LibWeb: Expose SVGCircleElement attributes to JS

Userland/Libraries/LibWeb/SVG/SVGCircleElement.cpp

@@ -70,4 +70,34 @@ Gfx::Path& SVGCircleElement::get_path()
     return m_path.value();
 }
 
+// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCXAttribute
+NonnullRefPtr<SVGAnimatedLength> SVGCircleElement::cx() const
+{
+    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").
+    // FIXME: Create a proper animated value when animations are supported.
+    auto base_length = SVGLength::create(0, m_center_x.value_or(0));
+    auto anim_length = SVGLength::create(0, m_center_x.value_or(0));
+    return SVGAnimatedLength::create(move(base_length), move(anim_length));
+}
+
+// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCYAttribute
+NonnullRefPtr<SVGAnimatedLength> SVGCircleElement::cy() const
+{
+    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").
+    // FIXME: Create a proper animated value when animations are supported.
+    auto base_length = SVGLength::create(0, m_center_y.value_or(0));
+    auto anim_length = SVGLength::create(0, m_center_y.value_or(0));
+    return SVGAnimatedLength::create(move(base_length), move(anim_length));
+}
+
+// https://www.w3.org/TR/SVG11/shapes.html#CircleElementRAttribute
+NonnullRefPtr<SVGAnimatedLength> SVGCircleElement::r() const
+{
+    // FIXME: Populate the unit type when it is parsed (0 here is "unknown").
+    // FIXME: Create a proper animated value when animations are supported.
+    auto base_length = SVGLength::create(0, m_radius.value_or(0));
+    auto anim_length = SVGLength::create(0, m_radius.value_or(0));
+    return SVGAnimatedLength::create(move(base_length), move(anim_length));
+}
+
 }

Userland/Libraries/LibWeb/SVG/SVGCircleElement.h

@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <LibWeb/SVG/SVGAnimatedLength.h>
 #include <LibWeb/SVG/SVGGeometryElement.h>
 
 namespace Web::SVG {
@@ -21,6 +22,10 @@ public:
 
     virtual Gfx::Path& get_path() override;
 
+    NonnullRefPtr<SVGAnimatedLength> cx() const;
+    NonnullRefPtr<SVGAnimatedLength> cy() const;
+    NonnullRefPtr<SVGAnimatedLength> r() const;
+
 private:
     Optional<Gfx::Path> m_path;
 

Userland/Libraries/LibWeb/SVG/SVGCircleElement.idl

@@ -1,8 +1,9 @@
+#import <SVG/SVGAnimatedLength.idl>
 #import <SVG/SVGGeometryElement.idl>
 
 [Exposed=Window]
 interface SVGCircleElement : SVGGeometryElement {
-    // [SameObject] readonly attribute SVGAnimatedLength cx;
-    // [SameObject] readonly attribute SVGAnimatedLength cy;
-    // [SameObject] readonly attribute SVGAnimatedLength r;
+    [SameObject] readonly attribute SVGAnimatedLength cx;
+    [SameObject] readonly attribute SVGAnimatedLength cy;
+    [SameObject] readonly attribute SVGAnimatedLength r;
 };