dlls/user/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 "winerror.h"
  32 #include "win.h"
  33 #include "user_private.h"
  34 #include "wine/server.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(win);
  38
  39
  40 /*****************************************************************
  41  *              set_focus_window
  42  *
  43  * Change the focus window, sending the WM_SETFOCUS and WM_KILLFOCUS messages
  44  */
  45 static HWND set_focus_window( HWND hwnd )
  46 {
  47     HWND previous = 0;
  48     BOOL ret;
  49
  50     SERVER_START_REQ( set_focus_window )
  51     {
  52         req->handle = hwnd;
  53         if ((ret = !wine_server_call_err( req ))) previous = reply->previous;
  54     }
  55     SERVER_END_REQ;
  56     if (!ret) return 0;
  57     if (previous == hwnd) return previous;
  58
  59     if (previous)
  60     {
  61         SendMessageW( previous, WM_KILLFOCUS, (WPARAM)hwnd, 0 );
  62         if (hwnd != GetFocus()) return previous;  /* changed by the message */
  63     }
  64     if (IsWindow(hwnd))
  65     {
  66         if (USER_Driver.pSetFocus) USER_Driver.pSetFocus(hwnd);
  67         SendMessageW( hwnd, WM_SETFOCUS, (WPARAM)previous, 0 );
  68     }
  69     return previous;
  70 }
  71
  72
  73 /*******************************************************************
  74  *              set_active_window
  75  */
  76 static BOOL set_active_window( HWND hwnd, HWND *prev, BOOL mouse, BOOL focus )
  77 {
  78     HWND previous = GetActiveWindow();
  79     BOOL ret;
  80     DWORD old_thread, new_thread;
  81     CBTACTIVATESTRUCT cbt;
  82
  83     if (previous == hwnd)
  84     {
  85         if (prev) *prev = hwnd;
  86         return TRUE;
  87     }
  88
  89     /* call CBT hook chain */
  90     cbt.fMouse     = mouse;
  91     cbt.hWndActive = previous;
  92     if (HOOK_CallHooks( WH_CBT, HCBT_ACTIVATE, (WPARAM)hwnd, (LPARAM)&cbt, TRUE )) return FALSE;
  93
  94     if (IsWindow(previous))
  95     {
  96         SendMessageW( previous, WM_NCACTIVATE, FALSE, (LPARAM)hwnd );
  97         SendMessageW( previous, WM_ACTIVATE,
  98                       MAKEWPARAM( WA_INACTIVE, IsIconic(previous) ), (LPARAM)hwnd );
  99     }
 100
 101     SERVER_START_REQ( set_active_window )
 102     {
 103         req->handle = hwnd;
 104         if ((ret = !wine_server_call_err( req ))) previous = reply->previous;
 105     }
 106     SERVER_END_REQ;
 107     if (!ret) return FALSE;
 108     if (prev) *prev = previous;
 109     if (previous == hwnd) return TRUE;
 110
 111     if (hwnd)
 112     {
 113         /* send palette messages */
 114         if (SendMessageW( hwnd, WM_QUERYNEWPALETTE, 0, 0 ))
 115             SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTEISCHANGING, (WPARAM)hwnd, 0,
 116                                  SMTO_ABORTIFHUNG, 2000, NULL );
 117
 118         if (!GetPropA( hwnd, "__wine_x11_managed" ))
 119             SetWindowPos( hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE );
 120
 121         if (!IsWindow(hwnd)) return FALSE;
 122     }
 123
 124     old_thread = previous ? GetWindowThreadProcessId( previous, NULL ) : 0;
 125     new_thread = hwnd ? GetWindowThreadProcessId( hwnd, NULL ) : 0;
 126
 127     if (old_thread != new_thread)
 128     {
 129         HWND *list, *phwnd;
 130
 131         if ((list = WIN_ListChildren( GetDesktopWindow() )))
 132         {
 133             if (old_thread)
 134             {
 135                 for (phwnd = list; *phwnd; phwnd++)
 136                 {
 137                     if (GetWindowThreadProcessId( *phwnd, NULL ) == old_thread)
