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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkRasterClip_DEFINED | 8 #ifndef SkRasterClip_DEFINED |
9 #define SkRasterClip_DEFINED | 9 #define SkRasterClip_DEFINED |
10 | 10 |
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82 bool fIsBW; | 82 bool fIsBW; |
83 // these 2 are caches based on querying the right obj based on fIsBW | 83 // these 2 are caches based on querying the right obj based on fIsBW |
84 bool fIsEmpty; | 84 bool fIsEmpty; |
85 bool fIsRect; | 85 bool fIsRect; |
86 | 86 |
87 bool computeIsEmpty() const { | 87 bool computeIsEmpty() const { |
88 return fIsBW ? fBW.isEmpty() : fAA.isEmpty(); | 88 return fIsBW ? fBW.isEmpty() : fAA.isEmpty(); |
89 } | 89 } |
90 | 90 |
91 bool computeIsRect() const { | 91 bool computeIsRect() const { |
92 return fIsBW ? fBW.isRect() : fAA.isRect(); | 92 return fIsBW ? fBW.isRect() : false; |
93 } | 93 } |
94 | 94 |
95 bool updateCacheAndReturnNonEmpty(bool detectAARect = true) { | 95 bool updateCacheAndReturnNonEmpty() { |
96 fIsEmpty = this->computeIsEmpty(); | 96 fIsEmpty = this->computeIsEmpty(); |
97 | |
98 // detect that our computed AA is really just a (hard-edged) rect | |
99 if (detectAARect && !fIsEmpty && !fIsBW && fAA.isRect()) { | |
100 fBW.setRect(fAA.getBounds()); | |
101 fAA.setEmpty(); // don't need this guy anymore | |
102 fIsBW = true; | |
103 } | |
104 | |
105 fIsRect = this->computeIsRect(); | 97 fIsRect = this->computeIsRect(); |
106 return !fIsEmpty; | 98 return !fIsEmpty; |
107 } | 99 } |
108 | 100 |
109 void convertToAA(); | 101 void convertToAA(); |
110 }; | 102 }; |
111 | 103 |
112 class SkAutoRasterClipValidate : SkNoncopyable { | 104 class SkAutoRasterClipValidate : SkNoncopyable { |
113 public: | 105 public: |
114 SkAutoRasterClipValidate(const SkRasterClip& rc) : fRC(rc) { | 106 SkAutoRasterClipValidate(const SkRasterClip& rc) : fRC(rc) { |
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162 | 154 |
163 private: | 155 private: |
164 SkRegion fBWRgn; | 156 SkRegion fBWRgn; |
165 SkAAClipBlitter fAABlitter; | 157 SkAAClipBlitter fAABlitter; |
166 // what we return | 158 // what we return |
167 const SkRegion* fClipRgn; | 159 const SkRegion* fClipRgn; |
168 SkBlitter* fBlitter; | 160 SkBlitter* fBlitter; |
169 }; | 161 }; |
170 | 162 |
171 #endif | 163 #endif |
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