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LibWeb: Add out-of-flow boxes to anonymous wrapper block when possible

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If the previous sibling of an out-of-flow box has been wrapped in an
anonymous block, we now stuff the out-of-flow box into the anonymous
block as well.

Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
This commit is contained in:
Andreas Kling 2023-03-25 15:33:22 +01:00
parent 71bdee2837
commit 8f311c61af
6 changed files with 61 additions and 29 deletions
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12
Userland/Libraries/LibWeb/Layout/TreeBuilder.cpp
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@ -89,12 +89,22 @@ static Layout::Node& insertion_parent_for_block_node(Layout::NodeWithStyle& layo
return layout_parent;
}
bool is_out_of_flow = layout_node.is_absolutely_positioned() || layout_node.is_floating();
if (is_out_of_flow
&& layout_parent.last_child()->is_anonymous()
&& layout_parent.last_child()->children_are_inline()) {
// Block is out-of-flow & previous sibling was wrapped in an anonymous block.
// Join the previous sibling inside the anonymous block.
return *layout_parent.last_child();
}
if (!layout_parent.children_are_inline()) {
// Parent block has block-level children, insert this block into parent.
return layout_parent;
}
if (layout_node.is_absolutely_positioned() || layout_node.is_floating()) {
if (is_out_of_flow) {
// Block is out-of-flow, it can have inline siblings if necessary.
return layout_parent;
}