -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/xdg-decoration-unstable-v1.xml	8		//go:generate go run ../cmd/wlgen -package xdgdecoration -out xdgdecoration/xdgdecoration.go -import xdgshell=github.com/bnema/purego-libwayland/protocol/xdgshell -import-xml xdgshell=../protocols/xdg-shell.xml ../protocols/xdg-decoration-unstable-v1.xml
		9	+	//go:generate go run ../cmd/wlgen -package viewporter -out viewporter/viewporter.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/viewporter.xml
		10	+	//go:generate go run ../cmd/wlgen -package fractionalscale -out fractionalscale/fractionalscale.go -import wayland=github.com/bnema/purego-libwayland/protocol/wayland -import-xml wayland=../protocols/wayland.xml ../protocols/fractional-scale-v1.xml

A protocol/viewporter/viewporter.go +157 -0

@@ -0,0 +1,157 @@
	1	+	// Code generated by wlgen; DO NOT EDIT.
	2	+	package viewporter
	3	+
	4	+	import (
	5	+	"fmt"
	6	+	wayland "github.com/bnema/purego-libwayland/protocol/wayland"
	7	+	"github.com/bnema/purego-libwayland/server"
	8	+	)
	9	+
	10	+	var WpViewporterInterface *server.Interface
	11	+	var WpViewportInterface *server.Interface
	12	+
	13	+	func init() {
	14	+	WpViewporterInterface = &server.Interface{Name: "wp_viewporter", Version: 1}
	15	+	WpViewportInterface = &server.Interface{Name: "wp_viewport", Version: 1}
	16	+	WpViewporterInterface.Requests = []server.Message{
	17	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	18	+	{Name: "get_viewport", Signature: "no", Types: []*server.Interface{WpViewportInterface, wayland.SurfaceInterface}},
	19	+	}
	20	+	WpViewporterInterface.Events = []server.Message{}
	21	+	WpViewportInterface.Requests = []server.Message{
	22	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	23	+	{Name: "set_source", Signature: "ffff", Types: []*server.Interface{nil, nil, nil, nil}},
	24	+	{Name: "set_destination", Signature: "ii", Types: []*server.Interface{nil, nil}},
	25	+	}
	26	+	WpViewportInterface.Events = []server.Message{}
	27	+	if err := server.NewInterfaces(WpViewporterInterface, WpViewportInterface); err != nil {
	28	+	panic(err)
	29	+	}
	30	+	}
	31	+
	32	+	// WpViewporter surface cropping and scaling.
	33	+	type WpViewporter struct{ *server.Resource }
	34	+
	35	+	func WrapWpViewporter(r server.Resource) WpViewporter {
	36	+	if r == nil {
	37	+	return nil
	38	+	}
	39	+	return &WpViewporter{r}
	40	+	}
	41	+
	42	+	const WpViewporterRequestDestroy uint32 = 0
	43	+	const WpViewporterRequestGetViewport uint32 = 1
	44	+
	45	+	// WpViewporterError .
	46	+	type WpViewporterError uint32
	47	+
	48	+	const (
	49	+	WpViewporterErrorViewportExists WpViewporterError = 0
	50	+	)
	51	+
	52	+	// WpViewporterHandler handles wp_viewporter requests.
	53	+	type WpViewporterHandler interface {
	54	+	Destroy(self *WpViewporter)
	55	+	GetViewport(self WpViewporter, id uint32, surface wayland.Surface)
	56	+	}
	57	+
	58	+	func NewWpViewporter(c server.Client, version int32, id uint32, h WpViewporterHandler) (*WpViewporter, error) {
	59	+	if h == nil {
	60	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_viewporter")
	61	+	}
	62	+	var self *WpViewporter
	63	+	r, err := c.CreateResource(WpViewporterInterface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	64	+	switch opcode {
	65	+	case 0:
	66	+	h.Destroy(self)
	67	+	self.Destroy()
	68	+	case 1:
	69	+	h.GetViewport(self, args[0].NewID(), wayland.WrapSurface(args[1].Resource()))
	70	+	}
	71	+	})
	72	+	if err != nil {
	73	+	return nil, err
	74	+	}
	75	+	self = WrapWpViewporter(r)
	76	+	r.Data = self
	77	+	return self, nil
	78	+	}
	79	+	func NewWpViewporterGlobal(d *server.Display, version int32, bind server.BindFunc) error {
	80	+	return d.CreateGlobal(WpViewporterInterface, version, bind)
	81	+	}
	82	+
	83	+	// WpViewport crop and scale interface to a wl_surface.
	84	+	type WpViewport struct{ *server.Resource }
	85	+
	86	+	func WrapWpViewport(r server.Resource) WpViewport {
	87	+	if r == nil {
	88	+	return nil
	89	+	}
	90	+	return &WpViewport{r}
	91	+	}
	92	+
	93	+	const WpViewportRequestDestroy uint32 = 0
	94	+	const WpViewportRequestSetSource uint32 = 1
	95	+	const WpViewportRequestSetDestination uint32 = 2
	96	+
	97	+	// WpViewportError .
