Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/swing/SwingRendererImpl.java
protected void init( )
	{
		final PluginSettings ps = PluginSettings.instance( );
		try
		{
			_ids = ps.getDisplayServer( "ds.SWING" ); 
			_tr = new SwingTextRenderer( _ids );
			iv = new InteractiveRenderer( );
		}
		catch ( ChartException pex )
		{
			logger.log( pex );
		}
	}
	/**
	 * Free all allocated system resources.
	 */
	public void dispose( )
	{
		
		if ( _ids != null )
		{
			_ids.dispose( );
			_ids = null;
		}
		
		if ( _g2d != null )
		{
			_g2d.dispose( );
			_g2d = null;