src/MouseTouchAdaptor.h · unity8

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unity8/src/MouseTouchAdaptor.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 *

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

17 */

19#ifndef MOUSE_TOUCH_ADAPTOR_H

20#define MOUSE_TOUCH_ADAPTOR_H

22#include <QtCore/QAbstractNativeEventFilter>

23#include <QWindow>

25#include <xcb/xcb.h>

27class QMouseEvent;

28class QTouchDevice;

30// Transforms QMouseEvents into single-finger QTouchEvents.

31class MouseTouchAdaptor : public QObject, public QAbstractNativeEventFilter {

32 Q_OBJECT

33public:

34 virtual ~MouseTouchAdaptor();

36 static MouseTouchAdaptor* instance();

38 // Filters mouse events and posts the equivalent QTouchEvents.

39 bool nativeEventFilter(const QByteArray & eventType, void *message, long *result) override;

41 Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)

43 bool enabled() const;

44 void setEnabled(bool value);

46Q_SIGNALS:

47 void enabledChanged(bool value);

49private:

50 MouseTouchAdaptor();

51 void fetchXInput2Info();

52 bool xi2HandleEvent(xcb_ge_event_t *event);

54 bool handleButtonPress(WId windowId, uint32_t detail, uint32_t modifiers, int x, int y);

55 bool handleButtonRelease(WId windowId, uint32_t detail, uint32_t modifiers, int x, int y);

56 bool handleMotionNotify(WId windowId, uint32_t modifiers, int x, int y);

57 QWindow *findQWindowWithXWindowID(WId windowId);

59 QTouchDevice *m_touchDevice;

60 bool m_leftButtonIsPressed;

61 bool m_triPressModifier;

62 bool m_quadPressModifier;

65 bool m_enabled;

67 bool m_xi2Enabled{false};

68 int m_xi2Minor{-1};

69 int m_xiOpCode, m_xiEventBase, m_xiErrorBase;

70};

72#endif // MOUSE_TOUCH_ADAPTOR_H