Animatable.BeginAnimation Metod

public:
 virtual void BeginAnimation(System::Windows::DependencyProperty ^ dp, System::Windows::Media::Animation::AnimationTimeline ^ animation);

public void BeginAnimation(System.Windows.DependencyProperty dp, System.Windows.Media.Animation.AnimationTimeline animation);

abstract member BeginAnimation : System.Windows.DependencyProperty * System.Windows.Media.Animation.AnimationTimeline -> unit
override this.BeginAnimation : System.Windows.DependencyProperty * System.Windows.Media.Animation.AnimationTimeline -> unit

Public Sub BeginAnimation (dp As DependencyProperty, animation As AnimationTimeline)

Parametrar

Implementeringar

Kommentarer

Om animeringen har en BeginTime som är större än noll börjar animeringen efter att den tiden har förflutit från den tidpunkt då nästa bildruta återges.

public:
 virtual void BeginAnimation(System::Windows::DependencyProperty ^ dp, System::Windows::Media::Animation::AnimationTimeline ^ animation, System::Windows::Media::Animation::HandoffBehavior handoffBehavior);

public void BeginAnimation(System.Windows.DependencyProperty dp, System.Windows.Media.Animation.AnimationTimeline animation, System.Windows.Media.Animation.HandoffBehavior handoffBehavior);

abstract member BeginAnimation : System.Windows.DependencyProperty * System.Windows.Media.Animation.AnimationTimeline * System.Windows.Media.Animation.HandoffBehavior -> unit
override this.BeginAnimation : System.Windows.DependencyProperty * System.Windows.Media.Animation.AnimationTimeline * System.Windows.Media.Animation.HandoffBehavior -> unit

Public Sub BeginAnimation (dp As DependencyProperty, animation As AnimationTimeline, handoffBehavior As HandoffBehavior)

Parametrar

Implementeringar

Exempel

I följande exempel visas hur du använder animeringar med olika HandoffBehavior inställningar.

/*

This sample animates the position of an ellipse when 
the user clicks within the main border. If the user
left-clicks, the SnapshotAndReplace HandoffBehavior
is used when applying the animations. If the user
right-clicks, the Compose HandoffBehavior is used
instead.

*/

using namespace System;
using namespace System::Windows;
using namespace System::Windows::Navigation;
using namespace System::Windows::Media;
using namespace System::Windows::Media::Animation;
using namespace System::Windows::Shapes;
using namespace System::Windows::Controls;
using namespace System::Windows::Input;

namespace Microsoft {
   namespace Samples {
      namespace Animation {
         namespace LocalAnimations {
            public ref class InteractiveAnimationExample : Page {
            private: 
               TranslateTransform^ interactiveTranslateTransform;
               Border^ containerBorder;
               Ellipse^ interactiveEllipse;

            public: 
               InteractiveAnimationExample () 
               {
                  WindowTitle = "Interactive Animation Example";
                  DockPanel^ myPanel = gcnew DockPanel();
                  myPanel->Margin = Thickness(20.0);

                  containerBorder = gcnew Border();
                  containerBorder->Background = Brushes::White;
                  containerBorder->BorderBrush = Brushes::Black;
                  containerBorder->BorderThickness = Thickness(2.0);
                  containerBorder->VerticalAlignment = System::Windows::VerticalAlignment::Stretch;

                  interactiveEllipse = gcnew Ellipse();
                  interactiveEllipse->Fill = Brushes::Lime;
                  interactiveEllipse->Stroke = Brushes::Black;
                  interactiveEllipse->StrokeThickness = 2.0;
                  interactiveEllipse->Width = 25;
                  interactiveEllipse->Height = 25;
                  interactiveEllipse->HorizontalAlignment = System::Windows::HorizontalAlignment::Left;
                  interactiveEllipse->VerticalAlignment = System::Windows::VerticalAlignment::Top;

                  interactiveTranslateTransform = gcnew TranslateTransform();
                  interactiveEllipse->RenderTransform = interactiveTranslateTransform;

                  containerBorder->MouseLeftButtonDown += 
                     gcnew MouseButtonEventHandler(this, &Microsoft::Samples::Animation::LocalAnimations::InteractiveAnimationExample::border_mouseLeftButtonDown);
                  containerBorder->MouseRightButtonDown += 
                     gcnew MouseButtonEventHandler(this, &Microsoft::Samples::Animation::LocalAnimations::InteractiveAnimationExample::border_mouseRightButtonDown);
                  containerBorder->Child = interactiveEllipse;

                  myPanel->Children->Add(containerBorder);
                  this->Content = myPanel;
               };

            private: 
               // When the user left-clicks, use the 
               // SnapshotAndReplace HandoffBehavior when applying the animation.        
               void border_mouseLeftButtonDown (System::Object^ sender, System::Windows::Input::MouseButtonEventArgs^ e)
               {
                  System::Windows::Point clickPoint = Mouse::GetPosition(containerBorder);

