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LibWeb: Apply presentational hints for the HTMLHRElement color attribute

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Tim Ledbetter 2025-02-18 07:25:09 +00:00 • committed by Andreas Kling
parent 83c4e22247
commit c217057cfd
Notes: github-actions[bot] 2025-02-18 11:07:44 +00:00
3 changed files with 49 additions and 1 deletions
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21
Libraries/LibWeb/HTML/HTMLHRElement.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2025, Tim Ledbetter <tim.ledbetter@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -7,6 +8,8 @@
#include <LibWeb/Bindings/HTMLHRElementPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/ComputedProperties.h>
#include <LibWeb/CSS/StyleValues/CSSColorValue.h>
#include <LibWeb/CSS/StyleValues/CSSKeywordValue.h>
#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
#include <LibWeb/HTML/HTMLHRElement.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
@ -33,12 +36,28 @@ bool HTMLHRElement::is_presentational_hint(FlyString const& name) const
if (Base::is_presentational_hint(name))
return true;
return first_is_one_of(name, HTML::AttributeNames::width);
return first_is_one_of(name, HTML::AttributeNames::color, HTML::AttributeNames::noshade, HTML::AttributeNames::width);
}
void HTMLHRElement::apply_presentational_hints(GC::Ref<CSS::CascadedProperties> cascaded_properties) const
{
for_each_attribute([&](auto& name, auto& value) {
// https://html.spec.whatwg.org/multipage/rendering.html#the-hr-element-2
if (name == HTML::AttributeNames::color || name == HTML::AttributeNames::noshade) {
cascaded_properties->set_property_from_presentational_hint(CSS::PropertyID::BorderTopStyle, CSS::CSSKeywordValue::create(CSS::Keyword::Solid));
cascaded_properties->set_property_from_presentational_hint(CSS::PropertyID::BorderRightStyle, CSS::CSSKeywordValue::create(CSS::Keyword::Solid));
cascaded_properties->set_property_from_presentational_hint(CSS::PropertyID::BorderBottomStyle, CSS::CSSKeywordValue::create(CSS::Keyword::Solid));
cascaded_properties->set_property_from_presentational_hint(CSS::PropertyID::BorderLeftStyle, CSS::CSSKeywordValue::create(CSS::Keyword::Solid));
}
// https://html.spec.whatwg.org/multipage/rendering.html#the-hr-element-2:attr-hr-color-3
// When an hr element has a color attribute, its value is expected to be parsed using the rules for parsing a legacy color value, and if that does not return failure,
// the user agent is expected to treat the attribute as a presentational hint setting the element's 'color' property to the resulting color.
if (name == HTML::AttributeNames::color) {
if (auto parsed_value = parse_legacy_color_value(value); parsed_value.has_value()) {
cascaded_properties->set_property_from_presentational_hint(CSS::PropertyID::Color, CSS::CSSColorValue::create_from_color(*parsed_value));
}
}
// https://html.spec.whatwg.org/multipage/rendering.html#the-hr-element-2:maps-to-the-dimension-property
if (name == HTML::AttributeNames::width) {
if (auto parsed_value = parse_dimension_value(value)) {