Re: [Sc-devel] SCScrollView beachball?

[Jan Trutzschler <sc3@xxxxxxxxxxxxxxxxx>]

great, Scott,
seems to work in my more complex GUI too.
thanks,
Jan

On Dec 2, 2007, at 12:59 PM, Scott Wilson wrote:

> I've committed a fix now. It turned out to be fairly simple. The  
> Scrollviews use userScrolled to fire their action in most cases,  
> but if the mutex is already locked, you've got a problem. (This  
> also comes up with visibleOrigin, which fires the action from the  
> lang). In this case adding or removing views sometimes caused  
> incidental scrolling when the enclosed graphview resized. I figure  
> the action shouldn't fire in such cases anyway, so I just blocked.
>
> Works for me now with your example. Give it a try and let me know  
> if there're any other problems.
>
> S.
>
> On 1 Dec 2007, at 19:49, Scott Wilson wrote:
>
> > Okay, something to do on my Sunday afternoon!
> >
> > The other fix is committed now, btw.
> >
> > S.
> >
> > On 1 Dec 2007, at 19:39, Jan Trutzschler wrote:
> >
> > > Hi Scott,
> > >
> > > below is a simple example. It doesn't crash immediately but add a  
> > > few views and remove them, scroll around and remove and at a  
> > > certain point it's time for beachball!
> > > cheers,
> > > Jan
> > >
> > > (
> > > var addView, removeView, allviews, win, scroll;
> > > win = SCWindow.new;
> > > win.view.decorator_(FlowLayout(Rect(0, 0, win.view.bounds.width,  
> > > 20)));
> > >
> > > SCButton(win, Rect(0,0, 80,20)).states_([['add']])
> > > 	.action_{|v| addView.value};
> > > SCButton(win, Rect(0,0, 80,20)).states_([['remove']])
> > > 	.action_{|v| removeView.value};	
> > > win.view.decorator.nextLine;	
> > > scroll = SCScrollView(win, Rect(0,24,150,100));
> > >
> > > scroll.decorator_(FlowLayout(scroll.bounds));
> > >
> > > addView = {
> > > 	allviews = allviews.add(SC2DSlider(scroll, Rect(0,0,100,100)));
> > > };
> > >
> > > removeView = {
> > > 	if(allviews.size > 0){
> > > 		allviews.last.remove;
> > > 		allviews.removeAt(allviews.size-1);
> > > 		scroll.decorator.shift(0, -100);
> > > 	}
> > > };
> > >
> > > win.front;
> > > )
> > >
> > >
> > >
> > > On Dec 1, 2007, at 2:30 PM, Scott Wilson wrote:
> > >
> > > > Hi,
> > > >
> > > > Can you send a simple example that causes this?
> > > >
> > > > There's some futzing involved in making SCScrollView behave as  
> > > > expected, so it's possible I've missed a corner case.
> > > >
> > > > S.
> > > >
> > > > On 29 Nov 2007, at 16:18, Jan Trutzschler wrote:
> > > >
> > > > > Hi,
> > > > > i'm adding & removing views from a SCScrollView and at a  
> > > > > certain point (i guess when it's trying to hide the scrollbars)  
> > > > > SC shows me a beachball ... i paused the debugger and he hangs at
> > > > >
> > > > > - (void)userScrolled:(NSNotification *)notification
> > > > > {
> > > > > 	// if this happens from a visibleOrigin method we can't use  
> > > > > sendMessage, so the action gets called from the lang
> > > > > 	if(!((SCScrollTopView*)mTopView)->isInSetClipViewOrigin()) {
> > > > > 		mTopView->sendMessage(s_doaction, 0, 0, 0); // this must be a  
> > > > > scroll view
> > > > > 	}
> > > > > }
> > > > >
> > > > > i commented the sendMessage out and the beachball does not  
> > > > > coming back anymore ...
> > > > >
> > > > > any ideas?
> > > > >
> > > > > Jan
> > > > >
> > > > > _______________________________________________
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> > > >
> > > >
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