                  // Set the target point so the center of the ellipse
                  // ends up at the clicked point.
                  Point targetPoint = Point();
                  targetPoint.X = clickPoint.X - interactiveEllipse->Width / 2;
                  targetPoint.Y = clickPoint.Y - interactiveEllipse->Height / 2;

                  // Animate to the target point.
                  DoubleAnimation^ xAnimation = gcnew DoubleAnimation(targetPoint.X,
                     Duration(TimeSpan::FromSeconds(4)));
                  interactiveTranslateTransform->BeginAnimation(TranslateTransform::XProperty, xAnimation, HandoffBehavior::SnapshotAndReplace);

                  DoubleAnimation^ yAnimation = gcnew DoubleAnimation(targetPoint.Y,
                     Duration(TimeSpan::FromSeconds(4)));
                  interactiveTranslateTransform->BeginAnimation(TranslateTransform::YProperty, yAnimation, HandoffBehavior::SnapshotAndReplace);

                  // Chage the color of the ellipse.
                  interactiveEllipse->Fill = Brushes::Lime;
               }

            private:
               // When the user right-clicks, use the 
               // Compose HandoffBehavior when applying the animation.
               void border_mouseRightButtonDown (System::Object^ sender, System::Windows::Input::MouseButtonEventArgs^ e)
               {
                  // Find the point where the use clicked.
                  Point clickPoint = Mouse::GetPosition(containerBorder);

                  // Set the target point so the center of the ellipse
                  // ends up at the clicked point.
                  Point targetPoint = System::Windows::Point();
                  targetPoint.X = clickPoint.X - interactiveEllipse->Width / 2;
                  targetPoint.Y = clickPoint.Y - interactiveEllipse->Height / 2;

                  // Animate to the target point.
                  DoubleAnimation^ xAnimation = gcnew DoubleAnimation(targetPoint.X,
                     Duration(TimeSpan::FromSeconds(4)));
                  interactiveTranslateTransform->BeginAnimation(TranslateTransform::XProperty, xAnimation, HandoffBehavior::Compose);

                  DoubleAnimation^ yAnimation = gcnew DoubleAnimation(targetPoint.Y,
                     Duration(TimeSpan::FromSeconds(4)));

                  // Change the color of the ellipse.
                  interactiveTranslateTransform->BeginAnimation(TranslateTransform::YProperty, yAnimation, HandoffBehavior::Compose);
                  interactiveEllipse->Fill = Brushes::Orange;
               }
            };
         }
      }
   }
}

/*

   This sample animates the position of an ellipse when 
   the user clicks within the main border. If the user
   left-clicks, the SnapshotAndReplace HandoffBehavior
   is used when applying the animations. If the user
   right-clicks, the Compose HandoffBehavior is used
   instead.

*/

using System;
using System.Windows;
using System.Windows.Navigation;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls;
using System.Windows.Input;

namespace Microsoft.Samples.Animation.LocalAnimations
{

    // Create the demonstration.
    public class InteractiveAnimationExample : Page {

        private TranslateTransform interactiveTranslateTransform;   
        private Border containerBorder;
        private Ellipse interactiveEllipse;
        
        public InteractiveAnimationExample()
        {
        
            WindowTitle = "Interactive Animation Example";
            DockPanel myPanel = new DockPanel();
            myPanel.Margin = new Thickness(20.0);            
    
            containerBorder = new Border();
            containerBorder.Background = System.Windows.Media.Brushes.White;
            containerBorder.BorderBrush = System.Windows.Media.Brushes.Black;
            containerBorder.BorderThickness = new Thickness(2.0); 
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch;
            
            interactiveEllipse = new Ellipse();
            interactiveEllipse.Fill = System.Windows.Media.Brushes.Lime;
            interactiveEllipse.Stroke = System.Windows.Media.Brushes.Black;
            interactiveEllipse.StrokeThickness = 2.0;
            interactiveEllipse.Width = 25;
            interactiveEllipse.Height = 25;
            interactiveEllipse.HorizontalAlignment = HorizontalAlignment.Left;
            interactiveEllipse.VerticalAlignment = VerticalAlignment.Top;
            
            interactiveTranslateTransform = new TranslateTransform();
            interactiveEllipse.RenderTransform = 
                interactiveTranslateTransform;
                
            containerBorder.MouseLeftButtonDown += 
                new MouseButtonEventHandler(border_mouseLeftButtonDown);
            containerBorder.MouseRightButtonDown += 
                new MouseButtonEventHandler(border_mouseRightButtonDown);                
            
            containerBorder.Child = interactiveEllipse;
            myPanel.Children.Add(containerBorder);
            this.Content = myPanel;
        }

