dlls/wintab32/context.c

   1 /*
   2  * Tablet Context
   3  *
   4  * Copyright 2002 Patrik Stridvall
   5  * Copyright 2003 CodeWeavers, Aric Stewart
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <stdarg.h>
  26
  27 #include "windef.h"
  28 #include "winerror.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31
  32 #include "wintab.h"
  33 #include "wintab_internal.h"
  34
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(wintab32);
  38
  39 /*
  40  * Documentation found at
  41  * http://www.csl.sony.co.jp/projects/ar/restricted/wintabl.html
  42  */
  43
  44 static BOOL gLoaded;
  45 static LPOPENCONTEXT gOpenContexts;
  46 static HCTX gTopContext = (HCTX)0xc00;
  47
  48 static char* DUMPBITS(int x, char* buf)
  49 {
  50     strcpy(buf,"{");
  51    if (x&PK_CONTEXT) strcat(buf,"PK_CONTEXT ");
  52    if (x&PK_STATUS) strcat(buf, "PK_STATUS ");
  53    if (x&PK_TIME) strcat(buf, "PK_TIME ");
  54    if (x&PK_CHANGED) strcat(buf, "PK_CHANGED ");
  55    if (x&PK_SERIAL_NUMBER) strcat(buf, "PK_SERIAL_NUMBER ");
  56    if (x&PK_CURSOR) strcat(buf, "PK_CURSOR ");
  57    if (x&PK_BUTTONS) strcat(buf, "PK_BUTTONS ");
  58    if (x&PK_X) strcat(buf, "PK_X ");
  59    if (x&PK_Y) strcat(buf, "PK_Y ");
  60    if (x&PK_Z) strcat(buf, "PK_Z ");
  61    if (x&PK_NORMAL_PRESSURE) strcat(buf, "PK_NORMAL_PRESSURE ");
  62    if (x&PK_TANGENT_PRESSURE) strcat(buf, "PK_TANGENT_PRESSURE ");
  63    if (x&PK_ORIENTATION) strcat(buf, "PK_ORIENTATION ");
  64    if (x&PK_ROTATION) strcat(buf, "PK_ROTATION ");
  65     strcat(buf, "}");
  66     return buf;
  67 }
  68
  69 static inline void DUMPPACKET(WTPACKET packet)
  70 {
  71     TRACE("pkContext: 0x%x pkStatus: 0x%x pkTime : 0x%x pkChanged: 0x%x pkSerialNumber: 0x%x pkCursor : %i pkButtons: %x pkX: %li pkY: %li pkZ: %li pkNormalPressure: %i pkTangentPressure: %i pkOrientation: (%i,%i,%i) pkRotation: (%i,%i,%i)\n"
  72 ,(UINT)packet.pkContext,
  73     (UINT)packet.pkStatus,
  74     (UINT)packet.pkTime,
  75     (UINT)packet.pkChanged,
  76     packet.pkSerialNumber,
  77     packet.pkCursor,
  78     (UINT)packet.pkButtons,
  79     packet.pkX,
  80     packet.pkY,
  81     packet.pkZ,
  82     packet.pkNormalPressure,
  83     packet.pkTangentPressure,
  84     packet.pkOrientation.orAzimuth,
  85         packet.pkOrientation.orAltitude, packet.pkOrientation.orTwist,
  86     packet.pkRotation.roPitch,
  87         packet.pkRotation.roRoll, packet.pkRotation.roYaw);
  88 }
  89
  90 static inline void DUMPCONTEXT(LOGCONTEXTA lc)
  91 {
  92         CHAR mmsg[4000];
  93         CHAR bits[100];
  94         CHAR bits1[100];
  95         CHAR bits2[100];
  96
  97         sprintf(mmsg,"%s, %x, %x, %x, %x, %x, %x, %x%s, %x%s, %x%s, %x, %x, %i, %i, %i, %li ,%li, %li, %li, %li, %li,%li, %li, %li, %li, %li, %li, %i, %i, %i, %i, %i %li %li\n",
  98     debugstr_a(lc.lcName), lc.lcOptions, lc.lcStatus, lc.lcLocks, lc.lcMsgBase,
  99 lc.lcDevice, lc.lcPktRate, (UINT)lc.lcPktData, DUMPBITS(lc.lcPktData,bits),
 100 (UINT)lc.lcPktMode, DUMPBITS(lc.lcPktMode,bits1), (UINT)lc.lcMoveMask,
 101 DUMPBITS(lc.lcMoveMask,bits2), (INT)lc.lcBtnDnMask, (INT)lc.lcBtnUpMask,
 102 (INT)lc.lcInOrgX, (INT)lc.lcInOrgY, (INT)lc.lcInOrgZ, lc.lcInExtX, lc.lcInExtY,
 103 lc.lcInExtZ, lc.lcOutOrgX, lc.lcOutOrgY, lc.lcOutOrgZ, lc.lcOutExtX,
 104 lc.lcOutExtY, lc.lcOutExtZ, lc.lcSensX, lc.lcSensY, lc.lcSensZ, lc.lcSysMode,
