third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h - Issue 1550983002: Revert of Make ScrollbarThemeAura selectively invalidate scrollbar parts.

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Issue 1550983002: Revert of Make ScrollbarThemeAura selectively invalidate scrollbar parts. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 11 months ago

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1 /*	1 /*

2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.	2 * Copyright (C) 2008 Apple 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	5 * modification, are permitted provided that the following conditions

6 * are met:	6 * are met:

7 * 1. Redistributions of source code must retain the above copyright	7 * 1. Redistributions of source code must retain the above copyright

8 * notice, this list of conditions and the following disclaimer.	8 * notice, this list of conditions and the following disclaimer.

9 * 2. Redistributions in binary form must reproduce the above copyright	9 * 2. Redistributions in binary form must reproduce the above copyright

10 * notice, this list of conditions and the following disclaimer in the	10 * notice, this list of conditions and the following disclaimer in the

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63 virtual int scrollbarMargin() const { return 0; }	63 virtual int scrollbarMargin() const { return 0; }

64	64

65 virtual WebScrollbarButtonsPlacement buttonsPlacement() const { return WebSc rollbarButtonsPlacementSingle; }	65 virtual WebScrollbarButtonsPlacement buttonsPlacement() const { return WebSc rollbarButtonsPlacementSingle; }

66	66

67 virtual bool supportsControlTints() const { return false; }	67 virtual bool supportsControlTints() const { return false; }

68 virtual bool usesOverlayScrollbars() const { return false; }	68 virtual bool usesOverlayScrollbars() const { return false; }

69 virtual void updateScrollbarOverlayStyle(const ScrollbarThemeClient&) { }	69 virtual void updateScrollbarOverlayStyle(const ScrollbarThemeClient&) { }

70	70

71 virtual bool invalidateOnMouseEnterExit() { return false; }	71 virtual bool invalidateOnMouseEnterExit() { return false; }

72 virtual bool invalidateOnWindowActiveChange() const { return false; }	72 virtual bool invalidateOnWindowActiveChange() const { return false; }

73 virtual ScrollbarPart invalidateOnThumbPositionChange(const ScrollbarThemeCl ient&, float oldPosition, float newPosition) const { return AllParts; }

74	73

75 virtual void paintScrollCorner(GraphicsContext&, const DisplayItemClient&, c onst IntRect& cornerRect);	74 virtual void paintScrollCorner(GraphicsContext&, const DisplayItemClient&, c onst IntRect& cornerRect);

76 virtual void paintTickmarks(GraphicsContext&, const ScrollbarThemeClient&, c onst IntRect&) { }	75 virtual void paintTickmarks(GraphicsContext&, const ScrollbarThemeClient&, c onst IntRect&) { }

77	76

78 virtual bool shouldCenterOnThumb(const ScrollbarThemeClient&, const Platform MouseEvent&);	77 virtual bool shouldCenterOnThumb(const ScrollbarThemeClient&, const Platform MouseEvent&);

79 virtual bool shouldSnapBackToDragOrigin(const ScrollbarThemeClient&, const P latformMouseEvent&);	78 virtual bool shouldSnapBackToDragOrigin(const ScrollbarThemeClient&, const P latformMouseEvent&);

80 virtual bool shouldDragDocumentInsteadOfThumb(const ScrollbarThemeClient&, c onst PlatformMouseEvent&) { return false; }	79 virtual bool shouldDragDocumentInsteadOfThumb(const ScrollbarThemeClient&, c onst PlatformMouseEvent&) { return false; }

81	80

82 // The position of the thumb relative to the track.	81 // The position of the thumb relative to the track.

83 virtual int thumbPosition(const ScrollbarThemeClient&);	82 virtual int thumbPosition(const ScrollbarThemeClient&);

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130 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart);	129 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart);

131 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart);	130 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart);

132	131

133 private:	132 private:

134 static ScrollbarTheme& nativeTheme(); // Must be implemented to return the c orrect theme subclass.	133 static ScrollbarTheme& nativeTheme(); // Must be implemented to return the c orrect theme subclass.

135 static bool gMockScrollbarsEnabled;	134 static bool gMockScrollbarsEnabled;

136 };	135 };

137	136

138 }	137 }

139 #endif	138 #endif

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