void DoInterimManipulation()
{
var total = manipulationStart - manipulationEnd;
var viewport = FindViewport(this);
if (viewport != null)
{
var firstVisibleItem = GetFirstVisibleItem();
if (firstVisibleItem != null && ItemsSource.Count > 0 && firstVisibleItem == ItemsSource[0])
{
if (Math.Abs(total) > pullDownOffset)
{
var orientationManager = _orientationManager == null ? (_orientationManager = Styles.Resources["orientationManager"] as OrientationManager) : _orientationManager;
var adjustedTotal = -total;
if (orientationManager != null)
{
if(orientationManager.Orientation == PageOrientation.LandscapeLeft)
{
adjustedTotal = total;
}
}
if(adjustedTotal > pullDownOffset)
Compression(this, new CompressionEventArgs(CompressionType.Top));
else
Compression(this, new CompressionEventArgs(CompressionType.None));
}
else
Compression(this, new CompressionEventArgs(CompressionType.None));
}
else
{
Compression(this, new CompressionEventArgs(CompressionType.None));
}
}
}
void listbox_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
var pos = e.GetPosition(null);
var orientationManager = _orientationManager == null ? (_orientationManager = Styles.Resources["orientationManager"] as OrientationManager) : _orientationManager;
var val = pos.Y;
if (orientationManager != null
&& (orientationManager.Orientation == PageOrientation.Landscape
|| orientationManager.Orientation == PageOrientation.LandscapeLeft
|| orientationManager.Orientation == PageOrientation.LandscapeRight))
val = pos.X;
if (!isMoving)
{
manipulationStart = val;
}
else
{
manipulationEnd = val;
if (ManipulationState == System.Windows.Controls.Primitives.ManipulationState.Manipulating)
{
DoInterimManipulation();
}
}
isMoving = true;
}