1 /* 2 * Copyright 2011 Skia 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 SampleApp_DEFINED 9 #define SampleApp_DEFINED 10 11 #include "SkOSMenu.h" 12 #include "SkPath.h" 13 #include "SkPicture.h" 14 #include "SkPictureRecorder.h" 15 #include "SkScalar.h" 16 #include "SkTDArray.h" 17 #include "SkTouchGesture.h" 18 #include "SkWindow.h" 19 20 class GrContext; 21 class GrRenderTarget; 22 23 class SkCanvas; 24 class SkData; 25 class SkDeferredCanvas; 26 class SkDocument; 27 class SkEvent; 28 class SkTypeface; 29 class SkViewFactory; 30 31 class SampleWindow : public SkOSWindow { 32 SkTDArray<const SkViewFactory*> fSamples; 33 public: 34 enum DeviceType { 35 kRaster_DeviceType, 36 kPicture_DeviceType, 37 #if SK_SUPPORT_GPU 38 kGPU_DeviceType, 39 #if SK_ANGLE 40 kANGLE_DeviceType, 41 #endif // SK_ANGLE 42 #endif // SK_SUPPORT_GPU 43 kDeferred_DeviceType, 44 kDeviceTypeCnt 45 }; 46 47 static bool IsGpuDeviceType(DeviceType devType) { 48 #if SK_SUPPORT_GPU 49 switch (devType) { 50 case kGPU_DeviceType: 51 #if SK_ANGLE 52 case kANGLE_DeviceType: 53 #endif // SK_ANGLE 54 return true; 55 default: 56 return false; 57 } 58 #endif // SK_SUPPORT_GPU 59 return false; 60 } 61 62 /** 63 * SampleApp ports can subclass this manager class if they want to: 64 * * filter the types of devices supported 65 * * customize plugging of SkBaseDevice objects into an SkCanvas 66 * * customize publishing the results of draw to the OS window 67 * * manage GrContext / GrRenderTarget lifetimes 68 */ 69 class DeviceManager : public SkRefCnt { 70 public: 71 SK_DECLARE_INST_COUNT(DeviceManager) 72 73 virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) = 0; 74 75 virtual void tearDownBackend(SampleWindow* win) = 0; 76 77 // called before drawing. should install correct device 78 // type on the canvas. Will skip drawing if returns false. 79 virtual SkSurface* createSurface(DeviceType dType, SampleWindow* win) = 0; 80 81 // called after drawing, should get the results onto the 82 // screen. 83 virtual void publishCanvas(DeviceType dType, 84 SkCanvas* canvas, 85 SampleWindow* win) = 0; 86 87 // called when window changes size, guaranteed to be called 88 // at least once before first draw (after init) 89 virtual void windowSizeChanged(SampleWindow* win) = 0; 90 91 // return the GrContext backing gpu devices (NULL if not built with GPU support) 92 virtual GrContext* getGrContext() = 0; 93 94 // return the GrRenderTarget backing gpu devices (NULL if not built with GPU support) 95 virtual GrRenderTarget* getGrRenderTarget() = 0; 96 private: 97 typedef SkRefCnt INHERITED; 98 }; 99 100 SampleWindow(void* hwnd, int argc, char** argv, DeviceManager*); 101 virtual ~SampleWindow(); 102 103 SkSurface* createSurface() override { 104 SkSurface* surface = NULL; 105 if (fDevManager) { 106 surface = fDevManager->createSurface(fDeviceType, this); 107 } 108 if (NULL == surface) { 109 surface = this->INHERITED::createSurface(); 110 } 111 return surface; 112 } 113 114 void draw(SkCanvas*) override; 115 116 void setDeviceType(DeviceType type); 117 void toggleRendering(); 118 void toggleSlideshow(); 119 void toggleFPS(); 120 void showOverview(); 121 void toggleDistanceFieldFonts(); 122 123 GrContext* getGrContext() const { return fDevManager->getGrContext(); } 124 125 void setZoomCenter(float