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| 1 /* | 1 /* |
| 2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 #ifndef SkMatrixClipStateMgr_DEFINED | 7 #ifndef SkMatrixClipStateMgr_DEFINED |
| 8 #define SkMatrixClipStateMgr_DEFINED | 8 #define SkMatrixClipStateMgr_DEFINED |
| 9 | 9 |
| 10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
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| 174 | 174 |
| 175 // The CTM in effect when this clip call was issued | 175 // The CTM in effect when this clip call was issued |
| 176 int fMatrixID; | 176 int fMatrixID; |
| 177 }; | 177 }; |
| 178 | 178 |
| 179 SkTDArray<ClipOp> fClips; | 179 SkTDArray<ClipOp> fClips; |
| 180 | 180 |
| 181 typedef SkNoncopyable INHERITED; | 181 typedef SkNoncopyable INHERITED; |
| 182 }; | 182 }; |
| 183 | 183 |
| 184 MatrixClipState(MatrixClipState* prev, int flags) | 184 MatrixClipState(MatrixClipState* prev) |
| 185 : fPrev(prev) | 185 : fPrev(prev) |
| 186 { | 186 { |
| 187 fHasOpen = false; | 187 fHasOpen = false; |
| 188 | 188 |
| 189 if (NULL == prev) { | 189 if (NULL == prev) { |
| 190 fLayerID = 0; | 190 fLayerID = 0; |
| 191 | 191 |
| 192 fMatrixInfoStorage.reset(); | 192 fMatrixInfoStorage.reset(); |
| 193 fMatrixInfo = &fMatrixInfoStorage; | 193 fMatrixInfo = &fMatrixInfoStorage; |
| 194 fClipInfo = &fClipInfoStorage; // ctor handles init of fClipInf
oStorage | 194 fClipInfo = &fClipInfoStorage; // ctor handles init of fClipInf
oStorage |
| 195 | 195 |
| 196 // The identity/wide-open-clip state is current by default | 196 // The identity/wide-open-clip state is current by default |
| 197 fMCStateID = kIdentityWideOpenStateID; | 197 fMCStateID = kIdentityWideOpenStateID; |
| 198 #ifdef SK_DEBUG | 198 #ifdef SK_DEBUG |
| 199 fExpectedDepth = 1; | 199 fExpectedDepth = 1; |
| 200 #endif | 200 #endif |
| 201 } | 201 } |
| 202 else { | 202 else { |
| 203 fLayerID = prev->fLayerID; | 203 fLayerID = prev->fLayerID; |
| 204 | 204 |
| 205 if (flags & SkCanvas::kMatrix_SaveFlag) { | 205 fMatrixInfoStorage = *prev->fMatrixInfo; |
| 206 fMatrixInfoStorage = *prev->fMatrixInfo; | 206 fMatrixInfo = &fMatrixInfoStorage; |
| 207 fMatrixInfo = &fMatrixInfoStorage; | |
| 208 } else { | |
| 209 fMatrixInfo = prev->fMatrixInfo; | |
| 210 } | |
| 211 | 207 |
| 212 if (flags & SkCanvas::kClip_SaveFlag) { | 208 // We don't copy the ClipOps of the previous clip states |
| 213 // We don't copy the ClipOps of the previous clip states | 209 fClipInfo = &fClipInfoStorage; |
| 214 fClipInfo = &fClipInfoStorage; | |
| 215 } else { | |
| 216 fClipInfo = prev->fClipInfo; | |
| 217 } | |
| 218 | 210 |
| 219 // Initially a new save/saveLayer represents the same MC state | 211 // Initially a new save/saveLayer represents the same MC state |
| 220 // as its predecessor. | 212 // as its predecessor. |
| 221 fMCStateID = prev->fMCStateID; | 213 fMCStateID = prev->fMCStateID; |
| 222 #ifdef SK_DEBUG | 214 #ifdef SK_DEBUG |
| 223 fExpectedDepth = prev->fExpectedDepth; | 215 fExpectedDepth = prev->fExpectedDepth; |
| 224 #endif | 216 #endif |
| 225 } | 217 } |
| 226 | 218 |
| 227 fIsSaveLayer = false; | 219 fIsSaveLayer = false; |
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| 268 fPicRecord = picRecord; | 260 fPicRecord = picRecord; |
| 269 } | 261 } |
| 270 | 262 |
| 271 SkPictureRecord* getPicRecord() { return fPicRecord; } | 263 SkPictureRecord* getPicRecord() { return fPicRecord; } |
| 272 | 264 |
| 273 // TODO: need to override canvas' getSaveCount. Right now we pass the | 265 // TODO: need to override canvas' getSaveCount. Right now we pass the |
