git.oblomov.eu Git - wine/blob - dlls/user32/focus.c

   1 /*
   2  * Focus and activation functions
   3  *
   4  * Copyright 1993 David Metcalfe
   5  * Copyright 1995 Alex Korobka
   6  * Copyright 1994, 2002 Alexandre Julliard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <stdarg.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "win.h"
  32 #include "user_private.h"
  33 #include "wine/server.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(win);
  37
  38
  39 /*****************************************************************
  40  *              set_focus_window
  41  *
  42  * Change the focus window, sending the WM_SETFOCUS and WM_KILLFOCUS messages
  43  */
  44 static HWND set_focus_window( HWND hwnd )
  45 {
  46     HWND previous = 0;
  47     BOOL ret;
  48
  49     SERVER_START_REQ( set_focus_window )
  50     {
  51         req->handle = hwnd;
  52         if ((ret = !wine_server_call_err( req ))) previous = reply->previous;
  53     }
  54     SERVER_END_REQ;
  55     if (!ret) return 0;
  56     if (previous == hwnd) return previous;
  57
  58     if (previous)
  59     {
  60         SendMessageW( previous, WM_KILLFOCUS, (WPARAM)hwnd, 0 );
  61         if (hwnd != GetFocus()) return previous;  /* changed by the message */
  62     }
  63     if (IsWindow(hwnd))
  64     {
  65         USER_Driver->pSetFocus(hwnd);
  66         SendMessageW( hwnd, WM_SETFOCUS, (WPARAM)previous, 0 );
  67     }
  68     return previous;
  69 }
  70
  71
  72 /*******************************************************************
  73  *              set_active_window
  74  */
  75 static BOOL set_active_window( HWND hwnd, HWND *prev, BOOL mouse, BOOL focus )
  76 {
  77     HWND previous = GetActiveWindow();
  78     BOOL ret;
  79     DWORD old_thread, new_thread;
  80     CBTACTIVATESTRUCT cbt;
  81
  82     if (previous == hwnd)
  83     {
  84         if (prev) *prev = hwnd;
  85         return TRUE;
  86     }
  87
  88     /* call CBT hook chain */
  89     cbt.fMouse     = mouse;
  90     cbt.hWndActive = previous;
  91     if (HOOK_CallHooks( WH_CBT, HCBT_ACTIVATE, (WPARAM)hwnd, (LPARAM)&cbt, TRUE )) return FALSE;
  92
  93     if (IsWindow(previous))
  94     {
  95         SendMessageW( previous, WM_NCACTIVATE, FALSE, (LPARAM)hwnd );
  96         SendMessageW( previous, WM_ACTIVATE,
  97                       MAKEWPARAM( WA_INACTIVE, IsIconic(previous) ), (LPARAM)hwnd );
  98     }
  99
 100     SERVER_START_REQ( set_active_window )
 101     {
 102         req->handle = hwnd;
 103         if ((ret = !wine_server_call_err( req ))) previous = reply->previous;
 104     }
 105     SERVER_END_REQ;
 106     if (!ret) return FALSE;
 107     if (prev) *prev = previous;
 108     if (previous == hwnd) return TRUE;
 109
 110     if (hwnd)
 111     {
 112         /* send palette messages */
 113         if (SendMessageW( hwnd, WM_QUERYNEWPALETTE, 0, 0 ))
 114             SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTEISCHANGING, (WPARAM)hwnd, 0,
 115                                  SMTO_ABORTIFHUNG, 2000, NULL );
 116         if (!IsWindow(hwnd)) return FALSE;
 117     }
 118
 119     old_thread = previous ? GetWindowThreadProcessId( previous, NULL ) : 0;
 120     new_thread = hwnd ? GetWindowThreadProcessId( hwnd, NULL ) : 0;
 121
 122     if (old_thread != new_thread)
 123     {
 124         HWND *list, *phwnd;
 125
 126         if ((list = WIN_ListChildren( GetDesktopWindow() )))
 127         {
 128             if (old_thread)
 129             {
 130                 for (phwnd = list; *phwnd; phwnd++)
 131                 {
 132                     if (GetWindowThreadProcessId( *phwnd, NULL ) == old_thread)
