private void SceneTreeView_GiveFeedback(object sender, GiveFeedbackEventArgs e)
{
// update the position of the visual feedback item
Win32Point w32Mouse = new Win32Point();
GetCursorPos(ref w32Mouse);
var pfs = SceneTreeView.PointFromScreen(new Point(w32Mouse.X, w32Mouse.Y));
var tb = SceneTreeView.InputHitTest(pfs) as TextBlock;
if (tb != null)
{
if (tb != old_tb)
{
if (old_tb != start_tb)
{
old_tb.Background = null;
}
if (tb != start_tb)
{
tb.Background = System.Windows.Media.Brushes.DarkGray;
var s1 = System.Windows.Media.VisualTreeHelper.GetParent(tb);
StackPanel s2 = (StackPanel)System.Windows.Media.VisualTreeHelper.GetParent(s1);
target_drag = (Model)s2.DataContext; //Set current target drag
//Console.WriteLine("Cursor Over " + target_drag.Name);
}
old_tb = tb;
}
}
}
private void SceneTreeView_Drop(object sender, DragEventArgs e)
{
var tv = sender as TreeView;
IInputElement target = SceneTreeView.InputHitTest(e.GetPosition(SceneTreeView));
if (old_tb != start_tb)
{
old_tb.Background = null;
}
TextBlock tb = (TextBlock)target;
if (tb == null || target_drag == null)
{
return;
}
if (init_drag != target_drag)
{
//Remove child from parent model node
ThreadRequest req = new ThreadRequest();
req.type = THREAD_REQUEST_TYPE.CHANGE_MODEL_PARENT_REQUEST;
req.arguments.Add(init_drag);
req.arguments.Add(target_drag);
glControl.engine.issueRenderingRequest(ref req);
/*
* lock (init_drag)
* {
* if (init_drag.parent != null)
* {
* lock (init_drag.parent.Children)
* {
* init_drag.parent.Children.Remove(init_drag);
* }
* }
*
* //Add to target node
* init_drag.parent = target_drag;
* }
*
* lock (target_drag.Children)
* {
* target_drag.Children.Add(init_drag);
* }
*/
init_drag = null;
target_drag = null;
e.Handled = true;
}
}