53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Signals = imports.signals;
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const Lang = imports.lang;
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const Meta = imports.gi.Meta;
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const Clutter = imports.gi.Clutter;
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let MOTION_THRESHOLD = 50;
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const WorkspaceSwitchAction = new Lang.Class({
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Name: 'WorkspaceSwitchAction',
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Extends: Clutter.GestureAction,
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_init : function() {
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this.parent();
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this.set_n_touch_points (4);
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global.display.connect('grab-op-begin', Lang.bind(this, this.cancel));
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global.display.connect('grab-op-end', Lang.bind(this, this.cancel));
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},
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vfunc_gesture_prepare : function(action, actor) {
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return this.get_n_current_points() == this.get_n_touch_points();
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},
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vfunc_gesture_end : function(action, actor) {
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// Just check one touchpoint here
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let [startX, startY] = this.get_press_coords(0);
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let [x, y] = this.get_motion_coords(0);
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let offsetX = x - startX;
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let offsetY = y - startY;
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let direction;
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if (Math.abs(offsetX) < MOTION_THRESHOLD &&
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Math.abs(offsetY) < MOTION_THRESHOLD)
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return;
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if (Math.abs(offsetY) > Math.abs(offsetX)) {
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if (offsetY > 0)
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direction = Meta.MotionDirection.UP;
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else
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direction = Meta.MotionDirection.DOWN;
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} else {
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if (offsetX > 0)
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direction = Meta.MotionDirection.LEFT;
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else
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direction = Meta.MotionDirection.RIGHT;
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}
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this.emit('activated', direction);
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}
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});
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Signals.addSignalMethods(WorkspaceSwitchAction.prototype);
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