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
129
130
131
132
133
134
135
|
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Sk2DPathEffect.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkStrokeRec.h"
Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) {
// Calling invert will set the type mask on both matrices, making them thread safe.
fMatrixIsInvertible = fMatrix.invert(&fInverse);
}
bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec*, const SkRect*) const {
if (!fMatrixIsInvertible) {
return false;
}
SkPath tmp;
SkIRect ir;
src.transform(fInverse, &tmp);
tmp.getBounds().round(&ir);
if (!ir.isEmpty()) {
this->begin(ir, dst);
SkRegion rgn;
rgn.setPath(tmp, SkRegion(ir));
SkRegion::Iterator iter(rgn);
for (; !iter.done(); iter.next()) {
const SkIRect& rect = iter.rect();
for (int y = rect.fTop; y < rect.fBottom; ++y) {
this->nextSpan(rect.fLeft, y, rect.width(), dst);
}
}
this->end(dst);
}
return true;
}
void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) const {
if (!fMatrixIsInvertible) {
return;
}
const SkMatrix& mat = this->getMatrix();
SkPoint src, dst;
src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf);
do {
mat.mapPoints(&dst, &src, 1);
this->next(dst, x++, y, path);
src.fX += SK_Scalar1;
} while (--count > 0);
}
void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) const {}
void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) const {}
void Sk2DPathEffect::end(SkPath* dst) const {}
///////////////////////////////////////////////////////////////////////////////
void Sk2DPathEffect::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeMatrix(fMatrix);
}
///////////////////////////////////////////////////////////////////////////////
bool SkLine2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec* rec, const SkRect* cullRect) const {
if (this->INHERITED::filterPath(dst, src, rec, cullRect)) {
rec->setStrokeStyle(fWidth);
return true;
}
return false;
}
void SkLine2DPathEffect::nextSpan(int u, int v, int ucount, SkPath* dst) const {
if (ucount > 1) {
SkPoint src[2], dstP[2];
src[0].set(SkIntToScalar(u) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
this->getMatrix().mapPoints(dstP, src, 2);
dst->moveTo(dstP[0]);
dst->lineTo(dstP[1]);
}
}
sk_sp<SkFlattenable> SkLine2DPathEffect::CreateProc(SkReadBuffer& buffer) {
SkMatrix matrix;
buffer.readMatrix(&matrix);
SkScalar width = buffer.readScalar();
return SkLine2DPathEffect::Make(width, matrix);
}
void SkLine2DPathEffect::flatten(SkWriteBuffer &buffer) const {
buffer.writeMatrix(this->getMatrix());
buffer.writeScalar(fWidth);
}
///////////////////////////////////////////////////////////////////////////////
SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p)
: INHERITED(m), fPath(p) {
}
sk_sp<SkFlattenable> SkPath2DPathEffect::CreateProc(SkReadBuffer& buffer) {
SkMatrix matrix;
buffer.readMatrix(&matrix);
SkPath path;
buffer.readPath(&path);
return SkPath2DPathEffect::Make(matrix, path);
}
void SkPath2DPathEffect::flatten(SkWriteBuffer& buffer) const {
buffer.writeMatrix(this->getMatrix());
buffer.writePath(fPath);
}
void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v,
SkPath* dst) const {
dst->addPath(fPath, loc.fX, loc.fY);
}
|
