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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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