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. 23 class BlurRoundRectGM : public skiagm::GM { 24 public: 25 BlurRoundRectGM(int width, int height) 26 : fName("blurroundrect"), fWidth(width), fHeight(height) { 27 fName.appendf("-WH-%ix%i-unevenCorners", width, height); 28 } 29 30 SkString onShortName() override { 31 return fName; 32 } 33 34 SkISize onISize() override { 35 return SkISize::Make(fWidth, fHeight); 36 } 37 38 void onOnceBeforeDraw() override { 39 SkVector radii[4]; 40 radii[0].set(SkIntToScalar(30), SkIntToScalar(30)); 41 radii[1].set(SkIntToScalar(10), SkIntToScalar(10)); 42 radii[2].set(SkIntToScalar(30), SkIntToScalar(30)); 43 radii[3].set(SkIntToScalar(10), SkIntToScalar(10)); 44 SkRect r = SkRect::MakeWH(SkIntToScalar(fWidth), SkIntToScalar(fHeight)); 45 fRRect.setRectRadii(r, radii); 46 } 47 48 void onDraw(SkCanvas* canvas) override { 49 SkLayerDrawLooper::Builder looperBuilder; 50 { 51 SkLayerDrawLooper::LayerInfo info; 52 info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit 53 | SkLayerDrawLooper::kColorFilter_Bit; 54 info.fColorMode = SkXfermode::kSrc_Mode; 55 info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0)); 56 info.fPostTranslate = false; 57 SkPaint* paint = looperBuilder.addLayerOnTop(info); 58 SkMaskFilter* maskFilter = SkBlurMaskFilter::Create( 59 kNormal_SkBlurStyle, 60 SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf), 61 SkBlurMaskFilter::kHighQuality_BlurFlag); 62 paint->setMaskFilter(maskFilter)->unref(); 63 SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter( 64 sk_tool_utils::color_to_565(SK_ColorLTGRAY), 65 SkXfermode::kSrcIn_Mode); 66 paint->setColorFilter(colorFilter)->unref(); 67 paint->setColor(sk_tool_utils::color_to_565(SK_ColorGRAY)); 68 } 69 { 70 SkLayerDrawLooper::LayerInfo info; 71 looperBuilder.addLayerOnTop(info); 72 } 73 SkPaint paint; 74 canvas->drawRect(fRRect.rect(), paint); 75 76 paint.setLooper(looperBuilder.detachLooper())->unref(); 77 paint.setColor(SK_ColorCYAN); 78 paint.setAntiAlias(true); 79 80 canvas->drawRRect(fRRect, paint); 81 } 82 83 private: 84 SkString fName; 85 SkRRect fRRect; 86 int fWidth, fHeight; 87 88 typedef skiagm::GM INHERITED; 89 }; 90 91 #include "SkGradientShader.h" 92 /* 93 * Spits out a dummy gradient to test blur with shader on paint 94 */ 95 static SkShader* MakeRadial() { 96 SkPoint pts[2] = { 97 { 0, 0 }, 98 { SkIntToScalar(100), SkIntToScalar(100) } 99 }; 100 SkShader::TileMode tm = SkShader::kClamp_TileMode; 101 const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, }; 102 const SkScalar pos[] = { SK_Scalar1/4, SK_Scalar1*3/4 }; 103 SkMatrix scale; 104 scale.setScale(0.5f, 0.5f); 105 scale.postTranslate(5.f, 5.f); 106 SkPoint center0, center1; 107 center0.set(SkScalarAve(pts[0].fX, pts[1].fX), 108 SkScalarAve(pts[0].fY, pts[1].fY)); 109 center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5), 110 SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4)); 111 return SkGradientShader::CreateTwoPointConical(center1, (pts[1].fX - pts[0].fX) / 7, 112 center0, (pts[1].fX - pts[0].fX) / 2, 113 colors, pos, SK_ARRAY_COUNT(colors), tm, 114 0, &scale); 115 } 116 117 // Simpler blurred RR test cases where all the radii are the same. 118 class SimpleBlurRoundRectGM : public skiagm::GM { 119 public: 120 SimpleBlurRoundRectGM() 121 : fName("simpleblurroundrect") { 122 } 123 124 protected: 125 126 SkString onShortName() override { 127 return fName; 128 } 129 130 SkISize onISize() override { 131 return SkISize::Make(1000, 500); 132 } 133 134 void onDraw(SkCanvas* canvas) override { 135 canvas->scale(1.5f, 1.5f); 136 canvas->translate(50,50); 137 138 const float blurRadii[] = { 1,5,10,20 }; 139 const int cornerRadii[] = { 1,5,10,20 }; 140 const SkRect r = SkRect::MakeWH(SkIntToScalar(25), SkIntToScalar(25)); 141 for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) { 142 SkAutoCanvasRestore autoRestore(canvas, true); 143 canvas->translate(0, (r.height() + SkIntToScalar(50)) * i); 144 for (size_t j = 0; j < SK_ARRAY_COUNT(cornerRadii); ++j) { 145 for (int k = 0; k <= 1; k++) { 146 SkMaskFilter* filter = SkBlurMaskFilter::Create( 147 kNormal_SkBlurStyle, 148 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])), 149 SkBlurMaskFilter::kHighQuality_BlurFlag); 150 SkPaint paint; 151 paint.setColor(SK_ColorBLACK); 152 paint.setMaskFilter(filter)->unref(); 153 154 bool useRadial = SkToBool(k); 155 if (useRadial) { 156 paint.setShader(MakeRadial())->unref(); 157 } 158 159 SkRRect rrect; 160 rrect.setRectXY(r, SkIntToScalar(cornerRadii[j]), 161 SkIntToScalar(cornerRadii[j])); 162 canvas->drawRRect(rrect, paint); 163 canvas->translate(r.width() + SkIntToScalar(50), 0); 164 } 165 } 166 } 167 } 168 private: 169 const SkString fName; 170 171 typedef skiagm::GM INHERITED; 172 }; 173 174 // Create one with dimensions/rounded corners based on the skp 175 // 176 // TODO(scroggo): Disabled in an attempt to rememdy 177 // https://code.google.com/p/skia/issues/detail?id=1801 ('Win7 Test bots all failing GenerateGMs: 178 // ran wrong number of tests') 179 //DEF_GM(return new BlurRoundRectGM(600, 5514, 6);) 180 181 // Rounded rect with two opposite corners with large radii, the other two 182 // small. 183 DEF_GM(return new BlurRoundRectGM(100, 100);) 184 185 DEF_GM(return new SimpleBlurRoundRectGM();) 186
