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LibWeb: Throw exception if any canvas radial gradient radius is < 0

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As per the specification:
https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createradialgradient
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MacDue 2023-01-28 00:05:10 +00:00 • committed by Linus Groh
parent 8dc4e05ecf
commit f86b66dc2d
3 changed files with 10 additions and 3 deletions
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9
Userland/Libraries/LibWeb/HTML/CanvasGradient.cpp
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@ -12,8 +12,15 @@
namespace Web::HTML {
JS::NonnullGCPtr<CanvasGradient> CanvasGradient::create_radial(JS::Realm& realm, double x0, double y0, double r0, double x1, double y1, double r1)
// https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-createradialgradient
WebIDL::ExceptionOr<JS::NonnullGCPtr<CanvasGradient>> CanvasGradient::create_radial(JS::Realm& realm, double x0, double y0, double r0, double x1, double y1, double r1)
{
// If either of r0 or r1 are negative, then an "IndexSizeError" DOMException must be thrown.
if (r0 < 0)
return WebIDL::IndexSizeError::create(realm, "The r0 passed is less than 0");
if (r1 < 0)
return WebIDL::IndexSizeError::create(realm, "The r1 passed is less than 0");
auto radial_gradient = Gfx::CanvasRadialGradientPaintStyle::create(Gfx::FloatPoint { x0, y0 }, r0, Gfx::FloatPoint { x1, y1 }, r1);
return realm.heap().allocate<CanvasGradient>(realm, realm, *radial_gradient);
}