git.iko.soy/unity8
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unity8/plugins/Utils/HomeKeyWatcher.cpp
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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 */
17#include "HomeKeyWatcher.h"
19#include <QQuickWindow>
21using namespace UnityUtil;
23HomeKeyWatcher::HomeKeyWatcher(QQuickItem *parent)
24 : HomeKeyWatcher(new Timer, new ElapsedTimer, parent)
28HomeKeyWatcher::HomeKeyWatcher(UnityUtil::AbstractTimer *timer,
29 UnityUtil::AbstractElapsedTimer *elapsedTimer,
30 QQuickItem *parent)
31 : QQuickItem(parent)
32 , m_windowBeingTouched(false)
33 , m_homeKeyPressed(false)
34 , m_windowLastTouchedTimer(elapsedTimer)
35 , m_activationTimer(timer)
37 m_windowLastTouchedTimer->start();
39 connect(this, &QQuickItem::windowChanged,
40 this, &HomeKeyWatcher::setupFilterOnWindow);
42 connect(m_activationTimer, &UnityUtil::AbstractTimer::timeout,
43 this, &HomeKeyWatcher::emitActivatedIfNoTouchesAround);
44 m_activationTimer->setInterval(msecsWithoutTouches);
47HomeKeyWatcher::~HomeKeyWatcher()
49 delete m_windowLastTouchedTimer;
50 delete m_activationTimer;
53bool HomeKeyWatcher::eventFilter(QObject *watched, QEvent *event)
55 Q_ASSERT(!m_filteredWindow.isNull());
56 Q_ASSERT(watched == static_cast<QObject*>(m_filteredWindow.data()));
57 Q_UNUSED(watched);
59 update(event);
61 // We're only monitoring, never filtering out events
62 return false;
65void HomeKeyWatcher::update(QEvent *event)
67 if (event->type() == QEvent::KeyPress) {
68 QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
70 m_homeKeyPressed = true;
72 if (keyEvent->key() == Qt::Key_Super_L && !keyEvent->isAutoRepeat()
73 && !m_windowBeingTouched
74 && m_windowLastTouchedTimer->elapsed() >= msecsWithoutTouches) {
75 m_activationTimer->start();
76 }
78 } else if (event->type() == QEvent::KeyRelease) {
79 QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
81 if (keyEvent->key() == Qt::Key_Super_L) {
82 m_homeKeyPressed = false;
83 }
85 } else if (event->type() == QEvent::TouchBegin) {
87 m_activationTimer->stop();
88 m_windowBeingTouched = true;
90 } else if (event->type() == QEvent::TouchEnd) {
92 m_windowBeingTouched = false;
93 m_windowLastTouchedTimer->start();
94 }
97void HomeKeyWatcher::setupFilterOnWindow(QQuickWindow *window)
99 if (!m_filteredWindow.isNull()) {
100 m_filteredWindow->removeEventFilter(this);
101 m_filteredWindow.clear();
102 }
104 if (window) {
105 window->installEventFilter(this);
106 m_filteredWindow = window;
107 }
110void HomeKeyWatcher::emitActivatedIfNoTouchesAround()
112 if (!m_homeKeyPressed && !m_windowBeingTouched &&
113 (m_windowLastTouchedTimer->elapsed() > msecsWithoutTouches)) {
114 Q_EMIT activated();
115 }