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LibWeb: Parse and propagate extended text-indent property values

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CSS Text 3 gives `text-indent` a couple of optional keywords to control
which lines are affected. This commit parses them, but doesn't yet do
anything with them.
This commit is contained in:
Sam Atkins 2025-11-18 10:53:25 +00:00 • committed by Jelle Raaijmakers
parent eea1d4e1d2
commit c4b9e7eadf
Notes: github-actions[bot] 2025-11-20 15:03:53 +00:00
16 changed files with 199 additions and 9 deletions
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17
Libraries/LibWeb/CSS/Interpolation.cpp
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@ -32,6 +32,7 @@
#include <LibWeb/CSS/StyleValues/RectStyleValue.h>
#include <LibWeb/CSS/StyleValues/StyleValueList.h>
#include <LibWeb/CSS/StyleValues/SuperellipseStyleValue.h>
#include <LibWeb/CSS/StyleValues/TextIndentStyleValue.h>
#include <LibWeb/CSS/StyleValues/TimeStyleValue.h>
#include <LibWeb/CSS/StyleValues/TransformationStyleValue.h>
#include <LibWeb/CSS/Transformation.h>
@ -1877,6 +1878,22 @@ static RefPtr<StyleValue const> interpolate_value_impl(DOM::Element& element, Ca
interpolate_length_or_auto(from_rect.left_edge, to_rect.left_edge, calculation_context, delta),
});
}
case StyleValue::Type::TextIndent: {
auto& from_text_indent = from.as_text_indent();
auto& to_text_indent = to.as_text_indent();
if (from_text_indent.each_line() != to_text_indent.each_line()
|| from_text_indent.hanging() != to_text_indent.hanging())
return {};
auto interpolated_length_percentage = interpolate_value(element, calculation_context, from_text_indent.length_percentage(), to_text_indent.length_percentage(), delta, allow_discrete);
if (!interpolated_length_percentage)
return {};
return TextIndentStyleValue::create(interpolated_length_percentage.release_nonnull(),
from_text_indent.hanging() ? TextIndentStyleValue::Hanging::Yes : TextIndentStyleValue::Hanging::No,
from_text_indent.each_line() ? TextIndentStyleValue::EachLine::Yes : TextIndentStyleValue::EachLine::No);
}
case StyleValue::Type::Superellipse: {
// https://drafts.csswg.org/css-borders-4/#corner-shape-interpolation