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LibWeb: Allow transform calculated length properties

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Bastiaan van der Plaat 2025-05-01 12:53:54 +02:00 • committed by Sam Atkins
commit b99f4872d1
Notes: github-actions[bot] 2025-05-02 10:11:11 +00:00
2 changed files with 18 additions and 13 deletions
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23
Libraries/LibWeb/CSS/Transformation.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2020-2022, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2024-2025, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -25,6 +26,13 @@ ErrorOr<Gfx::FloatMatrix4x4> Transformation::to_matrix(Optional<Painting::Painta
context.length_resolution_context = Length::ResolutionContext::for_layout_node(paintable_box->layout_node());
return m_values[index].visit(
[&](CSS::AngleOrCalculated const& value) -> ErrorOr<float> {
if (!value.is_calculated())
return value.value().to_radians();
if (auto resolved = value.resolved(context); resolved.has_value())
return resolved->to_radians();
return Error::from_string_literal("Transform contains non absolute units");
},
[&](CSS::LengthPercentage const& value) -> ErrorOr<float> {
context.percentage_basis = Length::make_px(reference_length);
@ -34,20 +42,17 @@ ErrorOr<Gfx::FloatMatrix4x4> Transformation::to_matrix(Optional<Painting::Painta
if (auto const& length = value.length(); length.is_absolute())
return length.absolute_length_to_px().to_float();
}
return Error::from_string_literal("Transform contains non absolute units");
},
[&](CSS::AngleOrCalculated const& value) -> ErrorOr<float> {
if (auto resolved = value.resolved(context); resolved.has_value())
return resolved->to_radians();
if (!value.is_calculated())
return value.value().to_radians();
if (value.is_calculated() && value.calculated()->resolves_to_length()) {
if (auto const& resolved = value.calculated()->resolve_length(context); resolved->is_absolute())
return resolved->absolute_length_to_px().to_float();
}
return Error::from_string_literal("Transform contains non absolute units");
},
[&](CSS::NumberPercentage const& value) -> ErrorOr<float> {
if (value.is_percentage())
return value.percentage().as_fraction();
if (value.is_number())
return value.number().value();
if (value.is_percentage())
return value.percentage().as_fraction();
if (value.is_calculated()) {
if (value.calculated()->resolves_to_number())
return value.calculated()->resolve_number(context).value();