1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkRandom.h"
namespace skiagm {
#define W 400
#define H 400
#define N 100
constexpr SkScalar SW = SkIntToScalar(W);
constexpr SkScalar SH = SkIntToScalar(H);
class StrokeRectsGM : public GM {
public:
StrokeRectsGM() {}
protected:
SkString onShortName() override {
return SkString("strokerects");
}
SkISize onISize() override {
return SkISize::Make(W*2, H*2);
}
static void rnd_rect(SkRect* r, SkRandom& rand) {
SkScalar x = rand.nextUScalar1() * W;
SkScalar y = rand.nextUScalar1() * H;
SkScalar w = rand.nextUScalar1() * (W >> 2);
SkScalar h = rand.nextUScalar1() * (H >> 2);
SkScalar hoffset = rand.nextSScalar1();
SkScalar woffset = rand.nextSScalar1();
r->set(x, y, x + w, y + h);
r->offset(-w/2 + woffset, -h/2 + hoffset);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
for (int y = 0; y < 2; y++) {
paint.setAntiAlias(!!y);
for (int x = 0; x < 2; x++) {
paint.setStrokeWidth(x * SkIntToScalar(3));
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SW * x, SH * y);
canvas->clipRect(SkRect::MakeLTRB(
SkIntToScalar(2), SkIntToScalar(2)
, SW - SkIntToScalar(2), SH - SkIntToScalar(2)
));
SkRandom rand;
for (int i = 0; i < N; i++) {
SkRect r;
rnd_rect(&r, rand);
canvas->drawRect(r, paint);
}
}
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new StrokeRectsGM; }
static GMRegistry reg(MyFactory);
}
|