 105 lc.lcSysOrgX, lc.lcSysOrgY, lc.lcSysExtX, lc.lcSysExtY, lc.lcSysSensX,
 106 lc.lcSysSensY);
 107         TRACE("context: %s",mmsg);
 108 }
 109
 110
 111 /* Find an open context given the handle */
 112 static LPOPENCONTEXT TABLET_FindOpenContext(HCTX hCtx)
 113 {
 114     LPOPENCONTEXT ptr = gOpenContexts;
 115     while (ptr)
 116     {
 117         if (ptr->handle == hCtx) return ptr;
 118         ptr = ptr->next;
 119     }
 120     return NULL;
 121 }
 122
 123 static void LoadTablet()
 124 {
 125     TRACE("Initilizing the tablet to hwnd %p\n",hwndDefault);
 126     gLoaded= TRUE;
 127     pLoadTabletInfo(hwndDefault);
 128 }
 129
 130 int TABLET_PostTabletMessage(LPOPENCONTEXT newcontext, UINT msg, WPARAM wParam,
 131                              LPARAM lParam, BOOL send_always)
 132 {
 133     if ((send_always) || (newcontext->context.lcOptions & CXO_MESSAGES))
 134     {
 135         TRACE("Posting message %x to %x\n",msg, (UINT)newcontext->hwndOwner);
 136         return PostMessageA(newcontext->hwndOwner, msg, wParam, lParam);
 137     }
 138     return 0;
 139 }
 140
 141 static inline DWORD ScaleForContext(DWORD In, DWORD InOrg, DWORD InExt, DWORD
 142                                     OutOrg, DWORD OutExt)
 143 {
 144     if (((InExt > 0 )&&(OutExt > 0)) || ((InExt<0) && (OutExt < 0)))
 145         return ((In - InOrg) * abs(OutExt) / abs(InExt)) + OutOrg;
 146     else
 147         return ((abs(InExt) - (In - InOrg))*abs(OutExt) / abs(InExt)) + OutOrg;
 148 }
 149
 150 LPOPENCONTEXT FindOpenContext(HWND hwnd)
 151 {
 152     LPOPENCONTEXT ptr;
 153
 154     EnterCriticalSection(&csTablet);
 155     ptr = gOpenContexts;
 156     while (ptr)
 157     {
 158         TRACE("Trying Context %p (%p %p)\n",ptr->handle,hwnd,ptr->hwndOwner);
 159         if (ptr->hwndOwner == hwnd) break;
 160     }
 161     LeaveCriticalSection(&csTablet);
 162     return ptr;
 163 }
 164
 165 LPOPENCONTEXT AddPacketToContextQueue(LPWTPACKET packet, HWND hwnd)
 166 {
 167     LPOPENCONTEXT ptr=NULL;
 168
 169     EnterCriticalSection(&csTablet);
 170
 171     ptr = gOpenContexts;
 172     while (ptr)
 173     {
 174         TRACE("Trying Queue %p (%p %p)\n", ptr->handle, hwnd, ptr->hwndOwner);
 175
 176         if (ptr->hwndOwner == hwnd)
 177         {
 178             int tgt;
 179             if (!ptr->enabled)
 180             {
 181                 ptr = ptr->next;
 182                 continue;
 183             }
 184
 185             tgt = ptr->PacketsQueued;
 186
 187             packet->pkContext = ptr->handle;
 188
 189             /* translate packet data to the context */
 190
 191             /* Scale  as per documentation */
 192             packet->pkY = ScaleForContext(packet->pkY, ptr->context.lcInOrgY,
 193                                 ptr->context.lcInExtY, ptr->context.lcOutOrgY,
 194                                 ptr->context.lcOutExtY);
 195
 196             packet->pkX = ScaleForContext(packet->pkX, ptr->context.lcInOrgX,
 197                                 ptr->context.lcInExtX, ptr->context.lcOutOrgX,
 198                                 ptr->context.lcOutExtX);
 199
 200             /* flip the Y axis */
 201             if (ptr->context.lcOutExtY > 0)
 202                 packet->pkY = ptr->context.lcOutExtY - packet->pkY;
 203
 204             DUMPPACKET(*packet);
 205
