Animatable.BeginAnimation Metoda
Definice
Důležité
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Použije animaci na zadanou DependencyProperty.
Přetížení
BeginAnimation(DependencyProperty, AnimationTimeline) |
Použije animaci na zadanou DependencyProperty. Animace se spustí při vykreslení dalšího snímku. Pokud je zadaná vlastnost již animované, použije se SnapshotAndReplace chování předání. |
BeginAnimation(DependencyProperty, AnimationTimeline, HandoffBehavior) |
Použije animaci na zadanou DependencyProperty. Animace se spustí při vykreslení dalšího snímku. Pokud je zadaná vlastnost již animované, použije se zadaný HandoffBehavior. |
BeginAnimation(DependencyProperty, AnimationTimeline)
Použije animaci na zadanou DependencyProperty. Animace se spustí při vykreslení dalšího snímku. Pokud je zadaná vlastnost již animované, použije se SnapshotAndReplace chování předání.
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)
Parametry
Vlastnost, která se má animovat.
- animation
- AnimationTimeline
Animace použitá k animaci zadané vlastnosti.
Pokud je BeginTime animace null
, všechny aktuální animace budou odebrány a aktuální hodnota vlastnosti bude uložena.
Pokud je animation
null
, všechny animace budou z vlastnosti odebrány a hodnota vlastnosti se vrátí zpět na její základní hodnotu.
Implementuje
Poznámky
Pokud má animace BeginTime, která je větší než nula, začne animace po uplynutí této doby od okamžiku vykreslení dalšího snímku.
Platí pro
BeginAnimation(DependencyProperty, AnimationTimeline, HandoffBehavior)
Použije animaci na zadanou DependencyProperty. Animace se spustí při vykreslení dalšího snímku. Pokud je zadaná vlastnost již animované, použije se zadaný HandoffBehavior.
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)
Parametry
Vlastnost, která se má animovat.
- animation
- AnimationTimeline
Animace použitá k animaci zadané vlastnosti.
Pokud je handoffBehavior
SnapshotAndReplace a BeginTime animace je null
, všechny aktuální animace budou odebrány a aktuální hodnota vlastnosti bude uložena.
Pokud je handoffBehavior
SnapshotAndReplace a animation
je odkazem na null
, všechny animace se z vlastnosti odeberou a hodnota vlastnosti se vrátí zpět k její základní hodnotě.
Pokud je handoffBehavior
Compose, tato metoda nebude mít žádný vliv, pokud animace nebo jeho BeginTime je null
.
- handoffBehavior
- HandoffBehavior
Hodnota, která určuje, jak má nová animace interagovat s všemi aktuálními animacemi, které již ovlivňují hodnotu vlastnosti.
Implementuje
Příklady
Následující příklad ukazuje, jak použít animace pomocí různých nastavení HandoffBehavior.
/*
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
Poznámky
Pokud má animace BeginTime, která je větší než nula, začne animace po uplynutí této doby od okamžiku vykreslení dalšího snímku.
Použití nástroje Compose HandoffBehavior
Při použití Storyboard, AnimationTimelinenebo AnimationClock na vlastnost pomocí ComposeHandoffBehavior, všechny objekty Clock dříve přidružené k této vlastnosti nadále využívat systémové prostředky; systém časování tyto hodiny automaticky neodebere.
Abyste se vyhnuli problémům s výkonem při použití velkého počtu hodin pomocí Compose, měli byste po dokončení odebrat komponované hodiny z animované vlastnosti. Hodiny můžete odebrat několika způsoby.
Chcete-li odebrat všechny hodiny z vlastnosti, použijte ApplyAnimationClock(DependencyProperty, AnimationClock) nebo BeginAnimation(DependencyProperty, AnimationTimeline) metodu animovaného objektu. Zadejte vlastnost, která se animuje jako první parametr, a
null
jako druhý. Tím se z vlastnosti odeberou všechny hodiny animace.Chcete-li odebrat konkrétní AnimationClock ze seznamu hodin, použijte vlastnost ControllerAnimationClock k načtení ClockControllera volání Remove metody ClockController. To se obvykle provádí v obslužné rutině události Completed hodiny. Všimněte si, že ClockControllerlze ovládat pouze kořenové hodiny; vlastnost Controller podřízených hodin vrátí
null
. Všimněte si také, že Completed událost nebude volána, pokud je efektivní doba trvání hodin navždy. V takovém případě bude uživatel muset určit, kdy volat Remove.
Jedná se především o problém s animacemi na objektech, které mají dlouhou životnost. Když je objekt uvolněn z paměti, jeho hodiny budou také odpojeny a uvolňování paměti.
Další informace o objektech hodin naleznete v animace a časování systému přehled.