reactos/subsystems/win32/win32k/ntuser/keyboard.c

   1 /*
   2  *  ReactOS W32 Subsystem
   3  *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * PURPOSE:          Messages
  23  * FILE:             subsys/win32k/ntuser/keyboard.c
  24  * PROGRAMER:        Casper S. Hornstrup (chorns@users.sourceforge.net)
  25  * REVISION HISTORY:
  26  *       06-06-2001  CSH  Created
  27  */
  28
  29 /* INCLUDES ******************************************************************/
  30
  31 #include <w32k.h>
  32
  33 #define NDEBUG
  34 #include <debug.h>
  35
  36
  37 /* Lock modifiers */
  38 #define CAPITAL_BIT   0x80000000
  39 #define NUMLOCK_BIT   0x40000000
  40 #define MOD_BITS_MASK 0x3fffffff
  41 #define MOD_KCTRL     0x02
  42 /* Key States */
  43 #define KS_DOWN_MASK     0xc0
  44 #define KS_DOWN_BIT      0x80
  45 #define KS_LOCK_BIT    0x01
  46 /* lParam bits */
  47 #define LP_EXT_BIT       (1<<24)
  48 /* From kbdxx.c -- Key changes with numlock */
  49 #define KNUMP         0x400
  50
  51
  52 BYTE gQueueKeyStateTable[256];
  53
  54
  55
  56 /* FUNCTIONS *****************************************************************/
  57
  58 /* Initialization -- Right now, just zero the key state and init the lock */
  59 NTSTATUS FASTCALL InitKeyboardImpl(VOID)
  60 {
  61    RtlZeroMemory(&gQueueKeyStateTable,0x100);
  62    return STATUS_SUCCESS;
  63 }
  64
  65 /*** Statics used by TranslateMessage ***/
  66
  67 /*** Shift state code was out of hand, sorry. --- arty */
  68
  69 static UINT DontDistinguishShifts( UINT ret )
  70 {
  71    if( ret == VK_LSHIFT || ret == VK_RSHIFT )
  72       ret = VK_SHIFT;
  73    if( ret == VK_LCONTROL || ret == VK_RCONTROL )
  74       ret = VK_CONTROL;
  75    if( ret == VK_LMENU || ret == VK_RMENU )
  76       ret = VK_MENU;
  77    return ret;
  78 }
  79
  80 static VOID APIENTRY SetKeyState(DWORD key, DWORD vk, DWORD ext, BOOL down)
  81 {
  82    ASSERT(vk <= 0xff);
  83
  84    /* Special handling for toggles like numpad and caps lock */
  85    if (vk == VK_CAPITAL || vk == VK_NUMLOCK)
  86    {
  87       if (down)
  88          gQueueKeyStateTable[vk] ^= KS_LOCK_BIT;
  89    }
  90
  91    if (ext && vk == VK_LSHIFT)
  92       vk = VK_RSHIFT;
  93    if (ext && vk == VK_LCONTROL)
  94       vk = VK_RCONTROL;
  95    if (ext && vk == VK_LMENU)
  96       vk = VK_RMENU;
  97
  98    if (down)
  99       gQueueKeyStateTable[vk] |= KS_DOWN_BIT;
 100    else
 101       gQueueKeyStateTable[vk] &= ~KS_DOWN_MASK;
 102
 103    if (vk == VK_LSHIFT || vk == VK_RSHIFT)
 104    {
 105       if ((gQueueKeyStateTable[VK_LSHIFT] & KS_DOWN_BIT) ||
 106             (gQueueKeyStateTable[VK_RSHIFT] & KS_DOWN_BIT))
 107       {
 108          gQueueKeyStateTable[VK_SHIFT] |= KS_DOWN_BIT;
 109       }
 110       else
 111       {
 112          gQueueKeyStateTable[VK_SHIFT] &= ~KS_DOWN_MASK;
 113       }
 114    }
 115
 116    if (vk == VK_LCONTROL || vk == VK_RCONTROL)
 117    {
 118       if ((gQueueKeyStateTable[VK_LCONTROL] & KS_DOWN_BIT) ||
 119             (gQueueKeyStateTable[VK_RCONTROL] & KS_DOWN_BIT))
 120       {
 121          gQueueKeyStateTable[VK_CONTROL] |= KS_DOWN_BIT;
 122       }
 123       else
 124       {
 125          gQueueKeyStateTable[VK_CONTROL] &= ~KS_DOWN_MASK;
 126       }
 127    }
 128
 129    if (vk == VK_LMENU || vk == VK_RMENU)
 130    {
 131       if ((gQueueKeyStateTable[VK_LMENU] & KS_DOWN_BIT) ||
 132             (gQueueKeyStateTable[VK_RMENU] & KS_DOWN_BIT))
 133       {
 134          gQueueKeyStateTable[VK_MENU] |= KS_DOWN_BIT;
 135       }
 136       else
 137       {
 138          gQueueKeyStateTable[VK_MENU] &= ~KS_DOWN_MASK;
 139       }
 140    }
 141 }
 142
 143 VOID DumpKeyState( PBYTE KeyState )
 144 {
 145    int i;
 146
 147    DbgPrint( "KeyState { " );
 148    for( i = 0; i < 0x100; i++ )
 149    {
 150       if( KeyState[i] )
 151          DbgPrint( "%02x(%02x) ", i, KeyState[i] );
 152    }
 153    DbgPrint( "};\n" );
 154 }
 155
