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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 |
11 #define SkPDFFont_DEFINED | 11 #define SkPDFFont_DEFINED |
12 | 12 |
13 #include "SkAdvancedTypefaceMetrics.h" | 13 #include "SkAdvancedTypefaceMetrics.h" |
14 #include "SkBitSet.h" | 14 #include "SkBitSet.h" |
15 #include "SkPDFTypes.h" | 15 #include "SkPDFTypes.h" |
16 #include "SkTDArray.h" | 16 #include "SkTDArray.h" |
17 #include "SkThread.h" | 17 #include "SkThread.h" |
18 #include "SkTypeface.h" | 18 #include "SkTypeface.h" |
19 | 19 |
20 class SkPaint; | 20 class SkPaint; |
| 21 class SkPDFCanon; |
21 class SkPDFCatalog; | 22 class SkPDFCatalog; |
22 class SkPDFFont; | 23 class SkPDFFont; |
23 | 24 |
24 class SkPDFGlyphSet : SkNoncopyable { | 25 class SkPDFGlyphSet : SkNoncopyable { |
25 public: | 26 public: |
26 SkPDFGlyphSet(); | 27 SkPDFGlyphSet(); |
27 | 28 |
28 void set(const uint16_t* glyphIDs, int numGlyphs); | 29 void set(const uint16_t* glyphIDs, int numGlyphs); |
29 bool has(uint16_t glyphID) const; | 30 bool has(uint16_t glyphID) const; |
30 void merge(const SkPDFGlyphSet& usage); | 31 void merge(const SkPDFGlyphSet& usage); |
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119 int glyphsToPDFFontEncoding(uint16_t* glyphIDs, int numGlyphs); | 120 int glyphsToPDFFontEncoding(uint16_t* glyphIDs, int numGlyphs); |
120 | 121 |
121 /** Get the font resource for the passed typeface and glyphID. The | 122 /** Get the font resource for the passed typeface and glyphID. The |
122 * reference count of the object is incremented and it is the caller's | 123 * reference count of the object is incremented and it is the caller's |
123 * responsibility to unreference it when done. This is needed to | 124 * responsibility to unreference it when done. This is needed to |
124 * accommodate the weak reference pattern used when the returned object | 125 * accommodate the weak reference pattern used when the returned object |
125 * is new and has no other references. | 126 * is new and has no other references. |
126 * @param typeface The typeface to find. | 127 * @param typeface The typeface to find. |
127 * @param glyphID Specify which section of a large font is of interest. | 128 * @param glyphID Specify which section of a large font is of interest. |
128 */ | 129 */ |
129 static SkPDFFont* GetFontResource(SkTypeface* typeface, uint16_t glyphID); | 130 static SkPDFFont* GetFontResource(SkPDFCanon* canon, |
| 131 SkTypeface* typeface, |
| 132 uint16_t glyphID); |
130 | 133 |
131 /** Subset the font based on usage set. Returns a SkPDFFont instance with | 134 /** Subset the font based on usage set. Returns a SkPDFFont instance with |
132 * subset. | 135 * subset. |
133 * @param usage Glyph subset requested. | 136 * @param usage Glyph subset requested. |
134 * @return NULL if font does not support subsetting, a new instance | 137 * @return NULL if font does not support subsetting, a new instance |
135 * of SkPDFFont otherwise. | 138 * of SkPDFFont otherwise. |
136 */ | 139 */ |
137 virtual SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage); | 140 virtual SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage); |
138 | 141 |
139 enum Match { | 142 enum Match { |
140 kExact_Match, | 143 kExact_Match, |
141 kRelated_Match, | 144 kRelated_Match, |
142 kNot_Match, | 145 kNot_Match, |
143 }; | 146 }; |
144 static Match IsMatch(SkPDFFont* existingFont, | 147 static Match IsMatch(SkPDFFont* existingFont, |
145 uint32_t existingFontID, | 148 uint32_t existingFontID, |
146 uint16_t existingGlyphID, | 149 uint16_t existingGlyphID, |
147 uint32_t searchFontID, | 150 uint32_t searchFontID, |
148 uint16_t searchGlyphID); | 151 uint16_t searchGlyphID); |
149 | 152 |
150 protected: | 153 protected: |
| 154 SkPDFCanon* const fCanon; |
| 155 |
151 // Common constructor to handle common members. | 156 // Common constructor to handle common members. |
