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1 /* libs/graphics/sgl/SkPathEffect.cpp | |
2 ** | |
3 ** Copyright 2006, The Android Open Source Project | |
4 ** | |
5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
6 ** you may not use this file except in compliance with the License. | |
7 ** You may obtain a copy of the License at | |
8 ** | |
9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
10 ** | |
11 ** Unless required by applicable law or agreed to in writing, software | |
12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 ** See the License for the specific language governing permissions and | |
15 ** limitations under the License. | |
16 */ | |
17 | |
18 #include "SkPathEffect.h" | |
19 #include "SkPath.h" | |
20 #include "SkBuffer.h" | |
21 | |
22 ////////////////////////////////////////////////////////////////////////////////
// | |
23 | |
24 SkPairPathEffect::SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1) | |
25 : fPE0(pe0), fPE1(pe1) | |
26 { | |
27 SkASSERT(pe0); | |
28 SkASSERT(pe1); | |
29 fPE0->ref(); | |
30 fPE1->ref(); | |
31 } | |
32 | |
33 SkPairPathEffect::~SkPairPathEffect() | |
34 { | |
35 fPE0->unref(); | |
36 fPE1->unref(); | |
37 } | |
38 | |
39 /* | |
40 Format: [oe0-factory][pe1-factory][pe0-size][pe0-data][pe1-data] | |
41 */ | |
42 void SkPairPathEffect::flatten(SkFlattenableWriteBuffer& buffer) | |
43 { | |
44 buffer.writeFlattenable(fPE0); | |
45 buffer.writeFlattenable(fPE1); | |
46 } | |
47 | |
48 SkPairPathEffect::SkPairPathEffect(SkFlattenableReadBuffer& buffer) | |
49 { | |
50 fPE0 = (SkPathEffect*)buffer.readFlattenable(); | |
51 fPE1 = (SkPathEffect*)buffer.readFlattenable(); | |
52 } | |
53 | |
54 ////////////////////////////////////////////////////////////////////////////////
// | |
55 | |
56 bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* w
idth) | |
57 { | |
58 SkPath tmp; | |
59 const SkPath* ptr = &src; | |
60 | |
61 if (fPE1->filterPath(&tmp, src, width)) | |
62 ptr = &tmp; | |
63 return fPE0->filterPath(dst, *ptr, width); | |
64 } | |
65 | |
66 ////////////////////////////////////////////////////////////////////////////////
// | |
67 | |
68 bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width
) | |
69 { | |
70 // use bit-or so that we always call both, even if the first one succeeds | |
71 return fPE0->filterPath(dst, src, width) | fPE1->filterPath(dst, src, width
); | |
72 } | |
73 | |
74 ////////////////////////////////////////////////////////////////////////////////
/ | |
75 | |
76 #include "SkStroke.h" | |
77 | |
78 SkStrokePathEffect::SkStrokePathEffect(const SkPaint& paint) | |
79 : fWidth(paint.getStrokeWidth()), fMiter(paint.getStrokeMiter()), | |
80 fStyle(SkToU8(paint.getStyle())), fJoin(SkToU8(paint.getStrokeJoin())), fC
ap(SkToU8(paint.getStrokeCap())) | |
81 { | |
82 } | |
83 | |
84 SkStrokePathEffect::SkStrokePathEffect(SkScalar width, SkPaint::Style style, SkP
aint::Join join, SkPaint::Cap cap, SkScalar miter) | |
85 : fWidth(width), fMiter(miter), fStyle(SkToU8(style)), fJoin(SkToU8(join)),
fCap(SkToU8(cap)) | |
86 { | |
87 if (miter < 0) // signal they want the default | |
88 fMiter = SK_DefaultMiterLimit; | |
89 } | |
90 | |
91 bool SkStrokePathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* wi
dth) | |
92 { | |
93 if (fWidth < 0 || fStyle == SkPaint::kFill_Style) | |
94 return false; | |
95 | |
96 if (fStyle == SkPaint::kStroke_Style && fWidth == 0) // hairline | |
97 { | |
98 *width = 0; | |
99 return true; | |
100 } | |
101 | |
102 SkStroke stroke; | |
103 | |
104 stroke.setWidth(fWidth); | |
105 stroke.setMiterLimit(fMiter); | |
106 stroke.setJoin((SkPaint::Join)fJoin); | |
107 stroke.setCap((SkPaint::Cap)fCap); | |
108 stroke.setDoFill(fStyle == SkPaint::kStrokeAndFill_Style); | |
109 | |
110 stroke.strokePath(src, dst); | |
111 return true; | |
112 } | |
113 | |
114 SkFlattenable::Factory SkStrokePathEffect::getFactory() | |
115 { | |
116 return CreateProc; | |
117 } | |
118 | |
119 SkFlattenable* SkStrokePathEffect::CreateProc(SkFlattenableReadBuffer& buffer) | |
120 { | |
121 return SkNEW_ARGS(SkStrokePathEffect, (buffer)); | |
122 } | |
123 | |
124 void SkStrokePathEffect::flatten(SkFlattenableWriteBuffer& buffer) | |
125 { | |
126 buffer.writeScalar(fWidth); | |
127 buffer.writeScalar(fMiter); | |
128 buffer.write8(fStyle); | |
129 buffer.write8(fJoin); | |
130 buffer.write8(fCap); | |
131 } | |
132 | |
133 SkStrokePathEffect::SkStrokePathEffect(SkFlattenableReadBuffer& buffer) | |
134 { | |
135 fWidth = buffer.readScalar(); | |
136 fMiter = buffer.readScalar(); | |
137 fStyle = buffer.readU8(); | |
138 fJoin = buffer.readU8(); | |
139 fCap = buffer.readU8(); | |
140 } | |
141 | |
142 | |
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