 138                         SendMessageW( *phwnd, WM_ACTIVATEAPP, 0, new_thread );
 139                 }
 140             }
 141             if (new_thread)
 142             {
 143                 for (phwnd = list; *phwnd; phwnd++)
 144                 {
 145                     if (GetWindowThreadProcessId( *phwnd, NULL ) == new_thread)
 146                         SendMessageW( *phwnd, WM_ACTIVATEAPP, 1, old_thread );
 147                 }
 148             }
 149             HeapFree( GetProcessHeap(), 0, list );
 150         }
 151     }
 152
 153     if (IsWindow(hwnd))
 154     {
 155         SendMessageW( hwnd, WM_NCACTIVATE, (hwnd == GetForegroundWindow()), (LPARAM)previous );
 156         SendMessageW( hwnd, WM_ACTIVATE,
 157                       MAKEWPARAM( mouse ? WA_CLICKACTIVE : WA_ACTIVE, IsIconic(hwnd) ),
 158                       (LPARAM)previous );
 159     }
 160
 161     /* now change focus if necessary */
 162     if (focus)
 163     {
 164         HWND curfocus = GetFocus();
 165         if (!curfocus || !hwnd || GetAncestor( curfocus, GA_ROOT ) != hwnd)
 166             set_focus_window( hwnd );
 167     }
 168
 169     return TRUE;
 170 }
 171
 172
 173 /*******************************************************************
 174  *              set_foreground_window
 175  */
 176 static BOOL set_foreground_window( HWND hwnd, BOOL mouse )
 177 {
 178     BOOL ret, send_msg_old = FALSE, send_msg_new = FALSE;
 179     HWND previous = 0;
 180
 181     SERVER_START_REQ( set_foreground_window )
 182     {
 183         req->handle = hwnd;
 184         if ((ret = !wine_server_call_err( req )))
 185         {
 186             previous = reply->previous;
 187             send_msg_old = reply->send_msg_old;
 188             send_msg_new = reply->send_msg_new;
 189         }
 190     }
 191     SERVER_END_REQ;
 192
 193     if (ret)
 194     {
 195         if (send_msg_old)  /* old window belongs to other thread */
 196             SendNotifyMessageW( previous, WM_WINE_SETACTIVEWINDOW, 0, 0 );
 197         else if (send_msg_new)  /* old window belongs to us but new one to other thread */
 198             ret = set_active_window( 0, NULL, mouse, TRUE );
 199
 200         if (send_msg_new)  /* new window belongs to other thread */
 201             SendNotifyMessageW( hwnd, WM_WINE_SETACTIVEWINDOW, (WPARAM)hwnd, 0 );
 202         else  /* new window belongs to us */
 203             ret = set_active_window( hwnd, NULL, mouse, TRUE );
 204     }
 205     return ret;
 206 }
 207
 208
 209 /*******************************************************************
 210  *              FOCUS_MouseActivate
 211  *
 212  * Activate a window as a result of a mouse click
 213  */
 214 BOOL FOCUS_MouseActivate( HWND hwnd )
 215 {
 216     return set_foreground_window( hwnd, TRUE );
 217 }
 218
 219
 220 /*******************************************************************
 221  *              SetActiveWindow (USER32.@)
 222  */
 223 HWND WINAPI SetActiveWindow( HWND hwnd )
 224 {
 225     HWND prev;
 226
 227     TRACE( "%p\n", hwnd );
 228
 229     if (hwnd)
 230     {
 231         LONG style = GetWindowLongW( hwnd, GWL_STYLE );
 232
 233         if ((style & (WS_POPUP|WS_CHILD)) == WS_CHILD)
 234             return GetActiveWindow();  /* Windows doesn't seem to return an error here */
 235
 236         hwnd = WIN_GetFullHandle( hwnd );
 237     }
 238
 239     if (!set_active_window( hwnd, &prev, FALSE, TRUE )) return 0;
 240     return prev;
 241 }
 242
 243
 244 /*****************************************************************
 245  *              SetFocus  (USER32.@)
 246  */
 247 HWND WINAPI SetFocus( HWND hwnd )
 248 {