 156 static BYTE KeysSet( PKBDTABLES pkKT, PBYTE KeyState,
 157                      int FakeModLeft, int FakeModRight )
 158 {
 159    if( !KeyState || !pkKT )
 160       return 0;
 161
 162    /* Search special codes first */
 163    if( FakeModLeft && KeyState[FakeModLeft] )
 164       return KeyState[FakeModLeft];
 165    else if( FakeModRight && KeyState[FakeModRight] )
 166       return KeyState[FakeModRight];
 167
 168    return 0;
 169 }
 170
 171 /* Search the keyboard layout modifiers table for the shift bit.  I don't
 172  * want to count on the shift bit not moving, because it can be specified
 173  * in the layout */
 174
 175 static DWORD FASTCALL GetShiftBit( PKBDTABLES pkKT, DWORD Vk )
 176 {
 177    int i;
 178
 179    for( i = 0; pkKT->pCharModifiers->pVkToBit[i].Vk; i++ )
 180       if( pkKT->pCharModifiers->pVkToBit[i].Vk == Vk )
 181          return pkKT->pCharModifiers->pVkToBit[i].ModBits;
 182
 183    return 0;
 184 }
 185
 186 static DWORD ModBits( PKBDTABLES pkKT, PBYTE KeyState )
 187 {
 188    DWORD ModBits = 0;
 189
 190    if( !KeyState )
 191       return 0;
 192
 193    /* DumpKeyState( KeyState ); */
 194
 195    if (KeysSet( pkKT, KeyState, VK_LSHIFT, VK_RSHIFT ) &
 196          KS_DOWN_BIT)
 197       ModBits |= GetShiftBit( pkKT, VK_SHIFT );
 198
 199    if (KeysSet( pkKT, KeyState, VK_SHIFT, 0 ) &
 200          KS_DOWN_BIT)
 201       ModBits |= GetShiftBit( pkKT, VK_SHIFT );
 202
 203    if (KeysSet( pkKT, KeyState, VK_LCONTROL, VK_RCONTROL ) &
 204          KS_DOWN_BIT )
 205       ModBits |= GetShiftBit( pkKT, VK_CONTROL );
 206
 207    if (KeysSet( pkKT, KeyState, VK_CONTROL, 0 ) &
 208          KS_DOWN_BIT )
 209       ModBits |= GetShiftBit( pkKT, VK_CONTROL );
 210
 211    if (KeysSet( pkKT, KeyState, VK_LMENU, VK_RMENU ) &
 212          KS_DOWN_BIT )
 213       ModBits |= GetShiftBit( pkKT, VK_MENU );
 214
 215    /* Handle Alt+Gr */
 216    if (pkKT->fLocalFlags & 0x1)
 217       if (KeysSet( pkKT, KeyState, VK_RMENU, 0 ) &
 218             KS_DOWN_BIT)
 219          ModBits |= GetShiftBit( pkKT, VK_CONTROL );
 220
 221    /* Deal with VK_CAPITAL */
 222    if (KeysSet( pkKT, KeyState, VK_CAPITAL, 0 ) & KS_LOCK_BIT)
 223    {
 224       ModBits |= CAPITAL_BIT;
 225    }
 226
 227    /* Deal with VK_NUMLOCK */
 228    if (KeysSet( pkKT, KeyState, VK_NUMLOCK, 0 ) & KS_LOCK_BIT)
 229    {
 230       ModBits |= NUMLOCK_BIT;
 231    }
 232
 233    DPRINT( "Current Mod Bits: %x\n", ModBits );
 234
 235    return ModBits;
 236 }
 237
 238 static BOOL TryToTranslateChar(WORD wVirtKey,
 239                                DWORD ModBits,
 240                                PBOOL pbDead,
 241                                PBOOL pbLigature,
 242                                PWCHAR pwcTranslatedChar,
 243                                PKBDTABLES keyLayout )
 244 {
 245    PVK_TO_WCHAR_TABLE vtwTbl;
 246    PVK_TO_WCHARS10 vkPtr;
 247    size_t size_this_entry;
 248    int nMod;
 249    DWORD CapsMod = 0, CapsState = 0;
 250
 251    CapsState = ModBits & ~MOD_BITS_MASK;
 252    ModBits = ModBits & MOD_BITS_MASK;
 253
 254    DPRINT ( "TryToTranslate: %04x %x\n", wVirtKey, ModBits );
 255
 256    if (ModBits > keyLayout->pCharModifiers->wMaxModBits)
 257    {
 258       return FALSE;
 259    }
 260
 261    for (nMod = 0; keyLayout->pVkToWcharTable[nMod].nModifications; nMod++)
 262    {
 263       vtwTbl = &keyLayout->pVkToWcharTable[nMod];
 264       size_this_entry = vtwTbl->cbSize;
 265       vkPtr = (PVK_TO_WCHARS10)((BYTE *)vtwTbl->pVkToWchars);
 266       while(vkPtr->VirtualKey)
 267       {
 268          if( wVirtKey == (vkPtr->VirtualKey & 0xff) )
 269          {
 270             CapsMod = keyLayout->pCharModifiers->ModNumber
 271                       [ModBits ^
 272                        ((CapsState & CAPITAL_BIT) ? vkPtr->Attributes : 0)];
 273
 274             if( CapsMod >= keyLayout->pVkToWcharTable[nMod].nModifications )
 275             {
 276                return FALSE;
