e08f2a4a04
GJS implements a basic signal system that allows monkey-patching JS objects with signal methods resembling the GObject ones. However it's clearly not a good idea to replace the actual GObject methods, so use the proper GObject facilities when inheriting from GObject. https://bugzilla.gnome.org/show_bug.cgi?id=778660
85 lines
2.9 KiB
JavaScript
85 lines
2.9 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Lang = imports.lang;
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const Signals = imports.signals;
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const Meta = imports.gi.Meta;
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const Clutter = imports.gi.Clutter;
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const St = imports.gi.St;
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const Main = imports.ui.main;
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const EDGE_THRESHOLD = 20;
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const DRAG_DISTANCE = 80;
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const EdgeDragAction = new Lang.Class({
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Name: 'EdgeDragAction',
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Extends: Clutter.GestureAction,
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Signals: { 'activated': {} },
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_init : function(side, allowedModes) {
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this.parent();
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this._side = side;
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this._allowedModes = allowedModes;
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this.set_n_touch_points(1);
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global.display.connect('grab-op-begin', Lang.bind(this, function() {
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this.cancel();
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}));
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},
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_getMonitorRect : function (x, y) {
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let rect = new Meta.Rectangle({ x: x - 1, y: y - 1, width: 1, height: 1 });
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let monitorIndex = global.screen.get_monitor_index_for_rect(rect);
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return global.screen.get_monitor_geometry(monitorIndex);
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},
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vfunc_gesture_prepare : function(action, actor) {
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if (this.get_n_current_points() == 0)
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return false;
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if (!(this._allowedModes & Main.actionMode))
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return false;
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let [x, y] = this.get_press_coords(0);
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let monitorRect = this._getMonitorRect(x, y);
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return ((this._side == St.Side.LEFT && x < monitorRect.x + EDGE_THRESHOLD) ||
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(this._side == St.Side.RIGHT && x > monitorRect.x + monitorRect.width - EDGE_THRESHOLD) ||
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(this._side == St.Side.TOP && y < monitorRect.y + EDGE_THRESHOLD) ||
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(this._side == St.Side.BOTTOM && y > monitorRect.y + monitorRect.height - EDGE_THRESHOLD));
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},
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vfunc_gesture_progress : function (action, actor) {
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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 = Math.abs (x - startX);
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let offsetY = Math.abs (y - startY);
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if (offsetX < EDGE_THRESHOLD && offsetY < EDGE_THRESHOLD)
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return true;
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if ((offsetX > offsetY &&
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(this._side == St.Side.TOP || this._side == St.Side.BOTTOM)) ||
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(offsetY > offsetX &&
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(this._side == St.Side.LEFT || this._side == St.Side.RIGHT))) {
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this.cancel();
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return false;
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}
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return true;
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},
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vfunc_gesture_end : function (action, actor) {
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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 monitorRect = this._getMonitorRect(startX, startY);
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if ((this._side == St.Side.TOP && y > monitorRect.y + DRAG_DISTANCE) ||
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(this._side == St.Side.BOTTOM && y < monitorRect.y + monitorRect.height - DRAG_DISTANCE) ||
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(this._side == St.Side.LEFT && x > monitorRect.x + DRAG_DISTANCE) ||
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(this._side == St.Side.RIGHT && x < monitorRect.x + monitorRect.width - DRAG_DISTANCE))
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this.emit('activated');
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}
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});
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