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path: root/nexgb/randr/randr.go
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Diffstat (limited to 'nexgb/randr/randr.go')
-rw-r--r--nexgb/randr/randr.go487
1 files changed, 418 insertions, 69 deletions
diff --git a/nexgb/randr/randr.go b/nexgb/randr/randr.go
index 021c011..d280e95 100644
--- a/nexgb/randr/randr.go
+++ b/nexgb/randr/randr.go
@@ -503,6 +503,153 @@ func ModeInfoListBytes(buf []byte, list []ModeInfo) int {
return xgb.Pad(b)
}
+type MonitorInfo struct {
+ Name xproto.Atom
+ Primary bool
+ Automatic bool
+ NOutput uint16
+ X int16
+ Y int16
+ Width uint16
+ Height uint16
+ WidthInMillimeters uint32
+ HeightInMillimeters uint32
+ Outputs []Output // size: xgb.Pad((int(NOutput) * 4))
+}
+
+// MonitorInfoRead reads a byte slice into a MonitorInfo value.
+func MonitorInfoRead(buf []byte, v *MonitorInfo) int {
+ b := 0
+
+ v.Name = xproto.Atom(xgb.Get32(buf[b:]))
+ b += 4
+
+ if buf[b] == 1 {
+ v.Primary = true
+ } else {
+ v.Primary = false
+ }
+ b += 1
+
+ if buf[b] == 1 {
+ v.Automatic = true
+ } else {
+ v.Automatic = false
+ }
+ b += 1
+
+ v.NOutput = xgb.Get16(buf[b:])
+ b += 2
+
+ v.X = int16(xgb.Get16(buf[b:]))
+ b += 2
+
+ v.Y = int16(xgb.Get16(buf[b:]))
+ b += 2
+
+ v.Width = xgb.Get16(buf[b:])
+ b += 2
+
+ v.Height = xgb.Get16(buf[b:])
+ b += 2
+
+ v.WidthInMillimeters = xgb.Get32(buf[b:])
+ b += 4
+
+ v.HeightInMillimeters = xgb.Get32(buf[b:])
+ b += 4
+
+ v.Outputs = make([]Output, v.NOutput)
+ for i := 0; i < int(v.NOutput); i++ {
+ v.Outputs[i] = Output(xgb.Get32(buf[b:]))
+ b += 4
+ }
+
+ return b
+}
+
+// MonitorInfoReadList reads a byte slice into a list of MonitorInfo values.
+func MonitorInfoReadList(buf []byte, dest []MonitorInfo) int {
+ b := 0
+ for i := 0; i < len(dest); i++ {
+ dest[i] = MonitorInfo{}
+ b += MonitorInfoRead(buf[b:], &dest[i])
+ }
+ return xgb.Pad(b)
+}
+
+// Bytes writes a MonitorInfo value to a byte slice.
+func (v MonitorInfo) Bytes() []byte {
+ buf := make([]byte, (24 + xgb.Pad((int(v.NOutput) * 4))))
+ b := 0
+
+ xgb.Put32(buf[b:], uint32(v.Name))
+ b += 4
+
+ if v.Primary {
+ buf[b] = 1
+ } else {
+ buf[b] = 0
+ }
+ b += 1
+
+ if v.Automatic {
+ buf[b] = 1
+ } else {
+ buf[b] = 0
+ }
+ b += 1
+
+ xgb.Put16(buf[b:], v.NOutput)
+ b += 2
+
+ xgb.Put16(buf[b:], uint16(v.X))
+ b += 2
+
+ xgb.Put16(buf[b:], uint16(v.Y))
+ b += 2
+
+ xgb.Put16(buf[b:], v.Width)
+ b += 2
+
+ xgb.Put16(buf[b:], v.Height)
+ b += 2
+
+ xgb.Put32(buf[b:], v.WidthInMillimeters)
+ b += 4
+
+ xgb.Put32(buf[b:], v.HeightInMillimeters)
+ b += 4
+
+ for i := 0; i < int(v.NOutput); i++ {
+ xgb.Put32(buf[b:], uint32(v.Outputs[i]))
+ b += 4
+ }
+
+ return buf[:b]
+}
+
+// MonitorInfoListBytes writes a list of MonitorInfo values to a byte slice.
+func MonitorInfoListBytes(buf []byte, list []MonitorInfo) int {
+ b := 0
+ var structBytes []byte
+ for _, item := range list {
+ structBytes = item.Bytes()
+ copy(buf[b:], structBytes)
+ b += len(structBytes)
+ }
+ return xgb.Pad(b)
+}
+
+// MonitorInfoListSize computes the size (bytes) of a list of MonitorInfo values.
