1/*
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#include "SkParsePath.h"
12#include "SkDashPathEffect.h"
13
14/*
15 *  Inspired by http://code.google.com/p/chromium/issues/detail?id=112145
16 */
17
18class DashCubicsGM : public skiagm::GM {
19public:
20    DashCubicsGM() {}
21
22protected:
23
24    virtual SkString onShortName() {
25        return SkString("dashcubics");
26    }
27
28    virtual SkISize onISize() {
29        return SkISize::Make(860, 700);
30    }
31
32    void flower(SkCanvas* canvas, const SkPath& path, SkScalar intervals[2], SkPaint::Join join) {
33        SkPathEffect* pe = SkDashPathEffect::Create(intervals, 2, 0);
34
35        SkPaint paint;
36        paint.setAntiAlias(true);
37        paint.setStyle(SkPaint::kStroke_Style);
38        paint.setStrokeJoin(join);
39        paint.setStrokeWidth(42);
40        canvas->drawPath(path, paint);
41
42        paint.setColor(SK_ColorRED);
43        paint.setStrokeWidth(21);
44        paint.setPathEffect(pe)->unref();
45        canvas->drawPath(path, paint);
46
47        paint.setColor(SK_ColorGREEN);
48        paint.setPathEffect(NULL);
49        paint.setStrokeWidth(0);
50        canvas->drawPath(path, paint);
51    }
52
53    virtual void onDraw(SkCanvas* canvas) {
54        SkPath path;
55        const char* d = "M 337,98 C 250,141 250,212 250,212 C 250,212 250,212 250,212"
56        "C 250,212 250,212 250,212 C 250,212 250,141 163,98 C 156,195 217,231 217,231"
57        "C 217,231 217,231 217,231 C 217,231 217,231 217,231 C 217,231 156,195 75,250"
58        "C 156,305 217,269 217,269 C 217,269 217,269 217,269 C 217,269 217,269 217,269"
59        "C 217,269 156,305 163,402 C 250,359 250,288 250,288 C 250,288 250,288 250,288"
60        "C 250,288 250,288 250,288 C 250,288 250,359 338,402 C 345,305 283,269 283,269"
61        "C 283,269 283,269 283,269 C 283,269 283,269 283,269 C 283,269 345,305 425,250"
62        "C 344,195 283,231 283,231 C 283,231 283,231 283,231 C 283,231 283,231 283,231"
63        "C 283,231 344,195 338,98";
64
65        SkParsePath::FromSVGString(d, &path);
66            canvas->translate(-35.f, -55.f);
67        for (int x = 0; x < 2; ++x) {
68            for (int y = 0; y < 2; ++y) {
69                canvas->save();
70                canvas->translate(x * 430.f, y * 355.f);
71                SkScalar intervals[] = { 5 + (x ? 0 : 0.0001f + 0.0001f), 10 };
72                flower(canvas, path, intervals, y ? SkPaint::kDefault_Join : SkPaint::kRound_Join);
73                canvas->restore();
74            }
75        }
76    }
77
78private:
79    typedef GM INHERITED;
80};
81
82//////////////////////////////////////////////////////////////////////////////
83
84static skiagm::GM* MyFactory(void*) { return new DashCubicsGM; }
85static skiagm::GMRegistry reg(MyFactory);
86