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/*
* Copyright (C) 2014 Igalia S.L.
*
* 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 GestureController_h
#define GestureController_h
#if HAVE(GTK_GESTURES)
#include <WebCore/FloatPoint.h>
#include <wtf/Noncopyable.h>
#include <wtf/RunLoop.h>
#include <wtf/glib/GRefPtr.h>
typedef union _GdkEvent GdkEvent;
typedef struct _GdkEventSequence GdkEventSequence;
typedef struct _GtkGesture GtkGesture;
namespace WebKit {
class WebPageProxy;
class GestureController {
WTF_MAKE_NONCOPYABLE(GestureController);
public:
GestureController(WebPageProxy&);
bool isProcessingGestures() const;
bool handleEvent(const GdkEvent*);
private:
class Gesture {
public:
bool isActive() const;
void handleEvent(const GdkEvent*);
protected:
Gesture(GtkGesture*, WebPageProxy&);
GRefPtr<GtkGesture> m_gesture;
WebPageProxy& m_page;
};
class DragGesture final : public Gesture {
public:
DragGesture(WebPageProxy&);
private:
void handleDrag(const GdkEvent*, double x, double y);
void handleTap(const GdkEvent*);
void longPressFired();
static void begin(DragGesture*, double x, double y, GtkGesture*);
static void update(DragGesture*, double x, double y, GtkGesture*);
static void end(DragGesture*, GdkEventSequence*, GtkGesture*);
WebCore::FloatPoint m_start;
WebCore::FloatPoint m_offset;
RunLoop::Timer<DragGesture> m_longPressTimeout;
GRefPtr<GtkGesture> m_longPress;
bool m_inDrag;
};
class ZoomGesture final : public Gesture {
public:
ZoomGesture(WebPageProxy&);
private:
WebCore::IntPoint center() const;
void handleZoom();
static void begin(ZoomGesture*, GdkEventSequence*, GtkGesture*);
static void scaleChanged(ZoomGesture*, double scale, GtkGesture*);
gdouble m_initialScale;
gdouble m_scale;
WebCore::IntPoint m_initialPoint;
WebCore::IntPoint m_viewPoint;
RunLoop::Timer<ZoomGesture> m_idle;
};
DragGesture m_dragGesture;
ZoomGesture m_zoomGesture;
};
} // namespace WebKit
#endif // HAVE(GTK_GESTURES)
#endif // GestureController_h
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