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LibWeb/CSS: Implement the scrollbar-color property

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This allows the user to set the scrollbar thumb and track colors.
This commit is contained in:
Tim Ledbetter 2025-05-26 22:36:12 +01:00 • committed by Alexander Kalenik
parent 285bc005cb
commit e2d0d8e2b9
Notes: github-actions[bot] 2025-06-01 22:18:57 +00:00
24 changed files with 212 additions and 10 deletions
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31
Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
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@ -48,6 +48,7 @@
#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
#include <LibWeb/CSS/StyleValues/PositionStyleValue.h>
#include <LibWeb/CSS/StyleValues/ResolutionStyleValue.h>
#include <LibWeb/CSS/StyleValues/ScrollbarColorStyleValue.h>
#include <LibWeb/CSS/StyleValues/ScrollbarGutterStyleValue.h>
#include <LibWeb/CSS/StyleValues/ShadowStyleValue.h>
#include <LibWeb/CSS/StyleValues/ShorthandStyleValue.h>
@ -644,6 +645,10 @@ Parser::ParseErrorOr<NonnullRefPtr<CSSStyleValue const>> Parser::parse_css_value
if (auto parsed_value = parse_rotate_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::ScrollbarColor:
if (auto parsed_value = parse_scrollbar_color_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
case PropertyID::ScrollbarGutter:
if (auto parsed_value = parse_scrollbar_gutter_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
@ -4057,6 +4062,32 @@ RefPtr<CSSStyleValue const> Parser::parse_scale_value(TokenStream<ComponentValue
return TransformationStyleValue::create(PropertyID::Scale, TransformFunction::Scale, { maybe_x.release_nonnull(), maybe_y.release_nonnull(), maybe_z.release_nonnull() });
}
// https://drafts.csswg.org/css-scrollbars/#propdef-scrollbar-color
RefPtr<CSSStyleValue const> Parser::parse_scrollbar_color_value(TokenStream<ComponentValue>& tokens)
{
// auto | <color>{2}
if (!tokens.has_next_token())
return nullptr;
if (auto auto_keyword = parse_all_as_single_keyword_value(tokens, Keyword::Auto))
return auto_keyword;
auto transaction = tokens.begin_transaction();
auto thumb_color = parse_color_value(tokens);
if (!thumb_color)
return nullptr;
tokens.discard_whitespace();
auto track_color = parse_color_value(tokens);
if (!track_color)
return nullptr;
tokens.discard_whitespace();
transaction.commit();
return ScrollbarColorStyleValue::create(thumb_color.release_nonnull(), track_color.release_nonnull());
}
// https://drafts.csswg.org/css-overflow/#propdef-scrollbar-gutter
RefPtr<CSSStyleValue const> Parser::parse_scrollbar_gutter_value(TokenStream<ComponentValue>& tokens)
{