1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10
11 #include "gm.h"
12 #include "SkRandom.h"
13
14 namespace skiagm {
15
16 #define W 400
17 #define H 400
18 #define N 100
19
20 static const SkScalar SW = SkIntToScalar(W);
21 static const SkScalar SH = SkIntToScalar(H);
22
23 class StrokeRectsGM : public GM {
24 public:
StrokeRectsGM()25 StrokeRectsGM() {}
26
27 protected:
28
onShortName()29 SkString onShortName() override {
30 return SkString("strokerects");
31 }
32
onISize()33 SkISize onISize() override {
34 return SkISize::Make(W*2, H*2);
35 }
36
rnd_rect(SkRect * r,SkRandom & rand)37 static void rnd_rect(SkRect* r, SkRandom& rand) {
38 SkScalar x = rand.nextUScalar1() * W;
39 SkScalar y = rand.nextUScalar1() * H;
40 SkScalar w = rand.nextUScalar1() * (W >> 2);
41 SkScalar h = rand.nextUScalar1() * (H >> 2);
42 SkScalar hoffset = rand.nextSScalar1();
43 SkScalar woffset = rand.nextSScalar1();
44
45 r->set(x, y, x + w, y + h);
46 r->offset(-w/2 + woffset, -h/2 + hoffset);
47 }
48
onDraw(SkCanvas * canvas)49 void onDraw(SkCanvas* canvas) override {
50 SkPaint paint;
51 paint.setStyle(SkPaint::kStroke_Style);
52
53 for (int y = 0; y < 2; y++) {
54 paint.setAntiAlias(!!y);
55 for (int x = 0; x < 2; x++) {
56 paint.setStrokeWidth(x * SkIntToScalar(3));
57
58 SkAutoCanvasRestore acr(canvas, true);
59 canvas->translate(SW * x, SH * y);
60 canvas->clipRect(SkRect::MakeLTRB(
61 SkIntToScalar(2), SkIntToScalar(2)
62 , SW - SkIntToScalar(2), SH - SkIntToScalar(2)
63 ));
64
65 SkRandom rand;
66 for (int i = 0; i < N; i++) {
67 SkRect r;
68 rnd_rect(&r, rand);
69 canvas->drawRect(r, paint);
70 }
71 }
72 }
73 }
74
75 private:
76 typedef GM INHERITED;
77 };
78
79 //////////////////////////////////////////////////////////////////////////////
80
MyFactory(void *)81 static GM* MyFactory(void*) { return new StrokeRectsGM; }
82 static GMRegistry reg(MyFactory);
83
84 }
85