<DataSource ID="RadialGradient" inheritsFrom="Gradient">
    <fields>
        <field  name="cx"  type="integer"/>
        <field  name="cy"  type="integer"/>
        <field  name="r"  type="string"/>
        <field  name="fx" type="string"/>
        <field name="fy" type="string" defaultValue="0"/>
    </fields>
</DataSource>