+func MonitorInfoListSize(list []MonitorInfo) int {
+ size := 0
+ for _, item := range list {
+ size += (24 + xgb.Pad((int(item.NOutput) * 4)))
+ }
+ return size
+}
+
const (
NotifyCrtcChange = 0
NotifyOutputChange = 1
@@ -2173,6 +2320,70 @@ func createModeRequest(c *xgb.Conn, Window xproto.Window, ModeInfo ModeInfo, Nam
return buf
}
+// DeleteMonitorCookie is a cookie used only for DeleteMonitor requests.
+type DeleteMonitorCookie struct {
+ *xgb.Cookie
+}
+
+// DeleteMonitor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func DeleteMonitor(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) DeleteMonitorCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'DeleteMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(false, false)
+ c.NewRequest(deleteMonitorRequest(c, Window, Name), cookie)
+ return DeleteMonitorCookie{cookie}
+}
+
+// DeleteMonitorChecked sends a checked request.
+// If an error occurs, it can be retrieved using DeleteMonitorCookie.Check()
+func DeleteMonitorChecked(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) DeleteMonitorCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'DeleteMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(true, false)
+ c.NewRequest(deleteMonitorRequest(c, Window, Name), cookie)
+ return DeleteMonitorCookie{cookie}
+}
+
+// Check returns an error if one occurred for checked requests that are not expecting a reply.
+// This cannot be called for requests expecting a reply, nor for unchecked requests.
+func (cook DeleteMonitorCookie) Check() error {
+ return cook.Cookie.Check()
+}
+
+// Write request to wire for DeleteMonitor
+// deleteMonitorRequest writes a DeleteMonitor request to a byte slice.
+func deleteMonitorRequest(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) []byte {
+ size := 12
+ b := 0
+ buf := make([]byte, size)
+
+ c.ExtLock.RLock()
+ buf[b] = c.Extensions["RANDR"]
+ c.ExtLock.RUnlock()
+ b += 1
+
+ buf[b] = 44 // request opcode
+ b += 1
+
+ xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+ b += 2
+
+ xgb.Put32(buf[b:], uint32(Window))
+ b += 4
+
+ xgb.Put32(buf[b:], uint32(Name))
+ b += 4
+
+ return buf
+}
+
// DeleteOutputModeCookie is a cookie used only for DeleteOutputMode requests.
type DeleteOutputModeCookie struct {
*xgb.Cookie
@@ -2464,11 +2675,9 @@ type GetCrtcGammaReply struct {
// padding: 1 bytes
Size uint16
// padding: 22 bytes
- Red []uint16 // size: xgb.Pad((int(Size) * 2))
- // alignment gap to multiple of 2
+ Red []uint16 // size: xgb.Pad((int(Size) * 2))
Green []uint16 // size: xgb.Pad((int(Size) * 2))
- // alignment gap to multiple of 2
- Blue []uint16 // size: xgb.Pad((int(Size) * 2))
+ Blue []uint16 // size: xgb.Pad((int(Size) * 2))
}
// Reply blocks and returns the reply data for a GetCrtcGamma request.
@@ -2507,16 +2716,12 @@ func getCrtcGammaReply(buf []byte) *GetCrtcGammaReply {
b += 2
}
- b = (b + 1) & ^1 // alignment gap
-
v.Green = make([]uint16, v.Size)
for i := 0; i < int(v.Size); i++ {
v.Green[i] = xgb.Get16(buf[b:])
b += 2
}
- b = (b + 1) & ^1 // alignment gap
-
v.Blue = make([]uint16, v.Size)
for i := 0; i < int(v.Size); i++ {
v.Blue[i] = xgb.Get16(buf[b:])
@@ -2694,8 +2899,7 @@ type GetCrtcInfoReply struct {
NumOutputs uint16
NumPossibleOutputs uint16
Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
- // alignment gap to multiple of 4
- Possible []Output // size: xgb.Pad((int(NumPossibleOutputs) * 4))
+ Possible []Output // size: xgb.Pad((int(NumPossibleOutputs) * 4))
}
// Reply blocks and returns the reply data for a GetCrtcInfo request.
@@ -2760,8 +2964,6 @@ func getCrtcInfoReply(buf []byte) *GetCrtcInfoReply {
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Possible = make([]Output, v.NumPossibleOutputs)
for i := 0; i < int(v.NumPossibleOutputs); i++ {
v.Possible[i] = Output(xgb.Get32(buf[b:]))
@@ -2962,6 +3164,122 @@ func getCrtcTransformRequest(c *xgb.Conn, Crtc Crtc) []byte {
return buf
}
+// GetMonitorsCookie is a cookie used only for GetMonitors requests.