 206             if (tgt + 1 == ptr->QueueSize)
 207             {
 208                 TRACE("Queue Overflow %p\n",ptr->handle);
 209                 packet->pkStatus = TPS_QUEUE_ERR;
 210             }
 211             else
 212             {
 213                 TRACE("Placed in queue %p index %i\n",ptr->handle,tgt);
 214                 memcpy(&ptr->PacketQueue[tgt], packet, sizeof
 215                         (WTPACKET));
 216                 ptr->PacketsQueued++;
 217
 218                 if (ptr->ActiveCursor != packet->pkCursor)
 219                 {
 220                     ptr->ActiveCursor = packet->pkCursor;
 221                     if (ptr->context.lcOptions & CXO_CSRMESSAGES)
 222                         TABLET_PostTabletMessage(ptr, WT_CSRCHANGE,
 223                           (WPARAM)packet->pkSerialNumber, (LPARAM)ptr->handle,
 224                             FALSE);
 225                 }
 226             }
 227             break;
 228          }
 229         ptr = ptr->next;
 230     }
 231     LeaveCriticalSection(&csTablet);
 232     TRACE("Done (%p)\n",ptr);
 233     return ptr;
 234 }
 235
 236 int static inline CopyTabletData(LPVOID target, LPVOID src, INT size)
 237 {
 238     memcpy(target,src,size);
 239     return(size);
 240 }
 241
 242 static INT TABLET_FindPacket(LPOPENCONTEXT context, UINT wSerial,
 243                                 LPWTPACKET *pkt)
 244 {
 245     int loop;
 246     int index  = -1;
 247     for (loop = 0; loop < context->PacketsQueued; loop++)
 248         if (context->PacketQueue[loop].pkSerialNumber == wSerial)
 249         {
 250             index = loop;
 251             *pkt = &context->PacketQueue[loop];
 252             break;
 253         }
 254
 255     TRACE("%i .. %i\n",context->PacketsQueued,index);
 256
 257     return index;
 258 }
 259
 260
 261 static LPVOID TABLET_CopyPacketData(LPOPENCONTEXT context, LPVOID lpPkt,
 262                                     LPWTPACKET wtp)
 263 {
 264     LPBYTE ptr;
 265     CHAR bits[100];
 266
 267     ptr = lpPkt;
 268     TRACE("Packet Bits %s\n",DUMPBITS(context->context.lcPktData,bits));
 269
 270     if (context->context.lcPktData & PK_CONTEXT)
 271         ptr+=CopyTabletData(ptr,&wtp->pkContext,sizeof(HCTX));
 272     if (context->context.lcPktData & PK_STATUS)
 273         ptr+=CopyTabletData(ptr,&wtp->pkStatus,sizeof(UINT));
 274     if (context->context.lcPktData & PK_TIME)
 275         ptr+=CopyTabletData(ptr,&wtp->pkTime,sizeof(LONG));
 276     if (context->context.lcPktData & PK_CHANGED)
 277         ptr+=CopyTabletData(ptr,&wtp->pkChanged,sizeof(WTPKT));
 278     if (context->context.lcPktData & PK_SERIAL_NUMBER)
 279         ptr+=CopyTabletData(ptr,&wtp->pkChanged,sizeof(UINT));
 280     if (context->context.lcPktData & PK_CURSOR)
 281         ptr+=CopyTabletData(ptr,&wtp->pkCursor,sizeof(UINT));
 282     if (context->context.lcPktData & PK_BUTTONS)
 283         ptr+=CopyTabletData(ptr,&wtp->pkButtons,sizeof(DWORD));
 284     if (context->context.lcPktData & PK_X)
 285         ptr+=CopyTabletData(ptr,&wtp->pkX,sizeof(DWORD));
 286     if (context->context.lcPktData & PK_Y)
 287         ptr+=CopyTabletData(ptr,&wtp->pkY,sizeof(DWORD));
 288     if (context->context.lcPktData & PK_Z)
 289         ptr+=CopyTabletData(ptr,&wtp->pkZ,sizeof(DWORD));
 290     if (context->context.lcPktData & PK_NORMAL_PRESSURE)
