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 "sk_tool_utils.h"
10#include "SkBlurImageFilter.h"
11#include "SkRandom.h"
12
13#define WIDTH 640
14#define HEIGHT 480
15
16namespace skiagm {
17
18class ImageBlurTiledGM : public GM {
19public:
20    ImageBlurTiledGM(SkScalar sigmaX, SkScalar sigmaY)
21        : fSigmaX(sigmaX), fSigmaY(sigmaY) {
22    }
23
24protected:
25    SkString onShortName() override {
26        return SkString("imageblurtiled");
27    }
28
29    SkISize onISize() override {
30        return SkISize::Make(WIDTH, HEIGHT);
31    }
32
33    void onDraw(SkCanvas* canvas) override {
34        SkPaint paint;
35        paint.setImageFilter(SkBlurImageFilter::Make(fSigmaX, fSigmaY, nullptr));
36        const SkScalar tileSize = SkIntToScalar(128);
37        SkRect bounds = canvas->getLocalClipBounds();
38        for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tileSize) {
39            for (SkScalar x = bounds.left(); x < bounds.right(); x += tileSize) {
40                canvas->save();
41                canvas->clipRect(SkRect::MakeXYWH(x, y, tileSize, tileSize));
42                canvas->saveLayer(nullptr, &paint);
43                const char* str[] = {
44                    "The quick",
45                    "brown fox",
46                    "jumped over",
47                    "the lazy dog.",
48                };
49                SkPaint textPaint;
50                textPaint.setAntiAlias(true);
51                sk_tool_utils::set_portable_typeface(&textPaint);
52                textPaint.setTextSize(SkIntToScalar(100));
53                int posY = 0;
54                for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
55                    posY += 100;
56                    canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
57                                     SkIntToScalar(posY), textPaint);
58                }
59                canvas->restore();
60                canvas->restore();
61            }
62        }
63    }
64
65private:
66    SkScalar fSigmaX;
67    SkScalar fSigmaY;
68
69    typedef GM INHERITED;
70};
71
72//////////////////////////////////////////////////////////////////////////////
73
74DEF_GM(return new  ImageBlurTiledGM(3.0f, 3.0f);)
75
76}
77