 133                         SendMessageW( *phwnd, WM_ACTIVATEAPP, 0, new_thread );
 134                 }
 135             }
 136             if (new_thread)
 137             {
 138                 for (phwnd = list; *phwnd; phwnd++)
 139                 {
 140                     if (GetWindowThreadProcessId( *phwnd, NULL ) == new_thread)
 141                         SendMessageW( *phwnd, WM_ACTIVATEAPP, 1, old_thread );
 142                 }
 143             }
 144             HeapFree( GetProcessHeap(), 0, list );
 145         }
 146     }
 147
 148     if (IsWindow(hwnd))
 149     {
 150         SendMessageW( hwnd, WM_NCACTIVATE, (hwnd == GetForegroundWindow()), (LPARAM)previous );
 151         SendMessageW( hwnd, WM_ACTIVATE,
 152                       MAKEWPARAM( mouse ? WA_CLICKACTIVE : WA_ACTIVE, IsIconic(hwnd) ),
 153                       (LPARAM)previous );
 154     }
 155
 156     /* now change focus if necessary */
 157     if (focus)
 158     {
 159         GUITHREADINFO info;
 160
 161         GetGUIThreadInfo( GetCurrentThreadId(), &info );
 162         /* Do not change focus if the window is no more active */
 163         if (hwnd == info.hwndActive)
 164         {
 165             if (!info.hwndFocus || !hwnd || GetAncestor( info.hwndFocus, GA_ROOT ) != hwnd)
 166                 set_focus_window( hwnd );
 167         }
 168     }
 169
 170     return TRUE;
 171 }
 172
 173
 174 /*******************************************************************
 175  *              set_foreground_window
 176  */
 177 static BOOL set_foreground_window( HWND hwnd, BOOL mouse )
 178 {
 179     BOOL ret, send_msg_old = FALSE, send_msg_new = FALSE;
 180     HWND previous = 0;
 181
 182     SERVER_START_REQ( set_foreground_window )
 183     {
 184         req->handle = hwnd;
 185         if ((ret = !wine_server_call_err( req )))
 186         {
 187             previous = reply->previous;
 188             send_msg_old = reply->send_msg_old;
 189             send_msg_new = reply->send_msg_new;
 190         }
 191     }
 192     SERVER_END_REQ;
 193
 194     if (ret)
 195     {
 196         if (send_msg_old)  /* old window belongs to other thread */
 197             SendNotifyMessageW( previous, WM_WINE_SETACTIVEWINDOW, 0, 0 );
 198         else if (send_msg_new)  /* old window belongs to us but new one to other thread */
 199             ret = set_active_window( 0, NULL, mouse, TRUE );
 200
 201         if (send_msg_new)  /* new window belongs to other thread */
 202             SendNotifyMessageW( hwnd, WM_WINE_SETACTIVEWINDOW, (WPARAM)hwnd, 0 );
 203         else  /* new window belongs to us */
 204             ret = set_active_window( hwnd, NULL, mouse, TRUE );
 205     }
 206     return ret;
 207 }
 208
 209
 210 /*******************************************************************
 211  *              FOCUS_MouseActivate
 212  *
 213  * Activate a window as a result of a mouse click
 214  */
 215 BOOL FOCUS_MouseActivate( HWND hwnd )
 216 {
 217     return set_foreground_window( hwnd, TRUE );
 218 }
 219
 220
 221 /*******************************************************************
 222  *              SetActiveWindow (USER32.@)
 223  */
 224 HWND WINAPI SetActiveWindow( HWND hwnd )
 225 {
 226     HWND prev;
 227
 228     TRACE( "%p\n", hwnd );
 229
 230     if (hwnd)
 231     {
 232         LONG style = GetWindowLongW( hwnd, GWL_STYLE );
 233
 234         if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD)
 235             return GetActiveWindow();  /* Windows doesn't seem to return an error here */
 236
 237         hwnd = WIN_GetFullHandle( hwnd );
 238     }
 239
 240     if (!set_active_window( hwnd, &prev, FALSE, TRUE )) return 0;
 241     return prev;
 242 }
 243
 244
