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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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31 #include "platform/graphics/paint/DisplayItem.h" | 31 #include "platform/graphics/paint/DisplayItem.h" |
32 #include "platform/scroll/ScrollTypes.h" | 32 #include "platform/scroll/ScrollTypes.h" |
33 #include "public/platform/mac/MacScrollTypes.h" | 33 #include "public/platform/mac/MacScrollTypes.h" |
34 | 34 |
35 namespace blink { | 35 namespace blink { |
36 | 36 |
37 class CullRect; | 37 class CullRect; |
38 class GraphicsContext; | 38 class GraphicsContext; |
39 class PlatformMouseEvent; | 39 class PlatformMouseEvent; |
40 class ScrollbarThemeClient; | 40 class ScrollbarThemeClient; |
| 41 class ScrollbarThemePaintParams; |
41 | 42 |
42 class PLATFORM_EXPORT ScrollbarTheme { | 43 class PLATFORM_EXPORT ScrollbarTheme { |
43 WTF_MAKE_NONCOPYABLE(ScrollbarTheme); USING_FAST_MALLOC(ScrollbarTheme); | 44 WTF_MAKE_NONCOPYABLE(ScrollbarTheme); USING_FAST_MALLOC(ScrollbarTheme); |
44 public: | 45 public: |
45 ScrollbarTheme() { } | 46 ScrollbarTheme() { } |
46 virtual ~ScrollbarTheme() { } | 47 virtual ~ScrollbarTheme() { } |
47 | 48 |
| 49 // If true, then scrollbars with this theme will be painted every time |
| 50 // Scrollbar::setNeedsPaintInvalidation is called. If false, then scrollbar |
| 51 // thumb and track part painting results will be cached and not repainted |
| 52 // unless requested by Scrollbar::setThumbNeedsRepaint or |
| 53 // Scrollbar::setTrackNeedsRepaint. |
| 54 virtual bool shouldRepaintAllPartsOnInvalidation() const { return true; } |
| 55 |
48 virtual void updateEnabledState(const ScrollbarThemeClient*) { } | 56 virtual void updateEnabledState(const ScrollbarThemeClient*) { } |
49 | 57 |
50 virtual bool paint(const ScrollbarThemeClient*, GraphicsContext*, const Cull
Rect&); | 58 virtual bool paint(const ScrollbarThemeClient*, GraphicsContext*, const Cull
Rect&); |
51 | 59 |
52 virtual ScrollbarPart hitTest(const ScrollbarThemeClient*, const IntPoint&); | 60 virtual ScrollbarPart hitTest(const ScrollbarThemeClient*, const IntPoint&); |
53 | 61 |
54 virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) { re
turn 0; } | 62 virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) { re
turn 0; } |
55 virtual int scrollbarMargin() const { return 0; } | 63 virtual int scrollbarMargin() const { return 0; } |
56 | 64 |
57 virtual ScrollbarButtonsPlacement buttonsPlacement() const { return Scrollba
rButtonsPlacementSingle; } | 65 virtual ScrollbarButtonsPlacement buttonsPlacement() const { return Scrollba
rButtonsPlacementSingle; } |
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70 virtual bool shouldDragDocumentInsteadOfThumb(const ScrollbarThemeClient*, c
onst PlatformMouseEvent&) { return false; } | 78 virtual bool shouldDragDocumentInsteadOfThumb(const ScrollbarThemeClient*, c
onst PlatformMouseEvent&) { return false; } |
71 | 79 |
72 // The position of the thumb relative to the track. | 80 // The position of the thumb relative to the track. |
73 virtual int thumbPosition(const ScrollbarThemeClient*); | 81 virtual int thumbPosition(const ScrollbarThemeClient*); |
74 // The length of the thumb along the axis of the scrollbar. | 82 // The length of the thumb along the axis of the scrollbar. |
75 virtual int thumbLength(const ScrollbarThemeClient*); | 83 virtual int thumbLength(const ScrollbarThemeClient*); |
76 // The position of the track relative to the scrollbar. | 84 // The position of the track relative to the scrollbar. |
77 virtual int trackPosition(const ScrollbarThemeClient*); | 85 virtual int trackPosition(const ScrollbarThemeClient*); |
78 // The length of the track along the axis of the scrollbar. | 86 // The length of the track along the axis of the scrollbar. |
79 virtual int trackLength(const ScrollbarThemeClient*); | 87 virtual int trackLength(const ScrollbarThemeClient*); |
| 88 // The opacity to be applied to the thumb. |
| 89 virtual float thumbOpacity(const ScrollbarThemeClient*) const { return 1.0f;
} |
80 | 90 |
81 virtual bool hasButtons(const ScrollbarThemeClient*) = 0; | 91 virtual bool hasButtons(const ScrollbarThemeClient*) = 0; |
82 virtual bool hasThumb(const ScrollbarThemeClient*) = 0; | 92 virtual bool hasThumb(const ScrollbarThemeClient*) = 0; |
83 | 93 |
84 virtual IntRect backButtonRect(const ScrollbarThemeClient*, ScrollbarPart, b
ool painting = false) = 0; | 94 virtual IntRect backButtonRect(const ScrollbarThemeClient*, ScrollbarPart, b
ool painting = false) = 0; |
85 virtual IntRect forwardButtonRect(const ScrollbarThemeClient*, ScrollbarPart
, bool painting = false) = 0; | 95 virtual IntRect forwardButtonRect(const ScrollbarThemeClient*, ScrollbarPart
, bool painting = false) = 0; |
86 virtual IntRect trackRect(const ScrollbarThemeClient*, bool painting = false
) = 0; | 96 virtual IntRect trackRect(const ScrollbarThemeClient*, bool painting = false
) = 0; |
87 virtual IntRect thumbRect(const ScrollbarThemeClient*); | 97 virtual IntRect thumbRect(const ScrollbarThemeClient*); |
88 virtual int thumbThickness(const ScrollbarThemeClient*); | 98 virtual int thumbThickness(const ScrollbarThemeClient*); |
89 | 99 |
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118 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart); | 128 static DisplayItem::Type buttonPartToDisplayItemType(ScrollbarPart); |
119 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart); | 129 static DisplayItem::Type trackPiecePartToDisplayItemType(ScrollbarPart); |
120 | 130 |
121 private: | 131 private: |
122 static ScrollbarTheme* nativeTheme(); // Must be implemented to return the c
orrect theme subclass. | 132 static ScrollbarTheme* nativeTheme(); // Must be implemented to return the c
orrect theme subclass. |
123 static bool gMockScrollbarsEnabled; | 133 static bool gMockScrollbarsEnabled; |
124 }; | 134 }; |
125 | 135 |
126 } | 136 } |
127 #endif | 137 #endif |
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