	98	+	type WpViewportError uint32
	99	+
	100	+	const (
	101	+	WpViewportErrorBadValue WpViewportError = 0
	102	+	WpViewportErrorBadSize WpViewportError = 1
	103	+	WpViewportErrorOutOfBuffer WpViewportError = 2
	104	+	WpViewportErrorNoSurface WpViewportError = 3
	105	+	)
	106	+
	107	+	// WpViewportHandler handles wp_viewport requests.
	108	+	type WpViewportHandler interface {
	109	+	Destroy(self *WpViewport)
	110	+	SetSource(self *WpViewport, x server.Fixed, y server.Fixed, width server.Fixed, height server.Fixed)
	111	+	SetDestination(self *WpViewport, width int32, height int32)
	112	+	}
	113	+
	114	+	func NewWpViewport(c server.Client, version int32, id uint32, h WpViewportHandler) (*WpViewport, error) {
	115	+	if h == nil {
	116	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_viewport")
	117	+	}
	118	+	var self *WpViewport
	119	+	r, err := c.CreateResource(WpViewportInterface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	120	+	switch opcode {
	121	+	case 0:
	122	+	h.Destroy(self)
	123	+	self.Destroy()
	124	+	case 1:
	125	+	h.SetSource(self, args[0].Fixed(), args[1].Fixed(), args[2].Fixed(), args[3].Fixed())
	126	+	case 2:
	127	+	h.SetDestination(self, args[0].Int(), args[1].Int())
	128	+	}
	129	+	})
	130	+	if err != nil {
	131	+	return nil, err
	132	+	}
	133	+	self = WrapWpViewport(r)
	134	+	r.Data = self
	135	+	return self, nil
	136	+	}
	137	+	func NewWpViewportGlobal(d *server.Display, version int32, bind server.BindFunc) error {
	138	+	return d.CreateGlobal(WpViewportInterface, version, bind)
	139	+	}
	140	+	func resourceOf(v interface{ GetResource() server.Resource }) server.Resource {
	141	+	if v == nil {
	142	+	return nil
	143	+	}
	144	+	return v.GetResource()
	145	+	}
	146	+	func (self WpViewporter) GetResource() server.Resource {
	147	+	if self == nil {
	148	+	return nil
	149	+	}
	150	+	return self.Resource
	151	+	}
	152	+	func (self WpViewport) GetResource() server.Resource {
	153	+	if self == nil {
	154	+	return nil
	155	+	}
	156	+	return self.Resource
	157	+	}

@@ -0,0 +1,157 @@
	1	+	// Code generated by wlgen; DO NOT EDIT.
	2	+	package viewporter
	3	+
	4	+	import (
	5	+	"fmt"
	6	+	wayland "github.com/bnema/purego-libwayland/protocol/wayland"
	7	+	"github.com/bnema/purego-libwayland/server"
	8	+	)
	9	+
	10	+	var WpViewporterInterface *server.Interface
	11	+	var WpViewportInterface *server.Interface
	12	+
	13	+	func init() {
	14	+	WpViewporterInterface = &server.Interface{Name: "wp_viewporter", Version: 1}
	15	+	WpViewportInterface = &server.Interface{Name: "wp_viewport", Version: 1}
	16	+	WpViewporterInterface.Requests = []server.Message{
	17	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	18	+	{Name: "get_viewport", Signature: "no", Types: []*server.Interface{WpViewportInterface, wayland.SurfaceInterface}},
	19	+	}
	20	+	WpViewporterInterface.Events = []server.Message{}
	21	+	WpViewportInterface.Requests = []server.Message{
	22	+	{Name: "destroy", Signature: "", Types: []*server.Interface{}},
	23	+	{Name: "set_source", Signature: "ffff", Types: []*server.Interface{nil, nil, nil, nil}},
	24	+	{Name: "set_destination", Signature: "ii", Types: []*server.Interface{nil, nil}},
	25	+	}
	26	+	WpViewportInterface.Events = []server.Message{}
	27	+	if err := server.NewInterfaces(WpViewporterInterface, WpViewportInterface); err != nil {
	28	+	panic(err)
	29	+	}
	30	+	}
	31	+
	32	+	// WpViewporter surface cropping and scaling.
	33	+	type WpViewporter struct{ *server.Resource }
	34	+
	35	+	func WrapWpViewporter(r server.Resource) WpViewporter {
	36	+	if r == nil {
	37	+	return nil
	38	+	}
	39	+	return &WpViewporter{r}
	40	+	}
	41	+
	42	+	const WpViewporterRequestDestroy uint32 = 0
	43	+	const WpViewporterRequestGetViewport uint32 = 1
	44	+
	45	+	// WpViewporterError .
	46	+	type WpViewporterError uint32
	47	+
	48	+	const (
	49	+	WpViewporterErrorViewportExists WpViewporterError = 0
	50	+	)
	51	+
	52	+	// WpViewporterHandler handles wp_viewporter requests.