 291         ptr+=CopyTabletData(ptr,&wtp->pkNormalPressure,sizeof(UINT));
 292     if (context->context.lcPktData & PK_TANGENT_PRESSURE)
 293         ptr+=CopyTabletData(ptr,&wtp->pkTangentPressure,sizeof(UINT));
 294     if (context->context.lcPktData & PK_ORIENTATION)
 295         ptr+=CopyTabletData(ptr,&wtp->pkOrientation,sizeof(ORIENTATION));
 296     if (context->context.lcPktData & PK_ROTATION)
 297         ptr+=CopyTabletData(ptr,&wtp->pkRotation,sizeof(ROTATION));
 298
 299     /*TRACE("Copied %i bytes\n",(INT)ptr - (INT)lpPkt); */
 300     return ptr;
 301 }
 302
 303 static VOID TABLET_BlankPacketData(LPOPENCONTEXT context, LPVOID lpPkt, INT n)
 304 {
 305     int rc = 0;
 306
 307     if (context->context.lcPktData & PK_CONTEXT)
 308         rc +=sizeof(HCTX);
 309     if (context->context.lcPktData & PK_STATUS)
 310         rc +=sizeof(UINT);
 311     if (context->context.lcPktData & PK_TIME)
 312         rc += sizeof(LONG);
 313     if (context->context.lcPktData & PK_CHANGED)
 314         rc += sizeof(WTPKT);
 315     if (context->context.lcPktData & PK_SERIAL_NUMBER)
 316         rc += sizeof(UINT);
 317     if (context->context.lcPktData & PK_CURSOR)
 318         rc += sizeof(UINT);
 319     if (context->context.lcPktData & PK_BUTTONS)
 320         rc += sizeof(DWORD);
 321     if (context->context.lcPktData & PK_X)
 322         rc += sizeof(DWORD);
 323     if (context->context.lcPktData & PK_Y)
 324         rc += sizeof(DWORD);
 325     if (context->context.lcPktData & PK_Z)
 326         rc += sizeof(DWORD);
 327     if (context->context.lcPktData & PK_NORMAL_PRESSURE)
 328         rc += sizeof(UINT);
 329     if (context->context.lcPktData & PK_TANGENT_PRESSURE)
 330         rc += sizeof(UINT);
 331     if (context->context.lcPktData & PK_ORIENTATION)
 332         rc += sizeof(ORIENTATION);
 333     if (context->context.lcPktData & PK_ROTATION)
 334         rc += sizeof(ROTATION);
 335
 336     rc *= n;
 337     memset(lpPkt,0,rc);
 338 }
 339
 340
 341 /***********************************************************************
 342  *              WTInfoA (WINTAB32.20)
 343  */
 344 UINT WINAPI WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
 345 {
 346     if (gLoaded == FALSE)
 347          LoadTablet();
 348
 349     return pWTInfoA( wCategory, nIndex, lpOutput );
 350 }
 351
 352 /***********************************************************************
 353  *              WTInfoW (WINTAB32.1020)
 354  */
 355 UINT WINAPI WTInfoW(UINT wCategory, UINT nIndex, LPVOID lpOutput)
 356 {
 357     FIXME("(%u, %u, %p): stub\n", wCategory, nIndex, lpOutput);
 358
 359     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 360
 361     return 0;
 362 }
 363
 364 /***********************************************************************
 365  *              WTOpenA (WINTAB32.21)
 366  */
 367 HCTX WINAPI WTOpenA(HWND hWnd, LPLOGCONTEXTA lpLogCtx, BOOL fEnable)
 368 {
 369     LPOPENCONTEXT newcontext;
 370
 371     TRACE("(%p, %p, %u)\n", hWnd, lpLogCtx, fEnable);
 372     DUMPCONTEXT(*lpLogCtx);
 373
 374     newcontext = HeapAlloc(GetProcessHeap(), 0 , sizeof(OPENCONTEXT));
 375     memcpy(&(newcontext->context),lpLogCtx,sizeof(LOGCONTEXTA));
 376     newcontext->hwndOwner = hWnd;
 377     newcontext->enabled = fEnable;
 378     newcontext->ActiveCursor = -1;
 379     newcontext->QueueSize = 10;
 380     newcontext->PacketsQueued = 0;