 277             }
 278
 279             if( vkPtr->wch[CapsMod] == WCH_NONE )
 280             {
 281                return FALSE;
 282             }
 283
 284             *pbDead = vkPtr->wch[CapsMod] == WCH_DEAD;
 285             *pbLigature = vkPtr->wch[CapsMod] == WCH_LGTR;
 286             *pwcTranslatedChar = vkPtr->wch[CapsMod];
 287
 288             DPRINT("%d %04x: CapsMod %08x CapsState %08x Char %04x\n",
 289                    nMod, wVirtKey,
 290                    CapsMod, CapsState, *pwcTranslatedChar);
 291
 292             if( *pbDead )
 293             {
 294                vkPtr = (PVK_TO_WCHARS10)(((BYTE *)vkPtr) + size_this_entry);
 295                if( vkPtr->VirtualKey != 0xff )
 296                {
 297                   DPRINT( "Found dead key with no trailer in the table.\n" );
 298                   DPRINT( "VK: %04x, ADDR: %p\n", wVirtKey, vkPtr );
 299                   return FALSE;
 300                }
 301                *pwcTranslatedChar = vkPtr->wch[CapsMod];
 302             }
 303             return TRUE;
 304          }
 305          vkPtr = (PVK_TO_WCHARS10)(((BYTE *)vkPtr) + size_this_entry);
 306       }
 307    }
 308    return FALSE;
 309 }
 310
 311 static
 312 int APIENTRY
 313 ToUnicodeInner(UINT wVirtKey,
 314                UINT wScanCode,
 315                PBYTE lpKeyState,
 316                LPWSTR pwszBuff,
 317                int cchBuff,
 318                UINT wFlags,
 319                PKBDTABLES pkKT)
 320 {
 321    WCHAR wcTranslatedChar;
 322    BOOL bDead;
 323    BOOL bLigature;
 324
 325    if( !pkKT )
 326       return 0;
 327
 328    if( TryToTranslateChar( wVirtKey,
 329                            ModBits( pkKT, lpKeyState ),
 330                            &bDead,
 331                            &bLigature,
 332                            &wcTranslatedChar,
 333                            pkKT ) )
 334    {
 335       if( bLigature )
 336       {
 337          DPRINT("Not handling ligature (yet)\n" );
 338          return 0;
 339       }
 340
 341       if( cchBuff > 0 )
 342          pwszBuff[0] = wcTranslatedChar;
 343
 344       return bDead ? -1 : 1;
 345    }
 346
 347    return 0;
 348 }
 349
 350
 351 DWORD FASTCALL UserGetKeyState(DWORD key)
 352 {
 353    DWORD ret = 0;
 354
 355    if( key < 0x100 )
 356    {
 357       ret = ((DWORD)(gQueueKeyStateTable[key] & KS_DOWN_BIT) << 8 ) |
 358             (gQueueKeyStateTable[key] & KS_LOCK_BIT);
 359    }
 360
 361    return ret;
 362 }
 363
 364
 365 SHORT
 366 APIENTRY
 367 NtUserGetKeyState(
 368    INT key)
 369 {
 370    DECLARE_RETURN(DWORD);
 371
 372    DPRINT("Enter NtUserGetKeyState\n");
 373    UserEnterExclusive();
 374
 375    RETURN(UserGetKeyState(key));
 376
 377 CLEANUP:
 378    DPRINT("Leave NtUserGetKeyState, ret=%i\n",_ret_);
 379    UserLeave();
 380    END_CLEANUP;
 381 }
 382
 383
 384
 385 DWORD FASTCALL UserGetAsyncKeyState(DWORD key)
 386 {
 387    DWORD ret = 0;
 388
 389    if( key < 0x100 )
 390    {
 391       ret = ((DWORD)(gQueueKeyStateTable[key] & KS_DOWN_BIT) << 8 ) |
 392             (gQueueKeyStateTable[key] & KS_LOCK_BIT);
 393    }
 394
 395    return ret;
 396 }
 397
 398
 399
 400 SHORT
 401 APIENTRY
 402 NtUserGetAsyncKeyState(
 403    INT key)
 404 {
 405    DECLARE_RETURN(SHORT);
 406
 407    DPRINT("Enter NtUserGetAsyncKeyState\n");
 408    UserEnterExclusive();
 409
 410    RETURN((SHORT)UserGetAsyncKeyState(key));
 411
 412 CLEANUP:
 413    DPRINT("Leave NtUserGetAsyncKeyState, ret=%i\n",_ret_);
 414    UserLeave();
 415    END_CLEANUP;
 416 }
 417
 418
 419
 420 BOOL FASTCALL
 421 IntTranslateKbdMessage(LPMSG lpMsg,
 422                        HKL dwhkl)
 423 {
 424    PTHREADINFO pti;
 425    static INT dead_char = 0;
 426    LONG UState = 0;
 427    WCHAR wp[2] = { 0 };
 428    MSG NewMsg = { 0 };
 429    PKBDTABLES keyLayout;
 430    BOOL Result = FALSE;
 431    DWORD ScanCode = 0;
 432
 433    pti = PsGetCurrentThreadWin32Thread();
