1/* 2* Copyright 2014 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#include "gm.h" 9#include "SkBlurMask.h" 10#include "SkBlurMaskFilter.h" 11#include "SkCanvas.h" 12#include "SkPaint.h" 13#include "SkString.h" 14 15class BlurCirclesGM : public skiagm::GM { 16public: 17 BlurCirclesGM() 18 : fName("blurcircles") { 19 } 20 21protected: 22 virtual uint32_t onGetFlags() const SK_OVERRIDE { 23 return kSkipTiled_Flag; 24 } 25 26 virtual SkString onShortName() SK_OVERRIDE { 27 return fName; 28 } 29 30 virtual SkISize onISize() SK_OVERRIDE { 31 return SkISize::Make(950, 950); 32 } 33 34 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 35 canvas->scale(1.5f, 1.5f); 36 canvas->translate(50,50); 37 38 const float blurRadii[] = { 1,5,10,20 }; 39 const int circleRadii[] = { 5,10,25,50 }; 40 for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) { 41 SkAutoCanvasRestore autoRestore(canvas, true); 42 canvas->translate(0, SkIntToScalar(150*i)); 43 for (size_t j = 0; j < SK_ARRAY_COUNT(circleRadii); ++j) { 44 SkMaskFilter* filter = SkBlurMaskFilter::Create( 45 kNormal_SkBlurStyle, 46 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])), 47 SkBlurMaskFilter::kHighQuality_BlurFlag); 48 SkPaint paint; 49 paint.setColor(SK_ColorBLACK); 50 paint.setMaskFilter(filter)->unref(); 51 52 canvas->drawCircle(SkIntToScalar(50),SkIntToScalar(50),SkIntToScalar(circleRadii[j]),paint); 53 canvas->translate(SkIntToScalar(150), 0); 54 } 55 } 56 } 57private: 58 const SkString fName; 59 60 typedef skiagm::GM INHERITED; 61}; 62 63DEF_GM(return new BlurCirclesGM();) 64