private void OnDragInitialize(object sender, DragInitializeEventArgs e)
{
Control source = sender as Control;
Panel context = DragManager.DragContext;
Point dragStart = DragManager.DragStartPosition;
e.Effects = DragDropEffects.All;
Point mousePos = e.GetPosition(context);
Point itemPos = source.TranslatePoint(new Point(), source);
Point offset = new Point(mousePos.X - itemPos.X, mousePos.Y - itemPos.Y);
e.DragVisualSize = new Size(source.ActualWidth, source.ActualHeight);
e.DragVisualOffset = offset;
e.Data = DragDataManager.GenerateDataObject(source);
}
private void AssociateObject_DragEnter(object sender, DragEventArgs e)
{
if (_dragVisual == null)
{
Panel source = sender as Panel;
//FrameworkElement dragVisual = null;
Point dragStart = DragManager.DragStartPosition;
Control dragItem = GetDragItemControl(source, dragStart);
Point itemPos = dragItem.TranslatePoint(new Point(), source);
if (DragVisualTemplate == null)
{
DragVisualTemplate = GetDefaultDataTemplate();
}
Point position = e.GetPosition(source);
Point offset = new Point(dragStart.X - itemPos.X, dragStart.Y - itemPos.Y);
Size size = new Size(dragItem.ActualWidth, dragItem.ActualHeight);
IList data = DragDataManager.GetData(e.Data);
_dragVisual = new DragVisual(data, source, DragVisualTemplate, offset, size);
//if (dragItem.Parent is ItemsControl)
//{
// ItemsControl parent = dragItem.Parent as ItemsControl;
// DataTemplate template = parent.ItemTemplate;
// if (template == null)
// {
// DragVisualTemplate = GetDefaultDataTemplate();
// }
// else
// {
// DragVisualTemplate = template;
// }
// Point position = e.GetPosition(source);
// Point offset = new Point(position.X - itemPos.X, position.Y - itemPos.Y);
// Size size = new Size(dragItem.ActualWidth, dragItem.ActualHeight);
// _dragVisual = new DragVisual(e.Data.GetData(DragDataManager.DataFormat) as IList, source, DragVisualTemplate, offset, size);
//}
//else
//{
// dragVisual = CloneElement(dragItem);
// Point position = e.GetPosition(source);
// Point offset = new Point(position.X - itemPos.X, position.Y - itemPos.Y);
// Size size = new Size(dragItem.ActualWidth, dragItem.ActualHeight);
// _dragVisual = new DragVisual(e.Data.GetData(DragDataManager.DataFormat), source, offset, size, dragVisual);
//}
}
}
