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1 /* | 1 /* |
2 * Copyright 2008 The Android Open Source Project | 2 * Copyright 2008 The Android Open Source Project |
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 #include "SkCanvas.h" | 8 #include "SkCanvas.h" |
9 #include "SkCanvasPriv.h" | 9 #include "SkCanvasPriv.h" |
10 #include "SkBitmapDevice.h" | 10 #include "SkBitmapDevice.h" |
11 #include "SkColorFilter.h" | |
12 #include "SkDeviceImageFilterProxy.h" | 11 #include "SkDeviceImageFilterProxy.h" |
13 #include "SkDraw.h" | 12 #include "SkDraw.h" |
14 #include "SkDrawable.h" | 13 #include "SkDrawable.h" |
15 #include "SkDrawFilter.h" | 14 #include "SkDrawFilter.h" |
16 #include "SkDrawLooper.h" | 15 #include "SkDrawLooper.h" |
17 #include "SkErrorInternals.h" | 16 #include "SkErrorInternals.h" |
18 #include "SkImage.h" | 17 #include "SkImage.h" |
19 #include "SkMetaData.h" | 18 #include "SkMetaData.h" |
20 #include "SkPathOps.h" | 19 #include "SkPathOps.h" |
21 #include "SkPatchUtils.h" | 20 #include "SkPatchUtils.h" |
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277 SkCanvas* fCanvas; | 276 SkCanvas* fCanvas; |
278 const DeviceCM* fCurrLayer; | 277 const DeviceCM* fCurrLayer; |
279 const SkPaint* fPaint; // May be null. | 278 const SkPaint* fPaint; // May be null. |
280 SkBool8 fSkipEmptyClips; | 279 SkBool8 fSkipEmptyClips; |
281 | 280 |
282 typedef SkDraw INHERITED; | 281 typedef SkDraw INHERITED; |
283 }; | 282 }; |
284 | 283 |
285 ///////////////////////////////////////////////////////////////////////////// | 284 ///////////////////////////////////////////////////////////////////////////// |
286 | 285 |
287 static SkPaint* set_if_needed(SkLazyPaint* lazy, const SkPaint& orig) { | |
288 return lazy->isValid() ? lazy->get() : lazy->set(orig); | |
289 } | |
290 | |
291 /** | |
292 * If the paint has an imagefilter, but it can be simplified to just a colorfil
ter, return that | |
293 * colorfilter, else return NULL. | |
294 */ | |
295 static SkColorFilter* image_to_color_filter(const SkPaint& paint) { | |
296 SkImageFilter* imgf = paint.getImageFilter(); | |
297 if (!imgf) { | |
298 return NULL; | |
299 } | |
300 | |
301 SkColorFilter* imgCF; | |
302 if (!imgf->asAColorFilter(&imgCF)) { | |
303 return NULL; | |
304 } | |
305 | |
306 SkColorFilter* paintCF = paint.getColorFilter(); | |
307 if (NULL == paintCF) { | |
308 // there is no existing paint colorfilter, so we can just return the ima
gefilter's | |
309 return imgCF; | |
310 } | |
311 | |
312 // The paint has both a colorfilter and an imagefilter. | |
313 SkAutoTUnref<SkColorFilter> autoImgCF(imgCF); | |
314 return SkColorFilter::CreateComposeFilter(imgCF, paintCF); | |
315 } | |
316 | |
317 class AutoDrawLooper { | 286 class AutoDrawLooper { |
318 public: | 287 public: |
319 AutoDrawLooper(SkCanvas* canvas, const SkSurfaceProps& props, const SkPaint&
paint, | 288 AutoDrawLooper(SkCanvas* canvas, const SkSurfaceProps& props, const SkPaint&
paint, |
320 bool skipLayerForImageFilter = false, | 289 bool skipLayerForImageFilter = false, |
321 const SkRect* bounds = NULL) : fOrigPaint(paint) { | 290 const SkRect* bounds = NULL) : fOrigPaint(paint) { |
