blurroundrect.cpp revision ef470f185f0dcd94943d0c470ddf8cc109f30325 
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", width,  height);
36        SkVector radii[4];
37        radii[0].set(SkIntToScalar(30), SkIntToScalar(30));
38        radii[1].set(SkIntToScalar(10), SkIntToScalar(10));
39        radii[2].set(SkIntToScalar(30), SkIntToScalar(30));
40        radii[3].set(SkIntToScalar(10), SkIntToScalar(10));
41        SkRect r = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
42        fRRect.setRectRadii(r, radii);
43    }
44
45    virtual uint32_t onGetFlags() const SK_OVERRIDE {
46        return kSkipTiled_Flag;
47    }
48
49    virtual SkString onShortName() SK_OVERRIDE {
50        return fName;
51    }
52
53    virtual SkISize onISize() SK_OVERRIDE {
54        return SkISize::Make(SkScalarCeilToInt(fRRect.rect().width()),
55                             SkScalarCeilToInt(fRRect.rect().height()));
56    }
57
58    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
59        SkLayerDrawLooper::Builder looperBuilder;
60        {
61            SkLayerDrawLooper::LayerInfo info;
62            info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit
63                              | SkLayerDrawLooper::kColorFilter_Bit;
64            info.fColorMode = SkXfermode::kSrc_Mode;
65            info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
66            info.fPostTranslate = false;
67            SkPaint* paint = looperBuilder.addLayerOnTop(info);
68            SkMaskFilter* maskFilter = SkBlurMaskFilter::Create(
69                    kNormal_SkBlurStyle,
70                    SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf),
71                    SkBlurMaskFilter::kHighQuality_BlurFlag);
72            paint->setMaskFilter(maskFilter)->unref();
73            SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter(SK_ColorLTGRAY,
74                    SkXfermode::kSrcIn_Mode);
75            paint->setColorFilter(colorFilter)->unref();
76            paint->setColor(SK_ColorGRAY);
77        }
78        {
79            SkLayerDrawLooper::LayerInfo info;
80            looperBuilder.addLayerOnTop(info);
81        }
82        SkPaint paint;
83        canvas->drawRect(fRRect.rect(), paint);
84
85        paint.setLooper(looperBuilder.detachLooper())->unref();
86        paint.setColor(SK_ColorCYAN);
87        paint.setAntiAlias(true);
88
89        canvas->drawRRect(fRRect, paint);
90    }
91
92private:
93    SkString        fName;
94    SkRRect         fRRect;
95
96    typedef skiagm::GM INHERITED;
97};
98
99// Simpler blurred RR test cases where all the radii are the same.
100class SimpleBlurRoundRectGM : public skiagm::GM {
101public:
102    SimpleBlurRoundRectGM()
103        : fName("simpleblurroundrect") {
104    }
105
106protected:
107    virtual uint32_t onGetFlags() const SK_OVERRIDE {
108        return kSkipTiled_Flag;
109    }
110
111    virtual SkString onShortName() SK_OVERRIDE {
112        return fName;
113    }
114
115    virtual SkISize onISize() SK_OVERRIDE {
116        return SkISize::Make(950, 950);
117    }
118
119    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
120        canvas->scale(1.5f, 1.5f);
121        canvas->translate(50,50);
122
123        const float blurRadii[] = { 1,5,10,20 };
124        const int cornerRadii[] = { 1,5,10,20 };
125        const SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
126        for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) {
127            SkAutoCanvasRestore autoRestore(canvas, true);
128            canvas->translate(0, (r.height() + SkIntToScalar(50)) * i);
129            for (size_t j = 0; j < SK_ARRAY_COUNT(cornerRadii); ++j) {
130                SkMaskFilter* filter = SkBlurMaskFilter::Create(
131                    kNormal_SkBlurStyle,
132                    SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])),
133                    SkBlurMaskFilter::kHighQuality_BlurFlag);
134                SkPaint paint;
135                paint.setColor(SK_ColorBLACK);
136                paint.setMaskFilter(filter)->unref();
137
138                SkRRect rrect;
139                rrect.setRectXY(r, SkIntToScalar(cornerRadii[j]), SkIntToScalar(cornerRadii[j]));
140                canvas->drawRRect(rrect, paint);
141                canvas->translate(r.width() + SkIntToScalar(50), 0);
142            }
143        }
144    }
145private:
146    const SkString  fName;
147
148    typedef         skiagm::GM INHERITED;
149};
150
151// Create one with dimensions/rounded corners based on the skp
152//
153// TODO(scroggo): Disabled in an attempt to rememdy
154// https://code.google.com/p/skia/issues/detail?id=1801 ('Win7 Test bots all failing GenerateGMs:
155// ran wrong number of tests')
156//DEF_GM(return new BlurRoundRectGM(600, 5514, 6);)
157
158// Rounded rect with two opposite corners with large radii, the other two
159// small.
160DEF_GM(return new BlurRoundRectGM(100, 100);)
161
162DEF_GM(return new SimpleBlurRoundRectGM();)
163