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Side by Side Diff: Source/platform/Theme.h

Issue 641733004: Merge FrameView and ScrollView. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Rebaseline. Created 6 years, 2 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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31 #include "platform/PlatformExport.h" 31 #include "platform/PlatformExport.h"
32 #include "platform/ThemeTypes.h" 32 #include "platform/ThemeTypes.h"
33 #include "platform/fonts/FontDescription.h" 33 #include "platform/fonts/FontDescription.h"
34 #include "platform/geometry/IntRect.h" 34 #include "platform/geometry/IntRect.h"
35 #include "platform/graphics/Color.h" 35 #include "platform/graphics/Color.h"
36 #include "wtf/Forward.h" 36 #include "wtf/Forward.h"
37 37
38 namespace blink { 38 namespace blink {
39 39
40 class GraphicsContext; 40 class GraphicsContext;
41 class ScrollView; 41 class ScrollableArea;
42 42
43 // Unlike other platform classes, Theme does extensively use virtual functions. This design allows a platform to switch between multiple themes at runtime. 43 // Unlike other platform classes, Theme does extensively use virtual functions. This design allows a platform to switch between multiple themes at runtime.
44 class PLATFORM_EXPORT Theme { 44 class PLATFORM_EXPORT Theme {
45 public: 45 public:
46 Theme() { } 46 Theme() { }
47 virtual ~Theme() { } 47 virtual ~Theme() { }
48 48
49 // A method to obtain the baseline position adjustment for a "leaf" control. This will only be used if a baseline 49 // A method to obtain the baseline position adjustment for a "leaf" control. This will only be used if a baseline
50 // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of 50 // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of
51 // controls that need to do this. The adjustment is an offset that adds to the baseline, e.g., marginTop() + height() + |offset|. 51 // controls that need to do this. The adjustment is an offset that adds to the baseline, e.g., marginTop() + height() + |offset|.
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87 virtual LengthSize minimumControlSize(ControlPart, const FontDescription&, f loat /*zoomFactor*/) const { return LengthSize(Length(0, Fixed), Length(0, Fixed )); } 87 virtual LengthSize minimumControlSize(ControlPart, const FontDescription&, f loat /*zoomFactor*/) const { return LengthSize(Length(0, Fixed), Length(0, Fixed )); }
88 88
89 // Allows the theme to modify the existing padding/border. 89 // Allows the theme to modify the existing padding/border.
90 virtual LengthBox controlPadding(ControlPart, const FontDescription&, const LengthBox& zoomedBox, float zoomFactor) const; 90 virtual LengthBox controlPadding(ControlPart, const FontDescription&, const LengthBox& zoomedBox, float zoomFactor) const;
91 virtual LengthBox controlBorder(ControlPart, const FontDescription&, const L engthBox& zoomedBox, float zoomFactor) const; 91 virtual LengthBox controlBorder(ControlPart, const FontDescription&, const L engthBox& zoomedBox, float zoomFactor) const;
92 92
93 // Whether or not whitespace: pre should be forced on always. 93 // Whether or not whitespace: pre should be forced on always.
94 virtual bool controlRequiresPreWhiteSpace(ControlPart) const { return false; } 94 virtual bool controlRequiresPreWhiteSpace(ControlPart) const { return false; }
95 95
96 // Method for painting a control. The rect is in zoomed coordinates. 96 // Method for painting a control. The rect is in zoomed coordinates.
97 virtual void paint(ControlPart, ControlStates, GraphicsContext*, const IntRe ct& /*zoomedRect*/, float /*zoomFactor*/, ScrollView*) const { } 97 virtual void paint(ControlPart, ControlStates, GraphicsContext*, const IntRe ct& /*zoomedRect*/, float /*zoomFactor*/, ScrollableArea*) const { }
98 98
99 // Some controls may spill out of their containers (e.g., the check on an OS X checkbox). When these controls repaint, 99 // Some controls may spill out of their containers (e.g., the check on an OS X checkbox). When these controls repaint,
100 // the theme needs to communicate this inflated rect to the engine so that i t can invalidate the whole control. 100 // the theme needs to communicate this inflated rect to the engine so that i t can invalidate the whole control.
101 // The rect passed in is in zoomed coordinates, so the inflation should take that into account and make sure the inflation 101 // The rect passed in is in zoomed coordinates, so the inflation should take that into account and make sure the inflation
102 // amount is also scaled by the zoomFactor. 102 // amount is also scaled by the zoomFactor.
103 virtual void inflateControlPaintRect(ControlPart, ControlStates, IntRect& /* zoomedRect*/, float /*zoomFactor*/) const { } 103 virtual void inflateControlPaintRect(ControlPart, ControlStates, IntRect& /* zoomedRect*/, float /*zoomFactor*/) const { }
104 104
105 private: 105 private:
106 mutable Color m_activeSelectionColor; 106 mutable Color m_activeSelectionColor;
107 mutable Color m_inactiveSelectionColor; 107 mutable Color m_inactiveSelectionColor;
108 }; 108 };
109 109
110 PLATFORM_EXPORT Theme* platformTheme(); 110 PLATFORM_EXPORT Theme* platformTheme();
111 111
112 } // namespace blink 112 } // namespace blink
113 113
114 #endif // Theme_h 114 #endif // Theme_h
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