	53	+	type WpViewporterHandler interface {
	54	+	Destroy(self *WpViewporter)
	55	+	GetViewport(self WpViewporter, id uint32, surface wayland.Surface)
	56	+	}
	57	+
	58	+	func NewWpViewporter(c server.Client, version int32, id uint32, h WpViewporterHandler) (*WpViewporter, error) {
	59	+	if h == nil {
	60	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_viewporter")
	61	+	}
	62	+	var self *WpViewporter
	63	+	r, err := c.CreateResource(WpViewporterInterface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	64	+	switch opcode {
	65	+	case 0:
	66	+	h.Destroy(self)
	67	+	self.Destroy()
	68	+	case 1:
	69	+	h.GetViewport(self, args[0].NewID(), wayland.WrapSurface(args[1].Resource()))
	70	+	}
	71	+	})
	72	+	if err != nil {
	73	+	return nil, err
	74	+	}
	75	+	self = WrapWpViewporter(r)
	76	+	r.Data = self
	77	+	return self, nil
	78	+	}
	79	+	func NewWpViewporterGlobal(d *server.Display, version int32, bind server.BindFunc) error {
	80	+	return d.CreateGlobal(WpViewporterInterface, version, bind)
	81	+	}
	82	+
	83	+	// WpViewport crop and scale interface to a wl_surface.
	84	+	type WpViewport struct{ *server.Resource }
	85	+
	86	+	func WrapWpViewport(r server.Resource) WpViewport {
	87	+	if r == nil {
	88	+	return nil
	89	+	}
	90	+	return &WpViewport{r}
	91	+	}
	92	+
	93	+	const WpViewportRequestDestroy uint32 = 0
	94	+	const WpViewportRequestSetSource uint32 = 1
	95	+	const WpViewportRequestSetDestination uint32 = 2
	96	+
	97	+	// WpViewportError .
	98	+	type WpViewportError uint32
	99	+
	100	+	const (
	101	+	WpViewportErrorBadValue WpViewportError = 0
	102	+	WpViewportErrorBadSize WpViewportError = 1
	103	+	WpViewportErrorOutOfBuffer WpViewportError = 2
	104	+	WpViewportErrorNoSurface WpViewportError = 3
	105	+	)
	106	+
	107	+	// WpViewportHandler handles wp_viewport requests.
	108	+	type WpViewportHandler interface {
	109	+	Destroy(self *WpViewport)
	110	+	SetSource(self *WpViewport, x server.Fixed, y server.Fixed, width server.Fixed, height server.Fixed)
	111	+	SetDestination(self *WpViewport, width int32, height int32)
	112	+	}
	113	+
	114	+	func NewWpViewport(c server.Client, version int32, id uint32, h WpViewportHandler) (*WpViewport, error) {
	115	+	if h == nil {
	116	+	return nil, fmt.Errorf("purego-libwayland: nil handler for wp_viewport")
	117	+	}
	118	+	var self *WpViewport
	119	+	r, err := c.CreateResource(WpViewportInterface, version, id, func(_ *server.Resource, opcode uint32, args []server.Arg) {
	120	+	switch opcode {
	121	+	case 0:
	122	+	h.Destroy(self)
	123	+	self.Destroy()
	124	+	case 1:
	125	+	h.SetSource(self, args[0].Fixed(), args[1].Fixed(), args[2].Fixed(), args[3].Fixed())
	126	+	case 2:
	127	+	h.SetDestination(self, args[0].Int(), args[1].Int())
	128	+	}
	129	+	})
	130	+	if err != nil {
	131	+	return nil, err
	132	+	}
	133	+	self = WrapWpViewport(r)
	134	+	r.Data = self
	135	+	return self, nil
	136	+	}
	137	+	func NewWpViewportGlobal(d *server.Display, version int32, bind server.BindFunc) error {
	138	+	return d.CreateGlobal(WpViewportInterface, version, bind)
	139	+	}
	140	+	func resourceOf(v interface{ GetResource() server.Resource }) server.Resource {
	141	+	if v == nil {
	142	+	return nil
	143	+	}
	144	+	return v.GetResource()
	145	+	}
	146	+	func (self WpViewporter) GetResource() server.Resource {
	147	+	if self == nil {
	148	+	return nil
	149	+	}
	150	+	return self.Resource
	151	+	}
	152	+	func (self WpViewport) GetResource() server.Resource {
	153	+	if self == nil {
	154	+	return nil
	155	+	}
	156	+	return self.Resource
	157	+	}

A protocols/fractional-scale-v1.xml +102 -0

@@ -0,0 +1,102 @@
	1	+	<?xml version="1.0" encoding="UTF-8"?>
	2	+	<protocol name="fractional_scale_v1">
	3	+	<copyright>
	4	+	Copyright © 2022 Kenny Levinsen
	5	+
	6	+	Permission is hereby granted, free of charge, to any person obtaining a
	7	+	copy of this software and associated documentation files (the "Software"),
	8	+	to deal in the Software without restriction, including without limitation
	9	+	the rights to use, copy, modify, merge, publish, distribute, sublicense,
	10	+	and/or sell copies of the Software, and to permit persons to whom the
	11	+	Software is furnished to do so, subject to the following conditions:
	12	+
	13	+	The above copyright notice and this permission notice (including the next
	14	+	paragraph) shall be included in all copies or substantial portions of the
	15	+	Software.
