I created a ticket at adobe's jira:

https://bugs.adobe.com/jira/browse/SDK-26621

Best regards

--- In flexcoders@yahoogroups.com, Alex Harui <aha...@...> wrote:
>
> I may not be understanding your issue.  I'm pretty sure our 
> SkinnableContainers delegate their assigned layouts to the contentGroup 
> because the contentGroup's measurements affect the size given to it by its 
> parent and the eventual call to updateDisplayList.  If you subclass 
> updateDisplayList in the SkinnableComponent I don't see how the assigned 
> layout will know that its measurement is not right.
> 
> One way to encapsulate the measurement and layout logic together is to create 
> a custom layout.  I suppose you could also just override measure() in the 
> component as well.
> 
> 
> On 5/31/10 12:34 AM, "Florian" <florian.saliho...@...> wrote:
> 
> 
> 
> 
> 
> 
> Hi Alex, usually i would agree right on spot but the fact that i am using a 
> basic layout in for group and the layouting is done correctly, i don't really 
> see the need for another class. There is just one update of the measuring 
> missing, which i don't understand.
> 
> When a Group is using a BasicLayout contentWidth and contentHeight should be 
> equal with width and height, if clipping is not enabled and no values for 
> width or height are set explicitly. Or am i mistaken in this point?
> 
> Best regards and thanks for taking the time.
> 
> --- In flexcoders@yahoogroups.com <mailto:flexcoders%40yahoogroups.com> , 
> Alex Harui <aharui@> wrote:
> >
> > I would create a new Layout class and properly measure and layout in its 
> > measure() and updateDisplayList() methods and use that as the 
> > contentGroup's layout, otherwise the Group's default layout class is going 
> > to be arguing with your code.
> >
> >
> > On 5/30/10 3:36 AM, "Florian" <florian.salihovic@> wrote:
> >
> >
> >
> >
> >
> >
> > Hi,
> >
> > i was and i am still running into problems with sizing and placing 
> > components in skins programmatically for spark ActionScript and 
> > MXML/ActionScript components.
> >
> > I want to initialize the components in MXML and size and position the 
> > children in the component's (a component's skin) updateDisplayList, 
> > although this might be a bit of an uncommon approach.
> >
> > I was implementing the positioning via UIComponent.move, which i realized 
> > was the wrong approach. After just setting the x and y properties, i did 
> > some research and stumbled across the ILayoutElement and its methods like 
> > setLayoutBoundsPosition and corresponding methods to modify the skin's 
> > display list. But somehow the group, which contains the children, does not 
> > propagate its new size up to its parent. I use the updateComplete event to 
> > invalidate the group's size and force the layout to be calculated properly 
> > a last time. The view looks as expected. But i don't think that 
> > invalidating a component "a last time" after an updateComplete event was 
> > dispatched is wrong.
> >
> > Now, what is the right approach for the following task: implementing a 
> > skinnable component and a corresponding skin. The skin creates the skin 
> > parts in MXML in a Group (id="contentGroup") but the layout is calculated 
> > within the skin's updateDisplayList method.
> >
> > I only found one useful article on the web, which is not really a lot of 
> > information at all 
> > (http://www.adobe.com/devnet/flex/articles/spark_layouts_print.html).
> >
> > Best regards.
> >
> >
> >
> >
> >
> >
> > --
> > Alex Harui
> > Flex SDK Team
> > Adobe System, Inc.
> > http://blogs.adobe.com/aharui
> >
> 
> 
> 
> 
> 
> 
> --
> Alex Harui
> Flex SDK Team
> Adobe System, Inc.
> http://blogs.adobe.com/aharui
>


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