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
40    SkString onShortName() override {
41        return fName;
42    }
43
44    SkISize onISize() override {
45        return SkISize::Make(WIDTH, HEIGHT);
46    }
47
48    void onDraw(SkCanvas* canvas) override {
49        const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas);
50        const int testStringCount = SK_ARRAY_COUNT(kTestStrings);
51        SkScalar dx = WIDTH / sigmaCount;
52        SkScalar dy = HEIGHT / sigmaCount;
53        const SkScalar textSize = 12;
54
55        for (int x = 0; x < sigmaCount; x++) {
56            SkScalar sigmaX = kBlurSigmas[x];
57            for (int y = 0; y < sigmaCount; y++) {
58                SkScalar sigmaY = kBlurSigmas[y];
59
60                SkPaint paint;
61                SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(sigmaX, sigmaY));
62                paint.setImageFilter(blur);
63                canvas->saveLayer(nullptr, &paint);
64
65                SkRandom rand;
66                SkPaint textPaint;
67                textPaint.setAntiAlias(false);
68                textPaint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));
69                sk_tool_utils::set_portable_typeface(&textPaint);
70                textPaint.setTextSize(textSize);
71
72                for (int i = 0; i < testStringCount; i++) {
73                    canvas->drawText(kTestStrings[i],
74                                     strlen(kTestStrings[i]),
75                                     SkIntToScalar(x * dx),
76                                     SkIntToScalar(y * dy + textSize * i + textSize),
77                                     textPaint);
78                }
79                canvas->restore();
80            }
81        }
82    }
83
84private:
85    SkString fName;
86
87    typedef GM INHERITED;
88};
89
90//////////////////////////////////////////////////////////////////////////////
91
92static GM* MyFactory(void*) { return new BlurImageFilter; }
93static GMRegistry reg(MyFactory);
94
95}
96