// Open the connection to the X server
func xConnect() *xgb.Conn {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
return X
}
func main(f func(screen.Screen)) (retErr error) {
xc, err := xgb.NewConn()
if err != nil {
return fmt.Errorf("x11driver: xgb.NewConn failed: %v", err)
}
defer func() {
if retErr != nil {
xc.Close()
}
}()
if err := render.Init(xc); err != nil {
return fmt.Errorf("x11driver: render.Init failed: %v", err)
}
if err := shm.Init(xc); err != nil {
return fmt.Errorf("x11driver: shm.Init failed: %v", err)
}
s, err := newScreenImpl(xc)
if err != nil {
return err
}
f(s)
// TODO: tear down the s.run goroutine? It's probably not worth the
// complexity of doing it cleanly, if the app is about to exit anyway.
return nil
}
func main() {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
// Initialize the Xinerama extension.
// The appropriate 'Init' function must be run for *every*
// extension before any of its requests can be used.
err = xinerama.Init(X)
if err != nil {
log.Fatal(err)
}
// Issue a request to get the screen information.
reply, err := xinerama.QueryScreens(X).Reply()
if err != nil {
log.Fatal(err)
}
// reply.Number is the number of active heads, while reply.ScreenInfo
// is a slice of XineramaScreenInfo containing the rectangle geometry
// of each head.
fmt.Printf("Number of heads: %d\n", reply.Number)
for i, screen := range reply.ScreenInfo {
fmt.Printf("%d :: X: %d, Y: %d, Width: %d, Height: %d\n",
i, screen.XOrg, screen.YOrg, screen.Width, screen.Height)
}
}
func (p *Power) initPlan() {
p.screensaver.ConnectIdleOn(p.handleIdleOn)
p.screensaver.ConnectIdleOff(p.handleIdleOff)
p.updateIdletimer()
con, _ := xgb.NewConn()
dpms.Init(con)
dpmsOn = func() { dpms.ForceLevel(con, dpms.DPMSModeOn) }
dpmsOff = func() { dpms.ForceLevel(con, dpms.DPMSModeOff) }
}
func NewWindowLogger(conf map[string]string) (LogGenerator, error) {
x, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
return &WindowLogger{
X11Connection: x,
}, nil
}
// init initializes the X connection, seeds the RNG and starts waiting
// for events.
func init() {
var err error
X, err = xgb.NewConn()
if err != nil {
log.Fatal(err)
}
rand.Seed(time.Now().UnixNano())
go grabEvents()
}
func ScreenRect() (image.Rectangle, error) {
c, err := xgb.NewConn()
if err != nil {
return image.Rectangle{}, err
}
defer c.Close()
screen := xproto.Setup(c).DefaultScreen(c)
x := screen.WidthInPixels
y := screen.HeightInPixels
return image.Rect(0, 0, int(x), int(y)), nil
}
func NewMouse() *Mouse {
mouse := &Mouse{}
x11, err := xgb.NewConn()
if err != nil {
panic("err")
}
xtest.Init(x11)
mouse.x11 = x11
return mouse
}
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"
activeAtom, err := xproto.InternAtom(X, true, uint16(len(aname)),
aname).Reply()
if err != nil {
log.Fatal(err)
}
// Get the atom id (i.e., intern an atom) of "_NET_WM_NAME".
aname = "_NET_WM_NAME"
nameAtom, err := xproto.InternAtom(X, true, uint16(len(aname)),
aname).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.
reply, err := xproto.GetProperty(X, false, root, activeAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1).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.
reply, err = xproto.GetProperty(X, false, windowId, nameAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
if err != nil {
log.Fatal(err)
}
fmt.Printf("Active window name: %s\n", string(reply.Value))
}
// Start the process of updating the status bar. genTitle will be called
// repeatedly in the given interval.
func Run(interval time.Duration, genTitle GenTitleFunc) {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
var status bytes.Buffer
c := time.Tick(interval)
for now := range c {
genTitle(now, &status)
setStatus(status.Bytes(), X)
status.Reset()
}
}
func main() {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
names := seqNames(flagRequests)
fcpu, err := os.Create(flagCpuProfName)
if err != nil {
log.Fatal(err)
}
defer fcpu.Close()
pprof.StartCPUProfile(fcpu)
defer pprof.StopCPUProfile()
start := time.Now()
cookies := make([]xproto.InternAtomCookie, flagRequests)
for i := 0; i < flagRequests; i++ {
cookies[i] = xproto.InternAtom(X,
false, uint16(len(names[i])), names[i])
}
for _, cookie := range cookies {
cookie.Reply()
}
fmt.Printf("Exec time: %s\n\n", time.Since(start))
fmem, err := os.Create(flagMemProfName)
if err != nil {
log.Fatal(err)
}
defer fmem.Close()
pprof.WriteHeapProfile(fmem)
memStats := &runtime.MemStats{}
runtime.ReadMemStats(memStats)
// This isn't right. I'm not sure what's wrong.
