blob: f9d3ac7f9b458dbc975e35cf44529e10c7026c99 [file] [log] [blame]
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +00001/*
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"
bsalomon687d9d22016-06-10 12:09:59 -070011#include "SkDashPathEffect.h"
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000012
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000013static SkPath generate_square(SkScalar cx, SkScalar cy, SkScalar w) {
14 SkRect rect = SkRect::MakeXYWH(cx - w / 2, cy - w / 2, w, w);
15 SkPath path;
16 path.addRect(rect);
17 return path;
18}
19
20static SkPath generate_rect_line(SkScalar cx, SkScalar cy, SkScalar l) {
21 SkRect rect = SkRect::MakeXYWH(cx - l / 2, cy, l, 0);
22 SkPath path;
23 path.addRect(rect);
24 return path;
25}
26
27static SkPath generate_circle(SkScalar cx, SkScalar cy, SkScalar d) {
28 SkPath path;
29 path.addCircle(cx, cy, d/2, SkPath::kCW_Direction);
30 return path;
31}
32
33static SkPath generate_line(SkScalar cx, SkScalar cy, SkScalar l) {
34 SkPath path;
35 path.moveTo(cx - l / 2, cy);
36 path.lineTo(cx + l / 2, cy);
37 return path;
38}
39
halcanary2a243382015-09-09 08:16:41 -070040namespace {
bsalomon687d9d22016-06-10 12:09:59 -070041struct Style {
42 Style(SkPaint::Style paintStyle, sk_sp<SkPathEffect> pe = sk_sp<SkPathEffect>())
43 : fPaintStyle(paintStyle)
44 , fPathEffect(std::move(pe)) {}
45 SkPaint::Style fPaintStyle;
46 sk_sp<SkPathEffect> fPathEffect;
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000047};
bsalomon687d9d22016-06-10 12:09:59 -070048
49sk_sp<SkPathEffect> make_dash() {
mtkleindbfd7ab2016-09-01 11:24:54 -070050 constexpr SkScalar kIntervals[] = { 4.f, 3.f };
bsalomon687d9d22016-06-10 12:09:59 -070051 return SkDashPathEffect::Make(kIntervals, SK_ARRAY_COUNT(kIntervals), 0);
52}
53
54Style styles[] {
55 {SkPaint::kStroke_Style},
56 {SkPaint::kStrokeAndFill_Style},
57 {SkPaint::kFill_Style},
58 {SkPaint::kStroke_Style, make_dash()},
59};
60
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000061SkScalar pathSizes[] = {
62 40,
63 10,
64 0
65};
66SkScalar strokeWidths[] = {
67 10,
68 0
69};
Ben Wagner1a1d2412017-10-17 17:33:44 -040070SkPath (*paths[])(SkScalar, SkScalar, SkScalar) = {
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000071 generate_square,
72 generate_rect_line,
73 generate_circle,
74 generate_line
75};
76
77const SkScalar slideWidth = 90, slideHeight = 90;
78const SkScalar slideBoundary = 5;
79
halcanary2a243382015-09-09 08:16:41 -070080} // namespace
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000081
bsalomon687d9d22016-06-10 12:09:59 -070082DEF_SIMPLE_GM(inverse_paths, canvas, 800, 1200) {
83 SkScalar cx = slideWidth / 2 + slideBoundary;
84 SkScalar cy = slideHeight / 2 + slideBoundary;
85 SkScalar dx = slideWidth + 2 * slideBoundary;
86 SkScalar dy = slideHeight + 2 * slideBoundary;
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000087
bsalomon687d9d22016-06-10 12:09:59 -070088 SkRect clipRect = SkRect::MakeLTRB(slideBoundary, slideBoundary,
89 slideBoundary + slideWidth,
90 slideBoundary + slideHeight);
91 SkPaint clipPaint;
92 clipPaint.setStyle(SkPaint::kStroke_Style);
93 clipPaint.setStrokeWidth(SkIntToScalar(2));
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000094
bsalomon687d9d22016-06-10 12:09:59 -070095 SkPaint outlinePaint;
96 outlinePaint.setColor(0x40000000);
97 outlinePaint.setStyle(SkPaint::kStroke_Style);
98 outlinePaint.setStrokeWidth(SkIntToScalar(0));
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +000099
bsalomon687d9d22016-06-10 12:09:59 -0700100 for (size_t styleIndex = 0; styleIndex < SK_ARRAY_COUNT(styles);
101 styleIndex++) {
102 for (size_t sizeIndex = 0; sizeIndex < SK_ARRAY_COUNT(pathSizes);
103 sizeIndex++) {
104 SkScalar size = pathSizes[sizeIndex];
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000105
bsalomon687d9d22016-06-10 12:09:59 -0700106 canvas->save();
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000107
bsalomon687d9d22016-06-10 12:09:59 -0700108 for (size_t widthIndex = 0;
109 widthIndex < SK_ARRAY_COUNT(strokeWidths);
110 widthIndex++) {
111 SkPaint paint;
112 paint.setColor(0xff007000);
113 paint.setStrokeWidth(strokeWidths[widthIndex]);
114 paint.setStyle(styles[styleIndex].fPaintStyle);
115 paint.setPathEffect(styles[styleIndex].fPathEffect);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000116
bsalomon687d9d22016-06-10 12:09:59 -0700117 for (size_t pathIndex = 0;
118 pathIndex < SK_ARRAY_COUNT(paths);
119 pathIndex++) {
120 canvas->drawRect(clipRect, clipPaint);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000121
bsalomon687d9d22016-06-10 12:09:59 -0700122 canvas->save();
123 canvas->clipRect(clipRect);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000124
bsalomon687d9d22016-06-10 12:09:59 -0700125 SkPath path = paths[pathIndex](cx, cy, size);
126 path.setFillType(SkPath::kInverseWinding_FillType);
127 canvas->drawPath(path, paint);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000128
bsalomon687d9d22016-06-10 12:09:59 -0700129 path.setFillType(SkPath::kWinding_FillType);
130 canvas->drawPath(path, outlinePaint);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000131
bsalomon687d9d22016-06-10 12:09:59 -0700132 canvas->restore();
133 canvas->translate(dx, 0);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000134 }
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000135 }
bsalomon687d9d22016-06-10 12:09:59 -0700136 canvas->restore();
137 canvas->translate(0, dy);
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000138 }
bsalomon687d9d22016-06-10 12:09:59 -0700139 }
commit-bot@chromium.org92ffe7d2013-07-31 22:54:31 +0000140}