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1 /* | 1 /* |
2 * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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846 LayoutPoint offset; | 846 LayoutPoint offset; |
847 compositingContainer->convertToLayerCoords(compositingStackingCo
ntext, offset); | 847 compositingContainer->convertToLayerCoords(compositingStackingCo
ntext, offset); |
848 FloatSize offsetFromStackingContainer = toFloatSize(FloatPoint(o
ffset)); | 848 FloatSize offsetFromStackingContainer = toFloatSize(FloatPoint(o
ffset)); |
849 position += offsetFromStackingContainer; | 849 position += offsetFromStackingContainer; |
850 } | 850 } |
851 | 851 |
852 m_overflowControlsAncestorClippingLayer->setPosition(position); | 852 m_overflowControlsAncestorClippingLayer->setPosition(position); |
853 } else { | 853 } else { |
854 // The controls are in the same 2D space as the compositing containe
r, so we can map them into the space of the container. | 854 // The controls are in the same 2D space as the compositing containe
r, so we can map them into the space of the container. |
855 TransformState transformState(TransformState::ApplyTransformDirectio
n, FloatPoint()); | 855 TransformState transformState(TransformState::ApplyTransformDirectio
n, FloatPoint()); |
856 m_owningLayer.layoutObject()->mapLocalToContainer(compositingStackin
gContext->layoutObject(), transformState, ApplyContainerFlip); | 856 m_owningLayer.layoutObject()->mapLocalToAncestor(compositingStacking
Context->layoutObject(), transformState, ApplyContainerFlip); |
857 transformState.flatten(); | 857 transformState.flatten(); |
858 hostLayerPosition = LayoutPoint(transformState.lastPlanarPoint()); | 858 hostLayerPosition = LayoutPoint(transformState.lastPlanarPoint()); |
859 if (PaintLayerScrollableArea* scrollableArea = compositingStackingCo
ntext->scrollableArea()) | 859 if (PaintLayerScrollableArea* scrollableArea = compositingStackingCo
ntext->scrollableArea()) |
860 hostLayerPosition.move(LayoutSize(scrollableArea->adjustedScroll
Offset())); | 860 hostLayerPosition.move(LayoutSize(scrollableArea->adjustedScroll
Offset())); |
861 } | 861 } |
862 } | 862 } |
863 | 863 |
864 // To clip correctly, m_overflowControlsHostLayer should match the border bo
x rect, which is at | 864 // To clip correctly, m_overflowControlsHostLayer should match the border bo
x rect, which is at |
865 // the origin of the LayoutObject. The parent is m_graphicsLayer, so we must
adjust the position | 865 // the origin of the LayoutObject. The parent is m_graphicsLayer, so we must
adjust the position |
866 // by the distance from m_graphicsLayer to the LayoutObject. | 866 // by the distance from m_graphicsLayer to the LayoutObject. |
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2271 | 2271 |
2272 // Start with the bounds of the graphics layer in the space of the anchor La
youtObject. | 2272 // Start with the bounds of the graphics layer in the space of the anchor La
youtObject. |
2273 FloatRect graphicsLayerBoundsInObjectSpace(graphicsLayerBounds); | 2273 FloatRect graphicsLayerBoundsInObjectSpace(graphicsLayerBounds); |
2274 graphicsLayerBoundsInObjectSpace.move(offsetFromAnchorLayoutObject); | 2274 graphicsLayerBoundsInObjectSpace.move(offsetFromAnchorLayoutObject); |
2275 | 2275 |
2276 // Now map the bounds to its visible content rect in screen space, including
applying clips along the way. | 2276 // Now map the bounds to its visible content rect in screen space, including
applying clips along the way. |
2277 LayoutRect visibleContentRect(graphicsLayerBoundsInObjectSpace); | 2277 LayoutRect visibleContentRect(graphicsLayerBoundsInObjectSpace); |
2278 LayoutView* rootView = anchorLayoutObject->view(); | 2278 LayoutView* rootView = anchorLayoutObject->view(); |
2279 while (rootView->frame()->ownerLayoutObject()) | 2279 while (rootView->frame()->ownerLayoutObject()) |
2280 rootView = rootView->frame()->ownerLayoutObject()->view(); | 2280 rootView = rootView->frame()->ownerLayoutObject()->view(); |
2281 anchorLayoutObject->mapToVisibleRectInContainerSpace(rootView, visibleConten
tRect, 0); | 2281 anchorLayoutObject->mapToVisibleRectInAncestorSpace(rootView, visibleContent
Rect, 0); |
2282 visibleContentRect.intersect(LayoutRect(rootView->frameView()->visibleConten
tRect())); | 2282 visibleContentRect.intersect(LayoutRect(rootView->frameView()->visibleConten
tRect())); |
2283 | 2283 |
2284 // Map the visible content rect from screen space to local graphics layer sp
ace. | 2284 // Map the visible content rect from screen space to local graphics layer sp
ace. |
2285 IntRect localInterestRect; | 2285 IntRect localInterestRect; |
2286 // If the visible content rect is empty, then it makes no sense to map it ba
ck since there is nothing to map. | 2286 // If the visible content rect is empty, then it makes no sense to map it ba
ck since there is nothing to map. |
2287 if (!visibleContentRect.isEmpty()) { | 2287 if (!visibleContentRect.isEmpty()) { |
2288 localInterestRect = anchorLayoutObject->absoluteToLocalQuad(FloatRect(vi
sibleContentRect), UseTransforms | TraverseDocumentBoundaries).enclosingBounding
Box(); | 2288 localInterestRect = anchorLayoutObject->absoluteToLocalQuad(FloatRect(vi
sibleContentRect), UseTransforms | TraverseDocumentBoundaries).enclosingBounding
Box(); |
2289 localInterestRect.move(-offsetFromAnchorLayoutObject); | 2289 localInterestRect.move(-offsetFromAnchorLayoutObject); |
2290 } | 2290 } |
2291 // Expand by interest rect padding amount. | 2291 // Expand by interest rect padding amount. |
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2598 } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) { | 2598 } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) { |
2599 name = "Scrolling Block Selection Layer"; | 2599 name = "Scrolling Block Selection Layer"; |
2600 } else { | 2600 } else { |
2601 ASSERT_NOT_REACHED(); | 2601 ASSERT_NOT_REACHED(); |
2602 } | 2602 } |
2603 | 2603 |
2604 return name; | 2604 return name; |
2605 } | 2605 } |
2606 | 2606 |
2607 } // namespace blink | 2607 } // namespace blink |
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