plugins/Ubuntu/Gestures/PressedOutsideNotifier.h · unity8

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unity8/plugins/Ubuntu/Gestures/PressedOutsideNotifier.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.

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#ifndef PRESSED_OUTSIDE_NOTIFIER_H

18#define PRESSED_OUTSIDE_NOTIFIER_H

20#include <QQuickItem>

22#include <QQuickWindow>

23#include <QPointer>

24#include <QTimer>

26#include "UbuntuGesturesGlobal.h"

28/*

29 Notifies when a point, mouse or touch, is pressed outside its area.

31 Only enable it while needed.

32 */

33class UBUNTUGESTURES_EXPORT PressedOutsideNotifier : public QQuickItem {

34 Q_OBJECT

36public:

37 PressedOutsideNotifier(QQuickItem * parent = nullptr);

39 // From QObject

40 bool eventFilter(QObject *watched, QEvent *event) override;

42Q_SIGNALS:

43 void pressedOutside();

45protected:

46 void itemChange(ItemChange change, const ItemChangeData &value) override;

48private Q_SLOTS:

49 void setupOrTearDownEventFiltering();

51private:

52 void setupEventFiltering();

53 void tearDownEventFiltering();

54 void processFilteredTouchBegin(QTouchEvent *event);

56 QPointer<QQuickWindow> m_filteredWindow;

58 // Emits pressedOutside() signal on timeout

59 QTimer m_signalEmissionTimer;

60};

62#endif // PRESSED_OUTSIDE_NOTIFIER_H