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
122
123
124
125
126
127
128
|
/*
* 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 "SkAAClip.h"
static void testop(const SkIRect& r0, const SkIRect& r1, SkRegion::Op op,
const SkIRect& expectedR) {
SkAAClip c0, c1, c2;
c0.setRect(r0);
c1.setRect(r1);
c2.op(c0, c1, op);
SkIRect r2 = c2.getBounds();
SkASSERT(r2 == expectedR);
}
static const struct {
SkIRect r0;
SkIRect r1;
SkRegion::Op op;
SkIRect expectedR;
} gRec[] = {
{{ 1, 2, 9, 3 }, { -3, 2, 5, 11 }, SkRegion::kDifference_Op, { 5, 2, 9, 3 }},
{{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kDifference_Op, { 1, 11, 5, 13 }},
{{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kReverseDifference_Op, { 1, 2, 5, 10 }},
};
static void testop() {
for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
testop(gRec[i].r0, gRec[i].r1, gRec[i].op, gRec[i].expectedR);
}
}
static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
SkMask mask;
SkBitmap bm;
clip.copyToMask(&mask);
SkAutoMaskFreeImage amfi(mask.fImage);
bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(),
mask.fBounds.height(), mask.fRowBytes);
bm.setPixels(mask.fImage);
SkPaint paint;
canvas->drawBitmap(bm,
SK_Scalar1 * mask.fBounds.fLeft,
SK_Scalar1 * mask.fBounds.fTop,
&paint);
}
class AAClipView : public SampleView {
public:
AAClipView() {
testop();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "AAClip");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
#if 1
SkAAClip aaclip;
SkPath path;
SkRect bounds;
bounds.set(0, 0, 20, 20);
bounds.inset(SK_ScalarHalf, SK_ScalarHalf);
// path.addRect(bounds);
// path.addOval(bounds);
path.addRoundRect(bounds, 4, 4);
aaclip.setPath(path);
canvas->translate(30, 30);
drawClip(canvas, aaclip);
SkAAClip aaclip2;
path.offset(10, 10);
aaclip2.setPath(path);
canvas->translate(30, 0);
drawClip(canvas, aaclip2);
SkAAClip aaclip3;
aaclip3.op(aaclip, aaclip2, SkRegion::kIntersect_Op);
canvas->translate(30, 0);
drawClip(canvas, aaclip3);
#endif
#if 0
SkRect r;
r.set(0, 0, this->width(), this->height());
r.inset(20, 20);
canvas->clipRect(r);
SkPath path;
path.addRect(r);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
canvas->drawPath(path, paint);
#endif
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new AAClipView; }
static SkViewRegister reg(MyFactory);
|
