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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2000 Dirk Mueller (mueller@kde.org) | 4 * (C) 2000 Dirk Mueller (mueller@kde.org) |
5 * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com) | 5 * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com) |
6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserv ed. | 6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserv ed. |
7 * Copyright (C) 2009 Google Inc. All rights reserved. | 7 * Copyright (C) 2009 Google Inc. All rights reserved. |
8 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmo bile.com/) | 8 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmo bile.com/) |
9 * | 9 * |
10 * This library is free software; you can redistribute it and/or | 10 * This library is free software; you can redistribute it and/or |
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2664 } | 2664 } |
2665 | 2665 |
2666 if (isOutOfFlowPositioned() && parent()->childrenInline()) | 2666 if (isOutOfFlowPositioned() && parent()->childrenInline()) |
2667 parent()->dirtyLinesFromChangedChild(this); | 2667 parent()->dirtyLinesFromChangedChild(this); |
2668 | 2668 |
2669 removeFromLayoutFlowThread(); | 2669 removeFromLayoutFlowThread(); |
2670 | 2670 |
2671 // Update cached boundaries in SVG layoutObjects if a child is removed. | 2671 // Update cached boundaries in SVG layoutObjects if a child is removed. |
2672 if (parent()->isSVG()) | 2672 if (parent()->isSVG()) |
2673 parent()->setNeedsBoundariesUpdate(); | 2673 parent()->setNeedsBoundariesUpdate(); |
2674 | |
2675 clearScrollAnchorIfNeeded(); | |
2676 } | |
2677 | |
2678 void LayoutObject::clearScrollAnchorIfNeeded() const | |
2679 { | |
2680 if (!scrollAnchoringEnabled()) | |
2681 return; | |
2682 | |
2683 PaintLayer* layer = parent()->enclosingLayer(); | |
2684 | |
2685 // Walk up the layer tree to clear any scroll anchors that reference us. | |
2686 // TODO(skobes): Should this be a hash lookup or a data member instead? | |
ojan
2016/02/03 01:23:43
I was hoping this TODO would explicitly point out
| |
2687 while (layer) { | |
2688 if (PaintLayerScrollableArea* scrollableArea = layer->scrollableArea()) { | |
2689 ScrollAnchor& anchor = scrollableArea->scrollAnchor(); | |
2690 if (anchor.anchorObject() == this) | |
2691 anchor.clear(); | |
2692 } | |
2693 layer = layer->parent(); | |
2694 } | |
2695 if (FrameView* view = frameView()) { | |
2696 ScrollAnchor& anchor = view->scrollAnchor(); | |
2697 if (anchor.anchorObject() == this) | |
2698 anchor.clear(); | |
2699 } | |
2674 } | 2700 } |
2675 | 2701 |
2676 void LayoutObject::removeFromLayoutFlowThread() | 2702 void LayoutObject::removeFromLayoutFlowThread() |
2677 { | 2703 { |
2678 if (!isInsideFlowThread()) | 2704 if (!isInsideFlowThread()) |
2679 return; | 2705 return; |
2680 | 2706 |
2681 // Sometimes we remove the element from the flow, but it's not destroyed at that time. | 2707 // Sometimes we remove the element from the flow, but it's not destroyed at that time. |
2682 // It's only until later when we actually destroy it and remove all the chil dren from it. | 2708 // It's only until later when we actually destroy it and remove all the chil dren from it. |
2683 // Currently, that happens for firstLetter elements and list markers. | 2709 // Currently, that happens for firstLetter elements and list markers. |
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3530 ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled()); | 3556 ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled()); |
3531 objectPaintPropertiesMap().set(this, paintProperties); | 3557 objectPaintPropertiesMap().set(this, paintProperties); |
3532 } | 3558 } |
3533 | 3559 |
3534 void LayoutObject::clearObjectPaintProperties() | 3560 void LayoutObject::clearObjectPaintProperties() |
3535 { | 3561 { |
3536 ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled()); | 3562 ASSERT(RuntimeEnabledFeatures::slimmingPaintV2Enabled()); |
3537 objectPaintPropertiesMap().remove(this); | 3563 objectPaintPropertiesMap().remove(this); |
3538 } | 3564 } |
3539 | 3565 |
3566 bool LayoutObject::scrollAnchoringEnabled() const | |
3567 { | |
3568 if (Settings* settings = document().settings()) | |
3569 return settings->scrollAnchoringEnabled(); | |
3570 return false; | |
3571 } | |
3572 | |
3540 } // namespace blink | 3573 } // namespace blink |
3541 | 3574 |
3542 #ifndef NDEBUG | 3575 #ifndef NDEBUG |
3543 | 3576 |
3544 void showTree(const blink::LayoutObject* object) | 3577 void showTree(const blink::LayoutObject* object) |
3545 { | 3578 { |
3546 if (object) | 3579 if (object) |
3547 object->showTreeForThis(); | 3580 object->showTreeForThis(); |
3548 else | 3581 else |
3549 fprintf(stderr, "Cannot showTree. Root is (nil)\n"); | 3582 fprintf(stderr, "Cannot showTree. Root is (nil)\n"); |
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3568 const blink::LayoutObject* root = object1; | 3601 const blink::LayoutObject* root = object1; |
3569 while (root->parent()) | 3602 while (root->parent()) |
3570 root = root->parent(); | 3603 root = root->parent(); |
3571 root->showLayoutTreeAndMark(object1, "*", object2, "-", 0); | 3604 root->showLayoutTreeAndMark(object1, "*", object2, "-", 0); |
3572 } else { | 3605 } else { |
3573 fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n"); | 3606 fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n"); |
3574 } | 3607 } |
3575 } | 3608 } |
3576 | 3609 |
3577 #endif | 3610 #endif |
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