Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		else if ( DesignChoiceConstants.UNITS_EX.equals( units ) )
		{
			px = DimensionUtil.convertTo( measure * fontSize / 3,
					DesignChoiceConstants.UNITS_PT,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		else if ( DesignChoiceConstants.UNITS_PERCENTAGE.equals( units ) )
		{
			px = DimensionUtil.convertTo( measure * fontSize / 100,
					DesignChoiceConstants.UNITS_PT,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		
		else if ( "".equals( units ) ) 
		{
			units = SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( )
					.getDefaultUnits( );
			px = DimensionUtil.convertTo( measure,
					units,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		else if ( units == null )
		{
			px = 0.0;
		}
		else
		{