 434    keyLayout = pti->KeyboardLayout->KBTables;
 435    if( !keyLayout )
 436       return FALSE;
 437
 438    if (lpMsg->message < WM_KEYFIRST || lpMsg->message > WM_KEYLAST)
 439       return FALSE;
 440    if (lpMsg->message != WM_KEYDOWN && lpMsg->message != WM_SYSKEYDOWN)
 441       return FALSE;
 442
 443    /* All messages have to contain the cursor point. */
 444    NewMsg.pt = gpsi->ptCursor;
 445
 446     switch (lpMsg->wParam)
 447     {
 448     case VK_PACKET:
 449         NewMsg.message = (lpMsg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
 450         NewMsg.hwnd = lpMsg->hwnd;
 451         NewMsg.wParam = HIWORD(lpMsg->lParam);
 452         NewMsg.lParam = LOWORD(lpMsg->lParam);
 453         MsqPostMessage(pti->MessageQueue, &NewMsg, FALSE, QS_KEY);
 454         return TRUE;
 455     }
 456
 457    ScanCode = (lpMsg->lParam >> 16) & 0xff;
 458
 459    UState = ToUnicodeInner(lpMsg->wParam, HIWORD(lpMsg->lParam) & 0xff,
 460                            gQueueKeyStateTable, wp, 2, 0,
 461                            keyLayout );
 462
 463    if (UState == 1)
 464    {
 465       NewMsg.message = (lpMsg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
 466       if (dead_char)
 467       {
 468          ULONG i;
 469          WCHAR first, second;
 470          DPRINT("PREVIOUS DEAD CHAR: %c\n", dead_char);
 471
 472          for( i = 0; keyLayout->pDeadKey[i].dwBoth; i++ )
 473          {
 474             first = keyLayout->pDeadKey[i].dwBoth >> 16;
 475             second = keyLayout->pDeadKey[i].dwBoth;
 476             if (first == dead_char && second == wp[0])
 477             {
 478                wp[0] = keyLayout->pDeadKey[i].wchComposed;
 479                dead_char = 0;
 480                break;
 481             }
 482          }
 483
 484          DPRINT("FINAL CHAR: %c\n", wp[0]);
 485       }
 486
 487       if (dead_char)
 488       {
 489          NewMsg.hwnd = lpMsg->hwnd;
 490          NewMsg.wParam = dead_char;
 491          NewMsg.lParam = lpMsg->lParam;
 492          dead_char = 0;
 493          MsqPostMessage(pti->MessageQueue, &NewMsg, FALSE, QS_KEY);
 494       }
 495
 496       NewMsg.hwnd = lpMsg->hwnd;
 497       NewMsg.wParam = wp[0];
 498       NewMsg.lParam = lpMsg->lParam;
 499       DPRINT( "CHAR='%c' %04x %08x\n", wp[0], wp[0], lpMsg->lParam );
 500       MsqPostMessage(pti->MessageQueue, &NewMsg, FALSE, QS_KEY);
 501       Result = TRUE;
 502    }
 503    else if (UState == -1)
 504    {
 505       NewMsg.message =
 506          (lpMsg->message == WM_KEYDOWN) ? WM_DEADCHAR : WM_SYSDEADCHAR;
 507       NewMsg.hwnd = lpMsg->hwnd;
 508       NewMsg.wParam = wp[0];
 509       NewMsg.lParam = lpMsg->lParam;
 510       dead_char = wp[0];
 511       MsqPostMessage(pti->MessageQueue, &NewMsg, FALSE, QS_KEY);
 512       Result = TRUE;
 513    }
 514
 515    return Result;
 516 }
 517
 518 DWORD
 519 APIENTRY
 520 NtUserGetKeyboardState(
 521    LPBYTE lpKeyState)
 522 {
 523    BOOL Result = TRUE;
 524    DECLARE_RETURN(DWORD);
 525
 526    DPRINT("Enter NtUserGetKeyboardState\n");
 527    UserEnterShared();
 528
 529    if (lpKeyState)
 530    {
 531       if(!NT_SUCCESS(MmCopyToCaller(lpKeyState, gQueueKeyStateTable, 256)))
 532          Result = FALSE;
 533    }
 534
 535    RETURN(Result);
 536
 537 CLEANUP:
 538    DPRINT("Leave NtUserGetKeyboardState, ret=%i\n",_ret_);
 539    UserLeave();
 540    END_CLEANUP;
 541 }
 542
 543 BOOL
 544 APIENTRY
 545 NtUserSetKeyboardState(LPBYTE lpKeyState)
 546 {
 547    BOOL Result = TRUE;
 548    DECLARE_RETURN(DWORD);
 549
 550    DPRINT("Enter NtUserSetKeyboardState\n");
 551    UserEnterExclusive();
 552
 553    if (lpKeyState)
 554    {
 555       if(! NT_SUCCESS(MmCopyFromCaller(gQueueKeyStateTable, lpKeyState, 256)))
 556          Result = FALSE;
 557    }
 558
 559    RETURN(Result);
 560
 561 CLEANUP:
 562    DPRINT("Leave NtUserSetKeyboardState, ret=%i\n",_ret_);
 563    UserLeave();
 564    END_CLEANUP;
 565 }
 566