lastGcTime := time.Unix(int64(memStats.LastGC/1000000000),
int64(memStats.LastGC-memStats.LastGC/1000000000))
fmt.Printf("Alloc: %d\n", memStats.Alloc)
fmt.Printf("TotalAlloc: %d\n", memStats.TotalAlloc)
fmt.Printf("LastGC: %s\n", lastGcTime)
fmt.Printf("PauseTotalNs: %d\n", memStats.PauseTotalNs)
fmt.Printf("PauseNs: %d\n", memStats.PauseNs)
fmt.Printf("NumGC: %d\n", memStats.NumGC)
}
func TestMain(m *testing.M) {
if os.Getenv("DISPLAY") == "" {
log.Printf("No X; Skipping tests")
os.Exit(0)
}
var err error
X, err = xgb.NewConn()
if err != nil {
log.Fatal(err)
}
rand.Seed(time.Now().UnixNano())
go grabEvents()
os.Exit(m.Run())
}
func main() {
// os.Setenv("DISPLAY", "localhost:6080")
c, err := xgb.NewConn()
if err != nil {
fmt.Println(err)
return
}
screen := xproto.Setup(c).DefaultScreen(c)
rect := image.Rect(0, 0, int(screen.WidthInPixels), int(screen.HeightInPixels))
x, y := rect.Dx(), rect.Dy()
xImg, err := xproto.GetImage(c,
xproto.ImageFormatZPixmap,
xproto.Drawable(screen.Root),
int16(rect.Min.X),
int16(rect.Min.Y),
uint16(x),
uint16(y),
0xffffffff).Reply()
if err != nil {
fmt.Println("Error: %s\r\n", err)
}
data := xImg.Data
for i := 0; i < len(data); i += 4 {
data[i], data[i+2], data[i+3] = data[i+2], data[i], 255
}
img := &image.RGBA{
data, 4 * x, image.Rect(0, 0, x, y)}
z.FcheckParents("screen")
f := z.FileW("screen")
defer f.Close()
png := jpeg.Encode(f, img, &jpeg.Options{90})
fmt.Printf("End with png: %v", png)
}
func main() {
var serve *bool = flag.Bool("serve", false, "Listen for connections")
flag.Usage = usage
flag.Parse()
if remote := os.Getenv("SSH_CONNECTION"); remote == "" && len(flag.Args()) != 0 {
invoked_as := os.Args[0]
actual_binary, err := os.Readlink("/proc/self/exe")
if err != nil {
log.Panic("/proc/self/exe doesn't exist!")
}
log.Print("Invoked as: '", invoked_as, "' (actual=", actual_binary, ")")
log.Panic("Not yet implemented: Would have run locally")
return
}
c, err := xgb.NewConn()
if err != nil {
log.Panic("cannot connect: %v\n", err)
}
s := xproto.Setup(c).DefaultScreen(c)
rl_execute_reply, err := xproto.InternAtom(c, false, uint16(len(atomname)), atomname).Reply()
if err != nil {
panic(err)
}
rl_execute_atom := rl_execute_reply.Atom
if *serve {
//log.Printf("c = %v, s = %v, a = %v", c, s, rl_execute_atom)
start_server(c, s, rl_execute_atom)
} else {
if len(flag.Args()) == 0 {
usage()
}
connect(c, s, rl_execute_atom, fixup_args(flag.Args()))
}
}
func subscribeXEvents(ch chan<- Event, done <-chan struct{}) {
X, err := xgb.NewConn()
if err != nil {
ch <- Event{Error: err}
return
}
defer X.Close()
if err = randr.Init(X); err != nil {
ch <- Event{Error: err}
return
}
root := xproto.Setup(X).DefaultScreen(X).Root
eventMask := randr.NotifyMaskScreenChange |
randr.NotifyMaskCrtcChange |
randr.NotifyMaskOutputChange |
randr.NotifyMaskOutputProperty
err = randr.SelectInputChecked(X, root, uint16(eventMask)).Check()
if err != nil {
ch <- Event{Error: err}
return
}
for {
ev, err := X.WaitForEvent()
select {
case ch <- Event{Event: ev, Error: err}:
case <-time.After(eventSendTimeout):
continue
case <-done:
return
}
if err != nil {
log.Fatal(err)
}
}
}
func main() {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
err = randr.Init(X)
if err != nil {
log.Fatal(err)
}
