1/*
2 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
3 * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef GestureRecognizer_h
28#define GestureRecognizer_h
29
30#if ENABLE(TOUCH_EVENTS)
31#include "EflTypedefs.h"
32#include <WebCore/IntPoint.h>
33#include <WebKit/WKEventEfl.h>
34
35class EwkView;
36
37namespace WebKit {
38
39class GestureHandler;
40
41class GestureRecognizer {
42public:
43    explicit GestureRecognizer(EwkView*);
44    ~GestureRecognizer();
45
46    void processTouchEvent(WKTouchEventRef);
47    void reset();
48
49private:
50    static Eina_Bool doubleTapTimerCallback(void*);
51    static Eina_Bool tapAndHoldTimerCallback(void*);
52
53    bool exceedsPanThreshold(const WebCore::IntPoint& first, const WebCore::IntPoint& last) const;
54    bool exceedsDoubleTapThreshold(const WebCore::IntPoint& first, const WebCore::IntPoint& last) const;
55
56    // State functions.
57    void noGesture(WKTouchEventRef);
58    void singleTapGesture(WKTouchEventRef);
59    void doubleTapGesture(WKTouchEventRef);
60    void panGesture(WKTouchEventRef);
61    void pinchGesture(WKTouchEventRef);
62
63    void stopTapTimers();
64
65    static const double s_doubleTapTimeoutInSeconds;
66    static const double s_tapAndHoldTimeoutInSeconds;
67    static const int s_squaredDoubleTapThreshold;
68    static const int s_squaredPanThreshold;
69
70    typedef void (GestureRecognizer::*RecognizerFunction)(WKTouchEventRef);
71    RecognizerFunction m_recognizerFunction;
72
73    std::unique_ptr<WebKit::GestureHandler> m_gestureHandler;
74    Ecore_Timer* m_tapAndHoldTimer;
75    Ecore_Timer* m_doubleTapTimer;
76    WebCore::IntPoint m_firstPressedPoint;
77};
78
79} // namespace WebKit
80
81#endif // ENABLE(TOUCH_EVENTS)
82
83#endif // GestureRecognizer_h
84