Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.swt/src/org/eclipse/birt/chart/device/swt/SwtRendererImpl.java
_gc.setForeground( cFG );
		R31Enhance.setAlpha( _gc, lia.getColor( ) );
		_gc.drawPath( gp );
		
		_gc.setLineStyle( iOldLineStyle );
		_gc.setLineWidth( iOldLineWidth );
		
		gp.dispose( );
		cFG.dispose( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.event.IPrimitiveRenderer#fillArea(org.eclipse.birt.chart.event.AreaRenderEvent)
	 */
	public void fillArea( AreaRenderEvent are ) throws ChartException
	{
		iv.modifyEvent( are );
		
		Fill flBackground = validateMultipleFill( are.getBackground( ) );
		if ( isFullTransparent( flBackground ) )
		{
			return;
		}
		
		final Path pt = new Path( ( (SwtDisplayServer) _ids ).getDevice( ) );
		PrimitiveRenderEvent pre;
		for ( int i = 0; i < are.getElementCount( ); i++ )
		{
			pre = are.getElement( i );