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Side by Side Diff: src/pdf/SkPDFFont.h

Issue 1316233002: Style Change: NULL->nullptr (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: 2015-08-27 (Thursday) 10:25:06 EDT Created 5 years, 3 months ago
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1 1
2 /* 2 /*
3 * Copyright 2011 Google Inc. 3 * Copyright 2011 Google Inc.
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 9
10 #ifndef SkPDFFont_DEFINED 10 #ifndef SkPDFFont_DEFINED
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75 attached to it in order to embed the font. SkPDFFonts are canonicalized 75 attached to it in order to embed the font. SkPDFFonts are canonicalized
76 so that resource deduplication will only include one copy of a font. 76 so that resource deduplication will only include one copy of a font.
77 This class uses the same pattern as SkPDFGraphicState, a static weak 77 This class uses the same pattern as SkPDFGraphicState, a static weak
78 reference to each instantiated class. 78 reference to each instantiated class.
79 */ 79 */
80 class SkPDFFont : public SkPDFDict { 80 class SkPDFFont : public SkPDFDict {
81 81
82 public: 82 public:
83 virtual ~SkPDFFont(); 83 virtual ~SkPDFFont();
84 84
85 /** Returns the typeface represented by this class. Returns NULL for the 85 /** Returns the typeface represented by this class. Returns nullptr for the
86 * default typeface. 86 * default typeface.
87 */ 87 */
88 SkTypeface* typeface(); 88 SkTypeface* typeface();
89 89
90 /** Returns the font type represented in this font. For Type0 fonts, 90 /** Returns the font type represented in this font. For Type0 fonts,
91 * returns the type of the decendant font. 91 * returns the type of the decendant font.
92 */ 92 */
93 virtual SkAdvancedTypefaceMetrics::FontType getType(); 93 virtual SkAdvancedTypefaceMetrics::FontType getType();
94 94
95 /** Returns true if this font encoding supports glyph IDs above 255. 95 /** Returns true if this font encoding supports glyph IDs above 255.
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126 * @param typeface The typeface to find. 126 * @param typeface The typeface to find.
127 * @param glyphID Specify which section of a large font is of interest. 127 * @param glyphID Specify which section of a large font is of interest.
128 */ 128 */
129 static SkPDFFont* GetFontResource(SkPDFCanon* canon, 129 static SkPDFFont* GetFontResource(SkPDFCanon* canon,
130 SkTypeface* typeface, 130 SkTypeface* typeface,
131 uint16_t glyphID); 131 uint16_t glyphID);
132 132
133 /** Subset the font based on usage set. Returns a SkPDFFont instance with 133 /** Subset the font based on usage set. Returns a SkPDFFont instance with
134 * subset. 134 * subset.
135 * @param usage Glyph subset requested. 135 * @param usage Glyph subset requested.
136 * @return NULL if font does not support subsetting, a new instance 136 * @return nullptr if font does not support subsetting, a new instanc e
137 * of SkPDFFont otherwise. 137 * of SkPDFFont otherwise.
138 */ 138 */
139 virtual SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage); 139 virtual SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage);
140 140
141 enum Match { 141 enum Match {
142 kExact_Match, 142 kExact_Match,
143 kRelated_Match, 143 kRelated_Match,
144 kNot_Match, 144 kNot_Match,
145 }; 145 };
146 static Match IsMatch(SkPDFFont* existingFont, 146 static Match IsMatch(SkPDFFont* existingFont,
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168 168
169 // Add common entries to FontDescriptor. 169 // Add common entries to FontDescriptor.
170 bool addCommonFontDescriptorEntries(int16_t defaultWidth); 170 bool addCommonFontDescriptorEntries(int16_t defaultWidth);
171 171
172 /** Set fFirstGlyphID and fLastGlyphID to span at most 255 glyphs, 172 /** Set fFirstGlyphID and fLastGlyphID to span at most 255 glyphs,
173 * including the passed glyphID. 173 * including the passed glyphID.
174 */ 174 */
175 void adjustGlyphRangeForSingleByteEncoding(uint16_t glyphID); 175 void adjustGlyphRangeForSingleByteEncoding(uint16_t glyphID);
176 176
177 // Generate ToUnicode table according to glyph usage subset. 177 // Generate ToUnicode table according to glyph usage subset.
178 // If subset is NULL, all available glyph ids will be used. 178 // If subset is nullptr, all available glyph ids will be used.
179 void populateToUnicodeTable(const SkPDFGlyphSet* subset); 179 void populateToUnicodeTable(const SkPDFGlyphSet* subset);
180 180
181 // Create instances of derived types based on fontInfo. 181 // Create instances of derived types based on fontInfo.
182 static SkPDFFont* Create(SkPDFCanon* canon, 182 static SkPDFFont* Create(SkPDFCanon* canon,
183 const SkAdvancedTypefaceMetrics* fontInfo, 183 const SkAdvancedTypefaceMetrics* fontInfo,
184 SkTypeface* typeface, 184 SkTypeface* typeface,
185 uint16_t glyphID, 185 uint16_t glyphID,
186 SkPDFDict* relatedFontDescriptor); 186 SkPDFDict* relatedFontDescriptor);
187 187
188 static bool Find(uint32_t fontID, uint16_t glyphID, int* index); 188 static bool Find(uint32_t fontID, uint16_t glyphID, int* index);
189 189
190 private: 190 private:
191 SkAutoTUnref<SkTypeface> fTypeface; 191 SkAutoTUnref<SkTypeface> fTypeface;
192 192
193 // The glyph IDs accessible with this font. For Type1 (non CID) fonts, 193 // The glyph IDs accessible with this font. For Type1 (non CID) fonts,
194 // this will be a subset if the font has more than 255 glyphs. 194 // this will be a subset if the font has more than 255 glyphs.
195 uint16_t fFirstGlyphID; 195 uint16_t fFirstGlyphID;
196 uint16_t fLastGlyphID; 196 uint16_t fLastGlyphID;
197 SkAutoTUnref<const SkAdvancedTypefaceMetrics> fFontInfo; 197 SkAutoTUnref<const SkAdvancedTypefaceMetrics> fFontInfo;
198 SkAutoTUnref<SkPDFDict> fDescriptor; 198 SkAutoTUnref<SkPDFDict> fDescriptor;
199 199
200 SkAdvancedTypefaceMetrics::FontType fFontType; 200 SkAdvancedTypefaceMetrics::FontType fFontType;
201 201
202 typedef SkPDFDict INHERITED; 202 typedef SkPDFDict INHERITED;
203 }; 203 };
204 204
205 #endif 205 #endif
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