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reed@google.com603dbed2012-11-20 19:00:28 +00001/*
2 * Copyright 2012 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#define STROKE_WIDTH SkIntToScalar(20)
13
reed@google.com99033952012-11-20 21:32:30 +000014static void draw_path(SkCanvas* canvas, const SkPath& path, const SkRect& rect,
15 SkPaint::Join join, int doFill) {
reed@google.com603dbed2012-11-20 19:00:28 +000016 SkPaint paint;
17 paint.setAntiAlias(true);
reed@google.com99033952012-11-20 21:32:30 +000018 paint.setStyle(doFill ? SkPaint::kStrokeAndFill_Style : SkPaint::kStroke_Style);
reed@google.com603dbed2012-11-20 19:00:28 +000019
caryclarkf597c422015-07-28 10:37:53 -070020 paint.setColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
reed@google.com603dbed2012-11-20 19:00:28 +000021 paint.setStrokeWidth(STROKE_WIDTH);
22 paint.setStrokeJoin(join);
23 canvas->drawRect(rect, paint);
24
reed@google.com99033952012-11-20 21:32:30 +000025 paint.setStyle(SkPaint::kStroke_Style);
reed@google.com603dbed2012-11-20 19:00:28 +000026 paint.setStrokeWidth(0);
27 paint.setColor(SK_ColorRED);
28 canvas->drawPath(path, paint);
29
30 paint.setStrokeWidth(3);
31 paint.setStrokeJoin(SkPaint::kMiter_Join);
32 int n = path.countPoints();
33 SkAutoTArray<SkPoint> points(n);
34 path.getPoints(points.get(), n);
35 canvas->drawPoints(SkCanvas::kPoints_PointMode, n, points.get(), paint);
36}
37
38/*
39 * Test calling SkStroker for rectangles. Cases to cover:
40 *
41 * geometry: normal, small (smaller than stroke-width), empty, inverted
42 * joint-type for the corners
43 */
44class StrokeRectGM : public skiagm::GM {
45public:
46 StrokeRectGM() {}
47
48protected:
commit-bot@chromium.orga90c6802014-04-30 13:20:45 +000049
mtklein36352bf2015-03-25 18:17:31 -070050 SkString onShortName() override {
reed@google.com603dbed2012-11-20 19:00:28 +000051 return SkString("strokerect");
52 }
53
mtklein36352bf2015-03-25 18:17:31 -070054 SkISize onISize() override {
reed@google.com99033952012-11-20 21:32:30 +000055 return SkISize::Make(1024, 740);
reed@google.com603dbed2012-11-20 19:00:28 +000056 }
57
mtklein36352bf2015-03-25 18:17:31 -070058 void onDraw(SkCanvas* canvas) override {
reed@google.com603dbed2012-11-20 19:00:28 +000059 canvas->drawColor(SK_ColorWHITE);
60 canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
61
62 SkPaint paint;
63 paint.setStyle(SkPaint::kStroke_Style);
64 paint.setStrokeWidth(STROKE_WIDTH);
65
66 static const SkPaint::Join gJoins[] = {
67 SkPaint::kMiter_Join, SkPaint::kRound_Join, SkPaint::kBevel_Join
68 };
69
70 static const SkScalar W = 80;
reed@google.com99033952012-11-20 21:32:30 +000071 static const SkScalar H = 80;
reed@google.com603dbed2012-11-20 19:00:28 +000072 static const SkRect gRects[] = {
73 { 0, 0, W, H },
74 { W, 0, 0, H },
75 { 0, H, W, 0 },
76 { 0, 0, STROKE_WIDTH, H },
77 { 0, 0, W, STROKE_WIDTH },
78 { 0, 0, STROKE_WIDTH/2, STROKE_WIDTH/2 },
79 { 0, 0, W, 0 },
80 { 0, 0, 0, H },
81 { 0, 0, 0, 0 },
82 };
reed@google.com603dbed2012-11-20 19:00:28 +000083
reed@google.com99033952012-11-20 21:32:30 +000084 for (int doFill = 0; doFill <= 1; ++doFill) {
85 for (size_t i = 0; i < SK_ARRAY_COUNT(gJoins); ++i) {
86 SkPaint::Join join = gJoins[i];
87 paint.setStrokeJoin(join);
reed@google.com603dbed2012-11-20 19:00:28 +000088
reed@google.com99033952012-11-20 21:32:30 +000089 SkAutoCanvasRestore acr(canvas, true);
90 for (size_t j = 0; j < SK_ARRAY_COUNT(gRects); ++j) {
91 const SkRect& r = gRects[j];
reed@google.com603dbed2012-11-20 19:00:28 +000092
reed@google.com99033952012-11-20 21:32:30 +000093 SkPath path, fillPath;
94 path.addRect(r);
95 paint.getFillPath(path, &fillPath);
96 draw_path(canvas, fillPath, r, join, doFill);
97
98 canvas->translate(W + 2 * STROKE_WIDTH, 0);
99 }
100 acr.restore();
101 canvas->translate(0, H + 2 * STROKE_WIDTH);
reed@google.com603dbed2012-11-20 19:00:28 +0000102 }
reed@google.com99033952012-11-20 21:32:30 +0000103 paint.setStyle(SkPaint::kStrokeAndFill_Style);
reed@google.com603dbed2012-11-20 19:00:28 +0000104 }
105 }
106
107private:
108 typedef GM INHERITED;
109};
110
111///////////////////////////////////////////////////////////////////////////////////////////////////
112
113DEF_GM(return new StrokeRectGM;)