[IronPython] Silverlight - animation from code

[Michael Foord]

Odd. I'm using the binaries from dynamicsilverlight. The following code 
works fine as a standalone example, but doesn't change the font size 
when run from inside my web ide ??? Odd.

from System import TimeSpan
from System.Windows import Application, Duration
from System.Windows.Controls import Canvas, TextBlock
from System.Windows.Media.Animation import (
    DoubleAnimation, Storyboard
)

root = Canvas()

Application.Current.RootVisual = root

t = TextBlock()
t.FontSize = 20
t.Text = 'Move the Mouse Over Me'
root.Children.Add(t)

sb = Storyboard()
duration = Duration(TimeSpan.FromSeconds(0.25))
a = DoubleAnimation()
a.Duration = duration
sb.Duration = duration
sb.AutoReverse = True
sb.Children.Add(a)

Storyboard.SetTarget(a, t)
Storyboard.SetTargetProperty(a, 'FontSize')
a.From = 20
a.To = 30

def anim(s, e):
    print 'Starting'
    sb.Begin()
   
t.MouseEnter += anim

root.Resources.Add(sb)




Michael Foord wrote:
> Any idea why the following code does nothing? (root is the application 
> root visual - the textblock becomes visible and 'starting' is printed at 
> the right time - but the fint size doesn't change as I would expect from 
> the Silverlight docs.)
>
> from System import TimeSpan
> from System.Windows import Duration
> from System.Windows.Controls import TextBlock
> from System.Windows.Media.Animation import (
>     DoubleAnimation, Storyboard
> )
>
> root.Children.Clear()
> root.Resources.Clear()
>
> t = TextBlock()
> t.FontSize = 20
> t.Text = 'Something Blue'
> root.Children.Add(t)
>
> sb = Storyboard()
> duration = Duration(TimeSpan.FromSeconds(2))
> a = DoubleAnimation()
> a.Duration = duration
> sb.Duration = duration
> sb.Children.Add(a)
>
> Storyboard.SetTarget(a, t)
> Storyboard.SetTargetProperty(a, 'FontSize')
> a.From = 20
> a.To = 40
>
> def anim(s, e):
>     print 'Starting'
>     sb.Begin()
>    
> t.MouseEnter += anim
>
> root.Resources.Add(sb)
>
>
>
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