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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 <map> | 8 #include <map> |
9 #include <queue> | 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/base/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 { |
20 | 20 |
21 class Link; | 21 class Link; |
22 class StyledLabelListener; | 22 class StyledLabelListener; |
23 | 23 |
24 // A class which can apply mixed styles to a block of text. Currently, text is | 24 // A class which can apply mixed styles to a block of text. Currently, text is |
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55 | 55 |
56 // Note that any trailing whitespace in |text| will be trimmed. | 56 // Note that any trailing whitespace in |text| will be trimmed. |
57 StyledLabel(const string16& text, StyledLabelListener* listener); | 57 StyledLabel(const string16& text, StyledLabelListener* listener); |
58 virtual ~StyledLabel(); | 58 virtual ~StyledLabel(); |
59 | 59 |
60 // Sets the text to be displayed, and clears any previous styling. | 60 // Sets the text to be displayed, and clears any previous styling. |
61 void SetText(const string16& text); | 61 void SetText(const string16& text); |
62 | 62 |
63 // Marks the given range within |text_| with style defined by |style_info|. | 63 // Marks the given range within |text_| with style defined by |style_info|. |
64 // |range| must be contained in |text_|. | 64 // |range| must be contained in |text_|. |
65 void AddStyleRange(const ui::Range& range, const RangeStyleInfo& style_info); | 65 void AddStyleRange(const gfx::Range& range, const RangeStyleInfo& style_info); |
66 | 66 |
67 // Sets the default style to use for any part of the text that isn't within | 67 // Sets the default style to use for any part of the text that isn't within |
68 // a range set by AddStyleRange. | 68 // a range set by AddStyleRange. |
69 void SetDefaultStyle(const RangeStyleInfo& style_info); | 69 void SetDefaultStyle(const RangeStyleInfo& style_info); |
70 | 70 |
71 // Sets the color of the background on which the label is drawn. This won't | 71 // Sets the color of the background on which the label is drawn. This won't |
72 // be explicitly drawn, but the label will force the text color to be | 72 // be explicitly drawn, but the label will force the text color to be |
73 // readable over it. | 73 // readable over it. |
74 void SetDisplayedOnBackgroundColor(SkColor color); | 74 void SetDisplayedOnBackgroundColor(SkColor color); |
75 SkColor displayed_on_background_color() const { | 75 SkColor displayed_on_background_color() const { |
76 return displayed_on_background_color_; | 76 return displayed_on_background_color_; |
77 } | 77 } |
78 | 78 |
79 // View implementation: | 79 // View implementation: |
80 virtual gfx::Insets GetInsets() const OVERRIDE; | 80 virtual gfx::Insets GetInsets() const OVERRIDE; |
81 virtual int GetHeightForWidth(int w) OVERRIDE; | 81 virtual int GetHeightForWidth(int w) OVERRIDE; |
82 virtual void Layout() OVERRIDE; | 82 virtual void Layout() OVERRIDE; |
83 virtual void PreferredSizeChanged() OVERRIDE; | 83 virtual void PreferredSizeChanged() OVERRIDE; |
84 | 84 |
85 // LinkListener implementation: | 85 // LinkListener implementation: |
86 virtual void LinkClicked(Link* source, int event_flags) OVERRIDE; | 86 virtual void LinkClicked(Link* source, int event_flags) OVERRIDE; |
87 | 87 |
88 private: | 88 private: |
89 struct StyleRange { | 89 struct StyleRange { |
90 StyleRange(const ui::Range& range, | 90 StyleRange(const gfx::Range& range, |
91 const RangeStyleInfo& style_info) | 91 const RangeStyleInfo& style_info) |
92 : range(range), | 92 : range(range), |
93 style_info(style_info) { | 93 style_info(style_info) { |
94 } | 94 } |
95 ~StyleRange() {} | 95 ~StyleRange() {} |
96 | 96 |
97 bool operator<(const StyleRange& other) const; | 97 bool operator<(const StyleRange& other) const; |
98 | 98 |
99 ui::Range range; | 99 gfx::Range range; |
100 RangeStyleInfo style_info; | 100 RangeStyleInfo style_info; |
101 }; | 101 }; |
102 | 102 |
103 // Calculates how to layout child views, creates them and sets their size | 103 // Calculates how to layout child views, creates them and sets their size |
104 // and position. |width| is the horizontal space, in pixels, that the view | 104 // and position. |width| is the horizontal space, in pixels, that the view |
105 // has to work with. If |dry_run| is true, the view hierarchy is not touched. | 105 // has to work with. If |dry_run| is true, the view hierarchy is not touched. |
106 // The return value is the height in pixels. | 106 // The return value is the height in pixels. |
107 int CalculateAndDoLayout(int width, bool dry_run); | 107 int CalculateAndDoLayout(int width, bool dry_run); |
108 | 108 |
109 // The text to display. | 109 // The text to display. |
110 string16 text_; | 110 string16 text_; |
111 | 111 |
112 // The default style to use for any part of the text that isn't within | 112 // The default style to use for any part of the text that isn't within |
113 // a range in |style_ranges_|. | 113 // a range in |style_ranges_|. |
114 RangeStyleInfo default_style_info_; | 114 RangeStyleInfo default_style_info_; |
115 | 115 |
116 // The listener that will be informed of link clicks. | 116 // The listener that will be informed of link clicks. |
117 StyledLabelListener* listener_; | 117 StyledLabelListener* listener_; |
118 | 118 |
119 // The ranges that should be linkified, sorted by start position. | 119 // The ranges that should be linkified, sorted by start position. |
120 std::priority_queue<StyleRange> style_ranges_; | 120 std::priority_queue<StyleRange> style_ranges_; |
121 | 121 |
122 // A mapping from a view to the range it corresponds to in |text_|. Only views | 122 // A mapping from a view to the range it corresponds to in |text_|. Only views |
123 // that correspond to ranges with is_link style set will be added to the map. | 123 // that correspond to ranges with is_link style set will be added to the map. |
124 std::map<View*, ui::Range> link_targets_; | 124 std::map<View*, gfx::Range> link_targets_; |
125 | 125 |
126 // This variable saves the result of the last GetHeightForWidth call in order | 126 // This variable saves the result of the last GetHeightForWidth call in order |
127 // to avoid repeated calculation. | 127 // to avoid repeated calculation. |
128 gfx::Size calculated_size_; | 128 gfx::Size calculated_size_; |
129 | 129 |
130 // Background color on which the label is drawn, for auto color readability. | 130 // Background color on which the label is drawn, for auto color readability. |
131 SkColor displayed_on_background_color_; | 131 SkColor displayed_on_background_color_; |
132 bool displayed_on_background_color_set_; | 132 bool displayed_on_background_color_set_; |
133 | 133 |
134 DISALLOW_COPY_AND_ASSIGN(StyledLabel); | 134 DISALLOW_COPY_AND_ASSIGN(StyledLabel); |
135 }; | 135 }; |
136 | 136 |
137 } // namespace views | 137 } // namespace views |
138 | 138 |
139 #endif // UI_VIEWS_CONTROLS_STYLED_LABEL_H_ | 139 #endif // UI_VIEWS_CONTROLS_STYLED_LABEL_H_ |
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