719 lines
19 KiB
Go
719 lines
19 KiB
Go
// Package xinerama is the X client API for the XINERAMA extension.
|
|
package xinerama
|
|
|
|
// This file is automatically generated from xinerama.xml. Edit at your peril!
|
|
|
|
import (
|
|
"github.com/BurntSushi/xgb"
|
|
|
|
"github.com/BurntSushi/xgb/xproto"
|
|
)
|
|
|
|
// Init must be called before using the XINERAMA extension.
|
|
func Init(c *xgb.Conn) error {
|
|
reply, err := xproto.QueryExtension(c, 8, "XINERAMA").Reply()
|
|
switch {
|
|
case err != nil:
|
|
return err
|
|
case !reply.Present:
|
|
return xgb.Errorf("No extension named XINERAMA could be found on on the server.")
|
|
}
|
|
|
|
c.ExtLock.Lock()
|
|
c.Extensions["XINERAMA"] = reply.MajorOpcode
|
|
c.ExtLock.Unlock()
|
|
for evNum, fun := range xgb.NewExtEventFuncs["XINERAMA"] {
|
|
xgb.NewEventFuncs[int(reply.FirstEvent)+evNum] = fun
|
|
}
|
|
for errNum, fun := range xgb.NewExtErrorFuncs["XINERAMA"] {
|
|
xgb.NewErrorFuncs[int(reply.FirstError)+errNum] = fun
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func init() {
|
|
xgb.NewExtEventFuncs["XINERAMA"] = make(map[int]xgb.NewEventFun)
|
|
xgb.NewExtErrorFuncs["XINERAMA"] = make(map[int]xgb.NewErrorFun)
|
|
}
|
|
|
|
type ScreenInfo struct {
|
|
XOrg int16
|
|
YOrg int16
|
|
Width uint16
|
|
Height uint16
|
|
}
|
|
|
|
// ScreenInfoRead reads a byte slice into a ScreenInfo value.
|
|
func ScreenInfoRead(buf []byte, v *ScreenInfo) int {
|
|
b := 0
|
|
|
|
v.XOrg = int16(xgb.Get16(buf[b:]))
|
|
b += 2
|
|
|
|
v.YOrg = int16(xgb.Get16(buf[b:]))
|
|
b += 2
|
|
|
|
v.Width = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
v.Height = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
return b
|
|
}
|
|
|
|
// ScreenInfoReadList reads a byte slice into a list of ScreenInfo values.
|
|
func ScreenInfoReadList(buf []byte, dest []ScreenInfo) int {
|
|
b := 0
|
|
for i := 0; i < len(dest); i++ {
|
|
dest[i] = ScreenInfo{}
|
|
b += ScreenInfoRead(buf[b:], &dest[i])
|
|
}
|
|
return xgb.Pad(b)
|
|
}
|
|
|
|
// Bytes writes a ScreenInfo value to a byte slice.
|
|
func (v ScreenInfo) Bytes() []byte {
|
|
buf := make([]byte, 8)
|
|
b := 0
|
|
|
|
xgb.Put16(buf[b:], uint16(v.XOrg))
|
|
b += 2
|
|
|
|
xgb.Put16(buf[b:], uint16(v.YOrg))
|
|
b += 2
|
|
|
|
xgb.Put16(buf[b:], v.Width)
|
|
b += 2
|
|
|
|
xgb.Put16(buf[b:], v.Height)
|
|
b += 2
|
|
|
|
return buf[:b]
|
|
}
|
|
|
|
// ScreenInfoListBytes writes a list of ScreenInfo values to a byte slice.
|
|
func ScreenInfoListBytes(buf []byte, list []ScreenInfo) int {
|
|
b := 0
|
|
var structBytes []byte
|
|
for _, item := range list {
|
|
structBytes = item.Bytes()
|
|
copy(buf[b:], structBytes)
|
|
b += len(structBytes)
|
|
}
|
|
return xgb.Pad(b)
|
|
}
|
|
|
|
// Skipping definition for base type 'Bool'
|
|
|
|
// Skipping definition for base type 'Byte'
|
|
|
|
// Skipping definition for base type 'Card8'
|
|
|
|
// Skipping definition for base type 'Char'
|
|
|
|
// Skipping definition for base type 'Void'
|
|
|
|
// Skipping definition for base type 'Double'
|
|
|
|
// Skipping definition for base type 'Float'
|
|
|
|
// Skipping definition for base type 'Int16'
|
|
|
|
// Skipping definition for base type 'Int32'
|
|
|
|
// Skipping definition for base type 'Int8'
|
|
|
|
// Skipping definition for base type 'Card16'
|
|
|
|
// Skipping definition for base type 'Card32'
|
|
|
|
// GetScreenCountCookie is a cookie used only for GetScreenCount requests.
