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
}
				break;
			case IImageContent.IMAGE_NAME :
			case IImageContent.IMAGE_EXPRESSION :
				image = Image.getInstance( content.getData( ) );
				break;
			case IImageContent.IMAGE_URL :
				image = Image.getInstance( new URL( content.getURI( ) ) );
				break;
			default :
				assert ( false );
		}
		if ( image != null )
		{
			Object design = content.getGenerateBy( );
			int resolution = 96;
			if ( design instanceof ExtendedItemDesign )
			{
				resolution = 192;
			}
			return new Dimension( (int) ( image.plainWidth( ) * 1000
					/ resolution * 72 ), (int) ( image.plainHeight( ) * 1000
					/ resolution * 72 ) );
		}
		return null;
	}
	protected Dimension getSpecifiedDimension( IImageContent content )
	{
		Dimension dim = new Dimension( DEFAULT_WIDHT, DEFAULT_HEIGHT );
		Dimension instrinsic = null;