+type GetMonitorsCookie struct {
+ *xgb.Cookie
+}
+
+// GetMonitors sends a checked request.
+// If an error occurs, it will be returned with the reply by calling GetMonitorsCookie.Reply()
+func GetMonitors(c *xgb.Conn, Window xproto.Window, GetActive bool) GetMonitorsCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'GetMonitors' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(true, true)
+ c.NewRequest(getMonitorsRequest(c, Window, GetActive), cookie)
+ return GetMonitorsCookie{cookie}
+}
+
+// GetMonitorsUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func GetMonitorsUnchecked(c *xgb.Conn, Window xproto.Window, GetActive bool) GetMonitorsCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'GetMonitors' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(false, true)
+ c.NewRequest(getMonitorsRequest(c, Window, GetActive), cookie)
+ return GetMonitorsCookie{cookie}
+}
+
+// GetMonitorsReply represents the data returned from a GetMonitors request.
+type GetMonitorsReply struct {
+ Sequence uint16 // sequence number of the request for this reply
+ Length uint32 // number of bytes in this reply
+ // padding: 1 bytes
+ Timestamp xproto.Timestamp
+ NMonitors uint32
+ NOutputs uint32
+ // padding: 12 bytes
+ Monitors []MonitorInfo // size: MonitorInfoListSize(Monitors)
+}
+
+// Reply blocks and returns the reply data for a GetMonitors request.
+func (cook GetMonitorsCookie) Reply() (*GetMonitorsReply, error) {
+ buf, err := cook.Cookie.Reply()
+ if err != nil {
+ return nil, err
+ }
+ if buf == nil {
+ return nil, nil
+ }
+ return getMonitorsReply(buf), nil
+}
+
+// getMonitorsReply reads a byte slice into a GetMonitorsReply value.
+func getMonitorsReply(buf []byte) *GetMonitorsReply {
+ v := new(GetMonitorsReply)
+ b := 1 // skip reply determinant
+
+ b += 1 // padding
+
+ v.Sequence = xgb.Get16(buf[b:])
+ b += 2
+
+ v.Length = xgb.Get32(buf[b:]) // 4-byte units
+ b += 4
+
+ v.Timestamp = xproto.Timestamp(xgb.Get32(buf[b:]))
+ b += 4
+
+ v.NMonitors = xgb.Get32(buf[b:])
+ b += 4
+
+ v.NOutputs = xgb.Get32(buf[b:])
+ b += 4
+
+ b += 12 // padding
+
+ v.Monitors = make([]MonitorInfo, v.NMonitors)
+ b += MonitorInfoReadList(buf[b:], v.Monitors)
+
+ return v
+}
+
+// Write request to wire for GetMonitors
+// getMonitorsRequest writes a GetMonitors request to a byte slice.
+func getMonitorsRequest(c *xgb.Conn, Window xproto.Window, GetActive bool) []byte {
+ size := 12
+ b := 0
+ buf := make([]byte, size)
+
+ c.ExtLock.RLock()
+ buf[b] = c.Extensions["RANDR"]
+ c.ExtLock.RUnlock()
+ b += 1
+
+ buf[b] = 42 // request opcode
+ b += 1
+
+ xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+ b += 2
+
+ xgb.Put32(buf[b:], uint32(Window))
+ b += 4
+
+ if GetActive {
+ buf[b] = 1
+ } else {
+ buf[b] = 0
+ }
+ b += 1
+
+ return buf
+}
+
// GetOutputInfoCookie is a cookie used only for GetOutputInfo requests.
type GetOutputInfoCookie struct {
*xgb.Cookie
@@ -3009,12 +3327,10 @@ type GetOutputInfoReply struct {
NumPreferred uint16
NumClones uint16
NameLen uint16
- Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
- // alignment gap to multiple of 4
- Modes []Mode // size: xgb.Pad((int(NumModes) * 4))
- // alignment gap to multiple of 4
- Clones []Output // size: xgb.Pad((int(NumClones) * 4))
- Name []byte // size: xgb.Pad((int(NameLen) * 1))
+ Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
+ Modes []Mode // size: xgb.Pad((int(NumModes) * 4))
+ Clones []Output // size: xgb.Pad((int(NumClones) * 4))
+ Name []byte // size: xgb.Pad((int(NameLen) * 1))
}
// Reply blocks and returns the reply data for a GetOutputInfo request.
