1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MINIKIN_FONT_FAMILY_H 18 #define MINIKIN_FONT_FAMILY_H 19 20 #include <memory> 21 #include <string> 22 #include <unordered_set> 23 #include <vector> 24 25 #include "minikin/FamilyVariant.h" 26 #include "minikin/Font.h" 27 #include "minikin/FontStyle.h" 28 #include "minikin/HbUtils.h" 29 #include "minikin/Macros.h" 30 #include "minikin/SparseBitSet.h" 31 32 namespace minikin { 33 34 class FontFamily { 35 public: 36 explicit FontFamily(std::vector<Font>&& fonts); 37 FontFamily(FamilyVariant variant, std::vector<Font>&& fonts); 38 FontFamily(uint32_t localeListId, FamilyVariant variant, std::vector<Font>&& fonts, 39 bool isCustomFallback); 40 41 FakedFont getClosestMatch(FontStyle style) const; 42 localeListId()43 uint32_t localeListId() const { return mLocaleListId; } variant()44 FamilyVariant variant() const { return mVariant; } 45 46 // API's for enumerating the fonts in a family. These don't guarantee any particular order getNumFonts()47 size_t getNumFonts() const { return mFonts.size(); } getFont(size_t index)48 const Font* getFont(size_t index) const { return &mFonts[index]; } getStyle(size_t index)49 FontStyle getStyle(size_t index) const { return mFonts[index].style(); } isColorEmojiFamily()50 bool isColorEmojiFamily() const { return mIsColorEmoji; } supportedAxes()51 const std::unordered_set<AxisTag>& supportedAxes() const { return mSupportedAxes; } isCustomFallback()52 bool isCustomFallback() const { return mIsCustomFallback; } 53 54 // Get Unicode coverage. getCoverage()55 const SparseBitSet& getCoverage() const { return mCoverage; } 56 57 // Returns true if the font has a glyph for the code point and variation selector pair. 58 // Caller should acquire a lock before calling the method. 59 bool hasGlyph(uint32_t codepoint, uint32_t variationSelector) const; 60 61 // Returns true if this font family has a variaion sequence table (cmap format 14 subtable). hasVSTable()62 bool hasVSTable() const { return !mCmapFmt14Coverage.empty(); } 63 64 // Creates new FontFamily based on this family while applying font variations. Returns nullptr 65 // if none of variations apply to this family. 66 std::shared_ptr<FontFamily> createFamilyWithVariation( 67 const std::vector<FontVariation>& variations) const; 68 69 private: 70 void computeCoverage(); 71 72 uint32_t mLocaleListId; 73 FamilyVariant mVariant; 74 std::vector<Font> mFonts; 75 std::unordered_set<AxisTag> mSupportedAxes; 76 bool mIsColorEmoji; 77 bool mIsCustomFallback; 78 79 SparseBitSet mCoverage; 80 std::vector<std::unique_ptr<SparseBitSet>> mCmapFmt14Coverage; 81 82 MINIKIN_PREVENT_COPY_AND_ASSIGN(FontFamily); 83 }; 84 85 } // namespace minikin 86 87 #endif // MINIKIN_FONT_FAMILY_H 88