1 /* 2 * Copyright (c) 2021-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_FONT_FLUTTER_FONT_COLLECTION_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_FONT_FLUTTER_FONT_COLLECTION_H 18 19 #include <future> 20 #include <mutex> 21 22 #include "flutter/common/task_runners.h" 23 #include "flutter/lib/ui/text/font_collection.h" 24 25 #include "base/utils/macros.h" 26 #include "base/utils/noncopyable.h" 27 #include "core/components/font/font_collection.h" 28 29 namespace OHOS::Ace { 30 31 class ACE_EXPORT FlutterFontCollection : public FontCollection { 32 public: 33 static FlutterFontCollection& GetInstance(); 34 35 std::shared_ptr<txt::FontCollection> GetFontCollection() override; 36 37 void LoadFontFromList(const uint8_t* fontData, size_t length, std::string familyName); 38 39 void CreateFontCollection(const fml::RefPtr<fml::TaskRunner>& ioTaskRunner); 40 41 void VaryFontCollectionWithFontWeightScale(float fontWeightScale); 42 43 void LoadSystemFont(); 44 45 void SetIsZawgyiMyanmar(bool isZawgyiMyanmar); 46 47 void UnloadFont(); 48 49 private: 50 std::unique_ptr<flutter::FontCollection> fontCollection_; 51 std::vector<std::string> families_; 52 53 std::promise<bool> promise_; 54 std::shared_future<bool> future_ = promise_.get_future(); 55 bool isInit_ = false; 56 bool isCompleted_ = false; 57 bool isUseFlutterEngine = true; 58 bool isZawgyiMyanmar_ = false; 59 std::once_flag fontFlag_; 60 61 static FlutterFontCollection instance; 62 }; 63 64 } // namespace OHOS::Ace 65 66 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_FONT_FLUTTER_FONT_COLLECTION_H 67