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1 /* | |
2 * Copyright 2013 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 "SkPath.h" | |
11 | |
12 namespace skiagm { | |
13 | |
14 class CircularClipsGM : public GM { | |
15 public: | |
16 CircularClipsGM() { | |
17 | |
edisonn
2013/07/31 18:27:37
nit: {}
ducky
2013/08/01 00:45:08
Done.
| |
18 } | |
19 | |
20 protected: | |
21 virtual SkString onShortName() { | |
22 return SkString("circular-clips"); | |
23 } | |
24 | |
25 virtual SkISize onISize() { | |
26 return SkISize::Make(800, 600); | |
27 } | |
28 | |
29 virtual void onDraw(SkCanvas* canvas) { | |
30 SkRegion::Op ops[] = { | |
31 SkRegion::kDifference_Op, | |
32 SkRegion::kIntersect_Op, | |
33 SkRegion::kUnion_Op, | |
34 SkRegion::kXOR_Op, | |
35 SkRegion::kReverseDifference_Op, | |
36 SkRegion::kReplace_Op, | |
37 }; | |
38 | |
39 SkScalar x1 = 80, x2 = 120; | |
40 SkScalar y = 50; | |
41 SkScalar r = 40; | |
42 | |
43 SkPath circle1, circle2; | |
44 circle1.addCircle(x1, y, r, SkPath::kCW_Direction); | |
45 circle2.addCircle(x2, y, r, SkPath::kCW_Direction); | |
46 SkRect rect = SkRect::MakeLTRB(x1 - r, y - r, x2 + r, y + r); | |
47 | |
48 SkPaint fillPaint; | |
49 | |
50 for (size_t i = 0; i < 4; i++) { | |
51 circle1.toggleInverseFillType(); | |
52 if (i % 2 == 0) { | |
53 circle2.toggleInverseFillType(); | |
54 } | |
55 | |
56 canvas->save(); | |
57 for (size_t op = 0; op < SK_ARRAY_COUNT(ops); op++) { | |
58 canvas->save(); | |
59 | |
60 canvas->clipPath(circle1, SkRegion::kReplace_Op); | |
61 canvas->clipPath(circle2, ops[op]); | |
62 | |
63 canvas->drawRect(rect, fillPaint); | |
64 | |
65 canvas->restore(); | |
66 canvas->translate(0, 2 * y); | |
67 } | |
68 canvas->restore(); | |
69 canvas->translate(x1 + x2, 0); | |
70 } | |
71 } | |
72 | |
73 private: | |
74 typedef GM INHERITED; | |
75 }; | |
76 | |
77 ////////////////////////////////////////////////////////////////////////////// | |
78 | |
79 DEF_GM( return new CircularClipsGM; ) | |
80 } | |
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