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LibWeb: Add a table row to the layout tree for buttons

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We were relying on the table fixup algorithm to insert the missing table
row, which fails to do so when we only have an image in the button.
While that might be a problem with the table fixup algorithm, we should
build a correct layout tree explicitly anyway.

Fixes crashes on GitHub.
This commit is contained in:
Andi Gallo 2023-08-24 03:40:01 +00:00 • committed by Andreas Kling
parent 4f563e346d
commit 6175fcdaeb
3 changed files with 40 additions and 1 deletions
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28
Tests/LibWeb/Layout/expected/block-and-inline/button-image-only.txt Normal file
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@ -0,0 +1,28 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x419.203125 children: inline
line 0 width: 430, height: 419.203125, bottom: 419.203125, baseline: 422
frag 0 from BlockContainer start: 0, length: 0, rect: [13,10 420x415.203125]
BlockContainer <button> at (13,10) content-size 420x415.203125 inline-block [BFC] children: inline
line 0 width: 420, height: 415.203125, bottom: 415.203125, baseline: 420
frag 0 from TableWrapper start: 0, length: 0, rect: [13,10 420x420]
TableWrapper <(anonymous)> at (13,10) content-size 420x420 [BFC] children: not-inline
BlockContainer <(anonymous)> at (13,10) content-size 420x420 table-box [TFC] children: not-inline
Box <(anonymous)> at (13,10) content-size 420x420 table-row children: not-inline
BlockContainer <(anonymous)> at (13,10) content-size 420x420 table-cell [BFC] children: inline
line 0 width: 420, height: 420, bottom: 420, baseline: 420
frag 0 from ImageBox start: 0, length: 0, rect: [13,10 420x420]
TextNode <#text>
ImageBox <img> at (13,10) content-size 420x420 children: not-inline
TextNode <#text>
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
PaintableWithLines (BlockContainer<BODY>) [8,8 784x419.203125]
PaintableWithLines (BlockContainer<BUTTON>) [8,8 430x419.203125] overflow: [9,9 428x421]
PaintableWithLines (TableWrapper(anonymous)) [13,10 420x420]
PaintableWithLines (BlockContainer(anonymous)) [13,10 420x420]
PaintableBox (Box(anonymous)) [13,10 420x420]
PaintableWithLines (BlockContainer(anonymous)) [13,10 420x420]
ImagePaintable (ImageBox<IMG>) [13,10 420x420]

5
Tests/LibWeb/Layout/input/block-and-inline/button-image-only.html Normal file
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@ -0,0 +1,5 @@
<button>
<img
src="data:image/jpeg;base64,iVBORw0KGgoAAAANSUhEUgAAAaQAAAGkCAIAAADxLsZiAAAFyklEQVR4nOzWsZGrMBhG0ec3RO7MZVAZZdCWIuLtYceWWN9zGtAXwJ1/G2P8A/h2/1cPAJhB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgIRt2kvXeUx7i197vvbVE97JV/cnzPnqXHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJ27SXnq992ltzXOexegJF3/crzeGyAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5I2FYP4F6u81g9AT7CZQckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZDwGGOs3sBdXOexesL7PV/76gncgssOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IeIwxVm8A+DiXHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkPATAAD//4r+Gr+sA6bNAAAAAElFTkSuQmCC">
<!-- gigi -->
</button>

8
Userland/Libraries/LibWeb/Layout/TreeBuilder.cpp
View file

@ -389,12 +389,17 @@ ErrorOr<void> TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::
static_cast<CSS::MutableComputedValues&>(cell_computed_values).set_display(CSS::Display { CSS::Display::Internal::TableCell });
static_cast<CSS::MutableComputedValues&>(cell_computed_values).set_vertical_align(CSS::VerticalAlign::Middle);
auto row_computed_values = parent.computed_values().clone_inherited_values();
static_cast<CSS::MutableComputedValues&>(row_computed_values).set_display(CSS::Display { CSS::Display::Internal::TableRow });
auto table_wrapper = parent.heap().template allocate_without_realm<BlockContainer>(parent.document(), nullptr, move(table_computed_values));
auto cell_wrapper = parent.heap().template allocate_without_realm<BlockContainer>(parent.document(), nullptr, move(cell_computed_values));
auto row_wrapper = parent.heap().template allocate_without_realm<Box>(parent.document(), nullptr, move(row_computed_values));
cell_wrapper->set_line_height(parent.line_height());
cell_wrapper->set_font(parent.font());
cell_wrapper->set_children_are_inline(parent.children_are_inline());
row_wrapper->set_children_are_inline(false);
Vector<JS::Handle<Node>> sequence;
for (auto child = parent.first_child(); child; child = child->next_sibling()) {
@ -406,7 +411,8 @@ ErrorOr<void> TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::
cell_wrapper->append_child(*node);
}
table_wrapper->append_child(*cell_wrapper);
row_wrapper->append_child(*cell_wrapper);
table_wrapper->append_child(*row_wrapper);
parent.append_child(*table_wrapper);
}