@@ -3082,16 +3398,12 @@ func getOutputInfoReply(buf []byte) *GetOutputInfoReply {
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Modes = make([]Mode, v.NumModes)
for i := 0; i < int(v.NumModes); i++ {
v.Modes[i] = Mode(xgb.Get32(buf[b:]))
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Clones = make([]Output, v.NumClones)
for i := 0; i < int(v.NumClones); i++ {
v.Clones[i] = Output(xgb.Get32(buf[b:]))
@@ -3551,14 +3863,11 @@ type GetProviderInfoReply struct {
NumAssociatedProviders uint16
NameLen uint16
// padding: 8 bytes
- Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
- // alignment gap to multiple of 4
- Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
- // alignment gap to multiple of 4
- AssociatedProviders []Provider // size: xgb.Pad((int(NumAssociatedProviders) * 4))
- // alignment gap to multiple of 4
- AssociatedCapability []uint32 // size: xgb.Pad((int(NumAssociatedProviders) * 4))
- Name string // size: xgb.Pad((int(NameLen) * 1))
+ Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
+ Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
+ AssociatedProviders []Provider // size: xgb.Pad((int(NumAssociatedProviders) * 4))
+ AssociatedCapability []uint32 // size: xgb.Pad((int(NumAssociatedProviders) * 4))
+ Name string // size: xgb.Pad((int(NameLen) * 1))
}
// Reply blocks and returns the reply data for a GetProviderInfo request.
@@ -3613,24 +3922,18 @@ func getProviderInfoReply(buf []byte) *GetProviderInfoReply {
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Outputs = make([]Output, v.NumOutputs)
for i := 0; i < int(v.NumOutputs); i++ {
v.Outputs[i] = Output(xgb.Get32(buf[b:]))
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.AssociatedProviders = make([]Provider, v.NumAssociatedProviders)
for i := 0; i < int(v.NumAssociatedProviders); i++ {
v.AssociatedProviders[i] = Provider(xgb.Get32(buf[b:]))
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.AssociatedCapability = make([]uint32, v.NumAssociatedProviders)
for i := 0; i < int(v.NumAssociatedProviders); i++ {
v.AssociatedCapability[i] = xgb.Get32(buf[b:])
@@ -3966,8 +4269,7 @@ type GetScreenInfoReply struct {
Rate uint16
NInfo uint16
// padding: 2 bytes
- Sizes []ScreenSize // size: xgb.Pad((int(NSizes) * 8))
- // alignment gap to multiple of 2
+ Sizes []ScreenSize // size: xgb.Pad((int(NSizes) * 8))
Rates []RefreshRates // size: RefreshRatesListSize(Rates)
}
@@ -4026,8 +4328,6 @@ func getScreenInfoReply(buf []byte) *GetScreenInfoReply {
v.Sizes = make([]ScreenSize, v.NSizes)
b += ScreenSizeReadList(buf[b:], v.Sizes)
- b = (b + 1) & ^1 // alignment gap
-
v.Rates = make([]RefreshRates, (int(v.NInfo) - int(v.NSizes)))
b += RefreshRatesReadList(buf[b:], v.Rates)
@@ -4101,12 +4401,10 @@ type GetScreenResourcesReply struct {
NumModes uint16
NamesLen uint16
// padding: 8 bytes
- Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
- // alignment gap to multiple of 4
- Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
- // alignment gap to multiple of 4
- Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
- Names []byte // size: xgb.Pad((int(NamesLen) * 1))
+ Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
+ Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
+ Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
+ Names []byte // size: xgb.Pad((int(NamesLen) * 1))
}
// Reply blocks and returns the reply data for a GetScreenResources request.
@@ -4160,16 +4458,12 @@ func getScreenResourcesReply(buf []byte) *GetScreenResourcesReply {
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Outputs = make([]Output, v.NumOutputs)
for i := 0; i < int(v.NumOutputs); i++ {
v.Outputs[i] = Output(xgb.Get32(buf[b:]))
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Modes = make([]ModeInfo, v.NumModes)
b += ModeInfoReadList(buf[b:], v.Modes)
@@ -4247,12 +4541,10 @@ type GetScreenResourcesCurrentReply struct {
NumModes uint16
NamesLen uint16
// padding: 8 bytes
- Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
- // alignment gap to multiple of 4
- Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
- // alignment gap to multiple of 4
- Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
- Names []byte // size: xgb.Pad((int(NamesLen) * 1))
+ Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
+ Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
+ Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
+ Names []byte // size: xgb.Pad((int(NamesLen) * 1))
}
// Reply blocks and returns the reply data for a GetScreenResourcesCurrent request.