	16	+
	17	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	+	THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	22	+	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	23	+	DEALINGS IN THE SOFTWARE.
	24	+	</copyright>
	25	+
	26	+	<description summary="Protocol for requesting fractional surface scales">
	27	+	This protocol allows a compositor to suggest for surfaces to render at
	28	+	fractional scales.
	29	+
	30	+	A client can submit scaled content by utilizing wp_viewport. This is done by
	31	+	creating a wp_viewport object for the surface and setting the destination
	32	+	rectangle to the surface size before the scale factor is applied.
	33	+
	34	+	The buffer size is calculated by multiplying the surface size by the
	35	+	intended scale.
	36	+
	37	+	The wl_surface buffer scale should remain set to 1.
	38	+
	39	+	If a surface has a surface-local size of 100 px by 50 px and wishes to
	40	+	submit buffers with a scale of 1.5, then a buffer of 150px by 75 px should
	41	+	be used and the wp_viewport destination rectangle should be 100 px by 50 px.
	42	+
	43	+	For toplevel surfaces, the size is rounded halfway away from zero. The
	44	+	rounding algorithm for subsurface position and size is not defined.
	45	+	</description>
	46	+
	47	+	<interface name="wp_fractional_scale_manager_v1" version="1">
	48	+	<description summary="fractional surface scale information">
	49	+	A global interface for requesting surfaces to use fractional scales.
	50	+	</description>
	51	+
	52	+	<request name="destroy" type="destructor">
	53	+	<description summary="unbind the fractional surface scale interface">
	54	+	Informs the server that the client will not be using this protocol
	55	+	object anymore. This does not affect any other objects,
	56	+	wp_fractional_scale_v1 objects included.
	57	+	</description>
	58	+	</request>
	59	+
	60	+	<enum name="error">
	61	+	<entry name="fractional_scale_exists" value="0"
	62	+	summary="the surface already has a fractional_scale object associated"/>
	63	+	</enum>
	64	+
	65	+	<request name="get_fractional_scale">
	66	+	<description summary="extend surface interface for scale information">
	67	+	Create an add-on object for the the wl_surface to let the compositor
	68	+	request fractional scales. If the given wl_surface already has a
	69	+	wp_fractional_scale_v1 object associated, the fractional_scale_exists
	70	+	protocol error is raised.
	71	+	</description>
	72	+	<arg name="id" type="new_id" interface="wp_fractional_scale_v1"
	73	+	summary="the new surface scale info interface id"/>
	74	+	<arg name="surface" type="object" interface="wl_surface"
	75	+	summary="the surface"/>
	76	+	</request>
	77	+	</interface>
	78	+
	79	+	<interface name="wp_fractional_scale_v1" version="1">
	80	+	<description summary="fractional scale interface to a wl_surface">
	81	+	An additional interface to a wl_surface object which allows the compositor
	82	+	to inform the client of the preferred scale.
	83	+	</description>
	84	+
	85	+	<request name="destroy" type="destructor">
	86	+	<description summary="remove surface scale information for surface">
	87	+	Destroy the fractional scale object. When this object is destroyed,
	88	+	preferred_scale events will no longer be sent.
	89	+	</description>
	90	+	</request>
	91	+
	92	+	<event name="preferred_scale">
	93	+	<description summary="notify of new preferred scale">
	94	+	Notification of a new preferred scale for this surface that the
	95	+	compositor suggests that the client should use.
	96	+
	97	+	The sent scale is the numerator of a fraction with a denominator of 120.
	98	+	</description>
	99	+	<arg name="scale" type="uint" summary="the new preferred scale"/>
	100	+	</event>
	101	+	</interface>
	102	+	</protocol>

@@ -0,0 +1,102 @@
	1	+	<?xml version="1.0" encoding="UTF-8"?>
	2	+	<protocol name="fractional_scale_v1">
	3	+	<copyright>
	4	+	Copyright © 2022 Kenny Levinsen
	5	+
	6	+	Permission is hereby granted, free of charge, to any person obtaining a
	7	+	copy of this software and associated documentation files (the "Software"),
	8	+	to deal in the Software without restriction, including without limitation
	9	+	the rights to use, copy, modify, merge, publish, distribute, sublicense,
	10	+	and/or sell copies of the Software, and to permit persons to whom the
	11	+	Software is furnished to do so, subject to the following conditions:
	12	+
	13	+	The above copyright notice and this permission notice (including the next
	14	+	paragraph) shall be included in all copies or substantial portions of the
	15	+	Software.
	16	+
	17	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	+	THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	22	+	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	23	+	DEALINGS IN THE SOFTWARE.
