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/SwingDisplayServer.java
* 
	 * @see org.eclipse.birt.devices.IDisplayServer#getObserver()
	 */
	public final Object getObserver( )
	{
		return _simc.getObserver( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDisplayServer#getTextMetrics(org.eclipse.birt.chart.model.component.Label)
	 */
	public ITextMetrics getTextMetrics( Label la )
	{
		return new SwingTextMetrics( this, la );
	}
	/**
	 * Returns the image cache
	 * 
	 * @return
	 */
	final SwingImageCache getImageCache( )
	{
		return _simc;
	}
	final double pointsToPixels( double dPoints )
	{
		return dPoints * getDpiResolution( ) / 72d;
	}
}