WPF Button自定义模板问题
<Style TargetType= "Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Grid>
<Ellipse Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" Name="ellipse1">
<Ellipse.Fill>
<RadialGradientBrush Center="1,1" Opacity="0.5" RadiusX="0">
<GradientStop Color="Blue" Offset="1" />
<GradientStop Color="White" Offset="0" />
</RadialGradientBrush>
</Ellipse.Fill>
</Ellipse>
<Ellipse Width="90" Height="60">
<Ellipse.Fill>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0" Color="White"/>
<GradientStop Offset="1" Color="Transparent"/>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="ellipse1" Property="Fill" Value="Red"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
这个是自定义模板的代码,在第二个Ellipse的宽度和高度是写死的,我想这个宽度={TemplateBinding Width}-10,应该怎么去改这段代码,求教育!