Cool... But how do I get that into the legend renderer?
I would have assumed it was via the XYLineAndShapeRenderer subclass itself, but I cannot see where LegendGraphic is used in the API...
Tim
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Question
Custom Image Legend Renderer in JFreeChart?
Hi all!
I have created my own renderer in JFreeChart (extending XYLineAndShapeRenderer) to draw images at the given locations on the chart
This works well
But the legend shows a default red box next to the series name. Does anyone know how to override this functionality to draw a small version of my image in the legend instead?
I am guessing I need to extend LegendGraphic at some point, but I cannot see where I should fit this in...
Cheers
Tim
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Answers
* "XYLineAndShapeRenderer" should implement "LegendItemSource" which defines the method:
"LegendItemCollection getLegendItems()"
* You use the "add" method to insert "LegendItem"s into your custom "LegendItemCollection".
* The "LegendItem" class is used to initalalize the "LegendGraphic"s. So you just pass that "TexturePaint" into one of the constructors of "LegendItem"
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by: SprudeVIPosted on 2008-05-14 at 05:40:18ID: 21563423
You do not even need to subclass: The constructor of LegendGraphic accepts a java.awt.Shape and a java.awt.Paint. For the Paint you can simply hand in a java.awt.TexturePaint with your image.