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 REGION_H 17 #define REGION_H 18 19 #include "impl_interface/region_impl.h" 20 21 namespace OHOS { 22 namespace Rosen { 23 namespace Drawing { 24 enum class RegionOp { 25 DIFFERENCE, 26 INTERSECT, 27 UNION, 28 XOR, 29 REVERSE_DIFFERENCE, 30 REPLACE, 31 }; 32 class Region { 33 public: 34 Region(); 35 virtual ~Region() = default; 36 GetDrawingType()37 virtual DrawingType GetDrawingType() const 38 { 39 return DrawingType::COMMON; 40 } 41 42 /* 43 * @brief Constructs a rectangular Region matching the bounds of rect. 44 * @param rectI Bounds of constructed Region. 45 * @return If rectI is empty, constructs empty and returns false. 46 */ 47 virtual bool SetRect(const RectI& rectI); 48 49 /* 50 * @brief Constructs Region to match outline of path within clip. 51 * @param &path Providing outline 52 * @param &clip Containing path. 53 * @return Return true if constructed Region is not empty. 54 */ 55 virtual bool SetPath(const Path& path, const Region& clip); 56 57 /* 58 * @brief Determines whether it intersects other. 59 * @param &other Other Region object. 60 * @return If true indicates that other and Region have area in common. 61 */ 62 bool IsIntersects(const Region& other) const; 63 64 /* 65 * @brief Replaces Region with the result of Region op region. 66 * @param ®ion Operand. 67 * @param op Operation type. 68 * @return Returns true if replaced Region is not empty. 69 */ 70 virtual bool Op(const Region& region, RegionOp op); 71 72 /* 73 * @brief Get the adaptation layer instance, called in the adaptation layer. 74 * @return Adaptation Layer instance. 75 */ 76 template<typename T> GetImpl()77 const std::shared_ptr<T> GetImpl() const 78 { 79 return impl_->DowncastingTo<T>(); 80 } 81 82 private: 83 std::shared_ptr<RegionImpl> impl_; 84 }; 85 } // namespace Drawing 86 } // namespace Rosen 87 } // namespace OHOS 88 #endif 89