1/*
2 * Copyright 2011 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 "SkBlurImageFilter.h"
10#include "SkRandom.h"
11
12// TODO deprecate imageblur
13
14#define WIDTH 500
15#define HEIGHT 500
16
17static const float kBlurSigmas[] = {
18        0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f };
19
20const char* kTestStrings[] = {
21        "The quick`~",
22        "brown fox[]",
23        "jumped over",
24        "the lazy@#$",
25        "dog.{}!%^&",
26        "*()+=-\\'\"/",
27};
28
29namespace skiagm {
30
31class BlurImageFilter : public GM {
32public:
33    BlurImageFilter() {
34        this->setBGColor(0xFFFFFFFF);
35        fName.printf("imageblur2");
36    }
37
38protected:
39    virtual uint32_t onGetFlags() const SK_OVERRIDE {
40        return kSkipTiled_Flag;
41    }
42
43    virtual SkString onShortName() {
44        return fName;
45    }
46
47    virtual SkISize onISize() {
48        return SkISize::Make(WIDTH, HEIGHT);
49    }
50
51    virtual void onDraw(SkCanvas* canvas) {
52        const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas);
53        const int testStringCount = SK_ARRAY_COUNT(kTestStrings);
54        SkScalar dx = WIDTH / sigmaCount;
55        SkScalar dy = HEIGHT / sigmaCount;
56        const SkScalar textSize = 12;
57
58        for (int x = 0; x < sigmaCount; x++) {
59            SkScalar sigmaX = kBlurSigmas[x];
60            for (int y = 0; y < sigmaCount; y++) {
61                SkScalar sigmaY = kBlurSigmas[y];
62
63                SkPaint paint;
64                paint.setImageFilter(SkBlurImageFilter::Create(sigmaX, sigmaY))->unref();
65                canvas->saveLayer(NULL, &paint);
66
67                SkRandom rand;
68                SkPaint textPaint;
69                textPaint.setAntiAlias(false);
70                textPaint.setColor(rand.nextBits(24) | 0xFF000000);
71                textPaint.setTextSize(textSize);
72
73                for (int i = 0; i < testStringCount; i++) {
74                    canvas->drawText(kTestStrings[i],
75                                     strlen(kTestStrings[i]),
76                                     SkIntToScalar(x * dx),
77                                     SkIntToScalar(y * dy + textSize * i + textSize),
78                                     textPaint);
79                }
80                canvas->restore();
81            }
82        }
83    }
84
85private:
86    SkString fName;
87
88    typedef GM INHERITED;
89};
90
91//////////////////////////////////////////////////////////////////////////////
92
93static GM* MyFactory(void*) { return new BlurImageFilter; }
94static GMRegistry reg(MyFactory);
95
96}
97