|
|
type GetScreenCountCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// GetScreenCount sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling GetScreenCountCookie.Reply()
|
|
func GetScreenCount(c *xgb.Conn, Window xproto.Window) GetScreenCountCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetScreenCount' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(getScreenCountRequest(c, Window), cookie)
|
|
return GetScreenCountCookie{cookie}
|
|
}
|
|
|
|
// GetScreenCountUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func GetScreenCountUnchecked(c *xgb.Conn, Window xproto.Window) GetScreenCountCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetScreenCount' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(getScreenCountRequest(c, Window), cookie)
|
|
return GetScreenCountCookie{cookie}
|
|
}
|
|
|
|
// GetScreenCountReply represents the data returned from a GetScreenCount request.
|
|
type GetScreenCountReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
ScreenCount byte
|
|
Window xproto.Window
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a GetScreenCount request.
|
|
func (cook GetScreenCountCookie) Reply() (*GetScreenCountReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return getScreenCountReply(buf), nil
|
|
}
|
|
|
|
// getScreenCountReply reads a byte slice into a GetScreenCountReply value.
|
|
func getScreenCountReply(buf []byte) *GetScreenCountReply {
|
|
v := new(GetScreenCountReply)
|
|
b := 1 // skip reply determinant
|
|
|
|
v.ScreenCount = buf[b]
|
|
b += 1
|
|
|
|
v.Sequence = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
v.Length = xgb.Get32(buf[b:]) // 4-byte units
|
|
b += 4
|
|
|
|
v.Window = xproto.Window(xgb.Get32(buf[b:]))
|
|
b += 4
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for GetScreenCount
|
|
// getScreenCountRequest writes a GetScreenCount request to a byte slice.
|
|
func getScreenCountRequest(c *xgb.Conn, Window xproto.Window) []byte {
|
|
size := 8
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 2 // 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
|
|
|
|
return buf
|
|
}
|
|
|
|
// GetScreenSizeCookie is a cookie used only for GetScreenSize requests.
|
|
type GetScreenSizeCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// GetScreenSize sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling GetScreenSizeCookie.Reply()
|
|
func GetScreenSize(c *xgb.Conn, Window xproto.Window, Screen uint32) GetScreenSizeCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetScreenSize' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(getScreenSizeRequest(c, Window, Screen), cookie)
|
|
return GetScreenSizeCookie{cookie}
|
|
}
|
|
|
|
// GetScreenSizeUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func GetScreenSizeUnchecked(c *xgb.Conn, Window xproto.Window, Screen uint32) GetScreenSizeCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetScreenSize' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(getScreenSizeRequest(c, Window, Screen), cookie)
|
|
return GetScreenSizeCookie{cookie}
|
|
}
|
|
|
|
// GetScreenSizeReply represents the data returned from a GetScreenSize request.
|
|
type GetScreenSizeReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
// padding: 1 bytes
|
|
Width uint32
|
|
Height uint32
|
|
Window xproto.Window
|
|
Screen uint32
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a GetScreenSize request.
|
|
func (cook GetScreenSizeCookie) Reply() (*GetScreenSizeReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return getScreenSizeReply(buf), nil
|
|
}
|
|
|
|
// getScreenSizeReply reads a byte slice into a GetScreenSizeReply value.
|
|
func getScreenSizeReply(buf []byte) *GetScreenSizeReply {
|
|
v := new(GetScreenSizeReply)
|
|
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.Window = xproto.Window(xgb.Get32(buf[b:]))
|
|
b += 4
|
|
|
|
v.Screen = xgb.Get32(buf[b:])
|
|
b += 4
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for GetScreenSize
|
|
// getScreenSizeRequest writes a GetScreenSize request to a byte slice.
