按照我find的唯一文档,我尝试了以下XAML:
<Image Name="testImage" Source="https://upload.wikimedia.org/wikipedia/commons/c/c4/PM5544_with_non-PAL_signals.png" Width="800">
<animations:Implicit.Animations>
<animations:ScalarAnimation Target="Translation.Y" ImplicitTarget="Offset" Duration="0:0:4"/>
<animations:ScalerAnimation Target="Opacity" Duration="0:0:4" />
</animations:Implicit.Animations>
</Image>
以下代码有效,不透明度设置动画并需要4秒才能淡出:
private void myButton_Tapped(object sender, TappedRoutedEventArgs e)
{
testImage.Opacity = 0.2;
}
但我无法弄清楚如何触发翻译动画(或旋转或缩放)。我试过这个:
private void myButton_Tapped(object sender, TappedRoutedEventArgs e)
{
var translate = new TranslateTransform();
translate.Y = 400;
testImage.RenderTransform = translate;
}
而且这也希望隐含会覆盖持续时间,但没有运气:
private void myButton_Tapped(object sender, TappedRoutedEventArgs e)
{
testImage.Offset(0, 400, 0).Start();
}
更改将应用于这些,但没有4秒动画。
答案 0 :(得分:2)
TranslateTransform
是RenderTransform
,与您想要实现的Composition
转换无关,Offset
隐式动画会覆盖XAML设置。
要使其有效,您需要抓住ElementVisual
,然后直接更改Offset
:
private void myButton_Tapped( object sender, TappedRoutedEventArgs e )
{
var imageVisual = ElementCompositionPreview.GetElementVisual( testImage );
imageVisual.Offset = new Vector3( 0, 400, 0 );
}