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
case TransformationEvent.ROTATE :
				_g2d.rotate( ( tev.getRotation( ) * Math.PI ) / 180d );
				break;
			case TransformationEvent.SCALE :
				_g2d.scale( tev.getScale( ), tev.getScale( ) );
				break;
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDeviceRenderer#start()
	 */
	public void before( ) throws ChartException
	{
		
		_lhmAllTriggers.clear( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDeviceRenderer#end()
	 */
	public void after( ) throws ChartException
	{
		
		( (SwingDisplayServer) _ids ).getImageCache( ).flush( );
	}
}