|
|
func getScreenSizeRequest(c *xgb.Conn, Window xproto.Window, Screen uint32) []byte {
|
|
size := 12
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 3 // 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:], Screen)
|
|
b += 4
|
|
|
|
return buf
|
|
}
|
|
|
|
// GetStateCookie is a cookie used only for GetState requests.
|
|
type GetStateCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// GetState sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling GetStateCookie.Reply()
|
|
func GetState(c *xgb.Conn, Window xproto.Window) GetStateCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetState' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(getStateRequest(c, Window), cookie)
|
|
return GetStateCookie{cookie}
|
|
}
|
|
|
|
// GetStateUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func GetStateUnchecked(c *xgb.Conn, Window xproto.Window) GetStateCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'GetState' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(getStateRequest(c, Window), cookie)
|
|
return GetStateCookie{cookie}
|
|
}
|
|
|
|
// GetStateReply represents the data returned from a GetState request.
|
|
type GetStateReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
State byte
|
|
Window xproto.Window
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a GetState request.
|
|
func (cook GetStateCookie) Reply() (*GetStateReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return getStateReply(buf), nil
|
|
}
|
|
|
|
// getStateReply reads a byte slice into a GetStateReply value.
|
|
func getStateReply(buf []byte) *GetStateReply {
|
|
v := new(GetStateReply)
|
|
b := 1 // skip reply determinant
|
|
|
|
v.State = buf[b]
|
|
b += 1
|
|
|
|
v.Sequence = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
v.Length = xgb.Get32(buf[b:]) // 4-byte units
|
|
b += 4
|
|
|
|
v.Window = xproto.Window(xgb.Get32(buf[b:]))
|
|
b += 4
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for GetState
|
|
// getStateRequest writes a GetState request to a byte slice.
|
|
func getStateRequest(c *xgb.Conn, Window xproto.Window) []byte {
|
|
size := 8
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 1 // 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
|
|
|
|
return buf
|
|
}
|
|
|
|
// IsActiveCookie is a cookie used only for IsActive requests.
|
|
type IsActiveCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// IsActive sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling IsActiveCookie.Reply()
|
|
func IsActive(c *xgb.Conn) IsActiveCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'IsActive' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(isActiveRequest(c), cookie)
|
|
return IsActiveCookie{cookie}
|
|
}
|
|
|
|
// IsActiveUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func IsActiveUnchecked(c *xgb.Conn) IsActiveCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'IsActive' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(isActiveRequest(c), cookie)
|
|
return IsActiveCookie{cookie}
|
|
}
|
|
|
|
// IsActiveReply represents the data returned from a IsActive request.
|
|
type IsActiveReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
// padding: 1 bytes
|
|
State uint32
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a IsActive request.
|
|
func (cook IsActiveCookie) Reply() (*IsActiveReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return isActiveReply(buf), nil
|
|
}
|
|
|
|
// isActiveReply reads a byte slice into a IsActiveReply value.
|
|
func isActiveReply(buf []byte) *IsActiveReply {
|
|
v := new(IsActiveReply)
|
|
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.State = xgb.Get32(buf[b:])
|
|
b += 4
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for IsActive
|
|
// isActiveRequest writes a IsActive request to a byte slice.
|
|
func isActiveRequest(c *xgb.Conn) []byte {
|
|
size := 4
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 4 // request opcode
|
|
b += 1
|
|
|
|
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
|
|
b += 2
|
|
|
|
return buf
|
|
}
|
|
|
|
// QueryScreensCookie is a cookie used only for QueryScreens requests.
|
|
type QueryScreensCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// QueryScreens sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling QueryScreensCookie.Reply()
|
|
func QueryScreens(c *xgb.Conn) QueryScreensCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'QueryScreens' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(queryScreensRequest(c), cookie)
|
|
return QueryScreensCookie{cookie}
|
|
}
|
|
|
|
// QueryScreensUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func QueryScreensUnchecked(c *xgb.Conn) QueryScreensCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'QueryScreens' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(queryScreensRequest(c), cookie)
|
|
return QueryScreensCookie{cookie}
|
|
}
|
|
|
|
// QueryScreensReply represents the data returned from a QueryScreens request.
