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Creating interactive areas on a WPieChart

Added by Edwin Bentley over 10 years ago

It may be that I'm overly complicating this, but I don't really understand how to implement having the data segments on a pie chart be interactive.

What I really want to be able to do, is when a segment is clicked - to be able to open up some sort of popup widget with more information about that particular data field.

I just can't see a way that this can be easily done, and how you go about adding an WAbstractArea onto a data segment.

Any pointers would be greatly appreciated.


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RE: Creating interactive areas on a WPieChart - Added by Koen Deforche over 10 years ago

Hey Edwin,

This isn't well done in WPieChart (on our behalf), but there's a way to do this by specializing addDataPointArea()

http://www.webtoolkit.eu/wt/doc/reference/html/classWt_1_1Chart_1_1WPieChart.html#a566d64a04ee31771c99e399c4cf15c4e

This function will be called for every pie for which ToolTip data is available in the model (since that's how a tooltip can be shown), but it allows you to hook up other functionality to the area like reacting to events.

Regards,

koen

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