diff options
Diffstat (limited to 'randr/randr.go')
| -rw-r--r-- | randr/randr.go | 839 |
1 files changed, 764 insertions, 75 deletions
diff --git a/randr/randr.go b/randr/randr.go index bc62d73..2944f68 100644 --- a/randr/randr.go +++ b/randr/randr.go @@ -345,6 +345,89 @@ func CrtcChangeListBytes(buf []byte, list []CrtcChange) int { return xgb.Pad(b) } +type Lease uint32 + +func NewLeaseId(c *xgb.Conn) (Lease, error) { + id, err := c.NewId() + if err != nil { + return 0, err + } + return Lease(id), nil +} + +type LeaseNotify struct { + Timestamp xproto.Timestamp + Window xproto.Window + Lease Lease + Created byte + // padding: 15 bytes +} + +// LeaseNotifyRead reads a byte slice into a LeaseNotify value. +func LeaseNotifyRead(buf []byte, v *LeaseNotify) int { + b := 0 + + v.Timestamp = xproto.Timestamp(xgb.Get32(buf[b:])) + b += 4 + + v.Window = xproto.Window(xgb.Get32(buf[b:])) + b += 4 + + v.Lease = Lease(xgb.Get32(buf[b:])) + b += 4 + + v.Created = buf[b] + b += 1 + + b += 15 // padding + + return b +} + +// LeaseNotifyReadList reads a byte slice into a list of LeaseNotify values. +func LeaseNotifyReadList(buf []byte, dest []LeaseNotify) int { + b := 0 + for i := 0; i < len(dest); i++ { + dest[i] = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &dest[i]) + } + return xgb.Pad(b) +} + +// Bytes writes a LeaseNotify value to a byte slice. +func (v LeaseNotify) Bytes() []byte { + buf := make([]byte, 28) + b := 0 + + xgb.Put32(buf[b:], uint32(v.Timestamp)) + b += 4 + + xgb.Put32(buf[b:], uint32(v.Window)) + b += 4 + + xgb.Put32(buf[b:], uint32(v.Lease)) + b += 4 + + buf[b] = v.Created + b += 1 + + b += 15 // padding + + return buf[:b] +} + +// LeaseNotifyListBytes writes a list of LeaseNotify values to a byte slice. +func LeaseNotifyListBytes(buf []byte, list []LeaseNotify) int { + b := 0 + var structBytes []byte + for _, item := range list { + structBytes = item.Bytes() + copy(buf[b:], structBytes) + b += len(structBytes) + } + return xgb.Pad(b) +} + type Mode uint32 func NewModeId(c *xgb.Conn) (Mode, error) { @@ -503,6 +586,153 @@ 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 @@ -510,6 +740,7 @@ const ( NotifyProviderChange = 3 NotifyProviderProperty = 4 NotifyResourceChange = 5 + NotifyLease = 6 ) // Notify is the event number for a NotifyEvent. @@ -584,12 +815,14 @@ func init() { // Note that to *create* a Union, you should *never* create // this struct directly (unless you know what you're doing). // Instead use one of the following constructors for 'NotifyDataUnion': -// NotifyDataUnionCcNew(Cc CrtcChange) NotifyDataUnion -// NotifyDataUnionOcNew(Oc OutputChange) NotifyDataUnion -// NotifyDataUnionOpNew(Op OutputProperty) NotifyDataUnion -// NotifyDataUnionPcNew(Pc ProviderChange) NotifyDataUnion -// NotifyDataUnionPpNew(Pp ProviderProperty) NotifyDataUnion -// NotifyDataUnionRcNew(Rc ResourceChange) NotifyDataUnion +// +// NotifyDataUnionCcNew(Cc CrtcChange) NotifyDataUnion +// NotifyDataUnionOcNew(Oc OutputChange) NotifyDataUnion +// NotifyDataUnionOpNew(Op OutputProperty) NotifyDataUnion +// NotifyDataUnionPcNew(Pc ProviderChange) NotifyDataUnion +// NotifyDataUnionPpNew(Pp ProviderProperty) NotifyDataUnion +// NotifyDataUnionRcNew(Rc ResourceChange) NotifyDataUnion +// NotifyDataUnionLcNew(Lc LeaseNotify) NotifyDataUnion type NotifyDataUnion struct { Cc CrtcChange Oc OutputChange @@ -597,6 +830,7 @@ type NotifyDataUnion struct { Pc ProviderChange Pp ProviderProperty Rc ResourceChange + Lc LeaseNotify } // NotifyDataUnionCcNew constructs a new NotifyDataUnion union type with the Cc field. @@ -639,6 +873,10 @@ func NotifyDataUnionCcNew(Cc CrtcChange) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -682,6 +920,10 @@ func NotifyDataUnionOcNew(Oc OutputChange) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -725,6 +967,10 @@ func NotifyDataUnionOpNew(Op OutputProperty) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -768,6 +1014,10 @@ func NotifyDataUnionPcNew(Pc ProviderChange) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -811,6 +1061,10 @@ func NotifyDataUnionPpNew(Pp ProviderProperty) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -854,6 +1108,57 @@ func NotifyDataUnionRcNew(Rc ResourceChange) NotifyDataUnion { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + + return v +} + +// NotifyDataUnionLcNew constructs a new NotifyDataUnion union type with the Lc field. +func NotifyDataUnionLcNew(Lc LeaseNotify) NotifyDataUnion { + var b int + buf := make([]byte, 28) + + { + structBytes := Lc.Bytes() + copy(buf[b:], structBytes) + b += len(structBytes) + } + + // Create the Union type + v := NotifyDataUnion{} + + // Now copy buf into all fields + + b = 0 // always read the same bytes + v.Cc = CrtcChange{} + b += CrtcChangeRead(buf[b:], &v.Cc) + + b = 0 // always read the same bytes + v.Oc = OutputChange{} + b += OutputChangeRead(buf[b:], &v.Oc) + + b = 0 // always read the same bytes + v.Op = OutputProperty{} + b += OutputPropertyRead(buf[b:], &v.Op) + + b = 0 // always read the same bytes + v.Pc = ProviderChange{} + b += ProviderChangeRead(buf[b:], &v.Pc) + + b = 0 // always read the same bytes + v.Pp = ProviderProperty{} + b += ProviderPropertyRead(buf[b:], &v.Pp) + + b = 0 // always read the same bytes + v.Rc = ResourceChange{} + b += ResourceChangeRead(buf[b:], &v.Rc) + + b = 0 // always read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return v } @@ -885,6 +1190,10 @@ func NotifyDataUnionRead(buf []byte, v *NotifyDataUnion) int { v.Rc = ResourceChange{} b += ResourceChangeRead(buf[b:], &v.Rc) + b = 0 // re-read the same bytes + v.Lc = LeaseNotify{} + b += LeaseNotifyRead(buf[b:], &v.Lc) + return 28 } @@ -933,6 +1242,7 @@ const ( NotifyMaskProviderChange = 16 NotifyMaskProviderProperty = 32 NotifyMaskResourceChange = 64 + NotifyMaskLease = 128 ) type Output uint32 @@ -2067,6 +2377,119 @@ func configureProviderPropertyRequest(c *xgb.Conn, Provider Provider, Property x return buf } +// CreateLeaseCookie is a cookie used only for CreateLease requests. +type CreateLeaseCookie struct { + *xgb.Cookie +} + +// CreateLease sends a checked request. +// If an error occurs, it will be returned with the reply by calling CreateLeaseCookie.Reply() +func CreateLease(c *xgb.Conn, Window xproto.Window, Lid Lease, NumCrtcs uint16, NumOutputs uint16, Crtcs []Crtc, Outputs []Output) CreateLeaseCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() + if _, ok := c.Extensions["RANDR"]; !ok { + panic("Cannot issue request 'CreateLease' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.") + } + cookie := c.NewCookie(true, true) + c.NewRequest(createLeaseRequest(c, Window, Lid, NumCrtcs, NumOutputs, Crtcs, Outputs), cookie) + return CreateLeaseCookie{cookie} +} + +// CreateLeaseUnchecked sends an unchecked request. +// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. +func CreateLeaseUnchecked(c *xgb.Conn, Window xproto.Window, Lid Lease, NumCrtcs uint16, NumOutputs uint16, Crtcs []Crtc, Outputs []Output) CreateLeaseCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() + if _, ok := c.Extensions["RANDR"]; !ok { + panic("Cannot issue request 'CreateLease' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.") + } + cookie := c.NewCookie(false, true) + c.NewRequest(createLeaseRequest(c, Window, Lid, NumCrtcs, NumOutputs, Crtcs, Outputs), cookie) + return CreateLeaseCookie{cookie} +} + +// CreateLeaseReply represents the data returned from a CreateLease request. +type CreateLeaseReply struct { + Sequence uint16 // sequence number of the request for this reply + Length uint32 // number of bytes in this reply + Nfd byte + // padding: 24 bytes +} + +// Reply blocks and returns the reply data for a CreateLease request. +func (cook CreateLeaseCookie) Reply() (*CreateLeaseReply, error) { + buf, err := cook.Cookie.Reply() + if err != nil { + return nil, err + } + if buf == nil { + return nil, nil + } + return createLeaseReply(buf), nil +} + +// createLeaseReply reads a byte slice into a CreateLeaseReply value. +func createLeaseReply(buf []byte) *CreateLeaseReply { + v := new(CreateLeaseReply) + b := 1 // skip reply determinant + + v.Nfd = buf[b] + b += 1 + + v.Sequence = xgb.Get16(buf[b:]) + b += 2 + + v.Length = xgb.Get32(buf[b:]) // 4-byte units + b += 4 + + b += 24 // padding + + return v +} + +// Write request to wire for CreateLease +// createLeaseRequest