conf := newConfig()
hds := newHeads(X)
if cmdInfo, ok := commands[command]; ok {
cmdInfo.f(conf, hds)
} else {
fmt.Fprintf(os.Stderr, "Unknown command '%s'.\n", command)
flag.Usage()
}
os.Exit(0)
}
func CaptureRect(rect image.Rectangle) (*image.RGBA, error) {
c, err := xgb.NewConn()
if err != nil {
return nil, err
}
defer c.Close()
screen := xproto.Setup(c).DefaultScreen(c)
x, y := rect.Dx(), rect.Dy()
xImg, err := xproto.GetImage(c, xproto.ImageFormatZPixmap, xproto.Drawable(screen.Root), int16(rect.Min.X), int16(rect.Min.Y), uint16(x), uint16(y), 0xffffffff).Reply()
if err != nil {
return nil, err
}
data := xImg.Data
for i := 0; i < len(data); i += 4 {
data[i], data[i+2], data[i+3] = data[i+2], data[i], 255
}
img := &image.RGBA{data, 4 * x, image.Rect(0, 0, x, y)}
return img, nil
}
func default1() {
X, err := xgb.NewConn()
if err != nil {
fmt.Println(err)
return
}
wid, _ := xproto.NewWindowId(X)
screen := xproto.Setup(X).DefaultScreen(X)
xproto.CreateWindow(X, screen.RootDepth, wid, screen.Root,
0, 0, 500, 500, 0,
xproto.WindowClassInputOutput, screen.RootVisual,
xproto.CwBackPixel|xproto.CwEventMask,
[]uint32{
0xffffffff,
xproto.EventMaskStructureNotify |
xproto.EventMaskKeyPress |
xproto.EventMaskKeyRelease})
xproto.MapWindow(X, wid)
for {
ev, xerr := X.WaitForEvent()
if ev == nil && xerr == nil {
fmt.Println("Both event and error are nil. Exiting...")
return
}
if ev != nil {
fmt.Println("Event: %s\r\n", ev)
}
if xerr != nil {
fmt.Println("Error: %s\r\n", xerr)
}
}
}
func main() {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
defer X.Close()
for {
err = trlock.Lock(X)
if err != nil {
log.Fatal(err)
}
log.Println("Locked")
time.Sleep(5 * time.Second)
log.Println("Unlocking")
trlock.Unlock(X)
log.Println("Unlocked; ctrl-c now")
time.Sleep(3 * time.Second)
}
}
func main() {
X, _ := xgb.NewConn()
// Every extension must be initialized before it can be used.
err := randr.Init(X)
if err != nil {
log.Fatal(err)
}
// Get the root window on the default screen.
root := xproto.Setup(X).DefaultScreen(X).Root
// Gets the current screen resources. Screen resources contains a list
// of names, crtcs, outputs and modes, among other things.
resources, err := randr.GetScreenResources(X, root).Reply()
if err != nil {
log.Fatal(err)
}
// Iterate through all of the outputs and show some of their info.
for _, output := range resources.Outputs {
info, err := randr.GetOutputInfo(X, output, 0).Reply()
if err != nil {
log.Fatal(err)
}
bestMode := info.Modes[0]
for _, mode := range resources.Modes {
if mode.Id == uint32(bestMode) {
fmt.Printf("Width: %d, Height: %d\n", mode.Width, mode.Height)
}
}
}
fmt.Println("\n")
// Iterate through all of the crtcs and show some of their info.
for _, crtc := range resources.Crtcs {
info, err := randr.GetCrtcInfo(X, crtc, 0).Reply()
if err != nil {
log.Fatal(err)
}
fmt.Printf("X: %d, Y: %d, Width: %d, Height: %d\n",
info.X, info.Y, info.Width, info.Height)
}
// Tell RandR to send us events. (I think these are all of them, as of 1.3.)
err = randr.SelectInputChecked(X, root,
randr.NotifyMaskScreenChange|
randr.NotifyMaskCrtcChange|
randr.NotifyMaskOutputChange|
randr.NotifyMaskOutputProperty).Check()
if err != nil {
log.Fatal(err)
}
// Listen to events and just dump them to standard out.
