This method is called when a line is about to be drawn in order to get its
background color.
<p>
The following event fields are used:<ul>
<li>event.lineOffset line start offset (input)</li>
<li>event.lineText line text (input)</li>
<li>event.lineBackground line background color (output)</li>
</ul>
@param event the given event
@see LineBackgroundEvent
This method is called when a line is about to be drawn in order to get its background color. <p> The following event fields are used:<ul> <li>event.lineOffset line start offset (input)</li> <li>event.lineText line text (input)</li> <li>event.lineBackground line background color (output)</li> </ul>
@param event the given event @see LineBackgroundEvent