        // When the user left-clicks, use the 
        // SnapshotAndReplace HandoffBehavior when applying the animation.        
        private void border_mouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            System.Windows.Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            System.Windows.Point targetPoint = new System.Windows.Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;  
            
            // Animate to the target point.
            DoubleAnimation xAnimation = 
                new DoubleAnimation(targetPoint.X, 
                new Duration(TimeSpan.FromSeconds(4)));
            interactiveTranslateTransform.BeginAnimation(
                TranslateTransform.XProperty, xAnimation, HandoffBehavior.SnapshotAndReplace);
                
            DoubleAnimation yAnimation = 
                new DoubleAnimation(targetPoint.Y, 
                new Duration(TimeSpan.FromSeconds(4))); 
            interactiveTranslateTransform.BeginAnimation(
                TranslateTransform.YProperty, yAnimation, HandoffBehavior.SnapshotAndReplace);                

            // Change the color of the ellipse.
            interactiveEllipse.Fill = System.Windows.Media.Brushes.Lime;
        }
        
        // When the user right-clicks, use the 
        // Compose HandoffBehavior when applying the animation.
        private void border_mouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
        
            // Find the point where the use clicked.
            System.Windows.Point clickPoint = Mouse.GetPosition(containerBorder);
            
            // Set the target point so the center of the ellipse
            // ends up at the clicked point.
            System.Windows.Point targetPoint = new System.Windows.Point();
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2;
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2;

            // Animate to the target point.
            DoubleAnimation xAnimation = 
                new DoubleAnimation(targetPoint.X, 
                new Duration(TimeSpan.FromSeconds(4)));
            interactiveTranslateTransform.BeginAnimation(
                TranslateTransform.XProperty, xAnimation, HandoffBehavior.Compose);
                
            DoubleAnimation yAnimation = 
                new DoubleAnimation(targetPoint.Y, 
                new Duration(TimeSpan.FromSeconds(4))); 
            interactiveTranslateTransform.BeginAnimation(
                TranslateTransform.YProperty, yAnimation, HandoffBehavior.Compose);   
                
            // Change the color of the ellipse.
            interactiveEllipse.Fill = System.Windows.Media.Brushes.Orange;
        }
    }
}

'
'
'   This sample animates the position of an ellipse when 
'   the user clicks within the main border. If the user
'   left-clicks, the SnapshotAndReplace HandoffBehavior
'   is used when applying the animations. If the user
'   right-clicks, the Compose HandoffBehavior is used
'   instead.
'
'

Imports System.Windows
Imports System.Windows.Navigation
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Shapes
Imports System.Windows.Controls
Imports System.Windows.Input

Namespace Microsoft.Samples.Animation.LocalAnimations


    ' Create the demonstration.
    Public Class InteractiveAnimationExample
        Inherits Page
        
        
        Private Dim interactiveTranslateTransform As TranslateTransform  
        Private Dim WithEvents containerBorder As Border 
        Private Dim interactiveEllipse As Ellipse
        
        Public Sub New()
        
            WindowTitle = "Interactive Animation Example"
            Dim myPanel As New DockPanel()
            myPanel.Margin = New Thickness(20.0)            
    
            containerBorder = new Border()
            containerBorder.Background = Brushes.White
            containerBorder.BorderBrush = Brushes.Black
            containerBorder.BorderThickness = new Thickness(2.0) 
            containerBorder.VerticalAlignment = VerticalAlignment.Stretch
            
            interactiveEllipse = new Ellipse()
            interactiveEllipse.Fill = Brushes.Lime
            interactiveEllipse.Stroke = Brushes.Black
            interactiveEllipse.StrokeThickness = 2.0
            interactiveEllipse.Width = 25
            interactiveEllipse.Height = 25
            interactiveEllipse.HorizontalAlignment = HorizontalAlignment.Left
            interactiveEllipse.VerticalAlignment = VerticalAlignment.Top
            
            interactiveTranslateTransform = new TranslateTransform()
            interactiveEllipse.RenderTransform = _
                interactiveTranslateTransform           
            
            containerBorder.Child = interactiveEllipse
            myPanel.Children.Add(containerBorder)
            Me.Content = myPanel
        End Sub
        

