1/*
2 * Copyright 2012 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 "SkMagnifierImageFilter.h"
10#include "SkRandom.h"
11
12#define WIDTH 500
13#define HEIGHT 500
14
15namespace skiagm {
16
17class ImageMagnifierGM : public GM {
18public:
19    ImageMagnifierGM() {
20        this->setBGColor(0xFF000000);
21    }
22
23protected:
24
25    SkString onShortName() override {
26        return SkString("imagemagnifier");
27    }
28
29    SkISize onISize() override {
30        return SkISize::Make(WIDTH, HEIGHT);
31    }
32
33    void onDraw(SkCanvas* canvas) override {
34        SkPaint filterPaint;
35        filterPaint.setImageFilter(
36            SkMagnifierImageFilter::Create(
37                SkRect::MakeXYWH(SkIntToScalar(100), SkIntToScalar(100),
38                                 SkIntToScalar(WIDTH / 2),
39                                 SkIntToScalar(HEIGHT / 2)),
40                100))->unref();
41        canvas->saveLayer(NULL, &filterPaint);
42        const char* str = "The quick brown fox jumped over the lazy dog.";
43        SkRandom rand;
44        for (int i = 0; i < 25; ++i) {
45            int x = rand.nextULessThan(WIDTH);
46            int y = rand.nextULessThan(HEIGHT);
47            SkPaint paint;
48            sk_tool_utils::set_portable_typeface(&paint);
49            paint.setColor(rand.nextBits(24) | 0xFF000000);
50            paint.setTextSize(rand.nextRangeScalar(0, 300));
51            paint.setAntiAlias(true);
52            canvas->drawText(str, strlen(str), SkIntToScalar(x),
53                             SkIntToScalar(y), paint);
54        }
55        canvas->restore();
56    }
57
58private:
59    typedef GM INHERITED;
60};
61
62//////////////////////////////////////////////////////////////////////////////
63
64static GM* MyFactory(void*) { return new ImageMagnifierGM; }
65static GMRegistry reg(MyFactory);
66
67}
68