Bug 132508 Mouse Click->URL Redirect does not work on Legend in PDF
Descrition: Add an interactivity action on the chart legend (mouse click, URL redirect), when preview in pdf. It does not take effect. Steps to reproduce: 1.Create a chart, bind dataset. 2.In the "Format Chart" tab of chart builder, add an interactivity to the legend. Type: Mouse Click, Action: URL Redirect. 3.Preview in PDF, it could not take effect.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFImageLM.java
* @return
	 * @throws IOException
	 * @throws MalformedURLException
	 * @throws BadElementException
	 */
	protected Dimension getIntrinsicDimension( IImageContent content )
			throws BadElementException, MalformedURLException, IOException
	{
		Image image = null;
		switch ( content.getImageSource( ) )
		{
			case IImageContent.IMAGE_FILE :
				ReportDesignHandle design = content.getReportContent( )
						.getDesign( ).getReportDesign( );
				URL url = design.findResource( content.getURI( ),
						IResourceLocator.IMAGE );
				InputStream in = url.openStream( );
				try
				{
					byte[] buffer = new byte[in.available( )];
					in.read( buffer );
					image = Image.getInstance( buffer );
				}
				catch ( Exception ex )
				{
					logger.log( Level.WARNING, ex.getMessage( ), ex );
				}
				finally
				{
					in.close( );