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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 GrClip_DEFINED | 8 #ifndef GrClip_DEFINED |
9 #define GrClip_DEFINED | 9 #define GrClip_DEFINED |
10 | 10 |
11 #include "SkClipStack.h" | 11 #include "SkClipStack.h" |
12 #include "GrSurface.h" | 12 #include "GrSurface.h" |
13 | 13 |
14 struct SkIRect; | 14 struct SkIRect; |
15 | 15 |
16 /** | 16 /** |
17 * GrClip encapsulates the information required to construct the clip | 17 * GrClip encapsulates the information required to construct the clip |
18 * masks. 'A GrClip is either wide open, just an IRect, just a Rect(TODO), or a
full clipstack. | 18 * masks. 'A GrClip is either wide open, just an IRect, just a Rect, or a full c
lipstack. |
19 * If the clip is a clipstack than the origin is used to translate the stack wit
h | 19 * If the clip is a clipstack than the origin is used to translate the stack wit
h |
20 * respect to device coordinates. This allows us to use a clip stack that is | 20 * respect to device coordinates. This allows us to use a clip stack that is |
21 * specified for a root device with a layer device that is restricted to a subse
t | 21 * specified for a root device with a layer device that is restricted to a subse
t |
22 * of the original canvas. For other clip types the origin will always be (0,0). | 22 * of the original canvas. For other clip types the origin will always be (0,0). |
23 * | 23 * |
24 * NOTE: GrClip *must* point to a const clipstack | 24 * NOTE: GrClip *must* point to a const clipstack |
25 */ | 25 */ |
26 class GrClip : SkNoncopyable { | 26 class GrClip : SkNoncopyable { |
27 public: | 27 public: |
28 GrClip() : fClipType(kWideOpen_ClipType) { | 28 GrClip() : fClipType(kWideOpen_ClipType) { |
29 fOrigin.setZero(); | 29 fOrigin.setZero(); |
30 } | 30 } |
| 31 |
31 GrClip(const SkIRect& rect) : fClipType(kIRect_ClipType) { | 32 GrClip(const SkIRect& rect) : fClipType(kIRect_ClipType) { |
32 fOrigin.setZero(); | 33 fOrigin.setZero(); |
33 fClip.fIRect = rect; | 34 fClip.fIRect = rect; |
34 } | 35 } |
| 36 |
| 37 GrClip(const SkRect& rect) : fClipType(kRect_ClipType) { |
| 38 fOrigin.setZero(); |
| 39 fClip.fRect = rect; |
| 40 } |
| 41 |
35 ~GrClip() { this->reset(); } | 42 ~GrClip() { this->reset(); } |
36 | 43 |
37 const GrClip& operator=(const GrClip& other) { | 44 const GrClip& operator=(const GrClip& other) { |
38 this->reset(); | 45 this->reset(); |
39 fClipType = other.fClipType; | 46 fClipType = other.fClipType; |
40 switch (other.fClipType) { | 47 switch (other.fClipType) { |
41 default: | |
42 SkFAIL("Incomplete Switch\n"); | |
43 case kWideOpen_ClipType: | 48 case kWideOpen_ClipType: |
44 fOrigin.setZero(); | 49 fOrigin.setZero(); |
45 break; | 50 break; |
46 case kClipStack_ClipType: | 51 case kClipStack_ClipType: |
47 fClip.fStack = SkRef(other.clipStack()); | 52 fClip.fStack = SkRef(other.clipStack()); |
48 fOrigin = other.origin(); | 53 fOrigin = other.origin(); |
49 break; | 54 break; |
50 case kIRect_ClipType: | 55 case kIRect_ClipType: |
51 fClip.fIRect = other.irect(); | 56 fClip.fIRect = other.irect(); |
52 fOrigin.setZero(); | 57 fOrigin.setZero(); |
53 break; | 58 break; |
| 59 case kRect_ClipType: |
| 60 fClip.fRect = other.rect(); |
| 61 fOrigin.setZero(); |
| 62 break; |
54 } | 63 } |
55 return *this; | 64 return *this; |
56 } | 65 } |
57 | 66 |
58 bool operator==(const GrClip& other) const { | 67 bool operator==(const GrClip& other) const { |
