// getBuffersReply reads a byte slice into a GetBuffersReply value.
func getBuffersReply(buf []byte) *GetBuffersReply {
v := new(GetBuffersReply)
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.Width = xgb.Get32(buf[b:])
b += 4
v.Height = xgb.Get32(buf[b:])
b += 4
v.Count = xgb.Get32(buf[b:])
b += 4
b += 12 // padding
v.Buffers = make([]DRI2Buffer, v.Count)
b += DRI2BufferReadList(buf[b:], v.Buffers)
return v
}
// getContextReply reads a byte slice into a GetContextReply value.
func getContextReply(buf []byte) *GetContextReply {
v := new(GetContextReply)
b := 1 // skip reply determinant
if buf[b] == 1 {
v.Enabled = true
} else {
v.Enabled = false
}
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.ElementHeader = ElementHeader(buf[b])
b += 1
b += 3 // padding
v.NumInterceptedClients = xgb.Get32(buf[b:])
b += 4
b += 16 // padding
v.InterceptedClients = make([]ClientInfo, v.NumInterceptedClients)
b += ClientInfoReadList(buf[b:], v.InterceptedClients)
return v
}
// getParamReply reads a byte slice into a GetParamReply value.
func getParamReply(buf []byte) *GetParamReply {
v := new(GetParamReply)
b := 1 // skip reply determinant
if buf[b] == 1 {
v.IsParamRecognized = true
} else {
v.IsParamRecognized = false
}
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.ValueHi = xgb.Get32(buf[b:])
b += 4
v.ValueLo = xgb.Get32(buf[b:])
b += 4
return v
}
// CompletionEventNew constructs a CompletionEvent value that implements xgb.Event from a byte slice.
func CompletionEventNew(buf []byte) xgb.Event {
v := CompletionEvent{}
b := 1 // don't read event number
b += 1 // padding
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Drawable = xproto.Drawable(xgb.Get32(buf[b:]))
b += 4
v.MinorEvent = xgb.Get16(buf[b:])
b += 2
v.MajorEvent = buf[b]
b += 1
b += 1 // padding
v.Shmseg = Seg(xgb.Get32(buf[b:]))
b += 4
v.Offset = xgb.Get32(buf[b:])
b += 4
return v
}
// AttachFormatRead reads a byte slice into a AttachFormat value.
func AttachFormatRead(buf []byte, v *AttachFormat) int {
b := 0
v.Attachment = xgb.Get32(buf[b:])
b += 4
v.Format = xgb.Get32(buf[b:])
b += 4
return b
}
// ClientInfoRead reads a byte slice into a ClientInfo value.
func ClientInfoRead(buf []byte, v *ClientInfo) int {
b := 0
v.ClientResource = ClientSpec(xgb.Get32(buf[b:]))
b += 4
v.NumRanges = xgb.Get32(buf[b:])
b += 4
v.Ranges = make([]Range, v.NumRanges)
b += RangeReadList(buf[b:], v.Ranges)
return b
}
// authenticateReply reads a byte slice into a AuthenticateReply value.
func authenticateReply(buf []byte) *AuthenticateReply {
v := new(AuthenticateReply)
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.Authenticated = xgb.Get32(buf[b:])
b += 4
return v
}
// waitSBCReply reads a byte slice into a WaitSBCReply value.
func waitSBCReply(buf []byte) *WaitSBCReply {
v := new(WaitSBCReply)
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.UstHi = xgb.Get32(buf[b:])
b += 4
v.UstLo = xgb.Get32(buf[b:])
b += 4
v.MscHi = xgb.Get32(buf[b:])
b += 4
v.MscLo = xgb.Get32(buf[b:])
b += 4
v.SbcHi = xgb.Get32(buf[b:])
b += 4
v.SbcLo = xgb.Get32(buf[b:])
b += 4
return v
}
// PropValNum64 transforms a GetPropertyReply struct into a 64 bit
// integer. Useful when the property value is a single integer.
func PropValNum64(reply *xproto.GetPropertyReply, err error) (int64, error) {
if err != nil {
return 0, err
}
if reply.Format != 32 {
return 0, fmt.Errorf("PropValNum: Expected format 32 but got %d",
reply.Format)
}
return int64(xgb.Get32(reply.Value)), nil
}
// getOverlayWindowReply reads a byte slice into a GetOverlayWindowReply value.
