private static void OnPreviewMouseMove(object sender, MouseEventArgs e)
{
ScrollViewer scrollViewer = (ScrollViewer)sender;
if (scrollViewer.IsMouseCaptured)
{
Point currentPoint = e.GetPosition(scrollViewer);
Point scrollStartPoint = GetScrollStartPoint(scrollViewer);
// Determine the new amount to scroll.
Point delta = new Point(scrollStartPoint.X - currentPoint.X,
scrollStartPoint.Y - currentPoint.Y);
Point scrollStartOffset = GetScrollStartOffset(scrollViewer);
Point scrollTarget = new Point(scrollStartOffset.X + delta.X,
scrollStartOffset.Y + delta.Y);
InertiaHandler inertiaProcessor = GetInertiaProcessor(scrollViewer);
if (inertiaProcessor != null)
{
inertiaProcessor.ScrollTarget = scrollTarget;
}
// Scroll to the new position.
scrollViewer.ScrollToHorizontalOffset(scrollTarget.X);
scrollViewer.ScrollToVerticalOffset(scrollTarget.Y);
}
}
/// <summary>
/// Sets the InertiaProcessor property. This dependency property
/// indicates ....
/// </summary>
private static void SetInertiaProcessor(DependencyObject d, InertiaHandler value)
{
d.SetValue(InertiaProcessorProperty, value);
}
/// <summary>
/// Sets the InertiaProcessor property. This dependency property
/// indicates ....
/// </summary>
private static void SetInertiaProcessor(DependencyObject d, InertiaHandler value)
{
d.SetValue(InertiaProcessorProperty, value);
}
