Exemplo n.º 1
0
func initKeyboardMapping() {
	const (
		keyLo = 8
		keyHi = 255
	)
	km, err := xp.GetKeyboardMapping(xConn, keyLo, keyHi-keyLo+1).Reply()
	if err != nil {
		log.Fatal(err)
	}
	if km == nil {
		log.Fatal("couldn't get keyboard mapping")
	}
	n := int(km.KeysymsPerKeycode)
	if n < 2 {
		log.Fatalf("too few keysyms per keycode: %d", n)
	}
	for i := keyLo; i <= keyHi; i++ {
		keysyms[i][0] = km.Keysyms[(i-keyLo)*n+0]
		keysyms[i][1] = km.Keysyms[(i-keyLo)*n+1]
	}

	toGrabs := []xp.Keysym{wmKeysym}
	if doAudioActions {
		toGrabs = append(toGrabs, xkAudioLowerVolume, xkAudioMute, xkAudioRaiseVolume)
	}
	for _, toGrab := range toGrabs {
		keycode := xp.Keycode(0)
		for i := keyLo; i <= keyHi; i++ {
			if keysyms[i][0] == toGrab || keysyms[i][1] == toGrab {
				keycode = xp.Keycode(i)
			}
		}
		if keycode == 0 {
			if toGrab != wmKeysym {
				continue
			}
			log.Fatalf("could not find the window manager key %s", keysymString(toGrab))
		}
		if err := xp.GrabKeyChecked(xConn, false, rootXWin, xp.ModMaskAny, keycode,
			xp.GrabModeAsync, xp.GrabModeAsync).Check(); err != nil {
			log.Fatal(err)
		}
	}

	// Disable Caps Lock if it is the wmKeysym.
	if wmKeysym == xkCapsLock {
		// On Ubuntu 12.04, disabling Caps Lock involved the equivalent of
		// `xmodmap -e "clear lock"`. On Ubuntu 14.04, XKB has replaced xmodmap,
		// possibly because this facilitates per-window keyboard layouts, so the
		// equivalent of `xmodmap -e "clear lock"` doesn't work. As of October
		// 2014, github.com/BurntSushi/xgb doesn't support XKB, so we exec the
		// setxkbmap program instead of speaking the X11 protocol directly to
		// disable Caps Lock.
		if err := exec.Command("setxkbmap", "-option", "caps:none").Run(); err != nil {
			log.Fatalf("setxkbmap failed: %v", err)
		}
	}
}
Exemplo n.º 2
0
func GrabKeyChecked(c *xgb.Conn, win xproto.Window, mods uint16, key xproto.Keycode) error {
	var err error
	for _, m := range IgnoreMods {
		err = xproto.GrabKeyChecked(c, true, win, mods|m, key, xproto.GrabModeAsync, xproto.GrabModeAsync).Check()
		if err != nil {
			return err
		}
	}
	return nil
}
Exemplo n.º 3
0
// GrabChecked Grabs a key with mods on a particular window.
// This is the same as Grab, except that it issue a checked request.
// Which means that an error could be returned and handled on the spot.
// (Checked requests are slower than unchecked requests.)
// This will also grab all combinations of modifiers found in xevent.IgnoreMods.
func GrabChecked(xu *xgbutil.XUtil, win xproto.Window,
	mods uint16, key xproto.Keycode) error {

	var err error
	for _, m := range xevent.IgnoreMods {
		err = xproto.GrabKeyChecked(xu.Conn(), true, win, mods|m, key,
			xproto.GrabModeAsync, xproto.GrabModeAsync).Check()
		if err != nil {
			return err
		}
	}
	return nil
}