1#include "SampleCode.h" 2#include "SkView.h" 3#include "SkCanvas.h" 4#include "SkGraphics.h" 5#include "SkRandom.h" 6#include "SkLayerDrawLooper.h" 7#include "SkBlurMaskFilter.h" 8 9#define WIDTH 200 10#define HEIGHT 200 11 12class LooperView : public SampleView { 13public: 14 15 SkLayerDrawLooper* fLooper; 16 17 LooperView() { 18 static const struct { 19 SkColor fColor; 20 SkPaint::Style fStyle; 21 SkScalar fWidth; 22 SkScalar fOffset; 23 int fBlur; 24 } gParams[] = { 25 { SK_ColorWHITE, SkPaint::kStroke_Style, SkIntToScalar(1)*3/4, 0, 0 }, 26 { SK_ColorRED, SkPaint::kStroke_Style, SkIntToScalar(4), 0, 0 }, 27 { SK_ColorBLUE, SkPaint::kFill_Style, 0, 0, 0 }, 28 { 0x88000000, SkPaint::kFill_Style, 0, SkIntToScalar(10), 3 } 29 }; 30 31 fLooper = new SkLayerDrawLooper; 32 33 SkLayerDrawLooper::LayerInfo info; 34 info.fFlagsMask = SkPaint::kAntiAlias_Flag; 35 info.fPaintBits = SkLayerDrawLooper::kStyle_Bit | SkLayerDrawLooper::kMaskFilter_Bit; 36 info.fColorMode = SkXfermode::kSrc_Mode; 37 38 for (size_t i = 0; i < SK_ARRAY_COUNT(gParams); i++) { 39 info.fOffset.set(gParams[i].fOffset, gParams[i].fOffset); 40 SkPaint* paint = fLooper->addLayer(info); 41 paint->setAntiAlias(true); 42 paint->setColor(gParams[i].fColor); 43 paint->setStyle(gParams[i].fStyle); 44 paint->setStrokeWidth(gParams[i].fWidth); 45 if (gParams[i].fBlur > 0) { 46 SkMaskFilter* mf = SkBlurMaskFilter::Create(SkIntToScalar(gParams[i].fBlur), 47 SkBlurMaskFilter::kNormal_BlurStyle); 48 paint->setMaskFilter(mf)->unref(); 49 } 50 } 51 52 this->setBGColor(0xFFDDDDDD); 53 } 54 55 virtual ~LooperView() { 56 SkSafeUnref(fLooper); 57 } 58 59protected: 60 // overrides from SkEventSink 61 virtual bool onQuery(SkEvent* evt) { 62 if (SampleCode::TitleQ(*evt)) { 63 SampleCode::TitleR(evt, "DrawLooper"); 64 return true; 65 } 66 return this->INHERITED::onQuery(evt); 67 } 68 69 virtual void onDrawContent(SkCanvas* canvas) { 70 SkPaint paint; 71 paint.setTextSize(SkIntToScalar(72)); 72 paint.setLooper(fLooper); 73 74 canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50), 75 SkIntToScalar(30), paint); 76 77 canvas->drawRectCoords(SkIntToScalar(150), SkIntToScalar(50), 78 SkIntToScalar(200), SkIntToScalar(100), paint); 79 80 canvas->drawText("Looper", 6, SkIntToScalar(230), SkIntToScalar(100), 81 paint); 82 } 83 84private: 85 typedef SampleView INHERITED; 86}; 87 88////////////////////////////////////////////////////////////////////////////// 89 90static SkView* MyFactory() { return new LooperView; } 91static SkViewRegister reg(MyFactory); 92 93