Bug 315050 [Automation][Regression]Image size is different from golden file when preview as xls
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
int endCoordinate = parentSizeInfo.getEndCoordinate( );
		int[] columnStartCoordinates = calculateColumnCoordinates( columnsInfo,
				startCoordinate, endCoordinate );
		splitColumns( startCoordinate, endCoordinate, columnStartCoordinates );
		return columnStartCoordinates;
	}
	private void createTable( ColumnsInfo tableInfo, IStyle style,
			XlsContainer currentContainer, int[] columnStartCoordinates )
	{
		int leftCordinate = columnStartCoordinates[0];
		int width = columnStartCoordinates[columnStartCoordinates.length - 1]
				- leftCordinate;
		ContainerSizeInfo sizeInfo = new ContainerSizeInfo( leftCordinate,
				width );
		StyleEntry styleEntry = engine.createEntry( sizeInfo, style,
													getParentStyle( ) );
		XlsTable table = new XlsTable( tableInfo, styleEntry,
				sizeInfo, currentContainer );
		tables.push( table );
		addContainer( table );
	}
	protected StyleEntry getParentStyle( )
	{
		return getParentStyle( getCurrentContainer( ) );
	}
	private void splitColumns( int startCoordinate, int endCoordinate,
			int[] columnStartCoordinates )
	{
		int[] scale = axis.getColumnCoordinatesInRange( startCoordinate,
				endCoordinate );