public void DragMove(IDragDropToTabWindow dragWin)
{
if (dragWin == null)
{
return;
}
Win32Helper.Win32Point p = new Win32Helper.Win32Point();
if (!Win32Helper.GetCursorPos(ref p))
{
return;
}
Point dragWinPosition = new Point(p.X, p.Y);
foreach (IDragDropToTabWindow existWin in _allWindows)
{
if (dragWin.Equals(existWin))
{
continue;
}
if (existWin.IsDragMouseOver(dragWinPosition))
{
if (!_dragEnteredWindows.Contains(existWin))
{
_dragEnteredWindows.Add(existWin);
}
}
else
{
if (_dragEnteredWindows.Contains(existWin))
{
_dragEnteredWindows.Remove(existWin);
existWin.OnDrageLeave();
}
}
}
if (_dragEnteredWindows.Count > 0)
{
IntPtr dragWinHwnd = new System.Windows.Interop.WindowInteropHelper((Window)dragWin).Handle;
IntPtr dragBelowhwnd = Win32Helper.GetWindow(dragWinHwnd, Win32Helper.GW_HWNDNEXT);
IDragDropToTabWindow nextTopWin = null;
bool foundTabTarget = false;
for (IntPtr hWind = dragBelowhwnd; hWind != IntPtr.Zero; hWind = Win32Helper.GetWindow(hWind, Win32Helper.GW_HWNDNEXT))
{
foreach (Window enteredWin in _dragEnteredWindows)
{
IntPtr enterWinHwnd = new System.Windows.Interop.WindowInteropHelper(enteredWin).Handle;
if (hWind == enterWinHwnd)
{
nextTopWin = (IDragDropToTabWindow)enteredWin;
((IDragDropToTabWindow)enteredWin).OnDragEnter();
foundTabTarget = true;
break;
}
}
if (foundTabTarget)
{
break;
}
}
if (nextTopWin != null)
{
foreach (Window enteredWin in _dragEnteredWindows)
{
if (!nextTopWin.Equals(enteredWin))
{
((IDragDropToTabWindow)enteredWin).OnDrageLeave();
}
}
if (nextTopWin.IsDragMouseOverTabZone(dragWinPosition))
{
((Window)dragWin).Hide();
}
else
{
((Window)dragWin).Show();
}
}
}
else
{
if (!((Window)dragWin).IsVisible)
{
((Window)dragWin).Show();
}
}
}