//export smashGoKey
func smashGoKey(winKey unsafe.Pointer, gkey *C.GdkEventKey) {
win := globalPointerStore.Get(winKey).(*Window)
switch gkey.keyval {
case C.GDK_KEY_Shift_L, C.GDK_KEY_Shift_R,
C.GDK_KEY_Control_L, C.GDK_KEY_Control_R,
C.GDK_KEY_Alt_L, C.GDK_KEY_Alt_R,
C.GDK_KEY_Meta_L, C.GDK_KEY_Meta_R,
C.GDK_KEY_Super_L, C.GDK_KEY_Super_R:
return
}
rune := C.gdk_keyval_to_unicode(gkey.keyval)
key := keys.Key{}
key.Sym = keys.Sym(rune)
if gkey.state&C.GDK_CONTROL_MASK != 0 {
key.Mods |= keys.ModControl
}
if gkey.state&C.GDK_MOD1_MASK != 0 {
key.Mods |= keys.ModMeta
}
win.delegate.Key(key)
}
// processXEvents does one read from the X fd, then processes all pending
// events.
func (dpy *Display) processXEvents(win *Window) {
var event C.XEvent
events := C.XEventsQueued(dpy.dpy, C.QueuedAfterReading)
for i := 0; i < int(events); i++ {
C.XNextEvent(dpy.dpy, &event)
e := &event
typ := xEventType(*(*C.int)(unsafe.Pointer(e)))
// log.Printf("typ %s", typ.String())
switch typ {
case C.ConfigureNotify:
e := (*C.XConfigureEvent)(unsafe.Pointer(e))
win.resize(int(e.width), int(e.height))
case C.Expose:
e := (*C.XExposeEvent)(unsafe.Pointer(e))
win.repaint(int(e.x), int(e.y), int(e.width), int(e.height))
case C.KeyPress:
e := (*C.XKeyEvent)(unsafe.Pointer(e))
key := keys.Key{}
if e.state&C.ControlMask != 0 {
key.Mods |= keys.ModControl
}
if e.state&C.Mod1Mask != 0 {
key.Mods |= keys.ModMeta
}
var buf [8]byte
var keysym C.KeySym
C.XLookupString(e, (*C.char)(unsafe.Pointer(&buf)), 8, &keysym, nil)
nulpos := bytes.Index(buf[:], []byte{0})
if nulpos > 0 {
if nulpos > 1 {
log.Printf("xlib: overlong key %q", buf[:nulpos])
}
key.Sym = keys.Sym(buf[0])
if key.Mods&keys.ModControl != 0 {
// Undo Ctl-A => "ASCII control character" mapping.
key.Sym += 'a' - 1
}
} else {
// See /usr/include/X11/keysymdef.h
switch keysym {
case C.XK_Left:
key.Sym = keys.Left
case C.XK_Right:
key.Sym = keys.Right
case C.XK_Up:
key.Sym = keys.Up
case C.XK_Down:
key.Sym = keys.Down
case C.XK_Shift_L, C.XK_Shift_R:
case C.XK_Control_L, C.XK_Control_R:
case C.XK_Meta_L, C.XK_Meta_R:
case C.XK_Alt_L, C.XK_Alt_R:
case C.XK_Super_L, C.XK_Super_R:
case C.XK_Hyper_L, C.XK_Hyper_R:
case C.XK_Caps_Lock:
// ignore for now
default:
log.Printf("xlib: unhandled keysym %#v: %#v", keysym, e)
}
}
win.delegate.Key(key)
case C.KeyRelease:
// ignore
case C.ButtonPress:
e := (*C.XButtonEvent)(unsafe.Pointer(e))
switch e.button {
case 4, 5:
dy := -1
if e.button == 5 {
dy = 1
}
win.delegate.Scroll(dy)
case 6, 7:
// TODO horizontal scroll.
default:
log.Printf("unhandled button %#v", e)
}
case C.MapNotify:
win.delegate.Mapped()
case C.ReparentNotify:
// ignore
default:
if typ > C.GenericEvent {
// Cairo triggers shm events, which show up as extension
// events with greater ids than C.GenericEvent.
continue
}
log.Printf("unhandled ev %s", typ.String())
}
}
C.XFlush(dpy.dpy)
}