	24	+	</copyright>
	25	+
	26	+	<description summary="Protocol for requesting fractional surface scales">
	27	+	This protocol allows a compositor to suggest for surfaces to render at
	28	+	fractional scales.
	29	+
	30	+	A client can submit scaled content by utilizing wp_viewport. This is done by
	31	+	creating a wp_viewport object for the surface and setting the destination
	32	+	rectangle to the surface size before the scale factor is applied.
	33	+
	34	+	The buffer size is calculated by multiplying the surface size by the
	35	+	intended scale.
	36	+
	37	+	The wl_surface buffer scale should remain set to 1.
	38	+
	39	+	If a surface has a surface-local size of 100 px by 50 px and wishes to
	40	+	submit buffers with a scale of 1.5, then a buffer of 150px by 75 px should
	41	+	be used and the wp_viewport destination rectangle should be 100 px by 50 px.
	42	+
	43	+	For toplevel surfaces, the size is rounded halfway away from zero. The
	44	+	rounding algorithm for subsurface position and size is not defined.
	45	+	</description>
	46	+
	47	+	<interface name="wp_fractional_scale_manager_v1" version="1">
	48	+	<description summary="fractional surface scale information">
	49	+	A global interface for requesting surfaces to use fractional scales.
	50	+	</description>
	51	+
	52	+	<request name="destroy" type="destructor">
	53	+	<description summary="unbind the fractional surface scale interface">
	54	+	Informs the server that the client will not be using this protocol
	55	+	object anymore. This does not affect any other objects,
	56	+	wp_fractional_scale_v1 objects included.
	57	+	</description>
	58	+	</request>
	59	+
	60	+	<enum name="error">
	61	+	<entry name="fractional_scale_exists" value="0"
	62	+	summary="the surface already has a fractional_scale object associated"/>
	63	+	</enum>
	64	+
	65	+	<request name="get_fractional_scale">
	66	+	<description summary="extend surface interface for scale information">
	67	+	Create an add-on object for the the wl_surface to let the compositor
	68	+	request fractional scales. If the given wl_surface already has a
	69	+	wp_fractional_scale_v1 object associated, the fractional_scale_exists
	70	+	protocol error is raised.
	71	+	</description>
	72	+	<arg name="id" type="new_id" interface="wp_fractional_scale_v1"
	73	+	summary="the new surface scale info interface id"/>
	74	+	<arg name="surface" type="object" interface="wl_surface"
	75	+	summary="the surface"/>
	76	+	</request>
	77	+	</interface>
	78	+
	79	+	<interface name="wp_fractional_scale_v1" version="1">
	80	+	<description summary="fractional scale interface to a wl_surface">
	81	+	An additional interface to a wl_surface object which allows the compositor
	82	+	to inform the client of the preferred scale.
	83	+	</description>
	84	+
	85	+	<request name="destroy" type="destructor">
	86	+	<description summary="remove surface scale information for surface">
	87	+	Destroy the fractional scale object. When this object is destroyed,
	88	+	preferred_scale events will no longer be sent.
	89	+	</description>
	90	+	</request>
	91	+
	92	+	<event name="preferred_scale">
	93	+	<description summary="notify of new preferred scale">
	94	+	Notification of a new preferred scale for this surface that the
	95	+	compositor suggests that the client should use.
	96	+
	97	+	The sent scale is the numerator of a fraction with a denominator of 120.
	98	+	</description>
	99	+	<arg name="scale" type="uint" summary="the new preferred scale"/>
	100	+	</event>
	101	+	</interface>
	102	+	</protocol>

A protocols/viewporter.xml +177 -0

@@ -0,0 +1,177 @@
	1	+	<?xml version="1.0" encoding="UTF-8"?>
	2	+	<protocol name="viewporter">
	3	+
	4	+	<copyright>
	5	+	Copyright © 2013-2016 Collabora, Ltd.
	6	+
	7	+	Permission is hereby granted, free of charge, to any person obtaining a
	8	+	copy of this software and associated documentation files (the "Software"),
	9	+	to deal in the Software without restriction, including without limitation
	10	+	the rights to use, copy, modify, merge, publish, distribute, sublicense,
	11	+	and/or sell copies of the Software, and to permit persons to whom the
	12	+	Software is furnished to do so, subject to the following conditions:
	13	+
	14	+	The above copyright notice and this permission notice (including the next
	15	+	paragraph) shall be included in all copies or substantial portions of the
	16	+	Software.
	17	+
	18	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	21	+	THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	22	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	23	+	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	24	+	DEALINGS IN THE SOFTWARE.
	25	+	</copyright>
	26	+
	27	+	<interface name="wp_viewporter" version="1">
	28	+	<description summary="surface cropping and scaling">
	29	+	The global interface exposing surface cropping and scaling
	30	+	capabilities is used to instantiate an interface extension for a
	31	+	wl_surface object. This extended interface will then allow
	32	+	cropping and scaling the surface contents, effectively
	33	+	disconnecting the direct relationship between the buffer and the
	34	+	surface size.