// A more involved approach will have to read the 'U' field of
// RandrNotifyEvent, which is a union (really a struct) of type
// RanrNotifyDataUnion.
for {
ev, err := X.WaitForEvent()
if err != nil {
log.Fatal(err)
}
fmt.Println(ev)
}
}
func main() {
// Open the connection to the X server
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
defer X.Close()
// geometric objects
points := []xproto.Point{
{10, 10},
{10, 20},
{20, 10},
{20, 20}}
polyline := []xproto.Point{
{50, 10},
{5, 20}, // rest of points are relative
{25, -20},
{10, 10}}
segments := []xproto.Segment{
{100, 10, 140, 30},
{110, 25, 130, 60}}
rectangles := []xproto.Rectangle{
{10, 50, 40, 20},
{80, 50, 10, 40}}
arcs := []xproto.Arc{
{10, 100, 60, 40, 0, 90 << 6},
{90, 100, 55, 40, 0, 270 << 6}}
setup := xproto.Setup(X)
// Get the first screen
screen := setup.DefaultScreen(X)
// Create black (foreground) graphic context
foreground, _ := xproto.NewGcontextId(X)
mask := uint32(xproto.GcForeground | xproto.GcGraphicsExposures)
values := []uint32{screen.BlackPixel, 0}
xproto.CreateGC(X, foreground, xproto.Drawable(screen.Root), mask, values)
// Ask for our window's Id
win, _ := xproto.NewWindowId(X)
winDrawable := xproto.Drawable(win)
// Create the window
mask = uint32(xproto.CwBackPixel | xproto.CwEventMask)
values = []uint32{screen.WhitePixel, xproto.EventMaskExposure}
xproto.CreateWindow(X, // Connection
screen.RootDepth, // Depth
win, // Window Id
screen.Root, // Parent Window
0, 0, // x, y
150, 150, // width, height
10, // border_width
xproto.WindowClassInputOutput, // class
screen.RootVisual, // visual
mask, values) // masks
// Map the window on the screen
xproto.MapWindow(X, win)
// Obey the window-delete protocol
tp := "WM_PROTOCOLS"
prp := "WM_DELETE_WINDOW"
typeAtom, _ := xproto.InternAtom(X, true, uint16(len(tp)), tp).Reply()
propertyAtom, _ := xproto.InternAtom(X, true, uint16(len(prp)), prp).Reply()
// It turns out that we need the window ID as a byte-stream... WTF!!
// xprop.ChangeProp(xu, win, 8, "WM_NAME", "STRING", ([]byte)(name))
// ChangeProp(xu *xgbutil.XUtil, win xproto.Window, format byte, prop string, typ string, data []byte)
data := make([]byte, 4)
xgb.Put32(data, uint32(propertyAtom.Atom))
xproto.ChangeProperty(X, xproto.PropModeReplace, win, typeAtom.Atom, xproto.AtomAtom, 32, 1, data)
for {
evt, err := X.WaitForEvent()
fmt.Printf("An event of type %T occured.\n", evt)
if evt == nil && err == nil {
fmt.Println("Exiting....")
return
} else if err != nil {
log.Fatal(err)
}
switch event := evt.(type) {
case xproto.ExposeEvent:
/* We draw the points */
xproto.PolyPoint(X, xproto.CoordModeOrigin, winDrawable, foreground, points)
/* We draw the polygonal line */
xproto.PolyLine(X, xproto.CoordModePrevious, winDrawable, foreground, polyline)
/* We draw the segments */
xproto.PolySegment(X, winDrawable, foreground, segments)
/* We draw the rectangles */
xproto.PolyRectangle(X, winDrawable, foreground, rectangles)
/* We draw the arcs */
xproto.PolyArc(X, winDrawable, foreground, arcs)
case xproto.ClientMessageEvent:
if len(event.Data.Data32) > 0 {
data := xproto.Atom(event.Data.Data32[0])
if data == propertyAtom.Atom {
return
} else {
atomName, _ := xproto.GetAtomName(X, data).Reply()
fmt.Println(atomName.Name)
}
} else {
atomName, _ := xproto.GetAtomName(X, event.Type).Reply()
fmt.Println(atomName.Name)
}
default:
/* Unknown event type, ignore it */
}
}
return
}
// Listen ...
func Listen(fn func(e Event)) error {
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
setup := xproto.Setup(X)
root := setup.DefaultScreen(X).Root
var prevWindowID xproto.Window
var prevClasses []string
for {
<-time.After(msRefresh * time.Millisecond)
// From one of the xgb examples.
aname := "_NET_ACTIVE_WINDOW"
activeAtom, err := xproto.InternAtom(X, true, uint16(len(aname)),
aname).Reply()
if err != nil {
log.Println(err)
continue
}
reply, err := xproto.GetProperty(X, false, root, activeAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
if err != nil {
log.Println(err)
continue
}
windowID := xproto.Window(xgb.Get32(reply.Value))
aname = "WM_CLASS"
nameAtom, err := xproto.InternAtom(X, true, uint16(len(aname)),
aname).Reply()
if err != nil {
log.Println(err)
continue
}
reply, err = xproto.GetProperty(X, false, windowID, nameAtom.Atom,
xproto.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
if err != nil {
log.Println(err)
continue
}
classes := stringSlice(reply.Value)
// Check if active window has changed since last time.