152 SkPDFFont(const SkAdvancedTypefaceMetrics* fontInfo, SkTypeface* typeface, | 157 SkPDFFont(SkPDFCanon* canon, |
| 158 const SkAdvancedTypefaceMetrics* fontInfo, |
| 159 SkTypeface* typeface, |
153 SkPDFDict* relatedFontDescriptor); | 160 SkPDFDict* relatedFontDescriptor); |
154 | 161 |
155 // Accessors for subclass. | 162 // Accessors for subclass. |
156 const SkAdvancedTypefaceMetrics* fontInfo(); | 163 const SkAdvancedTypefaceMetrics* fontInfo(); |
157 void setFontInfo(const SkAdvancedTypefaceMetrics* info); | 164 void setFontInfo(const SkAdvancedTypefaceMetrics* info); |
158 uint16_t firstGlyphID() const; | 165 uint16_t firstGlyphID() const; |
159 uint16_t lastGlyphID() const; | 166 uint16_t lastGlyphID() const; |
160 void setLastGlyphID(uint16_t glyphID); | 167 void setLastGlyphID(uint16_t glyphID); |
161 | 168 |
162 // Accessors for FontDescriptor associated with this object. | 169 // Accessors for FontDescriptor associated with this object. |
163 SkPDFDict* getFontDescriptor(); | 170 SkPDFDict* getFontDescriptor(); |
164 void setFontDescriptor(SkPDFDict* descriptor); | 171 void setFontDescriptor(SkPDFDict* descriptor); |
165 | 172 |
166 // Add common entries to FontDescriptor. | 173 // Add common entries to FontDescriptor. |
167 bool addCommonFontDescriptorEntries(int16_t defaultWidth); | 174 bool addCommonFontDescriptorEntries(int16_t defaultWidth); |
168 | 175 |
169 /** Set fFirstGlyphID and fLastGlyphID to span at most 255 glyphs, | 176 /** Set fFirstGlyphID and fLastGlyphID to span at most 255 glyphs, |
170 * including the passed glyphID. | 177 * including the passed glyphID. |
171 */ | 178 */ |
172 void adjustGlyphRangeForSingleByteEncoding(uint16_t glyphID); | 179 void adjustGlyphRangeForSingleByteEncoding(uint16_t glyphID); |
173 | 180 |
174 // Generate ToUnicode table according to glyph usage subset. | 181 // Generate ToUnicode table according to glyph usage subset. |
175 // If subset is NULL, all available glyph ids will be used. | 182 // If subset is NULL, all available glyph ids will be used. |
176 void populateToUnicodeTable(const SkPDFGlyphSet* subset); | 183 void populateToUnicodeTable(const SkPDFGlyphSet* subset); |
177 | 184 |
178 // Create instances of derived types based on fontInfo. | 185 // Create instances of derived types based on fontInfo. |
179 static SkPDFFont* Create(const SkAdvancedTypefaceMetrics* fontInfo, | 186 static SkPDFFont* Create(SkPDFCanon* canon, |
180 SkTypeface* typeface, uint16_t glyphID, | 187 const SkAdvancedTypefaceMetrics* fontInfo, |
| 188 SkTypeface* typeface, |
| 189 uint16_t glyphID, |
181 SkPDFDict* relatedFontDescriptor); | 190 SkPDFDict* relatedFontDescriptor); |
182 | 191 |
183 static bool Find(uint32_t fontID, uint16_t glyphID, int* index); | 192 static bool Find(uint32_t fontID, uint16_t glyphID, int* index); |
184 | 193 |
185 private: | 194 private: |
186 SkAutoTUnref<SkTypeface> fTypeface; | 195 SkAutoTUnref<SkTypeface> fTypeface; |
187 | 196 |
188 // The glyph IDs accessible with this font. For Type1 (non CID) fonts, | 197 // The glyph IDs accessible with this font. For Type1 (non CID) fonts, |
189 // this will be a subset if the font has more than 255 glyphs. | 198 // this will be a subset if the font has more than 255 glyphs. |
190 uint16_t fFirstGlyphID; | 199 uint16_t fFirstGlyphID; |
191 uint16_t fLastGlyphID; | 200 uint16_t fLastGlyphID; |
192 SkAutoTUnref<const SkAdvancedTypefaceMetrics> fFontInfo; | 201 SkAutoTUnref<const SkAdvancedTypefaceMetrics> fFontInfo; |
193 SkAutoTUnref<SkPDFDict> fDescriptor; | 202 SkAutoTUnref<SkPDFDict> fDescriptor; |
194 | 203 |
195 SkAdvancedTypefaceMetrics::FontType fFontType; | 204 SkAdvancedTypefaceMetrics::FontType fFontType; |
196 | 205 |
197 typedef SkPDFDict INHERITED; | 206 typedef SkPDFDict INHERITED; |
198 }; | 207 }; |
199 | 208 |
200 #endif | 209 #endif |
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