Stowage/ladybird
2
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-12-07 21:59:54 +00:00
Code Issues Projects Releases Packages Wiki Activity

LibWeb: Implement CanvasPattern.setTransform()

Browse source 
This method applies the given transformation matrix to a pattern.
This commit is contained in:
Tim Ledbetter 2025-10-26 19:06:13 +00:00 • committed by Jelle Raaijmakers
parent 9312a9f86f
commit e1ff1e2095
Notes: github-actions[bot] 2025-10-27 23:42:03 +00:00
10 changed files with 87 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

17
Libraries/LibWeb/HTML/CanvasPattern.cpp
View file

@ -75,4 +75,21 @@ void CanvasPattern::initialize(JS::Realm& realm)
Base::initialize(realm);
}
// https://html.spec.whatwg.org/multipage/canvas.html#dom-canvaspattern-settransform
WebIDL::ExceptionOr<void> CanvasPattern::set_transform(Geometry::DOMMatrix2DInit& transform)
{
// 1. Let matrix be the result of creating a DOMMatrix from the 2D dictionary transform.
auto matrix = TRY(Geometry::DOMMatrix::create_from_dom_matrix_2d_init(realm(), transform));
// 2. If one or more of matrix's m11 element, m12 element, m21 element, m22 element, m41 element, or m42 element are infinite or NaN, then return.
if (!isfinite(matrix->m11()) || !isfinite(matrix->m12()) || !isfinite(matrix->m21()) || !isfinite(matrix->m22()) || !isfinite(matrix->m41()) || !isfinite(matrix->m42()))
return {};
// 3. Reset the pattern's transformation matrix to matrix.
Gfx::AffineTransform affine_transform(matrix->a(), matrix->b(), matrix->c(), matrix->d(), matrix->e(), matrix->f());
m_pattern->set_transform(affine_transform);
return {};
}
}

1
Libraries/LibWeb/HTML/CanvasPattern.h
View file

@ -24,6 +24,7 @@ public:
~CanvasPattern();
NonnullRefPtr<Gfx::PaintStyle> to_gfx_paint_style() { return m_pattern; }
WebIDL::ExceptionOr<void> set_transform(Geometry::DOMMatrix2DInit& transform);
private:
CanvasPattern(JS::Realm&, Gfx::CanvasPatternPaintStyle&);

4
Libraries/LibWeb/HTML/CanvasPattern.idl
View file

@ -1,6 +1,8 @@
#import <Geometry/DOMMatrix.idl>
// https://html.spec.whatwg.org/multipage/canvas.html#canvaspattern
[Exposed=(Window,Worker)]
interface CanvasPattern {
// opaque object
[FIXME] undefined setTransform(optional DOMMatrix2DInit transform = {});
undefined setTransform(optional DOMMatrix2DInit transform = {});
};