if windowID != prevWindowID {
fn(Lost{
WMClass: prevClasses,
})
fn(Gained{
WMClass: classes,
})
prevWindowID = windowID
prevClasses = classes
}
}
}
func main() {
/* Loading config */
if err := config.Load(config.ConfigPath()); err != nil {
fmt.Printf("Error when loading config : %v\n", err)
return
}
/* Opening the connection */
var conn *xgb.Conn
if c, err := xgb.NewConn(); err != nil {
fmt.Printf("Error when connecting to x11 server : %v\n", err)
return
} else {
conn = c
}
defer conn.Close()
/* Loading screens configuration */
if err := screens.Load(conn); err != nil {
fmt.Printf("Error while getting screens configuration : %v\n", err)
return
}
/* Loading window manager */
if err := window.Load(conn); err != nil {
fmt.Printf("Error while loading window manager : %v\n", err)
return
}
/* Opening the fifo */
var pipe *fifo.Fifo
if p, err := fifo.Open(); err != nil {
fmt.Printf("Error while opening the fifo : %s\n", err)
return
} else {
pipe = p
}
defer pipe.Close()
cmds := [...]fifo.Command{
&KillCommand{},
&RedrawCommand{},
&CloseCommand{false, false, 0},
&NotifCommand{0, "", ""},
}
for _, cmd := range cmds {
pipe.AddCmd(cmd)
}
/* Opening the queue */
var notifs *queue.Queue
if q, err := queue.Open(conn); err != nil {
fmt.Printf("Error while opening the queue : %s\n", err)
return
} else {
notifs = q
}
/* Main loop */
orders := make(chan types.Order, 10)
go xloop(conn, orders)
go pipe.ReadOrders(orders)
notifs.Run(orders)
}
func main() {
// Open the connection to the X server
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
defer X.Close()
setup := xproto.Setup(X)
// Get the first screen
screen := setup.DefaultScreen(X)
// Replace existing window manager
wmName := fmt.Sprintf("WM_S%d", X.DefaultScreen)
managerAtom, err := xproto.InternAtom(X, true, uint16(len(wmName)), wmName).Reply()
if err != nil {
log.Fatal(err)
}
fakeWindow, _ := xproto.NewWindowId(X)
xproto.CreateWindow(X, // Connection
screen.RootDepth, // Depth
fakeWindow, // Window Id
screen.Root, // Parent Window
-1000, -1000, // x, y
1, 1, // width, height
0, // border_width
xproto.WindowClassInputOutput, // class
screen.RootVisual, // visual
xproto.CwEventMask|xproto.CwOverrideRedirect,
[]uint32{1, xproto.EventMaskPropertyChange}) // masks
xproto.MapWindow(X, fakeWindow)
err = xproto.SetSelectionOwnerChecked(X, fakeWindow, managerAtom.Atom, xproto.TimeCurrentTime).Check()
if err != nil {
fmt.Println("foo")
log.Fatal(err)
}
arcs := []xproto.Arc{
{10, 100, 60, 40, 0, 90 << 6},
{90, 100, 55, 40, 0, 270 << 6}}
// Create black (foreground) graphic context
foreground, _ := xproto.NewGcontextId(X)
mask := uint32(xproto.GcForeground | xproto.GcGraphicsExposures)
values := []uint32{screen.BlackPixel, 0}
xproto.CreateGC(X, foreground, xproto.Drawable(screen.Root), mask, values)
// Ask for our window's Id
win, _ := xproto.NewWindowId(X)
winDrawable := xproto.Drawable(win)
// Create the window
mask = uint32(xproto.CwBackPixel | xproto.CwEventMask)
values = []uint32{screen.WhitePixel, xproto.EventMaskExposure}
xproto.CreateWindow(X, // Connection
screen.RootDepth, // Depth
win, // Window Id
screen.Root, // Parent Window
0, 0, // x, y
150, 150, // width, height
10, // border_width
xproto.WindowClassInputOutput, // class
screen.RootVisual, // visual
mask, values) // masks
// Map the window on the screen
xproto.MapWindow(X, win)
// Obey the window-delete protocol
tp := "WM_PROTOCOLS"
prp := "WM_DELETE_WINDOW"
typeAtom, _ := xproto.InternAtom(X, true, uint16(len(tp)), tp).Reply()
propertyAtom, _ := xproto.InternAtom(X, true, uint16(len(prp)), prp).Reply()
data := make([]byte, 4)
xgb.Put32(data, uint32(propertyAtom.Atom))
xproto.ChangeProperty(X, xproto.PropModeReplace, win, typeAtom.Atom, xproto.AtomAtom, 32, 1, data)
// Main loop
for {
evt, err := X.WaitForEvent()
fmt.Printf("An event of type %T occured.\n", evt)
if evt == nil && err == nil {
fmt.Println("Exiting....")
