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
}
			}
			else
			{
				if ( specifiedHeight > 0 )
				{
					dim.setDimension( instrinsic.getWidth( ), specifiedHeight );
				}
				else
				{
					dim.setDimension( instrinsic.getWidth( ), instrinsic
							.getHeight( ) );
				}
			}
		}
		return dim;
	}
	public boolean layoutChildren( )
	{
		if ( root == null )
		{
			return false;
		}
		assert ( parent instanceof ILineStackingLayoutManager );
		ILineStackingLayoutManager lineParent = (ILineStackingLayoutManager) parent;
		
		if ( root.getAllocatedHeight( ) > lineParent
				.getCurrentMaxContentHeight( ) )
		{
			if ( !parent.isPageEmpty( ) )