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 SkString onShortName() SK_OVERRIDE {
46        return fName;
47    }
48
49    virtual SkISize onISize() SK_OVERRIDE {
50        return SkISize::Make(SkScalarCeilToInt(fRRect.rect().width()),
51                             SkScalarCeilToInt(fRRect.rect().height()));
52    }
53
54    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
55        SkLayerDrawLooper::Builder looperBuilder;
56        {
57            SkLayerDrawLooper::LayerInfo info;
58            info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit
59                              | SkLayerDrawLooper::kColorFilter_Bit;
60            info.fColorMode = SkXfermode::kSrc_Mode;
61            info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
62            info.fPostTranslate = false;
63            SkPaint* paint = looperBuilder.addLayerOnTop(info);
64            SkMaskFilter* maskFilter = SkBlurMaskFilter::Create(
65                    kNormal_SkBlurStyle,
66                    SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf),
67                    SkBlurMaskFilter::kHighQuality_BlurFlag);
68            paint->setMaskFilter(maskFilter)->unref();
69            SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter(SK_ColorLTGRAY,
70                    SkXfermode::kSrcIn_Mode);
71            paint->setColorFilter(colorFilter)->unref();
72            paint->setColor(SK_ColorGRAY);
73        }
74        {
75            SkLayerDrawLooper::LayerInfo info;
76            looperBuilder.addLayerOnTop(info);
77        }
78        SkPaint paint;
79        canvas->drawRect(fRRect.rect(), paint);
80
81        paint.setLooper(looperBuilder.detachLooper())->unref();
82        paint.setColor(SK_ColorCYAN);
83        paint.setAntiAlias(true);
84
85        canvas->drawRRect(fRRect, paint);
86    }
87
88private:
89    SkString        fName;
90    SkRRect         fRRect;
91
92    typedef skiagm::GM INHERITED;
93};
94
95// Simpler blurred RR test cases where all the radii are the same.
96class SimpleBlurRoundRectGM : public skiagm::GM {
97public:
98    SimpleBlurRoundRectGM()
99        : fName("simpleblurroundrect") {
100    }
101
102protected:
103    virtual SkString onShortName() SK_OVERRIDE {
104        return fName;
105    }
106
107    virtual SkISize onISize() SK_OVERRIDE {
108        return SkISize::Make(950, 950);
109    }
110
111    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
112        canvas->scale(1.5f, 1.5f);
113        canvas->translate(50,50);
114
115        const float blurRadii[] = { 1,5,10,20 };
116        const int cornerRadii[] = { 1,5,10,20 };
117        const SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
118        for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) {
119            SkAutoCanvasRestore autoRestore(canvas, true);
120            canvas->translate(0, (r.height() + SkIntToScalar(50)) * i);
121            for (size_t j = 0; j < SK_ARRAY_COUNT(cornerRadii); ++j) {
122                SkMaskFilter* filter = SkBlurMaskFilter::Create(
123                    kNormal_SkBlurStyle,
124                    SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])),
125                    SkBlurMaskFilter::kHighQuality_BlurFlag);
126                SkPaint paint;
127                paint.setColor(SK_ColorBLACK);
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(50), 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