1/*
2 * Copyright 2011 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
9
10#include "gm.h"
11#include "SkRandom.h"
12
13namespace skiagm {
14
15#define W   400
16#define H   400
17#define N   100
18
19constexpr SkScalar SW = SkIntToScalar(W);
20constexpr SkScalar SH = SkIntToScalar(H);
21
22class StrokeRectsGM : public GM {
23public:
24    StrokeRectsGM() {}
25
26protected:
27
28    SkString onShortName() override {
29        return SkString("strokerects");
30    }
31
32    SkISize onISize() override {
33        return SkISize::Make(W*2, H*2);
34    }
35
36    static void rnd_rect(SkRect* r, SkRandom& rand) {
37        SkScalar x = rand.nextUScalar1() * W;
38        SkScalar y = rand.nextUScalar1() * H;
39        SkScalar w = rand.nextUScalar1() * (W >> 2);
40        SkScalar h = rand.nextUScalar1() * (H >> 2);
41        SkScalar hoffset = rand.nextSScalar1();
42        SkScalar woffset = rand.nextSScalar1();
43
44        r->set(x, y, x + w, y + h);
45        r->offset(-w/2 + woffset, -h/2 + hoffset);
46    }
47
48    void onDraw(SkCanvas* canvas) override {
49        SkPaint paint;
50        paint.setStyle(SkPaint::kStroke_Style);
51
52        for (int y = 0; y < 2; y++) {
53            paint.setAntiAlias(!!y);
54            for (int x = 0; x < 2; x++) {
55                paint.setStrokeWidth(x * SkIntToScalar(3));
56
57                SkAutoCanvasRestore acr(canvas, true);
58                canvas->translate(SW * x, SH * y);
59                canvas->clipRect(SkRect::MakeLTRB(
60                        SkIntToScalar(2), SkIntToScalar(2)
61                        , SW - SkIntToScalar(2), SH - SkIntToScalar(2)
62                ));
63
64                SkRandom rand;
65                for (int i = 0; i < N; i++) {
66                    SkRect r;
67                    rnd_rect(&r, rand);
68                    canvas->drawRect(r, paint);
69                }
70            }
71        }
72    }
73
74private:
75    typedef GM INHERITED;
76};
77
78//////////////////////////////////////////////////////////////////////////////
79
80static GM* MyFactory(void*) { return new StrokeRectsGM; }
81static GMRegistry reg(MyFactory);
82
83}
84