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
}
		assert false;
		return null;
	}
	/**
	 * Reusable 'strokes' for rendering lines may be obtained from here
	 * 
	 * @param ls
	 * @return
	 */
	public final Stroke getCachedStroke( LineAttributes lia )
	{
		if ( lia == null )
			return null;
		Stroke s = (Stroke) _htLineStyles.get( lia );
		if ( s == null )
		{
			BasicStroke bs = null;
			if ( lia.getStyle( ).getValue( ) == LineStyle.DASHED )
			{
				float[] faStyle = new float[]{
						6.0f, 4.0f
				};
				bs = new BasicStroke( lia.getThickness( ),
						BasicStroke.CAP_ROUND,
						BasicStroke.JOIN_ROUND,
						0,
						faStyle,
						0 );
			}