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
colSpan );
			int diagonalNumber = cellcontent.getDiagonalNumber( );
			StyleEntry cellStyleEntry = null;
			if ( diagonalNumber != 0 )
			{
				String diagonalColor = cellcontent.getDiagonalColor( );
				String diagonalStyle = cellcontent.getDiagonalStyle( );
				int diagonalWidth = PropertyUtil.getDimensionValue(
						cellcontent, cellcontent.getDiagonalWidth( ),
						cellSizeInfo.getWidth( ) );
				cellStyleEntry = engine.createCellEntry( cellSizeInfo, style,
						diagonalColor, diagonalStyle, diagonalWidth,
						getParentStyle( ) );
			}
			else
			{
				cellStyleEntry = engine.createEntry( cellSizeInfo, style,
						getParentStyle( ) );
			}
			XlsCell cell = new XlsCell( cellStyleEntry, cellSizeInfo,
					getCurrentContainer( ), rowSpan );
			addContainer( cell );
		}
	}
	public void endCell( ICellContent cell )
	{
		if ( !isHidden( cell ) )
		{
			endNormalContainer( );
		}