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LibWeb: Add DOMMatrix skewX and skewY

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Bastiaan van der Plaat 2023-09-04 18:22:55 +02:00 • committed by Jelle Raaijmakers
parent b21ca0d04e
commit fc380bf516
8 changed files with 82 additions and 4 deletions
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33
Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -307,6 +308,38 @@ JS::NonnullGCPtr<DOMMatrix> DOMMatrix::translate_self(Optional<double> tx, Optio
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-skewxself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::skew_x_self(double sx)
{
// 1. Post-multiply a skewX transformation on the current matrix by the specified angle sx in degrees. The 2D skewX matrix is described in CSS Transforms with alpha = sx in degrees. [CSS3-TRANSFORMS]
// clang-format off
Gfx::DoubleMatrix4x4 skew_matrix = { 1, tan(sx * M_PI / 180.0), 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1 };
// clang-format on
m_matrix = m_matrix * skew_matrix;
// 3. Return the current matrix.
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-skewyself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::skew_y_self(double sy)
{
// 1. Post-multiply a skewX transformation on the current matrix by the specified angle sy in degrees. The 2D skewY matrix is described in CSS Transforms with beta = sy in degrees. [CSS3-TRANSFORMS]
// clang-format off
Gfx::DoubleMatrix4x4 skew_matrix = { 1, 0, 0, 0,
tan(sy * M_PI / 180.0), 1, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1 };
// clang-format on
m_matrix = m_matrix * skew_matrix;
// 3. Return the current matrix.
return *this;
}
// https://drafts.fxtf.org/geometry/#dom-dommatrix-invertself
JS::NonnullGCPtr<DOMMatrix> DOMMatrix::invert_self()
{

3
Userland/Libraries/LibWeb/Geometry/DOMMatrix.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -50,6 +51,8 @@ public:
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> multiply_self(DOMMatrixInit other = {});
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> pre_multiply_self(DOMMatrixInit other = {});
JS::NonnullGCPtr<DOMMatrix> translate_self(Optional<double> tx, Optional<double> ty, Optional<double> tz);
JS::NonnullGCPtr<DOMMatrix> skew_x_self(double sx = 0);
JS::NonnullGCPtr<DOMMatrix> skew_y_self(double sy = 0);
JS::NonnullGCPtr<DOMMatrix> invert_self();
private:

4
Userland/Libraries/LibWeb/Geometry/DOMMatrix.idl
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@ -44,8 +44,8 @@ interface DOMMatrix : DOMMatrixReadOnly {
// FIXME: DOMMatrix rotateSelf(optional unrestricted double rotX = 0, optional unrestricted double rotY, optional unrestricted double rotZ);
// FIXME: DOMMatrix rotateFromVectorSelf(optional unrestricted double x = 0, optional unrestricted double y = 0);
// FIXME: DOMMatrix rotateAxisAngleSelf(optional unrestricted double x = 0, optional unrestricted double y = 0, optional unrestricted double z = 0, optional unrestricted double angle = 0);
// FIXME: DOMMatrix skewXSelf(optional unrestricted double sx = 0);
// FIXME: DOMMatrix skewYSelf(optional unrestricted double sy = 0);
DOMMatrix skewXSelf(optional unrestricted double sx = 0);
DOMMatrix skewYSelf(optional unrestricted double sy = 0);
DOMMatrix invertSelf();
// FIXME: [Exposed=Window] DOMMatrix setMatrixValue(DOMString transformList);

23
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -250,6 +251,28 @@ JS::NonnullGCPtr<DOMMatrix> DOMMatrixReadOnly::translate(Optional<double> const&
return result->translate_self(tx, ty, tz);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-skewx
JS::NonnullGCPtr<DOMMatrix> DOMMatrixReadOnly::skew_x(double sx) const
{
// 1. Let result be the resulting matrix initialized to the values of the current matrix.
auto result = DOMMatrix::create_from_dom_matrix_read_only(realm(), *this);
// 2. Perform a skewXSelf() transformation on result with the argument sx.
// 3. Return result.
return result->skew_x_self(sx);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-skewy
JS::NonnullGCPtr<DOMMatrix> DOMMatrixReadOnly::skew_y(double sy) const
{
// 1. Let result be the resulting matrix initialized to the values of the current matrix.
auto result = DOMMatrix::create_from_dom_matrix_read_only(realm(), *this);
// 2. Perform a skewYSelf() transformation on result with the argument sy.
// 3. Return result.
return result->skew_y_self(sy);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-multiply
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> DOMMatrixReadOnly::multiply(DOMMatrixInit other)
{

3
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -84,6 +85,8 @@ public:
bool is_identity() const;
JS::NonnullGCPtr<DOMMatrix> translate(Optional<double> const& tx, Optional<double> const& ty, Optional<double> const& tz) const;
JS::NonnullGCPtr<DOMMatrix> skew_x(double sx = 0) const;
JS::NonnullGCPtr<DOMMatrix> skew_y(double sy = 0) const;
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> multiply(DOMMatrixInit other = {});
JS::NonnullGCPtr<DOMMatrix> inverse() const;

4
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl
View file

@ -46,8 +46,8 @@ interface DOMMatrixReadOnly {
// FIXME: [NewObject] DOMMatrix rotate(optional unrestricted double rotX = 0, optional unrestricted double rotY, optional unrestricted double rotZ);
// FIXME: [NewObject] DOMMatrix rotateFromVector(optional unrestricted double x = 0, optional unrestricted double y = 0);
// FIXME: [NewObject] DOMMatrix rotateAxisAngle(optional unrestricted double x = 0, optional unrestricted double y = 0, optional unrestricted double z = 0, optional unrestricted double angle = 0);
// FIXME: [NewObject] DOMMatrix skewX(optional unrestricted double sx = 0);
// FIXME: [NewObject] DOMMatrix skewY(optional unrestricted double sy = 0);
[NewObject] DOMMatrix skewX(optional unrestricted double sx = 0);
[NewObject] DOMMatrix skewY(optional unrestricted double sy = 0);
[NewObject] DOMMatrix multiply(optional DOMMatrixInit other = {});
// FIXME: [NewObject] DOMMatrix flipX();
// FIXME: [NewObject] DOMMatrix flipY();