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
{
	/**
	 * A property name that identifies the double-buffered drawing capability.
	 */
	public static final String DOUBLE_BUFFERED = "device.double.buffered"; 
	private final LinkedHashMap _lhmAllTriggers = new LinkedHashMap( );
	private IDisplayServer _ids;
	private SwtTextRenderer _tr;
	private GC _gc = null;
	private IUpdateNotifier _iun = null;
	private SwtEventHandler _eh = null;
	private double dTranslateX = 0;
	private double dTranslateY = 0;
	private double dRotateInDegrees = 0;
	private double dScale = 1;
	private InteractiveRenderer iv;
	static final int CEIL = 1;
	static final int TRUNCATE = 2;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.device.extension/swt" ); 
	/**
	 * The required zero-argument constructor
	 */
	public SwtRendererImpl( )
	{
		final PluginSettings ps = PluginSettings.instance( );
		try
		{
			_ids = ps.getDisplayServer( "ds.SWT" ); 
			_tr = new SwtTextRenderer( _ids );
			iv = new InteractiveRenderer( );