return
} else if err != nil {
log.Fatal(err)
}
switch event := evt.(type) {
case xproto.ExposeEvent:
/* We draw the arcs */
xproto.PolyArc(X, winDrawable, foreground, arcs)
case xproto.ClientMessageEvent:
if len(event.Data.Data32) > 0 {
data := xproto.Atom(event.Data.Data32[0])
if data == propertyAtom.Atom {
return
} else {
atomName, _ := xproto.GetAtomName(X, data).Reply()
fmt.Println(atomName.Name)
}
} else {
atomName, _ := xproto.GetAtomName(X, event.Type).Reply()
fmt.Println(atomName.Name)
}
default:
/* Unknown event type, ignore it */
}
}
return
}
func main() {
X, err := xgb.NewConn()
if err != nil {
fmt.Println(err)
return
}
wid, _ := xproto.NewWindowId(X)
screen := xproto.Setup(X).DefaultScreen(X)
xproto.CreateWindow(X, screen.RootDepth, wid, screen.Root,
0, 0, 240, 240, 0,
xproto.WindowClassInputOutput,
screen.RootVisual,
xproto.CwBackPixel|xproto.CwEventMask,
[]uint32{ // values must be in the order defined by the protocol
0xffffffff,
xproto.EventMaskStructureNotify |
xproto.EventMaskKeyPress |
xproto.EventMaskKeyRelease})
xproto.MapWindow(X, wid)
fmt.Printf("%d %d\n", screen.AllowedDepths[0].Visuals[0].VisualId, screen.RootVisual)
var (
ux, uy float64 = 1, 1
fe cairo.FontExtents
te cairo.TextExtents
text = "joy"
x, y, px, dashlength float64
)
surface := cairo.NewSurfaceFromXCB(xproto.Drawable(wid), screen.AllowedDepths[0].Visuals[0], 240, 240)
surface.Scale(240, 240)
surface.SetFontSize(0.5)
/* Drawing code goes here */
surface.SetSourceRGB(0.0, 0.0, 0.0)
surface.SelectFontFace("Georgia", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
surface.FontExtents(&fe)
ux, uy = surface.DeviceToUserDistance(ux, uy)
if ux > uy {
px = ux
} else {
px = uy
}
surface.FontExtents(&fe)
surface.TextExtents(text, &te)
x = 0.5 - te.X_bearing - te.Width/2
y = 0.5 - fe.Descent + fe.Height/2
/* baseline, descent, ascent, height */
surface.SetLineWidth(4 * px)
dashlength = 9 * px
surface.SetDash([]float64{dashlength}, 0)
surface.SetSourceRGBA(0, 0.6, 0, 0.5)
surface.MoveTo(x+te.X_bearing, y)
surface.RelLineTo(te.Width, 0)
surface.MoveTo(x+te.X_bearing, y+fe.Descent)
surface.RelLineTo(te.Width, 0)
surface.MoveTo(x+te.X_bearing, y-fe.Ascent)
surface.RelLineTo(te.Width, 0)
surface.MoveTo(x+te.X_bearing, y-fe.Height)
surface.RelLineTo(te.Width, 0)
surface.Stroke()
/* extents: width & height */
surface.SetSourceRGBA(0, 0, 0.75, 0.5)
surface.SetLineWidth(px)
dashlength = 3 * px
surface.SetDash([]float64{dashlength}, 0)
surface.Rectangle(x+te.X_bearing, y+te.Y_bearing, te.Width, te.Height)
surface.Stroke()
/* text */
surface.MoveTo(x, y)
surface.SetSourceRGB(0, 0, 0)
surface.ShowText(text)
/* bearing */
surface.SetDash(nil, 0)
surface.SetLineWidth(2 * px)
surface.SetSourceRGBA(0, 0, 0.75, 0.5)
surface.MoveTo(x, y)
surface.RelLineTo(te.X_bearing, te.Y_bearing)
surface.Stroke()
/* text's advance */
surface.SetSourceRGBA(0, 0, 0.75, 0.5)
surface.Arc(x+te.X_advance, y+te.Y_advance, 5*px, 0, 2*math.Pi)
surface.Fill()
/* reference point */
surface.Arc(x, y, 5*px, 0, 2*math.Pi)
surface.SetSourceRGBA(0.75, 0, 0, 0.5)
surface.Fill()
surface.Finish()
surface.Destroy()
for {
ev, xerr := X.WaitForEvent()
if ev == nil && xerr == nil {
// fmt.Println("Both event and error are nil. Exiting...")
