git.iko.soy/unity8
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unity8/plugins/Utils/windowkeysfilter.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 "windowkeysfilter.h"
21#include <QQuickWindow>
23WindowKeysFilter::WindowKeysFilter(QQuickItem *parent)
24 : QQuickItem(parent),
25 m_currentEventTimestamp(0)
27 connect(this, &QQuickItem::windowChanged,
28 this, &WindowKeysFilter::setupFilterOnWindow);
31bool WindowKeysFilter::eventFilter(QObject *watched, QEvent *event)
33 Q_ASSERT(!m_filteredWindow.isNull());
34 Q_ASSERT(watched == static_cast<QObject*>(m_filteredWindow.data()));
35 Q_UNUSED(watched);
37 if (event->type() == QEvent::KeyPress || event->type() == QEvent::KeyRelease) {
38 // Let QML see this event and decide if it does not want it
39 event->accept();
41 m_currentEventTimestamp = static_cast<QInputEvent*>(event)->timestamp();
42 Q_EMIT currentEventTimestampChanged();
44 QCoreApplication::sendEvent(this, event);
46 m_currentEventTimestamp = 0;
47 Q_EMIT currentEventTimestampChanged();
49 return event->isAccepted();
50 } else {
51 // Not interested
52 return false;
53 }
56void WindowKeysFilter::setupFilterOnWindow(QQuickWindow *window)
58 if (!m_filteredWindow.isNull()) {
59 m_filteredWindow->removeEventFilter(this);
60 m_filteredWindow.clear();
61 }
63 if (window) {
64 window->installEventFilter(this);
65 m_filteredWindow = window;
66 }
69ulong WindowKeysFilter::currentEventTimestamp() const
71 return m_currentEventTimestamp;