Bug 195951 Focus for PNG does not work [13]
Description: Focus for PNG does not work. Build number: 2.2.0.v20070710-1223 Steps to reproduce: 1. New a Chart, set Output Format as PNG, in "Format Chart" tab, add interactivity for Value Series, Event: Focus, Action: Hyperlink or invoke script. 2. Preview, focus in Value Series. Expected result: Interactivity works. Actual result: It does not work. Error log: N/A
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/image/JavaxImageIOWriter.java
IIOWriteWarningListener,
		IImageMapEmitter
{
	protected Image _img = null;
	protected Object _oOutputIdentifier = null;
	private Bounds _bo = null;
	private boolean _bImageExternallySpecified = false;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.device.extension/image" ); 
	private final static String NO_OP_JAVASCRIPT = "javascript:void(0);"; 
	private final static String POLY_SHAPE = "poly"; 
	
	private final long TIMESTAMP = System.currentTimeMillis( );
	private boolean bAddCallbackByClick = false;
	private boolean bAddCallbackByDBLClick = false;
	private boolean bAddCallbackByMouseOver = false;
	
	/**
	 * Returns the output format string for this writer.
	 * 
	 * @return
	 */
	protected abstract String getFormat( );
	/**
	 * Returns the output image type for this writer.