plugins/Utils/windowkeysfilter.h · unity8

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unity8/plugins/Utils/windowkeysfilter.h

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1/*

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.

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/>.

16 * Author: Daniel d'Andrada <daniel.dandrada@canonical.com>

17 */

19#ifndef UNITY_WINDOWKEYSFILTER_H

20#define UNITY_WINDOWKEYSFILTER_H

22#include <QQuickItem>

23#include <QPointer>

26 Receives all key events that arrive in the QQuickWindow where this item is placed.

28 Rejected key events will be allowed to be processed normally by the QQuickWindow whereas

29 accepted ones will be filtered out. Events are accepted by default, so make sure you reject

30 the keys you're not interested in.

32 If more than one WindowKeysFilter exist in the same QML scene (and thus in the same QQuickWindow)

33 they will be called in the order of creation, which can be tricky to assess. So the best practice

34 is to have at most one WindowKeysFilter per QML scene.

35 */

36class WindowKeysFilter : public QQuickItem

38 Q_OBJECT

39public:

40 WindowKeysFilter(QQuickItem *parent = 0);

42 bool eventFilter(QObject *watched, QEvent *event);

44private Q_SLOTS:

45 void setupFilterOnWindow(QQuickWindow *window);

47private:

48 QPointer<QQuickWindow> m_filteredWindow;

51#endif // UNITY_WINDOWKEYSFILTER_H