Bug 161429 center position missing for gantt chart
When designing a gantt chart, it should be possible to display the labels inside the bar, using a new "center" attribute. See how it should like in UI and output in attached screenshot.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/format/popup/series/SeriesLabelSheet.java
GridData gdTXTSeparator = new GridData( GridData.FILL_HORIZONTAL );
		gdTXTSeparator.horizontalSpan = 3;
		txtSeparator.setLayoutData( gdTXTSeparator );
		txtSeparator.addListener( this );
	}
	private Series getSeriesForProcessing( )
	{
		return seriesDefn.getDesignTimeSeries( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
	 */
	public void handleEvent( Event event )
	{
		if ( event.widget.equals( fdcFont ) )
		{
			getSeriesForProcessing( ).getLabel( )
					.getCaption( )
					.setFont( (FontDefinition) ( (Object[]) event.data )[0] );
			getSeriesForProcessing( ).getLabel( )
					.getCaption( )
					.setColor( (ColorDefinition) ( (Object[]) event.data )[1] );
		}
		else if ( event.widget.equals( liacOutline ) )
		{
			switch ( event.type )
			{
				case LineAttributesComposite.STYLE_CHANGED_EVENT :