1 /* 2 * Copyright 2016 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 #ifndef WindowContext_DEFINED 8 #define WindowContext_DEFINED 9 10 #include "include/core/SkRefCnt.h" 11 #include "include/core/SkSurfaceProps.h" 12 #include "include/gpu/GrContext.h" 13 #include "include/gpu/GrTypes.h" 14 #include "tools/sk_app/DisplayParams.h" 15 16 class SkSurface; 17 class GrRenderTarget; 18 19 namespace sk_app { 20 21 class WindowContext { 22 public: WindowContext(const DisplayParams & params)23 WindowContext(const DisplayParams& params) 24 : fContext(nullptr) 25 , fDisplayParams(params) 26 , fSampleCount(1) 27 , fStencilBits(0) {} 28 ~WindowContext()29 virtual ~WindowContext() {} 30 31 virtual sk_sp<SkSurface> getBackbufferSurface() = 0; 32 33 virtual void swapBuffers() = 0; 34 35 virtual bool isValid() = 0; 36 37 virtual void resize(int w, int h) = 0; 38 getDisplayParams()39 const DisplayParams& getDisplayParams() { return fDisplayParams; } 40 virtual void setDisplayParams(const DisplayParams& params) = 0; 41 getGrContext()42 GrContext* getGrContext() const { return fContext.get(); } 43 width()44 int width() const { return fWidth; } height()45 int height() const { return fHeight; } sampleCount()46 int sampleCount() const { return fSampleCount; } stencilBits()47 int stencilBits() const { return fStencilBits; } 48 49 protected: isGpuContext()50 virtual bool isGpuContext() { return true; } 51 52 sk_sp<GrContext> fContext; 53 54 int fWidth; 55 int fHeight; 56 DisplayParams fDisplayParams; 57 58 // parameters obtained from the native window 59 // Note that the platform .cpp file is responsible for 60 // initializing fSampleCount and fStencilBits! 61 int fSampleCount; 62 int fStencilBits; 63 }; 64 65 } // namespace sk_app 66 67 #endif 68