git.iko.soy/unity8
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unity8/plugins/Utils/windowinputfilter.cpp
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1/*
2 * Copyright (C) 2014 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 * Author: Daniel d'Andrada <daniel.dandrada@canonical.com>
17 */
19#include "windowinputfilter.h"
21#include <QQuickWindow>
23WindowInputFilter::WindowInputFilter(QQuickItem *parent)
24 : QQuickItem(parent),
25 m_lastInputTimestamp(0)
27 connect(this, &QQuickItem::windowChanged,
28 this, &WindowInputFilter::setupFilterOnWindow);
29 connect(this, &QQuickItem::enabledChanged,
30 this, &WindowInputFilter::updateFilter);
33bool WindowInputFilter::eventFilter(QObject *watched, QEvent *event)
35 if (!isEnabled()) return false;
37 Q_ASSERT(!m_filteredWindow.isNull());
38 Q_ASSERT(watched == static_cast<QObject*>(m_filteredWindow.data()));
39 Q_UNUSED(watched);
41 QInputEvent *inputEvent = dynamic_cast<QInputEvent*>(event);
42 if (inputEvent) {
43 m_lastInputTimestamp = inputEvent->timestamp();
44 Q_EMIT lastInputTimestampChanged();
45 }
47 if (event->type() == QEvent::KeyPress || event->type() == QEvent::KeyRelease) {
48 // Let QML see this event and decide if it does not want it
49 event->accept();
50 QCoreApplication::sendEvent(this, event);
51 return event->isAccepted();
52 } else {
53 // Not interested
54 return false;
55 }
58void WindowInputFilter::setupFilterOnWindow(QQuickWindow *window)
60 if (isEnabled()) {
61 if (!m_filteredWindow.isNull()) {
62 m_filteredWindow->removeEventFilter(this);
63 m_filteredWindow.clear();
64 }
66 if (window) {
67 window->installEventFilter(this);
68 }
69 }
70 m_filteredWindow = window;
73void WindowInputFilter::updateFilter()
75 if (!m_filteredWindow.isNull()) {
76 if (isEnabled()) {
77 m_filteredWindow->installEventFilter(this);
78 } else {
79 m_filteredWindow->removeEventFilter(this);
80 }
81 }
84ulong WindowInputFilter::lastInputTimestamp() const
86 return m_lastInputTimestamp;