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방법: Storyboard 애니메이션 간의 HandoffBehavior 지정

이 예제에서는 스토리보드 애니메이션 간에 핸드오프 동작을 지정하는 방법을 보여 줍니다. BeginStoryboardHandoffBehavior 속성은 새 애니메이션이 이미 속성에 적용된 기존 애니메이션과 상호 작용하는 방법을 지정합니다.

예제

다음 예제에서는 마우스 커서를 위로 이동할 때 확대되고 커서가 멀리 이동할 때 더 작아지는 두 개의 단추를 만듭니다. 단추를 마우스로 클릭한 다음, 커서를 빠르게 제거하면 첫 번째 애니메이션이 완료되기 전에 두 번째 애니메이션이 적용됩니다. 이처럼 두 애니메이션이 겹치면 ComposeSnapshotAndReplaceHandoffBehavior 값 간의 차이를 볼 수 있습니다. Compose 값은 겹치는 애니메이션을 결합하여 애니메이션 간에 더 원활하게 전환하고 SnapshotAndReplace 값이 있으면 새 애니메이션이 이전의 겹치는 애니메이션을 즉시 대체합니다.

<Page 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Page.Resources>
    <!-- This Style specifies mouseover and mouseout behaviors. The button gets larger when
    the cursor moves over it and smaller when the cursor moves away. Note that the same Properties
    (ScaleX and ScaleY) are being targeted by both animations. The BeginStoryboard for each animation
    uses a HandoffBehavior of "Compose" which causes the old animation to interpolate more gradually into
    the new one. -->
    <Style x:Key="ButtonWithCompose" TargetType="{x:Type Button}">
      <Setter Property="Button.RenderTransform">
        <Setter.Value>
          <ScaleTransform CenterX="50" CenterY="50" ScaleX="1" ScaleY="1" />
        </Setter.Value>
      </Setter>
      <Style.Triggers>
        <EventTrigger RoutedEvent="Mouse.MouseEnter">
          <EventTrigger.Actions>
            <BeginStoryboard >
              <Storyboard>
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleX" To="3"  />
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleY" To="3"  />
              </Storyboard>
            </BeginStoryboard>
          </EventTrigger.Actions>
        </EventTrigger>
        <EventTrigger RoutedEvent="Mouse.MouseLeave">
          <EventTrigger.Actions>
            <BeginStoryboard HandoffBehavior="Compose">
              <Storyboard>
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleX" />
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleY" />
              </Storyboard>
            </BeginStoryboard>
          </EventTrigger.Actions>
        </EventTrigger>
      </Style.Triggers>
    </Style>
    <!-- For this button style, BeginStoryboard uses the default HandoffBehavior of "SnapShotAndReplace" -->
    <Style x:Key="ButtonWithSnapShotAndReplace" TargetType="{x:Type Button}">
      <Setter Property="Button.RenderTransform">
        <Setter.Value>
          <ScaleTransform CenterX="50" CenterY="50" ScaleX="1" ScaleY="1" />
        </Setter.Value>
      </Setter>
      <Style.Triggers>
        <EventTrigger RoutedEvent="Mouse.MouseEnter">
          <EventTrigger.Actions>
            <BeginStoryboard >
              <Storyboard>
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleX" To="3"  />
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleY" To="3"  />
              </Storyboard>
            </BeginStoryboard>
          </EventTrigger.Actions>
        </EventTrigger>
        <EventTrigger RoutedEvent="Mouse.MouseLeave">
          <EventTrigger.Actions>
            <BeginStoryboard>
              <Storyboard>
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleX" />
                <DoubleAnimation Duration="0:0:2" Storyboard.TargetProperty="RenderTransform.ScaleY" />
              </Storyboard>
            </BeginStoryboard>
          </EventTrigger.Actions>
        </EventTrigger>
      </Style.Triggers>
    </Style>
  </Page.Resources>
  <Canvas>
    <Button Style="{StaticResource ButtonWithSnapShotAndReplace}" Canvas.Top="200" Canvas.Left="200" Width="100" Height="100">
      SnapShotAndReplace
    </Button>
    <Button Style="{StaticResource ButtonWithCompose}" Canvas.Top="200" Canvas.Left="400" Width="100" Height="100">
      Compose
    </Button>
  </Canvas>
</Page>

참고 항목