1/*
2 * Copyright 2015 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 "SkTArray.h"
11
12namespace skiagm {
13
14// this GM tests hairlines which fill nearly the entire render target
15class StLouisArchGM : public GM {
16protected:
17    SkString onShortName() override {
18        return SkString("stlouisarch");
19    }
20
21    SkISize onISize() override { return SkISize::Make((int)kWidth, (int)kHeight); }
22
23    void onOnceBeforeDraw() override {
24        {
25            SkPath* bigQuad = &fPaths.push_back();
26            bigQuad->moveTo(0, 0);
27            bigQuad->quadTo(kWidth/2, kHeight, kWidth, 0);
28        }
29
30        {
31            SkPath* degenBigQuad = &fPaths.push_back();
32            SkScalar yPos = kHeight / 2 + 10;
33            degenBigQuad->moveTo(0, yPos);
34            degenBigQuad->quadTo(0, yPos, kWidth, yPos);
35        }
36
37
38        {
39            SkPath* bigCubic = &fPaths.push_back();
40            bigCubic->moveTo(0, 0);
41            bigCubic->cubicTo(0, kHeight,
42                              kWidth, kHeight,
43                              kWidth, 0);
44        }
45
46        {
47            SkPath* degenBigCubic = &fPaths.push_back();
48            SkScalar yPos = kHeight / 2;
49            degenBigCubic->moveTo(0, yPos);
50            degenBigCubic->cubicTo(0, yPos,
51                                   0, yPos,
52                                   kWidth, yPos);
53        }
54
55        {
56            SkPath* bigConic = &fPaths.push_back();
57            bigConic->moveTo(0, 0);
58            bigConic->conicTo(kWidth/2, kHeight, kWidth, 0, .5);
59        }
60
61        {
62            SkPath* degenBigConic = &fPaths.push_back();
63            SkScalar yPos = kHeight / 2 - 10;
64            degenBigConic->moveTo(0, yPos);
65            degenBigConic->conicTo(0, yPos, kWidth, yPos, .5);
66        }
67    }
68
69    void onDraw(SkCanvas* canvas) override {
70        canvas->save();
71        canvas->scale(1, -1);
72        canvas->translate(0, -kHeight);
73        for (int p = 0; p < fPaths.count(); ++p) {
74            SkPaint paint;
75            paint.setARGB(0xff, 0, 0, 0);
76            paint.setAntiAlias(true);
77            paint.setStyle(SkPaint::kStroke_Style);
78            paint.setStrokeWidth(0);
79            canvas->drawPath(fPaths[p], paint);
80        }
81        canvas->restore();
82    }
83
84    const SkScalar kWidth = 256;
85    const SkScalar kHeight = 256;
86
87private:
88    SkTArray<SkPath> fPaths;
89    typedef GM INHERITED;
90};
91
92//////////////////////////////////////////////////////////////////////////////
93
94static GM* MyFactory(void*) { return new StLouisArchGM; }
95static GMRegistry reg(MyFactory);
96
97}
98