	35	+	</description>
	36	+
	37	+	<request name="destroy" type="destructor">
	38	+	<description summary="unbind from the cropping and scaling interface">
	39	+	Informs the server that the client will not be using this
	40	+	protocol object anymore. This does not affect any other objects,
	41	+	wp_viewport objects included.
	42	+	</description>
	43	+	</request>
	44	+
	45	+	<enum name="error">
	46	+	<entry name="viewport_exists" value="0"
	47	+	summary="the surface already has a viewport object associated"/>
	48	+	</enum>
	49	+
	50	+	<request name="get_viewport">
	51	+	<description summary="extend surface interface for crop and scale">
	52	+	Instantiate an interface extension for the given wl_surface to
	53	+	crop and scale its content. If the given wl_surface already has
	54	+	a wp_viewport object associated, the viewport_exists
	55	+	protocol error is raised.
	56	+	</description>
	57	+	<arg name="id" type="new_id" interface="wp_viewport"
	58	+	summary="the new viewport interface id"/>
	59	+	<arg name="surface" type="object" interface="wl_surface"
	60	+	summary="the surface"/>
	61	+	</request>
	62	+	</interface>
	63	+
	64	+	<interface name="wp_viewport" version="1">
	65	+	<description summary="crop and scale interface to a wl_surface">
	66	+	An additional interface to a wl_surface object, which allows the
	67	+	client to specify the cropping and scaling of the surface
	68	+	contents.
	69	+
	70	+	This interface works with two concepts: the source rectangle (src_x,
	71	+	src_y, src_width, src_height), and the destination size (dst_width,
	72	+	dst_height). The contents of the source rectangle are scaled to the
	73	+	destination size, and content outside the source rectangle is ignored.
	74	+	This state is double-buffered, see wl_surface.commit.
	75	+
	76	+	The two parts of crop and scale state are independent: the source
	77	+	rectangle, and the destination size. Initially both are unset, that
	78	+	is, no scaling is applied. The whole of the current wl_buffer is
	79	+	used as the source, and the surface size is as defined in
	80	+	wl_surface.attach.
	81	+
	82	+	If the destination size is set, it causes the surface size to become
	83	+	dst_width, dst_height. The source (rectangle) is scaled to exactly
	84	+	this size. This overrides whatever the attached wl_buffer size is,
	85	+	unless the wl_buffer is NULL. If the wl_buffer is NULL, the surface
	86	+	has no content and therefore no size. Otherwise, the size is always
	87	+	at least 1x1 in surface local coordinates.
	88	+
	89	+	If the source rectangle is set, it defines what area of the wl_buffer is
	90	+	taken as the source. If the source rectangle is set and the destination
	91	+	size is not set, then src_width and src_height must be integers, and the
	92	+	surface size becomes the source rectangle size. This results in cropping
	93	+	without scaling. If src_width or src_height are not integers and
	94	+	destination size is not set, the bad_size protocol error is raised when
	95	+	the surface state is applied.
	96	+
	97	+	The coordinate transformations from buffer pixel coordinates up to
	98	+	the surface-local coordinates happen in the following order:
	99	+	1. buffer_transform (wl_surface.set_buffer_transform)
	100	+	2. buffer_scale (wl_surface.set_buffer_scale)
	101	+	3. crop and scale (wp_viewport.set*)
	102	+	This means, that the source rectangle coordinates of crop and scale
	103	+	are given in the coordinates after the buffer transform and scale,
	104	+	i.e. in the coordinates that would be the surface-local coordinates
	105	+	if the crop and scale was not applied.
	106	+
	107	+	If src_x or src_y are negative, the bad_value protocol error is raised.
	108	+	Otherwise, if the source rectangle is partially or completely outside of
	109	+	the non-NULL wl_buffer, then the out_of_buffer protocol error is raised
	110	+	when the surface state is applied. A NULL wl_buffer does not raise the
	111	+	out_of_buffer error.
	112	+
	113	+	If the wl_surface associated with the wp_viewport is destroyed,
	114	+	all wp_viewport requests except 'destroy' raise the protocol error
	115	+	no_surface.
	116	+
	117	+	If the wp_viewport object is destroyed, the crop and scale
	118	+	state is removed from the wl_surface. The change will be applied
	119	+	on the next wl_surface.commit.
	120	+	</description>
	121	+
	122	+	<request name="destroy" type="destructor">
	123	+	<description summary="remove scaling and cropping from the surface">
	124	+	The associated wl_surface's crop and scale state is removed.
	125	+	The change is applied on the next wl_surface.commit.
	126	+	</description>
	127	+	</request>
	128	+
	129	+	<enum name="error">
	130	+	<entry name="bad_value" value="0"
	131	+	summary="negative or zero values in width or height"/>
	132	+	<entry name="bad_size" value="1"
	133	+	summary="destination size is not integer"/>
	134	+	<entry name="out_of_buffer" value="2"
	135	+	summary="source rectangle extends outside of the content area"/>
	136	+	<entry name="no_surface" value="3"
	137	+	summary="the wl_surface was destroyed"/>
	138	+	</enum>
	139	+
	140	+	<request name="set_source">
	141	+	<description summary="set the source rectangle for cropping">
	142	+	Set the source rectangle of the associated wl_surface. See
	143	+	wp_viewport for the description, and relation to the wl_buffer
	144	+	size.