 381     newcontext->PacketQueue=HeapAlloc(GetProcessHeap(),0,sizeof(WTPACKET)*10);
 382
 383     EnterCriticalSection(&csTablet);
 384     newcontext->handle = gTopContext++;
 385     newcontext->next = gOpenContexts;
 386     gOpenContexts = newcontext;
 387     LeaveCriticalSection(&csTablet);
 388
 389     pAttachEventQueueToTablet(hWnd);
 390
 391     TABLET_PostTabletMessage(newcontext, WT_CTXOPEN, (WPARAM)newcontext->handle,
 392                       newcontext->context.lcStatus, TRUE);
 393
 394     newcontext->context.lcStatus = CXS_ONTOP;
 395
 396     TABLET_PostTabletMessage(newcontext, WT_CTXOVERLAP,
 397                             (WPARAM)newcontext->handle,
 398                             newcontext->context.lcStatus, TRUE);
 399
 400     return newcontext->handle;
 401 }
 402
 403 /***********************************************************************
 404  *              WTOpenW (WINTAB32.1021)
 405  */
 406 HCTX WINAPI WTOpenW(HWND hWnd, LPLOGCONTEXTW lpLogCtx, BOOL fEnable)
 407 {
 408     FIXME("(%p, %p, %u): stub\n", hWnd, lpLogCtx, fEnable);
 409
 410     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 411
 412     return NULL;
 413 }
 414
 415 /***********************************************************************
 416  *              WTClose (WINTAB32.22)
 417  */
 418 BOOL WINAPI WTClose(HCTX hCtx)
 419 {
 420     LPOPENCONTEXT context,ptr;
 421
 422     TRACE("(%p)\n", hCtx);
 423
 424     EnterCriticalSection(&csTablet);
 425
 426     ptr = context = gOpenContexts;
 427
 428     while (context && (context->handle != hCtx))
 429     {
 430         ptr = context;
 431         context = context->next;
 432     }
 433     if (!context)
 434     {
 435         LeaveCriticalSection(&csTablet);
 436         return TRUE;
 437     }
 438
 439     if (context == gOpenContexts)
 440         gOpenContexts = context->next;
 441     else
 442         ptr->next = context->next;
 443
 444     LeaveCriticalSection(&csTablet);
 445
 446     TABLET_PostTabletMessage(context, WT_CTXCLOSE, (WPARAM)context->handle,
 447                       context->context.lcStatus,TRUE);
 448
 449     HeapFree(GetProcessHeap(),0,context->PacketQueue);
 450     HeapFree(GetProcessHeap(),0,context);
 451
 452     return TRUE;
 453 }
 454
 455 /***********************************************************************
 456  *              WTPacketsGet (WINTAB32.23)
 457  */
 458 int WINAPI WTPacketsGet(HCTX hCtx, int cMaxPkts, LPVOID lpPkts)
 459 {
 460     int limit;
 461     LPOPENCONTEXT context;
 462     LPVOID ptr = lpPkts;
 463
 464     TRACE("(%p, %d, %p)\n", hCtx, cMaxPkts, lpPkts);
 465
 466     if (!hCtx || !lpPkts) return 0;
 467
 468     EnterCriticalSection(&csTablet);
 469
 470     context = TABLET_FindOpenContext(hCtx);
 471     TABLET_BlankPacketData(context,lpPkts,cMaxPkts);
 472
 473     if (context->PacketsQueued == 0)
 474     {
 475         LeaveCriticalSection(&csTablet);
 476         return 0;
 477     }
 478
 479     for(limit = 0; limit < cMaxPkts && limit < context->PacketsQueued; limit++)
 480         ptr=TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[limit]);
 481
 482     if (limit < context->PacketsQueued)
 483     {
 484         memcpy(context->PacketQueue, &context->PacketQueue[limit],
 485             (context->QueueSize - (limit))*sizeof(WTPACKET));
 486     }
 487     context->PacketsQueued -= limit;
