Apple Style Toggle Button in WPF

A nice short post here, I wanted to share with you some code I recently used to create an Apple-style toggle button for WPF applications. I was quite surprised with how easy this was to make. Obviously it isn’t perfect but it makes do for my applications.

This is the style that I used:

<Style TargetType="{x:Type ToggleButton}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ToggleButton}">
                <Viewbox>
                    <Border x:Name="Border" CornerRadius="10"
                            Background="#FFFFFFFF"
                            Width="40" Height="20">
                        <Border.Effect>
                            <DropShadowEffect ShadowDepth="0.5" Direction="0" Opacity="0.3" />
                        </Border.Effect>
                        <Ellipse x:Name="Ellipse" Fill="#FFFFFFFF" Stretch="Uniform"
                                 Margin="2 1 2 1"
                                 Stroke="Gray" StrokeThickness="0.2"
                                 HorizontalAlignment="Stretch">
                            <Ellipse.Effect>
                                <DropShadowEffect BlurRadius="10" ShadowDepth="1" Opacity="0.3" Direction="260" />
                            </Ellipse.Effect>
                        </Ellipse>
                    </Border>
                </Viewbox>
                <ControlTemplate.Triggers>
                    <EventTrigger RoutedEvent="Checked">
                        <BeginStoryboard>
                            <Storyboard>
                                <ColorAnimation Storyboard.TargetName="Border"
                                                    Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                    To="#FF4CD661"
                                                    Duration="0:0:0.1" />
                                <ThicknessAnimation Storyboard.TargetName="Ellipse"
                                                        Storyboard.TargetProperty="Margin"
                                                        To="20 1 2 1"
                                                        Duration="0:0:0.1" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger>
                    <EventTrigger RoutedEvent="Unchecked">
                        <BeginStoryboard>
                            <Storyboard>
                                <ColorAnimation Storyboard.TargetName="Border"
                                                    Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                    To="White"
                                                    Duration="0:0:0.1" />
                                <ThicknessAnimation Storyboard.TargetName="Ellipse"
                                                        Storyboard.TargetProperty="Margin"
                                                        To="2 1 2 1"
                                                        Duration="0:0:0.1" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Using this, I am able to have any size toggle button I want and it will still look the same. Thank goodness for view boxes! 🙌

Here is a little GIF showing the toggle button in action. I left it to just resize depending on the actual window to demonstrate it’s scalability:

Enjoy!