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  1. #1
    kholostoi is offline Member
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    Sep 2009
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    Default How to: draw line between 2 nodes of 2 trees

    I have 2 JTree on 2 JScrollPane. Now I need to draw a line from one selected node in the right tree to one in the left tree with the same name (node's name).
    I do not know how to draw line between 2 components like that. Could you give me some advices?

    I saw this technique in the COMA++ system. I attach a picture from that for more understandable:

    h t t p : //

    (sorry, I can up the image since I do not have enough posts)

    I will appreciate for any help. Thank you very much :)

  2. #2
    mrmatt1111's Avatar
    mrmatt1111 is offline Senior Member
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    Aug 2009
    San Jose, CA, USA
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    Seems like you would need to have a transparent panel that covers both JScrollPane's and then draw lines on the transparent panel. You would have to make sure the covering panel doesn't eat all the mouse and keyboard events and you would have to figure out the positioning and linking of the lines and communicate it with that panel.
    Last edited by mrmatt1111; 09-03-2009 at 08:18 PM.
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