return
}
if ev != nil {
// fmt.Printf("Event: %s\n", ev)
}
if xerr != nil {
// fmt.Printf("Error: %s\n", xerr)
}
}
}
func main() {
// Open the connection to the X server
X, err := xgb.NewConn()
if err != nil {
log.Fatal(err)
}
// geometric objects
points := []xproto.Point{
{10, 10},
{10, 20},
{20, 10},
{20, 20}}
polyline := []xproto.Point{
{50, 10},
{5, 20}, // rest of points are relative
{25, -20},
{10, 10}}
segments := []xproto.Segment{
{100, 10, 140, 30},
{110, 25, 130, 60}}
rectangles := []xproto.Rectangle{
{10, 50, 40, 20},
{80, 50, 10, 40}}
arcs := []xproto.Arc{
{10, 100, 60, 40, 0, 90 << 6},
{90, 100, 55, 40, 0, 270 << 6}}
setup := xproto.Setup(X)
// Get the first screen
screen := setup.DefaultScreen(X)
// Create black (foreground) graphic context
foreground, _ := xproto.NewGcontextId(X)
mask := uint32(xproto.GcForeground | xproto.GcGraphicsExposures)
values := []uint32{screen.BlackPixel, 0}
xproto.CreateGC(X, foreground, xproto.Drawable(screen.Root), mask, values)
// Ask for our window's Id
win, _ := xproto.NewWindowId(X)
winDrawable := xproto.Drawable(win)
// Create the window
mask = uint32(xproto.CwBackPixel | xproto.CwEventMask)
values = []uint32{screen.WhitePixel, xproto.EventMaskExposure}
xproto.CreateWindow(X, // Connection
screen.RootDepth, // Depth
win, // Window Id
screen.Root, // Parent Window
0, 0, // x, y
150, 150, // width, height
10, // border_width
xproto.WindowClassInputOutput, // class
screen.RootVisual, // visual
mask, values) // masks
// Map the window on the screen
xproto.MapWindow(X, win)
for {
evt, err := X.WaitForEvent()
switch evt.(type) {
case xproto.ExposeEvent:
/* We draw the points */
xproto.PolyPoint(X, xproto.CoordModeOrigin, winDrawable, foreground, points)
/* We draw the polygonal line */
xproto.PolyLine(X, xproto.CoordModePrevious, winDrawable, foreground, polyline)
/* We draw the segments */
xproto.PolySegment(X, winDrawable, foreground, segments)
/* We draw the rectangles */
xproto.PolyRectangle(X, winDrawable, foreground, rectangles)
/* We draw the arcs */
xproto.PolyArc(X, winDrawable, foreground, arcs)
default:
/* Unknown event type, ignore it */
}
if err != nil {
log.Fatal(err)
}
}
return
}
func main() {
X, err := xgb.NewConn()
if err != nil {
fmt.Println(err)
return
}
// xproto.Setup retrieves the Setup information from the setup bytes
// gathered during connection.
setup := xproto.Setup(X)
// This is the default screen with all its associated info.
screen := setup.DefaultScreen(X)
// Any time a new resource (i.e., a window, pixmap, graphics context, etc.)
// is created, we need to generate a resource identifier.
// If the resource is a window, then use xproto.NewWindowId. If it's for
// a pixmap, then use xproto.NewPixmapId. And so on...
wid, _ := xproto.NewWindowId(X)
// CreateWindow takes a boatload of parameters.
xproto.CreateWindow(X, screen.RootDepth, wid, screen.Root,
0, 0, 500, 500, 0,
xproto.WindowClassInputOutput, screen.RootVisual, 0, []uint32{})
// This call to ChangeWindowAttributes could be factored out and
// included with the above CreateWindow call, but it is left here for
// instructive purposes. It tells X to send us events when the 'structure'
// of the window is changed (i.e., when it is resized, mapped, unmapped,
// etc.) and when a key press or a key release has been made when the
// window has focus.
// We also set the 'BackPixel' to white so that the window isn't butt ugly.
xproto.ChangeWindowAttributes(X, wid,
xproto.CwBackPixel|xproto.CwEventMask,
[]uint32{ // values must be in the order defined by the protocol
0xffffffff,
xproto.EventMaskStructureNotify |
xproto.EventMaskKeyPress |
xproto.EventMaskKeyRelease})
// MapWindow makes the window we've created appear on the screen.