322 fCanvas = canvas; | 291 fCanvas = canvas; |
323 fFilter = canvas->getDrawFilter(); | 292 fFilter = canvas->getDrawFilter(); |
324 fPaint = &fOrigPaint; | 293 fPaint = &fOrigPaint; |
325 fSaveCount = canvas->getSaveCount(); | 294 fSaveCount = canvas->getSaveCount(); |
326 fDoClearImageFilter = false; | 295 fDoClearImageFilter = false; |
327 fDone = false; | 296 fDone = false; |
328 | 297 |
329 SkColorFilter* simplifiedCF = image_to_color_filter(fOrigPaint); | 298 if (!skipLayerForImageFilter && fOrigPaint.getImageFilter()) { |
330 if (simplifiedCF) { | |
331 SkPaint* paint = set_if_needed(&fLazyPaintInit, fOrigPaint); | |
332 paint->setColorFilter(simplifiedCF)->unref(); | |
333 paint->setImageFilter(NULL); | |
334 fPaint = paint; | |
335 } | |
336 | |
337 if (!skipLayerForImageFilter && fPaint->getImageFilter()) { | |
338 SkPaint tmp; | 299 SkPaint tmp; |
339 tmp.setImageFilter(fPaint->getImageFilter()); | 300 tmp.setImageFilter(fOrigPaint.getImageFilter()); |
340 (void)canvas->internalSaveLayer(bounds, &tmp, SkCanvas::kARGB_ClipLa
yer_SaveFlag, | 301 (void)canvas->internalSaveLayer(bounds, &tmp, SkCanvas::kARGB_ClipLa
yer_SaveFlag, |
341 true, SkCanvas::kFullLayer_SaveLayer
Strategy); | 302 true, SkCanvas::kFullLayer_SaveLayer
Strategy); |
342 // we'll clear the imageFilter for the actual draws in next(), so | 303 // we'll clear the imageFilter for the actual draws in next(), so |
343 // it will only be applied during the restore(). | 304 // it will only be applied during the restore(). |
344 fDoClearImageFilter = true; | 305 fDoClearImageFilter = true; |
345 } | 306 } |
346 | 307 |
347 if (SkDrawLooper* looper = paint.getLooper()) { | 308 if (SkDrawLooper* looper = paint.getLooper()) { |
348 void* buffer = fLooperContextAllocator.reserveT<SkDrawLooper::Contex
t>( | 309 void* buffer = fLooperContextAllocator.reserveT<SkDrawLooper::Contex
t>( |
349 looper->contextSize()); | 310 looper->contextSize()); |
350 fLooperContext = looper->createContext(canvas, buffer); | 311 fLooperContext = looper->createContext(canvas, buffer); |
351 fIsSimple = false; | 312 fIsSimple = false; |
352 } else { | 313 } else { |
353 fLooperContext = NULL; | 314 fLooperContext = NULL; |
354 // can we be marked as simple? | 315 // can we be marked as simple? |
355 fIsSimple = !fFilter && !fDoClearImageFilter; | 316 fIsSimple = !fFilter && !fDoClearImageFilter; |
356 } | 317 } |
357 | 318 |
358 uint32_t oldFlags = paint.getFlags(); | 319 uint32_t oldFlags = paint.getFlags(); |
359 fNewPaintFlags = filter_paint_flags(props, oldFlags); | 320 fNewPaintFlags = filter_paint_flags(props, oldFlags); |
360 if (fIsSimple && (fNewPaintFlags != oldFlags)) { | 321 if (fIsSimple && (fNewPaintFlags != oldFlags)) { |
361 SkPaint* paint = set_if_needed(&fLazyPaintInit, fOrigPaint); | 322 SkPaint* paint = fLazyPaint.set(fOrigPaint); |
362 paint->setFlags(fNewPaintFlags); | 323 paint->setFlags(fNewPaintFlags); |
363 fPaint = paint; | 324 fPaint = paint; |
364 // if we're not simple, doNext() will take care of calling setFlags(
) | 325 // if we're not simple, doNext() will take care of calling setFlags(
) |
