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From Scott Lanham <li...@sael.com.au>
Subject Re: Square PushButton
Date Fri, 07 Aug 2009 03:00:21 GMT
Thanks Greg,

If the buttons don't all fit with their preferred height in a vertically 
oriented box pane I would resigned to it just sqaushing them until they fit and 
ignore the aspect ratio.

Cheers,

Scott.

On Fri, 7 Aug 2009 12:36:43 pm Greg Brown wrote:
> OK, TerraPushButtonSkin now properly respects the
> "preferredAspectRatio" style. If you set it to 1 (and the parent
> container respects the button's preferred size), you'll get a square
> button.
>
> However, you won't be able to simply rely on the box pane for
> calculating the correct preferred height for all of the buttons. The
> (unconstrained) preferred height of the box pane is still going to be
> determined as the sum of the unconstrained preferred heights of the
> buttons. Only when the width of the box pane is constrained can we
> determine the actual button heights (since they depend on the max.
> button width, which isn't known until layout - it is not, and cannot
> be, known at preferred size calculation time).
>
> So, you identified a valid issue - thank you! But in order to meet
> your use case, you'll need to ensure that the box pane is given enough
> vertical height to accommodate all the buttons - that height can't be
> determined automatically. Even a scroll pane or panorama can't help
> here - your box pane must simply be given enough vertical screen real
> estate to display all of the buttons.
>
> Hope this helps.
>
> G
>
> On Aug 6, 2009, at 9:47 PM, Greg Brown wrote:
> > I understand your use case. I think that a vertical box pane with
> > fill set to true would meet your needs, if we can get PushButton to
> > behave correctly with respect to preferred aspect ratio.  :-)  I'm
> > looking into it right now.
> >
> > On Aug 6, 2009, at 9:42 PM, Scott Lanham wrote:
> >> Thanks Greg,
> >>
> >> What I originally expected aspect ratio to do is to increase the
> >> smallest of
> >> either height or width to keep the ratio constant. But my focus is
> >> only on my
> >> own needs so it is hard to see the big picture. It turns out a
> >> square button
> >> looks terrible when I did get it working and I ended up using an
> >> aspect ratio
> >> of 1.2. To get that ratio to work I had to set preferred height but
> >> I don't
> >> like setting explicit dimensions if it can be avoided though.
> >>
> >> What I am ultimately trying to do at the moment is create a
> >> vertical "toolbar"
> >> that keeps all buttons the same size. The size of the buttons are
> >> dictated by
> >> the button with the largest content and the aspect ratio is to keep
> >> all the
> >> buttons at a nice shape. One of the apps I work on is touch screen
> >> based so
> >> keeping the buttons large and a nice shape is important.
> >>
> >> On Fri, 7 Aug 2009 11:21:22 am Greg Brown wrote:
> >>> Preferred aspect ratio currently affects the height if it is less
> >>> than
> >>> 1, and the width if it is greater than or equal to 1. However, I can
> >>> see why you might expect that setting it to a value of 1 would
> >>> produce
> >>> a square button. I'll look into that.
> >>>
> >>> In the meantime, your best bet is to either a) use square content
> >>> (such as an icon whose width and height are equal) or b) manually
> >>> set
> >>> the preferred width and height to the same value.
> >>>
> >>> G
> >>>
> >>> On Aug 6, 2009, at 8:44 PM, Scott Lanham wrote:
> >>>> Hi,
> >>>>
> >>>> I would like to create a PushButton that stays square no matter
> >>>> what
> >>>> its
> >>>> button data contains. I have tried to set preferredAspectRatio to 1
> >>>> but it
> >>>> only appears to affect the button width. Is there any way I can
> >>>> keep
> >>>> a button
> >>>> square besides setting the preferred height and width to be the
> >>>> same?
> >>>>
> >>>> Thanks,
> >>>>
> >>>> Scott.


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