1/*
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
10namespace skiagm {
11
12// Draw rects with various stroke widths at 1/8 pixel increments
13class ThinStrokedRectsGM : public GM {
14public:
15    ThinStrokedRectsGM() {
16        this->setBGColor(0xFF000000);
17    }
18
19protected:
20    virtual uint32_t onGetFlags() const SK_OVERRIDE {
21        return kSkipTiled_Flag;
22    }
23
24    virtual SkString onShortName() SK_OVERRIDE {
25        return SkString("thinstrokedrects");
26    }
27
28    virtual SkISize onISize() SK_OVERRIDE {
29        return SkISize::Make(240, 320);
30    }
31
32    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
33
34        SkPaint paint;
35        paint.setColor(SK_ColorWHITE);
36        paint.setStyle(SkPaint::kStroke_Style);
37        paint.setAntiAlias(true);
38
39        static const SkRect rect = { 0, 0, 10, 10 };
40        static const SkRect rect2 = { 0, 0, 20, 20 };
41
42        static const SkScalar gStrokeWidths[] = {
43            4, 2, 1, 0.5f, 0.25f, 0.125f, 0
44        };
45
46        canvas->translate(5, 5);
47        for (int i = 0; i < 8; ++i) {
48            canvas->save();
49            canvas->translate(i*0.125f, i*30.0f);
50            for (size_t j = 0; j < SK_ARRAY_COUNT(gStrokeWidths); ++j) {
51                paint.setStrokeWidth(gStrokeWidths[j]);
52                canvas->drawRect(rect, paint);
53                canvas->translate(15, 0);
54            }
55            canvas->restore();
56        }
57
58        // Draw a second time in red with a scale
59        paint.setColor(SK_ColorRED);
60        canvas->translate(0, 15);
61        for (int i = 0; i < 8; ++i) {
62            canvas->save();
63            canvas->translate(i*0.125f, i*30.0f);
64            canvas->scale(0.5f, 0.5f);
65            for (size_t j = 0; j < SK_ARRAY_COUNT(gStrokeWidths); ++j) {
66                paint.setStrokeWidth(2.0f * gStrokeWidths[j]);
67                canvas->drawRect(rect2, paint);
68                canvas->translate(30, 0);
69            }
70            canvas->restore();
71        }
72    }
73
74private:
75    typedef GM INHERITED;
76};
77
78//////////////////////////////////////////////////////////////////////////////
79
80DEF_GM( return SkNEW(ThinStrokedRectsGM); )
81
82}
83