Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
{
			return fis;
		}
		else
		{
			return new Object[]{
					fis, imageMap
			};
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#getSize()
	 */
	public Size getSize( )
	{
		if ( cm != null )
		{
			logger.log( ILogger.INFORMATION,
					Messages.getString( "ChartReportItemPresentationImpl.log.getSizeStart" ) ); 
			final Size sz = new Size( );
			sz.setWidth( (float) cm.getBlock( ).getBounds( ).getWidth( ) );
			sz.setHeight( (float) cm.getBlock( ).getBounds( ).getHeight( ) );
			sz.setUnit( Size.UNITS_PT );
			logger.log( ILogger.INFORMATION,
					Messages.getString( "ChartReportItemPresentationImpl.log.getSizeEnd" ) ); 
			return sz;
		}
		return super.getSize( );