1/*
2* Copyright 2014 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 "SkPaint.h"
13#include "SkString.h"
14
15class BlurCirclesGM : public skiagm::GM {
16public:
17    BlurCirclesGM()
18        : fName("blurcircles") {
19    }
20
21protected:
22    virtual uint32_t onGetFlags() const SK_OVERRIDE {
23        return kSkipTiled_Flag;
24    }
25
26    virtual SkString onShortName() SK_OVERRIDE {
27        return fName;
28    }
29
30    virtual SkISize onISize() SK_OVERRIDE {
31        return SkISize::Make(950, 950);
32    }
33
34    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
35        canvas->scale(1.5f, 1.5f);
36        canvas->translate(50,50);
37
38        const float blurRadii[] = { 1,5,10,20 };
39        const int circleRadii[] = { 5,10,25,50 };
40        for (size_t i = 0; i < SK_ARRAY_COUNT(blurRadii); ++i) {
41            SkAutoCanvasRestore autoRestore(canvas, true);
42            canvas->translate(0, SkIntToScalar(150*i));
43            for (size_t j = 0; j < SK_ARRAY_COUNT(circleRadii); ++j) {
44                SkMaskFilter* filter = SkBlurMaskFilter::Create(
45                    kNormal_SkBlurStyle,
46                    SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(blurRadii[i])),
47                    SkBlurMaskFilter::kHighQuality_BlurFlag);
48                SkPaint paint;
49                paint.setColor(SK_ColorBLACK);
50                paint.setMaskFilter(filter)->unref();
51
52                canvas->drawCircle(SkIntToScalar(50),SkIntToScalar(50),SkIntToScalar(circleRadii[j]),paint);
53                canvas->translate(SkIntToScalar(150), 0);
54            }
55        }
56    }
57private:
58    const SkString  fName;
59
60    typedef         skiagm::GM INHERITED;
61};
62
63DEF_GM(return new BlurCirclesGM();)
64