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Side by Side Diff: ui/gfx/render_text.h

Issue 2523673004: [NOT FOR COMMIT] Fully replace SkCanvas uses.
Patch Set: Support Android build. Created 3 years, 12 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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_GFX_RENDER_TEXT_H_ 5 #ifndef UI_GFX_RENDER_TEXT_H_
6 #define UI_GFX_RENDER_TEXT_H_ 6 #define UI_GFX_RENDER_TEXT_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
11 #include <algorithm> 11 #include <algorithm>
12 #include <cstring> 12 #include <cstring>
13 #include <memory> 13 #include <memory>
14 #include <string> 14 #include <string>
15 #include <utility> 15 #include <utility>
16 #include <vector> 16 #include <vector>
17 17
18 #include "base/i18n/rtl.h" 18 #include "base/i18n/rtl.h"
19 #include "base/macros.h" 19 #include "base/macros.h"
20 #include "base/strings/string16.h" 20 #include "base/strings/string16.h"
21 #include "skia/ext/cdl_common.h"
22 #include "skia/ext/cdl_paint.h"
21 #include "third_party/skia/include/core/SkColor.h" 23 #include "third_party/skia/include/core/SkColor.h"
22 #include "third_party/skia/include/core/SkPaint.h" 24 #include "third_party/skia/include/core/SkPaint.h"
23 #include "third_party/skia/include/core/SkRefCnt.h" 25 #include "third_party/skia/include/core/SkRefCnt.h"
24 #include "ui/gfx/break_list.h" 26 #include "ui/gfx/break_list.h"
25 #include "ui/gfx/font_list.h" 27 #include "ui/gfx/font_list.h"
26 #include "ui/gfx/font_render_params.h" 28 #include "ui/gfx/font_render_params.h"
27 #include "ui/gfx/geometry/point.h" 29 #include "ui/gfx/geometry/point.h"
28 #include "ui/gfx/geometry/rect.h" 30 #include "ui/gfx/geometry/rect.h"
29 #include "ui/gfx/geometry/size_f.h" 31 #include "ui/gfx/geometry/size_f.h"
30 #include "ui/gfx/geometry/vector2d.h" 32 #include "ui/gfx/geometry/vector2d.h"
31 #include "ui/gfx/range/range.h" 33 #include "ui/gfx/range/range.h"
32 #include "ui/gfx/range/range_f.h" 34 #include "ui/gfx/range/range_f.h"
33 #include "ui/gfx/selection_model.h" 35 #include "ui/gfx/selection_model.h"
34 #include "ui/gfx/shadow_value.h" 36 #include "ui/gfx/shadow_value.h"
35 #include "ui/gfx/text_constants.h" 37 #include "ui/gfx/text_constants.h"
36 38
37 class SkCanvas;
38 class SkDrawLooper; 39 class SkDrawLooper;
39 struct SkPoint; 40 struct SkPoint;
40 class SkShader; 41 class SkShader;
41 class SkTypeface; 42 class SkTypeface;
42 43
43 namespace gfx { 44 namespace gfx {
44 namespace test { 45 namespace test {
45 class RenderTextTestApi; 46 class RenderTextTestApi;
46 } 47 }
47 48
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83 void DrawUnderline(int x, int y, int width); 84 void DrawUnderline(int x, int y, int width);
84 void DrawStrike(int x, int y, int width) const; 85 void DrawStrike(int x, int y, int width) const;
85 86
86 private: 87 private:
87 friend class test::RenderTextTestApi; 88 friend class test::RenderTextTestApi;
88 89
89 // Helper class to draw a diagonal line with multiple pieces of different 90 // Helper class to draw a diagonal line with multiple pieces of different
90 // lengths and colors; to support text selection appearances. 91 // lengths and colors; to support text selection appearances.
