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LibWeb: Use document's viewport when resolving lengths in media queries

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Previously we would always use the window's viewport which was incorrect
if we were within an iframe.

This is likely applicable to all uses of
`Length::ResolutionContext::for_window`.
This commit is contained in:
Callum Law 2025-10-07 00:54:19 +13:00 • committed by Sam Atkins
commit 05c336ea4e
Notes: github-actions[bot] 2025-10-07 09:34:36 +00:00
23 changed files with 198 additions and 83 deletions
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3
Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -1814,8 +1814,7 @@ LengthOrCalculated Parser::parse_as_sizes_attribute(DOM::Element const& element,
// If it does not parse correctly, or it does parse correctly but the <media-condition> evaluates to false, continue.
TokenStream token_stream { unparsed_size };
auto media_condition = parse_media_condition(token_stream);
auto const* context_window = window();
if (!media_condition || (context_window && media_condition->evaluate(context_window) == MatchResult::False)) {
if (!media_condition || (m_document && media_condition->evaluate(m_document) == MatchResult::False)) {
continue;
}