// keyResponse translates key board input into two different actions: canceling
// the current prompt and making a choice in the cycle prompt.
// Canceling a prompt corresponds to the "CycleConfig.CancelKey" being pressed.
// Making a choice in the cycle prompt corresponds to releasing all of the
// modifiers used to initiate showing the prompt (when "CycleConfig.AutoChoose"
// is true).
// If CancelKey is empty, then no cancel key functionality is provided.
// If AutoChoose is false, then releasing the modifiers will have no effect.
//
// For thos interested in the X details:
// The prompt cycle dialog needs to choose the selection when the
// modifiers (i.e., "alt" in "alt-tab") are released.
// The only way to do this (generally) is to check the raw KeyRelease event.
// Namely, if the keycode *released* is a modifier, we have to and-out
// that modifier from the key release event data. If the modifiers
// remaining aren't up to snuff with the original grabbed modifiers,
// then we can finally "choose" the selection.
// TL;DR - This is how we "exit" the prompt cycle dialog.
func (cycle *Cycle) keyResponse() xevent.KeyReleaseFun {
f := func(X *xgbutil.XUtil, ev xevent.KeyReleaseEvent) {
if !cycle.showing {
return
}
mods, kc := keybind.DeduceKeyInfo(ev.State, ev.Detail)
// If the key release is the cancel key, quit the prompt and
// don't do anything.
if keybind.KeyMatch(X, cycle.config.CancelKey, mods, kc) {
cycle.Hide()
return
}
mods &= ^keybind.ModGet(X, ev.Detail)
if cycle.grabMods > 0 {
if mods&cycle.grabMods == 0 {
cycle.Choose()
}
} else {
if keybind.KeyMatch(X, cycle.config.ConfirmKey, mods, kc) {
cycle.Choose()
}
}
}
return xevent.KeyReleaseFun(f)
}
func grabKeyboardAndMouse(m *Manager) {
if m == nil {
return
}
//go func() {
X, err := xgbutil.NewConn()
if err != nil {
logger.Info("Get New Connection Failed:", err)
return
}
keybind.Initialize(X)
mousebind.Initialize(X)
err = keybind.GrabKeyboard(X, X.RootWin())
if err != nil {
logger.Info("Grab Keyboard Failed:", err)
return
}
grabAllMouseButton(X)
xevent.ButtonPressFun(
func(X *xgbutil.XUtil, e xevent.ButtonPressEvent) {
dbus.Emit(m, "KeyReleaseEvent", "")
ungrabAllMouseButton(X)
keybind.UngrabKeyboard(X)
logger.Info("Button Press Event")
xevent.Quit(X)
}).Connect(X, X.RootWin())
xevent.KeyPressFun(
func(X *xgbutil.XUtil, e xevent.KeyPressEvent) {
value := parseKeyEnvent(X, e.State, e.Detail)
pressKeyStr = value
dbus.Emit(m, "KeyPressEvent", value)
}).Connect(X, X.RootWin())
xevent.KeyReleaseFun(
func(X *xgbutil.XUtil, e xevent.KeyReleaseEvent) {
if strings.ToLower(pressKeyStr) == "super_l" ||
strings.ToLower(pressKeyStr) == "super_r" {
pressKeyStr = "Super"
}
dbus.Emit(m, "KeyReleaseEvent", pressKeyStr)
pressKeyStr = ""
ungrabAllMouseButton(X)
keybind.UngrabKeyboard(X)
logger.Infof("Key: %s\n", pressKeyStr)
xevent.Quit(X)
}).Connect(X, X.RootWin())
xevent.Main(X)
//}()
}
// connect is essentially 'Connect' for either KeyPress or KeyRelease events.
// Namely, it parses the key string, issues a grab request if necessary,
// sets up the appropriate event handlers for the main event loop, and attaches
// the callback to the keybinding state.
func connect(xu *xgbutil.XUtil, callback xgbutil.CallbackKey,
evtype int, win xproto.Window, keyStr string, grab, reconnect bool) error {
// Get the mods/key first
mods, keycodes, err := ParseString(xu, keyStr)
if err != nil {
return err
}
// Only do the grab if we haven't yet on this window.
for _, keycode := range keycodes {
if grab && keyBindGrabs(xu, evtype, win, mods, keycode) == 0 {
if err := GrabChecked(xu, win, mods, keycode); err != nil {
// If a bad access, let's be nice and give a good error message.
switch err.(type) {
case xproto.AccessError:
return fmt.Errorf("Got a bad access error when trying to "+
"bind '%s'. This usually means another client has "+
"already grabbed this keybinding.", keyStr)
default:
return fmt.Errorf("Could not bind '%s' because: %s",
keyStr, err)
}
}
}
// If we've never grabbed anything on this window before, we need to
// make sure we can respond to it in the main event loop.
// Never do this if we're reconnecting.
if !reconnect {
var allCb xgbutil.Callback
if evtype == xevent.KeyPress {
allCb = xevent.KeyPressFun(runKeyPressCallbacks)
} else {
allCb = xevent.KeyReleaseFun(runKeyReleaseCallbacks)
}
// If this is the first Key{Press|Release}Event on this window,
// then we need to listen to Key{Press|Release} events in the main
// loop.
if !connectedKeyBind(xu, evtype, win) {
allCb.Connect(xu, win)
}
}
// Finally, attach the callback.
attachKeyBindCallback(xu, evtype, win, mods, keycode, callback)
}
// Keep track of all unique key connections.
if !reconnect {
addKeyString(xu, callback, evtype, win, keyStr, grab)
}
return nil
}
func (m *Manager) listenKeyEvents() {
xevent.KeyPressFun(
func(X *xgbutil.XUtil, e xevent.KeyPressEvent) {
modStr := keybind.ModifierString(e.State)
keyStr := keybind.LookupString(X, e.State, e.Detail)
if e.Detail == 65 {
keyStr = "space"
}
logger.Infof("KeyStr: %s, modStr: %s", keyStr, modStr)
if !m.mediaKey.emitMediaSignal(modStr, keyStr, true) {
modStr = deleteSpecialMod(modStr)
value := ""
if len(modStr) < 1 {
value = keyStr
} else {
value = modStr + "-" + keyStr
}
info, ok := newKeycodeInfo(value)
if !ok {
return
}
if v, ok := getExecCommand(info); ok {
// 不然按键会阻塞，直到程序推出
go doAction(v)
}
}
}).Connect(X, X.RootWin())
xevent.KeyReleaseFun(
func(X *xgbutil.XUtil, e xevent.KeyReleaseEvent) {
modStr := keybind.ModifierString(e.State)
keyStr := keybind.LookupString(X, e.State, e.Detail)
if e.Detail == 65 {
keyStr = "space"
}
//modStr = deleteSpecialMod(modStr)
m.mediaKey.emitMediaSignal(modStr, keyStr, false)
}).Connect(X, X.RootWin())
}