1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
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 AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebFlingAnimatorToGestureCurveAdapter_h
27#define WebFlingAnimatorToGestureCurveAdapter_h
28
29#include "FloatPoint.h"
30#include "IntPoint.h"
31#include "IntRect.h"
32#include "PlatformGestureCurve.h"
33#include "PlatformGestureCurveTarget.h"
34#include "WebFlingAnimator.h"
35#include <public/Platform.h>
36
37namespace WebKit {
38
39class WebFlingAnimatorToGestureCurveAdapter : public WebCore::PlatformGestureCurve {
40public:
41 static PassOwnPtr<PlatformGestureCurve> create(const WebCore::FloatPoint& velocity, const WebCore::IntRect& range, PassOwnPtr<WebFlingAnimator> animator)
42 {
43 return adoptPtr(new WebFlingAnimatorToGestureCurveAdapter(velocity, range, animator));
44 }
45
46 // WebCore::PlatformGestureCurve implementation:
47 virtual const char* debugName() const { return "WebFlingAnimatorToGestureCurveAdapter"; }
48 virtual bool apply(double time, WebCore::PlatformGestureCurveTarget* target)
49 {
50 if (!m_animator->updatePosition())
51 return false;
52
53 WebCore::IntPoint currentPosition = m_animator->getCurrentPosition();
54 target->scrollBy(WebCore::IntPoint(currentPosition - m_lastPosition));
55 m_lastPosition = currentPosition;
56 return true;
57 }
58
59private:
60 WebFlingAnimatorToGestureCurveAdapter(const WebCore::FloatPoint& velocity, const WebCore::IntRect& range, PassOwnPtr<WebFlingAnimator> animator)
61 : m_animator(animator)
62 {
63 m_animator->startFling(velocity, range);
64 }
65
66 OwnPtr<WebFlingAnimator> m_animator;
67 WebCore::IntPoint m_lastPosition;
68};
69
70}
71
72#endif // WebFlingAnimatorToGestureCurveAdapter_h