[sc-users] GUI performance issues

[jostM]

It took me a bit to realize there were two different Scotts at work here ;-)
If one of you two could give me a few pointers on where it is best to 
start, perhaps I will delve into the primitives. That probably won't 
help for this case, but I might be able to fix things in the future then.

jostM


Scott Wilson wrote:
> Hmm. Not sure exactly why that's happening. It seems to occur even  
> when the view is hidden.
>
> The Cocoa views like text view and qc are subviews of the  
> SCGraphView. I would have thought hiding them was enough to prevent  
> them from drawing, but obviously not. I have a vague memory of seeing  
> some optimisation code disabled somewhere in the views. I'll see if I  
> can figure this out when I have a moment, but in the meantime if any  
> of the Cocoa gurus on the list have ideas, do speak up.
>
> S.
>
> On 3 Apr 2008, at 16:53, jostM wrote:
>
>   
>> Hi Scott,
>>
>> run QD on the following;
>>
>> w=SCWindow.new.front;
>>
>>  w.view.flow{arg w;
>>      20.do{
>>      SCSlider(w,15 @ 150)
>>      };
>>
>>      SCTextView(w,100 @ 100)
>>
>>  };
>>
>>
>> you will see that the textview is updated everytime you move a slider.
>> And if I have many text views, then they are all updated everytime I
>> move a slider. If I have a large text view on an invisible tab, its
>> entire area is still updated everytime I move a slider. so I think the
>> issue is in the text view primitive, and in the quartzcomposer view
>> primitive. I remember when I first started working on TabbedView, both
>> QuartComposerView and TextView would not become invisble when their
>> parent became invisible. Perhaps when this was fixed, the update
>> mechanism was missed.  One of these days I will look into primitives,
>> but my work load does not allow it at the moment. Wish I could help  
>> with
>> this.
>>
>> jostM
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>
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