diff options
Diffstat (limited to 'Gestor.Common/Gestor.Common.Helpers/ScrollAnimationBehavior.cs')
| -rw-r--r-- | Gestor.Common/Gestor.Common.Helpers/ScrollAnimationBehavior.cs | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/Gestor.Common/Gestor.Common.Helpers/ScrollAnimationBehavior.cs b/Gestor.Common/Gestor.Common.Helpers/ScrollAnimationBehavior.cs new file mode 100644 index 0000000..3af3b0d --- /dev/null +++ b/Gestor.Common/Gestor.Common.Helpers/ScrollAnimationBehavior.cs @@ -0,0 +1,131 @@ +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; + } +} |