Update text rendering.

src/rendering/visual_elements/svg/elements/SvgShapeElements.cpp

@@ -124,6 +124,15 @@ void SvgRectangle::setHeight(double h)
     addAttribute(std::move(height));
 }
 
+void SvgRectangle::setRadius(double radius)
+{
+    auto rx = std::make_unique<XmlAttribute>("rx");
+
+    rx->setValue(std::to_string(radius));
+
+    addAttribute(std::move(rx));
+}
+
 
 SvgPolygon::SvgPolygon()
     : SvgShapeElement("polygon")