// We demonstrated the use of a 'checked' request here.
// A checked request is a fancy way of saying, "do error handling
// synchronously." Namely, if there is a problem with the MapWindow request,
// we'll get the error *here*. If we were to do a normal unchecked
// request (like the above CreateWindow and ChangeWindowAttributes
// requests), then we would only see the error arrive in the main event
// loop.
//
// Typically, checked requests are useful when you need to make sure they
// succeed. Since they are synchronous, they incur a round trip cost before
// the program can continue, but this is only going to be noticeable if
// you're issuing tons of requests in succession.
//
// Note that requests without replies are by default unchecked while
// requests *with* replies are checked by default.
err = xproto.MapWindowChecked(X, wid).Check()
if err != nil {
fmt.Printf("Checked Error for mapping window %d: %s\n", wid, err)
} else {
fmt.Printf("Map window %d successful!\n", wid)
}
// This is an example of an invalid MapWindow request and what an error
// looks like.
err = xproto.MapWindowChecked(X, 0).Check()
if err != nil {
fmt.Printf("Checked Error for mapping window 0x1: %s\n", err)
} else { // neva
fmt.Printf("Map window 0x1 successful!\n")
}
// Start the main event loop.
for {
// WaitForEvent either returns an event or an error and never both.
// If both are nil, then something went wrong and the loop should be
// halted.
//
// An error can only be seen here as a response to an unchecked
// request.
ev, xerr := X.WaitForEvent()
if ev == nil && xerr == nil {
fmt.Println("Both event and error are nil. Exiting...")
return
}
if ev != nil {
fmt.Printf("Event: %s\n", ev)
}
if xerr != nil {
fmt.Printf("Error: %s\n", xerr)
}
}
}
func main() {
var err error
xConn, err = xgb.NewConn()
if err != nil {
log.Fatal(err)
}
if err = xinerama.Init(xConn); err != nil {
log.Fatal(err)
}
xSetup := xp.Setup(xConn)
if len(xSetup.Roots) != 1 {
log.Fatalf("X setup has unsupported number of roots: %d", len(xSetup.Roots))
}
rootXWin = xSetup.Roots[0].Root
becomeTheWM()
initAtoms()
initDesktop(&xSetup.Roots[0])
initKeyboardMapping()
initScreens()
// Manage any existing windows.
if tree, err := xp.QueryTree(xConn, rootXWin).Reply(); err != nil {
log.Fatal(err)
} else if tree != nil {
for _, c := range tree.Children {
if c == desktopXWin {
continue
}
attrs, err := xp.GetWindowAttributes(xConn, c).Reply()
if attrs == nil || err != nil {
continue
}
if attrs.OverrideRedirect || attrs.MapState == xp.MapStateUnmapped {
continue
}
manage(c, false)
}
}
// Process X events.
eeChan := make(chan xEventOrError)
go func() {
for {
e, err := xConn.WaitForEvent()
eeChan <- xEventOrError{e, err}
}
}()
for {
for i, c := range checkers {
if err := c.Check(); err != nil {
log.Println(err)
}
checkers[i] = nil
}
checkers = checkers[:0]
select {
case f := <-proactiveChan:
f()
case ee := <-eeChan:
if ee.error != nil {
log.Println(ee.error)
continue
}
switch e := ee.event.(type) {
case xp.ButtonPressEvent:
eventTime = e.Time
handleButtonPress(e)
case xp.ButtonReleaseEvent:
eventTime = e.Time
case xp.ClientMessageEvent:
// No-op.
case xp.ConfigureNotifyEvent:
// No-op.
case xp.ConfigureRequestEvent:
handleConfigureRequest(e)
case xp.DestroyNotifyEvent:
// No-op.
case xp.EnterNotifyEvent:
eventTime = e.Time
handleEnterNotify(e)
case xp.ExposeEvent:
handleExpose(e)
case xp.KeyPressEvent:
eventTime, keyRootX, keyRootY, keyState = e.Time, e.RootX, e.RootY, e.State
handleKeyPress(e)
case xp.KeyReleaseEvent:
eventTime, keyRootX, keyRootY, keyState = e.Time, 0, 0, 0
case xp.MapNotifyEvent:
// No-op.
case xp.MappingNotifyEvent:
// No-op.
case xp.MapRequestEvent:
manage(e.Window, true)
case xp.MotionNotifyEvent:
eventTime = e.Time
handleMotionNotify(e)
case xp.UnmapNotifyEvent:
unmanage(e.Window)
default:
log.Printf("unhandled event: %v", ee.event)
}
}
}
}