ObjectAnimationUsingKeyFrames 类
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
public ref class ObjectAnimationUsingKeyFrames sealed : Timeline
/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.UI.Xaml.Markup.ContentProperty(Name="KeyFrames")]
class ObjectAnimationUsingKeyFrames final : Timeline
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.UI.Xaml.Markup.ContentProperty(Name="KeyFrames")]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class ObjectAnimationUsingKeyFrames final : Timeline
[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.UI.Xaml.Markup.ContentProperty(Name="KeyFrames")]
public sealed class ObjectAnimationUsingKeyFrames : Timeline
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.UI.Xaml.Markup.ContentProperty(Name="KeyFrames")]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class ObjectAnimationUsingKeyFrames : Timeline
Public NotInheritable Class ObjectAnimationUsingKeyFrames
Inherits Timeline
<ObjectAnimationUsingKeyFrames>oneOrMoreDiscreteObjectKeyFrames</ObjectAnimationUsingKeyFrames>
- 继承
- 属性
Windows 要求
设备系列 |
Windows 10 (在 10.0.10240.0 中引入)
|
API contract |
Windows.Foundation.UniversalApiContract (在 v1.0 中引入)
|
示例
以下示例使用 ObjectAnimationUsingKeyFrames 类对 Rectangle 的 Fill 属性进行动画处理。 此动画按以下方式使用两个关键帧:
- 使用 DiscreteObjectKeyFrame 时,Rectangle 的 Fill 属性在动画的前两秒后突然更改为 LinearGradientBrush。
- 动画的第三秒后, Fill 属性突然更改为不同的 LinearGradientBrush,该属性一直保留到动画结束 (四秒的总) 。
<StackPanel>
<StackPanel.Resources>
<Storyboard x:Name="myStoryboard">
<!-- ObjectAnimationUsingKeyFrames is used to animate properties that take
an object as a value. This animation lasts for 4 seconds using 3 KeyFrames which
swap different brush objects at regular intervals, making the background of the Page
change. -->
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="animatedRectangle"
Storyboard.TargetProperty="Fill"
Duration="0:0:4" RepeatBehavior="Forever">
<ObjectAnimationUsingKeyFrames.KeyFrames>
<!-- Note: Only discrete interpolation (DiscreteObjectKeyFrame) is available for
use with ObjectAnimationUsingKeyFrames which merely swaps objects according to
a specified timeline. Other types of interpolation are too problematic to apply
to objects. -->
<!-- Using a DiscreteObjectKeyFrame, the Fill property of the Rectangle suddenly
changes to a LinearGradientBrush after the first two seconds of the animation. -->
<DiscreteObjectKeyFrame KeyTime="0:0:2">
<DiscreteObjectKeyFrame.Value>
<LinearGradientBrush>
<LinearGradientBrush.GradientStops>
<GradientStop Color="Yellow" Offset="0.0" />
<GradientStop Color="Orange" Offset="0.5" />
<GradientStop Color="Red" Offset="1.0" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
<!-- After the third second of the animation, the Fill property is suddenly changed
to a different LinearGradientBrush which remains until the end of the animation
(4 seconds total). -->
<DiscreteObjectKeyFrame KeyTime="0:0:3">
<DiscreteObjectKeyFrame.Value>
<LinearGradientBrush>
<LinearGradientBrush.GradientStops>
<GradientStop Color="White" Offset="0.0" />
<GradientStop Color="MediumBlue" Offset="0.5" />
<GradientStop Color="Black" Offset="1.0" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames.KeyFrames>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</StackPanel.Resources>
<!-- The Fill property of this rectangle is animated. -->
<Rectangle x:Name="animatedRectangle" Loaded="Rectangle_Loaded" Width="300" Height="300" />
</StackPanel>
// When the rectangle loads, begin the animation.
private void Rectangle_Loaded(object sender, RoutedEventArgs e)
{
myStoryboard.Begin();
}
' When the rectangle loads, begin the animation.
Private Sub Rectangle_Loaded(ByVal sender As Object, ByVal e As EventArgs)
myStoryboard.Begin()
End Sub
构造函数
ObjectAnimationUsingKeyFrames() |
初始化 ObjectAnimationUsingKeyFrames 类的新实例。 |
属性
AutoReverse |
获取或设置一个值,该值指示时间线在完成向前迭代后是否按相反的顺序播放。 (继承自 Timeline) |
BeginTime |
获取或设置此 时间线 应开始的时间。 (继承自 Timeline) |
Dispatcher |
获取与此 对象关联的 CoreDispatcher 。 CoreDispatcher 表示可以访问 UI 线程上的 DependencyObject 的工具,即使代码是由非 UI 线程启动的。 (继承自 DependencyObject) |
Duration |
获取或设置此时间线播放的时间长度,而不是计数重复。 (继承自 Timeline) |
EnableDependentAnimation |
获取或设置一个值,该值声明是否应允许被视为依赖动画的动画属性使用此动画声明。 |
EnableDependentAnimationProperty |
标识 EnableDependentAnimation 依赖属性。 |
FillBehavior |
获取或设置一个值,该值指定动画在其活动周期结束时的行为方式。 (继承自 Timeline) |
KeyFrames |
获取定义动画的 ObjectKeyFrame 对象的集合。 |
RepeatBehavior |
获取或设置此时间线的重复行为。 (继承自 Timeline) |
SpeedRatio |
获取或设置相对于其父级的速率,此时此 时间线的进度。 (继承自 Timeline) |
方法
ClearValue(DependencyProperty) |
清除依赖属性的本地值。 (继承自 DependencyObject) |
GetAnimationBaseValue(DependencyProperty) |
返回为依赖属性建立的任何基值,该基值适用于动画未处于活动状态的情况。 (继承自 DependencyObject) |
GetValue(DependencyProperty) |
从 DependencyObject 返回依赖属性的当前有效值。 (继承自 DependencyObject) |
ReadLocalValue(DependencyProperty) |
如果设置了本地值,则返回依赖属性的本地值。 (继承自 DependencyObject) |
RegisterPropertyChangedCallback(DependencyProperty, DependencyPropertyChangedCallback) |
注册一个通知函数,用于侦听此 DependencyObject 实例上特定 DependencyProperty 的更改。 (继承自 DependencyObject) |
SetValue(DependencyProperty, Object) |
设置 DependencyObject 上依赖属性的本地值。 (继承自 DependencyObject) |
UnregisterPropertyChangedCallback(DependencyProperty, Int64) |
取消以前通过调用 RegisterPropertyChangedCallback 注册的更改通知。 (继承自 DependencyObject) |
事件
Completed |
在 Storyboard 对象完成播放时发生。 (继承自 Timeline) |