Yet another 'mouseover-highlighting' question :)

Commander Salamander · Post by **Commander Salamander** » Sat Jan 05, 2008 2:21 am

I have read the forum archives on this topic, but I'm still too dense to figure this out. I have an XYPlot and I'd like to highlight the XYSeries upon mouseover.

I achieved this rather easily by registering a ChartMouseListener, casting to XYChartEntity, and getting the series index, which could then by used to call:

chart.getXYPlot().getRenderer().setSeriesStroke(seriesIndex,...)

However, I'd like to take this to the next step and highlight these series when particular XYTextAnnotations are moused over. I can detect the XYAnnotationEntity fine, but the class seems to contain insufficient information for me to determine which XYAnnotation was moused over. Any advice would be greatly appreciated...

Thanks!

Post by **david.gilbert** » Mon Jan 07, 2008 1:07 pm

That does look like a limitation. Maybe a solution would be to add an 'id' field to all annotations, and include this in the entity. I'll have to think some more about that (no time now, unfortunately).

gribas · Post by **gribas** » Mon Jan 07, 2008 6:04 pm

What about using the 'url' field to store some control information, like the series the annotation belongs to ?

Commander Salamander · Post by **Commander Salamander** » Mon Jan 07, 2008 7:35 pm

gribas wrote:What about using the 'url' field to store some control information, like the series the annotation belongs to ?

Good idea, I will try to use this as a workaround.

Thanks!

RichardWest · Post by **RichardWest** » Mon Jan 07, 2008 8:35 pm

gribas wrote:What about using the 'url' field to store some control information, like the series the annotation belongs to ?

I actually use this approach for content sensitive popup menus. I store the dataset, series, and item number in a comma-separated url string. That provides me all the information I need to lookup and content sensitive data from a map or other storage class.