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

Issue 1819753003: Allow various font weights in gfx. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Add a lost comment and modify a render text unittest to not test black because of test env font con… Created 4 years, 6 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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_HARFBUZZ_H_ 5 #ifndef UI_GFX_RENDER_TEXT_HARFBUZZ_H_
6 #define UI_GFX_RENDER_TEXT_HARFBUZZ_H_ 6 #define UI_GFX_RENDER_TEXT_HARFBUZZ_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
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27 namespace gfx { 27 namespace gfx {
28 28
29 class Range; 29 class Range;
30 class RangeF; 30 class RangeF;
31 31
32 namespace internal { 32 namespace internal {
33 33
34 struct GFX_EXPORT TextRunHarfBuzz { 34 struct GFX_EXPORT TextRunHarfBuzz {
35 // Construct the run with |template_font| since determining the details of a 35 // Construct the run with |template_font| since determining the details of a
36 // default-constructed gfx::Font is expensive, but it will always be replaced. 36 // default-constructed gfx::Font is expensive, but it will always be replaced.
37 explicit TextRunHarfBuzz(const gfx::Font& template_font); 37 explicit TextRunHarfBuzz(const Font& template_font);
38 ~TextRunHarfBuzz(); 38 ~TextRunHarfBuzz();
39 39
40 // Returns the index of the first glyph that corresponds to the character at 40 // Returns the index of the first glyph that corresponds to the character at
41 // |pos|. 41 // |pos|.
42 size_t CharToGlyph(size_t pos) const; 42 size_t CharToGlyph(size_t pos) const;
43 43
44 // Returns the corresponding glyph range of the given character range. 44 // Returns the corresponding glyph range of the given character range.
45 // |range| is in text-space (0 corresponds to |GetDisplayText()[0]|). Returned 45 // |range| is in text-space (0 corresponds to |GetDisplayText()[0]|). Returned
46 // value is in run-space (0 corresponds to the first glyph in the run). 46 // value is in run-space (0 corresponds to the first glyph in the run).
47 Range CharRangeToGlyphRange(const Range& range) const; 47 Range CharRangeToGlyphRange(const Range& range) const;
(...skipping 26 matching lines...) Expand all
74 std::unique_ptr<SkPoint[]> positions; 74 std::unique_ptr<SkPoint[]> positions;
75 std::vector<uint32_t> glyph_to_char; 75 std::vector<uint32_t> glyph_to_char;
76 size_t glyph_count; 76 size_t glyph_count;
77 77
78 Font font; 78 Font font;
79 sk_sp<SkTypeface> skia_face; 79 sk_sp<SkTypeface> skia_face;
80 FontRenderParams render_params; 80 FontRenderParams render_params;
81 int font_size; 81 int font_size;
82 int baseline_offset; 82 int baseline_offset;
83 int baseline_type; 83 int baseline_type;
84 int font_style; 84 bool italic;
85 Font::Weight weight;
85 bool strike; 86 bool strike;
86 bool diagonal_strike; 87 bool diagonal_strike;
87 bool underline; 88 bool underline;
88 89
89 private: 90 private:
90 DISALLOW_COPY_AND_ASSIGN(TextRunHarfBuzz); 91 DISALLOW_COPY_AND_ASSIGN(TextRunHarfBuzz);
91 }; 92 };
92 93
93 // Manages the list of TextRunHarfBuzz and its logical <-> visual index mapping. 94 // Manages the list of TextRunHarfBuzz and its logical <-> visual index mapping.
94 class TextRunList { 95 class TextRunList {
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223 void ItemizeTextToRuns(const base::string16& string, 224 void ItemizeTextToRuns(const base::string16& string,
224 internal::TextRunList* run_list_out); 225 internal::TextRunList* run_list_out);
225 226
226 // Helper method for ShapeRun() that calls ShapeRunWithFont() with |text|, 227 // Helper method for ShapeRun() that calls ShapeRunWithFont() with |text|,
227 // |run|, |font|, and |render_params|, returning true if the font provides 228 // |run|, |font|, and |render_params|, returning true if the font provides
228 // all the glyphs needed for |run|, and false otherwise. Additionally updates 229 // all the glyphs needed for |run|, and false otherwise. Additionally updates
229 // |best_font|, |best_render_params|, and |best_missing_glyphs| if |font| 230 // |best_font|, |best_render_params|, and |best_missing_glyphs| if |font|
230 // has fewer than |best_missing_glyphs| missing glyphs. 231 // has fewer than |best_missing_glyphs| missing glyphs.
231 bool CompareFamily(const base::string16& text, 232 bool CompareFamily(const base::string16& text,
232 const Font& font, 233 const Font& font,
233 const gfx::FontRenderParams& render_params, 234 const FontRenderParams& render_params,
234 internal::TextRunHarfBuzz* run, 235 internal::TextRunHarfBuzz* run,
235 Font* best_font, 236 Font* best_font,
236 gfx::FontRenderParams* best_render_params, 237 FontRenderParams* best_render_params,
237 size_t* best_missing_glyphs); 238 size_t* best_missing_glyphs);
238 239
239 // Shape the glyphs of all runs in |run_list| using |text|. 240 // Shape the glyphs of all runs in |run_list| using |text|.
240 void ShapeRunList(const base::string16& text, 241 void ShapeRunList(const base::string16& text,
241 internal::TextRunList* run_list); 242 internal::TextRunList* run_list);
242 243
243 // Shape the glyphs needed for the |run| within the |text|. 244 // Shape the glyphs needed for the |run| within the |text|.
244 void ShapeRun(const base::string16& text, 245 void ShapeRun(const base::string16& text,
245 internal::TextRunHarfBuzz* run); 246 internal::TextRunHarfBuzz* run);
246 bool ShapeRunWithFont(const base::string16& text, 247 bool ShapeRunWithFont(const base::string16& text,
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278 279
279 // Fixed width of glyphs. This should only be set in test environments. 280 // Fixed width of glyphs. This should only be set in test environments.
280 float glyph_width_for_test_; 281 float glyph_width_for_test_;
281 282
282 DISALLOW_COPY_AND_ASSIGN(RenderTextHarfBuzz); 283 DISALLOW_COPY_AND_ASSIGN(RenderTextHarfBuzz);
283 }; 284 };
284 285
285 } // namespace gfx 286 } // namespace gfx
286 287
287 #endif // UI_GFX_RENDER_TEXT_HARFBUZZ_H_ 288 #endif // UI_GFX_RENDER_TEXT_HARFBUZZ_H_
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