// Loop runs the main X loop.
func (dpy *Display) Loop(uwin ui.Win) {
win := uwin.(*Window)
awaitEvent := make(chan bool)
go func() {
xfd := int(C.XConnectionNumber(dpy.dpy))
for {
<-awaitEvent
err := waitUntilReadable(xfd)
if err != nil {
log.Fatalf("select %#v", err)
}
dpy.eventReady <- true
}
}()
C.XFlush(dpy.dpy)
awaitEvent <- true
draw := false
for {
nextFrame := dpy.anims.NextFrame(draw)
select {
case <-dpy.eventReady:
dpy.processXEvents(win)
awaitEvent <- true
case <-dpy.drawReady:
draw = true
case t := <-nextFrame:
dpy.anims.Run()
// log.Printf("draw %s", t)
t = t
cr := cairo.Create(win.bufSurface.Surface)
win.delegate.Draw(cr)
win.repaint(0, 0, win.width, win.height)
C.XSync(dpy.dpy, 0)
draw = false
case f := <-dpy.funcs:
f()
case <-dpy.quit:
return
}
}
}
func setStatus(status string) {
C.XStoreName(dpy, C.XDefaultRootWindow(dpy), C.CString(status))
C.XSync(dpy, 1)
}
// Flush and wait for X requests completion
func (x *X) XSync() {
C.XSync(x.dpy, 0)
}
func setStatus(s *C.char) {
C.XStoreName(dpy, C.XDefaultRootWindow(dpy), s)
C.XSync(dpy, 1)
}