reactos/dll/win32/user32/windows/winpos.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS user32.dll
   5  * FILE:            lib/user32/windows/window.c
   6  * PURPOSE:         Window management
   7  * PROGRAMMER:      Casper S. Hornstrup (chorns@users.sourceforge.net)
   8  * UPDATE HISTORY:
   9  *      06-06-2001  CSH  Created
  10  */
  11
  12 /* INCLUDES ******************************************************************/
  13
  14 #include <user32.h>
  15
  16 #include <wine/debug.h>
  17 WINE_DEFAULT_DEBUG_CHANNEL(user32);
  18
  19 /* FUNCTIONS *****************************************************************/
  20
  21 /*******************************************************************
  22  *         can_activate_window
  23  *
  24  * Check if we can activate the specified window.
  25  */
  26 static BOOL can_activate_window( HWND hwnd )
  27 {
  28     LONG style;
  29
  30     if (!hwnd) return FALSE;
  31     style = GetWindowLongPtrW( hwnd, GWL_STYLE );
  32     if (!(style & WS_VISIBLE)) return FALSE;
  33     if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD) return FALSE;
  34     return !(style & WS_DISABLED);
  35 }
  36
  37
  38 /*******************************************************************
  39  *         WINPOS_ActivateOtherWindow
  40  *
  41  *  Activates window other than pWnd.
  42  */
  43 void
  44 WINAPI
  45 WinPosActivateOtherWindow(HWND hwnd)
  46 {
  47     HWND hwndTo, fg;
  48
  49     if ((GetWindowLongPtrW( hwnd, GWL_STYLE ) & WS_POPUP) && (hwndTo = GetWindow( hwnd, GW_OWNER )))
  50     {
  51         hwndTo = GetAncestor( hwndTo, GA_ROOT );
  52         if (can_activate_window( hwndTo )) goto done;
  53     }
  54
  55     hwndTo = hwnd;
  56     for (;;)
  57     {
  58         if (!(hwndTo = GetWindow( hwndTo, GW_HWNDNEXT ))) break;
  59         if (can_activate_window( hwndTo )) break;
  60     }
  61
  62  done:
  63     fg = GetForegroundWindow();
  64     TRACE("win = %p fg = %p\n", hwndTo, fg);
  65     if (!fg || (hwnd == fg))
  66     {
  67         if (SetForegroundWindow( hwndTo )) return;
  68     }
  69     if (!SetActiveWindow( hwndTo )) SetActiveWindow(0);
  70 }
  71
  72
  73
  74 UINT WINAPI
  75 WinPosGetMinMaxInfo(HWND hWnd, POINT* MaxSize, POINT* MaxPos,
  76                   POINT* MinTrack, POINT* MaxTrack)
  77 {
  78   MINMAXINFO MinMax;
  79
  80   if(NtUserGetMinMaxInfo(hWnd, &MinMax, TRUE))
  81   {
  82     MinMax.ptMaxTrackSize.x = max(MinMax.ptMaxTrackSize.x,
  83                                   MinMax.ptMinTrackSize.x);
  84     MinMax.ptMaxTrackSize.y = max(MinMax.ptMaxTrackSize.y,
  85                                   MinMax.ptMinTrackSize.y);
  86
  87     if (MaxSize) *MaxSize = MinMax.ptMaxSize;
  88     if (MaxPos) *MaxPos = MinMax.ptMaxPosition;
  89     if (MinTrack) *MinTrack = MinMax.ptMinTrackSize;
  90     if (MaxTrack) *MaxTrack = MinMax.ptMaxTrackSize;
  91   }
  92   return 0; //FIXME: what does it return?
  93 }
  94
  95
  96 /*
  97  * @implemented
  98  */
  99 HWND WINAPI
 100 GetActiveWindow(VOID)
 101 {
 102   return (HWND)NtUserGetThreadState(THREADSTATE_ACTIVEWINDOW);
 103 }
 104
 105
 106 /*
 107  * @unimplemented
 108  */
 109 UINT WINAPI
 110 ArrangeIconicWindows(HWND hWnd)
 111 {
 112   return NtUserCallHwndLock( hWnd, HWNDLOCK_ROUTINE_ARRANGEICONICWINDOWS);
 113 }