Finally I found a solution that works in case. I should use Rectangle.OpacityMask
instead of Rectangle.Fill
:
The resource:
<Canvas Width="256" Height="256" ClipToBounds="True" x:Key="SubmitVisualIcon">
<Path Fill="#FFFFFF00">
<Path.Data>
<PathGeometry FillRule="Nonzero" Figures="M44.436129,25.256006L54.222273,25.256006 75.259996,46.29286 70.368799,51.187792 54.094614,67.462006 44.561911,67.462006 44.436129,67.337162 62.016504,49.752106 15.633995,49.752106 15.633995,42.837337 62.016504,42.837337z M45,5.6100006C23.245507,5.6100006 5.6100006,23.245506 5.6100006,45 5.6100006,66.754498 23.245507,84.389999 45,84.389999 66.754499,84.389999 84.389997,66.754498 84.389997,45 84.389997,23.245506 66.754499,5.6100006 45,5.6100006z M45,0C69.852816,0 89.999998,20.147187 89.999998,45 89.999998,69.852814 69.852816,90.000004 45,90.000004 20.147188,90.000004 9.5367432E-07,69.852814 0,45 9.5367432E-07,20.147187 20.147188,0 45,0z"/>
</Path.Data>
</Path>
</Canvas>
The Template:
<ControlTemplate x:Key="MyButton" TargetType="{x:Type Button}">
<Border x:Name="root">
<Grid>
<Rectangle VerticalAlignment="Center" HorizontalAlignment="Center"
RenderOptions.BitmapScalingMode="HighQuality"
Width="32" Height="32"
Fill="{TemplateBinding ui:UIElement.VisualIconForeground}">
<!-- fill the rectangle with what color do you want, it also can be bounded to every thing -->
<!-- and then, use the Canvas as a OpacityMask on rectangle, just like this: -->
<Rectangle.OpacityMask>
<VisualBrush Stretch="Fill">
<VisualBrush.Visual>
<Binding Path="(ui:UIElement.VisualIcon)"
RelativeSource="{RelativeSource TemplatedParent}"/>
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
<!-- this will show the icon with color you defined in Rectangle.Fill -->
</Rectangle>
<ContentPresenter />
</Grid>
</Border>
</ControlTemplate>
Usage:
<Button Content="Save" ui:UIElement.VisualIcon="{DynamicResource SubmitVisualIcon}"
ui:UIElement.VisualIconForeground="Some_Brush">
Another Usage:
<Button Content="Save" ui:UIElement.VisualIcon="{DynamicResource SubmitVisualIcon}"
ui:UIElement.VisualIconForeground="Some_Another_Brush">
Another Usage 2:
<Button Content="Save" ui:UIElement.VisualIcon="{DynamicResource AnotherVisualIcon}"
ui:UIElement.VisualIconForeground="Some_Another_Brush">