public static void ScrollSkip(this ItemsControl listbox, int count)
{
ScrollViewer scrollHost = VisualTreeHelper.GetChild(listbox, 0) as ScrollViewer;
for (DependencyObject obj2 = listbox; obj2 != null; obj2 = VisualTreeHelper.GetChild(obj2, 0))
{
ScrollViewer viewer = obj2 as ScrollViewer;
if (viewer != null)
{
scrollHost = viewer;
break;
}
}
if (scrollHost != null && scrollHost.IsLoaded)
{
double fromHorizontalOffset = scrollHost.HorizontalOffset;
double toHorizontalOffset = 0.0;
double fromVerticalOffset = scrollHost.VerticalOffset;
double toVerticalOffset = 0.0;
toHorizontalOffset = (scrollHost.ExtentWidth / listbox.Items.Count) * count + fromHorizontalOffset;
toVerticalOffset = (scrollHost.ExtentHeight / listbox.Items.Count) * count + fromVerticalOffset;
if (ScrollViewer.GetHorizontalScrollBarVisibility(listbox) != ScrollBarVisibility.Disabled)
{
DoubleAnimation animation = new DoubleAnimation(fromHorizontalOffset, toHorizontalOffset, new TimeSpan(0, 0, 0, 0, 800), FillBehavior.HoldEnd);
scrollHost.BeginAnimation(ItemControlExtentionMethods.HorizontalOffsetProperty, animation);
}
if (ScrollViewer.GetVerticalScrollBarVisibility(listbox) != ScrollBarVisibility.Disabled)
{
DoubleAnimation animation = new DoubleAnimation(fromVerticalOffset, toVerticalOffset, new TimeSpan(0, 0, 0, 0, 800), FillBehavior.HoldEnd);
scrollHost.BeginAnimation(ItemControlExtentionMethods.VerticalOffsetProperty, animation);
}
}
}
private static void AnimateScroll(ScrollViewer scrollViewer, double ToValue)
{
scrollViewer.BeginAnimation(VerticalOffsetProperty, null);
DoubleAnimation verticalAnimation = new DoubleAnimation();
verticalAnimation.From = scrollViewer.VerticalOffset;
verticalAnimation.To = ToValue;
verticalAnimation.Duration = new Duration(GetTimeDuration(scrollViewer));
scrollViewer.BeginAnimation(VerticalOffsetProperty, verticalAnimation);
}
private void BeginScrollViewerAnimation(double animationOffset)
{
EasingFunctionBase easeFunction = new CubicEase
{
EasingMode = EasingMode.EaseOut
};
var doubleAnimation = new DoubleAnimation
{
Duration = new Duration(TimeSpan.FromSeconds(0.6)),
EasingFunction = easeFunction
};
recordAnimationOffset = recordAnimationOffset + animationOffset;
if (recordAnimationOffset > PART_ScrollViewer.ExtentHeight
||
recordAnimationOffset < 0)
{
recordAnimationOffset = recordAnimationOffset - animationOffset;
return;
}
doubleAnimation.To = recordAnimationOffset;
doubleAnimation.Completed += DoubleAnimation_Completed;
PART_ScrollViewer.BeginAnimation(ScrollViewerBehavior.VerticalOffsetProperty, doubleAnimation);
PART_ScrollViewer.ScrollToVerticalOffset(PART_ScrollViewer.VerticalOffset + recordAnimationOffset);
}
public static void ScrollToOffset(ScrollViewer scrollViewer, Orientation orientation, double offset, double duration = 500, IEasingFunction easingFunction = null)
{
var animation = new DoubleAnimation(offset, TimeSpan.FromMilliseconds(duration));
easingFunction ??= new CubicEase
{
EasingMode = EasingMode.EaseOut
};
animation.EasingFunction = easingFunction;
animation.FillBehavior = FillBehavior.Stop;
animation.Completed += (s, e1) =>
{
if (orientation == Orientation.Vertical)
{
SetCurrentVerticalOffset(scrollViewer, offset);
}
else
{
SetCurrentHorizontalOffset(scrollViewer, offset);
}
SetIsAnimating(scrollViewer, false);
};
SetIsAnimating(scrollViewer, true);
scrollViewer.BeginAnimation(orientation == Orientation.Vertical ? CurrentVerticalOffsetProperty : CurrentHorizontalOffsetProperty, animation, HandoffBehavior.Compose);
}
public static void ScrollToSelectedItem(this ItemsControl listbox, object selectedItem)
{
ScrollViewer scrollHost = VisualTreeHelper.GetChild(listbox, 0) as ScrollViewer;
for (DependencyObject obj2 = listbox; obj2 != null; obj2 = VisualTreeHelper.GetChild(obj2, 0))
{
ScrollViewer viewer = obj2 as ScrollViewer;
if (viewer != null)
{
scrollHost = viewer;
break;
}
}
if (scrollHost != null && scrollHost.IsLoaded)
{
double fromValue = scrollHost.HorizontalOffset;
double toValue = 0.0;
if (selectedItem != null)
{
FrameworkElement visual = listbox.ItemContainerGenerator.ContainerFromItem(selectedItem) as FrameworkElement;
if (visual != null)
{
Vector vector = VisualTreeHelper.GetOffset(visual);
toValue = (visual.ActualWidth - scrollHost.ViewportWidth) / 2 + vector.X;
}
}
DoubleAnimation animation = new DoubleAnimation(fromValue, toValue, new TimeSpan(0, 0, 0, 0, 500), FillBehavior.HoldEnd);
scrollHost.BeginAnimation(ItemControlExtentionMethods.HorizontalOffsetProperty, animation);
}
}