	145	+
	146	+	If all of x, y, width and height are -1.0, the source rectangle is
	147	+	unset instead. Any other set of values where width or height are zero
	148	+	or negative, or x or y are negative, raise the bad_value protocol
	149	+	error.
	150	+
	151	+	The crop and scale state is double-buffered, see wl_surface.commit.
	152	+	</description>
	153	+	<arg name="x" type="fixed" summary="source rectangle x"/>
	154	+	<arg name="y" type="fixed" summary="source rectangle y"/>
	155	+	<arg name="width" type="fixed" summary="source rectangle width"/>
	156	+	<arg name="height" type="fixed" summary="source rectangle height"/>
	157	+	</request>
	158	+
	159	+	<request name="set_destination">
	160	+	<description summary="set the surface size for scaling">
	161	+	Set the destination size of the associated wl_surface. See
	162	+	wp_viewport for the description, and relation to the wl_buffer
	163	+	size.
	164	+
	165	+	If width is -1 and height is -1, the destination size is unset
	166	+	instead. Any other pair of values for width and height that
	167	+	contains zero or negative values raises the bad_value protocol
	168	+	error.
	169	+
	170	+	The crop and scale state is double-buffered, see wl_surface.commit.
	171	+	</description>
	172	+	<arg name="width" type="int" summary="surface width"/>
	173	+	<arg name="height" type="int" summary="surface height"/>
	174	+	</request>
	175	+	</interface>
	176	+
	177	+	</protocol>

@@ -0,0 +1,177 @@
	1	+	<?xml version="1.0" encoding="UTF-8"?>
	2	+	<protocol name="viewporter">
	3	+
	4	+	<copyright>
	5	+	Copyright © 2013-2016 Collabora, Ltd.
	6	+
	7	+	Permission is hereby granted, free of charge, to any person obtaining a
	8	+	copy of this software and associated documentation files (the "Software"),
	9	+	to deal in the Software without restriction, including without limitation
	10	+	the rights to use, copy, modify, merge, publish, distribute, sublicense,
	11	+	and/or sell copies of the Software, and to permit persons to whom the
	12	+	Software is furnished to do so, subject to the following conditions:
	13	+
	14	+	The above copyright notice and this permission notice (including the next
	15	+	paragraph) shall be included in all copies or substantial portions of the
	16	+	Software.
	17	+
	18	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	21	+	THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	22	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	23	+	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	24	+	DEALINGS IN THE SOFTWARE.
	25	+	</copyright>
	26	+
	27	+	<interface name="wp_viewporter" version="1">
	28	+	<description summary="surface cropping and scaling">
	29	+	The global interface exposing surface cropping and scaling
	30	+	capabilities is used to instantiate an interface extension for a
	31	+	wl_surface object. This extended interface will then allow
	32	+	cropping and scaling the surface contents, effectively
	33	+	disconnecting the direct relationship between the buffer and the
	34	+	surface size.
	35	+	</description>
	36	+
	37	+	<request name="destroy" type="destructor">
	38	+	<description summary="unbind from the cropping and scaling interface">
	39	+	Informs the server that the client will not be using this
	40	+	protocol object anymore. This does not affect any other objects,
	41	+	wp_viewport objects included.
	42	+	</description>
	43	+	</request>
	44	+
	45	+	<enum name="error">
	46	+	<entry name="viewport_exists" value="0"
	47	+	summary="the surface already has a viewport object associated"/>
	48	+	</enum>
	49	+
	50	+	<request name="get_viewport">
	51	+	<description summary="extend surface interface for crop and scale">
	52	+	Instantiate an interface extension for the given wl_surface to
	53	+	crop and scale its content. If the given wl_surface already has
	54	+	a wp_viewport object associated, the viewport_exists
	55	+	protocol error is raised.
	56	+	</description>
	57	+	<arg name="id" type="new_id" interface="wp_viewport"
	58	+	summary="the new viewport interface id"/>
	59	+	<arg name="surface" type="object" interface="wl_surface"
	60	+	summary="the surface"/>
	61	+	</request>
	62	+	</interface>
	63	+
	64	+	<interface name="wp_viewport" version="1">
	65	+	<description summary="crop and scale interface to a wl_surface">
	66	+	An additional interface to a wl_surface object, which allows the
	67	+	client to specify the cropping and scaling of the surface
	68	+	contents.
	69	+
	70	+	This interface works with two concepts: the source rectangle (src_x,
	71	+	src_y, src_width, src_height), and the destination size (dst_width,
	72	+	dst_height). The contents of the source rectangle are scaled to the
	73	+	destination size, and content outside the source rectangle is ignored.
	74	+	This state is double-buffered, see wl_surface.commit.
