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