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 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 enum BLUR_COLOR_MODE : int { 26 PRE_DEFINED = 0, // use the pre-defined mask color 27 AVERAGE = 1, // use the average color of the blurred area as mask color 28 DEFAULT = PRE_DEFINED 29 }; 30 31 class RSB_EXPORT RSFilter : public std::enable_shared_from_this<RSFilter> { 32 public: 33 virtual ~RSFilter(); 34 static std::shared_ptr<RSFilter> CreateBlurFilter(float blurRadiusX, float blurRadiusY); 35 static std::shared_ptr<RSFilter> CreateMaterialFilter(int style, float dipScale, BLUR_COLOR_MODE mode = DEFAULT); 36 37 enum FilterType { 38 NONE = 0, 39 BLUR, 40 MATERIAL, 41 }; GetFilterType()42 FilterType GetFilterType() const 43 { 44 return type_; 45 } IsValid()46 bool IsValid() const 47 { 48 return type_ != FilterType::NONE; 49 } 50 51 protected: 52 FilterType type_; 53 RSFilter(); Add(const std::shared_ptr<RSFilter> & rhs)54 virtual std::shared_ptr<RSFilter> Add(const std::shared_ptr<RSFilter>& rhs) { return nullptr; } Sub(const std::shared_ptr<RSFilter> & rhs)55 virtual std::shared_ptr<RSFilter> Sub(const std::shared_ptr<RSFilter>& rhs) { return nullptr; } Multiply(float rhs)56 virtual std::shared_ptr<RSFilter> Multiply(float rhs) { return nullptr; } Negate()57 virtual std::shared_ptr<RSFilter> Negate() { return nullptr; } 58 friend RSB_EXPORT std::shared_ptr<RSFilter> operator+(const std::shared_ptr<RSFilter>& lhs, 59 const std::shared_ptr<RSFilter>& rhs); 60 friend RSB_EXPORT std::shared_ptr<RSFilter> operator-(const std::shared_ptr<RSFilter>& lhs, 61 const std::shared_ptr<RSFilter>& rhs); 62 friend RSB_EXPORT std::shared_ptr<RSFilter> operator*(const std::shared_ptr<RSFilter>& lhs, float rhs); 63 }; 64 } // namespace Rosen 65 } // namespace OHOS 66 67 #endif // ROSEN_ENGINE_CORE_RENDER_RS_FILTER_H 68