1/*
2 * Copyright (C) 2012 Apple 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 * 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 ScrollingStateScrollingNode_h
27#define ScrollingStateScrollingNode_h
28
29#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
30
31#include "ScrollTypes.h"
32#include "ScrollingCoordinator.h"
33#include "ScrollingStateNode.h"
34#include <wtf/PassOwnPtr.h>
35
36namespace WebCore {
37
38class ScrollingStateScrollingNode : public ScrollingStateNode {
39public:
40    virtual ~ScrollingStateScrollingNode();
41
42    enum ChangedProperty {
43        ScrollableAreaSize = NumStateNodeBits,
44        TotalContentsSize,
45        ReachableContentsSize,
46        ScrollPosition,
47        ScrollOrigin,
48        ScrollableAreaParams,
49        RequestedScrollPosition,
50        NumScrollingStateNodeBits,
51    };
52
53    const FloatSize& scrollableAreaSize() const { return m_scrollableAreaSize; }
54    void setScrollableAreaSize(const FloatSize&);
55
56    const FloatSize& totalContentsSize() const { return m_totalContentsSize; }
57    void setTotalContentsSize(const FloatSize&);
58
59    const FloatSize& reachableContentsSize() const { return m_reachableContentsSize; }
60    void setReachableContentsSize(const FloatSize&);
61
62    const FloatPoint& scrollPosition() const { return m_scrollPosition; }
63    void setScrollPosition(const FloatPoint&);
64
65    const IntPoint& scrollOrigin() const { return m_scrollOrigin; }
66    void setScrollOrigin(const IntPoint&);
67
68    const ScrollableAreaParameters& scrollableAreaParameters() const { return m_scrollableAreaParameters; }
69    void setScrollableAreaParameters(const ScrollableAreaParameters& params);
70
71    const FloatPoint& requestedScrollPosition() const { return m_requestedScrollPosition; }
72    bool requestedScrollPositionRepresentsProgrammaticScroll() const { return m_requestedScrollPositionRepresentsProgrammaticScroll; }
73    void setRequestedScrollPosition(const FloatPoint&, bool representsProgrammaticScroll);
74
75    virtual void dumpProperties(TextStream&, int indent) const override;
76
77protected:
78    ScrollingStateScrollingNode(ScrollingStateTree&, ScrollingNodeType, ScrollingNodeID);
79    ScrollingStateScrollingNode(const ScrollingStateScrollingNode&, ScrollingStateTree&);
80
81private:
82    FloatSize m_scrollableAreaSize;
83    FloatSize m_totalContentsSize;
84    FloatSize m_reachableContentsSize;
85    FloatPoint m_scrollPosition;
86    FloatPoint m_requestedScrollPosition;
87    IntPoint m_scrollOrigin;
88    ScrollableAreaParameters m_scrollableAreaParameters;
89    bool m_requestedScrollPositionRepresentsProgrammaticScroll;
90};
91
92SCROLLING_STATE_NODE_TYPE_CASTS(ScrollingStateScrollingNode, isScrollingNode());
93
94} // namespace WebCore
95
96#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
97
98#endif // ScrollingStateScrollingNode_h
99