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 RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PAINT_FILTER_CANVAS_H 17 #define RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PAINT_FILTER_CANVAS_H 18 19 #include <include/utils/SkPaintFilterCanvas.h> 20 #include <stack> 21 #include <vector> 22 23 #include "include/core/SkSurface.h" 24 25 #include "common/rs_macros.h" 26 27 class SkDrawable; 28 namespace OHOS { 29 namespace Rosen { 30 31 class RSB_EXPORT RSPaintFilterCanvas : public SkPaintFilterCanvas { 32 public: 33 RSPaintFilterCanvas(SkCanvas* canvas, float alpha = 1.0f); 34 RSPaintFilterCanvas(SkSurface* skSurface, float alpha = 1.0f); ~RSPaintFilterCanvas()35 ~RSPaintFilterCanvas() override {}; 36 37 void MultiplyAlpha(float alpha); 38 float GetAlpha() const; 39 40 int SaveAlpha(); 41 void RestoreAlpha(); 42 void RestoreAlphaToCount(int count); 43 44 std::pair<int, int> SaveCanvasAndAlpha(); 45 void RestoreCanvasAndAlpha(std::pair<int, int>& count); 46 47 SkSurface* GetSurface() const; 48 SetHighContrast(bool enabled)49 void SetHighContrast(bool enabled) 50 { 51 isHighContrastEnabled_ = enabled; 52 } isHighContrastEnabled()53 bool isHighContrastEnabled() const 54 { 55 return isHighContrastEnabled_; 56 } 57 SetCacheEnabled(bool enabled)58 void SetCacheEnabled(bool enabled) 59 { 60 isCacheEnabled_ = enabled; 61 } isCacheEnabled()62 bool isCacheEnabled() const 63 { 64 return isCacheEnabled_; 65 } 66 SetVisibleRect(SkRect visibleRect)67 void SetVisibleRect(SkRect visibleRect) 68 { 69 visibleRect_ = visibleRect; 70 } 71 GetVisibleRect()72 SkRect GetVisibleRect() const 73 { 74 return visibleRect_; 75 } 76 77 protected: 78 bool onFilter(SkPaint& paint) const override; 79 void onDrawPicture(const SkPicture* picture, const SkMatrix* matrix, const SkPaint* paint) override; 80 81 private: 82 SkSurface* skSurface_ = nullptr; 83 std::stack<float> alphaStack_; 84 std::atomic_bool isHighContrastEnabled_ { false }; 85 bool isCacheEnabled_ { false }; 86 SkRect visibleRect_ = SkRect::MakeEmpty(); 87 }; 88 89 } // namespace Rosen 90 } // namespace OHOS 91 #endif // RENDER_SERVICE_CLIENT_CORE_PIPELINE_RS_PAINT_FILTER_CANVAS_H 92