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LibWeb/SVG: Prefer href to xlink:href attribute on images

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Tim Ledbetter 2025-07-10 22:52:47 +01:00 committed by Jelle Raaijmakers
parent 93a35895ae
commit 4dd538e708
5 changed files with 31 additions and 1 deletions
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15
Libraries/LibWeb/SVG/SVGImageElement.cpp
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@ -14,6 +14,7 @@
#include <LibWeb/HTML/PotentialCORSRequest.h>
#include <LibWeb/HTML/SharedResourceRequest.h>
#include <LibWeb/Layout/SVGImageBox.h>
#include <LibWeb/Namespace.h>
#include <LibWeb/Painting/Paintable.h>
#include <LibWeb/SVG/SVGDecodedImageData.h>
@ -60,7 +61,19 @@ void SVGImageElement::attribute_changed(FlyString const& name, Optional<String>
auto parsed_value = AttributeParser::parse_coordinate(value.value_or(String {}));
MUST(height()->base_val()->set_value(parsed_value.value_or(0)));
} else if (name == SVG::AttributeNames::href) {
process_the_url(value);
// https://svgwg.org/svg2-draft/linking.html#XLinkRefAttrs
// For backwards compatibility, elements with an ‘href’ attribute also recognize an ‘href’ attribute in the
// XLink namespace. If the element is in the XLink namespace, it does not recognize an ‘href’ attribute in the
// SVG namespace. When the ‘href’ attribute is present in both the XLink namespace and without a namespace, the
// value of the attribute without a namespace shall be used. The attribute in the XLink namespace shall be ignored.
if (namespace_ == Namespace::XLink && has_attribute_ns({}, name))
return;
auto href = value;
if (!namespace_.has_value() && !href.has_value())
href = get_attribute_ns(SVG::AttributeNames::href, Namespace::XLink);
process_the_url(href);
}
}

3
Tests/LibWeb/Ref/data/50x50-red.svg Normal file
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@ -0,0 +1,3 @@
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 50 50">
<rect fill="red" width="50" height="50"/>
</svg>
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After

Width:  |  Height:  |  Size: 114 B

4
Tests/LibWeb/Ref/expected/svg/image-xlink-href-ref.html Normal file
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@ -0,0 +1,4 @@
<!DOCTYPE html>
<svg>
<rect width="100" height="100" fill="green"></rect>
</svg>

5
Tests/LibWeb/Ref/input/svg/image-prefer-href-to-xlink-href.html Normal file
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@ -0,0 +1,5 @@
<!DOCTYPE html>
<link rel="match" href="../../expected/svg/image-xlink-href-ref.html" />
<svg>
<image id="test" href="../../data/50x50-green.svg" xlink:href="../../data/50x50-red.svg" width="100" height="100" />
</svg>

5
Tests/LibWeb/Ref/input/svg/image-xlink-href.html Normal file
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@ -0,0 +1,5 @@
<!DOCTYPE html>
<link rel="match" href="../../expected/svg/image-xlink-href-ref.html" />
<svg>
<image id="test" xlink:href="../../data/50x50-green.svg" width="100" height="100" />
</svg>