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Change Bubble color at run time

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Chart

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jason asked on 13 Jun 2012, 07:29 PM

I am trying to restyle the bubbles in a Bubble series so they look a little more 3-d. I have accomplished this with a radial gradiant in this style here:

<Style x:Key="CustomBubbleStyle" TargetType="chart:Bubble">

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="chart:Bubble">

<Canvas >

<Ellipse x:Name="PART_BubbleElement"

Canvas.Left="{TemplateBinding Left}"

Canvas.Top="{TemplateBinding Top}"

Width="{TemplateBinding Diameter}"

Height="{TemplateBinding Diameter}"

>

<Ellipse.Fill>

<RadialGradientBrush>

<GradientStop Color="#FFF5F5F9"/>

<GradientStop Color="#FF091E8F" Offset="0.989"/>

</RadialGradientBrush>

</Ellipse.Fill>

</Ellipse>

</Canvas>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

My problem is that in every example I have seen you have to set the colors at design time. In out scenario I have built a control that extends the RadChart. I have a dependency property which is a list of brushes. If that is set then I use those colors. If not then I use your default colors. I was thinking I could catch the item when the color is set and then change it to add a gradiant so it is the same color just with the gradient added but I can't seem to figure out if that is possible. Something like setting the fill property to Bind to something in Bubble and then using a converter to add the gradient. Is anything like this possible or do I just need to come up with new default colors on my own and do it that way? Sorry if this does not make sense as I was having trouble figuring out how to explain it. Thanks.

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