@@ -4306,16 +4598,12 @@ func getScreenResourcesCurrentReply(buf []byte) *GetScreenResourcesCurrentReply
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Outputs = make([]Output, v.NumOutputs)
for i := 0; i < int(v.NumOutputs); i++ {
v.Outputs[i] = Output(xgb.Get32(buf[b:]))
b += 4
}
- b = (b + 3) & ^3 // alignment gap
-
v.Modes = make([]ModeInfo, v.NumModes)
b += ModeInfoReadList(buf[b:], v.Modes)
@@ -5254,7 +5542,7 @@ func (cook SetCrtcGammaCookie) Check() error {
// Write request to wire for SetCrtcGamma
// setCrtcGammaRequest writes a SetCrtcGamma request to a byte slice.
func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Green []uint16, Blue []uint16) []byte {
- size := xgb.Pad((((((12 + xgb.Pad((int(Size) * 2))) + 2) + xgb.Pad((int(Size) * 2))) + 2) + xgb.Pad((int(Size) * 2))))
+ size := xgb.Pad((((12 + xgb.Pad((int(Size) * 2))) + xgb.Pad((int(Size) * 2))) + xgb.Pad((int(Size) * 2))))
b := 0
buf := make([]byte, size)
@@ -5266,7 +5554,7 @@ func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Gree
buf[b] = 24 // request opcode
b += 1
- blen := b
+ xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
b += 2
xgb.Put32(buf[b:], uint32(Crtc))
@@ -5282,23 +5570,17 @@ func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Gree
b += 2
}
- b = (b + 1) & ^1 // alignment gap
-
for i := 0; i < int(Size); i++ {
xgb.Put16(buf[b:], Green[i])
b += 2
}
- b = (b + 1) & ^1 // alignment gap
-
for i := 0; i < int(Size); i++ {
xgb.Put16(buf[b:], Blue[i])
b += 2
}
- b = xgb.Pad(b)
- xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
- return buf[:b]
+ return buf
}
// SetCrtcTransformCookie is a cookie used only for SetCrtcTransform requests.
@@ -5385,6 +5667,73 @@ func setCrtcTransformRequest(c *xgb.Conn, Crtc Crtc, Transform render.Transform,
return buf[:b]
}
+// SetMonitorCookie is a cookie used only for SetMonitor requests.
+type SetMonitorCookie struct {
+ *xgb.Cookie
+}
+
+// SetMonitor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func SetMonitor(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) SetMonitorCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'SetMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(false, false)
+ c.NewRequest(setMonitorRequest(c, Window, Monitorinfo), cookie)
+ return SetMonitorCookie{cookie}
+}
+
+// SetMonitorChecked sends a checked request.
+// If an error occurs, it can be retrieved using SetMonitorCookie.Check()
+func SetMonitorChecked(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) SetMonitorCookie {
+ c.ExtLock.RLock()
+ defer c.ExtLock.RUnlock()
+ if _, ok := c.Extensions["RANDR"]; !ok {
+ panic("Cannot issue request 'SetMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+ }
+ cookie := c.NewCookie(true, false)
+ c.NewRequest(setMonitorRequest(c, Window, Monitorinfo), cookie)
+ return SetMonitorCookie{cookie}
+}
+
+// Check returns an error if one occurred for checked requests that are not expecting a reply.
+// This cannot be called for requests expecting a reply, nor for unchecked requests.
+func (cook SetMonitorCookie) Check() error {
+ return cook.Cookie.Check()
+}
+
+// Write request to wire for SetMonitor
+// setMonitorRequest writes a SetMonitor request to a byte slice.
+func setMonitorRequest(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) []byte {
+ size := xgb.Pad((8 + (24 + xgb.Pad((int(Monitorinfo.NOutput) * 4)))))
+ b := 0
+ buf := make([]byte, size)
+
+ c.ExtLock.RLock()
+ buf[b] = c.Extensions["RANDR"]
+ c.ExtLock.RUnlock()
+ b += 1
+
+ buf[b] = 43 // request opcode
+ b += 1
+
+ xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+ b += 2
+
+ xgb.Put32(buf[b:], uint32(Window))
+ b += 4
+
+ {
+ structBytes := Monitorinfo.Bytes()
+ copy(buf[b:], structBytes)
+ b += len(structBytes)
+ }
+
+ return buf
+}
+
// SetOutputPrimaryCookie is a cookie used only for SetOutputPrimary requests.
type SetOutputPrimaryCookie struct {
*xgb.Cookie
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 20:27:18 +0000