1/*
2 * Copyright (C) 2016 Igalia S.L.
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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ScrollAnimation_h
27#define ScrollAnimation_h
28
29#include "ScrollTypes.h"
30
31namespace WebCore {
32
33class FloatPoint;
34class ScrollableArea;
35
36class ScrollAnimation {
37public:
38 virtual ~ScrollAnimation() { };
39 virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float /* step */, float /* multiplier */) { return true; };
40 virtual void stop() = 0;
41 virtual void updateVisibleLengths() { };
42 virtual void setCurrentPosition(const FloatPoint&) { };
43 virtual void serviceAnimation() { };
44
45protected:
46 ScrollAnimation(ScrollableArea& scrollableArea)
47 : m_scrollableArea(scrollableArea)
48 {
49 }
50
51 ScrollableArea& m_scrollableArea;
52};
53
54} // namespace WebCore
55
56#endif // ScrollAnimation_h
57