Bug 208373 Auto resize Chart to have a single axis without blank
When Chart is within Cross tab, chart axis image should have a single axis only, but there may be much blank in other area. Chart engine should auto resize the image to have the axis with fit size. Meanwhile, report engine should not set size for chart image.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/factory/Generator.java
{
	/**
	 * Internally used.
	 */
	private static final int UNDEFINED = IConstants.UNDEFINED;
	/**
	 * Internally used.
	 */
	static final int WITH_AXES = 1;
	/**
	 * Internally used to maintain type information.
	 */
	static final int WITHOUT_AXES = 2;
	/**
	 * An internal style processor.
	 */
	private IStyleProcessor implicitProcessor;
	/**
	 * The internal singleton Generator reference created lazily.
	 */
	private static Generator g = null;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.engine/factory" ); 
	/**