365 } | 326 } |
366 } | 327 } |
367 | 328 |
368 ~AutoDrawLooper() { | 329 ~AutoDrawLooper() { |
369 if (fDoClearImageFilter) { | 330 if (fDoClearImageFilter) { |
370 fCanvas->internalRestore(); | 331 fCanvas->internalRestore(); |
371 } | 332 } |
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382 return false; | 343 return false; |
383 } else if (fIsSimple) { | 344 } else if (fIsSimple) { |
384 fDone = true; | 345 fDone = true; |
385 return !fPaint->nothingToDraw(); | 346 return !fPaint->nothingToDraw(); |
386 } else { | 347 } else { |
387 return this->doNext(drawType); | 348 return this->doNext(drawType); |
388 } | 349 } |
389 } | 350 } |
390 | 351 |
391 private: | 352 private: |
392 SkLazyPaint fLazyPaintInit, fLazyPaintPerNext; | 353 SkLazyPaint fLazyPaint; |
393 SkCanvas* fCanvas; | 354 SkCanvas* fCanvas; |
394 const SkPaint& fOrigPaint; | 355 const SkPaint& fOrigPaint; |
395 SkDrawFilter* fFilter; | 356 SkDrawFilter* fFilter; |
396 const SkPaint* fPaint; | 357 const SkPaint* fPaint; |
397 int fSaveCount; | 358 int fSaveCount; |
398 uint32_t fNewPaintFlags; | 359 uint32_t fNewPaintFlags; |
399 bool fDoClearImageFilter; | 360 bool fDoClearImageFilter; |
400 bool fDone; | 361 bool fDone; |
401 bool fIsSimple; | 362 bool fIsSimple; |
402 SkDrawLooper::Context* fLooperContext; | 363 SkDrawLooper::Context* fLooperContext; |
403 SkSmallAllocator<1, 32> fLooperContextAllocator; | 364 SkSmallAllocator<1, 32> fLooperContextAllocator; |
404 | 365 |
405 bool doNext(SkDrawFilter::Type drawType); | 366 bool doNext(SkDrawFilter::Type drawType); |
406 }; | 367 }; |
407 | 368 |
408 bool AutoDrawLooper::doNext(SkDrawFilter::Type drawType) { | 369 bool AutoDrawLooper::doNext(SkDrawFilter::Type drawType) { |
409 fPaint = NULL; | 370 fPaint = NULL; |
410 SkASSERT(!fIsSimple); | 371 SkASSERT(!fIsSimple); |
411 SkASSERT(fLooperContext || fFilter || fDoClearImageFilter); | 372 SkASSERT(fLooperContext || fFilter || fDoClearImageFilter); |
412 | 373 |
413 SkPaint* paint = fLazyPaintPerNext.set(fLazyPaintInit.isValid() ? | 374 SkPaint* paint = fLazyPaint.set(fOrigPaint); |
414 *fLazyPaintInit.get() : fOrigPaint); | |
415 paint->setFlags(fNewPaintFlags); | 375 paint->setFlags(fNewPaintFlags); |
416 | 376 |
417 if (fDoClearImageFilter) { | 377 if (fDoClearImageFilter) { |
418 paint->setImageFilter(NULL); | 378 paint->setImageFilter(NULL); |
419 } | 379 } |
420 | 380 |
421 if (fLooperContext && !fLooperContext->next(fCanvas, paint)) { | 381 if (fLooperContext && !fLooperContext->next(fCanvas, paint)) { |
422 fDone = true; | 382 fDone = true; |
423 return false; | 383 return false; |
424 } | 384 } |
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2563 } | 2523 } |
2564 | 2524 |
2565 if (matrix) { | 2525 if (matrix) { |
2566 canvas->concat(*matrix); | 2526 canvas->concat(*matrix); |
2567 } | 2527 } |
2568 } | 2528 } |
2569 | 2529 |
2570 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() { | 2530 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() { |
2571 fCanvas->restoreToCount(fSaveCount); | 2531 fCanvas->restoreToCount(fSaveCount); |
2572 } | 2532 } |
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