 249     HWND hwndTop = hwnd;
 250     HWND previous = GetFocus();
 251
 252     TRACE( "%p prev %p\n", hwnd, previous );
 253
 254     if (hwnd)
 255     {
 256         /* Check if we can set the focus to this window */
 257         hwnd = WIN_GetFullHandle( hwnd );
 258         if (hwnd == previous) return previous;  /* nothing to do */
 259         for (;;)
 260         {
 261             HWND parent;
 262             LONG style = GetWindowLongW( hwndTop, GWL_STYLE );
 263             if (style & (WS_MINIMIZE | WS_DISABLED)) return 0;
 264             parent = GetAncestor( hwndTop, GA_PARENT );
 265             if (!parent || parent == GetDesktopWindow()) break;
 266             hwndTop = parent;
 267         }
 268
 269         /* call hooks */
 270         if (HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, (WPARAM)hwnd, (LPARAM)previous, TRUE )) return 0;
 271
 272         /* activate hwndTop if needed. */
 273         if (hwndTop != GetActiveWindow())
 274         {
 275             if (!set_active_window( hwndTop, NULL, FALSE, FALSE )) return 0;
 276             if (!IsWindow( hwnd )) return 0;  /* Abort if window destroyed */
 277         }
 278     }
 279     else /* NULL hwnd passed in */
 280     {
 281         if (!previous) return 0;  /* nothing to do */
 282         if (HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)previous, TRUE )) return 0;
 283     }
 284
 285     /* change focus and send messages */
 286     return set_focus_window( hwnd );
 287 }
 288
 289
 290 /*******************************************************************
 291  *              SetForegroundWindow  (USER32.@)
 292  */
 293 BOOL WINAPI SetForegroundWindow( HWND hwnd )
 294 {
 295     TRACE( "%p\n", hwnd );
 296     if (hwnd) hwnd = WIN_GetFullHandle( hwnd );
 297     return set_foreground_window( hwnd, FALSE );
 298 }
 299
 300
 301 /*******************************************************************
 302  *              GetActiveWindow  (USER32.@)
 303  */
 304 HWND WINAPI GetActiveWindow(void)
 305 {
 306     HWND ret = 0;
 307
 308     SERVER_START_REQ( get_thread_input )
 309     {
 310         req->tid = GetCurrentThreadId();
 311         if (!wine_server_call_err( req )) ret = reply->active;
 312     }
 313     SERVER_END_REQ;
 314     return ret;
 315 }
 316
 317
 318 /*****************************************************************
 319  *              GetFocus  (USER32.@)
 320  */
 321 HWND WINAPI GetFocus(void)
 322 {
 323     HWND ret = 0;
 324
 325     SERVER_START_REQ( get_thread_input )
 326     {
 327         req->tid = GetCurrentThreadId();
 328         if (!wine_server_call_err( req )) ret = reply->focus;
 329     }
 330     SERVER_END_REQ;
 331     return ret;
 332 }
 333
 334
 335 /*******************************************************************
 336  *              GetForegroundWindow  (USER32.@)
 337  */
 338 HWND WINAPI GetForegroundWindow(void)
 339 {
 340     HWND ret = 0;
 341
 342     SERVER_START_REQ( get_thread_input )
 343     {
 344         req->tid = 0;
 345         if (!wine_server_call_err( req )) ret = reply->foreground;
 346     }
 347     SERVER_END_REQ;
 348     return ret;
 349 }
 350
 351
 352 /***********************************************************************
 353 *               SetShellWindowEx (USER32.@)
 354 * hwndShell =    Progman[Program Manager]
 355 *                |-> SHELLDLL_DefView
 356 * hwndListView = |   |-> SysListView32
 357 *                |   |   |-> tooltips_class32
 358 *                |   |
 359 *                |   |-> SysHeader32
 360 *                |
 361 *                |-> ProxyTarget
 362 */
