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LibWeb: Support relative lengths in calc color values

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Gains us ~40 WPT tests.
This commit is contained in:
Callum Law 2025-06-29 17:18:05 +12:00 • committed by Sam Atkins
parent 62d138ebf7
commit 9ab7c5d08d
Notes: github-actions[bot] 2025-07-04 12:20:09 +00:00
17 changed files with 169 additions and 74 deletions
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11
Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
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@ -937,11 +937,20 @@ String CanvasRenderingContext2D::shadow_color() const
void CanvasRenderingContext2D::set_shadow_color(String color)
{
// 1. Let context be this's canvas attribute's value, if that is an element; otherwise null.
auto& context = canvas_element();
// 2. Let parsedValue be the result of parsing the given value with context if non-null.
auto style_value = parse_css_value(CSS::Parser::ParsingParams(), color, CSS::PropertyID::Color);
if (style_value && style_value->has_color()) {
auto parsedValue = style_value->to_color(OptionalNone(), {});
Optional<Layout::NodeWithStyle const&> layout_node;
CSS::CalculationResolutionContext resolution_context;
if (auto node = context.layout_node()) {
layout_node = *node;
resolution_context.length_resolution_context = CSS::Length::ResolutionContext::for_layout_node(*node);
}
auto parsedValue = style_value->to_color(layout_node, resolution_context);
// 4. Set this's shadow color to parsedValue.
drawing_state().shadow_color = parsedValue;