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Side by Side Diff: third_party/WebKit/Source/platform/scroll/ScrollAnimatorBase.h

Issue 1477113003: [Oilpan] Move ScrollAnimators onto oilpan heap (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rename Created 5 years ago
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1 /* 1 /*
2 * Copyright (c) 2010, Google Inc. All rights reserved. 2 * Copyright (c) 2010, Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are 5 * modification, are permitted provided that the following conditions are
6 * met: 6 * met:
7 * 7 *
8 * * Redistributions of source code must retain the above copyright 8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above 10 * * Redistributions in binary form must reproduce the above
(...skipping 26 matching lines...) Expand all
37 #include "platform/heap/Handle.h" 37 #include "platform/heap/Handle.h"
38 #include "platform/scroll/ScrollTypes.h" 38 #include "platform/scroll/ScrollTypes.h"
39 #include "wtf/Forward.h" 39 #include "wtf/Forward.h"
40 40
41 namespace blink { 41 namespace blink {
42 42
43 class FloatPoint; 43 class FloatPoint;
44 class ScrollableArea; 44 class ScrollableArea;
45 class Scrollbar; 45 class Scrollbar;
46 46
47 class PLATFORM_EXPORT ScrollAnimatorBase { 47 class PLATFORM_EXPORT ScrollAnimatorBase : public NoBaseWillBeGarbageCollectedFi nalized<ScrollAnimatorBase> {
48 public: 48 public:
49 static PassOwnPtr<ScrollAnimatorBase> create(ScrollableArea*); 49 static PassOwnPtrWillBeRawPtr<ScrollAnimatorBase> create(ScrollableArea*);
50 50
51 virtual ~ScrollAnimatorBase(); 51 virtual ~ScrollAnimatorBase();
52 52
53 virtual void dispose() { }
54
53 // Computes a scroll destination for the given parameters. The returned 55 // Computes a scroll destination for the given parameters. The returned
54 // ScrollResultOneDimensional will have didScroll set to false if already at 56 // ScrollResultOneDimensional will have didScroll set to false if already at
55 // the destination. Otherwise, starts scrolling towards the destination and 57 // the destination. Otherwise, starts scrolling towards the destination and
56 // didScroll is true. Scrolling may be immediate or animated. The base 58 // didScroll is true. Scrolling may be immediate or animated. The base
57 // class implementation always scrolls immediately, never animates. 59 // class implementation always scrolls immediately, never animates.
58 virtual ScrollResultOneDimensional userScroll(ScrollbarOrientation, ScrollGr anularity, float step, float delta); 60 virtual ScrollResultOneDimensional userScroll(ScrollbarOrientation, ScrollGr anularity, float step, float delta);
59 61
60 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&); 62 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
61 63
62 ScrollableArea* scrollableArea() const { return m_scrollableArea; } 64 ScrollableArea* scrollableArea() const { return m_scrollableArea; }
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92 virtual void didAddVerticalScrollbar(Scrollbar*) { } 94 virtual void didAddVerticalScrollbar(Scrollbar*) { }
93 virtual void willRemoveVerticalScrollbar(Scrollbar*) { } 95 virtual void willRemoveVerticalScrollbar(Scrollbar*) { }
94 virtual void didAddHorizontalScrollbar(Scrollbar*) { } 96 virtual void didAddHorizontalScrollbar(Scrollbar*) { }
95 virtual void willRemoveHorizontalScrollbar(Scrollbar*) { } 97 virtual void willRemoveHorizontalScrollbar(Scrollbar*) { }
96 98
97 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) { return tru e; } 99 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) { return tru e; }
98 100
99 virtual void notifyContentAreaScrolled(const FloatSize&) { } 101 virtual void notifyContentAreaScrolled(const FloatSize&) { }
100 102
101 virtual bool setScrollbarsVisibleForTesting(bool) { return false; } 103 virtual bool setScrollbarsVisibleForTesting(bool) { return false; }
104
105 DECLARE_VIRTUAL_TRACE();
106
102 protected: 107 protected:
103 explicit ScrollAnimatorBase(ScrollableArea*); 108 explicit ScrollAnimatorBase(ScrollableArea*);
104 109
105 virtual void notifyPositionChanged(); 110 virtual void notifyPositionChanged();
106 111
107 GC_PLUGIN_IGNORE("509911") 112 RawPtrWillBeMember<ScrollableArea> m_scrollableArea;
108 ScrollableArea* m_scrollableArea;
109 float m_currentPosX; // We avoid using a FloatPoint in order to reduce 113 float m_currentPosX; // We avoid using a FloatPoint in order to reduce
110 float m_currentPosY; // subclass code complexity. 114 float m_currentPosY; // subclass code complexity.
111 115
112 private: 116 private:
113 float clampScrollPosition(ScrollbarOrientation, float); 117 float clampScrollPosition(ScrollbarOrientation, float);
114 }; 118 };
115 119
116 } // namespace blink 120 } // namespace blink
117 121
118 #endif // ScrollAnimatorBase_h 122 #endif // ScrollAnimatorBase_h
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