 488     LeaveCriticalSection(&csTablet);
 489
 490     TRACE("Copied %i packets\n",limit);
 491
 492     return limit;
 493 }
 494
 495 /***********************************************************************
 496  *              WTPacket (WINTAB32.24)
 497  */
 498 BOOL WINAPI WTPacket(HCTX hCtx, UINT wSerial, LPVOID lpPkt)
 499 {
 500     int rc = 0;
 501     LPOPENCONTEXT context;
 502     LPWTPACKET    wtp;
 503
 504     TRACE("(%p, %d, %p)\n", hCtx, wSerial, lpPkt);
 505
 506     if (!hCtx) return 0;
 507
 508     EnterCriticalSection(&csTablet);
 509
 510     context = TABLET_FindOpenContext(hCtx);
 511
 512     rc = TABLET_FindPacket(context ,wSerial, &wtp);
 513
 514     if (rc >= 0)
 515     {
 516         if (lpPkt)
 517            TABLET_CopyPacketData(context ,lpPkt, wtp);
 518
 519         if ((rc+1) < context->QueueSize)
 520         {
 521             memcpy(context->PacketQueue, &context->PacketQueue[rc+1],
 522                 (context->QueueSize - (rc+1))*sizeof(WTPACKET));
 523         }
 524         context->PacketsQueued -= (rc+1);
 525     }
 526     LeaveCriticalSection(&csTablet);
 527
 528     TRACE("Returning %i\n",rc+1);
 529     return rc+1;
 530 }
 531
 532 /***********************************************************************
 533  *              WTEnable (WINTAB32.40)
 534  */
 535 BOOL WINAPI WTEnable(HCTX hCtx, BOOL fEnable)
 536 {
 537     LPOPENCONTEXT context;
 538
 539     TRACE("(%p, %u)\n", hCtx, fEnable);
 540
 541     if (!hCtx) return 0;
 542
 543     EnterCriticalSection(&csTablet);
 544     context = TABLET_FindOpenContext(hCtx);
 545     context->enabled = fEnable;
 546     LeaveCriticalSection(&csTablet);
 547
 548     return TRUE;
 549 }
 550
 551 /***********************************************************************
 552  *              WTOverlap (WINTAB32.41)
 553  */
 554 BOOL WINAPI WTOverlap(HCTX hCtx, BOOL fToTop)
 555 {
 556     FIXME("(%p, %u): stub\n", hCtx, fToTop);
 557
 558     return TRUE;
 559 }
 560
 561 /***********************************************************************
 562  *              WTConfig (WINTAB32.61)
 563  */
 564 BOOL WINAPI WTConfig(HCTX hCtx, HWND hWnd)
 565 {
 566     FIXME("(%p, %p): stub\n", hCtx, hWnd);
 567
 568     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 569
 570     return FALSE;
 571 }
 572
 573 /***********************************************************************
 574  *              WTGetA (WINTAB32.61)
 575  */
 576 BOOL WINAPI WTGetA(HCTX hCtx, LPLOGCONTEXTA lpLogCtx)
 577 {
 578     LPOPENCONTEXT context;
 579
 580     TRACE("(%p, %p)\n", hCtx, lpLogCtx);
 581
 582     if (!hCtx) return 0;
 583
 584     EnterCriticalSection(&csTablet);
 585     context = TABLET_FindOpenContext(hCtx);
 586     memcpy(lpLogCtx,&context->context,sizeof(LOGCONTEXTA));
 587     LeaveCriticalSection(&csTablet);
 588
 589     return TRUE;
 590 }
 591
 592 /***********************************************************************
 593  *              WTGetW (WINTAB32.1061)
 594  */
 595 BOOL WINAPI WTGetW(HCTX hCtx, LPLOGCONTEXTW lpLogCtx)
 596 {
 597     FIXME("(%p, %p): stub\n", hCtx, lpLogCtx);
 598
 599     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 600
 601     return FALSE;
 602 }
 603
 604 /***********************************************************************
 605  *              WTSetA (WINTAB32.62)
 606  */
