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Diffstat (limited to 'Source/WebKit2/UIProcess/qt/QtPinchGestureRecognizer.h')
| -rw-r--r-- | Source/WebKit2/UIProcess/qt/QtPinchGestureRecognizer.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/Source/WebKit2/UIProcess/qt/QtPinchGestureRecognizer.h b/Source/WebKit2/UIProcess/qt/QtPinchGestureRecognizer.h new file mode 100644 index 000000000..7dd3d911b --- /dev/null +++ b/Source/WebKit2/UIProcess/qt/QtPinchGestureRecognizer.h @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2011 Benjamin Poulain <benjamin@webkit.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef QtPinchGestureRecognizer_h +#define QtPinchGestureRecognizer_h + +#include "QtGestureRecognizer.h" + +#include <QTouchEvent> +#include <QtCore/QList> +#include <QtCore/QPointF> + +QT_BEGIN_NAMESPACE +class QTouchEvent; +QT_END_NAMESPACE + +namespace WebKit { + +class QtPinchGestureRecognizer : public QtGestureRecognizer { +public: + struct TouchPointInformation { + inline TouchPointInformation(); + inline TouchPointInformation(const QTouchEvent::TouchPoint&); + inline bool isValid() const; + + int id; + QPointF initialScreenPosition; + QPointF initialPosition; + }; + + QtPinchGestureRecognizer(QtWebPageEventHandler*); + bool recognize(const QTouchEvent*); + void reset(); + +private: + void initializeGesture(const QList<QTouchEvent::TouchPoint>& touchPoints); + + TouchPointInformation m_point1; + TouchPointInformation m_point2; +}; + +inline QtPinchGestureRecognizer::TouchPointInformation::TouchPointInformation() + : id(-1) +{ +} + +inline QtPinchGestureRecognizer::TouchPointInformation::TouchPointInformation(const QTouchEvent::TouchPoint& touchPoint) + : id(touchPoint.id()) + , initialScreenPosition(touchPoint.screenPos()) + , initialPosition(touchPoint.pos()) +{ +} + +inline bool QtPinchGestureRecognizer::TouchPointInformation::isValid() const +{ + return id >= 0; +} + +} + +#endif /* QtPinchGestureRecognizer_h */ |
