void List_MouseDown(object sender, MouseEventArgs e)
{
mDownPos = e.Location;
int index = PlayListBox.IndexFromPoint(new Point(PlayListBox.PointToClient(Cursor.Position).X, PlayListBox.PointToClient(Cursor.Position).Y));
if (index >= 0 && index < PlayListBox.Items.Count)
{
PlayListBox.SelectedIndex = index;
}
ContextMenuHelper();
}
void List_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
int index = PlayListBox.IndexFromPoint(e.Location);
if (index < 0)
{
return;
}
if (Math.Abs(e.X - mDownPos.X) >= SystemInformation.DragSize.Width ||
Math.Abs(e.Y - mDownPos.Y) >= SystemInformation.DragSize.Height)
{
DoDragDrop(new DragObject(PlayListBox, PlayListBox.Items[index]), DragDropEffects.Move);
}
}
void List_DragDrop(object sender, DragEventArgs e)
{
DragObject obj = e.Data.GetData(typeof(DragObject)) as DragObject;
int index = PlayListBox.IndexFromPoint(new Point(PlayListBox.PointToClient(Cursor.Position).X, PlayListBox.PointToClient(Cursor.Position).Y));
int oldIndex = obj.source.Items.IndexOf(obj.item);
PlayListItem tempItem = (PlayListItem)obj.item;
obj.source.Items.Remove(obj.item);
playListManager.Remove(tempItem);
if (index < 0 || index >= PlayListBox.Items.Count)
{
PlayListBox.Items.Add(obj.item);
playListManager.AddTrack(tempItem);
}
else
{
PlayListBox.Items.Insert(index, obj.item);
playListManager.InsertTrack(index, tempItem);
}
}