1 /* 2 * Copyright (c) 2022-2023 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 #ifndef RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PROXY_RENDER_NODE_H 16 #define RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PROXY_RENDER_NODE_H 17 18 #include "common/rs_macros.h" 19 #include "modifier/rs_modifier_type.h" 20 #include "pipeline/rs_render_node.h" 21 22 namespace OHOS { 23 namespace Rosen { 24 class RSSurfaceRenderNode; 25 class RSB_EXPORT RSProxyRenderNode : public RSRenderNode { 26 public: 27 using WeakPtr = std::weak_ptr<RSProxyRenderNode>; 28 using SharedPtr = std::shared_ptr<RSProxyRenderNode>; 29 static inline constexpr RSRenderNodeType Type = RSRenderNodeType::PROXY_NODE; GetType()30 RSRenderNodeType GetType() const override 31 { 32 return Type; 33 } 34 35 explicit RSProxyRenderNode( 36 NodeId id, std::weak_ptr<RSSurfaceRenderNode> target, NodeId targetId, std::weak_ptr<RSContext> context = {}); 37 ~RSProxyRenderNode() override; 38 39 void Prepare(const std::shared_ptr<RSNodeVisitor>& visitor) override; 40 void Process(const std::shared_ptr<RSNodeVisitor>& visitor) override; 41 42 // Transfer the rendering context variables (matrix/alpha/clip) from the proxy node to the target node, usually a 43 // surface node. Note that: 44 // 1. All three variables (alpha, matrix, and clipRegion) are RELATIVE to its parent node. 45 // 2. Alpha can be processed as an absolute value, as its parent (surface) node's alpha should always be 1.0f. 46 // 3. The matrix and clipRegion should be applied according to the parent node's matrix. 47 #ifndef USE_ROSEN_DRAWING 48 void SetContextMatrix(const std::optional<SkMatrix>& transform); 49 void SetContextAlpha(float alpha); 50 void SetContextClipRegion(const std::optional<SkRect>& clipRegion); 51 #else 52 void SetContextMatrix(const std::optional<Drawing::Matrix>& transform); 53 void SetContextAlpha(float alpha); 54 void SetContextClipRegion(const std::optional<Drawing::Rect>& clipRegion); 55 #endif 56 57 void ResetContextVariableCache(); 58 protected: 59 void OnTreeStateChanged() override; 60 61 private: 62 std::weak_ptr<RSSurfaceRenderNode> target_; 63 NodeId targetId_; 64 65 #ifndef USE_ROSEN_DRAWING 66 std::optional<SkMatrix> contextMatrix_; 67 float contextAlpha_ = 0.0f; 68 std::optional<SkRect> contextClipRect_; 69 #else 70 std::optional<Drawing::Matrix> contextMatrix_; 71 float contextAlpha_ = 0.0f; 72 std::optional<Drawing::Rect> contextClipRect_; 73 #endif 74 75 void CleanUp(bool removeModifiers); 76 77 friend class RSUniRenderVisitor; 78 }; 79 } // namespace Rosen 80 } // namespace OHOS 81 82 #endif // RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PROXY_RENDER_NODE_H 83