private void HandleDrag(object sender, Dock thumbposition, double delta)
{
BeatContainerAdorner adorner = (BeatContainerAdorner)sender;
UIElement container = adorner.AdornedElement;
TimeSpan changedSpan = ViewPort.Multiply(delta / ActualWidth);
switch (thumbposition)
{
case Dock.Left:
{
TimeSpan duration = GetDuration(container) - changedSpan;
TimeSpan position = GetPosition(container) + changedSpan;
SetDuration(container, duration);
SetPosition(container, position);
break;
}
case Dock.Right:
{
TimeSpan duration = GetDuration(container) + changedSpan;
SetDuration(container, duration);
break;
}
case Dock.Top:
{
TimeSpan position = GetPosition(container) + changedSpan;
SetPosition(container, position);
break;
}
}
}
private void IncreaseViewPort()
{
ViewPort = ViewPort.Multiply(1.5);
}
private TimeSpan LengthToTimeSpan(double length)
{
return(ViewPort.Multiply(length / ActualWidth));
}