 567 static UINT VkToScan( UINT Code, BOOL ExtCode, PKBDTABLES pkKT )
 568 {
 569    int i;
 570
 571    for( i = 0; i < pkKT->bMaxVSCtoVK; i++ )
 572    {
 573       if( pkKT->pusVSCtoVK[i] == Code )
 574       {
 575          return i;
 576       }
 577    }
 578
 579    return 0;
 580 }
 581
 582 UINT ScanToVk( UINT Code, BOOL ExtKey, PKBDTABLES pkKT )
 583 {
 584    if( !pkKT )
 585    {
 586       DPRINT("ScanToVk: No layout\n");
 587       return 0;
 588    }
 589
 590    if( ExtKey )
 591    {
 592       int i;
 593
 594       for( i = 0; pkKT->pVSCtoVK_E0[i].Vsc; i++ )
 595       {
 596          if( pkKT->pVSCtoVK_E0[i].Vsc == Code )
 597             return pkKT->pVSCtoVK_E0[i].Vk & 0xff;
 598       }
 599       for( i = 0; pkKT->pVSCtoVK_E1[i].Vsc; i++ )
 600       {
 601          if( pkKT->pVSCtoVK_E1[i].Vsc == Code )
 602             return pkKT->pVSCtoVK_E1[i].Vk & 0xff;
 603       }
 604
 605       return 0;
 606    }
 607    else
 608    {
 609       if( Code >= pkKT->bMaxVSCtoVK )
 610       {
 611          return 0;
 612       }
 613       return pkKT->pusVSCtoVK[Code] & 0xff;
 614    }
 615 }
 616
 617 /*
 618  * Map a virtual key code, or virtual scan code, to a scan code, key code,
 619  * or unshifted unicode character.
 620  *
 621  * Code: See Below
 622  * Type:
 623  * 0 -- Code is a virtual key code that is converted into a virtual scan code
 624  *      that does not distinguish between left and right shift keys.
 625  * 1 -- Code is a virtual scan code that is converted into a virtual key code
 626  *      that does not distinguish between left and right shift keys.
 627  * 2 -- Code is a virtual key code that is converted into an unshifted unicode
 628  *      character.
 629  * 3 -- Code is a virtual scan code that is converted into a virtual key code
 630  *      that distinguishes left and right shift keys.
 631  * KeyLayout: Keyboard layout handle (currently, unused)
 632  *
 633  * @implemented
 634  */
 635
 636 static UINT IntMapVirtualKeyEx( UINT Code, UINT Type, PKBDTABLES keyLayout )
 637 {
 638    UINT ret = 0;
 639
 640    switch( Type )
 641    {
 642       case 0:
 643          if( Code == VK_SHIFT )
 644             Code = VK_LSHIFT;
 645          if( Code == VK_MENU )
 646             Code = VK_LMENU;
 647          if( Code == VK_CONTROL )
 648             Code = VK_LCONTROL;
 649          ret = VkToScan( Code, FALSE, keyLayout );
 650          break;
 651
 652       case 1:
 653          ret =
 654             DontDistinguishShifts
 655             (IntMapVirtualKeyEx( Code, 3, keyLayout ) );
 656          break;
 657
 658       case 2:
 659          {
 660             WCHAR wp[2] = {0};
 661
 662             ret = VkToScan( Code, FALSE, keyLayout );
 663             ToUnicodeInner( Code, ret, 0, wp, 2, 0, keyLayout );
 664             ret = wp[0];
 665          }
 666          break;
 667
 668       case 3:
 669
 670          ret = ScanToVk( Code, FALSE, keyLayout );
 671          break;
 672    }
 673
 674    return ret;
 675 }
 676
 677 UINT
 678 APIENTRY
 679 NtUserMapVirtualKeyEx( UINT Code, UINT Type, DWORD keyboardId, HKL dwhkl )
 680 {
 681    PTHREADINFO pti;
 682    PKBDTABLES keyLayout;
 683    DECLARE_RETURN(UINT);
 684
 685    DPRINT("Enter NtUserMapVirtualKeyEx\n");
 686    UserEnterExclusive();
 687
 688    pti = PsGetCurrentThreadWin32Thread();
 689    keyLayout = pti ? pti->KeyboardLayout->KBTables : 0;
 690
 691    if( !keyLayout )
 692       RETURN(0);
 693
 694    RETURN(IntMapVirtualKeyEx( Code, Type, keyLayout ));
 695
 696 CLEANUP:
 697    DPRINT("Leave NtUserMapVirtualKeyEx, ret=%i\n",_ret_);
 698    UserLeave();
 699    END_CLEANUP;
 700 }
 701
 702
 703 int
 704 APIENTRY
 705 NtUserToUnicodeEx(
 706    UINT wVirtKey,
 707    UINT wScanCode,
 708    PBYTE lpKeyState,
 709    LPWSTR pwszBuff,
 710    int cchBuff,
 711    UINT wFlags,
 712    HKL dwhkl )
 713 {
 714    PTHREADINFO pti;
 715    BYTE KeyStateBuf[0x100];
 716    PWCHAR OutPwszBuff = 0;
 717    int ret = 0;