| 274 // save* and restore calls on to the base SkCanvas in SkPictureRecord but | 266 // save* and restore calls on to the base SkCanvas in SkPictureRecord but |
| 275 // this duplicates effort. | 267 // this duplicates effort. |
| 276 int getSaveCount() const { return fMatrixClipStack.count(); } | 268 int getSaveCount() const { return fMatrixClipStack.count(); } |
| 277 | 269 |
| 278 int save(SkCanvas::SaveFlags flags); | 270 int save(); |
| 279 | 271 |
| 280 int saveLayer(const SkRect* bounds, const SkPaint* paint, SkCanvas::SaveFlag
s flags); | 272 int saveLayer(const SkRect* bounds, const SkPaint* paint, SkCanvas::SaveFlag
s flags); |
| 281 | 273 |
| 282 bool isDrawingToLayer() const { | 274 bool isDrawingToLayer() const { |
| 283 return fCurMCState->fLayerID > 0; | 275 return fCurMCState->fLayerID > 0; |
| 284 } | 276 } |
| 285 | 277 |
| 286 void restore(); | 278 void restore(); |
| 287 | 279 |
| 288 void translate(SkScalar dx, SkScalar dy) { | 280 void translate(SkScalar dx, SkScalar dy) { |
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| 365 // The MCStateID of the state currently in effect in the byte stream. 0 if n
one. | 357 // The MCStateID of the state currently in effect in the byte stream. 0 if n
one. |
| 366 int32_t fCurOpenStateID; | 358 int32_t fCurOpenStateID; |
| 367 // The skip offsets for the current open state. These are the locations in t
he | 359 // The skip offsets for the current open state. These are the locations in t
he |
| 368 // skp that must be filled in when the current open state is closed. These a
re | 360 // skp that must be filled in when the current open state is closed. These a
re |
| 369 // here rather then distributed across the MatrixClipState's because saveLay
ers | 361 // here rather then distributed across the MatrixClipState's because saveLay
ers |
| 370 // can cause MC states to be nested. | 362 // can cause MC states to be nested. |
| 371 SkTDArray<int32_t> *fSkipOffsets; // TODO: should we store u32 or size_t i
nstead? | 363 SkTDArray<int32_t> *fSkipOffsets; // TODO: should we store u32 or size_t i
nstead? |
| 372 | 364 |
| 373 SkDEBUGCODE(void validate();) | 365 SkDEBUGCODE(void validate();) |
| 374 | 366 |
| 375 int MCStackPush(SkCanvas::SaveFlags flags); | 367 int MCStackPush(); |
| 376 | 368 |
| 377 void addClipOffset(size_t offset) { | 369 void addClipOffset(size_t offset) { |
| 378 SkASSERT(NULL != fSkipOffsets); | 370 SkASSERT(NULL != fSkipOffsets); |
| 379 SkASSERT(kIdentityWideOpenStateID != fCurOpenStateID); | 371 SkASSERT(kIdentityWideOpenStateID != fCurOpenStateID); |
| 380 SkASSERT(fCurMCState->fHasOpen); | 372 SkASSERT(fCurMCState->fHasOpen); |
| 381 SkASSERT(!fCurMCState->fIsSaveLayer); | 373 SkASSERT(!fCurMCState->fIsSaveLayer); |
| 382 | 374 |
| 383 *fSkipOffsets->append() = SkToS32(offset); | 375 *fSkipOffsets->append() = SkToS32(offset); |
| 384 } | 376 } |
| 385 | 377 |
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| 405 #ifdef SK_DEBUG | 397 #ifdef SK_DEBUG |
| 406 int fActualDepth; | 398 int fActualDepth; |
| 407 #endif | 399 #endif |
| 408 | 400 |
| 409 // save layers are nested within a specific MC state. This stack tracks | 401 // save layers are nested within a specific MC state. This stack tracks |
| 410 // the nesting MC state's ID as save layers are pushed and popped. | 402 // the nesting MC state's ID as save layers are pushed and popped. |
| 411 SkTDArray<int> fStateIDStack; | 403 SkTDArray<int> fStateIDStack; |
| 412 }; | 404 }; |
| 413 | 405 |
| 414 #endif | 406 #endif |
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