1 /* 2 * Copyright (c) 2021 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 ROSEN_ENGINE_CORE_RENDER_RS_FILTER_H 17 #define ROSEN_ENGINE_CORE_RENDER_RS_FILTER_H 18 19 #include <memory> 20 21 #include "common/rs_macros.h" 22 23 namespace OHOS { 24 namespace Rosen { 25 class RS_EXPORT RSFilter : public std::enable_shared_from_this<RSFilter> { 26 public: 27 virtual ~RSFilter(); 28 static std::shared_ptr<RSFilter> CreateBlurFilter(float blurRadiusX, float blurRadiusY); 29 30 enum FilterType { 31 NONE = 0, 32 BLUR, 33 }; GetFilterType()34 FilterType GetFilterType() const 35 { 36 return type_; 37 } IsValid()38 bool IsValid() const 39 { 40 return type_ != FilterType::NONE; 41 } 42 protected: 43 FilterType type_; 44 RSFilter(); Add(const std::shared_ptr<RSFilter> & rhs)45 virtual std::shared_ptr<RSFilter> Add(const std::shared_ptr<RSFilter>& rhs) { return nullptr; } Sub(const std::shared_ptr<RSFilter> & rhs)46 virtual std::shared_ptr<RSFilter> Sub(const std::shared_ptr<RSFilter>& rhs) { return nullptr; } Multiply(float rhs)47 virtual std::shared_ptr<RSFilter> Multiply(float rhs) { return nullptr; } Negate()48 virtual std::shared_ptr<RSFilter> Negate() { return nullptr; } 49 friend std::shared_ptr<RSFilter> operator+(const std::shared_ptr<RSFilter>& lhs, const std::shared_ptr<RSFilter>& rhs); 50 friend std::shared_ptr<RSFilter> operator-(const std::shared_ptr<RSFilter>& lhs, const std::shared_ptr<RSFilter>& rhs); 51 friend std::shared_ptr<RSFilter> operator*(const std::shared_ptr<RSFilter>& lhs, float rhs); 52 }; 53 } // namespace Rosen 54 } // namespace OHOS 55 56 #endif // ROSEN_ENGINE_CORE_RENDER_RS_FILTER_H 57