1 /* 2 * Copyright (c) 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 TYPEFACE_IMPL_H 17 #define TYPEFACE_IMPL_H 18 19 #include <cstdint> 20 #include <string> 21 22 #include "impl_interface/base_impl.h" 23 #include "text/font_arguments.h" 24 #include "text/font_style.h" 25 #include "utils/data.h" 26 27 namespace OHOS { 28 namespace Rosen { 29 namespace Drawing { 30 class Typeface; 31 class TypefaceImpl : public BaseImpl { 32 public: 33 ~TypefaceImpl() override = default; 34 virtual std::string GetFamilyName() const = 0; 35 virtual FontStyle GetFontStyle() const = 0; 36 virtual size_t GetTableSize(uint32_t tag) const = 0; 37 virtual size_t GetTableData(uint32_t tag, size_t offset, size_t length, void* data) const = 0; 38 virtual bool GetItalic() const = 0; 39 virtual uint32_t GetUniqueID() const = 0; 40 virtual int32_t GetUnitsPerEm() const = 0; 41 virtual std::shared_ptr<Typeface> MakeClone(const FontArguments& args) const = 0; 42 virtual bool IsCustomTypeface() const = 0; 43 virtual std::shared_ptr<Data> Serialize() const = 0; 44 // provide default implementation for hashes 45 virtual uint32_t GetHash() const = 0; 46 virtual void SetHash(uint32_t) = 0; 47 48 protected: 49 TypefaceImpl() noexcept = default; 50 }; 51 } // namespace Drawing 52 } // namespace Rosen 53 } // namespace OHOS 54 #endif