private void Move()
{
if (_draggingContainer.ItemContainerGenerator.Status != GeneratorStatus.ContainersGenerated)
{
return;
}
var screenPos = new Win32.POINT();
if (!Win32.GetCursorPos(ref screenPos))
{
return;
}
var posToPanel = treeView.PointFromScreen(new Point(screenPos.X, screenPos.Y));
var draggingRect = new Rect(posToPanel.X - _cacheMouseDownPosToChild.X, posToPanel.Y - _cacheMouseDownPosToChild.Y, _draggingContainer.ActualWidth, _draggingContainer.ActualHeight);
if (DoubleUtil.GreaterThan(draggingRect.X, treeView.ActualWidth * 3 / 4) ||
DoubleUtil.LessThan(draggingRect.Right, treeView.ActualWidth / 4) ||
DoubleUtil.LessThan(draggingRect.Bottom, 0) ||
DoubleUtil.GreaterThan(draggingRect.Y, treeView.ActualHeight))
{
return;
}
var sourcePos = _draggingContainer.TranslatePoint(new Point(), treeView);
var isSuccess = false;
if (MoveDirection(sourcePos, draggingRect))
{
isSuccess = MoveUp(treeView, draggingRect, ref _draggingContainer, ref _lastOverlapContainer, ref _startOverlapTime);
}
else
{
isSuccess = MoveDown(treeView, draggingRect, ref _draggingContainer, ref _lastOverlapContainer, ref _startOverlapTime);
}
if (isSuccess && _draggingContainer != null)
{
_draggingContainer.Focus();
_draggingContainer.Opacity = 0.2;
_testSource.ItemsChangedFlag = !_testSource.ItemsChangedFlag;
}
}
private void CheckNewGroupContainerGenerator(ItemContainerGenerator newGroupGenerator)
{
if (newGroupGenerator.Status < GeneratorStatus.ContainersGenerated)
{
EventHandler handler = null;
handler = (s, e) =>
{
var generator = (ItemContainerGenerator)s;
if (_draggingContainer == null)
{
generator.StatusChanged -= handler;
}
else
{
if (generator.Status == GeneratorStatus.ContainersGenerated)
{
_draggingContainer = generator.ContainerFromIndex(1) as MultiSelectTreeViewItem;
if (_draggingContainer != null)
{
_draggingContainer.Focus();
_draggingContainer.Opacity = 0.2;
}
generator.StatusChanged -= handler;
}
}
};
newGroupGenerator.StatusChanged += handler;
}
else
{
_draggingContainer = newGroupGenerator.ContainerFromIndex(1) as MultiSelectTreeViewItem;
}
}