 245 /*****************************************************************
 246  *              SetFocus  (USER32.@)
 247  */
 248 HWND WINAPI SetFocus( HWND hwnd )
 249 {
 250     HWND hwndTop = hwnd;
 251     HWND previous = GetFocus();
 252
 253     TRACE( "%p prev %p\n", hwnd, previous );
 254
 255     if (hwnd)
 256     {
 257         /* Check if we can set the focus to this window */
 258         hwnd = WIN_GetFullHandle( hwnd );
 259         if (hwnd == previous) return previous;  /* nothing to do */
 260         for (;;)
 261         {
 262             HWND parent;
 263             LONG style = GetWindowLongW( hwndTop, GWL_STYLE );
 264             if (style & (WS_MINIMIZE | WS_DISABLED)) return 0;
 265             parent = GetAncestor( hwndTop, GA_PARENT );
 266             if (!parent || parent == GetDesktopWindow()) break;
 267             hwndTop = parent;
 268         }
 269
 270         /* call hooks */
 271         if (HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, (WPARAM)hwnd, (LPARAM)previous, TRUE )) return 0;
 272
 273         /* activate hwndTop if needed. */
 274         if (hwndTop != GetActiveWindow())
 275         {
 276             if (!set_active_window( hwndTop, NULL, FALSE, FALSE )) return 0;
 277             if (!IsWindow( hwnd )) return 0;  /* Abort if window destroyed */
 278         }
 279     }
 280     else /* NULL hwnd passed in */
 281     {
 282         if (!previous) return 0;  /* nothing to do */
 283         if (HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)previous, TRUE )) return 0;
 284     }
 285
 286     /* change focus and send messages */
 287     return set_focus_window( hwnd );
 288 }
 289
 290
 291 /*******************************************************************
 292  *              SetForegroundWindow  (USER32.@)
 293  */
 294 BOOL WINAPI SetForegroundWindow( HWND hwnd )
 295 {
 296     TRACE( "%p\n", hwnd );
 297
 298     hwnd = WIN_GetFullHandle( hwnd );
 299     return set_foreground_window( hwnd, FALSE );
 300 }
 301
 302
 303 /*******************************************************************
 304  *              GetActiveWindow  (USER32.@)
 305  */
 306 HWND WINAPI GetActiveWindow(void)
 307 {
 308     HWND ret = 0;
 309
 310     SERVER_START_REQ( get_thread_input )
 311     {
 312         req->tid = GetCurrentThreadId();
 313         if (!wine_server_call_err( req )) ret = reply->active;
 314     }
 315     SERVER_END_REQ;
 316     return ret;
 317 }
 318
 319
 320 /*****************************************************************
 321  *              GetFocus  (USER32.@)
 322  */
 323 HWND WINAPI GetFocus(void)
 324 {
 325     HWND ret = 0;
 326
 327     SERVER_START_REQ( get_thread_input )
 328     {
 329         req->tid = GetCurrentThreadId();
 330         if (!wine_server_call_err( req )) ret = reply->focus;
 331     }
 332     SERVER_END_REQ;
 333     return ret;
 334 }
 335
 336
 337 /*******************************************************************
 338  *              GetForegroundWindow  (USER32.@)
 339  */
 340 HWND WINAPI GetForegroundWindow(void)
 341 {
 342     HWND ret = 0;
 343
 344     SERVER_START_REQ( get_thread_input )
 345     {
 346         req->tid = 0;
 347         if (!wine_server_call_err( req )) ret = reply->foreground;
 348     }
 349     SERVER_END_REQ;
 350     return ret;
 351 }
 352
 353
 354 /***********************************************************************
 355 *               SetShellWindowEx (USER32.@)
 356 * hwndShell =    Progman[Program Manager]
 357 *                |-> SHELLDLL_DefView
 358 * hwndListView = |   |-> SysListView32
 359 *                |   |   |-> tooltips_class32
 360 *                |   |
 361 *                |   |-> SysHeader32
