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EdgeBarrierController.qml
1/*
2 * Copyright (C) 2015 Canonical Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17import QtQuick 2.12
18import Utils 0.1 // For EdgeBarrierSettings
19
20MouseArea {
21 id: root
22
23 hoverEnabled: true
24
25 // Edge push progress
26 // Value range is [0.0, 1.0]
27 readonly property real progress: Math.min(Math.max(0.0, _accumulatedPush / EdgeBarrierSettings.pushThreshold), 1.0)
28
29 // Emitted when progress reaches 1.0
30 // Should trigger the action associated with this edge
31 signal passed()
32
33 onPressed: mouse.accepted = false;
34
35 function push(amount) {
36 if (!root._containsMouse) {
37 console.warn("pushing right edge without mouse actually being at right edge!")
38 return;
39 }
40
41 if (_accumulatedPush === EdgeBarrierSettings.pushThreshold) {
42 // NO-OP
43 return;
44 }
45
46 if (_accumulatedPush + amount > EdgeBarrierSettings.pushThreshold) {
47 _accumulatedPush = EdgeBarrierSettings.pushThreshold;
48 } else {
49 _accumulatedPush += amount;
50 }
51
52 if (_accumulatedPush === EdgeBarrierSettings.pushThreshold) {
53 passed();
54 }
55 }
56
57 onEnabledChanged: {
58 if (!enabled) {
59 // reset
60 _accumulatedPush = 0;
61 }
62 }
63
64 // to be overwritten by tests
65 property bool _containsMouse: root.containsMouse
66 on_ContainsMouseChanged: {
67 if (!_containsMouse) {
68 // reset
69 _accumulatedPush = 0;
70 }
71 }
72
73 property real _accumulatedPush: 0
74}