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 "SkImageFilter.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
26    SkString onShortName() override {
27        return SkString("imageresizetiled");
28    }
29
30    SkISize onISize() override {
31        return SkISize::Make(WIDTH, HEIGHT);
32    }
33
34    void onDraw(SkCanvas* canvas) override {
35        SkPaint paint;
36        SkMatrix matrix;
37        matrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
38        SkAutoTUnref<SkImageFilter> imageFilter(
39            SkImageFilter::CreateMatrixFilter(matrix, kNone_SkFilterQuality));
40        paint.setImageFilter(imageFilter.get());
41        const SkScalar tile_size = SkIntToScalar(100);
42        SkRect bounds;
43        canvas->getClipBounds(&bounds);
44        for (SkScalar y = 0; y < HEIGHT; y += tile_size) {
45            for (SkScalar x = 0; x < WIDTH; x += tile_size) {
46                canvas->save();
47                canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
48                canvas->scale(SkScalarInvert(RESIZE_FACTOR),
49                              SkScalarInvert(RESIZE_FACTOR));
50                canvas->saveLayer(NULL, &paint);
51                const char* str[] = {
52                    "The quick",
53                    "brown fox",
54                    "jumped over",
55                    "the lazy dog.",
56                };
57                SkPaint textPaint;
58                textPaint.setAntiAlias(true);
59                sk_tool_utils::set_portable_typeface(&textPaint);
60                textPaint.setTextSize(SkIntToScalar(100));
61                int posY = 0;
62                for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
63                    posY += 100;
64                    canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
65                                     SkIntToScalar(posY), textPaint);
66                }
67                canvas->restore();
68                canvas->restore();
69            }
70        }
71    }
72
73private:
74    typedef GM INHERITED;
75};
76
77//////////////////////////////////////////////////////////////////////////////
78
79DEF_GM(return new ImageResizeTiledGM(); )
80
81}
82