aboutsummaryrefslogtreecommitdiffhomepage
path: root/gm/shadows.cpp
blob: 2fb1615cf95a5fce382e6ed58f6df56a22090ca4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121

/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "gm.h"
#include "SkBlurDrawLooper.h"

namespace skiagm {

///////////////////////////////////////////////////////////////////////////////

static void setup(SkPaint* paint, SkColor c, SkScalar strokeWidth) {
    paint->setColor(c);
    if (strokeWidth < 0) {
        paint->setStyle(SkPaint::kFill_Style);
    } else {
        paint->setStyle(SkPaint::kStroke_Style);
        paint->setStrokeWidth(strokeWidth);
    }
}

class ShadowsGM : public GM {
public:
    SkPath fCirclePath;
    SkRect fRect;

    ShadowsGM() {
        this->setBGColor(0xFFDDDDDD);
        fCirclePath.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(10) );
        fRect.set(SkIntToScalar(10), SkIntToScalar(10),
                  SkIntToScalar(30), SkIntToScalar(30));
    }

protected:
    virtual SkString onShortName() {
        return SkString("shadows");
    }

    virtual SkISize onISize() {
        return make_isize(200, 120);
    }

    virtual void onDraw(SkCanvas* canvas) {
    SkBlurDrawLooper* shadowLoopers[5];
    shadowLoopers[0] =
        new SkBlurDrawLooper (SkIntToScalar(10), SkIntToScalar(5),
                              SkIntToScalar(10), 0xFF0000FF,
                              SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                              SkBlurDrawLooper::kOverrideColor_BlurFlag |
                              SkBlurDrawLooper::kHighQuality_BlurFlag );
    SkAutoUnref aurL0(shadowLoopers[0]);
    shadowLoopers[1] =
        new SkBlurDrawLooper (SkIntToScalar(10), SkIntToScalar(5),
                              SkIntToScalar(10), 0xFF0000FF,
                              SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                              SkBlurDrawLooper::kOverrideColor_BlurFlag );
    SkAutoUnref aurL1(shadowLoopers[1]);
    shadowLoopers[2] =
        new SkBlurDrawLooper (SkIntToScalar(5), SkIntToScalar(5),
                              SkIntToScalar(10), 0xFF000000,
                              SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                              SkBlurDrawLooper::kHighQuality_BlurFlag  );
    SkAutoUnref aurL2(shadowLoopers[2]);
    shadowLoopers[3] =
        new SkBlurDrawLooper (SkIntToScalar(5), SkIntToScalar(-5),
                              SkIntToScalar(-10), 0x7FFF0000,
                              SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                              SkBlurDrawLooper::kOverrideColor_BlurFlag |
                              SkBlurDrawLooper::kHighQuality_BlurFlag  );
    SkAutoUnref aurL3(shadowLoopers[3]);
    shadowLoopers[4] =
        new SkBlurDrawLooper (SkIntToScalar(0), SkIntToScalar(5),
                              SkIntToScalar(5), 0xFF000000,
                              SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
                              SkBlurDrawLooper::kOverrideColor_BlurFlag |
                              SkBlurDrawLooper::kHighQuality_BlurFlag  );
    SkAutoUnref aurL4(shadowLoopers[4]);

    static const struct {
        SkColor fColor;
        SkScalar fStrokeWidth;
    } gRec[] = {
        { SK_ColorRED,      -SK_Scalar1 },
        { SK_ColorGREEN,    SkIntToScalar(4) },
        { SK_ColorBLUE,     SkIntToScalar(0)},
    };

    SkPaint paint;
    paint.setAntiAlias(true);
    for (size_t i = 0; i < SK_ARRAY_COUNT(shadowLoopers); ++i) {
        SkAutoCanvasRestore acr(canvas, true);

        paint.setLooper(shadowLoopers[i]);

        canvas->translate(SkIntToScalar((unsigned int)i*40), SkIntToScalar(0));
        setup(&paint, gRec[0].fColor, gRec[0].fStrokeWidth);
        canvas->drawRect(fRect, paint);

        canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
        setup(&paint, gRec[1].fColor, gRec[1].fStrokeWidth);
        canvas->drawPath(fCirclePath, paint);

        canvas->translate(SkIntToScalar(0), SkIntToScalar(40));
        setup(&paint, gRec[2].fColor, gRec[2].fStrokeWidth);
        canvas->drawPath(fCirclePath, paint);
    }
}

private:
    typedef GM INHERITED;
};

///////////////////////////////////////////////////////////////////////////////

static GM* MyFactory(void*) { return new ShadowsGM; }
static GMRegistry reg(MyFactory);

}