Re: Reread file option for "image" standard object

[Lars Clausen <lrclause cs uiuc edu>]

On Thu, 8 Aug 2002, Dolores Alia de Saravia wrote:
> 
> I would not like the diagram change without my conscius intervention; 
> but,  for this case, I beleive Lars's   idea to pay attention  to 
> timestamp may be sufficient:  
> 
>  no need for  another boolean variable as my proposal contains
> 
> The rereading of file can be made whenever these two things have 
> happened, in this order:
> 
> a) the file has changed

This is tricky.  stat(2) can take a while, especially over NFS.  If we put
it in image_update_data(), moving or resizing the image would be slowed
down.  We could have it in the image_move_handle() function and only check
when doing HANDLE_MOVE_FINAL (i.e. when the user releases the button after
move).  Unfortunately, image_move() doesn't have the equivalent.  We could
of course also just use an idle timer.

> b)the user has clicked the apply or ok button.

Absolutely.

-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
will defend to the death your right to say it."   | Where are we going, and
    --Evelyn Beatrice Hall paraphrasing Voltaire  | what's with the handbasket?