자이닉스 개발부

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using System.Windows;
using System.Windows.Media.Animation;

namespace CCPContentsList
{
    public class ThicknessAnimation  
    { 
        // The time along the animation from 0-1
        public static DependencyProperty TimeProperty = DependencyProperty.RegisterAttached(
            "Time", typeof(double), typeof(DoubleAnimation), new PropertyMetadata(OnTimeChanged));
        // The object being animated
        public static DependencyProperty TargetProperty = DependencyProperty.RegisterAttached(
            "Target", typeof(DependencyObject), typeof(ThicknessAnimation), null);
        // The thickness we're animating to
        public static DependencyProperty FromProperty = DependencyProperty.RegisterAttached(
            "From", typeof(Thickness), typeof(DependencyObject), null);
        // The tickness we're animating from
        public static DependencyProperty ToProperty = DependencyProperty.RegisterAttached(
            "To", typeof(Thickness), typeof(DependencyObject), null);
        // The target property to animate to.  Should have a property type of Thickness
        public static DependencyProperty TargetPropertyProperty = DependencyProperty.RegisterAttached(
            "TargetProperty", typeof(DependencyProperty), typeof(DependencyObject), null);

        /// <summary>
        /// Creates a Timeline used to animate the thickness of an object
        /// </summary>
        /// <param name="target">The object to animate</param>
        /// <param name="targetProperty">The property on the object to animate</param>
        /// <param name="duration">The length of the animation</param>
        /// <param name="from">The begining thickness</param>
        /// <param name="to">The final thickness</param>
        /// <returns>A timeline object that can be added to a storyboard</returns>
         public static Timeline Create(
             DependencyObject target, 
             DependencyProperty targetProperty, 
             Duration duration, 
             Thickness from, 
             Thickness to, 
             EasingFunctionBase ease)
         {
             DoubleAnimation timeAnimation = new DoubleAnimation() 
                    { From = 0, To = 1, Duration = duration, EasingFunction = ease };
             timeAnimation.SetValue(TargetProperty, target);
             timeAnimation.SetValue(TargetPropertyProperty, targetProperty);
             timeAnimation.SetValue(FromProperty, from);
             timeAnimation.SetValue(ToProperty, to);
             Storyboard.SetTargetProperty(timeAnimation, new PropertyPath("(ThicknessAnimation.Time)"));
             Storyboard.SetTarget(timeAnimation, timeAnimation); 
             return timeAnimation;
         }

         ///<summary>
         ///Silverlight's animation system is animating time from 0 to 1.  
         ///When time changes we update the thickness to be time
         ///percent between from and to 
         ///</summary>
         private static void OnTimeChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
         {
             DoubleAnimation animation = (DoubleAnimation)sender;
             double time = GetTime(animation);
             Thickness from = (Thickness)sender.GetValue(FromProperty);
             Thickness to = (Thickness)sender.GetValue(ToProperty);
             DependencyProperty targetProperty = (DependencyProperty)sender.GetValue(TargetPropertyProperty);
             DependencyObject target = (DependencyObject)sender.GetValue(TargetProperty);
             target.SetValue(targetProperty, new Thickness((to.Left - from.Left) * time + from.Left,
             (to.Top - from.Top) * time + from.Top,
             (to.Right - from.Right) * time + from.Right,
             (to.Bottom - from.Bottom) * time + from.Bottom));
         } 

         public static double GetTime(DoubleAnimation animation)
         {
            return (double)animation.GetValue(TimeProperty);
         }

         public static void SetTime(DoubleAnimation animation, double value)
         {
            animation.SetValue(TimeProperty, value);
         }
    }
}