Hi,
Is it possible to generate tooltip for the servlet?I understand we can get tooltip in jsp using
<%
String filename = LineChartServlet.doImage( request, response );
String graphURL = "http://localhost:8080/DisplayChart?filename=" + filename;
%>
<html>
<head>
<title>Line Chart </title>
</head>
<body>
<table border=0>
<tr>
<td>
<img src="<%= graphURL %>" width=500 height=300 border=0 usemap="#<%= filename %>">
</table>
</body>
</html>
I have just a servlet
http://localhost:8080/myServlet
which displays the image. How can I get tooltip on that? I saw new function on ChartFactory::
createLineChart(java.lang.String title,
java.lang.String categoryAxisLabel,
java.lang.String valueAxisLabel,
CategoryDataset data,
boolean legend,
boolean tooltips,
boolean urls)
Does this create tooltips? 0.9.4 is not working for me, so couldn't verify.
I have jCommon-0.7.1.jar also. Still 0.9.4 doesn't work?
Thanks.
ToolTip in servlet
-
Dave Gilbert
Re: ToolTip in servlet
That tool tip flag just controls whether or not the chart will generate tool tip information when it is drawn - and that information will only be captured *if* a ChartRenderingInfo object is passed in to the drawing method.
It doesn't do anything to DISPLAY the tooltips, since the chart doesn't really know anything about where it is being drawn - it just gets passed a Graphics2D object.
The ChartPanel class knows how to display tool tips...but when it comes to servlets, I don't know how it is done. Richard Atkinson has done some work on the generation of HTML image maps, and I think it supports tool tips but I don't know the details...
Regards,
DG
It doesn't do anything to DISPLAY the tooltips, since the chart doesn't really know anything about where it is being drawn - it just gets passed a Graphics2D object.
The ChartPanel class knows how to display tool tips...but when it comes to servlets, I don't know how it is done. Richard Atkinson has done some work on the generation of HTML image maps, and I think it supports tool tips but I don't know the details...
Regards,
DG
-
Richard Atkinson
Re: ToolTip in servlet
To get a JPEG or PNG chart to display tooltips you must have an associated
image map in the HTML page that contains the IMG tag. You cannot display
tooltips if the client browser is directly accessing (in the Address bar)
the servlet that binary streams the charts.
To get tooltips working with your charts you will have to change your
methodology.
Regards,
Richard...
image map in the HTML page that contains the IMG tag. You cannot display
tooltips if the client browser is directly accessing (in the Address bar)
the servlet that binary streams the charts.
To get tooltips working with your charts you will have to change your
methodology.
Regards,
Richard...