Draws the backgroud for a particular scene within the charts.
        
        :param      scene   | <XChartScene>
                    painter | <QPainter>
                    rect    | <QRectF>

def _drawForeground(self, scene, painter, rect):
        """
        Draws the backgroud for a particular scene within the charts.
        
        :param      scene   | <XChartScene>
                    painter | <QPainter>
                    rect    | <QRectF>
        """
        rect = scene.sceneRect()
        if scene == self.uiChartVIEW.scene():
            self.renderer().drawForeground(painter,
                                           rect,
                                           self.showGrid(),
                                           self.showColumns(),
                                           self.showRows())