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1 /* | |
2 * Copyright 2015 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 #include "gm.h" | |
9 #include "SkCanvas.h" | |
10 #include "SkRRect.h" | |
11 #include "SkPath.h" | |
12 | |
13 class ScaledStrokesGM : public skiagm::GM { | |
14 public: | |
15 ScaledStrokesGM() {} | |
16 | |
17 protected: | |
18 | |
19 SkString onShortName() override { | |
20 return SkString("scaledstrokes"); | |
21 } | |
22 | |
23 SkISize onISize() override { | |
24 return SkISize::Make(640, 320); | |
25 } | |
26 | |
27 void drawPath(int size, SkCanvas* canvas, SkPaint paint) { | |
egdaniel
2015/08/18 16:25:28
make this draw_path
| |
28 float c = 0.551915024494 * size; | |
29 SkPath path; | |
30 path.moveTo(0, size); | |
31 path.cubicTo(c, size, size, c, size, 0); | |
32 path.cubicTo(size, -c, c, -size, 0, -size); | |
33 path.cubicTo(-c, -size, -size, -c, -size, 0); | |
34 path.cubicTo(-size, c, -c, size, 0, size); | |
35 canvas->drawPath(path, paint); | |
36 } | |
37 | |
38 void onDraw(SkCanvas* canvas) override { | |
39 SkPaint paint; | |
40 SkPath path; | |
41 paint.setStyle(SkPaint::Style::kStroke_Style); | |
42 canvas->translate(5, 5); | |
43 const SkScalar size = 60; | |
44 for (int i = 0; i < 2; i++) { | |
45 paint.setAntiAlias(i == 1); | |
46 canvas->save(); | |
47 for (int j = 0; j < 4; j++) { | |
48 SkScalar scale = 4 - j; | |
49 paint.setStrokeWidth(4 / scale); | |
50 canvas->save(); | |
51 canvas->translate(size / 2, size / 2); | |
52 canvas->scale(scale, scale); | |
53 drawPath(size / 2 / scale, canvas, paint); | |
54 canvas->restore(); | |
55 | |
56 canvas->save(); | |
57 canvas->translate(size / 2, 80 + size / 2); | |
58 canvas->scale(scale, scale); | |
59 canvas->drawCircle(0, 0, size / 2 / scale, paint); | |
60 canvas->restore(); | |
61 | |
62 canvas->save(); | |
63 canvas->translate(0, 160); | |
64 canvas->scale(scale, scale); | |
65 canvas->drawRect(SkRect::MakeXYWH(0, 0, size / scale, size / sca le), paint); | |
66 canvas->restore(); | |
67 | |
68 canvas->save(); | |
69 canvas->translate(0, 240); | |
70 canvas->scale(scale, scale); | |
71 canvas->drawLine(0, 0, size / scale, size / scale, paint); | |
72 canvas->restore(); | |
73 | |
74 canvas->translate(80, 0); | |
75 } | |
76 } | |
77 | |
78 } | |
79 | |
80 private: | |
81 typedef GM INHERITED; | |
82 }; | |
83 | |
84 DEF_GM( return new ScaledStrokesGM; ) | |
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