git.oblomov.eu Git - wine/blob - windows/focus.c

   1 /*
   2  * Focus functions
   3  *
   4  * Copyright 1993 David Metcalfe
   5  *           1994 Alexandre Julliard
   6  *           1995 Alex Korobka
   7  *
   8  */
   9
  10 #include "win.h"
  11 #include "winpos.h"
  12 #include "hook.h"
  13 #include "color.h"
  14 #include "message.h"
  15 #include "options.h"
  16
  17 static HWND hwndFocus = 0;
  18
  19 /*****************************************************************
  20  *               FOCUS_SetXFocus
  21  *
  22  * Set the X focus.
  23  * Explicit colormap management seems to work only with OLVWM.
  24  */
  25 void FOCUS_SetXFocus( HWND hwnd )
  26 {
  27     XWindowAttributes win_attr;
  28     Window win;
  29
  30     /* Only mess with the X focus if there's */
  31     /* no desktop window and no window manager. */
  32     if ((rootWindow != DefaultRootWindow(display)) || Options.managed) return;
  33
  34     if (!hwnd)  /* If setting the focus to 0, uninstall the colormap */
  35     {
  36         if (COLOR_GetSystemPaletteFlags() & COLOR_PRIVATE)
  37             XUninstallColormap( display, COLOR_GetColormap() );
  38         return;
  39     }
  40
  41       /* Set X focus and install colormap */
  42
  43     if (!(win = WIN_GetXWindow( hwnd ))) return;
  44     if (!XGetWindowAttributes( display, win, &win_attr ) ||
  45         (win_attr.map_state != IsViewable))
  46         return;  /* If window is not viewable, don't change anything */
  47
  48     XSetInputFocus( display, win, RevertToParent, CurrentTime );
  49     if (COLOR_GetSystemPaletteFlags() & COLOR_PRIVATE)
  50         XInstallColormap( display, COLOR_GetColormap() );
  51
  52     EVENT_Synchronize();
  53 }
  54
  55 /*****************************************************************
  56  *               FOCUS_SwitchFocus
  57  */
  58 void FOCUS_SwitchFocus(HWND hFocusFrom, HWND hFocusTo)
  59 {
  60     hwndFocus = hFocusTo;
  61
  62     if (hFocusFrom) SendMessage16( hFocusFrom, WM_KILLFOCUS, (WPARAM)hFocusTo, 0L);
  63     if( !hFocusTo || hFocusTo != hwndFocus )
  64         return;
  65
  66     SendMessage16( hFocusTo, WM_SETFOCUS, (WPARAM)hFocusFrom, 0L);
  67     FOCUS_SetXFocus( hFocusTo );
  68 }
  69
  70
  71 /*****************************************************************
  72  *               SetFocus            (USER.22)
  73  */
  74 HWND SetFocus(HWND hwnd)
  75 {
  76     HWND hWndPrevFocus, hwndTop = hwnd;
  77     WND *wndPtr = WIN_FindWndPtr( hwnd );
  78
  79     if (wndPtr)
  80     {
  81           /* Check if we can set the focus to this window */
  82
  83         while ( (wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) == WS_CHILD  )
  84         {
  85             if ( wndPtr->dwStyle & ( WS_MINIMIZE | WS_DISABLED) )
  86                  return 0;
  87             if (!(wndPtr = wndPtr->parent)) return 0;
  88             hwndTop = wndPtr->hwndSelf;
  89         }
  90
  91         if( hwnd == hwndFocus ) return hwnd;
  92
  93         /* call hooks */
  94         if( HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, (WPARAM)hwnd, (LPARAM)hwndFocus) )
  95             return 0;
  96
  97         /* activate hwndTop if needed. */
  98         if (hwndTop != GetActiveWindow())
  99         {
 100             if (!WINPOS_SetActiveWindow(hwndTop, 0, 0)) return 0;
 101
 102             if (!IsWindow( hwnd )) return 0;  /* Abort if window destroyed */
 103         }
 104     }
 105     else if( HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)hwndFocus ) )
 106              return 0;
 107
 108       /* Change focus and send messages */
 109     hWndPrevFocus = hwndFocus;
 110
 111     FOCUS_SwitchFocus( hwndFocus , hwnd );
 112
 113     return hWndPrevFocus;
 114 }
 115
 116
 117 /*****************************************************************
 118  *               GetFocus            (USER.23)
 119  */
 120 HWND GetFocus(void)
 121 {
 122     return hwndFocus;
 123 }
 124
 125