        ' When the user left-clicks, use the 
        ' SnapshotAndReplace HandoffBehavior when applying the animation.        
        Private Sub border_mouseLeftButtonDown( _
            ByVal sender As Object, ByVal e As MouseButtonEventArgs) _
            Handles containerBorder.MouseLeftButtonDown
     
        
            Dim clickPoint = Mouse.GetPosition(containerBorder)
            
            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New System.Windows.Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2  
            
            ' Animate to the target point.
            Dim xAnimation As _ 
                New DoubleAnimation(targetPoint.X,  _
                New Duration(TimeSpan.FromSeconds(4)))
            interactiveTranslateTransform.BeginAnimation( _
                TranslateTransform.XProperty, xAnimation, HandoffBehavior.SnapshotAndReplace)
                
            Dim yAnimation As _ 
                New DoubleAnimation(targetPoint.Y, _
                New Duration(TimeSpan.FromSeconds(4)))
            interactiveTranslateTransform.BeginAnimation( _
                TranslateTransform.YProperty, yAnimation, HandoffBehavior.SnapshotAndReplace)                

            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Lime
                    
        End Sub
        
        ' When the user right-clicks, use the 
        ' Compose HandoffBehavior when applying the animation.
        Private Sub border_mouseRightButtonDown( _
            ByVal sender As Object, ByVal e As MouseButtonEventArgs) _
            Handles containerBorder.MouseRightButtonDown
        
        
            ' Find the point where the use clicked.
            Dim clickPoint = Mouse.GetPosition(containerBorder)
            
            ' Set the target point so the center of the ellipse
            ' ends up at the clicked point.
            Dim targetPoint As New System.Windows.Point()
            targetPoint.X = clickPoint.X - interactiveEllipse.Width / 2
            targetPoint.Y = clickPoint.Y - interactiveEllipse.Height / 2
            
            ' Animate to the target point.
            Dim xAnimation As _
                New DoubleAnimation(targetPoint.X, _
                New Duration(TimeSpan.FromSeconds(4)))
            interactiveTranslateTransform.BeginAnimation( _
                TranslateTransform.XProperty, xAnimation, HandoffBehavior.Compose)
                
            Dim yAnimation As _ 
                New DoubleAnimation(targetPoint.Y, _
                New Duration(TimeSpan.FromSeconds(4))) 
            interactiveTranslateTransform.BeginAnimation( _
                TranslateTransform.YProperty, yAnimation, HandoffBehavior.Compose)   
                
            ' Change the color of the ellipse.
            interactiveEllipse.Fill = Brushes.Orange
            
                    
        End Sub
        
    End Class
 
End Namespace

Kommentarer

Om animeringen har en BeginTime som är större än noll börjar animeringen efter att den tiden har förflutit från den tidpunkt då nästa bildruta återges.

Använda Compose HandoffBehavior

När du tillämpar en Storyboard, AnimationTimelineeller AnimationClock på en egenskap med hjälp av ComposeHandoffBehaviorfortsätter alla Clock objekt som tidigare var associerade med den egenskapen att förbruka systemresurser. tidsschemat tar inte bort dessa klockor automatiskt.

För att undvika prestandaproblem när du använder ett stort antal klockor med hjälp av Composebör du ta bort komponerande klockor från den animerade egenskapen när de har slutförts. Det finns flera sätt att ta bort en klocka.

• Om du vill ta bort alla klockor från en egenskap använder du metoden ApplyAnimationClock(DependencyProperty, AnimationClock) eller BeginAnimation(DependencyProperty, AnimationTimeline) för det animerade objektet. Ange egenskapen som ska animeras som den första parametern och null som den andra. Då tas alla animeringsklockor bort från egenskapen.

• Om du vill ta bort en specifik AnimationClock från en lista med klockor använder du egenskapen Controller för AnimationClock för att hämta en ClockControlleroch anropar sedan metoden Remove för ClockController. Detta görs vanligtvis i Completed händelsehanterare för en klocka. Observera att endast rotklockor kan styras av en ClockController; egenskapen Controller för en sekundärklocka returnerar null. Observera också att händelse Completed inte anropas om den effektiva varaktigheten för klockan är oändlig. I så fall måste användaren bestämma när Removeska anropas.

Det här är främst ett problem för animeringar på objekt som har en lång livslängd. När ett objekt är skräpinsamling kopplas även klockorna från och skräp samlas in.

Mer information om klockobjekt finns i Översikt över animerings- och tidsschemasystem.