59 if (this->clipType() != other.clipType()) { | 68 if (this->clipType() != other.clipType()) { |
60 return false; | 69 return false; |
61 } | 70 } |
62 | 71 |
63 switch (fClipType) { | 72 switch (fClipType) { |
64 default: | |
65 SkFAIL("Incomplete Switch\n"); | |
66 return false; | |
67 case kWideOpen_ClipType: | 73 case kWideOpen_ClipType: |
68 return true; | 74 return true; |
69 case kClipStack_ClipType: | 75 case kClipStack_ClipType: |
70 if (this->origin() != other.origin()) { | 76 if (this->origin() != other.origin()) { |
71 return false; | 77 return false; |
72 } | 78 } |
73 | 79 |
74 if (this->clipStack() && other.clipStack()) { | 80 if (this->clipStack() && other.clipStack()) { |
75 return *this->clipStack() == *other.clipStack(); | 81 return *this->clipStack() == *other.clipStack(); |
76 } else { | 82 } else { |
77 return this->clipStack() == other.clipStack(); | 83 return this->clipStack() == other.clipStack(); |
78 } | 84 } |
79 break; | 85 break; |
80 case kIRect_ClipType: | 86 case kIRect_ClipType: |
81 return this->irect() == other.irect(); | 87 return this->irect() == other.irect(); |
82 break; | 88 break; |
| 89 case kRect_ClipType: |
| 90 return this->rect() == other.rect(); |
| 91 break; |
83 } | 92 } |
84 } | 93 } |
85 | 94 |
86 bool operator!=(const GrClip& other) const { | 95 bool operator!=(const GrClip& other) const { |
87 return !(*this == other); | 96 return !(*this == other); |
88 } | 97 } |
89 | 98 |
90 const SkClipStack* clipStack() const { | 99 const SkClipStack* clipStack() const { |
91 SkASSERT(kClipStack_ClipType == fClipType); | 100 SkASSERT(kClipStack_ClipType == fClipType); |
92 return fClip.fStack; | 101 return fClip.fStack; |
(...skipping 13 matching lines...) Expand all Loading... |
106 fOrigin.setZero(); | 115 fOrigin.setZero(); |
107 } | 116 } |
108 } | 117 } |
109 } | 118 } |
110 | 119 |
111 const SkIRect& irect() const { | 120 const SkIRect& irect() const { |
112 SkASSERT(kIRect_ClipType == fClipType); | 121 SkASSERT(kIRect_ClipType == fClipType); |
113 return fClip.fIRect; | 122 return fClip.fIRect; |
114 } | 123 } |
115 | 124 |
| 125 const SkRect& rect() const { |
| 126 SkASSERT(kRect_ClipType == fClipType); |
| 127 return fClip.fRect; |
| 128 } |
| 129 |
116 void reset() { | 130 void reset() { |
117 if (kClipStack_ClipType == fClipType) { | 131 if (kClipStack_ClipType == fClipType) { |
118 fClip.fStack->unref(); | 132 fClip.fStack->unref(); |
119 fClip.fStack = NULL; | 133 fClip.fStack = NULL; |
120 } | 134 } |
121 fClipType = kWideOpen_ClipType; | 135 fClipType = kWideOpen_ClipType; |
122 fOrigin.setZero(); | 136 fOrigin.setZero(); |
123 } | 137 } |
124 | 138 |
125 // We support this for all cliptypes to simplify the logic a bit in clip mas
k manager. | 139 // We support this for all cliptypes to simplify the logic a bit in clip mas
k manager. |
126 // non clipstack clip types MUST have a (0,0) origin | 140 // non clipstack clip types MUST have a (0,0) origin |
127 const SkIPoint& origin() const { | 141 const SkIPoint& origin() const { |
128 SkASSERT(fClipType == kClipStack_ClipType || (fOrigin.fX == 0 && fOrigin
.fY == 0)); | 142 SkASSERT(fClipType == kClipStack_ClipType || (fOrigin.fX == 0 && fOrigin
.fY == 0)); |
129 return fOrigin; | 143 return fOrigin; |
130 } | 144 } |
131 | 145 |
132 bool isWideOpen(const SkRect& rect) const { | 146 bool isWideOpen(const SkRect& rect) const { |
