Bug 207268 Add visibility option for plot within axes
For chart with axes, we should make plot within axes invisible. Meantime, other plots, such as axes, legend and title, should be visible. This enhancement doesn't include UI change, and it is required for cross tab integration.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
EList el;
		int iRangeCount, iAxisCount = oaxa.length;
		MarkerRange mr;
		RectangleRenderEvent rre;
		DataElement deStart, deEnd;
		AutoScale asc;
		double dMin = 0, dMax = 0;
		int iOrientation, iCompare = IConstants.EQUAL;
		final Bounds bo = BoundsImpl.create( 0, 0, 0, 0 );
		final IDeviceRenderer idr = getDevice( );
		final ScriptHandler sh = getRunTimeContext( ).getScriptHandler( );
		final boolean bTransposed = ( (ChartWithAxes) getModel( ) ).isTransposed( );
		final PlotWithAxes pwa = (PlotWithAxes) getComputations( );
		final StringBuffer sb = new StringBuffer( );
		Bounds boText = BoundsImpl.create( 0, 0, 0, 0 );
		Anchor anc = null;
		Label la = null;
		TextRenderEvent tre;
		double dOriginalAngle = 0;
		for ( int i = 0; i < iAxisCount; i++ )
		{
			ax = oaxa[i].getModelAxis( );
			iOrientation = ax.getOrientation( ).getValue( );
			if ( bTransposed ) 
			{
				iOrientation = ( iOrientation == Orientation.HORIZONTAL )
						? Orientation.VERTICAL : Orientation.HORIZONTAL;
			}
			asc = oaxa[i].getScale( );
			el = ax.getMarkerRanges( );