func getOverlayWindowReply(buf []byte) *GetOverlayWindowReply {
v := new(GetOverlayWindowReply)
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.OverlayWin = xproto.Window(xgb.Get32(buf[b:]))
b += 4
b += 20 // padding
return v
}
// enableContextReply reads a byte slice into a EnableContextReply value.
func enableContextReply(buf []byte) *EnableContextReply {
v := new(EnableContextReply)
b := 1 // skip reply determinant
v.Category = buf[b]
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.ElementHeader = ElementHeader(buf[b])
b += 1
if buf[b] == 1 {
v.ClientSwapped = true
} else {
v.ClientSwapped = false
}
b += 1
b += 2 // padding
v.XidBase = xgb.Get32(buf[b:])
b += 4
v.ServerTime = xgb.Get32(buf[b:])
b += 4
v.RecSequenceNum = xgb.Get32(buf[b:])
b += 4
b += 8 // padding
v.Data = make([]byte, (int(v.Length) * 4))
copy(v.Data[:(int(v.Length)*4)], buf[b:])
b += xgb.Pad(int((int(v.Length) * 4)))
return v
}
// queryExtentsReply reads a byte slice into a QueryExtentsReply value.
func queryExtentsReply(buf []byte) *QueryExtentsReply {
v := new(QueryExtentsReply)
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
if buf[b] == 1 {
v.BoundingShaped = true
} else {
v.BoundingShaped = false
}
b += 1
if buf[b] == 1 {
v.ClipShaped = true
} else {
v.ClipShaped = false
}
b += 1
b += 2 // padding
v.BoundingShapeExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.BoundingShapeExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.BoundingShapeExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.BoundingShapeExtentsHeight = xgb.Get16(buf[b:])
b += 2
v.ClipShapeExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.ClipShapeExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.ClipShapeExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.ClipShapeExtentsHeight = xgb.Get16(buf[b:])
b += 2
return v
}
// queryVersionReply reads a byte slice into a QueryVersionReply value.
func queryVersionReply(buf []byte) *QueryVersionReply {
v := new(QueryVersionReply)
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.MajorVersion = xgb.Get32(buf[b:])
b += 4
v.MinorVersion = xgb.Get32(buf[b:])
b += 4
return v
}
// swapBuffersReply reads a byte slice into a SwapBuffersReply value.
func swapBuffersReply(buf []byte) *SwapBuffersReply {
v := new(SwapBuffersReply)
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.SwapHi = xgb.Get32(buf[b:])
b += 4
v.SwapLo = xgb.Get32(buf[b:])
b += 4
return v
}
// DRI2BufferRead reads a byte slice into a DRI2Buffer value.
func DRI2BufferRead(buf []byte, v *DRI2Buffer) int {
b := 0
v.Attachment = xgb.Get32(buf[b:])
b += 4
v.Name = xgb.Get32(buf[b:])
b += 4
v.Pitch = xgb.Get32(buf[b:])
b += 4
v.Cpp = xgb.Get32(buf[b:])
b += 4
v.Flags = xgb.Get32(buf[b:])
b += 4
return b
}
func main() {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
// Get the window id of the root window.
setup := xproto.Setup(X)
root := setup.DefaultScreen(X).Root
// Get the atom id (i.e., intern an atom) of "_NET_ACTIVE_WINDOW".
aname := "_NET_ACTIVE_WINDOW"
query1, buf := xproto.InternAtom(X, nil, true, uint16(len(aname)), aname)
activeAtom, err := query1.Reply()
if err != nil {
log.Fatal(err)
}
// Get the atom id (i.e., intern an atom) of "_NET_WM_NAME".
aname = "_NET_WM_NAME"
query2, buf := xproto.InternAtom(X, buf, true, uint16(len(aname)),
aname)
nameAtom, err := query2.Reply()
if err != nil {
log.Fatal(err)
}
// Get the actual value of _NET_ACTIVE_WINDOW.
// Note that 'reply.Value' is just a slice of bytes, so we use an
// XGB helper function, 'Get32', to pull an unsigned 32-bit integer out
// of the byte slice. We then convert it to an X resource id so it can
// be used to get the name of the window in the next GetProperty request.
query3, buf := xproto.GetProperty(X, buf, false, root, activeAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1)
reply, err := query3.Reply()
if err != nil {
log.Fatal(err)
}
windowId := xproto.Window(xgb.Get32(reply.Value))
fmt.Printf("Active window id: %X\n", windowId)
// Now get the value of _NET_WM_NAME for the active window.
