Chromium Code Reviews Chromium Code Reviews
Issue 2414683002:
Make offsetTop/Left handle a relative positioned inline offsetParent correctly. (Closed)
| OLD | NEW |
|---|---|
| 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) 2005 Allan Sandfeld Jensen (kde@carewolf.com) | 4 * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) |
| 5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) | 5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) |
| 6 * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. | 6 * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| 7 * Copyright (C) 2010 Google Inc. All rights reserved. | 7 * Copyright (C) 2010 Google Inc. All rights reserved. |
| 8 * | 8 * |
| 9 * This library is free software; you can redistribute it and/or | 9 * This library is free software; you can redistribute it and/or |
| 10 * modify it under the terms of the GNU Library General Public | 10 * modify it under the terms of the GNU Library General Public |
| (...skipping 972 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
| 983 // compositing inputs. | 983 // compositing inputs. |
| 984 if (!scrollableArea->stickyConstraintsMap().contains(layer())) | 984 if (!scrollableArea->stickyConstraintsMap().contains(layer())) |
| 985 return LayoutSize(); | 985 return LayoutSize(); |
| 986 return LayoutSize( | 986 return LayoutSize( |
| 987 scrollableArea->stickyConstraintsMap().get(layer()).computeStickyOffset( | 987 scrollableArea->stickyConstraintsMap().get(layer()).computeStickyOffset( |
| 988 constrainingRect)); | 988 constrainingRect)); |
| 989 } | 989 } |
| 990 | 990 |
| 991 LayoutPoint LayoutBoxModelObject::adjustedPositionRelativeTo( | 991 LayoutPoint LayoutBoxModelObject::adjustedPositionRelativeTo( |
| 992 const LayoutPoint& startPoint, | 992 const LayoutPoint& startPoint, |
| 993 const Element* element) const { | 993 const Element* offsetParent) const { |
| 994 // If the element is the HTML body element or doesn't have a parent | 994 // If the element is the HTML body element or doesn't have a parent |
| 995 // return 0 and stop this algorithm. | 995 // return 0 and stop this algorithm. |
| 996 if (isBody() || !parent()) | 996 if (isBody() || !parent()) |
| 997 return LayoutPoint(); | 997 return LayoutPoint(); |
| 998 | 998 |
| 999 LayoutPoint referencePoint = startPoint; | 999 LayoutPoint referencePoint = startPoint; |
| 1000 | 1000 |
| 1001 // If the base element is null, return the distance between the canvas origin | 1001 // If the offsetParent is null, return the distance between the canvas origin |
| 1002 // and the left border edge of the element and stop this algorithm. | 1002 // and the left/top border edge of the element and stop this algorithm. |
| 1003 if (!element) | 1003 if (!offsetParent) |
| 1004 return referencePoint; | 1004 return referencePoint; |
| 1005 | 1005 |
| 1006 if (const LayoutBoxModelObject* offsetParent = | 1006 if (const LayoutBoxModelObject* offsetParentObject = |
| 1007 element->layoutBoxModelObject()) { | 1007 offsetParent->layoutBoxModelObject()) { |
| 1008 if (!isOutOfFlowPositioned()) { | 1008 if (!isOutOfFlowPositioned()) { |
| 1009 if (isInFlowPositioned()) | 1009 if (isInFlowPositioned()) |
| 1010 referencePoint.move(offsetForInFlowPosition()); | 1010 referencePoint.move(offsetForInFlowPosition()); |
| 1011 | 1011 |
| 1012 // Note that we may fail to find |offsetParent| while walking the | 1012 // Note that we may fail to find |offsetParent| while walking the |
| 1013 // container chain, if |offsetParent| is an inline split into | 1013 // container chain, if |offsetParent| is an inline split into |
| 1014 // continuations: <body style="display:inline;" id="offsetParent"><div> | 1014 // continuations: <body style="display:inline;" id="offsetParent"><div> |
