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 #include "gm.h"
9 #include "SkCanvas.h"
10 #include "SkCullPoints.h"
11 #include "SkRandom.h"
12
test_hittest(SkCanvas * canvas,const SkPath & path)13 static void test_hittest(SkCanvas* canvas, const SkPath& path) {
14 SkPaint paint;
15 SkRect r = path.getBounds();
16
17 paint.setColor(SK_ColorRED);
18 canvas->drawPath(path, paint);
19
20 const SkScalar MARGIN = SkIntToScalar(4);
21
22 paint.setColor(0x800000FF);
23 for (SkScalar y = r.fTop + SK_ScalarHalf - MARGIN; y < r.fBottom + MARGIN; y += SK_Scalar1) {
24 for (SkScalar x = r.fLeft + SK_ScalarHalf - MARGIN; x < r.fRight + MARGIN; x += SK_Scalar1) {
25 if (path.contains(x, y)) {
26 canvas->drawPoint(x, y, paint);
27 }
28 }
29 }
30 }
31
32 class HitTestPathGM : public skiagm::GM {
33 public:
HitTestPathGM()34 HitTestPathGM () {}
35
36 protected:
37
onShortName()38 SkString onShortName() override {
39 return SkString("hittestpath");
40 }
41
onISize()42 SkISize onISize() override { return SkISize::Make(700, 460); }
43
onDraw(SkCanvas * canvas)44 void onDraw(SkCanvas* canvas) override {
45 SkPath path;
46 SkRandom rand;
47
48 int scale = 300;
49 for (int i = 0; i < 4; ++i) {
50 path.lineTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
51 path.quadTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
52 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
53 path.cubicTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
54 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale,
55 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale);
56 }
57
58 path.setFillType(SkPath::kEvenOdd_FillType);
59 path.offset(SkIntToScalar(20), SkIntToScalar(20));
60
61 test_hittest(canvas, path);
62
63 canvas->translate(SkIntToScalar(scale), 0);
64 path.setFillType(SkPath::kWinding_FillType);
65
66 test_hittest(canvas, path);
67 }
68
69 private:
70 typedef GM INHERITED;
71 };
72
73 //////////////////////////////////////////////////////////////////////////////
74
MyFactory(void *)75 static skiagm::GM* MyFactory(void*) { return new HitTestPathGM; }
76 static skiagm::GMRegistry reg(MyFactory);
77