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LibWeb: Add DOMMatrix multiply

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Bastiaan van der Plaat 2023-09-03 12:42:50 +02:00 • committed by Andreas Kling
parent ff1bcc694d
commit 61c063f7b3
8 changed files with 61 additions and 4 deletions
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40
Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
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@ -253,6 +253,46 @@ void DOMMatrix::set_f(double value)
set_m42(value);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-multiplyself
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> DOMMatrix::multiply_self(DOMMatrixInit other)
{
// 1. Let otherObject be the result of invoking create a DOMMatrix from the dictionary other.
auto maybe_other_object = DOMMatrix::create_from_dom_matrix_2d_init(realm(), other);
if (maybe_other_object.is_exception())
return maybe_other_object.exception();
auto other_object = maybe_other_object.release_value();
// 2. The otherObject matrix gets post-multiplied to the current matrix.
m_matrix = m_matrix * other_object->m_matrix;
// 3. If is 2D of otherObject is false, set is 2D of the current matrix to false.
if (!other_object->m_is_2d)
m_is_2d = false;
// 4. Return the current matrix.
return JS::NonnullGCPtr<DOMMatrix>(*this);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-premultiplyself
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> DOMMatrix::pre_multiply_self(DOMMatrixInit other)
{
// 1. Let otherObject be the result of invoking create a DOMMatrix from the dictionary other.
auto maybe_other_object = DOMMatrix::create_from_dom_matrix_2d_init(realm(), other);
if (maybe_other_object.is_exception())
return maybe_other_object.exception();
auto other_object = maybe_other_object.release_value();
// 2. The otherObject matrix gets pre-multiplied to the current matrix.
m_matrix = other_object->m_matrix * m_matrix;
// 3. If is 2D of otherObject is false, set is 2D of the current matrix to false.
if (!other_object->m_is_2d)
m_is_2d = false;
// 4. Return the current matrix.
return JS::NonnullGCPtr<DOMMatrix>(*this);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-invertself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::invert_self()
{