// Note that this time, we simply convert the resulting byte slice,
// reply.Value, to a string.
query4, buf := xproto.GetProperty(X, buf, false, windowId, nameAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1)
reply, err = query4.Reply()
if err != nil {
log.Fatal(err)
}
fmt.Printf("Active window name: %s\n", string(reply.Value))
}
// getImageReply reads a byte slice into a GetImageReply value.
func getImageReply(buf []byte) *GetImageReply {
v := new(GetImageReply)
b := 1 // skip reply determinant
v.Depth = buf[b]
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.Visual = xproto.Visualid(xgb.Get32(buf[b:]))
b += 4
v.Size = xgb.Get32(buf[b:])
b += 4
return v
}
// PropValWindow transforms a GetPropertyReply struct into an X resource
// window identifier.
// The property reply must be in 32 bit format.
func PropValWindow(reply *xproto.GetPropertyReply,
err error) (xproto.Window, error) {
if err != nil {
return 0, err
}
if reply.Format != 32 {
return 0, fmt.Errorf("PropValId: Expected format 32 but got %d",
reply.Format)
}
return xproto.Window(xgb.Get32(reply.Value)), nil
}
// BufferSwapCompleteEventNew constructs a BufferSwapCompleteEvent value that implements xgb.Event from a byte slice.
func BufferSwapCompleteEventNew(buf []byte) xgb.Event {
v := BufferSwapCompleteEvent{}
b := 1 // don't read event number
b += 1 // padding
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.EventType = xgb.Get16(buf[b:])
b += 2
b += 2 // padding
v.Drawable = xproto.Drawable(xgb.Get32(buf[b:]))
b += 4
v.UstHi = xgb.Get32(buf[b:])
b += 4
v.UstLo = xgb.Get32(buf[b:])
b += 4
v.MscHi = xgb.Get32(buf[b:])
b += 4
v.MscLo = xgb.Get32(buf[b:])
b += 4
v.Sbc = xgb.Get32(buf[b:])
b += 4
return v
}
// connectReply reads a byte slice into a ConnectReply value.
func connectReply(buf []byte) *ConnectReply {
v := new(ConnectReply)
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.DriverNameLength = xgb.Get32(buf[b:])
b += 4
v.DeviceNameLength = xgb.Get32(buf[b:])
b += 4
b += 16 // padding
{
byteString := make([]byte, v.DriverNameLength)
copy(byteString[:v.DriverNameLength], buf[b:])
v.DriverName = string(byteString)
b += xgb.Pad(int(v.DriverNameLength))
}
v.AlignmentPad = make([]byte, (((int(v.DriverNameLength) + 3) & -4) - int(v.DriverNameLength)))
copy(v.AlignmentPad[:(((int(v.DriverNameLength)+3)&-4)-int(v.DriverNameLength))], buf[b:])
b += xgb.Pad(int((((int(v.DriverNameLength) + 3) & -4) - int(v.DriverNameLength))))
{
byteString := make([]byte, v.DeviceNameLength)
copy(byteString[:v.DeviceNameLength], buf[b:])
v.DeviceName = string(byteString)
b += xgb.Pad(int(v.DeviceNameLength))
}
return v
}
// NotifyEventNew constructs a NotifyEvent value that implements xgb.Event from a byte slice.
func NotifyEventNew(buf []byte) xgb.Event {
v := NotifyEvent{}
b := 1 // don't read event number
v.ShapeKind = Kind(buf[b])
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.AffectedWindow = xproto.Window(xgb.Get32(buf[b:]))
b += 4
v.ExtentsX = int16(xgb.Get16(buf[b:]))
b += 2
v.ExtentsY = int16(xgb.Get16(buf[b:]))
b += 2
v.ExtentsWidth = xgb.Get16(buf[b:])
b += 2
v.ExtentsHeight = xgb.Get16(buf[b:])
b += 2
v.ServerTime = xproto.Timestamp(xgb.Get32(buf[b:]))
b += 4
if buf[b] == 1 {
v.Shaped = true
} else {
v.Shaped = false
}
b += 1
b += 11 // padding
return v
}
// PropValAtom transforms a GetPropertyReply struct into an ATOM name.
