1 // Copyright 2020 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 #include <cfloat>
5
6 REG_FIDDLE(strokerect_gm, 1400, 740, false, 0) {
draw(SkCanvas * canvas)7 void draw(SkCanvas* canvas) {
8 constexpr SkScalar kStrokeWidth = 20;
9 constexpr SkPaint::Join gJoins[] = {SkPaint::kMiter_Join, SkPaint::kRound_Join,
10 SkPaint::kBevel_Join};
11 constexpr SkScalar W = 80;
12 constexpr SkScalar H = 80;
13 constexpr SkRect gRects[] = {
14 {0, 0, W, H},
15 {W, 0, 0, H},
16 {0, H, W, 0},
17 {0, 0, kStrokeWidth, H},
18 {0, 0, W, kStrokeWidth},
19 {0, 0, kStrokeWidth / 2, kStrokeWidth / 2},
20 {0, 0, W, 0},
21 {0, 0, 0, H},
22 {0, 0, 0, 0},
23 {0, 0, W, FLT_EPSILON},
24 {0, 0, FLT_EPSILON, H},
25 {0, 0, FLT_EPSILON, FLT_EPSILON},
26 };
27 canvas->translate(kStrokeWidth * 3 / 2, kStrokeWidth * 3 / 2);
28 for (int doFill = 0; doFill <= 1; ++doFill) {
29 SkPaint::Style style = doFill ? SkPaint::kStrokeAndFill_Style : SkPaint::kStroke_Style;
30 for (size_t i = 0; i < std::size(gJoins); ++i) {
31 SkPaint::Join join = gJoins[i];
32 for (size_t j = 0; j < std::size(gRects); ++j) {
33 SkAutoCanvasRestore acr(canvas, true);
34 canvas->translate(
35 j * (W + 2 * kStrokeWidth),
36 (i + doFill * std::size(gJoins)) * (H + 2 * kStrokeWidth));
37 const SkRect& rect = gRects[j];
38
39 SkPath path, fillPath;
40 path.addRect(rect);
41 SkPaint paint;
42
43 paint.setStrokeWidth(kStrokeWidth);
44 paint.setStyle(style);
45 paint.setStrokeJoin(join);
46 skpathutils::FillPathWithPaint(path, paint, &fillPath);
47
48 paint.setAntiAlias(true);
49 paint.setColor(0xFF8C8A8C);
50 canvas->drawRect(rect, paint);
51
52 paint.setStyle(SkPaint::kStroke_Style);
53 paint.setStrokeWidth(0);
54 paint.setColor(SK_ColorRED);
55 canvas->drawPath(fillPath, paint);
56
57 paint.setStrokeWidth(3);
58 paint.setStrokeJoin(SkPaint::kMiter_Join);
59 int n = fillPath.countPoints();
60 SkPoint* points = new SkPoint[n];
61 fillPath.getPoints(points, n);
62 canvas->drawPoints(SkCanvas::kPoints_PointMode, n, points, paint);
63 delete[] points;
64 }
65 }
66 }
67 }
68 } // END FIDDLE
69