 718    DECLARE_RETURN(int);
 719
 720    DPRINT("Enter NtUserSetKeyboardState\n");
 721    UserEnterShared();//fixme: this syscall doesnt seem to need any locking...
 722
 723
 724    if( !NT_SUCCESS(MmCopyFromCaller(KeyStateBuf,
 725                                     lpKeyState,
 726                                     sizeof(KeyStateBuf))) )
 727    {
 728       DPRINT1( "Couldn't copy key state from caller.\n" );
 729       RETURN(0);
 730    }
 731
 732    /* Virtual code is correct and key is pressed currently? */
 733    if (wVirtKey < 0x100 && KeyStateBuf[wVirtKey] & KS_DOWN_BIT)
 734    {
 735       OutPwszBuff = ExAllocatePoolWithTag(NonPagedPool,sizeof(WCHAR) * cchBuff, TAG_STRING);
 736       if( !OutPwszBuff )
 737       {
 738          DPRINT1( "ExAllocatePool(%d) failed\n", sizeof(WCHAR) * cchBuff);
 739          RETURN(0);
 740       }
 741       RtlZeroMemory( OutPwszBuff, sizeof( WCHAR ) * cchBuff );
 742
 743       pti = PsGetCurrentThreadWin32Thread();
 744       ret = ToUnicodeInner( wVirtKey,
 745                             wScanCode,
 746                             KeyStateBuf,
 747                             OutPwszBuff,
 748                             cchBuff,
 749                             wFlags,
 750                             pti ? pti->KeyboardLayout->KBTables : 0 );
 751
 752       MmCopyToCaller(pwszBuff,OutPwszBuff,sizeof(WCHAR)*cchBuff);
 753       ExFreePoolWithTag(OutPwszBuff, TAG_STRING);
 754    }
 755    else
 756       ret = 0;
 757
 758    RETURN(ret);
 759
 760 CLEANUP:
 761    DPRINT("Leave NtUserSetKeyboardState, ret=%i\n",_ret_);
 762    UserLeave();
 763    END_CLEANUP;
 764 }
 765
 766 static int W32kSimpleToupper( int ch )
 767 {
 768    if( ch >= 'a' && ch <= 'z' )
 769       ch = ch - 'a' + 'A';
 770    return ch;
 771 }
 772
 773 DWORD
 774 APIENTRY
 775 NtUserGetKeyNameText( LONG lParam, LPWSTR lpString, int nSize )
 776 {
 777    PTHREADINFO pti;
 778    int i;
 779    DWORD ret = 0;
 780    UINT CareVk = 0;
 781    UINT VkCode = 0;
 782    UINT ScanCode = (lParam >> 16) & 0xff;
 783    BOOL ExtKey = lParam & (1<<24) ? TRUE : FALSE;
 784    PKBDTABLES keyLayout;
 785    VSC_LPWSTR *KeyNames;
 786    DECLARE_RETURN(DWORD);
 787
 788    DPRINT("Enter NtUserGetKeyNameText\n");
 789    UserEnterShared();
 790
 791    pti = PsGetCurrentThreadWin32Thread();
 792    keyLayout = pti ? pti->KeyboardLayout->KBTables : 0;
 793
 794    if( !keyLayout || nSize < 1 )
 795       RETURN(0);
 796
 797    if( lParam & (1<<25) )
 798    {
 799       CareVk = VkCode = ScanToVk( ScanCode, ExtKey, keyLayout );
 800       switch (VkCode)
 801       {
 802           case VK_RSHIFT:
 803               ScanCode |= 0x100;
 804           case VK_LSHIFT:
 805              VkCode = VK_SHIFT;
 806              break;
 807           case VK_LCONTROL:
 808           case VK_RCONTROL:
 809              VkCode = VK_CONTROL;
 810              break;
 811           case VK_LMENU:
 812           case VK_RMENU:
 813              VkCode = VK_MENU;
 814              break;
 815       }
 816    }
 817    else
 818    {
 819       VkCode = ScanToVk( ScanCode, ExtKey, keyLayout );
 820    }
 821
 822    KeyNames = 0;
 823
 824    if( CareVk != VkCode )
 825       ScanCode = VkToScan( VkCode, ExtKey, keyLayout );
 826
 827    if( ExtKey )
 828       KeyNames = keyLayout->pKeyNamesExt;
 829    else
 830       KeyNames = keyLayout->pKeyNames;
 831
 832    for( i = 0; KeyNames[i].pwsz; i++ )
 833    {
 834       if( KeyNames[i].vsc == ScanCode )
 835       {
 836          UINT StrLen = wcslen(KeyNames[i].pwsz);
 837          UINT StrMax = StrLen > (nSize - 1) ? (nSize - 1) : StrLen;
 838          WCHAR null_wc = 0;
 839          if( NT_SUCCESS( MmCopyToCaller( lpString,
 840                                          KeyNames[i].pwsz,
 841                                          StrMax * sizeof(WCHAR) ) ) &&
 842                NT_SUCCESS( MmCopyToCaller( lpString + StrMax,
 843                                            &null_wc,
 844                                            sizeof( WCHAR ) ) ) )
 845          {
 846             ret = StrMax;
 847             break;
 848          }
 849       }
 850    }
 851
 852    if( ret == 0 )
 853    {
 854       WCHAR UCName[2];
 855
 856       UCName[0] = W32kSimpleToupper(IntMapVirtualKeyEx( VkCode, 2, keyLayout ));
 857       UCName[1] = 0;
 858       ret = 1;
 859
 860       if( !NT_SUCCESS(MmCopyToCaller( lpString, UCName, 2 * sizeof(WCHAR) )) )
 861          RETURN(0);
 862    }
 863
 864    RETURN(ret);
 865
 866 CLEANUP:
 867    DPRINT("Leave NtUserGetKeyNameText, ret=%i\n",_ret_);
 868    UserLeave();
 869    END_CLEANUP;
 870 }
 871
 872 /*
 873  * Filter this message according to the current key layout, setting wParam
 874  * appropriately.
