1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 * 8 */ 9 10 #ifndef HelloWorld_DEFINED 11 #define HelloWorld_DEFINED 12 13 #include "SkSurface.h" 14 #include "SkWindow.h" 15 16 class GrContext; 17 struct GrGLInterface; 18 class GrRenderTarget; 19 class SkCanvas; 20 21 class HelloWorldWindow : public SkOSWindow { 22 public: 23 enum DeviceType { 24 kRaster_DeviceType, 25 kGPU_DeviceType, 26 }; 27 HelloWorldWindow(void* hwnd); 28 virtual ~HelloWorldWindow() override; 29 30 // Changes the device type of the object. 31 bool setUpBackend(); 32 getDeviceType()33 DeviceType getDeviceType() const { return fType; } 34 35 protected: createSurface()36 SkSurface* createSurface() override { 37 if (kGPU_DeviceType == fType) { 38 SkSurfaceProps props(INHERITED::getSurfaceProps()); 39 return SkSurface::NewRenderTargetDirect(fRenderTarget, &props); 40 } 41 static const SkImageInfo info = SkImageInfo::MakeN32Premul( 42 SkScalarRoundToInt(this->width()), SkScalarRoundToInt(this->height())); 43 return fSurface = SkSurface::NewRaster(info); 44 } 45 46 void draw(SkCanvas* canvas) override; 47 void drawContents(SkCanvas* canvas); 48 49 void onSizeChange() override; 50 51 private: 52 bool findNextMatch(); // Set example to the first one that matches FLAGS_match. 53 void setTitle(); 54 void setUpRenderTarget(); 55 bool onHandleChar(SkUnichar unichar) override; 56 void tearDownBackend(); 57 58 // draw contents 59 SkScalar fRotationAngle; 60 61 // support framework 62 DeviceType fType; 63 SkSurface* fSurface; 64 GrContext* fContext; 65 GrRenderTarget* fRenderTarget; 66 AttachmentInfo fAttachmentInfo; 67 const GrGLInterface* fInterface; 68 69 typedef SkOSWindow INHERITED; 70 }; 71 72 #endif 73