x, float y); 126 void changeZoomLevel(float delta); 127 bool nextSample(); 128 bool previousSample(); 129 bool goToSample(int i); 130 SkString getSampleTitle(int i); 131 int sampleCount(); 132 bool handleTouch(int ownerId, float x, float y, 133 SkView::Click::State state); 134 void saveToPdf(); 135 void postInvalDelay(); 136 137 DeviceType getDeviceType() const { return fDeviceType; } 138 139 protected: 140 void onDraw(SkCanvas* canvas) override; 141 bool onHandleKey(SkKey key) override; 142 bool onHandleChar(SkUnichar) override; 143 void onSizeChange() override; 144 145 SkCanvas* beforeChildren(SkCanvas*) override; 146 void afterChildren(SkCanvas*) override; 147 void beforeChild(SkView* child, SkCanvas* canvas) override; 148 void afterChild(SkView* child, SkCanvas* canvas) override; 149 150 bool onEvent(const SkEvent& evt) override; 151 bool onQuery(SkEvent* evt) override; 152 153 virtual bool onDispatchClick(int x, int y, Click::State, void* owner, 154 unsigned modi) override; 155 bool onClick(Click* click) override; 156 virtual Click* onFindClickHandler(SkScalar x, SkScalar y, 157 unsigned modi) override; 158 159 private: 160 class DefaultDeviceManager; 161 162 int fCurrIndex; 163 164 SkPictureRecorder fRecorder; 165 SkAutoTDelete<SkSurface> fDeferredSurface; 166 SkAutoTDelete<SkDeferredCanvas> fDeferredCanvas; 167 SkPath fClipPath; 168 169 SkTouchGesture fGesture; 170 SkScalar fZoomLevel; 171 SkScalar fZoomScale; 172 173 DeviceType fDeviceType; 174 DeviceManager* fDevManager; 175 176 bool fSaveToPdf; 177 SkAutoTUnref<SkDocument> fPDFDocument; 178 179 bool fUseClip; 180 bool fAnimating; 181 bool fRotate; 182 bool fPerspAnim; 183 bool fRequestGrabImage; 184 bool fMeasureFPS; 185 SkMSec fMeasureFPS_Time; 186 SkMSec fMeasureFPS_StartTime; 187 bool fMagnify; 188 int fTilingMode; 189 190 191 SkOSMenu::TriState fPipeState; // Mixed uses a tiled pipe 192 // On uses a normal pipe 193 // Off uses no pipe 194 int fUsePipeMenuItemID; 195 196 // The following are for the 'fatbits' drawing 197 // Latest position of the mouse. 198 int fMouseX, fMouseY; 199 int fFatBitsScale; 200 // Used by the text showing position and color values. 201 SkTypeface* fTypeface; 202 bool fShowZoomer; 203 204 SkOSMenu::TriState fLCDState; 205 SkOSMenu::TriState fAAState; 206 SkOSMenu::TriState fSubpixelState; 207 int fHintingState; 208 int fFilterQualityIndex; 209 unsigned fFlipAxis; 210 211 int fMSAASampleCount; 212 213 int fScrollTestX, fScrollTestY; 214 SkScalar fZoomCenterX, fZoomCenterY; 215 216 //Stores global settings 217 SkOSMenu* fAppMenu; // We pass ownership to SkWindow, when we call addMenu 218 //Stores slide specific settings 219 SkOSMenu* fSlideMenu; // We pass ownership to SkWindow, when we call addMenu 220 221 int fTransitionNext; 222 int fTransitionPrev; 223 224 void loadView(SkView*); 225 void updateTitle(); 226 bool getRawTitle(SkString*); 227 228 bool zoomIn(); 229 bool zoomOut(); 230 void updatePointer(int x, int y); 231 void magnify(SkCanvas* canvas); 232 void showZoomer(SkCanvas* canvas); 233 void updateMatrix(); 234 void postAnimatingEvent(); 235 void installDrawFilter(SkCanvas*); 236 int findByTitle(const char*); 237 void listTitles(); 238 SkSize tileSize() const; 239 bool sendAnimatePulse(); 240 241 typedef SkOSWindow INHERITED; 242 }; 243 244 #endif 245
