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
13 namespace skiagm {
14
15 #define W 400
16 #define H 400
17 #define N 100
18
19 constexpr SkScalar SW = SkIntToScalar(W);
20 constexpr SkScalar SH = SkIntToScalar(H);
21
22 class StrokeRectsGM : public GM {
23 public:
StrokeRectsGM()24 StrokeRectsGM() {}
25
26 protected:
27
onShortName()28 SkString onShortName() override {
29 return SkString("strokerects");
30 }
31
onISize()32 SkISize onISize() override {
33 return SkISize::Make(W*2, H*2);
34 }
35
rnd_rect(SkRect * r,SkRandom & rand)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
onDraw(SkCanvas * canvas)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
74 private:
75 typedef GM INHERITED;
76 };
77
78 //////////////////////////////////////////////////////////////////////////////
79
MyFactory(void *)80 static GM* MyFactory(void*) { return new StrokeRectsGM; }
81 static GMRegistry reg(MyFactory);
82
83 }
84