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
{
					dim.setDimension( specifiedWidth,
							(int) ( specifiedWidth / ratio ) );
				}
			}
			else
			{
				if ( specifiedHeight > 0 )
				{
					dim.setDimension( (int) ( specifiedHeight * ratio ),
							specifiedHeight );
				}
				else
				{
					dim.setDimension( instrinsic.getWidth( ), instrinsic
							.getHeight( ) );
				}
			}
		}
		else
		{
			if ( specifiedWidth > 0 )
			{
				if ( specifiedHeight > 0 )
				{
					dim.setDimension( specifiedWidth, specifiedHeight );
				}
				else
				{
					dim.setDimension( specifiedWidth, instrinsic.getHeight( ) );