third_party/WebKit/Source/platform/scroll/ScrollAnimatorBase.h - Issue 1496693005: Update RootFrameViewport::userScroll to distribute scrolls between viewports.

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Issue 1496693005: Update RootFrameViewport::userScroll to distribute scrolls between viewports. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: 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

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65	65

66 virtual void setIsActive() { }	66 virtual void setIsActive() { }

67	67

68 #if OS(MACOSX)	68 #if OS(MACOSX)

69 virtual void handleWheelEventPhase(PlatformWheelEventPhase) { }	69 virtual void handleWheelEventPhase(PlatformWheelEventPhase) { }

70 #endif	70 #endif

71	71

72 void setCurrentPosition(const FloatPoint&);	72 void setCurrentPosition(const FloatPoint&);

73 FloatPoint currentPosition() const;	73 FloatPoint currentPosition() const;

74	74

	75 // Returns how much of pixelDelta will be used by the underlying scrollable

	76 // area.

	77 virtual float computeDeltaToConsume(ScrollbarOrientation, float pixelDelta) const;

	78

75 virtual void cancelAnimations() { }	79 virtual void cancelAnimations() { }

76 virtual void serviceScrollAnimations() { }	80 virtual void serviceScrollAnimations() { }

77 virtual bool hasRunningAnimation() const { return false; }	81 virtual bool hasRunningAnimation() const { return false; }

78	82

79 virtual void contentAreaWillPaint() const { }	83 virtual void contentAreaWillPaint() const { }

80 virtual void mouseEnteredContentArea() const { }	84 virtual void mouseEnteredContentArea() const { }

81 virtual void mouseExitedContentArea() const { }	85 virtual void mouseExitedContentArea() const { }

82 virtual void mouseMovedInContentArea() const { }	86 virtual void mouseMovedInContentArea() const { }

83 virtual void mouseEnteredScrollbar(Scrollbar&) const { }	87 virtual void mouseEnteredScrollbar(Scrollbar&) const { }

84 virtual void mouseExitedScrollbar(Scrollbar&) const { }	88 virtual void mouseExitedScrollbar(Scrollbar&) const { }

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102	106

103 virtual bool setScrollbarsVisibleForTesting(bool) { return false; }	107 virtual bool setScrollbarsVisibleForTesting(bool) { return false; }

104	108

105 DECLARE_VIRTUAL_TRACE();	109 DECLARE_VIRTUAL_TRACE();

106	110

107 protected:	111 protected:

108 explicit ScrollAnimatorBase(ScrollableArea*);	112 explicit ScrollAnimatorBase(ScrollableArea*);

109	113

110 virtual void notifyPositionChanged();	114 virtual void notifyPositionChanged();

111	115

	116 float clampScrollPosition(ScrollbarOrientation, float) const;

	117

112 RawPtrWillBeMember<ScrollableArea> m_scrollableArea;	118 RawPtrWillBeMember<ScrollableArea> m_scrollableArea;

113 float m_currentPosX; // We avoid using a FloatPoint in order to reduce	119 float m_currentPosX; // We avoid using a FloatPoint in order to reduce

114 float m_currentPosY; // subclass code complexity.	120 float m_currentPosY; // subclass code complexity.

115

116 private:

117 float clampScrollPosition(ScrollbarOrientation, float);

118 };	121 };

119	122

120 } // namespace blink	123 } // namespace blink

121	124

122 #endif // ScrollAnimatorBase_h	125 #endif // ScrollAnimatorBase_h

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