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using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media.Animation;
namespace Gestor.Common.Helpers;
public static class ScrollAnimationBehavior
{
public static DependencyProperty VerticalOffsetProperty = DependencyProperty.RegisterAttached("VerticalOffset", typeof(double), typeof(ScrollAnimationBehavior), (PropertyMetadata)new UIPropertyMetadata((object)0.0, new PropertyChangedCallback(OnVerticalOffsetChanged)));
public static DependencyProperty TimeDurationProperty = DependencyProperty.RegisterAttached("TimeDuration", typeof(TimeSpan), typeof(ScrollAnimationBehavior), new PropertyMetadata((object)new TimeSpan(0, 0, 0, 0, 0)));
public static DependencyProperty PointsToScrollProperty = DependencyProperty.RegisterAttached("PointsToScroll", typeof(double), typeof(ScrollAnimationBehavior), new PropertyMetadata((object)0.0));
public static DependencyProperty IsEnabledProperty = DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(ScrollAnimationBehavior), (PropertyMetadata)new UIPropertyMetadata((object)false, new PropertyChangedCallback(OnIsEnabledChanged)));
private static double _currentToValue;
private static Storyboard _storyboard;
public static void SetTimeDuration(FrameworkElement target, TimeSpan value)
{
((DependencyObject)target).SetValue(TimeDurationProperty, (object)value);
}
public static TimeSpan GetTimeDuration(FrameworkElement target)
{
return (TimeSpan)((DependencyObject)target).GetValue(TimeDurationProperty);
}
public static void SetPointsToScroll(FrameworkElement target, double value)
{
((DependencyObject)target).SetValue(PointsToScrollProperty, (object)value);
}
private static void OnVerticalOffsetChanged(DependencyObject target, DependencyPropertyChangedEventArgs e)
{
ScrollViewer val = (ScrollViewer)(object)((target is ScrollViewer) ? target : null);
if (val != null)
{
val.ScrollToVerticalOffset((double)e.NewValue);
}
}
public static void SetIsEnabled(FrameworkElement target, bool value)
{
((DependencyObject)target).SetValue(IsEnabledProperty, (object)value);
}
private static void OnIsEnabledChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
//IL_0012: Unknown result type (might be due to invalid IL or missing references)
//IL_001c: Expected O, but got Unknown
ScrollViewer val = (ScrollViewer)(object)((sender is ScrollViewer) ? sender : null);
if (val != null)
{
((FrameworkElement)val).Loaded += new RoutedEventHandler(ScrollerLoaded);
}
}
private static void AnimateScroll(ScrollViewer scrollViewer)
{
//IL_0000: Unknown result type (might be due to invalid IL or missing references)
//IL_0005: Unknown result type (might be due to invalid IL or missing references)
//IL_000c: Unknown result type (might be due to invalid IL or missing references)
//IL_0017: Expected O, but got Unknown
//IL_002c: Unknown result type (might be due to invalid IL or missing references)
//IL_0031: Unknown result type (might be due to invalid IL or missing references)
//IL_003b: Expected O, but got Unknown
//IL_0050: Unknown result type (might be due to invalid IL or missing references)
//IL_0055: Unknown result type (might be due to invalid IL or missing references)
//IL_005a: Unknown result type (might be due to invalid IL or missing references)
//IL_0066: Expected O, but got Unknown
//IL_0061: Unknown result type (might be due to invalid IL or missing references)
//IL_006b: Expected O, but got Unknown
//IL_006c: Unknown result type (might be due to invalid IL or missing references)
//IL_0076: Expected O, but got Unknown
//IL_0093: Unknown result type (might be due to invalid IL or missing references)
//IL_009d: Expected O, but got Unknown
DoubleAnimationUsingKeyFrames val = new DoubleAnimationUsingKeyFrames
{
Duration = new Duration(GetTimeDuration((FrameworkElement)(object)scrollViewer))
};
val.KeyFrames.Add((DoubleKeyFrame)new EasingDoubleKeyFrame(scrollViewer.VerticalOffset, KeyTime.FromPercent(0.0)));
val.KeyFrames.Add((DoubleKeyFrame)new EasingDoubleKeyFrame(_currentToValue, KeyTime.FromPercent(1.0), (IEasingFunction)new SineEase
{
EasingMode = (EasingMode)1
}));
_storyboard = new Storyboard();
((TimelineGroup)_storyboard).Children.Add((Timeline)(object)val);
Storyboard.SetTarget((DependencyObject)(object)val, (DependencyObject)(object)scrollViewer);
Storyboard.SetTargetProperty((DependencyObject)(object)val, new PropertyPath((object)VerticalOffsetProperty));
_storyboard.Begin();
}
private static void SetEventHandlersForScrollViewer(ScrollViewer scroller)
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
//IL_0012: Expected O, but got Unknown
((UIElement)scroller).PreviewMouseWheel += new MouseWheelEventHandler(ScrollViewerPreviewMouseWheel);
}
private static void ScrollerLoaded(object sender, RoutedEventArgs e)
{
SetEventHandlersForScrollViewer((ScrollViewer)((sender is ScrollViewer) ? sender : null));
}
private static void ScrollViewerPreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
//IL_000e: Unknown result type (might be due to invalid IL or missing references)
//IL_0014: Expected O, but got Unknown
//IL_0035: Unknown result type (might be due to invalid IL or missing references)
//IL_003b: Invalid comparison between Unknown and I4
double currentToValue = _currentToValue;
double num = e.Delta;
ScrollViewer val = (ScrollViewer)sender;
double num2 = num * 2.0 / 3.0;
if (_storyboard == null || (int)_storyboard.GetCurrentState() == 1)
{
_currentToValue = val.VerticalOffset;
}
_currentToValue = ((num2 > _currentToValue) ? 0.0 : ((_currentToValue - num2 > val.ScrollableHeight) ? val.ScrollableHeight : (_currentToValue - num2)));
if (_currentToValue != val.VerticalOffset && _currentToValue != currentToValue)
{
AnimateScroll(val);
}
((RoutedEventArgs)e).Handled = true;
}
}
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