ladybird/Libraries/LibWeb/CSS/CSSMatrixComponent.cpp

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/*
* Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CSSMatrixComponent.h"
#include <LibWeb/Bindings/CSSMatrixComponentPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Geometry/DOMMatrix.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::CSS {
GC_DEFINE_ALLOCATOR(CSSMatrixComponent);
GC::Ref<CSSMatrixComponent> CSSMatrixComponent::create(JS::Realm& realm, Is2D is_2d, GC::Ref<Geometry::DOMMatrix> matrix)
{
return realm.create<CSSMatrixComponent>(realm, is_2d, matrix);
}
// https://drafts.css-houdini.org/css-typed-om-1/#dom-cssmatrixcomponent-cssmatrixcomponent
WebIDL::ExceptionOr<GC::Ref<CSSMatrixComponent>> CSSMatrixComponent::construct_impl(JS::Realm& realm, GC::Ref<Geometry::DOMMatrixReadOnly> matrix, Optional<CSSMatrixComponentOptions> options)
{
// The CSSMatrixComponent(matrix, options) constructor must, when invoked, perform the following steps:
// 1. Let this be a new CSSMatrixComponent object with its matrix internal slot set to matrix.
// NB: Done below.
// 2. If options was passed and has a is2D field, set thiss is2D internal slot to the value of that field.
// 3. Otherwise, set thiss is2D internal slot to the value of matrixs is2D internal slot.
auto is_2d = matrix->is2d() ? Is2D::Yes : Is2D::No;
if (options.has_value() && options->is2d.has_value())
is_2d = options->is2d.value() ? Is2D::Yes : Is2D::No;
auto this_ = CSSMatrixComponent::create(realm, is_2d, Geometry::DOMMatrix::create_from_dom_matrix_read_only(realm, matrix));
// 4. Return this.
return this_;
}
CSSMatrixComponent::CSSMatrixComponent(JS::Realm& realm, Is2D is_2d, GC::Ref<Geometry::DOMMatrix> matrix)
: CSSTransformComponent(realm, is_2d)
, m_matrix(matrix)
{
}
CSSMatrixComponent::~CSSMatrixComponent() = default;
void CSSMatrixComponent::initialize(JS::Realm& realm)
{
WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSMatrixComponent);
Base::initialize(realm);
}
void CSSMatrixComponent::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_matrix);
}
// https://drafts.css-houdini.org/css-typed-om-1/#serialize-a-cssmatrixcomponent
WebIDL::ExceptionOr<Utf16String> CSSMatrixComponent::to_string() const
{
// 1. Return the serialization of thiss matrix internal slot.
// FIXME: This means we ignore our is_2d state. https://github.com/w3c/css-houdini-drafts/issues/1155
return Utf16String::from_utf8(TRY(m_matrix->to_string()));
}
WebIDL::ExceptionOr<GC::Ref<Geometry::DOMMatrix>> CSSMatrixComponent::to_matrix() const
{
// AD-HOC: Not specced, but we already have a matrix so use that.
// https://github.com/w3c/css-houdini-drafts/issues/1153
return matrix();
}
WebIDL::ExceptionOr<void> CSSMatrixComponent::set_matrix(GC::Ref<Geometry::DOMMatrix> matrix)
{
// AD-HOC: Not specced. https://github.com/w3c/css-houdini-drafts/issues/1153
// FIXME: Should this modify is_2d? Or should we modify the matrix's is_2d?
m_matrix = matrix;
return {};
}
}