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windowManager: Add TouchpadWorkspaceSwitchAction

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This object (not really a Clutter.GestureAction) sets up a captured-event
handler, which exclusively looks for 4 finger touchpad swipes, emitting
an ::activated signal under the same terms than WorkspaceSwitchAction.

https://bugzilla.gnome.org/show_bug.cgi?id=752250
This commit is contained in:
Carlos Garnacho 2015-07-22 21:19:18 +02:00
parent 804563d5b2
commit f3ecfab378
1 changed files with 60 additions and 0 deletions
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60
js/ui/windowManager.js
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@ -477,6 +477,62 @@ const TilePreview = new Lang.Class({
}
});
const TouchpadWorkspaceSwitchAction = new Lang.Class({
Name: 'TouchpadWorkspaceSwitchAction',
_init: function(actor) {
this._dx = 0;
this._dy = 0;
actor.connect('captured-event', Lang.bind(this, this._handleEvent));
},
_checkActivated: function() {
const MOTION_THRESHOLD = 50;
let allowedModes = Shell.ActionMode.NORMAL | Shell.ActionMode.OVERVIEW;
let dir;
if ((allowedModes & Main.actionMode) == 0)
return;
if (this._dy < -MOTION_THRESHOLD)
dir = Meta.MotionDirection.DOWN;
else if (this._dy > MOTION_THRESHOLD)
dir = Meta.MotionDirection.UP;
else if (this._dx < -MOTION_THRESHOLD)
dir = Meta.MotionDirection.RIGHT;
else if (this._dx > MOTION_THRESHOLD)
dir = Meta.MotionDirection.LEFT;
else
return;
this.emit('activated', dir);
},
_handleEvent: function(actor, event) {
if (event.type() != Clutter.EventType.TOUCHPAD_SWIPE)
return Clutter.EVENT_PROPAGATE;
if (event.get_gesture_swipe_finger_count() != 4)
return Clutter.EVENT_PROPAGATE;
if (event.get_gesture_phase() == Clutter.TouchpadGesturePhase.UPDATE) {
let [dx, dy] = event.get_gesture_motion_delta(event);
this._dx += dx;
this._dy += dy;
} else {
if (event.get_gesture_phase() == Clutter.TouchpadGesturePhase.END)
this._checkActivated();
this._dx = 0;
this._dy = 0;
}
return Clutter.EVENT_STOP;
}
});
Signals.addSignalMethods(TouchpadWorkspaceSwitchAction.prototype);
const WorkspaceSwitchAction = new Lang.Class({
Name: 'WorkspaceSwitchAction',
Extends: Clutter.SwipeAction,
@ -869,6 +925,10 @@ const WindowManager = new Lang.Class({
gesture.connect('activated', Lang.bind(this, this._actionSwitchWorkspace));
global.stage.add_action(gesture);
// This is not a normal Clutter.GestureAction, doesn't need add_action()
gesture = new TouchpadWorkspaceSwitchAction(global.stage);
gesture.connect('activated', Lang.bind(this, this._actionSwitchWorkspace));
gesture = new AppSwitchAction();
gesture.connect('activated', Lang.bind(this, this._switchApp));
global.stage.add_action(gesture);