91 class DiagonalStrike { 92 class DiagonalStrike {
92 public: 93 public:
93 DiagonalStrike(Canvas* canvas, Point start, const SkPaint& paint); 94 DiagonalStrike(Canvas* canvas, Point start, const CdlPaint& paint);
94 ~DiagonalStrike(); 95 ~DiagonalStrike();
95 96
96 void AddPiece(int length, SkColor color); 97 void AddPiece(int length, SkColor color);
97 void Draw(); 98 void Draw();
98 99
99 private: 100 private:
100 typedef std::pair<int, SkColor> Piece; 101 typedef std::pair<int, SkColor> Piece;
101 102
102 Canvas* canvas_; 103 Canvas* canvas_;
103 const Point start_; 104 const Point start_;
104 SkPaint paint_; 105 CdlPaint paint_;
105 int total_length_; 106 int total_length_;
106 std::vector<Piece> pieces_; 107 std::vector<Piece> pieces_;
107 108
108 DISALLOW_COPY_AND_ASSIGN(DiagonalStrike); 109 DISALLOW_COPY_AND_ASSIGN(DiagonalStrike);
109 }; 110 };
110 111
111 Canvas* canvas_; 112 Canvas* canvas_;
112 SkCanvas* canvas_skia_; 113 CdlCanvas* canvas_skia_;
113 SkPaint paint_; 114 CdlPaint paint_;
114 SkScalar underline_thickness_; 115 SkScalar underline_thickness_;
115 SkScalar underline_position_; 116 SkScalar underline_position_;
116 std::unique_ptr<DiagonalStrike> diagonal_; 117 std::unique_ptr<DiagonalStrike> diagonal_;
117 118
118 DISALLOW_COPY_AND_ASSIGN(SkiaTextRenderer); 119 DISALLOW_COPY_AND_ASSIGN(SkiaTextRenderer);
119 }; 120 };
120 121
121 // Internal helper class used to iterate colors, baselines, and styles. 122 // Internal helper class used to iterate colors, baselines, and styles.
122 class StyleIterator { 123 class StyleIterator {
123 public: 124 public:
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192 193
193 // Creates an SkTypeface from a font, |italic| and a desired |weight|. 194 // Creates an SkTypeface from a font, |italic| and a desired |weight|.
194 // May return null. 195 // May return null.
195 sk_sp<SkTypeface> CreateSkiaTypeface(const Font& font, 196 sk_sp<SkTypeface> CreateSkiaTypeface(const Font& font,
196 bool italic, 197 bool italic,
197 Font::Weight weight); 198 Font::Weight weight);
198 199
199 // Applies the given FontRenderParams to a Skia |paint|. 200 // Applies the given FontRenderParams to a Skia |paint|.
200 void ApplyRenderParams(const FontRenderParams& params, 201 void ApplyRenderParams(const FontRenderParams& params,
201 bool subpixel_rendering_suppressed, 202 bool subpixel_rendering_suppressed,
202 SkPaint* paint); 203 CdlPaint* paint);
203 204
204 } // namespace internal 205 } // namespace internal
205 206
206 // RenderText represents an abstract model of styled text and its corresponding 207 // RenderText represents an abstract model of styled text and its corresponding
207 // visual layout. Support is built in for a cursor, a selection, simple styling, 208 // visual layout. Support is built in for a cursor, a selection, simple styling,
208 // complex scripts, and bi-directional text. Implementations provide mechanisms 209 // complex scripts, and bi-directional text. Implementations provide mechanisms
209 // for rendering and translation between logical and visual data. 210 // for rendering and translation between logical and visual data.
210 class GFX_EXPORT RenderText { 211 class GFX_EXPORT RenderText {
211 public: 212 public:
212 // The character used for displaying obscured text. 213 // The character used for displaying obscured text.
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861 // Lines computed by EnsureLayout. These should be invalidated upon 862 // Lines computed by EnsureLayout. These should be invalidated upon
862 // OnLayoutTextAttributeChanged and OnDisplayTextAttributeChanged calls. 863 // OnLayoutTextAttributeChanged and OnDisplayTextAttributeChanged calls.
863 std::vector<internal::Line> lines_; 864 std::vector<internal::Line> lines_;
864 865
865 DISALLOW_COPY_AND_ASSIGN(RenderText); 866 DISALLOW_COPY_AND_ASSIGN(RenderText);
866 }; 867 };
867 868
868 } // namespace gfx 869 } // namespace gfx
869 870
870 #endif // UI_GFX_RENDER_TEXT_H_ 871 #endif // UI_GFX_RENDER_TEXT_H_
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