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 #ifndef SK_IGNORE_TO_STRING
toString(SkString * str) const53 void SkPairPathEffect::toString(SkString* str) const {
54 str->appendf("first: ");
55 if (fPE0) {
56 fPE0->toString(str);
57 }
58 str->appendf(" second: ");
59 if (fPE1) {
60 fPE1->toString(str);
61 }
62 }
63 #endif
64
65 ///////////////////////////////////////////////////////////////////////////////
66
CreateProc(SkReadBuffer & buffer)67 SkFlattenable* SkComposePathEffect::CreateProc(SkReadBuffer& buffer) {
68 SkAutoTUnref<SkPathEffect> pe0(buffer.readPathEffect());
69 SkAutoTUnref<SkPathEffect> pe1(buffer.readPathEffect());
70 if (pe0 && pe1) {
71 return SkComposePathEffect::Create(pe0, pe1);
72 } else {
73 return nullptr;
74 }
75 }
76
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const77 bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src,
78 SkStrokeRec* rec, const SkRect* cullRect) const {
79 // we may have failed to unflatten these, so we have to check
80 if (!fPE0 || !fPE1) {
81 return false;
82 }
83
84 SkPath tmp;
85 const SkPath* ptr = &src;
86
87 if (fPE1->filterPath(&tmp, src, rec, cullRect)) {
88 ptr = &tmp;
89 }
90 return fPE0->filterPath(dst, *ptr, rec, cullRect);
91 }
92
93
94 #ifndef SK_IGNORE_TO_STRING
toString(SkString * str) const95 void SkComposePathEffect::toString(SkString* str) const {
96 str->appendf("SkComposePathEffect: (");
97 this->INHERITED::toString(str);
98 str->appendf(")");
99 }
100 #endif
101
102 ///////////////////////////////////////////////////////////////////////////////
103
CreateProc(SkReadBuffer & buffer)104 SkFlattenable* SkSumPathEffect::CreateProc(SkReadBuffer& buffer) {
105 SkAutoTUnref<SkPathEffect> pe0(buffer.readPathEffect());
106 SkAutoTUnref<SkPathEffect> pe1(buffer.readPathEffect());
107 if (pe0 && pe1) {
108 return SkSumPathEffect::Create(pe0, pe1);
109 } else {
110 return nullptr;
111 }
112 }
113
filterPath(SkPath * dst,const SkPath & src,SkStrokeRec * rec,const SkRect * cullRect) const114 bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src,
115 SkStrokeRec* rec, const SkRect* cullRect) const {
116 // use bit-or so that we always call both, even if the first one succeeds
117 return fPE0->filterPath(dst, src, rec, cullRect) |
118 fPE1->filterPath(dst, src, rec, cullRect);
119 }
120
121
122 #ifndef SK_IGNORE_TO_STRING
toString(SkString * str) const123 void SkSumPathEffect::toString(SkString* str) const {
124 str->appendf("SkSumPathEffect: (");
125 this->INHERITED::toString(str);
126 str->appendf(")");
127 }
128 #endif
129