Bug 193886 NPE is thrown when preview external CSS style in ppt[1205]
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTRender.java
logger.log( Level.WARNING, ioe.getMessage( ), ioe );
		}
		
		
		
		
		
		if ( IStyle.LINE_THROUGH_VALUE.equals( style.getProperty( IStyle.STYLE_TEXT_LINETHROUGH ) ) )
		{
			drawLine( layoutPointX2PPT( textX ),
					layoutPointY2PPT( textY
							+ text.getFontInfo( ).getLineThroughPosition( ) ),
					layoutPointX2PPT( textX + text.getWidth( ) ),
					layoutPointY2PPT( textY
							+ text.getFontInfo( ).getLineThroughPosition( ) ),
					text.getFontInfo( ).getLineWidth( ),
					PropertyUtil.getColor( style.getProperty( StyleConstants.STYLE_COLOR ) ),
					"solid" ); 
		}
		if ( IStyle.OVERLINE_VALUE.equals( style.getProperty( IStyle.STYLE_TEXT_OVERLINE ) ) )
		{
			drawLine( layoutPointX2PPT( textX ),
					layoutPointY2PPT( textY
							+ text.getFontInfo( ).getOverlinePosition( ) ),
					layoutPointX2PPT( textX + text.getWidth( ) ),
					layoutPointY2PPT( textY
							+ text.getFontInfo( ).getOverlinePosition( ) ),
					text.getFontInfo( ).getLineWidth( ),
					PropertyUtil.getColor( style.getProperty( StyleConstants.STYLE_COLOR ) ),