Bug 179913 Meter Chart color by categories with null values does not work correctly [0001]
Description: Meter Chart color by categories with null values does not work correctly. Build number: 2.2.0.v20070329-1055 Steps to reproduce: 1. New a Meter Chart with values as follows: Moto, null; Nokia, 58; null, 66; Benq, null. 2. In "Format Chart" tab, select "Series" node, choose "Color by Categories". 3. Preview. Expected result: 1. The needle which shows the second value should take the second color. 2. There should be four in the legend area and the third name is null. Actual result: 1. The needle which shows the second value should take the first color. 2. There should be three in the legend area. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
newMetrics = checkEllipsisText( dExceedingSpace,
							dFWidth,
							xs,
							itm,
							la,
							legendData.dEllipsisWidth,
							legendData.maxWrappingSize );
					if ( newMetrics != null )
					{
						dFWidth = newMetrics[0];
						dFHeight = newMetrics[1];
						dDeltaHeight = legendData.insCa.getTop( )
								+ dFHeight
								+ legendData.insCa.getBottom( );
					}
					dWidth = dFWidth;
					dRealHeight = Math.max( dRealHeight, dHeight );
					dHeight = dDeltaHeight;
				}
			}
			else
			{
				dWidth = Math.max( dFWidth, dWidth );
				dHeight += dDeltaHeight;
			}
			columnList.add( new LegendItemHints( LEGEND_ENTRY,
					new Point( dExtraWidth, dHeight - dDeltaHeight ),
					dFWidth,
					dFHeight,
					la.getCaption( ).getValue( ),