The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/sfnt/SkOTUtils.h
gfx/skia/trunk/src/sfnt/SkOTUtils.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:748d0b33cd84 |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkOTUtils_DEFINED | |
| 9 #define SkOTUtils_DEFINED | |
| 10 | |
| 11 #include "SkOTTableTypes.h" | |
| 12 #include "SkOTTable_name.h" | |
| 13 #include "SkTypeface.h" | |
| 14 | |
| 15 class SkData; | |
| 16 class SkStream; | |
| 17 | |
| 18 struct SkOTUtils { | |
| 19 /** | |
| 20 * Calculates the OpenType checksum for data. | |
| 21 */ | |
| 22 static uint32_t CalcTableChecksum(SK_OT_ULONG *data, size_t length); | |
| 23 | |
| 24 /** | |
| 25 * Renames an sfnt font. On failure (invalid data or not an sfnt font) | |
| 26 * returns NULL. | |
| 27 * | |
| 28 * Essentially, this removes any existing 'name' table and replaces it | |
| 29 * with a new one in which FontFamilyName, FontSubfamilyName, | |
| 30 * UniqueFontIdentifier, FullFontName, and PostscriptName are fontName. | |
| 31 * | |
| 32 * The new 'name' table records will be written with the Windows, | |
| 33 * UnicodeBMPUCS2, and English_UnitedStates settings. | |
| 34 * | |
| 35 * fontName and fontNameLen must be specified in terms of ASCII chars. | |
| 36 */ | |
| 37 static SkData* RenameFont(SkStream* fontData, const char* fontName, int fontNameLen); | |
| 38 | |
| 39 /** An implementation of LocalizedStrings which obtains it's data from a 'name' table. */ | |
| 40 class LocalizedStrings_NameTable : public SkTypeface::LocalizedStrings { | |
| 41 public: | |
| 42 /** Takes ownership of the nameTableData and will free it with SK_DELETE. */ | |
| 43 LocalizedStrings_NameTable(SkOTTableName* nameTableData, | |
| 44 SkOTTableName::Record::NameID::Predefined::Value types[], | |
| 45 int typesCount) | |
| 46 : fTypes(types), fTypesCount(typesCount), fTypesIndex(0) | |
| 47 , fNameTableData(nameTableData), fFamilyNameIter(*nameTableData, fTypes[fTypesIndex]) | |
| 48 { } | |
| 49 | |
| 50 /** Creates an iterator over all the family names in the 'name' table of a typeface. | |
| 51 * If no valid 'name' table can be found, returns NULL. | |
| 52 */ | |
| 53 static LocalizedStrings_NameTable* CreateForFamilyNames(const SkTypeface& typeface); | |
| 54 | |
| 55 virtual bool next(SkTypeface::LocalizedString* localizedString) SK_OVERRIDE; | |
| 56 private: | |
| 57 static SkOTTableName::Record::NameID::Predefined::Value familyNameTypes[3]; | |
| 58 | |
| 59 SkOTTableName::Record::NameID::Predefined::Value* fTypes; | |
| 60 int fTypesCount; | |
| 61 int fTypesIndex; | |
| 62 SkAutoTDeleteArray<SkOTTableName> fNameTableData; | |
| 63 SkOTTableName::Iterator fFamilyNameIter; | |
| 64 }; | |
| 65 | |
| 66 /** An implementation of LocalizedStrings which has one name. */ | |
| 67 class LocalizedStrings_SingleName : public SkTypeface::LocalizedStrings { | |
| 68 public: | |
| 69 LocalizedStrings_SingleName(SkString name, SkString language) | |
| 70 : fName(name), fLanguage(language), fHasNext(true) | |
| 71 { } | |
| 72 | |
| 73 virtual bool next(SkTypeface::LocalizedString* localizedString) SK_OVERRIDE { | |
| 74 localizedString->fString = fName; | |
| 75 localizedString->fLanguage = fLanguage; | |
| 76 | |
| 77 bool hadNext = fHasNext; | |
| 78 fHasNext = false; | |
| 79 return hadNext; | |
| 80 } | |
| 81 | |
| 82 private: | |
| 83 SkString fName; | |
| 84 SkString fLanguage; | |
| 85 bool fHasNext; | |
| 86 }; | |
| 87 }; | |
| 88 | |
| 89 #endif |
