1
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 */
8
9 #include "SkPathEffect.h"
10 #include "SkPath.h"
11 #include "SkFlattenableBuffers.h"
12
13 ///////////////////////////////////////////////////////////////////////////////
14
SK_DEFINE_INST_COUNT(SkPathEffect)15 SK_DEFINE_INST_COUNT(SkPathEffect)
16
17 void SkPathEffect::computeFastBounds(SkRect* dst, const SkRect& src) const {
18 *dst = src;
19 }
20
asPoints(PointData * results,const SkPath & src,const SkStrokeRec &,const SkMatrix &,const SkRect *) const21 bool SkPathEffect::asPoints(PointData* results, const SkPath& src,
22 const SkStrokeRec&, const SkMatrix&, const SkRect*) const {
23 return false;
24 }
25
26 ///////////////////////////////////////////////////////////////////////////////
27
SkPairPathEffect(SkPathEffect * pe0,SkPathEffect * pe1)28 SkPairPathEffect::SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1)
29 : fPE0(pe0), fPE1(pe1) {
30 SkASSERT(pe0);
31 SkASSERT(pe1);
32 fPE0->ref();
33 fPE1->ref();
34 }
35
~SkPairPathEffect()36 SkPairPathEffect::~SkPairPathEffect() {
37 SkSafeUnref(fPE0);
38 SkSafeUnref(fPE1);
39 }
40
41 /*
42 Format: [oe0-factory][pe1-factory][pe0-size][pe0-data][pe1-data]
43 */
flatten(SkFlattenableWriteBuffer & buffer) const44 void SkPairPathEffect::flatten(SkFlattenableWriteBuffer& buffer) const {
45 this->INHERITED::flatten(buffer);
46 buffer.writeFlattenable(fPE0);
47 buffer.writeFlattenable(fPE1);
48 }
49
SkPairPathEffect(SkFlattenableReadBuffer & buffer)50 SkPairPathEffect::SkPairPathEffect(SkFlattenableReadBuffer& buffer) {
51 fPE0 = buffer.readFlattenableT<SkPathEffect>();
52 fPE1 = buffer.readFlattenableT<SkPathEffect>();
53 // either of these may fail, so we have to check for nulls later on
54 }
55
56 ///////////////////////////////////////////////////////////////////////////////
57
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const58 bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src,
59 SkStrokeRec* rec, const SkRect* cullRect) const {
60 // we may have failed to unflatten these, so we have to check
61 if (!fPE0 || !fPE1) {
62 return false;
63 }
64
65 SkPath tmp;
66 const SkPath* ptr = &src;
67
68 if (fPE1->filterPath(&tmp, src, rec, cullRect)) {
69 ptr = &tmp;
70 }
71 return fPE0->filterPath(dst, *ptr, rec, cullRect);
72 }
73
74 ///////////////////////////////////////////////////////////////////////////////
75
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const76 bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src,
77 SkStrokeRec* rec, const SkRect* cullRect) const {
78 // use bit-or so that we always call both, even if the first one succeeds
79 return fPE0->filterPath(dst, src, rec, cullRect) |
80 fPE1->filterPath(dst, src, rec, cullRect);
81 }
82