Vista - Specifying Dynamic Values in XAML?

All:

In developing a custom control (UserControl), I have a StackPanel with
a gradient background and a TextBlock. This works fine. Now, I am
attempting to round the corners of the StackPanel. I can do this with
various clipping/Geometry objects, e.g., RectangleGeometry, etc.

Now, the problem I'm facing is that all of the clipping/geometry
objects seem to need a fixed size, e.g., Rect="0,0,100,100". Now, I
want my StackPanel to grow and shrink with it's parent (it is to be
placed on a Grid whose "cell" sizes grow and shrink with respect to the
host Window).

So, the goal is to have a rounded rect imposed on the StackPanel as it
grows and shrinks -- therefore, I cannot assign a fixed sized to the
clipping region/geometry -- I need the clipping region to grow in
shrink as well, in proportion to the StackPanel it's clipping.

Ideas? A better way to approach this?

Thanks,
John - jpuopolo

Hi,

john wrote:
> All:
>
> In developing a custom control (UserControl), I have a StackPanel with
> a gradient background and a TextBlock. This works fine. Now, I am
> attempting to round the corners of the StackPanel. I can do this with
> various clipping/Geometry objects, e.g., RectangleGeometry, etc.
>
> Now, the problem I'm facing is that all of the clipping/geometry
> objects seem to need a fixed size, e.g., Rect="0,0,100,100". Now, I
> want my StackPanel to grow and shrink with it's parent (it is to be
> placed on a Grid whose "cell" sizes grow and shrink with respect to the
> host Window).
>
> So, the goal is to have a rounded rect imposed on the StackPanel as it
> grows and shrinks -- therefore, I cannot assign a fixed sized to the
> clipping region/geometry -- I need the clipping region to grow in
> shrink as well, in proportion to the StackPanel it's clipping.
>
> Ideas? A better way to approach this?
>
> Thanks,
> John - jpuopolo

You think too much in GDI. Forget what you learned. You don't need to
draw the figures yourself. If you want to set borders to a StackPanel,
just use a Border control.

<StackPanel>
<Border CornerRadius="10" BorderBrush="Red" BorderThickness="5">
<TextBlock Text="Hello" />
</Border>
</StackPanel>

HTH,
Laurent
--
Laurent Bugnion, GalaSoft
Software engineering: http://www.galasoft-LB.ch
PhotoAlbum: http://www.galasoft-LB.ch/pictures
Support children in Calcutta: http://www.calcutta-espoir.ch

Laurent:

Guilty as charged - 15 years of Win32/.NET 2.0 conditioning...:-)

Thanks - I'll give it a try...

Best,
John


Laurent Bugnion wrote:
> Hi,
>
> john wrote:
> > All:
> >
> > In developing a custom control (UserControl), I have a StackPanel with
> > a gradient background and a TextBlock. This works fine. Now, I am
> > attempting to round the corners of the StackPanel. I can do this with
> > various clipping/Geometry objects, e.g., RectangleGeometry, etc.
> >
> > Now, the problem I'm facing is that all of the clipping/geometry
> > objects seem to need a fixed size, e.g., Rect="0,0,100,100". Now, I
> > want my StackPanel to grow and shrink with it's parent (it is to be
> > placed on a Grid whose "cell" sizes grow and shrink with respect to the
> > host Window).
> >
> > So, the goal is to have a rounded rect imposed on the StackPanel as it
> > grows and shrinks -- therefore, I cannot assign a fixed sized to the
> > clipping region/geometry -- I need the clipping region to grow in
> > shrink as well, in proportion to the StackPanel it's clipping.
> >
> > Ideas? A better way to approach this?
> >
> > Thanks,
> > John - jpuopolo
>
> You think too much in GDI. Forget what you learned. You don't need to
> draw the figures yourself. If you want to set borders to a StackPanel,
> just use a Border control.
>
> <StackPanel>
> <Border CornerRadius="10" BorderBrush="Red" BorderThickness="5">
> <TextBlock Text="Hello" />
> </Border>
> </StackPanel>
>
> HTH,
> Laurent
> --
> Laurent Bugnion, GalaSoft
> Software engineering: http://www.galasoft-LB.ch
> PhotoAlbum: http://www.galasoft-LB.ch/pictures
> Support children in Calcutta: http://www.calcutta-espoir.ch