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/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkPaint.h"
12 #include "include/core/SkPath.h"
13 #include "include/core/SkRect.h"
14 #include "include/core/SkScalar.h"
15 #include "include/core/SkTypes.h"
16 #include "include/utils/SkRandom.h"
17
test_hittest(SkCanvas * canvas,const SkPath & path)18 static void test_hittest(SkCanvas* canvas, const SkPath& path) {
19 SkPaint paint;
20 SkRect r = path.getBounds();
21
22 paint.setColor(SK_ColorRED);
23 canvas->drawPath(path, paint);
24
25 const SkScalar MARGIN = SkIntToScalar(4);
26
27 paint.setColor(0x800000FF);
28 for (SkScalar y = r.fTop + SK_ScalarHalf - MARGIN; y < r.fBottom + MARGIN; y += SK_Scalar1) {
29 for (SkScalar x = r.fLeft + SK_ScalarHalf - MARGIN; x < r.fRight + MARGIN; x += SK_Scalar1) {
30 if (path.contains(x, y)) {
31 canvas->drawPoint(x, y, paint);
32 }
33 }
34 }
35 }
36
37 DEF_SIMPLE_GM(hittestpath, canvas, 700, 460) {
38 SkPath path;
39 SkRandom rand;
40
41 int scale = 300;
42 for (int i = 0; i < 4; ++i) {
43 // get the random values deterministically
44 SkScalar randoms[12];
45 for (int index = 0; index < (int) SK_ARRAY_COUNT(randoms); ++index) {
46 randoms[index] = rand.nextUScalar1();
47 }
48 path.lineTo(randoms[0] * scale, randoms[1] * scale);
49 path.quadTo(randoms[2] * scale, randoms[3] * scale,
50 randoms[4] * scale, randoms[5] * scale);
51 path.cubicTo(randoms[6] * scale, randoms[7] * scale,
52 randoms[8] * scale, randoms[9] * scale,
53 randoms[10] * scale, randoms[11] * scale);
54 }
55
56 path.setFillType(SkPathFillType::kEvenOdd);
57 path.offset(SkIntToScalar(20), SkIntToScalar(20));
58
59 test_hittest(canvas, path);
60
61 canvas->translate(SkIntToScalar(scale), 0);
62 path.setFillType(SkPathFillType::kWinding);
63
64 test_hittest(canvas, path);
65 }
66