blurroundrect.cpp revision 4b413c8bb123e42ca4b9c7bfa6bc2167283cb84c
1/* 2* Copyright 2013 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 "SkColorFilter.h" 13#include "SkLayerDrawLooper.h" 14#include "SkPaint.h" 15#include "SkPath.h" 16#include "SkPoint.h" 17#include "SkRect.h" 18#include "SkRRect.h" 19#include "SkString.h" 20#include "SkXfermode.h" 21 22// This GM mimics a blurred RR seen in the wild. 23class BlurRoundRectGM : public skiagm::GM { 24public: 25 BlurRoundRectGM(int width, int height, int radius) 26 : fName("blurroundrect") 27 { 28 SkRect r = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)); 29 fRRect.setRectXY(r, SkIntToScalar(radius), SkIntToScalar(radius)); 30 fName.appendf("-WH[%ix%i]-corner[%i]", width, height, radius); 31 } 32 33 BlurRoundRectGM(int width, int height) 34 : fName("blurroundrect") { 35 fName.appendf("-WH[%ix%i]-unevenCorners", 36 width, height); 37 SkVector radii[4]; 38 radii[0].set(SkIntToScalar(30), SkIntToScalar(30)); 39 radii[1].set(SkIntToScalar(10), SkIntToScalar(10)); 40 radii[2].set(SkIntToScalar(30), SkIntToScalar(30)); 41 radii[3].set(SkIntToScalar(10), SkIntToScalar(10)); 42 SkRect r = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)); 43 fRRect.setRectRadii(r, radii); 44 } 45 46 virtual SkString onShortName() SK_OVERRIDE { 47 return fName; 48 } 49 50 virtual SkISize onISize() SK_OVERRIDE { 51 return SkISize::Make(SkScalarCeilToInt(fRRect.rect().width()), 52 SkScalarCeilToInt(fRRect.rect().height())); 53 } 54 55 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 56 SkLayerDrawLooper* looper = new SkLayerDrawLooper; 57 { 58 SkLayerDrawLooper::LayerInfo info; 59 info.fFlagsMask = 0; 60 info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit 61 | SkLayerDrawLooper::kColorFilter_Bit; 62 info.fColorMode = SkXfermode::kSrc_Mode; 63 info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0)); 64 info.fPostTranslate = false; 65 SkPaint* paint = looper->addLayerOnTop(info); 66 SkMaskFilter* maskFilter = SkBlurMaskFilter::Create( 67 SkBlurMaskFilter::kNormal_BlurStyle, 68 SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf), 69 SkBlurMaskFilter::kHighQuality_BlurFlag); 70 paint->setMaskFilter(maskFilter)->unref(); 71 SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter(SK_ColorLTGRAY, 72 SkXfermode::kSrcIn_Mode); 73 paint->setColorFilter(colorFilter)->unref(); 74 paint->setColor(SK_ColorGRAY); 75 } 76 { 77 SkLayerDrawLooper::LayerInfo info; 78 looper->addLayerOnTop(info); 79 } 80 SkPaint paint; 81 canvas->drawRect(fRRect.rect(), paint); 82 83 paint.setLooper(looper)->unref(); 84 paint.setColor(SK_ColorCYAN); 85 paint.setAntiAlias(true); 86 87 canvas->drawRRect(fRRect, paint); 88 } 89 90private: 91 SkString fName; 92 SkRRect fRRect; 93 94 typedef skiagm::GM INHERITED; 95}; 96 97// Simpler blurred RR test cases where all the radii are the same. 98class SimpleBlurRoundRectGM : public skiagm::GM { 99public: 100 SimpleBlurRoundRectGM() 101 : fName("simpleblurroundrect") { 102 } 103 104protected: 105 virtual SkString onShortName() SK_OVERRIDE { 106 return fName; 107 } 108 109 virtual SkISize onISize() SK_OVERRIDE { 110 return SkISize::Make(750, 750); 111 } 112 113 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 114 canvas->scale(1.5f, 1.5f); 115 116 const int blurRadii[] = { 1, 3, 6, 10 }; 117 const int cornerRadii[] = { 1, 3, 6, 10 }; 118 const SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100)); 119 for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) { 120 SkAutoCanvasRestore autoRestore(canvas, true); 121 canvas->translate(0, (r.height() + SkIntToScalar(20)) * i); 122 for (size_t j = 0; j < SK_ARRAY_COUNT(cornerRadii); ++j) { 123 SkMaskFilter* filter = SkBlurMaskFilter::Create( 124 SkBlurMaskFilter::kNormal_BlurStyle, 125 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i]))); 126 SkPaint paint; 127 paint.setColor(SK_ColorBLUE); 128 paint.setMaskFilter(filter)->unref(); 129 130 SkRRect rrect; 131 rrect.setRectXY(r, SkIntToScalar(cornerRadii[j]), SkIntToScalar(cornerRadii[j])); 132 canvas->drawRRect(rrect, paint); 133 canvas->translate(r.width() + SkIntToScalar(10), 0); 134 } 135 } 136 } 137private: 138 const SkString fName; 139 140 typedef skiagm::GM INHERITED; 141}; 142 143// Create one with dimensions/rounded corners based on the skp 144// 145// TODO(scroggo): Disabled in an attempt to rememdy 146// https://code.google.com/p/skia/issues/detail?id=1801 ('Win7 Test bots all failing GenerateGMs: 147// ran wrong number of tests') 148//DEF_GM(return new BlurRoundRectGM(600, 5514, 6);) 149 150// Rounded rect with two opposite corners with large radii, the other two 151// small. 152DEF_GM(return new BlurRoundRectGM(100, 100);) 153 154DEF_GM(return new SimpleBlurRoundRectGM();) 155