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LibWeb: Implement SVGLinearGradientElement (<linearGradient>)

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This represents the SVG <linearGradient>. The actual gradient is
converted to a Gfx::PaintStyle for use in SVG fills... There is a little
guesswork in the implementation, but it seems to match Chrome/Firefox.

Note: Still not hooked up to actual painting in this commit.
This commit is contained in:
MacDue 2023-04-22 18:51:00 +01:00 • committed by Andreas Kling
parent 89d3c6d718
commit aa3464466e
6 changed files with 243 additions and 0 deletions
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3
Userland/Libraries/LibWeb/DOM/ElementFactory.cpp
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@ -88,6 +88,7 @@
#include <LibWeb/SVG/SVGForeignObjectElement.h>
#include <LibWeb/SVG/SVGGElement.h>
#include <LibWeb/SVG/SVGLineElement.h>
#include <LibWeb/SVG/SVGLinearGradientElement.h>
#include <LibWeb/SVG/SVGPathElement.h>
#include <LibWeb/SVG/SVGPolygonElement.h>
#include <LibWeb/SVG/SVGPolylineElement.h>
@ -432,6 +433,8 @@ static WebIDL::ExceptionOr<JS::GCPtr<SVG::SVGElement>> create_svg_element(JS::Re
return MUST_OR_THROW_OOM(realm.heap().allocate<SVG::SVGForeignObjectElement>(realm, document, move(qualified_name)));
if (local_name == SVG::TagNames::line)
return MUST_OR_THROW_OOM(realm.heap().allocate<SVG::SVGLineElement>(realm, document, move(qualified_name)));
if (local_name == SVG::TagNames::linearGradient)
return MUST_OR_THROW_OOM(realm.heap().allocate<SVG::SVGLinearGradientElement>(realm, document, move(qualified_name)));
if (local_name == SVG::TagNames::path)
return MUST_OR_THROW_OOM(realm.heap().allocate<SVG::SVGPathElement>(realm, document, move(qualified_name)));
if (local_name == SVG::TagNames::polygon)