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Side by Side Diff: gm/strokerects.cpp

Issue 805963002: There can be only one (SkRandom)! (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Rebase Created 6 years ago
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1 1
2 /* 2 /*
3 * Copyright 2011 Google Inc. 3 * Copyright 2011 Google Inc.
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 9
10 10
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30 } 30 }
31 31
32 virtual SkString onShortName() { 32 virtual SkString onShortName() {
33 return SkString("strokerects"); 33 return SkString("strokerects");
34 } 34 }
35 35
36 virtual SkISize onISize() { 36 virtual SkISize onISize() {
37 return SkISize::Make(W*2, H*2); 37 return SkISize::Make(W*2, H*2);
38 } 38 }
39 39
40 static void rnd_rect(SkRect* r, SkLCGRandom& rand) { 40 static void rnd_rect(SkRect* r, SkRandom& rand) {
41 SkScalar x = rand.nextUScalar1() * W; 41 SkScalar x = rand.nextUScalar1() * W;
42 SkScalar y = rand.nextUScalar1() * H; 42 SkScalar y = rand.nextUScalar1() * H;
43 SkScalar w = rand.nextUScalar1() * (W >> 2); 43 SkScalar w = rand.nextUScalar1() * (W >> 2);
44 SkScalar h = rand.nextUScalar1() * (H >> 2); 44 SkScalar h = rand.nextUScalar1() * (H >> 2);
45 SkScalar hoffset = rand.nextSScalar1(); 45 SkScalar hoffset = rand.nextSScalar1();
46 SkScalar woffset = rand.nextSScalar1(); 46 SkScalar woffset = rand.nextSScalar1();
47 47
48 r->set(x, y, x + w, y + h); 48 r->set(x, y, x + w, y + h);
49 r->offset(-w/2 + woffset, -h/2 + hoffset); 49 r->offset(-w/2 + woffset, -h/2 + hoffset);
50 } 50 }
51 51
52 virtual void onDraw(SkCanvas* canvas) { 52 virtual void onDraw(SkCanvas* canvas) {
53 SkPaint paint; 53 SkPaint paint;
54 paint.setStyle(SkPaint::kStroke_Style); 54 paint.setStyle(SkPaint::kStroke_Style);
55 55
56 for (int y = 0; y < 2; y++) { 56 for (int y = 0; y < 2; y++) {
57 paint.setAntiAlias(!!y); 57 paint.setAntiAlias(!!y);
58 for (int x = 0; x < 2; x++) { 58 for (int x = 0; x < 2; x++) {
59 paint.setStrokeWidth(x * SkIntToScalar(3)); 59 paint.setStrokeWidth(x * SkIntToScalar(3));
60 60
61 SkAutoCanvasRestore acr(canvas, true); 61 SkAutoCanvasRestore acr(canvas, true);
62 canvas->translate(SW * x, SH * y); 62 canvas->translate(SW * x, SH * y);
63 canvas->clipRect(SkRect::MakeLTRB( 63 canvas->clipRect(SkRect::MakeLTRB(
64 SkIntToScalar(2), SkIntToScalar(2) 64 SkIntToScalar(2), SkIntToScalar(2)
65 , SW - SkIntToScalar(2), SH - SkIntToScalar(2) 65 , SW - SkIntToScalar(2), SH - SkIntToScalar(2)
66 )); 66 ));
67 67
68 SkLCGRandom rand; 68 SkRandom rand;
69 for (int i = 0; i < N; i++) { 69 for (int i = 0; i < N; i++) {
70 SkRect r; 70 SkRect r;
71 rnd_rect(&r, rand); 71 rnd_rect(&r, rand);
72 canvas->drawRect(r, paint); 72 canvas->drawRect(r, paint);
73 } 73 }
74 } 74 }
75 } 75 }
76 } 76 }
77 77
78 private: 78 private:
79 typedef GM INHERITED; 79 typedef GM INHERITED;
80 }; 80 };
81 81
82 ////////////////////////////////////////////////////////////////////////////// 82 //////////////////////////////////////////////////////////////////////////////
83 83
84 static GM* MyFactory(void*) { return new StrokeRectsGM; } 84 static GM* MyFactory(void*) { return new StrokeRectsGM; }
85 static GMRegistry reg(MyFactory); 85 static GMRegistry reg(MyFactory);
86 86
87 } 87 }
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