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LibWeb: Clamp grayscale, invert, filter and opacity filter values to 1

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Tim Ledbetter 2025-04-04 13:28:48 +01:00 • committed by Sam Atkins
parent e5f21b2f9c
commit e73438e82c
Notes: github-actions[bot] 2025-04-04 16:13:46 +00:00
3 changed files with 18 additions and 12 deletions
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6
Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
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@ -4432,6 +4432,12 @@ RefPtr<CSSStyleValue> Parser::parse_filter_value_list_value(TokenStream<Componen
return {};
if (amount->is_number() && amount->number().value() < 0)
return {};
if (first_is_one_of(filter_token, FilterToken::Grayscale, FilterToken::Invert, FilterToken::Opacity, FilterToken::Sepia)) {
if (amount->is_percentage() && amount->percentage().value() > 100)
amount = Percentage { 100 };
if (amount->is_number() && amount->number().value() > 1)
amount = Number { Number::Type::Integer, 1.0 };
}
}
return if_no_more_tokens_return(FilterOperation::Color { filter_token_to_operation(filter_token), amount.value_or(Number { Number::Type::Integer, 1 }) });
}