| 1015 // </div><span id="this"> | 1015 // </div><span id="this"> |
| 1016 // This is why we have to do a nullptr check here. | 1016 // This is why we have to do a nullptr check here. |
| 1017 // offset(Left|Top) is generally broken when offsetParent is inline. | |
| 1018 for (const LayoutObject* current = container(); | 1017 for (const LayoutObject* current = container(); |
| 1019 current && current != offsetParent; current = current->container()) { | 1018 current && current != offsetParentObject; |
| 1019 current = current->container()) { | |
| 1020 // FIXME: What are we supposed to do inside SVG content? | 1020 // FIXME: What are we supposed to do inside SVG content? |
| 1021 referencePoint.move(current->columnOffset(referencePoint)); | 1021 referencePoint.move(current->columnOffset(referencePoint)); |
| 1022 if (current->isBox() && !current->isTableRow()) | 1022 if (current->isBox() && !current->isTableRow()) |
| 1023 referencePoint.moveBy(toLayoutBox(current)->topLeftLocation()); | 1023 referencePoint.moveBy(toLayoutBox(current)->topLeftLocation()); |
| 1024 } | 1024 } |
| 1025 | 1025 |
| 1026 if (offsetParent->isBox() && offsetParent->isBody() && | 1026 if (offsetParentObject->isBox() && offsetParentObject->isBody() && |
| 1027 !offsetParent->isPositioned()) | 1027 !offsetParentObject->isPositioned()) |
| 1028 referencePoint.moveBy(toLayoutBox(offsetParent)->topLeftLocation()); | 1028 referencePoint += toLayoutBox(offsetParentObject)->topLeftLocation(); |
|
atotic
2016/10/25 19:28:58
Why replace moveBy with '+='?
moveBy is used thr
Karl Øygard
2016/10/26 11:27:04
It was just done to conserve line space for cosmet
| |
| 1029 } | 1029 } |
| 1030 if (offsetParent->isBox() && !offsetParent->isBody()) | 1030 |
| 1031 referencePoint.move(-toLayoutBox(offsetParent)->borderLeft(), | 1031 if (offsetParentObject->isLayoutInline()) { |
| 1032 -toLayoutBox(offsetParent)->borderTop()); | 1032 const LayoutInline* inlineParent = toLayoutInline(offsetParentObject); |
|
atotic
2016/10/25 19:28:58
I am not very familiar with this code.
Can you e
Karl Øygard
2016/10/26 11:27:04
This covers the case when offsetParent is an inlin
| |
| 1033 | |
| 1034 referencePoint -= inlineParent->firstLineBoxTopLeft(); | |
| 1035 | |
| 1036 if (isBox() && style()->position() == AbsolutePosition && | |
| 1037 inlineParent->isInFlowPositioned()) { | |
| 1038 referencePoint += | |
| 1039 inlineParent->offsetForInFlowPositionedInline(*toLayoutBox(this)); | |
| 1040 } | |
| 1041 } | |
| 1042 | |
| 1043 if (offsetParentObject->isBox() && !offsetParentObject->isBody()) { | |
| 1044 referencePoint.move(-toLayoutBox(offsetParentObject)->borderLeft(), | |
| 1045 -toLayoutBox(offsetParentObject)->borderTop()); | |
| 1046 } | |
| 1033 } | 1047 } |
| 1034 | 1048 |
| 1035 return referencePoint; | 1049 return referencePoint; |
| 1036 } | 1050 } |
| 1037 | 1051 |
| 1038 LayoutSize LayoutBoxModelObject::offsetForInFlowPosition() const { | 1052 LayoutSize LayoutBoxModelObject::offsetForInFlowPosition() const { |
| 1039 if (isRelPositioned()) | 1053 if (isRelPositioned()) |
| 1040 return relativePositionOffset(); | 1054 return relativePositionOffset(); |
| 1041 | 1055 |
| 1042 if (isStickyPositioned()) | 1056 if (isStickyPositioned()) |
| (...skipping 343 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
| 1386 if (rootElementStyle->hasBackground()) | 1400 if (rootElementStyle->hasBackground()) |
| 1387 return false; | 1401 return false; |
| 1388 | 1402 |
| 1389 if (node() != document().firstBodyElement()) | 1403 if (node() != document().firstBodyElement()) |
| 1390 return false; | 1404 return false; |
| 1391 | 1405 |
| 1392 return true; | 1406 return true; |
| 1393 } | 1407 } |
| 1394 | 1408 |
| 1395 } // namespace blink | 1409 } // namespace blink |
| OLD | NEW |
