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LibWeb: Apply remaining vertical float clearance to next block level box

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Whenever we generate line boxes, we might end up with a residual
vertical float clearance by way of having a `<br>` with `clear: ..` set.
Set the Y offset of the next block level box to place by this vertical
clearance.

Relates to #4058.
This commit is contained in:
Jelle Raaijmakers 2025-03-27 14:59:49 +00:00
commit 15103d172c
Notes: github-actions[bot] 2025-03-27 17:22:53 +00:00
6 changed files with 47 additions and 5 deletions
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11
Libraries/LibWeb/Layout/BlockFormattingContext.cpp
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@ -564,6 +564,10 @@ void BlockFormattingContext::layout_inline_children(BlockContainer const& block_
block_container_state.set_content_width(used_width_px);
block_container_state.set_content_height(context.automatic_content_height());
}
// If we end up with remaining vertical clearance, we should make sure the next block is moved down accordingly.
if (context.vertical_float_clearance() > 0)
m_y_offset_of_current_block_container = context.vertical_float_clearance();
}
CSSPixels BlockFormattingContext::compute_auto_height_for_block_level_element(Box const& box, AvailableSpace const& available_space)
@ -704,9 +708,8 @@ void BlockFormattingContext::layout_block_level_box(Box const& box, BlockContain
&& box.computed_values().height().is_auto();
// NOTE: In quirks mode, the html element's height matches the viewport so it can be treated as definite
if (box_state.has_definite_height() || box_is_html_element_in_quirks_mode) {
if (box_state.has_definite_height() || box_is_html_element_in_quirks_mode)
resolve_used_height_if_treated_as_auto(box, available_space);
}
auto independent_formatting_context = create_independent_formatting_context_if_needed(m_state, m_layout_mode, box);
@ -817,7 +820,9 @@ void BlockFormattingContext::layout_block_level_box(Box const& box, BlockContain
if (!m_margin_state.box_last_in_flow_child_margin_bottom_collapsed) {
m_margin_state.reset();
}
m_y_offset_of_current_block_container = box_state.offset.y() + box_state.content_height() + box_state.border_box_bottom();
auto box_height = box_state.offset.y() + box_state.content_height() + box_state.border_box_bottom();
if (!m_y_offset_of_current_block_container.has_value() || box_height > m_y_offset_of_current_block_container.value())
m_y_offset_of_current_block_container = box_height;
}
m_margin_state.box_last_in_flow_child_margin_bottom_collapsed = false;