133 return (kWideOpen_ClipType == fClipType) || | 147 return (kWideOpen_ClipType == fClipType) || |
134 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()) || | 148 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()) || |
135 (kIRect_ClipType == fClipType && this->irect().contains(rect)); | 149 (kIRect_ClipType == fClipType && this->irect().contains(rect)) || |
| 150 (kRect_ClipType == fClipType && this->rect().contains(rect)); |
136 } | 151 } |
137 | 152 |
138 bool isWideOpen(const SkIRect& rect) const { | 153 bool isWideOpen(const SkIRect& rect) const { |
139 return (kWideOpen_ClipType == fClipType) || | 154 return (kWideOpen_ClipType == fClipType) || |
140 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()) || | 155 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()) || |
141 (kIRect_ClipType == fClipType && this->irect().contains(rect)); | 156 (kIRect_ClipType == fClipType && this->irect().contains(rect)) || |
| 157 (kRect_ClipType == fClipType && this->rect().contains(rect)); |
142 } | 158 } |
143 | 159 |
144 bool isWideOpen() const { | 160 bool isWideOpen() const { |
145 return (kWideOpen_ClipType == fClipType) || | 161 return (kWideOpen_ClipType == fClipType) || |
146 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()); | 162 (kClipStack_ClipType == fClipType && this->clipStack()->isWideOpe
n()); |
147 } | 163 } |
148 | 164 |
| 165 bool quickContains(const SkRect& rect) const { |
| 166 return (kWideOpen_ClipType == fClipType) || |
| 167 (kClipStack_ClipType == fClipType && this->clipStack()->quickCont
ains(rect)) || |
| 168 (kIRect_ClipType == fClipType && this->irect().contains(rect)) || |
| 169 (kRect_ClipType == fClipType && this->rect().contains(rect)); |
| 170 } |
| 171 |
149 void getConservativeBounds(const GrSurface* surface, | 172 void getConservativeBounds(const GrSurface* surface, |
150 SkIRect* devResult, | 173 SkIRect* devResult, |
151 bool* isIntersectionOfRects = NULL) const { | 174 bool* isIntersectionOfRects = NULL) const { |
152 this->getConservativeBounds(surface->width(), surface->height(), | 175 this->getConservativeBounds(surface->width(), surface->height(), |
153 devResult, isIntersectionOfRects); | 176 devResult, isIntersectionOfRects); |
154 } | 177 } |
155 | 178 |
156 void getConservativeBounds(int width, int height, | 179 void getConservativeBounds(int width, int height, |
157 SkIRect* devResult, | 180 SkIRect* devResult, |
158 bool* isIntersectionOfRects = NULL) const; | 181 bool* isIntersectionOfRects = NULL) const; |
159 | 182 |
160 static const GrClip& WideOpen(); | 183 static const GrClip& WideOpen(); |
161 | 184 |
162 enum ClipType { | 185 enum ClipType { |
163 kClipStack_ClipType, | 186 kClipStack_ClipType, |
164 kWideOpen_ClipType, | 187 kWideOpen_ClipType, |
165 kIRect_ClipType, | 188 kIRect_ClipType, |
| 189 kRect_ClipType, |
166 }; | 190 }; |
167 | 191 |
168 ClipType clipType() const { return fClipType; } | 192 ClipType clipType() const { return fClipType; } |
169 | 193 |
170 private: | 194 private: |
171 union Clip { | 195 union Clip { |
172 const SkClipStack* fStack; | 196 const SkClipStack* fStack; |
| 197 SkRect fRect; |
173 SkIRect fIRect; | 198 SkIRect fIRect; |
174 } fClip; | 199 } fClip; |
175 | 200 |
176 SkIPoint fOrigin; | 201 SkIPoint fOrigin; |
177 ClipType fClipType; | 202 ClipType fClipType; |
178 }; | 203 }; |
179 | 204 |
180 #endif | 205 #endif |
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