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+/*
+ * 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 */