Bug 313459 Problem with % when generating images in tables.
See the attached BirtProject, it has two reports. Each identical except for this difference: The image width/height is set to a %age value (50%) in one (TestImage.rptdesign) and not-set in the other (TestImageWorking.rptdesign). TestImage.rptdesign does not display the image in pdf, but works fine in html. TestImageWorking.rptdesign shows the image in both pdf and html. The %age setting seems to cause the problem in pdf format.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/util/PropertyUtil.java
return DimensionType.parserUnit( value, DimensionType.UNITS_PX );
	}
	public static int getIntValue( CSSValue value )
	{
		if ( value != null && ( value instanceof FloatValue ) )
		{
			FloatValue fv = (FloatValue) value;
			return (int) fv.getFloatValue( );
		}
		return 0;
	}
	public static float getPercentageValue( CSSValue value )
	{
		if ( value != null && ( value instanceof FloatValue ) )
		{
			FloatValue fv = (FloatValue) value;
			float v = fv.getFloatValue( );
			if ( CSSPrimitiveValue.CSS_PERCENTAGE == fv.getPrimitiveType( ) )
			{
				return v / 100.0f;
			}
		}
		return 0.0f;
	}
	public static boolean isWhiteSpaceNoWrap( CSSValue value )
	{
		return IStyle.CSS_NOWRAP_VALUE.equals( value.getCssText( ) );
	}
}