gfx/skia/trunk/src/effects/Sk2DPathEffect.cpp@6474c204b198
gfx/skia/trunk/src/effects/Sk2DPathEffect.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
2 /*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
10 #include "Sk2DPathEffect.h"
11 #include "SkReadBuffer.h"
12 #include "SkWriteBuffer.h"
13 #include "SkPath.h"
14 #include "SkRegion.h"
16 Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) {
17 fMatrixIsInvertible = mat.invert(&fInverse);
18 }
20 bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
21 SkStrokeRec*, const SkRect*) const {
22 if (!fMatrixIsInvertible) {
23 return false;
24 }
26 SkPath tmp;
27 SkIRect ir;
29 src.transform(fInverse, &tmp);
30 tmp.getBounds().round(&ir);
31 if (!ir.isEmpty()) {
32 this->begin(ir, dst);
34 SkRegion rgn;
35 rgn.setPath(tmp, SkRegion(ir));
36 SkRegion::Iterator iter(rgn);
37 for (; !iter.done(); iter.next()) {
38 const SkIRect& rect = iter.rect();
39 for (int y = rect.fTop; y < rect.fBottom; ++y) {
40 this->nextSpan(rect.fLeft, y, rect.width(), dst);
41 }
42 }
44 this->end(dst);
45 }
46 return true;
47 }
49 void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) const {
50 if (!fMatrixIsInvertible) {
51 return;
52 }
54 const SkMatrix& mat = this->getMatrix();
55 SkPoint src, dst;
57 src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf);
58 do {
59 mat.mapPoints(&dst, &src, 1);
60 this->next(dst, x++, y, path);
61 src.fX += SK_Scalar1;
62 } while (--count > 0);
63 }
65 void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) const {}
66 void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) const {}
67 void Sk2DPathEffect::end(SkPath* dst) const {}
69 ///////////////////////////////////////////////////////////////////////////////
71 void Sk2DPathEffect::flatten(SkWriteBuffer& buffer) const {
72 this->INHERITED::flatten(buffer);
73 buffer.writeMatrix(fMatrix);
74 }
76 Sk2DPathEffect::Sk2DPathEffect(SkReadBuffer& buffer) {
77 buffer.readMatrix(&fMatrix);
78 fMatrixIsInvertible = fMatrix.invert(&fInverse);
79 }
81 ///////////////////////////////////////////////////////////////////////////////
83 bool SkLine2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
84 SkStrokeRec* rec, const SkRect* cullRect) const {
85 if (this->INHERITED::filterPath(dst, src, rec, cullRect)) {
86 rec->setStrokeStyle(fWidth);
87 return true;
88 }
89 return false;
90 }
92 void SkLine2DPathEffect::nextSpan(int u, int v, int ucount, SkPath* dst) const {
93 if (ucount > 1) {
94 SkPoint src[2], dstP[2];
96 src[0].set(SkIntToScalar(u) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
97 src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
98 this->getMatrix().mapPoints(dstP, src, 2);
100 dst->moveTo(dstP[0]);
101 dst->lineTo(dstP[1]);
102 }
103 }
105 SkLine2DPathEffect::SkLine2DPathEffect(SkReadBuffer& buffer) : INHERITED(buffer) {
106 fWidth = buffer.readScalar();
107 }
109 void SkLine2DPathEffect::flatten(SkWriteBuffer &buffer) const {
110 this->INHERITED::flatten(buffer);
111 buffer.writeScalar(fWidth);
112 }
114 ///////////////////////////////////////////////////////////////////////////////
116 SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p)
117 : INHERITED(m), fPath(p) {
118 }
120 SkPath2DPathEffect::SkPath2DPathEffect(SkReadBuffer& buffer)
121 : INHERITED(buffer) {
122 buffer.readPath(&fPath);
123 }
125 void SkPath2DPathEffect::flatten(SkWriteBuffer& buffer) const {
126 this->INHERITED::flatten(buffer);
127 buffer.writePath(fPath);
128 }
130 void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v,
131 SkPath* dst) const {
132 dst->addPath(fPath, loc.fX, loc.fY);
133 }
