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
final int iOldLineWidth = _gc.getLineWidth( );
		int iLineStyle = SWT.LINE_SOLID;
		switch ( lia.getStyle( ).getValue( ) )
		{
			case LineStyle.DOTTED :
				iLineStyle = SWT.LINE_DOT;
				break;
			case LineStyle.DASH_DOTTED :
				iLineStyle = SWT.LINE_DASHDOT;
				break;
			case LineStyle.DASHED :
				iLineStyle = SWT.LINE_DASH;
				break;
		}
		_gc.setLineStyle( iLineStyle );
		_gc.setLineWidth( lia.getThickness( ) );
		_gc.setForeground( cFG );
		R31Enhance.setAlpha( _gc, lia.getColor( ) );
		drawArc( _gc,
				( (SwtDisplayServer) _ids ).getDevice( ),
				are,
				dTranslateX,
				dTranslateY,
				dScale );
		_gc.setLineStyle( iOldLineStyle );
		_gc.setLineWidth( iOldLineWidth );
		cFG.dispose( );
		
	}
	/*