 362 *                |
 363 *                |-> ProxyTarget
 364 */
 365 BOOL WINAPI SetShellWindowEx(HWND hwndShell, HWND hwndListView)
 366 {
 367     BOOL ret;
 368
 369     if (GetShellWindow())
 370         return FALSE;
 371
 372     if (GetWindowLongW(hwndShell, GWL_EXSTYLE) & WS_EX_TOPMOST)
 373         return FALSE;
 374
 375     if (hwndListView != hwndShell)
 376         if (GetWindowLongW(hwndListView, GWL_EXSTYLE) & WS_EX_TOPMOST)
 377             return FALSE;
 378
 379     if (hwndListView && hwndListView!=hwndShell)
 380         SetWindowPos(hwndListView, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
 381
 382     SetWindowPos(hwndShell, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
 383
 384     SERVER_START_REQ(set_global_windows)
 385     {
 386         req->flags          = SET_GLOBAL_SHELL_WINDOWS;
 387         req->shell_window   = hwndShell;
 388         req->shell_listview = hwndListView;
 389         ret = !wine_server_call_err(req);
 390     }
 391     SERVER_END_REQ;
 392
 393     return ret;
 394 }
 395
 396
 397 /*******************************************************************
 398 *               SetShellWindow (USER32.@)
 399 */
 400 BOOL WINAPI SetShellWindow(HWND hwndShell)
 401 {
 402     return SetShellWindowEx(hwndShell, hwndShell);
 403 }
 404
 405
 406 /*******************************************************************
 407 *               GetShellWindow (USER32.@)
 408 */
 409 HWND WINAPI GetShellWindow(void)
 410 {
 411     HWND hwndShell = 0;
 412
 413     SERVER_START_REQ(set_global_windows)
 414     {
 415         req->flags = 0;
 416         if (!wine_server_call_err(req))
 417             hwndShell = reply->old_shell_window;
 418     }
 419     SERVER_END_REQ;
 420
 421     return hwndShell;
 422 }
 423
 424
 425 /***********************************************************************
 426  *              SetProgmanWindow (USER32.@)
 427  */
 428 HWND WINAPI SetProgmanWindow ( HWND hwnd )
 429 {
 430     SERVER_START_REQ(set_global_windows)
 431     {
 432         req->flags          = SET_GLOBAL_PROGMAN_WINDOW;
 433         req->progman_window = hwnd;
 434         if (wine_server_call_err( req )) hwnd = 0;
 435     }
 436     SERVER_END_REQ;
 437     return hwnd;
 438 }
 439
 440
 441 /***********************************************************************
 442  *              GetProgmanWindow (USER32.@)
 443  */
 444 HWND WINAPI GetProgmanWindow(void)
 445 {
 446     HWND ret = 0;
 447
 448     SERVER_START_REQ(set_global_windows)
 449     {
 450         req->flags = 0;
 451         if (!wine_server_call_err(req)) ret = reply->old_progman_window;
 452     }
 453     SERVER_END_REQ;
 454     return ret;
 455 }
 456
 457
 458 /***********************************************************************
 459  *              SetTaskmanWindow (USER32.@)
 460  * NOTES
 461  *   hwnd = MSTaskSwWClass
 462  *          |-> SysTabControl32
 463  */
 464 HWND WINAPI SetTaskmanWindow ( HWND hwnd )
 465 {
 466     SERVER_START_REQ(set_global_windows)
 467     {
 468         req->flags          = SET_GLOBAL_TASKMAN_WINDOW;
 469         req->taskman_window = hwnd;
 470         if (wine_server_call_err( req )) hwnd = 0;
 471     }
 472     SERVER_END_REQ;
 473     return hwnd;
 474 }
 475
 476 /***********************************************************************
 477  *              GetTaskmanWindow (USER32.@)
 478  */
 479 HWND WINAPI GetTaskmanWindow(void)
 480 {
 481     HWND ret = 0;
 482
 483     SERVER_START_REQ(set_global_windows)
 484     {
 485         req->flags = 0;
 486         if (!wine_server_call_err(req)) ret = reply->old_taskman_window;
 487     }
 488     SERVER_END_REQ;
 489     return ret;
 490 }