private void Item_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (_MouseCaptureElement != null)
{
_MouseCaptureElement.ReleaseMouseCapture();
_MouseCaptureElement = null;
}
_MouseDownItem = null;
}
private void Item_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var fe = e.OriginalSource as FrameworkElement;
if (fe != null)
{
var item = fe.DataContext as INewItemType;
if (item != null)
{
_MouseDownItem = item;
_MouseDownPoint = e.GetPosition(this);
}
fe.CaptureMouse();
}
}
private void Item_MouseMove(object sender, MouseEventArgs e)
{
if (_MouseDownItem != null)
{
var v = e.GetPosition(this) - _MouseDownPoint;
if (Math.Abs(v.X) >= SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(v.Y) >= SystemParameters.MinimumVerticalDragDistance)
{
if (_MouseCaptureElement != null)
{
_MouseCaptureElement.ReleaseMouseCapture();
_MouseCaptureElement = null;
}
DragDrop.DoDragDrop(this, new DataObject(XDrawCore.DragDropItemType, _MouseDownItem), DragDropEffects.Copy);
_MouseDownItem = null;
}
}
}
