func init() {
var err error
xwin, err = xgb.Dial(os.Getenv("DISPLAY"))
if err != nil {
log.Printf("x11: error: cannot connect: %v\n", err)
os.Exit(1)
}
// Prepare the WmDeleteWindow event
protName := "WM_PROTOCOLS"
wmProt, _ := xwin.InternAtom(false, protName)
wmProtocols = wmProt.Atom
atomName := "ATOM"
atomTp, _ := xwin.InternAtom(false, atomName)
atomType = atomTp.Atom
wmDel := "WM_DELETE_WINDOW"
atmDel, _ := xwin.InternAtom(false, wmDel)
atomDel = atmDel.Atom
wmDelete = make([]byte, 4)
wmDelete[0] = byte(atomDel)
wmDelete[1] = byte(atomDel >> 8)
wmDelete[2] = byte(atomDel >> 16)
wmDelete[3] = byte(atomDel >> 32)
// Set intern messages
atmMsg, _ := xwin.InternAtom(false, "SPARTAMSG")
atomMsg = atmMsg.Atom
// Prepare pixel maps
s := xwin.DefaultScreen()
pixelMap[getColorCode(color.RGBA{R: 255, G: 255, B: 255})] = s.WhitePixel
pixelMap[getColorCode(color.RGBA{})] = s.BlackPixel
setKeyboard()
}
func main() {
c, err := xgb.Dial(os.Getenv("DISPLAY"))
if err != nil {
fmt.Printf("cannot connect: %v\n", err)
os.Exit(1)
}
defer c.Close()
fmt.Printf("vendor = %q\n", string(c.Setup.Vendor))
win := c.NewId()
gc := c.NewId()
s := c.DefaultScreen()
c.CreateWindow(0, win, s.Root, 150, 150, 200, 200, 0, 0, 0, 0, nil)
c.ChangeWindowAttributes(win, xgb.CWBackPixel|xgb.CWEventMask,
[]uint32{
s.BlackPixel,
xgb.EventMaskExposure | xgb.EventMaskKeyRelease,
})
c.CreateGC(gc, win, xgb.GCForeground, []uint32{s.WhitePixel})
c.MapWindow(win)
atom, _ := c.InternAtom(false, "HELLO")
fmt.Printf("atom = %d\n", atom.Atom)
// Set WmDelete event
protName := "WM_PROTOCOLS"
wmProt, _ := c.InternAtom(false, protName)
wmProtocols := wmProt.Atom
fmt.Printf("atom wmProtocols = %d\n", wmProtocols)
atomName := "ATOM"
atomTp, _ := c.InternAtom(false, atomName)
atomType := atomTp.Atom
fmt.Printf("atom atom = %d\n", atomType)
wmDel := "WM_DELETE_WINDOW"
atmDel, _ := c.InternAtom(false, wmDel)
atomDel := atmDel.Atom
fmt.Printf("atom wmDelete = %d\n", atomDel)
wmDelete := make([]byte, 4)
wmDelete[0] = byte(atomDel)
wmDelete[1] = byte(atomDel >> 8)
wmDelete[2] = byte(atomDel >> 16)
wmDelete[3] = byte(atomDel >> 32)
points := make([]xgb.Point, 2)
points[0] = xgb.Point{5, 5}
points[1] = xgb.Point{100, 120}
c.ChangeProperty(xgb.PropModeReplace, win, xgb.AtomWmName, xgb.AtomString,
8, []byte("demo window"))
c.ChangeProperty(xgb.PropModeReplace, win, wmProtocols, atomType, 32, wmDelete)
fontpaths, _ := c.GetFontPath()
for _, fontpath := range fontpaths.Path {
fmt.Printf("fontpath = %q\n", fontpath.Name)
}
hosts, _ := c.ListHosts()
for _, host := range hosts.Hosts {
fmt.Printf("hosts = %q\n", host.Address)
}
ecookie := c.ListExtensionsRequest()
exts, _ := c.ListExtensionsReply(ecookie)
for _, name := range exts.Names {
fmt.Printf("exts = %q\n", name.Name)
}
for {
reply, err := c.WaitForEvent()
if err != nil {
fmt.Printf("error: %v\n", err)
os.Exit(1)
}
fmt.Printf("event %T\n", reply)
switch event := reply.(type) {
case xgb.ClientMessageEvent:
if event.Type != wmProtocols {
continue
}
if xgb.Id(event.Data.Data32[0]) != atomDel {
continue
}
return
case xgb.ExposeEvent:
c.PolyLine(xgb.CoordModeOrigin, win, gc, points)
case xgb.KeyReleaseEvent:
fmt.Printf("key release!\n")
points[0].X = event.EventX
points[0].Y = event.EventY
c.PolyLine(xgb.CoordModeOrigin, win, gc, points)
c.Bell(75)
}
}
}