 875  */
 876
 877 VOID FASTCALL
 878 W32kKeyProcessMessage(LPMSG Msg,
 879                       PKBDTABLES KeyboardLayout,
 880                       BYTE Prefix)
 881 {
 882    DWORD ScanCode = 0, ModifierBits = 0;
 883    DWORD i = 0;
 884    DWORD BaseMapping = 0;
 885    DWORD RawVk = 0;
 886    static WORD NumpadConversion[][2] =
 887       { { VK_DELETE, VK_DECIMAL },
 888         { VK_INSERT, VK_NUMPAD0 },
 889         { VK_END,    VK_NUMPAD1 },
 890         { VK_DOWN,   VK_NUMPAD2 },
 891         { VK_NEXT,   VK_NUMPAD3 },
 892         { VK_LEFT,   VK_NUMPAD4 },
 893         { VK_CLEAR,  VK_NUMPAD5 },
 894         { VK_RIGHT,  VK_NUMPAD6 },
 895         { VK_HOME,   VK_NUMPAD7 },
 896         { VK_UP,     VK_NUMPAD8 },
 897         { VK_PRIOR,  VK_NUMPAD9 },
 898         { 0,0 } };
 899    PVSC_VK VscVkTable = NULL;
 900
 901    if( !KeyboardLayout || !Msg ||
 902          (Msg->message != WM_KEYDOWN && Msg->message != WM_SYSKEYDOWN &&
 903           Msg->message != WM_KEYUP   && Msg->message != WM_SYSKEYUP) )
 904    {
 905       return;
 906    }
 907
 908    /* arty -- handle numpad -- On real windows, the actual key produced
 909     * by the messaging layer is different based on the state of numlock. */
 910    ModifierBits = ModBits(KeyboardLayout,gQueueKeyStateTable);
 911
 912    /* Get the raw scan code, so we can look up whether the key is a numpad
 913     * key
 914     *
 915     * Shift and the LP_EXT_BIT cancel. */
 916    ScanCode = (Msg->lParam >> 16) & 0xff;
 917    BaseMapping = Msg->wParam =
 918                     IntMapVirtualKeyEx( ScanCode, 1, KeyboardLayout );
 919    if( Prefix == 0 )
 920    {
 921       if( ScanCode >= KeyboardLayout->bMaxVSCtoVK )
 922          RawVk = 0xff;
 923       else
 924          RawVk = KeyboardLayout->pusVSCtoVK[ScanCode];
 925    }
 926    else
 927    {
 928       if( Prefix == 0xE0 )
 929       {
 930          /* ignore shift codes */
 931          if( ScanCode == 0x2A || ScanCode == 0x36 )
 932          {
 933             return;
 934          }
 935          VscVkTable = KeyboardLayout->pVSCtoVK_E0;
 936       }
 937       else if( Prefix == 0xE1 )
 938       {
 939          VscVkTable = KeyboardLayout->pVSCtoVK_E1;
 940       }
 941
 942       RawVk = 0xff;
 943       while (VscVkTable->Vsc)
 944       {
 945          if( VscVkTable->Vsc == ScanCode )
 946          {
 947             RawVk = VscVkTable->Vk;
 948          }
 949          VscVkTable++;
 950       }
 951    }
 952
 953    if ((ModifierBits & NUMLOCK_BIT) &&
 954          !(ModifierBits & GetShiftBit(KeyboardLayout, VK_SHIFT)) &&
 955          (RawVk & KNUMP) &&
 956          !(Msg->lParam & LP_EXT_BIT))
 957    {
 958       /* The key in question is a numpad key.  Search for a translation. */
 959       for (i = 0; NumpadConversion[i][0]; i++)
 960       {
 961          if ((BaseMapping & 0xff) == NumpadConversion[i][0]) /* RawVk? */
 962          {
 963             Msg->wParam = NumpadConversion[i][1];
 964             break;
 965          }
 966       }
 967    }
 968
 969    DPRINT("Key: [%04x -> %04x]\n", BaseMapping, Msg->wParam);
 970
 971    /* Now that we have the VK, we can set the keymap appropriately
 972     * This is a better place for this code, as it's guaranteed to be
 973     * run, unlike translate message. */
 974    if (Msg->message == WM_KEYDOWN || Msg->message == WM_SYSKEYDOWN)
 975    {
 976       SetKeyState( ScanCode, Msg->wParam, Msg->lParam & LP_EXT_BIT,
