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Scale

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Warning

This behavior is no longer available in the Windows Community Toolkit. Please refer to the docs for the AnimationSet and ImplicitAnimationSet types instead.

The Scale animation allows you to change a control's scale by increasing or decreasing the control through animation. Scale animation is applied to all the XAML elements in its parent control/panel. Scale animation doesn't affect the functionality of the control.

Try it in the sample app

Syntax

<Page ...
    xmlns:interactivity="using:Microsoft.Xaml.Interactivity"
    xmlns:behaviors="using:Microsoft.Toolkit.Uwp.UI.Animations.Behaviors"/>

<interactivity:Interaction.Behaviors>
    <behaviors:Scale x:Name="Scale" ScaleX="2.0"
                     ScaleY="2.0" CenterX="0.0"
                     CenterY="0.0" Duration="1000" 
                     Delay="500" EasingType="Linear"
                     AutomaticallyStart="True"/>
</interactivity:Interaction.Behaviors>

MyUIElement.Scale(scaleX: 2, scaleY: 2, centerX: 0, centerY: 0, duration: 2500, delay: 250, easingType: EasingType.Default).Start();

MyUIElement.Scale(scaleX:=2, scaleY:=2, centerX:=0, centerY:=0, duration:=2500, delay:=250, easingType:=EasingType.[Default]).Start()

Sample Output

Scale Behavior animation

Properties

Property Type Description
ScaleX float The scale on the x axis
ScaleY float The scale on the y axis
CenterX float The center x in pixels
CenterY float The center y in pixels
Duration double The duration in milliseconds
Delay double The delay for the animation to begin
EasingType EasingType Used to describe how the animation interpolates between keyframes

EasingType

You can change the way how the animation interpolates between keyframes by defining the EasingType.

EasingType Explanation Graphical Explanation
Default Creates an animation that accelerates with the default EasingType which is specified in AnimationExtensions.DefaultEasingType which is by default Cubic
Linear Creates an animation that accelerates or decelerates linear
Back Retracts the motion of an animation slightly before it begins to animate in the path indicated BackEase
Bounce Creates a bouncing effect BounceEase
Circle Creates an animation that accelerates or decelerates using a circular function CircleEase
Cubic Creates an animation that accelerates or decelerates using the formula f(t) = t3 CubicEase
Elastic Creates an animation that resembles a spring oscillating back and forth until it comes to rest ElasticEase
Quadratic Creates an animation that accelerates or decelerates using the formula f(t) = t2 QuadraticEase
Quartic Creates an animation that accelerates or decelerates using the formula f(t) = t4 QuarticEase
Quintic Create an animation that accelerates or decelerates using the formula f(t) = t5 QuinticEase
Sine Creates an animation that accelerates or decelerates using a sine formula SineEase

Methods

Methods Return Type Description
Scale(AnimationSet, Single, Single, Single, Single, Double, Double, EasingType) AnimationSet Animates the scale of the the specified UIElement
Scale(UIElement, Single, Single, Single, Single, Double, Double, EasingType) AnimationSet Animates the scale of the the specified UIElement

Examples

  • Use this to create popup effect

    Sample Code

    UIElement lastTapped = null;
private void MyUIElement_Tapped(object sender, TappedRoutedEventArgs e)
{
    if (lastTapped != null)
    {
        lastTapped.Scale(centerX: 50, centerY: 50).Start();
        Canvas.SetZIndex(lastTapped, 0);
    }
    lastTapped = sender as UIElement;
    Canvas.SetZIndex(lastTapped, 1);
    lastTapped.Scale(scaleX: 2, scaleY: 2, centerX: 50, centerY: 50).Start();
}

    Private lastTapped As UIElement = Nothing

Private Sub MyUIElement_Tapped(ByVal sender As Object, ByVal e As TappedRoutedEventArgs)
    If lastTapped IsNot Nothing Then
        lastTapped.Scale(centerX:=50, centerY:=50).Start()
        Canvas.SetZIndex(lastTapped, 0)
    End If

    lastTapped = TryCast(sender, UIElement)
    Canvas.SetZIndex(lastTapped, 1)
    lastTapped.Scale(scaleX:=2, scaleY:=2, centerX:=50, centerY:=50).Start()
End Sub

    Sample Output

    Use Case 1 Output

  • Use this to create chaining animations with other animations. Visit the AnimationSet documentation for more information.

    Sample Code

    var anim = MyUIElement.Light(5).Offset(offsetX: 100, offsetY: 100).Saturation(0.5).Scale(scaleX: 2, scaleY: 2);
anim.SetDurationForAll(2500);
anim.SetDelay(250);
anim.Completed += animation_completed;
anim.Start();

    Dim anim = MyUIElement.Light(5).Offset(offsetX:=100, offsetY:=100).Saturation(0.5).Scale(scaleX:=2, scaleY:=2)
anim.SetDurationForAll(2500)
anim.SetDelay(250)
AddHandler anim.Completed, AddressOf animation_completed
anim.Start()

    Sample Output

    Use Case 2 Output

Sample Project

Scale Behavior Sample Page Source. You can see this in action in the Windows Community Toolkit Sample App.

Requirements

Device family Universal, 10.0.16299.0 or higher
Namespace Microsoft.Toolkit.Uwp.UI.Animations
NuGet package Microsoft.Toolkit.Uwp.UI.Animations

API