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
if ( pre instanceof ArcRenderEvent )
			{
				final ArcRenderEvent acre = (ArcRenderEvent) pre;
				pt.addArc( (float) acre.getTopLeft( ).getX( ),
						(float) acre.getTopLeft( ).getY( ),
						(float) acre.getWidth( ),
						(float) acre.getHeight( ),
						(float) acre.getStartAngle( ),
						(float) acre.getAngleExtent( ) );
			}
			else if ( pre instanceof LineRenderEvent )
			{
				final LineRenderEvent lre = (LineRenderEvent) pre;
				if ( i == 0 )
				{
					pt.moveTo( (float) lre.getStart( ).getX( ),
							(float) lre.getStart( ).getY( ) );
				}
				pt.lineTo( (float) lre.getEnd( ).getX( ), (float) lre.getEnd( )
						.getY( ) );
			}
		}
		try
		{
			if ( flBackground instanceof ColorDefinition )
			{
				fillPathColor( pt, (ColorDefinition) flBackground );
			}
			else if ( flBackground instanceof Gradient )
			{