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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
parent c33be71df9
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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8
Libraries/LibWeb/DOM/Document.cpp
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@ -1675,7 +1675,7 @@ void Document::obtain_theme_color()
auto media = element.attribute(HTML::AttributeNames::media);
if (media.has_value()) {
auto query = parse_media_query(context, media.value());
if (query.is_null() || !window() || !query->evaluate(*window()))
if (query.is_null() || !query->evaluate(*this))
return TraversalDecision::Continue;
}
@ -3467,13 +3467,9 @@ void Document::evaluate_media_queries_and_report_changes()
void Document::evaluate_media_rules()
{
auto window = this->window();
if (!window)
return;
bool any_media_queries_changed_match_state = false;
for_each_active_css_style_sheet([&](CSS::CSSStyleSheet& style_sheet, auto) {
if (style_sheet.evaluate_media_queries(*window))
if (style_sheet.evaluate_media_queries(*this))
any_media_queries_changed_match_state = true;
});