2 * Copyright (C) 2011 Benjamin Poulain <benjamin@webkit.org>
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
26 #ifndef QtPinchGestureRecognizer_h
27 #define QtPinchGestureRecognizer_h
29 #include "QtGestureRecognizer.h"
31 #include <QTouchEvent>
32 #include <QtCore/QList>
33 #include <QtCore/QPointF>
41 class QtPinchGestureRecognizer : private QtGestureRecognizer {
43 struct TouchPointInformation {
44 inline TouchPointInformation();
45 inline TouchPointInformation(const QTouchEvent::TouchPoint&);
46 inline bool isValid() const;
49 QPointF initialScreenPosition;
50 QPointF initialPosition;
53 QtPinchGestureRecognizer(ViewportInteractionEngine*);
54 bool recognize(const QTouchEvent*);
58 void initializeGesture(const QList<QTouchEvent::TouchPoint>& touchPoints);
60 TouchPointInformation m_point1;
61 TouchPointInformation m_point2;
64 inline QtPinchGestureRecognizer::TouchPointInformation::TouchPointInformation()
69 inline QtPinchGestureRecognizer::TouchPointInformation::TouchPointInformation(const QTouchEvent::TouchPoint& touchPoint)
71 , initialScreenPosition(touchPoint.screenPos())
72 , initialPosition(touchPoint.pos())
76 inline bool QtPinchGestureRecognizer::TouchPointInformation::isValid() const
83 #endif /* QtPinchGestureRecognizer_h */