we (web engine): Experimental web browser project to understand the limits of Claude
Fix normalize_children to wrap inline content alongside floats
When a container has only float children and bare inline content (no
in-flow block siblings), normalize_children returned early without
wrapping the inline content in anonymous blocks. This caused the text
to be silently dropped during layout_block_children since compute_layout
is a no-op for TextRun/Inline boxes.
Include floated children in the has_block check so that inline content
gets properly wrapped in anonymous blocks and laid out through the
inline formatting context.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+44
-2
+44
-2
crates/layout/src/lib.rs
+44
-2
crates/layout/src/lib.rs
···
462
462
return children;
463
463
}
464
464
465
-
// Only consider in-flow children for block/inline normalization.
466
-
let has_block = children.iter().any(|c| is_in_flow(c) && is_block_level(c));
465
+
// Consider in-flow block children and floated children as "block-level"
466
+
// for normalization purposes. When floats are present alongside inline
467
+
// content, the inline content must be wrapped in anonymous blocks so that
468
+
// `layout_block_children` can lay it out via its inline formatting context.
469
+
let has_block = children
470
+
.iter()
471
+
.any(|c| (is_in_flow(c) && is_block_level(c)) || is_floated(c));
467
472
if !has_block {
468
473
return children;
469
474
}
···
5428
5433
float_right,
5429
5434
);
5430
5435
}
5436
+
}
5437
+
5438
+
#[test]
5439
+
fn bare_text_alongside_float_is_laid_out() {
5440
+
// When a container has only float children + bare text (no block
5441
+
// siblings), the text should still be wrapped in an anonymous block
5442
+
// and laid out correctly.
5443
+
let mut doc = Document::new();
5444
+
let root = doc.root();
5445
+
let html = doc.create_element("html");
5446
+
let body = doc.create_element("body");
5447
+
let container = doc.create_element("div");
5448
+
let float_elem = doc.create_element("div");
5449
+
let text = doc.create_text("Hello world");
5450
+
doc.append_child(root, html);
5451
+
doc.append_child(html, body);
5452
+
doc.append_child(body, container);
5453
+
doc.append_child(container, float_elem);
5454
+
doc.append_child(container, text);
5455
+
doc.set_attribute(container, "style", "width: 400px;");
5456
+
doc.set_attribute(
5457
+
float_elem,
5458
+
"style",
5459
+
"float: left; width: 100px; height: 50px;",
5460
+
);
5461
+
5462
+
let tree = layout_doc(&doc);
5463
+
let body_box = &tree.root.children[0];
5464
+
let container_box = &body_box.children[0];
5465
+
5466
+
// The text should be wrapped in an anonymous block and produce text lines.
5467
+
let has_text = container_box.children.iter().any(|c| !c.lines.is_empty());
5468
+
assert!(
5469
+
has_text,
5470
+
"bare text alongside a float should be laid out (found {} children, none with text lines)",
5471
+
container_box.children.len(),
5472
+
);
5431
5473
}
5432
5474
}