|
|
type QueryScreensReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
// padding: 1 bytes
|
|
Number uint32
|
|
// padding: 20 bytes
|
|
ScreenInfo []ScreenInfo // size: xgb.Pad((int(Number) * 8))
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a QueryScreens request.
|
|
func (cook QueryScreensCookie) Reply() (*QueryScreensReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return queryScreensReply(buf), nil
|
|
}
|
|
|
|
// queryScreensReply reads a byte slice into a QueryScreensReply value.
|
|
func queryScreensReply(buf []byte) *QueryScreensReply {
|
|
v := new(QueryScreensReply)
|
|
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.Number = xgb.Get32(buf[b:])
|
|
b += 4
|
|
|
|
b += 20 // padding
|
|
|
|
v.ScreenInfo = make([]ScreenInfo, v.Number)
|
|
b += ScreenInfoReadList(buf[b:], v.ScreenInfo)
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for QueryScreens
|
|
// queryScreensRequest writes a QueryScreens request to a byte slice.
|
|
func queryScreensRequest(c *xgb.Conn) []byte {
|
|
size := 4
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 5 // request opcode
|
|
b += 1
|
|
|
|
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
|
|
b += 2
|
|
|
|
return buf
|
|
}
|
|
|
|
// QueryVersionCookie is a cookie used only for QueryVersion requests.
|
|
type QueryVersionCookie struct {
|
|
*xgb.Cookie
|
|
}
|
|
|
|
// QueryVersion sends a checked request.
|
|
// If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply()
|
|
func QueryVersion(c *xgb.Conn, Major byte, Minor byte) QueryVersionCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(true, true)
|
|
c.NewRequest(queryVersionRequest(c, Major, Minor), cookie)
|
|
return QueryVersionCookie{cookie}
|
|
}
|
|
|
|
// QueryVersionUnchecked sends an unchecked request.
|
|
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
|
|
func QueryVersionUnchecked(c *xgb.Conn, Major byte, Minor byte) QueryVersionCookie {
|
|
c.ExtLock.RLock()
|
|
defer c.ExtLock.RUnlock()
|
|
if _, ok := c.Extensions["XINERAMA"]; !ok {
|
|
panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
|
|
}
|
|
cookie := c.NewCookie(false, true)
|
|
c.NewRequest(queryVersionRequest(c, Major, Minor), cookie)
|
|
return QueryVersionCookie{cookie}
|
|
}
|
|
|
|
// QueryVersionReply represents the data returned from a QueryVersion request.
|
|
type QueryVersionReply struct {
|
|
Sequence uint16 // sequence number of the request for this reply
|
|
Length uint32 // number of bytes in this reply
|
|
// padding: 1 bytes
|
|
Major uint16
|
|
Minor uint16
|
|
}
|
|
|
|
// Reply blocks and returns the reply data for a QueryVersion request.
|
|
func (cook QueryVersionCookie) Reply() (*QueryVersionReply, error) {
|
|
buf, err := cook.Cookie.Reply()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if buf == nil {
|
|
return nil, nil
|
|
}
|
|
return queryVersionReply(buf), nil
|
|
}
|
|
|
|
// 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.Major = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
v.Minor = xgb.Get16(buf[b:])
|
|
b += 2
|
|
|
|
return v
|
|
}
|
|
|
|
// Write request to wire for QueryVersion
|
|
// queryVersionRequest writes a QueryVersion request to a byte slice.
|
|
func queryVersionRequest(c *xgb.Conn, Major byte, Minor byte) []byte {
|
|
size := 8
|
|
b := 0
|
|
buf := make([]byte, size)
|
|
|
|
c.ExtLock.RLock()
|
|
buf[b] = c.Extensions["XINERAMA"]
|
|
c.ExtLock.RUnlock()
|
|
b += 1
|
|
|
|
buf[b] = 0 // request opcode
|
|
b += 1
|
|
|
|
xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
|
|
b += 2
|
|
|
|
buf[b] = Major
|
|
b += 1
|
|
|
|
buf[b] = Minor
|
|
b += 1
|
|
|
|
return buf
|
|
}
|