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 "SkMatrixImageFilter.h"
10#include "SkRandom.h"
11
12#define WIDTH 640
13#define HEIGHT 480
14
15#define RESIZE_FACTOR SkIntToScalar(2)
16
17namespace skiagm {
18
19class ImageResizeTiledGM : public GM {
20public:
21    ImageResizeTiledGM() {
22    }
23
24protected:
25    virtual SkString onShortName() SK_OVERRIDE {
26        return SkString("imageresizetiled");
27    }
28
29    virtual SkISize onISize() SK_OVERRIDE {
30        return SkISize::Make(WIDTH, HEIGHT);
31    }
32
33    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
34        SkPaint paint;
35        SkMatrix matrix;
36        matrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
37        SkAutoTUnref<SkImageFilter> imageFilter(
38            SkMatrixImageFilter::Create(matrix, SkPaint::kNone_FilterLevel));
39        paint.setImageFilter(imageFilter.get());
40        const SkScalar tile_size = SkIntToScalar(100);
41        SkRect bounds;
42        canvas->getClipBounds(&bounds);
43        for (SkScalar y = 0; y < HEIGHT; y += tile_size) {
44            for (SkScalar x = 0; x < WIDTH; x += tile_size) {
45                canvas->save();
46                canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
47                canvas->scale(SkScalarInvert(RESIZE_FACTOR),
48                              SkScalarInvert(RESIZE_FACTOR));
49                canvas->saveLayer(NULL, &paint);
50                const char* str[] = {
51                    "The quick",
52                    "brown fox",
53                    "jumped over",
54                    "the lazy dog.",
55                };
56                SkPaint textPaint;
57                textPaint.setAntiAlias(true);
58                textPaint.setTextSize(SkIntToScalar(100));
59                int posY = 0;
60                for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
61                    posY += 100;
62                    canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
63                                     SkIntToScalar(posY), textPaint);
64                }
65                canvas->restore();
66                canvas->restore();
67            }
68        }
69    }
70
71private:
72    typedef GM INHERITED;
73};
74
75//////////////////////////////////////////////////////////////////////////////
76
77DEF_GM(return new ImageResizeTiledGM(); )
78
79}
80