// The property reply must be in 32 bit format.
func PropValAtom(xu *xgbutil.XUtil, reply *xproto.GetPropertyReply,
err error) (string, error) {
if err != nil {
return "", err
}
if reply.Format != 32 {
return "", fmt.Errorf("PropValAtom: Expected format 32 but got %d",
reply.Format)
}
return AtomName(xu, xproto.Atom(xgb.Get32(reply.Value)))
}
// getRectanglesReply reads a byte slice into a GetRectanglesReply value.
func getRectanglesReply(buf []byte) *GetRectanglesReply {
v := new(GetRectanglesReply)
b := 1 // skip reply determinant
v.Ordering = buf[b]
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
v.RectanglesLen = xgb.Get32(buf[b:])
b += 4
b += 20 // padding
v.Rectangles = make([]xproto.Rectangle, v.RectanglesLen)
b += xproto.RectangleReadList(buf[b:], v.Rectangles)
return v
}
// InvalidateBuffersEventNew constructs a InvalidateBuffersEvent value that implements xgb.Event from a byte slice.
func InvalidateBuffersEventNew(buf []byte) xgb.Event {
v := InvalidateBuffersEvent{}
b := 1 // don't read event number
b += 1 // padding
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Drawable = xproto.Drawable(xgb.Get32(buf[b:]))
b += 4
return v
}
// copyRegionReply reads a byte slice into a CopyRegionReply value.
func copyRegionReply(buf []byte) *CopyRegionReply {
v := new(CopyRegionReply)
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
return v
}
// BadContextErrorNew constructs a BadContextError value that implements xgb.Error from a byte slice.
func BadContextErrorNew(buf []byte) xgb.Error {
v := BadContextError{}
v.NiceName = "BadContext"
b := 1 // skip error determinant
b += 1 // don't read error number
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.InvalidRecord = xgb.Get32(buf[b:])
b += 4
return v
}
// PropValNums is the same as PropValNum, except that it returns a slice
// of integers. Also must be 32 bit format.
func PropValNums(reply *xproto.GetPropertyReply, err error) ([]uint, error) {
if err != nil {
return nil, err
}
if reply.Format != 32 {
return nil, fmt.Errorf("PropValIds: Expected format 32 but got %d",
reply.Format)
}
nums := make([]uint, reply.ValueLen)
vals := reply.Value
for i := 0; len(vals) >= 4; i++ {
nums[i] = uint(xgb.Get32(vals))
vals = vals[4:]
}
return nums, nil
}
// inputSelectedReply reads a byte slice into a InputSelectedReply value.
func inputSelectedReply(buf []byte) *InputSelectedReply {
v := new(InputSelectedReply)
b := 1 // skip reply determinant
if buf[b] == 1 {
v.Enabled = true
} else {
v.Enabled = false
}
b += 1
v.Sequence = xgb.Get16(buf[b:])
b += 2
v.Length = xgb.Get32(buf[b:]) // 4-byte units
b += 4
return v
}
// PropValWindows is the same as PropValWindow, except that it returns a slice
// of identifiers. Also must be 32 bit format.
func PropValWindows(reply *xproto.GetPropertyReply,
err error) ([]xproto.Window, error) {
if err != nil {
return nil, err
}
if reply.Format != 32 {
return nil, fmt.Errorf("PropValIds: Expected format 32 but got %d",
reply.Format)
}
ids := make([]xproto.Window, reply.ValueLen)
vals := reply.Value
for i := 0; len(vals) >= 4; i++ {
ids[i] = xproto.Window(xgb.Get32(vals))
vals = vals[4:]
}
return ids, nil
}
// PropValAtoms is the same as PropValAtom, except that it returns a slice
// of atom names. Also must be 32 bit format.
// This is a method of an XUtil struct, unlike the other 'PropVal...' functions.
func PropValAtoms(xu *xgbutil.XUtil, reply *xproto.GetPropertyReply,
err error) ([]string, error) {
if err != nil {
return nil, err
}
if reply.Format != 32 {
return nil, fmt.Errorf("PropValAtoms: Expected format 32 but got %d",
reply.Format)
}
ids := make([]string, reply.ValueLen)
vals := reply.Value
for i := 0; len(vals) >= 4; i++ {
ids[i], err = AtomName(xu, xproto.Atom(xgb.Get32(vals)))
if err != nil {
return nil, err
}
vals = vals[4:]
}
return ids, nil
}
