I recommend using invokeLater to send a fn to Swing to do the rendering.
http://docs.oracle.com/javase/6/docs/api/javax/swing/SwingUtilities.html#invokeLater(java.lang.Runnable)
If you need Swing to notify the go channel when the rendering is complete,
you can do something like this:
(go
(let [c (chan)]
(SwingUtilities/invokeLater (fn [] (do ...stuff.... ) (close! c)))
(<! c)))
Wrap in a macro if you find yourself doing it a lot:
(go (in-swing-and-wait
...stuff...))
Timothy
On Mon, Jul 29, 2013 at 8:44 AM, <[email protected]> wrote:
> Hi, I'm playing around with core.async a bit.
> Is it possible to put java.awt.Graphics object into a channel and do the
> drawing in a go loop consuming this channel.
> The problem I'm having is that when I consume the channel, core.async has
> switched to another thread. I'm not in the Swing thread anymore.
> Is there a way to stay in the Swing thread while doing this?
>
> This is how I setup the producer:
>
> (defn create-canvas [paint-channel]
> (proxy [JButton] []
> (getPreferredSize [] (Dimension. 300 300))
> (paintComponent [g]
> (go
> (proxy-super paintComponent g)
> (>! paint-channel g))))) ;I've tried put! too
>
> Thanks!
> --anders
>
>
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