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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkPathEffect_DEFINED | 10 #ifndef SkPathEffect_DEFINED |
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21 | 21 |
22 /** \class SkPathEffect | 22 /** \class SkPathEffect |
23 | 23 |
24 SkPathEffect is the base class for objects in the SkPaint that affect | 24 SkPathEffect is the base class for objects in the SkPaint that affect |
25 the geometry of a drawing primitive before it is transformed by the | 25 the geometry of a drawing primitive before it is transformed by the |
26 canvas' matrix and drawn. | 26 canvas' matrix and drawn. |
27 | 27 |
28 Dashing is implemented as a subclass of SkPathEffect. | 28 Dashing is implemented as a subclass of SkPathEffect. |
29 */ | 29 */ |
30 class SK_API SkPathEffect : public SkFlattenable { | 30 class SK_API SkPathEffect : public SkFlattenable { |
| 31 typedef SkFlattenable INHERITED; |
| 32 |
31 public: | 33 public: |
32 SK_DECLARE_INST_COUNT(SkPathEffect) | 34 SK_DECLARE_INST_COUNT(SkPathEffect) |
33 | 35 |
34 SkPathEffect() {} | 36 SkPathEffect() {} |
35 | 37 |
36 /** | 38 /** |
37 * Given a src path (input) and a stroke-rec (input and output), apply | 39 * Given a src path (input) and a stroke-rec (input and output), apply |
38 * this effect to the src path, returning the new path in dst, and return | 40 * this effect to the src path, returning the new path in dst, and return |
39 * true. If this effect cannot be applied, return false and ignore dst | 41 * true. If this effect cannot be applied, return false and ignore dst |
40 * and stroke-rec. | 42 * and stroke-rec. |
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106 const SkStrokeRec&, const SkMatrix&, | 108 const SkStrokeRec&, const SkMatrix&, |
107 const SkRect* cullR) const; | 109 const SkRect* cullR) const; |
108 | 110 |
109 protected: | 111 protected: |
110 SkPathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} | 112 SkPathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} |
111 | 113 |
112 private: | 114 private: |
113 // illegal | 115 // illegal |
114 SkPathEffect(const SkPathEffect&); | 116 SkPathEffect(const SkPathEffect&); |
115 SkPathEffect& operator=(const SkPathEffect&); | 117 SkPathEffect& operator=(const SkPathEffect&); |
116 | |
117 typedef SkFlattenable INHERITED; | |
118 }; | 118 }; |
119 | 119 |
120 /** \class SkPairPathEffect | 120 /** \class SkPairPathEffect |
121 | 121 |
122 Common baseclass for Compose and Sum. This subclass manages two pathEffects, | 122 Common baseclass for Compose and Sum. This subclass manages two pathEffects, |
123 including flattening them. It does nothing in filterPath, and is only useful | 123 including flattening them. It does nothing in filterPath, and is only useful |
124 for managing the lifetimes of its two arguments. | 124 for managing the lifetimes of its two arguments. |
125 */ | 125 */ |
126 class SkPairPathEffect : public SkPathEffect { | 126 class SkPairPathEffect : public SkPathEffect { |
| 127 typedef SkPathEffect INHERITED; |
| 128 |
127 public: | 129 public: |
128 SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1); | 130 SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1); |
129 virtual ~SkPairPathEffect(); | 131 virtual ~SkPairPathEffect(); |
130 | 132 |
131 protected: | 133 protected: |
132 SkPairPathEffect(SkFlattenableReadBuffer&); | 134 SkPairPathEffect(SkFlattenableReadBuffer&); |
133 virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; | 135 virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
134 | 136 |
135 // these are visible to our subclasses | 137 // these are visible to our subclasses |
136 SkPathEffect* fPE0, *fPE1; | 138 SkPathEffect* fPE0, *fPE1; |
137 | |
138 private: | |
139 typedef SkPathEffect INHERITED; | |
140 }; | 139 }; |
141 | 140 |
142 /** \class SkComposePathEffect | 141 /** \class SkComposePathEffect |
143 | 142 |
144 This subclass of SkPathEffect composes its two arguments, to create | 143 This subclass of SkPathEffect composes its two arguments, to create |
145 a compound pathEffect. | 144 a compound pathEffect. |
146 */ | 145 */ |
147 class SkComposePathEffect : public SkPairPathEffect { | 146 class SkComposePathEffect : public SkPairPathEffect { |