writes a CreateLease request to a byte slice. +func createLeaseRequest(c *xgb.Conn, Window xproto.Window, Lid Lease, NumCrtcs uint16, NumOutputs uint16, Crtcs []Crtc, Outputs []Output) []byte { + size := xgb.Pad(((16 + xgb.Pad((int(NumCrtcs) * 4))) + xgb.Pad((int(NumOutputs) * 4)))) + b := 0 + buf := make([]byte, size) + + c.ExtLock.RLock() + buf[b] = c.Extensions["RANDR"] + c.ExtLock.RUnlock() + b += 1 + + buf[b] = 45 // 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(Lid)) + b += 4 + + xgb.Put16(buf[b:], NumCrtcs) + b += 2 + + xgb.Put16(buf[b:], NumOutputs) + b += 2 + + for i := 0; i < int(NumCrtcs); i++ { + xgb.Put32(buf[b:], uint32(Crtcs[i])) + b += 4 + } + + for i := 0; i < int(NumOutputs); i++ { + xgb.Put32(buf[b:], uint32(Outputs[i])) + b += 4 + } + + return buf +} + // CreateModeCookie is a cookie used only for CreateMode requests. type CreateModeCookie struct { *xgb.Cookie @@ -2173,6 +2596,70 @@ 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 @@ -2426,6 +2913,70 @@ func destroyModeRequest(c *xgb.Conn, Mode Mode) []byte { return buf } +// FreeLeaseCookie is a cookie used only for FreeLease requests. +type FreeLeaseCookie struct { + *xgb.Cookie +} + +// FreeLease sends an unchecked request. +// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent. +func FreeLease(c *xgb.Conn, Lid Lease, Terminate byte) FreeLeaseCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() + if _, ok := c.Extensions["RANDR"]; !ok { + panic("Cannot issue request 'FreeLease' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.") + } + cookie := c.NewCookie(false, false) + c.NewRequest(freeLeaseRequest(c, Lid, Terminate), cookie) + return FreeLeaseCookie{cookie} +} + +// FreeLeaseChecked sends a checked request. +// If an error occurs, it can be retrieved using FreeLeaseCookie.Check() +func FreeLeaseChecked(c *xgb.Conn, Lid Lease, Terminate byte) FreeLeaseCookie { + c.ExtLock.RLock() + defer c.ExtLock.RUnlock() + if _, ok := c.Extensions["RANDR"]; !ok { + panic("Cannot issue request 'FreeLease' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.") + } + cookie := c.NewCookie(true, false) + c.NewRequest(freeLeaseRequest(c, Lid, Terminate), cookie) + return FreeLeaseCookie{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 FreeLeaseCookie) Check() error { + return cook.Cookie.Check() +} + +// Write request to wire for FreeLease +// freeLeaseRequest writes a FreeLease request to a byte slice. +func freeLeaseRequest(c *xgb.Conn, Lid Lease, Terminate byte) []byte { + size := 12 + b := 0 + buf := make([]byte, size) + + c.ExtLock.RLock() + buf[b] = c.Extensions["RANDR"] + c.ExtLock.RUnlock() + b += 1 + + buf[b] = 46 // 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(Lid)) + b += 4 + + buf[b] = Terminate + b += 1 + + return buf +} + // GetCrtcGammaCookie is a cookie used only for GetCrtcGamma requests. type GetCrtcGammaCookie struct { *xgb.Cookie @@ -2464,11 +3015,9 @@ 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 +3056,12 @@ 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 +3239,7 @@ 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 +3304,6 @@ 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 +3504,122 @@ 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 +3667,10 @@ 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 +3738,12 @@ 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 +4203,11 @@ 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 +4262,18 @@ 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 +4609,7 @@ 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 +4668,6 @@ 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 +4741,10 @@ 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 +4798,12 @@ 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 +4881,10 @@ 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 +4938,12 @@ 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 +5882,7 @@ 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 +5894,7 @@ 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 +5910,17 @@ 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 +6007,73 @@ 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 |
