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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_VIEWS_CONTROLS_STYLED_LABEL_H_ | 5 #ifndef UI_VIEWS_CONTROLS_STYLED_LABEL_H_ |
6 #define UI_VIEWS_CONTROLS_STYLED_LABEL_H_ | 6 #define UI_VIEWS_CONTROLS_STYLED_LABEL_H_ |
7 | 7 |
| 8 #include <list> |
8 #include <map> | 9 #include <map> |
9 #include <queue> | |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/strings/string16.h" | 12 #include "base/strings/string16.h" |
13 #include "third_party/skia/include/core/SkColor.h" | 13 #include "third_party/skia/include/core/SkColor.h" |
14 #include "ui/gfx/range/range.h" | 14 #include "ui/gfx/range/range.h" |
15 #include "ui/gfx/size.h" | 15 #include "ui/gfx/size.h" |
16 #include "ui/views/controls/link_listener.h" | 16 #include "ui/views/controls/link_listener.h" |
17 #include "ui/views/view.h" | 17 #include "ui/views/view.h" |
18 | 18 |
19 namespace views { | 19 namespace views { |
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78 | 78 |
79 void set_auto_color_readability_enabled(bool auto_color_readability) { | 79 void set_auto_color_readability_enabled(bool auto_color_readability) { |
80 auto_color_readability_enabled_ = auto_color_readability; | 80 auto_color_readability_enabled_ = auto_color_readability; |
81 } | 81 } |
82 | 82 |
83 // View implementation: | 83 // View implementation: |
84 virtual gfx::Insets GetInsets() const OVERRIDE; | 84 virtual gfx::Insets GetInsets() const OVERRIDE; |
85 virtual int GetHeightForWidth(int w) OVERRIDE; | 85 virtual int GetHeightForWidth(int w) OVERRIDE; |
86 virtual void Layout() OVERRIDE; | 86 virtual void Layout() OVERRIDE; |
87 virtual void PreferredSizeChanged() OVERRIDE; | 87 virtual void PreferredSizeChanged() OVERRIDE; |
| 88 virtual void ViewHierarchyChanged( |
| 89 const ViewHierarchyChangedDetails& details) OVERRIDE; |
| 90 virtual void VisibilityChanged(View* starting_from, bool is_visible) OVERRIDE; |
88 | 91 |
89 // LinkListener implementation: | 92 // LinkListener implementation: |
90 virtual void LinkClicked(Link* source, int event_flags) OVERRIDE; | 93 virtual void LinkClicked(Link* source, int event_flags) OVERRIDE; |
91 | 94 |
92 private: | 95 private: |
93 struct StyleRange { | 96 struct StyleRange { |
94 StyleRange(const gfx::Range& range, | 97 StyleRange(const gfx::Range& range, |
95 const RangeStyleInfo& style_info) | 98 const RangeStyleInfo& style_info) |
96 : range(range), | 99 : range(range), |
97 style_info(style_info) { | 100 style_info(style_info) { |
98 } | 101 } |
99 ~StyleRange() {} | 102 ~StyleRange() {} |
100 | 103 |
101 bool operator<(const StyleRange& other) const; | 104 bool operator<(const StyleRange& other) const; |
102 | 105 |
103 gfx::Range range; | 106 gfx::Range range; |
104 RangeStyleInfo style_info; | 107 RangeStyleInfo style_info; |
105 }; | 108 }; |
| 109 typedef std::list<StyleRange> StyleRanges; |
106 | 110 |
107 // Calculates how to layout child views, creates them and sets their size | 111 // Calculates how to layout child views, creates them and sets their size |
108 // and position. |width| is the horizontal space, in pixels, that the view | 112 // and position. |width| is the horizontal space, in pixels, that the view |
109 // has to work with. If |dry_run| is true, the view hierarchy is not touched. | 113 // has to work with. If |dry_run| is true, the view hierarchy is not touched. |
110 // The return value is the height in pixels. | 114 // The return value is the necessary size. |
111 int CalculateAndDoLayout(int width, bool dry_run); | 115 gfx::Size CalculateAndDoLayout(int width, bool dry_run); |
112 | 116 |
113 // The text to display. | 117 // The text to display. |
114 string16 text_; | 118 string16 text_; |
115 | 119 |
116 // The default style to use for any part of the text that isn't within | 120 // The default style to use for any part of the text that isn't within |
117 // a range in |style_ranges_|. | 121 // a range in |style_ranges_|. |
118 RangeStyleInfo default_style_info_; | 122 RangeStyleInfo default_style_info_; |
119 | 123 |
120 // The listener that will be informed of link clicks. | 124 // The listener that will be informed of link clicks. |
121 StyledLabelListener* listener_; | 125 StyledLabelListener* listener_; |
122 | 126 |
123 // The ranges that should be linkified, sorted by start position. | 127 // The ranges that should be linkified, sorted by start position. |
124 std::priority_queue<StyleRange> style_ranges_; | 128 StyleRanges style_ranges_; |
125 | 129 |
126 // A mapping from a view to the range it corresponds to in |text_|. Only views | 130 // A mapping from a view to the range it corresponds to in |text_|. Only views |
127 // that correspond to ranges with is_link style set will be added to the map. | 131 // that correspond to ranges with is_link style set will be added to the map. |
128 std::map<View*, gfx::Range> link_targets_; | 132 std::map<View*, gfx::Range> link_targets_; |
129 | 133 |
130 // This variable saves the result of the last GetHeightForWidth call in order | 134 // This variable saves the result of the last GetHeightForWidth call in order |
131 // to avoid repeated calculation. | 135 // to avoid repeated calculation. |
132 gfx::Size calculated_size_; | 136 gfx::Size calculated_size_; |
133 | 137 |
| 138 // Saves the most recent value of IsDrawn() as of the last call to |
| 139 // GetInsets(), since if this changes, we may need to recalulate our size. |
| 140 mutable bool is_drawn_; |
| 141 |
134 // Background color on which the label is drawn, for auto color readability. | 142 // Background color on which the label is drawn, for auto color readability. |
135 SkColor displayed_on_background_color_; | 143 SkColor displayed_on_background_color_; |
136 bool displayed_on_background_color_set_; | 144 bool displayed_on_background_color_set_; |
137 | 145 |
138 // Controls whether the text is automatically re-colored to be readable on the | 146 // Controls whether the text is automatically re-colored to be readable on the |
139 // background. | 147 // background. |
140 bool auto_color_readability_enabled_; | 148 bool auto_color_readability_enabled_; |
141 | 149 |
142 DISALLOW_COPY_AND_ASSIGN(StyledLabel); | 150 DISALLOW_COPY_AND_ASSIGN(StyledLabel); |
143 }; | 151 }; |
144 | 152 |
145 } // namespace views | 153 } // namespace views |
146 | 154 |
147 #endif // UI_VIEWS_CONTROLS_STYLED_LABEL_H_ | 155 #endif // UI_VIEWS_CONTROLS_STYLED_LABEL_H_ |
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