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    virtual uint32_t onGetFlags() const SK_OVERRIDE {
25        // Skip tiled drawing until https://code.google.com/p/skia/issues/detail?id=781 is fixed.
26        return this->INHERITED::onGetFlags() | GM::kSkipTiled_Flag;
27    }
28
29    virtual SkString onShortName() SK_OVERRIDE {
30        return SkString("imagemagnifier");
31    }
32
33    virtual SkISize onISize() SK_OVERRIDE {
34        return SkISize::Make(WIDTH, HEIGHT);
35    }
36
37    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
38        SkPaint paint;
39        paint.setImageFilter(
40            SkMagnifierImageFilter::Create(
41                SkRect::MakeXYWH(SkIntToScalar(100), SkIntToScalar(100),
42                                 SkIntToScalar(WIDTH / 2),
43                                 SkIntToScalar(HEIGHT / 2)),
44                100))->unref();
45        canvas->saveLayer(NULL, &paint);
46        paint.setAntiAlias(true);
47        const char* str = "The quick brown fox jumped over the lazy dog.";
48        SkRandom rand;
49        for (int i = 0; i < 25; ++i) {
50            int x = rand.nextULessThan(WIDTH);
51            int y = rand.nextULessThan(HEIGHT);
52            paint.setColor(rand.nextBits(24) | 0xFF000000);
53            paint.setTextSize(rand.nextRangeScalar(0, 300));
54            canvas->drawText(str, strlen(str), SkIntToScalar(x),
55                             SkIntToScalar(y), paint);
56        }
57        canvas->restore();
58    }
59
60private:
61    typedef GM INHERITED;
62};
63
64//////////////////////////////////////////////////////////////////////////////
65
66static GM* MyFactory(void*) { return new ImageMagnifierGM; }
67static GMRegistry reg(MyFactory);
68
69}
70