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LibWeb: Ignore some collapsible whitespace when building lines

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When collapsing whitespace, we can skip over all-whitespace chunks at
the start of each line, and immediately following fragments that
themselves end in whitespace.
This commit is contained in:
Andreas Kling 2022-01-21 14:15:10 +01:00
parent 766d816db3
commit 9f39ad8929
3 changed files with 6 additions and 0 deletions
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4
Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
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@ -168,6 +168,10 @@ void InlineFormattingContext::generate_line_boxes(LayoutMode layout_mode)
break;
auto& item = item_opt.value();
// Ignore collapsible whitespace chunks at the start of line, and if the last fragment already ends in whitespace.
if (item.is_collapsible_whitespace && containing_block().line_boxes().last().is_empty_or_ends_in_whitespace())
continue;
switch (item.type) {
case InlineLevelIterator::Item::Type::ForcedBreak:
line_builder.break_line();