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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 
Author: https://github.com/Calme1709
Commit: https://github.com/LadybirdBrowser/ladybird/commit/05c336ea4e0
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6412
Reviewed-by: https://github.com/AtkinsSJ ✅
23 changed files with 198 additions and 83 deletions
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2
Libraries/LibWeb/CSS/StyleSheetList.cpp
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@@ -109,7 +109,7 @@ void StyleSheetList::add_sheet(CSSStyleSheet& sheet)
// NOTE: We evaluate media queries immediately when adding a new sheet.
// This coalesces the full document style invalidations.
// If we don't do this, we invalidate now, and then again when Document updates media rules.
sheet.evaluate_media_queries(as<HTML::Window>(HTML::relevant_global_object(*this)));
sheet.evaluate_media_queries(document());
if (sheet.rules().length() == 0) {
// NOTE: If the added sheet has no rules, we don't have to invalidate anything.