[chimera-dev] chimera.widgets.ModelOptionMenu aggressiveness

[Eric Pettersen]

Hi Charlie,
	Chimera does force dialogs to unmap as an image is saved in order to  
give it the best chance of not having the graphics window obscured as  
the image is saved.  We would like to move to a technology where  
image saving isn't directly tied to the visibility of the graphics  
window, but for now this is what we have.
	So your extension is doing something when the dialog unmaps that  
affects the displayed image?  Are you sure you want to do it there  
rather than overriding the dialog's Cancel method (which will be  
called if the dialog is Closed or the window's 'X' button is  
clicked)?  If you override Cancel, you need to make sure to call  
ModelessDialog.Cancel(self) in the overriding method.
	Another option is to respond to Chimera's 'unmapped' and 'mapped'  
triggers (which occur as Chimera forces child dialogs to unmap/map)  
to avoid changing the display for this kind of temporary dialog  
hiding.  If you wrote a handler function like this:

	def myUnmap(self, *args):
		... do something in response to temporary unmap...

you would register the trigger handler with:

	chimera.triggers.addHandler('unmapped', myUnmap, None)

Triggers and handlers are described here:  http://www.cgl.ucsf.edu/ 
chimera/docs/ProgrammersGuide/Examples/Main_AtomTrigger.html

	Let me know if you need more info.

--Eric

On Mar 6, 2006, at 1:19 PM, Charlie Moad wrote:

>      I am using chimera.widgets.ModelOptionMenu in my plugin as
> suggested, but when I attempt to save a screen image its as if my
> plugin/the structure is being unmapped then mapped again.  The tiles
> are rendered before my plugin reloads the interface.  Is there a way I
> can programmatically destroy my plugin's instance so I can at least
> take a screenshot without anything changing?  I poked around
> chimera.extension.manager without success.
>
> Thanks,
>      Charlie
>
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