[Interest] How can i animate Layout.preferredWidth and friends?

[Mark]

On Wed, Oct 2, 2013 at 11:51 AM, Saether Jan-Arve <
Jan-Arve.Saether at digia.com> wrote:

>  Of course it should not crash.****
>
> I get an ASSERT: "mo" in file qml\qqmlvme.cpp, line 849 (this is with
> current stable branch though).****
>
> ** **
>
> I'm a bit curious to know why do you want to animate that property?****
>
> What do you want to achieve?****
>
> ** **
>
> Jan Arve****
>
> ** **
>
> *From:* interest-bounces+jan-arve.saether=digia.com at qt-project.org[mailto:
> interest-bounces+jan-arve.saether=digia.com at qt-project.org] *On Behalf Of
> *Mark
> *Sent:* 30. september 2013 01:40
> *To:* Qt Interest
> *Subject:* [Interest] How can i animate Layout.preferredWidth and friends?
> ****
>
> ** **
>
> Hi,****
>
> ** **
>
> I thought something as simple as:****
>
> ** **
>
>             Behavior on Layout.preferredWidth {****
>
>                 NumberAnimation { duration: 1000 }****
>
>             }****
>
> ** **
>
> would do.. Apparently not since it crashes qmlscene..****
>
> Do i need to do it differently or did i just hit a bug?****
>
> ** **
>
> Version details:****
>
> Qt 5.1.0 x64 (i know, 5.1.1 is out)****
>
> Mac Mountain Lion fully updated****
>
> ** **
>
> Cheers,****
>
> Mark****
>

Hi Jan,

What i try to do is animate the (in this case) width. In a simple
description that would be it.
However, i try to animate the with of a component that is within a Layout.
In this case a RowLayout. If i use the width, the RowLayout itself doesn't
update, you can see that in this snippet [1]. Just press the nice orange
square :) What i want for that is to work. I tried animating the
Layout.preferredWidth property because changing the width using that does
update the RowLayout, but then the animation doesn't work.

That's all i'm trying to do.

[1] http://pastebin.kde.org/pxgjxhtza
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