 977                    TRUE ); /* Strike key */
 978    }
 979    else if (Msg->message == WM_KEYUP || Msg->message == WM_SYSKEYUP)
 980    {
 981       SetKeyState( ScanCode, Msg->wParam, Msg->lParam & LP_EXT_BIT,
 982                    FALSE ); /* Release key */
 983    }
 984
 985    /* We need to unset SYSKEYDOWN if the ALT key is an ALT+Gr */
 986    if( gQueueKeyStateTable[VK_RMENU] & KS_DOWN_BIT )
 987    {
 988       if( Msg->message == WM_SYSKEYDOWN )
 989          Msg->message = WM_KEYDOWN;
 990       else
 991          Msg->message = WM_KEYUP;
 992    }
 993
 994 }
 995
 996
 997
 998 DWORD FASTCALL
 999 UserGetKeyboardType(
1000    DWORD TypeFlag)
1001 {
1002    switch(TypeFlag)
1003    {
1004       case 0:        /* Keyboard type */
1005          return 4;    /* AT-101 */
1006       case 1:        /* Keyboard Subtype */
1007          return 0;    /* There are no defined subtypes */
1008       case 2:        /* Number of F-keys */
1009          return 12;   /* We're doing an 101 for now, so return 12 F-keys */
1010       default:
1011          DPRINT1("Unknown type!\n");
1012          return 0;    /* The book says 0 here, so 0 */
1013    }
1014 }
1015
1016
1017 /*
1018     Based on TryToTranslateChar, instead of processing VirtualKey match,
1019     look for wChar match.
1020  */
1021 DWORD
1022 APIENTRY
1023 NtUserVkKeyScanEx(
1024    WCHAR wChar,
1025    HKL hKeyboardLayout,
1026    BOOL UsehKL ) // TRUE from KeyboardLayout, FALSE from pkbl = (THREADINFO)->KeyboardLayout
1027 {
1028    PKBDTABLES KeyLayout;
1029    PVK_TO_WCHAR_TABLE vtwTbl;
1030    PVK_TO_WCHARS10 vkPtr;
1031    size_t size_this_entry;
1032    int nMod;
1033    PKBL pkbl = NULL;
1034    DWORD CapsMod = 0, CapsState = 0, Ret = -1;
1035
1036    DPRINT("NtUserVkKeyScanEx() wChar %d, KbdLayout 0x%p\n", wChar, hKeyboardLayout);
1037    UserEnterShared();
1038
1039    if (UsehKL)
1040    {
1041       if ( !hKeyboardLayout || !(pkbl = UserHklToKbl(hKeyboardLayout)))
1042       goto Exit;
1043    }
1044    else // From VkKeyScanAW it is FALSE so KeyboardLayout is white noise.
1045    {
1046      pkbl = ((PTHREADINFO)PsGetCurrentThreadWin32Thread())->KeyboardLayout;
1047    }
1048
1049    KeyLayout = pkbl->KBTables;
1050
1051    for (nMod = 0; KeyLayout->pVkToWcharTable[nMod].nModifications; nMod++)
1052    {
1053       vtwTbl = &KeyLayout->pVkToWcharTable[nMod];
1054       size_this_entry = vtwTbl->cbSize;
1055       vkPtr = (PVK_TO_WCHARS10)((BYTE *)vtwTbl->pVkToWchars);
1056
1057       while(vkPtr->VirtualKey)
1058       {
1059          /*
1060             0x01 Shift key
1061             0x02 Ctrl key
1062             0x04 Alt key
1063             Should have only 8 valid possibilities. Including zero.
1064           */
1065          for(CapsState = 0; CapsState < vtwTbl->nModifications; CapsState++)
1066          {
1067             if(vkPtr->wch[CapsState] == wChar)
1068             {
1069                CapsMod = KeyLayout->pCharModifiers->ModNumber[CapsState];
1070                DPRINT("nMod %d wC %04x: CapsMod %08x CapsState %08x MaxModBits %08x\n",
1071                       nMod, wChar, CapsMod, CapsState, KeyLayout->pCharModifiers->wMaxModBits);
1072                Ret = ((CapsMod << 8)|(vkPtr->VirtualKey & 0xff));
1073                goto Exit;
1074             }
1075          }
1076          vkPtr = (PVK_TO_WCHARS10)(((BYTE *)vkPtr) + size_this_entry);
1077       }
1078    }
1079 Exit:
1080    UserLeave();
1081    return Ret;
1082 }
1083
1084
1085 /* EOF */