static void OnAnimatedVerticalOffsetChanged(DependencyObject target, DependencyPropertyChangedEventArgs e)
{
ScrollViewer scrollViewer = target as ScrollViewer;
double difference = ((double)e.NewValue - (double)e.OldValue);
//Debug.WriteLine("Scroll animation difference: " + difference);
/*double toVal = Math.Max(scrollViewer.VerticalOffset + difference, GetPointsToScroll(scrollViewer));
*
* if (difference < 0)
* toVal = Math.Min(scrollViewer.VerticalOffset + difference, -GetPointsToScroll(scrollViewer));
*
* if (toVal < 0)
* toVal = 0;
* else if (toVal > scrollViewer.ScrollableHeight)
* toVal = scrollViewer.ScrollableHeight;*/
DoubleAnimation verticalAnimation = new DoubleAnimation()
{
From = scrollViewer.VerticalOffset,
To = (double)e.NewValue,//scrollViewer.VerticalOffset + difference, //toVal,
EasingFunction = GetEasingFunction(scrollViewer),
Duration = new Duration(GetTimeDuration(scrollViewer))
};
scrollViewer.BeginAnimation(VerticalOffsetProperty, verticalAnimation);
}
public void GridUp(Grid grid, ScrollViewer scrollViewer, Rectangle border)
{
Thickness from = new Thickness();
from.Bottom = 314;
from.Right = 28;
Thickness to = new Thickness();
to.Bottom = 19;
to.Right = 28;
ThicknessAnimation downAnimation = new ThicknessAnimation();
downAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.5));
downAnimation.From = from;
downAnimation.To = to;
grid.BeginAnimation(Grid.MarginProperty, downAnimation);
Thickness from2 = new Thickness();
from2.Bottom = 100;
Thickness to2 = new Thickness();
to2.Bottom = 11;
downAnimation.From = from2;
downAnimation.To = to2;
scrollViewer.BeginAnimation(ScrollViewer.MarginProperty, downAnimation);
border.BeginAnimation(Border.MarginProperty, downAnimation);
scrollViewer.Visibility = Visibility.Visible;
border.Visibility = Visibility.Visible;
}
private static void AnimateScroll(ScrollViewer scrollViewer, double ToValue)
{
scrollViewer.BeginAnimation(ScrollAnimationBehavior.VerticalOffsetProperty, null);
DoubleAnimation verticalAnimation = new DoubleAnimation
{
From = scrollViewer.VerticalOffset,
To = ToValue,
Duration = TimeSpan.FromSeconds(0.7),
EasingFunction = new ExponentialEase
{
EasingMode = EasingMode.EaseOut,
Exponent = 1.2
}
};
scrollViewer.BeginAnimation(ScrollAnimationBehavior.VerticalOffsetProperty, verticalAnimation);
}
public void chooselistmoveoin(ScrollViewer sc)
{
ThicknessAnimation anim2 = new ThicknessAnimation();
anim2.From = new Thickness(0, 0, 0, 0);
anim2.To = new Thickness(315, 0, 0, 0);
anim2.Duration = TimeSpan.FromSeconds(0.36);
sc.BeginAnimation(MarginProperty, anim2);
}
public static void AnimateScrollviewer(ScrollViewer scroll, System.Windows.Thickness toThickness)
{
ThicknessAnimation animation = new ThicknessAnimation()
{
AccelerationRatio = .9,
Duration = TimeSpan.FromSeconds(.3),
To = toThickness
};
scroll.BeginAnimation(ScrollViewer.MarginProperty, animation);
}
private static void ScrollToVerticalOffsetInternal(ScrollViewer scrollViewer, double offset)
{
var animation = new DoubleAnimation(offset, TimeSpan.FromMilliseconds(500));
animation.EasingFunction = new CubicEase
{
EasingMode = EasingMode.EaseOut
};
animation.FillBehavior = FillBehavior.Stop;
animation.Completed += (s, e1) =>
{
SetCurrentVerticalOffset(scrollViewer, offset);
SetIsAnimating(scrollViewer, false);
};
SetIsAnimating(scrollViewer, true);
scrollViewer.BeginAnimation(CurrentVerticalOffsetProperty, animation, HandoffBehavior.Compose);
}
public void GridDown(Grid grid, ScrollViewer scrollViewer, Rectangle border)
{
Thickness from = new Thickness();
from.Bottom = 314;
from.Right = 28;
Thickness to = new Thickness();
to.Bottom = 19;
to.Right = 28;
ThicknessAnimation downAnimation = new ThicknessAnimation();
ThicknessAnimation downAnimationScroll = new ThicknessAnimation();
Thickness top = new Thickness();
to.Bottom = 29;
to.Right = 28;
ThicknessAnimationUsingKeyFrames jumpAnimation = new ThicknessAnimationUsingKeyFrames();
downAnimation.Completed += new EventHandler((o, ex) =>
{
scrollViewer.Visibility = Visibility.Hidden;
border.Visibility = Visibility.Hidden;
});
downAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.5));
downAnimation.From = to;
downAnimation.To = from;
grid.BeginAnimation(Grid.MarginProperty, downAnimation);
Thickness from2 = new Thickness();
from2.Bottom = 100;
Thickness to2 = new Thickness();
to2.Bottom = 11;
downAnimation.From = to2;
downAnimation.To = from2;
scrollViewer.BeginAnimation(ScrollViewer.MarginProperty, downAnimation);
border.BeginAnimation(Border.MarginProperty, downAnimation);
}