	75	+
	76	+	The two parts of crop and scale state are independent: the source
	77	+	rectangle, and the destination size. Initially both are unset, that
	78	+	is, no scaling is applied. The whole of the current wl_buffer is
	79	+	used as the source, and the surface size is as defined in
	80	+	wl_surface.attach.
	81	+
	82	+	If the destination size is set, it causes the surface size to become
	83	+	dst_width, dst_height. The source (rectangle) is scaled to exactly
	84	+	this size. This overrides whatever the attached wl_buffer size is,
	85	+	unless the wl_buffer is NULL. If the wl_buffer is NULL, the surface
	86	+	has no content and therefore no size. Otherwise, the size is always
	87	+	at least 1x1 in surface local coordinates.
	88	+
	89	+	If the source rectangle is set, it defines what area of the wl_buffer is
	90	+	taken as the source. If the source rectangle is set and the destination
	91	+	size is not set, then src_width and src_height must be integers, and the
	92	+	surface size becomes the source rectangle size. This results in cropping
	93	+	without scaling. If src_width or src_height are not integers and
	94	+	destination size is not set, the bad_size protocol error is raised when
	95	+	the surface state is applied.
	96	+
	97	+	The coordinate transformations from buffer pixel coordinates up to
	98	+	the surface-local coordinates happen in the following order:
	99	+	1. buffer_transform (wl_surface.set_buffer_transform)
	100	+	2. buffer_scale (wl_surface.set_buffer_scale)
	101	+	3. crop and scale (wp_viewport.set*)
	102	+	This means, that the source rectangle coordinates of crop and scale
	103	+	are given in the coordinates after the buffer transform and scale,
	104	+	i.e. in the coordinates that would be the surface-local coordinates
	105	+	if the crop and scale was not applied.
	106	+
	107	+	If src_x or src_y are negative, the bad_value protocol error is raised.
	108	+	Otherwise, if the source rectangle is partially or completely outside of
	109	+	the non-NULL wl_buffer, then the out_of_buffer protocol error is raised
	110	+	when the surface state is applied. A NULL wl_buffer does not raise the
	111	+	out_of_buffer error.
	112	+
	113	+	If the wl_surface associated with the wp_viewport is destroyed,
	114	+	all wp_viewport requests except 'destroy' raise the protocol error
	115	+	no_surface.
	116	+
	117	+	If the wp_viewport object is destroyed, the crop and scale
	118	+	state is removed from the wl_surface. The change will be applied
	119	+	on the next wl_surface.commit.
	120	+	</description>
	121	+
	122	+	<request name="destroy" type="destructor">
	123	+	<description summary="remove scaling and cropping from the surface">
	124	+	The associated wl_surface's crop and scale state is removed.
	125	+	The change is applied on the next wl_surface.commit.
	126	+	</description>
	127	+	</request>
	128	+
	129	+	<enum name="error">
	130	+	<entry name="bad_value" value="0"
	131	+	summary="negative or zero values in width or height"/>
	132	+	<entry name="bad_size" value="1"
	133	+	summary="destination size is not integer"/>
	134	+	<entry name="out_of_buffer" value="2"
	135	+	summary="source rectangle extends outside of the content area"/>
	136	+	<entry name="no_surface" value="3"
	137	+	summary="the wl_surface was destroyed"/>
	138	+	</enum>
	139	+
	140	+	<request name="set_source">
	141	+	<description summary="set the source rectangle for cropping">
	142	+	Set the source rectangle of the associated wl_surface. See
	143	+	wp_viewport for the description, and relation to the wl_buffer
	144	+	size.
	145	+
	146	+	If all of x, y, width and height are -1.0, the source rectangle is
	147	+	unset instead. Any other set of values where width or height are zero
	148	+	or negative, or x or y are negative, raise the bad_value protocol
	149	+	error.
	150	+
	151	+	The crop and scale state is double-buffered, see wl_surface.commit.
	152	+	</description>
	153	+	<arg name="x" type="fixed" summary="source rectangle x"/>
	154	+	<arg name="y" type="fixed" summary="source rectangle y"/>
	155	+	<arg name="width" type="fixed" summary="source rectangle width"/>
	156	+	<arg name="height" type="fixed" summary="source rectangle height"/>
	157	+	</request>
	158	+
	159	+	<request name="set_destination">
	160	+	<description summary="set the surface size for scaling">
	161	+	Set the destination size of the associated wl_surface. See
	162	+	wp_viewport for the description, and relation to the wl_buffer
	163	+	size.
	164	+
	165	+	If width is -1 and height is -1, the destination size is unset
	166	+	instead. Any other pair of values for width and height that
	167	+	contains zero or negative values raises the bad_value protocol
	168	+	error.
	169	+
	170	+	The crop and scale state is double-buffered, see wl_surface.commit.
	171	+	</description>
	172	+	<arg name="width" type="int" summary="surface width"/>
	173	+	<arg name="height" type="int" summary="surface height"/>
	174	+	</request>
	175	+	</interface>
	176	+
	177	+	</protocol>