| 147 typedef SkPairPathEffect INHERITED; |
| 148 |
148 public: | 149 public: |
149 /** Construct a pathEffect whose effect is to apply first the inner pathEffe
ct | 150 /** Construct a pathEffect whose effect is to apply first the inner pathEffe
ct |
150 and the the outer pathEffect (e.g. outer(inner(path))) | 151 and the the outer pathEffect (e.g. outer(inner(path))) |
151 The reference counts for outer and inner are both incremented in the con
structor, | 152 The reference counts for outer and inner are both incremented in the con
structor, |
152 and decremented in the destructor. | 153 and decremented in the destructor. |
153 */ | 154 */ |
154 SkComposePathEffect(SkPathEffect* outer, SkPathEffect* inner) | 155 SkComposePathEffect(SkPathEffect* outer, SkPathEffect* inner) |
155 : INHERITED(outer, inner) {} | 156 : INHERITED(outer, inner) {} |
156 | 157 |
157 virtual bool filterPath(SkPath* dst, const SkPath& src, | 158 virtual bool filterPath(SkPath* dst, const SkPath& src, |
158 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; | 159 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
159 | 160 |
160 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposePathEffect) | 161 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposePathEffect) |
161 | 162 |
162 protected: | 163 protected: |
163 SkComposePathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} | 164 SkComposePathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} |
164 | 165 |
165 private: | 166 private: |
166 // illegal | 167 // illegal |
167 SkComposePathEffect(const SkComposePathEffect&); | 168 SkComposePathEffect(const SkComposePathEffect&); |
168 SkComposePathEffect& operator=(const SkComposePathEffect&); | 169 SkComposePathEffect& operator=(const SkComposePathEffect&); |
169 | |
170 typedef SkPairPathEffect INHERITED; | |
171 }; | 170 }; |
172 | 171 |
173 /** \class SkSumPathEffect | 172 /** \class SkSumPathEffect |
174 | 173 |
175 This subclass of SkPathEffect applies two pathEffects, one after the other. | 174 This subclass of SkPathEffect applies two pathEffects, one after the other. |
176 Its filterPath() returns true if either of the effects succeeded. | 175 Its filterPath() returns true if either of the effects succeeded. |
177 */ | 176 */ |
178 class SkSumPathEffect : public SkPairPathEffect { | 177 class SkSumPathEffect : public SkPairPathEffect { |
| 178 typedef SkPairPathEffect INHERITED; |
| 179 |
179 public: | 180 public: |
180 /** Construct a pathEffect whose effect is to apply two effects, in sequence
. | 181 /** Construct a pathEffect whose effect is to apply two effects, in sequence
. |
181 (e.g. first(path) + second(path)) | 182 (e.g. first(path) + second(path)) |
182 The reference counts for first and second are both incremented in the co
nstructor, | 183 The reference counts for first and second are both incremented in the co
nstructor, |
183 and decremented in the destructor. | 184 and decremented in the destructor. |
184 */ | 185 */ |
185 SkSumPathEffect(SkPathEffect* first, SkPathEffect* second) | 186 SkSumPathEffect(SkPathEffect* first, SkPathEffect* second) |
186 : INHERITED(first, second) {} | 187 : INHERITED(first, second) {} |
187 | 188 |
188 virtual bool filterPath(SkPath* dst, const SkPath& src, | 189 virtual bool filterPath(SkPath* dst, const SkPath& src, |
189 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; | 190 SkStrokeRec*, const SkRect*) const SK_OVERRIDE; |
190 | 191 |
191 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSumPathEffect) | 192 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSumPathEffect) |
192 | 193 |
193 protected: | 194 protected: |
194 SkSumPathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} | 195 SkSumPathEffect(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} |
195 | 196 |
196 private: | 197 private: |
197 // illegal | 198 // illegal |
198 SkSumPathEffect(const SkSumPathEffect&); | 199 SkSumPathEffect(const SkSumPathEffect&); |
199 SkSumPathEffect& operator=(const SkSumPathEffect&); | 200 SkSumPathEffect& operator=(const SkSumPathEffect&); |
200 | |
201 typedef SkPairPathEffect INHERITED; | |
202 }; | 201 }; |
203 | 202 |
204 #endif | 203 #endif |
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