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1 /* | 1 /* |
2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
5 * | 5 * |
6 * Other contributors: | 6 * Other contributors: |
7 * Robert O'Callahan <roc+@cs.cmu.edu> | 7 * Robert O'Callahan <roc+@cs.cmu.edu> |
8 * David Baron <dbaron@fas.harvard.edu> | 8 * David Baron <dbaron@fas.harvard.edu> |
9 * Christian Biesinger <cbiesinger@web.de> | 9 * Christian Biesinger <cbiesinger@web.de> |
10 * Randall Jesup <rjesup@wgate.com> | 10 * Randall Jesup <rjesup@wgate.com> |
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448 } | 448 } |
449 | 449 |
450 void DeprecatedPaintLayer::updatePaginationRecursive(bool needsPaginationUpdate) | 450 void DeprecatedPaintLayer::updatePaginationRecursive(bool needsPaginationUpdate) |
451 { | 451 { |
452 m_enclosingPaginationLayer = 0; | 452 m_enclosingPaginationLayer = 0; |
453 | 453 |
454 if (layoutObject()->isLayoutFlowThread()) | 454 if (layoutObject()->isLayoutFlowThread()) |
455 needsPaginationUpdate = true; | 455 needsPaginationUpdate = true; |
456 | 456 |
457 if (needsPaginationUpdate) | 457 if (needsPaginationUpdate) |
458 updatePagination(); | 458 updatePagination(); |
chrishtr
2015/07/14 20:11:08
I think you can blow away DeprecatedPaintLayer::up
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459 | 459 |
460 for (DeprecatedPaintLayer* child = firstChild(); child; child = child->nextS ibling()) | 460 for (DeprecatedPaintLayer* child = firstChild(); child; child = child->nextS ibling()) |
461 child->updatePaginationRecursive(needsPaginationUpdate); | 461 child->updatePaginationRecursive(needsPaginationUpdate); |
462 } | 462 } |
463 | 463 |
464 void DeprecatedPaintLayer::updatePagination() | 464 void DeprecatedPaintLayer::updatePagination() |
465 { | 465 { |
466 if (!parent()) | 466 if (!parent()) |
467 return; // FIXME: For now the LayoutView can't be paginated. Eventually printing will move to a model where it is though. | 467 return; // FIXME: For now the LayoutView can't be paginated. Eventually printing will move to a model where it is though. |
468 | 468 |
469 // Each paginated layer has to paint on its own. There is no recurring into child layers. Each | 469 // Each paginated layer has to paint on its own. There is no recurring into child layers. Each |
470 // layer has to be checked individually and genuinely know if it is going to have to split | 470 // layer has to be checked individually and genuinely know if it is going to have to split |
471 // itself up when painting only its contents (and not any other descendant l ayers). We track an | 471 // itself up when painting only its contents (and not any other descendant l ayers). We track an |
472 // enclosingPaginationLayer instead of using a simple bit, since we want to be able to get back | 472 // enclosingPaginationLayer instead of using a simple bit, since we want to be able to get back |
473 // to that layer easily. | 473 // to that layer easily. |
474 if (layoutObject()->isLayoutFlowThread()) { | 474 if (layoutObject()->isLayoutFlowThread()) { |
475 m_enclosingPaginationLayer = this; | 475 m_enclosingPaginationLayer = this; |
476 return; | 476 return; |
477 } | 477 } |
478 | 478 |
479 if (!m_stackingNode->isTreatedAsStackingContextForPainting()) { | 479 // Use the layout tree to find our enclosing pagination layer. |
480 // We cannot take the fast path for spanners, as they do not have their nearest ancestor | 480 if (LayoutFlowThread* containingFlowThread = layoutObject()->flowThreadConta iningBlock()) |
481 // pagination layer (flow thread) in their containing block chain. | 481 m_enclosingPaginationLayer = containingFlowThread->layer(); |
chrishtr
2015/07/14 19:57:43
Should there be code that nulls out m_enclosingPag
mstensho (USE GERRIT)
2015/07/14 20:05:31
That shouldn't be necessary, since updatePaginatio
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482 if (!layoutObject()->isColumnSpanAll()) { | |
483 // Content inside a transform is not considered to be paginated, sin ce we simply | |
484 // paint the transform multiple times in each column, so we don't ha ve to use | |
485 // fragments for the transformed content. | |
486 m_enclosingPaginationLayer = parent()->enclosingPaginationLayer(); | |
487 if (m_enclosingPaginationLayer && m_enclosingPaginationLayer->hasTra nsformRelatedProperty()) | |
488 m_enclosingPaginationLayer = 0; | |
489 return; | |
490 } | |
491 } | |
492 | |
493 // Walk up our containing block chain looking for an enclosing layer. Once w e find one, then we | |
494 // just check its pagination status. | |
495 LayoutView* view = layoutObject()->view(); | |
496 LayoutBlock* containingBlock; | |
497 for (containingBlock = layoutObject()->containingBlock(); | |
498 containingBlock && containingBlock != view; | |
499 containingBlock = containingBlock->containingBlock()) { | |
500 if (containingBlock->hasLayer()) { | |
501 // Content inside a transform is not considered to be paginated, sin ce we simply | |
502 // paint the transform multiple times in each column, so we don't ha ve to use | |
503 // fragments for the transformed content. | |
504 m_enclosingPaginationLayer = containingBlock->layer()->enclosingPagi nationLayer(); | |
505 if (m_enclosingPaginationLayer && m_enclosingPaginationLayer->hasTra nsformRelatedProperty()) | |
506 m_enclosingPaginationLayer = 0; | |
507 return; | |
508 } | |
509 } | |
510 } | 482 } |
511 | 483 |
512 void DeprecatedPaintLayer::clearPaginationRecursive() | 484 void DeprecatedPaintLayer::clearPaginationRecursive() |
513 { | 485 { |
514 m_enclosingPaginationLayer = 0; | 486 m_enclosingPaginationLayer = 0; |
515 for (DeprecatedPaintLayer* child = firstChild(); child; child = child->nextS ibling()) | 487 for (DeprecatedPaintLayer* child = firstChild(); child; child = child->nextS ibling()) |
516 child->clearPaginationRecursive(); | 488 child->clearPaginationRecursive(); |
517 } | 489 } |
518 | 490 |
519 LayoutPoint DeprecatedPaintLayer::positionFromPaintInvalidationBacking(const Lay outObject* layoutObject, const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) | 491 LayoutPoint DeprecatedPaintLayer::positionFromPaintInvalidationBacking(const Lay outObject* layoutObject, const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) |
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2741 | 2713 |
2742 void showLayerTree(const blink::LayoutObject* layoutObject) | 2714 void showLayerTree(const blink::LayoutObject* layoutObject) |
2743 { | 2715 { |
2744 if (!layoutObject) { | 2716 if (!layoutObject) { |
2745 fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n"); | 2717 fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n"); |
2746 return; | 2718 return; |
2747 } | 2719 } |
2748 showLayerTree(layoutObject->enclosingLayer()); | 2720 showLayerTree(layoutObject->enclosingLayer()); |
2749 } | 2721 } |
2750 #endif | 2722 #endif |
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