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 23 SkString onShortName() override { 24 return fName; 25 } 26 27 SkISize onISize() override { 28 return SkISize::Make(950, 950); 29 } 30 31 void onDraw(SkCanvas* canvas) override { 32 canvas->scale(1.5f, 1.5f); 33 canvas->translate(50,50); 34 35 const float blurRadii[] = { 1,5,10,20 }; 36 const int circleRadii[] = { 5,10,25,50 }; 37 for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) { 38 SkAutoCanvasRestore autoRestore(canvas, true); 39 canvas->translate(0, SkIntToScalar(150*i)); 40 for (size_t j = 0; j < SK_ARRAY_COUNT(circleRadii); ++j) { 41 SkMaskFilter* filter = SkBlurMaskFilter::Create( 42 kNormal_SkBlurStyle, 43 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])), 44 SkBlurMaskFilter::kHighQuality_BlurFlag); 45 SkPaint paint; 46 paint.setColor(SK_ColorBLACK); 47 paint.setMaskFilter(filter)->unref(); 48 49 canvas->drawCircle(SkIntToScalar(50),SkIntToScalar(50),SkIntToScalar(circleRadii[j]),paint); 50 canvas->translate(SkIntToScalar(150), 0); 51 } 52 } 53 } 54private: 55 const SkString fName; 56 57 typedef skiagm::GM INHERITED; 58}; 59 60DEF_GM(return new BlurCirclesGM();) 61