Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / Animation / AnimationTimeline.cs / 1 / AnimationTimeline.cs
// AnimationTimeline.cs using System; using System.Diagnostics; using System.Windows; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media.Animation { ////// /// public abstract class AnimationTimeline : Timeline { ////// /// protected AnimationTimeline() : base() { } #region Dependency Properties private static void AnimationTimeline_PropertyChangedFunction(DependencyObject d, DependencyPropertyChangedEventArgs e) { ((AnimationTimeline)d).PropertyChanged(e.Property); } ////// /// public static readonly DependencyProperty IsAdditiveProperty = DependencyProperty.Register( "IsAdditive", // Property Name typeof(bool), // Property Type typeof(AnimationTimeline), // Owner Class new PropertyMetadata(false, new PropertyChangedCallback(AnimationTimeline_PropertyChangedFunction))); ////// /// public static readonly DependencyProperty IsCumulativeProperty = DependencyProperty.Register( "IsCumulative", // Property Name typeof(bool), // Property Type typeof(AnimationTimeline), // Owner Class new PropertyMetadata(false, new PropertyChangedCallback(AnimationTimeline_PropertyChangedFunction))); #endregion #region Freezable ////// Creates a copy of this AnimationTimeline. /// ///The copy. public new AnimationTimeline Clone() { return (AnimationTimeline)base.Clone(); } #endregion #region Timeline ////// /// ///protected internal override Clock AllocateClock() { return new AnimationClock(this); } /// /// Creates a new AnimationClock using this AnimationTimeline. /// ///A new AnimationClock. new public AnimationClock CreateClock() { return (AnimationClock)base.CreateClock(); } #endregion ////// Calculates the value this animation believes should be the current value for the property. /// /// /// This value is the suggested origin value provided to the animation /// to be used if the animation does not have its own concept of a /// start value. If this animation is not the first in a composition /// chain this value will be the value returned by the previous /// animation in the chain with an animationClock that is not Stopped. /// /// /// This value is the suggested destination value provided to the animation /// to be used if the animation does not have its own concept of an /// end value. If this animation is not the first in a composition /// chain this value will be the value returned by the previous /// animation in the chain with an animationClock that is not Stopped. /// /// /// This is the animationClock which can generate the CurrentTime or /// CurrentProgress value to be used by the animation to generate its /// output value. /// ////// The value this animation believes should be the current value for the property. /// public virtual object GetCurrentValue(object defaultOriginValue, object defaultDestinationValue, AnimationClock animationClock) { ReadPreamble(); return defaultDestinationValue; } ////// Provide a custom natural Duration when the Duration property is set to Automatic. /// /// /// The Clock whose natural duration is desired. /// ////// A Duration quantity representing the natural duration. Default is 1 second for animations. /// protected override Duration GetNaturalDurationCore(Clock clock) { return new TimeSpan(0, 0, 1); } ////// Returns the type of the animation. /// ///public abstract Type TargetPropertyType { get; } /// /// This property is implemented by the animation to return true if the /// animation uses the defaultDestinationValue parameter to the /// GetCurrentValue method as its destination value. Specifically, if /// Progress is equal to 1.0, will this animation return the /// default destination value as its current value. /// public virtual bool IsDestinationDefault { get { ReadPreamble(); return false; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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