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
|
/*
* 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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGraphics.h"
#include "SkRandom.h"
#include "SkLayerDrawLooper.h"
#include "SkBlurMaskFilter.h"
#define WIDTH 200
#define HEIGHT 200
class LooperView : public SampleView {
public:
SkLayerDrawLooper* fLooper;
LooperView() {
static const struct {
SkColor fColor;
SkPaint::Style fStyle;
SkScalar fWidth;
SkScalar fOffset;
int fBlur;
} gParams[] = {
{ SK_ColorWHITE, SkPaint::kStroke_Style, SkIntToScalar(1)*3/4, 0, 0 },
{ SK_ColorRED, SkPaint::kStroke_Style, SkIntToScalar(4), 0, 0 },
{ SK_ColorBLUE, SkPaint::kFill_Style, 0, 0, 0 },
{ 0x88000000, SkPaint::kFill_Style, 0, SkIntToScalar(10), 3 }
};
fLooper = new SkLayerDrawLooper;
SkLayerDrawLooper::LayerInfo info;
info.fFlagsMask = SkPaint::kAntiAlias_Flag;
info.fPaintBits = SkLayerDrawLooper::kStyle_Bit | SkLayerDrawLooper::kMaskFilter_Bit;
info.fColorMode = SkXfermode::kSrc_Mode;
for (size_t i = 0; i < SK_ARRAY_COUNT(gParams); i++) {
info.fOffset.set(gParams[i].fOffset, gParams[i].fOffset);
SkPaint* paint = fLooper->addLayer(info);
paint->setAntiAlias(true);
paint->setColor(gParams[i].fColor);
paint->setStyle(gParams[i].fStyle);
paint->setStrokeWidth(gParams[i].fWidth);
if (gParams[i].fBlur > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(SkIntToScalar(gParams[i].fBlur),
SkBlurMaskFilter::kNormal_BlurStyle);
paint->setMaskFilter(mf)->unref();
}
}
this->setBGColor(0xFFDDDDDD);
}
virtual ~LooperView() {
SkSafeUnref(fLooper);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "DrawLooper");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setTextSize(SkIntToScalar(72));
paint.setLooper(fLooper);
canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
SkIntToScalar(30), paint);
canvas->drawRectCoords(SkIntToScalar(150), SkIntToScalar(50),
SkIntToScalar(200), SkIntToScalar(100), paint);
canvas->drawText("Looper", 6, SkIntToScalar(230), SkIntToScalar(100),
paint);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new LooperView; }
static SkViewRegister reg(MyFactory);
|
