how does the Squiggle zoom function work?

[Michael H�ndel]

Hello there,

 

can somebody describe me, how the zoom function in the Batik Squiggle-Browser works??

 

I want to implement a similar function in one of my applications, but I'm going insane while trying to understand how it works. So far I think the zooming is done with the following code:

 

javax.swing.ActionMap map = canvas.getActionMap();
listeners.put(ZOOM_IN_ACTION,map.get(canvas.ZOOM_IN_ACTION));

 

or is it done anywhere else with a AffineTransform??

 

But I cannot figuere out, how to start the zoom function?? Can anybody help me??

 

thank you for helping me...
Michael.