1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkAndroidFrameworkUtils_DEFINED 9 #define SkAndroidFrameworkUtils_DEFINED 10 11 #include "include/core/SkRefCnt.h" 12 #include "include/core/SkTypes.h" 13 14 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK 15 16 class SkCanvas; 17 struct SkRect; 18 class SkSurface; 19 20 /** 21 * SkAndroidFrameworkUtils expose private APIs used only by Android framework. 22 */ 23 class SkAndroidFrameworkUtils { 24 public: 25 26 #if SK_SUPPORT_GPU 27 /** 28 * clipWithStencil draws the current clip into a stencil buffer with reference value and mask 29 * set to 0x1. This function works only on a GPU canvas. 30 * 31 * @param canvas A GPU canvas that has a non-empty clip. 32 * 33 * @return true on success or false if clip is empty or not a GPU canvas. 34 */ 35 static bool clipWithStencil(SkCanvas* canvas); 36 #endif //SK_SUPPORT_GPU 37 38 static void SafetyNetLog(const char*); 39 40 static sk_sp<SkSurface> getSurfaceFromCanvas(SkCanvas* canvas); 41 42 static int SaveBehind(SkCanvas* canvas, const SkRect* subset); 43 44 /** 45 * Unrolls a chain of nested SkPaintFilterCanvas to return the base wrapped canvas. 46 * 47 * @param canvas A SkPaintFilterCanvas or any other SkCanvas subclass. 48 * 49 * @return SkCanvas that was found in the innermost SkPaintFilterCanvas. 50 */ 51 static SkCanvas* getBaseWrappedCanvas(SkCanvas* canvas); 52 }; 53 54 #endif // SK_BUILD_FOR_ANDROID_ANDROID 55 56 #endif // SkAndroidFrameworkUtils_DEFINED 57