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 "SkReadBuffer.h"
12 #include "SkWriteBuffer.h"
13
14 ///////////////////////////////////////////////////////////////////////////////
15
computeFastBounds(SkRect * dst,const SkRect & src) const16 void SkPathEffect::computeFastBounds(SkRect* dst, const SkRect& src) const {
17 *dst = src;
18 }
19
asPoints(PointData * results,const SkPath & src,const SkStrokeRec &,const SkMatrix &,const SkRect *) const20 bool SkPathEffect::asPoints(PointData* results, const SkPath& src,
21 const SkStrokeRec&, const SkMatrix&, const SkRect*) const {
22 return false;
23 }
24
asADash(DashInfo * info) const25 SkPathEffect::DashType SkPathEffect::asADash(DashInfo* info) const {
26 return kNone_DashType;
27 }
28
29 ///////////////////////////////////////////////////////////////////////////////
30
SkPairPathEffect(SkPathEffect * pe0,SkPathEffect * pe1)31 SkPairPathEffect::SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1)
32 : fPE0(pe0), fPE1(pe1) {
33 SkASSERT(pe0);
34 SkASSERT(pe1);
35 fPE0->ref();
36 fPE1->ref();
37 }
38
~SkPairPathEffect()39 SkPairPathEffect::~SkPairPathEffect() {
40 SkSafeUnref(fPE0);
41 SkSafeUnref(fPE1);
42 }
43
44 /*
45 Format: [oe0-factory][pe1-factory][pe0-size][pe0-data][pe1-data]
46 */
flatten(SkWriteBuffer & buffer) const47 void SkPairPathEffect::flatten(SkWriteBuffer& buffer) const {
48 buffer.writeFlattenable(fPE0);
49 buffer.writeFlattenable(fPE1);
50 }
51
52 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
SkPairPathEffect(SkReadBuffer & buffer)53 SkPairPathEffect::SkPairPathEffect(SkReadBuffer& buffer) {
54 fPE0 = buffer.readPathEffect();
55 fPE1 = buffer.readPathEffect();
56 // either of these may fail, so we have to check for nulls later on
57 }
58 #endif
59
60 ///////////////////////////////////////////////////////////////////////////////
61
CreateProc(SkReadBuffer & buffer)62 SkFlattenable* SkComposePathEffect::CreateProc(SkReadBuffer& buffer) {
63 SkAutoTUnref<SkPathEffect> pe0(buffer.readPathEffect());
64 SkAutoTUnref<SkPathEffect> pe1(buffer.readPathEffect());
65 return SkComposePathEffect::Create(pe0, pe1);
66 }
67
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const68 bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src,
69 SkStrokeRec* rec, const SkRect* cullRect) const {
70 // we may have failed to unflatten these, so we have to check
71 if (!fPE0 || !fPE1) {
72 return false;
73 }
74
75 SkPath tmp;
76 const SkPath* ptr = &src;
77
78 if (fPE1->filterPath(&tmp, src, rec, cullRect)) {
79 ptr = &tmp;
80 }
81 return fPE0->filterPath(dst, *ptr, rec, cullRect);
82 }
83
84 ///////////////////////////////////////////////////////////////////////////////
85
CreateProc(SkReadBuffer & buffer)86 SkFlattenable* SkSumPathEffect::CreateProc(SkReadBuffer& buffer) {
87 SkAutoTUnref<SkPathEffect> pe0(buffer.readPathEffect());
88 SkAutoTUnref<SkPathEffect> pe1(buffer.readPathEffect());
89 return SkSumPathEffect::Create(pe0, pe1);
90 }
91
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const92 bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src,
93 SkStrokeRec* rec, const SkRect* cullRect) const {
94 // use bit-or so that we always call both, even if the first one succeeds
95 return fPE0->filterPath(dst, src, rec, cullRect) |
96 fPE1->filterPath(dst, src, rec, cullRect);
97 }
98