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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 |
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef ScrollAnimatorBase_h | 31 #ifndef ScrollAnimatorBase_h |
32 #define ScrollAnimatorBase_h | 32 #define ScrollAnimatorBase_h |
33 | 33 |
34 #include "platform/PlatformExport.h" | 34 #include "platform/PlatformExport.h" |
35 #include "platform/PlatformWheelEvent.h" | 35 #include "platform/PlatformWheelEvent.h" |
36 #include "platform/geometry/FloatPoint.h" | |
37 #include "platform/geometry/FloatSize.h" | |
38 #include "platform/heap/Handle.h" | 36 #include "platform/heap/Handle.h" |
39 #include "platform/scroll/ScrollAnimatorCompositorCoordinator.h" | 37 #include "platform/scroll/ScrollAnimatorCompositorCoordinator.h" |
40 #include "platform/scroll/ScrollTypes.h" | 38 #include "platform/scroll/ScrollTypes.h" |
41 #include "wtf/Forward.h" | 39 #include "wtf/Forward.h" |
42 | 40 |
43 namespace blink { | 41 namespace blink { |
44 | 42 |
45 class CompositorAnimationTimeline; | 43 class CompositorAnimationTimeline; |
46 class ScrollableArea; | 44 class ScrollableArea; |
47 class Scrollbar; | 45 class Scrollbar; |
48 | 46 |
49 class PLATFORM_EXPORT ScrollAnimatorBase | 47 class PLATFORM_EXPORT ScrollAnimatorBase |
50 : public ScrollAnimatorCompositorCoordinator { | 48 : public ScrollAnimatorCompositorCoordinator { |
51 public: | 49 public: |
52 static ScrollAnimatorBase* create(ScrollableArea*); | 50 static ScrollAnimatorBase* create(ScrollableArea*); |
53 | 51 |
54 virtual ~ScrollAnimatorBase(); | 52 virtual ~ScrollAnimatorBase(); |
55 | 53 |
56 virtual void dispose() {} | 54 virtual void dispose() {} |
57 | 55 |
58 // A possibly animated scroll. The base class implementation always scrolls | 56 // A possibly animated scroll. The base class implementation always scrolls |
59 // immediately, never animates. If the scroll is animated and currently the | 57 // immediately, never animates. If the scroll is animated and currently the |
60 // animator has an in-progress animation, the ScrollResult will always return | 58 // animator has an in-progress animation, the ScrollResult will always return |
61 // no unusedDelta and didScroll=true, i.e. fully consuming the scroll request. | 59 // no unusedDelta and didScroll=true, i.e. fully consuming the scroll request. |
62 // This makes animations latch to a single scroller. Note, the semantics are | 60 // This makes animations latch to a single scroller. Note, the semantics are |
63 // currently somewhat different on Mac - see ScrollAnimatorMac.mm. | 61 // currently somewhat different on Mac - see ScrollAnimatorMac.mm. |
64 virtual ScrollResult userScroll(ScrollGranularity, const FloatSize& delta); | 62 virtual ScrollResult userScroll(ScrollGranularity, const ScrollOffset& delta); |
65 | 63 |
66 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&); | 64 virtual void scrollToOffsetWithoutAnimation(const ScrollOffset&); |
67 | 65 |
68 #if OS(MACOSX) | 66 #if OS(MACOSX) |
69 virtual void handleWheelEventPhase(PlatformWheelEventPhase) {} | 67 virtual void handleWheelEventPhase(PlatformWheelEventPhase) {} |
70 #endif | 68 #endif |
71 | 69 |
72 void setCurrentPosition(const FloatPoint&); | 70 void setCurrentOffset(const ScrollOffset&); |
73 FloatPoint currentPosition() const; | 71 ScrollOffset currentOffset() const; |
74 virtual FloatPoint desiredTargetPosition() const { return currentPosition(); } | 72 virtual ScrollOffset desiredTargetOffset() const { return currentOffset(); } |
75 | 73 |
76 // Returns how much of pixelDelta will be used by the underlying scrollable | 74 // Returns how much of pixelDelta will be used by the underlying scrollable |
77 // area. | 75 // area. |
78 virtual FloatSize computeDeltaToConsume(const FloatSize& delta) const; | 76 virtual ScrollOffset computeDeltaToConsume(const ScrollOffset& delta) const; |
79 | 77 |
80 // ScrollAnimatorCompositorCoordinator implementation. | 78 // ScrollAnimatorCompositorCoordinator implementation. |
81 ScrollableArea* getScrollableArea() const override { | 79 ScrollableArea* getScrollableArea() const override { |
82 return m_scrollableArea; | 80 return m_scrollableArea; |
83 } | 81 } |
84 void tickAnimation(double monotonicTime) override{}; | 82 void tickAnimation(double monotonicTime) override{}; |
85 void cancelAnimation() override {} | 83 void cancelAnimation() override {} |
86 void takeOverCompositorAnimation() override {} | 84 void takeOverCompositorAnimation() override {} |
87 void updateCompositorAnimations() override{}; | 85 void updateCompositorAnimations() override{}; |
88 void notifyCompositorAnimationFinished(int groupId) override{}; | 86 void notifyCompositorAnimationFinished(int groupId) override{}; |
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105 | 103 |
106 virtual void didAddVerticalScrollbar(Scrollbar&) {} | 104 virtual void didAddVerticalScrollbar(Scrollbar&) {} |
107 virtual void willRemoveVerticalScrollbar(Scrollbar&) {} | 105 virtual void willRemoveVerticalScrollbar(Scrollbar&) {} |
108 virtual void didAddHorizontalScrollbar(Scrollbar&) {} | 106 virtual void didAddHorizontalScrollbar(Scrollbar&) {} |
109 virtual void willRemoveHorizontalScrollbar(Scrollbar&) {} | 107 virtual void willRemoveHorizontalScrollbar(Scrollbar&) {} |
110 | 108 |
111 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar&) { | 109 virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar&) { |
112 return true; | 110 return true; |
113 } | 111 } |
114 | 112 |
115 virtual void notifyContentAreaScrolled(const FloatSize&) {} | 113 virtual void notifyContentAreaScrolled(const ScrollOffset&) {} |
116 | 114 |
117 virtual bool setScrollbarsVisibleForTesting(bool) { return false; } | 115 virtual bool setScrollbarsVisibleForTesting(bool) { return false; } |
118 | 116 |
119 DECLARE_VIRTUAL_TRACE(); | 117 DECLARE_VIRTUAL_TRACE(); |
120 | 118 |
121 protected: | 119 protected: |
122 explicit ScrollAnimatorBase(ScrollableArea*); | 120 explicit ScrollAnimatorBase(ScrollableArea*); |
123 | 121 |
124 virtual void notifyPositionChanged(); | 122 virtual void notifyOffsetChanged(); |
125 | 123 |
126 Member<ScrollableArea> m_scrollableArea; | 124 Member<ScrollableArea> m_scrollableArea; |
127 | 125 |
128 FloatPoint m_currentPos; | 126 ScrollOffset m_currentOffset; |
129 }; | 127 }; |
130 | 128 |
131 } // namespace blink | 129 } // namespace blink |
132 | 130 |
133 #endif // ScrollAnimatorBase_h | 131 #endif // ScrollAnimatorBase_h |
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