 363 BOOL WINAPI SetShellWindowEx(HWND hwndShell, HWND hwndListView)
 364 {
 365     BOOL ret;
 366
 367     if (GetShellWindow())
 368         return FALSE;
 369
 370     if (GetWindowLongW(hwndShell, GWL_EXSTYLE) & WS_EX_TOPMOST)
 371         return FALSE;
 372
 373     if (hwndListView != hwndShell)
 374         if (GetWindowLongW(hwndListView, GWL_EXSTYLE) & WS_EX_TOPMOST)
 375             return FALSE;
 376
 377     if (hwndListView && hwndListView!=hwndShell)
 378         SetWindowPos(hwndListView, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
 379
 380     SetWindowPos(hwndShell, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
 381
 382     SERVER_START_REQ(set_global_windows)
 383     {
 384         req->flags          = SET_GLOBAL_SHELL_WINDOWS;
 385         req->shell_window   = hwndShell;
 386         req->shell_listview = hwndListView;
 387         ret = !wine_server_call_err(req);
 388     }
 389     SERVER_END_REQ;
 390
 391     return ret;
 392 }
 393
 394
 395 /*******************************************************************
 396 *               SetShellWindow (USER32.@)
 397 */
 398 BOOL WINAPI SetShellWindow(HWND hwndShell)
 399 {
 400     return SetShellWindowEx(hwndShell, hwndShell);
 401 }
 402
 403
 404 /*******************************************************************
 405 *               GetShellWindow (USER32.@)
 406 */
 407 HWND WINAPI GetShellWindow(void)
 408 {
 409     HWND hwndShell = 0;
 410
 411     SERVER_START_REQ(set_global_windows)
 412     {
 413         req->flags = 0;
 414         if (!wine_server_call_err(req))
 415             hwndShell = reply->old_shell_window;
 416     }
 417     SERVER_END_REQ;
 418
 419     return hwndShell;
 420 }
 421
 422
 423 /***********************************************************************
 424  *              SetProgmanWindow (USER32.@)
 425  */
 426 HWND WINAPI SetProgmanWindow ( HWND hwnd )
 427 {
 428     SERVER_START_REQ(set_global_windows)
 429     {
 430         req->flags          = SET_GLOBAL_PROGMAN_WINDOW;
 431         req->progman_window = hwnd;
 432         if (wine_server_call_err( req )) hwnd = 0;
 433     }
 434     SERVER_END_REQ;
 435     return hwnd;
 436 }
 437
 438
 439 /***********************************************************************
 440  *              GetProgmanWindow (USER32.@)
 441  */
 442 HWND WINAPI GetProgmanWindow(void)
 443 {
 444     HWND ret = 0;
 445
 446     SERVER_START_REQ(set_global_windows)
 447     {
 448         req->flags = 0;
 449         if (!wine_server_call_err(req)) ret = reply->old_progman_window;
 450     }
 451     SERVER_END_REQ;
 452     return ret;
 453 }
 454
 455
 456 /***********************************************************************
 457  *              SetTaskmanWindow (USER32.@)
 458  * NOTES
 459  *   hwnd = MSTaskSwWClass
 460  *          |-> SysTabControl32
 461  */
 462 HWND WINAPI SetTaskmanWindow ( HWND hwnd )
 463 {
 464     SERVER_START_REQ(set_global_windows)
 465     {
 466         req->flags          = SET_GLOBAL_TASKMAN_WINDOW;
 467         req->taskman_window = hwnd;
 468         if (wine_server_call_err( req )) hwnd = 0;
 469     }
 470     SERVER_END_REQ;
 471     return hwnd;
 472 }
 473
 474 /***********************************************************************
 475  *              GetTaskmanWindow (USER32.@)
 476  */
 477 HWND WINAPI GetTaskmanWindow(void)
 478 {
 479     HWND ret = 0;
 480
 481     SERVER_START_REQ(set_global_windows)
 482     {
 483         req->flags = 0;
 484         if (!wine_server_call_err(req)) ret = reply->old_taskman_window;
 485     }
 486     SERVER_END_REQ;
 487     return ret;
 488 }