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 "sk_tool_utils.h"
10 #include "SkBlurMask.h"
11 #include "SkBlurMaskFilter.h"
12 #include "SkCanvas.h"
13 #include "SkColorFilter.h"
14 #include "SkLayerDrawLooper.h"
15 #include "SkPaint.h"
16 #include "SkPath.h"
17 #include "SkPoint.h"
18 #include "SkRect.h"
19 #include "SkRRect.h"
20 #include "SkString.h"
21
22 // This GM mimics a blurred RR seen in the wild.
23 class BlurRoundRectGM : public skiagm::GM {
24 public:
BlurRoundRectGM(int width,int height)25 BlurRoundRectGM(int width, int height)
26 : fName("blurroundrect"), fWidth(width), fHeight(height) {
27 fName.appendf("-WH-%ix%i-unevenCorners", width, height);
28 }
29
onShortName()30 SkString onShortName() override {
31 return fName;
32 }
33
onISize()34 SkISize onISize() override {
35 return SkISize::Make(fWidth, fHeight);
36 }
37
onOnceBeforeDraw()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
onDraw(SkCanvas * canvas)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 = SkBlendMode::kSrc;
55 info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
56 info.fPostTranslate = false;
57 SkPaint* paint = looperBuilder.addLayerOnTop(info);
58 paint->setMaskFilter(SkBlurMaskFilter::Make(
59 kNormal_SkBlurStyle,
60 SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf),
61 SkBlurMaskFilter::kHighQuality_BlurFlag));
62 paint->setColorFilter(SkColorFilter::MakeModeFilter(
63 sk_tool_utils::color_to_565(SK_ColorLTGRAY),
64 SkBlendMode::kSrcIn));
65 paint->setColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
66 }
67 {
68 SkLayerDrawLooper::LayerInfo info;
69 looperBuilder.addLayerOnTop(info);
70 }
71 SkPaint paint;
72 canvas->drawRect(fRRect.rect(), paint);
73
74 paint.setLooper(looperBuilder.detach());
75 paint.setColor(SK_ColorCYAN);
76 paint.setAntiAlias(true);
77
78 canvas->drawRRect(fRRect, paint);
79 }
80
81 private:
82 SkString fName;
83 SkRRect fRRect;
84 int fWidth, fHeight;
85
86 typedef skiagm::GM INHERITED;
87 };
88
89 #include "SkGradientShader.h"
90 /*
91 * Spits out a dummy gradient to test blur with shader on paint
92 */
MakeRadial()93 static sk_sp<SkShader> MakeRadial() {
94 SkPoint pts[2] = {
95 { 0, 0 },
96 { SkIntToScalar(100), SkIntToScalar(100) }
97 };
98 SkShader::TileMode tm = SkShader::kClamp_TileMode;
99 const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, };
100 const SkScalar pos[] = { SK_Scalar1/4, SK_Scalar1*3/4 };
101 SkMatrix scale;
102 scale.setScale(0.5f, 0.5f);
103 scale.postTranslate(5.f, 5.f);
104 SkPoint center0, center1;
105 center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
106 SkScalarAve(pts[0].fY, pts[1].fY));
107 center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
108 SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
109 return SkGradientShader::MakeTwoPointConical(center1, (pts[1].fX - pts[0].fX) / 7,
110 center0, (pts[1].fX - pts[0].fX) / 2,
111 colors, pos, SK_ARRAY_COUNT(colors), tm,
112 0, &scale);
113 }
114
115 // Simpler blurred RR test cases where all the radii are the same.
116 class SimpleBlurRoundRectGM : public skiagm::GM {
117 public:
SimpleBlurRoundRectGM()118 SimpleBlurRoundRectGM()
119 : fName("simpleblurroundrect") {
120 }
121
122 protected:
123
onShortName()124 SkString onShortName() override {
125 return fName;
126 }
127
onISize()128 SkISize onISize() override {
129 return SkISize::Make(1000, 500);
130 }
131
onDraw(SkCanvas * canvas)132 void onDraw(SkCanvas* canvas) override {
133 canvas->scale(1.5f, 1.5f);
134 canvas->translate(50,50);
135
136 const float blurRadii[] = { 1,5,10,20 };
137 const int cornerRadii[] = { 1,5,10,20 };
138 const SkRect r = SkRect::MakeWH(SkIntToScalar(25), SkIntToScalar(25));
139 for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) {
140 SkAutoCanvasRestore autoRestore(canvas, true);
141 canvas->translate(0, (r.height() + SkIntToScalar(50)) * i);
142 for (size_t j = 0; j < SK_ARRAY_COUNT(cornerRadii); ++j) {
143 for (int k = 0; k <= 1; k++) {
144 SkPaint paint;
145 paint.setColor(SK_ColorBLACK);
146 paint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
147 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])),
148 SkBlurMaskFilter::kHighQuality_BlurFlag));
149
150 bool useRadial = SkToBool(k);
151 if (useRadial) {
152 paint.setShader(MakeRadial());
153 }
154
155 SkRRect rrect;
156 rrect.setRectXY(r, SkIntToScalar(cornerRadii[j]),
157 SkIntToScalar(cornerRadii[j]));
158 canvas->drawRRect(rrect, paint);
159 canvas->translate(r.width() + SkIntToScalar(50), 0);
160 }
161 }
162 }
163 }
164 private:
165 const SkString fName;
166
167 typedef skiagm::GM INHERITED;
168 };
169
170 // Create one with dimensions/rounded corners based on the skp
171 //
172 // TODO(scroggo): Disabled in an attempt to rememdy
173 // https://code.google.com/p/skia/issues/detail?id=1801 ('Win7 Test bots all failing GenerateGMs:
174 // ran wrong number of tests')
175 //DEF_GM(return new BlurRoundRectGM(600, 5514, 6);)
176
177 // Rounded rect with two opposite corners with large radii, the other two
178 // small.
179 DEF_GM(return new BlurRoundRectGM(100, 100);)
180
181 DEF_GM(return new SimpleBlurRoundRectGM();)
182