1 /* 2 * Copyright 2018 Google Inc. 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 TXT_FONT_ASSET_PROVIDER_H_ 18 #define TXT_FONT_ASSET_PROVIDER_H_ 19 20 #include "third_party/skia/include/core/SkFontMgr.h" 21 22 namespace txt { 23 24 class FontAssetProvider { 25 public: 26 virtual ~FontAssetProvider() = default; 27 28 virtual size_t GetFamilyCount() const = 0; 29 virtual std::string GetFamilyName(int index) const = 0; 30 virtual SkFontStyleSet* MatchFamily(const std::string& family_name) = 0; 31 32 protected: 33 static std::string CanonicalFamilyName(std::string family_name); 34 }; 35 36 } // namespace txt 37 38 #endif // TXT_FONT_ASSET_PROVIDER_H_ 39