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LibWeb: Add DOMMatrix toFloat32Array and toFloat64Array

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Bastiaan van der Plaat 2023-09-25 18:44:10 +02:00 committed by Andrew Kaster
parent 7b4b5b735b
commit 2e122b16e4
Notes: sideshowbarker 2024-07-17 02:14:39 +09:00 
Author: https://github.com/bplaat
Commit: https://github.com/SerenityOS/serenity/commit/2e122b16e4
Pull-request: https://github.com/SerenityOS/serenity/pull/21233
Reviewed-by: https://github.com/ADKaster
6 changed files with 59 additions and 2 deletions
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2
Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
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@ -84,6 +84,8 @@ static bool is_javascript_builtin(Type const& type)
// might simply need to add another type here.
static constexpr Array types = {
"ArrayBuffer"sv,
"Float32Array"sv,
"Float64Array"sv,
};
return types.span().contains_slow(type.name());

4
Tests/LibWeb/Text/expected/geometry/dommatrix-to-array.txt Normal file
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@ -0,0 +1,4 @@
1. {"0":10,"1":20,"2":0,"3":0,"4":30,"5":40,"6":0,"7":0,"8":0,"9":0,"10":1,"11":0,"12":50,"13":60,"14":0,"15":1}
2. {"0":10,"1":20,"2":30,"3":40,"4":50,"5":60,"6":70,"7":80,"8":90,"9":100,"10":110,"11":120,"12":130,"13":140,"14":150,"15":160}
3. {"0":10,"1":20,"2":0,"3":0,"4":30,"5":40,"6":0,"7":0,"8":0,"9":0,"10":1,"11":0,"12":50,"13":60,"14":0,"15":1}
4. {"0":10,"1":20,"2":30,"3":40,"4":50,"5":60,"6":70,"7":80,"8":90,"9":100,"10":110,"11":120,"12":130,"13":140,"14":150,"15":160}

21
Tests/LibWeb/Text/input/geometry/dommatrix-to-array.html Normal file
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@ -0,0 +1,21 @@
<script src="../include.js"></script>
<script>
test(() => {
let testCounter = 1;
function testPart(part) {
println(`${testCounter++}. ${JSON.stringify(part())}`);
}
// 1. DOMMatrix to Float32Array
testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).toFloat32Array());
// 2. DOMMatrix to Float32Array
testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160]).toFloat32Array());
// 3. DOMMatrix to Float64Array
testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).toFloat64Array());
// 4. DOMMatrix to Float64Array
testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160]).toFloat64Array());
});
</script>

28
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
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@ -5,6 +5,8 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Geometry/DOMMatrix.h>
#include <LibWeb/Geometry/DOMMatrixReadOnly.h>
@ -453,6 +455,32 @@ JS::NonnullGCPtr<DOMPoint> DOMMatrixReadOnly::transform_point(DOMPointReadOnly c
return DOMPoint::construct_impl(realm(), point_vector.x(), point_vector.y(), point_vector.z(), point_vector.w());
}
// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-tofloat32array
JS::NonnullGCPtr<JS::Float32Array> DOMMatrixReadOnly::to_float32_array() const
{
// Returns the serialized 16 elements m11 to m44 of the current matrix in column-major order as Float32Array.
float elements[16] = { static_cast<float>(m11()), static_cast<float>(m12()), static_cast<float>(m13()), static_cast<float>(m14()),
static_cast<float>(m21()), static_cast<float>(m22()), static_cast<float>(m23()), static_cast<float>(m24()),
static_cast<float>(m31()), static_cast<float>(m32()), static_cast<float>(m33()), static_cast<float>(m34()),
static_cast<float>(m41()), static_cast<float>(m42()), static_cast<float>(m43()), static_cast<float>(m44()) };
auto bytes = MUST(ByteBuffer::copy(elements, sizeof(elements)));
auto array_buffer = JS::ArrayBuffer::create(realm(), move(bytes));
return JS::Float32Array::create(realm(), sizeof(elements) / sizeof(float), array_buffer);
}
// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-tofloat64array
JS::NonnullGCPtr<JS::Float64Array> DOMMatrixReadOnly::to_float64_array() const
{
// Returns the serialized 16 elements m11 to m44 of the current matrix in column-major order as Float64Array.
double elements[16] = { m11(), m12(), m13(), m14(),
m21(), m22(), m23(), m24(),
m31(), m32(), m33(), m34(),
m41(), m42(), m43(), m44() };
auto bytes = MUST(ByteBuffer::copy(elements, sizeof(elements)));
auto array_buffer = JS::ArrayBuffer::create(realm(), move(bytes));
return JS::Float64Array::create(realm(), sizeof(elements) / sizeof(double), array_buffer);
}
// https://drafts.fxtf.org/geometry/#dommatrixreadonly-stringification-behavior
WebIDL::ExceptionOr<String> DOMMatrixReadOnly::to_string() const
{

2
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
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@ -101,6 +101,8 @@ public:
JS::NonnullGCPtr<DOMPoint> transform_point(DOMPointInit const&) const;
JS::NonnullGCPtr<DOMPoint> transform_point(DOMPointReadOnly const&) const;
JS::NonnullGCPtr<JS::Float32Array> to_float32_array() const;
JS::NonnullGCPtr<JS::Float64Array> to_float64_array() const;
WebIDL::ExceptionOr<String> to_string() const;

4
Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl
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@ -54,8 +54,8 @@ interface DOMMatrixReadOnly {
[NewObject] DOMMatrix inverse();
[NewObject] DOMPoint transformPoint(optional DOMPointInit point = {});
// FIXME: [NewObject] Float32Array toFloat32Array();
// FIXME: [NewObject] Float64Array toFloat64Array();
[NewObject] Float32Array toFloat32Array();
[NewObject] Float64Array toFloat64Array();
[Exposed=Window] stringifier;
[Default] object toJSON();