Posted by
Michael Schmid on
Jul 24, 2020; 5:47pm
URL: http://imagej.273.s1.nabble.com/StackWindowListener-tp5023759p5023760.html
Hi Kenneth,
when the user changes the stack slice and you register as ImageListener,
you get an imageUpdated(imp) callback.
If you are not interested in events other then changing the slice, you
have to remember the slice number of the previous call.
Note that ImagePlus.addImageListener is static, so you must register
only once, and you get events for all windows.
Don't forget to de-register with removeImageListener.
Calling 'removeImageListener' too often does not hurt (it does nothing
if your class is not registered), but in some cases forgetting it can
cause trouble, because your plugin will still get called when all is
finished.
Michael
________________________________________________________________
On 24.07.20 19:33, Kenneth Sloan wrote:
> I find myself in need of what I would call a "StackWindowListener".
>
> I have an extension to StackWindow which is used in many of my plugins - which I prefer NOT to change (but I will, if I have to).
>
> Now, I have a need for a user-level program to get a callback when the slice is changed (via the usual stack control slider). Is there a way to do that without modifying (or further extending) the existing StackWindow?
>
> ===============================================
>
> In the alternative - is there an easy way to create something like a GenericDialog which is displayed while allowing the CURRENT thread to continue. Something that would allow:
>
> dialog.show();
> while(!dialog.done()){...do something interesting}
> // dialog done - get results
>
>
> I can get the desired effect by using KeyListener and having the user interact with the keyboad, but I'd like the option of a graphical dialog box which remains displayed while the main program proceeds.
>
> --
> Kenneth Sloan
>
[hidden email]
> Vision is the art of seeing what is invisible to others.
>
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