 607 BOOL WINAPI WTSetA(HCTX hCtx, LPLOGCONTEXTA lpLogCtx)
 608 {
 609     FIXME("(%p, %p): stub\n", hCtx, lpLogCtx);
 610
 611     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 612
 613     return FALSE;
 614 }
 615
 616 /***********************************************************************
 617  *              WTSetW (WINTAB32.1062)
 618  */
 619 BOOL WINAPI WTSetW(HCTX hCtx, LPLOGCONTEXTW lpLogCtx)
 620 {
 621     FIXME("(%p, %p): stub\n", hCtx, lpLogCtx);
 622
 623     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 624
 625     return FALSE;
 626 }
 627
 628 /***********************************************************************
 629  *              WTExtGet (WINTAB32.63)
 630  */
 631 BOOL WINAPI WTExtGet(HCTX hCtx, UINT wExt, LPVOID lpData)
 632 {
 633     FIXME("(%p, %u, %p): stub\n", hCtx, wExt, lpData);
 634
 635     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 636
 637     return FALSE;
 638 }
 639
 640 /***********************************************************************
 641  *              WTExtSet (WINTAB32.64)
 642  */
 643 BOOL WINAPI WTExtSet(HCTX hCtx, UINT wExt, LPVOID lpData)
 644 {
 645     FIXME("(%p, %u, %p): stub\n", hCtx, wExt, lpData);
 646
 647     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 648
 649     return FALSE;
 650 }
 651
 652 /***********************************************************************
 653  *              WTSave (WINTAB32.65)
 654  */
 655 BOOL WINAPI WTSave(HCTX hCtx, LPVOID lpSaveInfo)
 656 {
 657     FIXME("(%p, %p): stub\n", hCtx, lpSaveInfo);
 658
 659     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 660
 661     return FALSE;
 662 }
 663
 664 /***********************************************************************
 665  *              WTRestore (WINTAB32.66)
 666  */
 667 HCTX WINAPI WTRestore(HWND hWnd, LPVOID lpSaveInfo, BOOL fEnable)
 668 {
 669     FIXME("(%p, %p, %u): stub\n", hWnd, lpSaveInfo, fEnable);
 670
 671     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 672
 673     return 0;
 674 }
 675
 676 /***********************************************************************
 677  *              WTPacketsPeek (WINTAB32.80)
 678  */
 679 int WINAPI WTPacketsPeek(HCTX hCtx, int cMaxPkts, LPVOID lpPkts)
 680 {
 681     int limit;
 682     LPOPENCONTEXT context;
 683     LPVOID ptr = lpPkts;
 684
 685     TRACE("(%p, %d, %p)\n", hCtx, cMaxPkts, lpPkts);
 686
 687     if (!hCtx || !lpPkts) return 0;
 688
 689     EnterCriticalSection(&csTablet);
 690
 691     context = TABLET_FindOpenContext(hCtx);
 692
 693     if (context->PacketsQueued == 0)
 694     {
 695         LeaveCriticalSection(&csTablet);
 696         return 0;
 697     }
 698
 699     for (limit = 0; limit < cMaxPkts && limit < context->PacketsQueued; limit++)
 700         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[limit]);
 701
 702     LeaveCriticalSection(&csTablet);
 703     TRACE("Copied %i packets\n",limit);
 704     return limit;
 705 }
 706
 707 /***********************************************************************
 708  *              WTDataGet (WINTAB32.81)
 709  */
 710 int WINAPI WTDataGet(HCTX hCtx, UINT wBegin, UINT wEnd,
 711                      int cMaxPkts, LPVOID lpPkts, LPINT lpNPkts)
 712 {
 713     LPOPENCONTEXT context;
 714     LPVOID ptr = lpPkts;
 715     UINT bgn = 0;
 716     UINT end = 0;
 717     UINT num = 0;
 718
 719     TRACE("(%p, %u, %u, %d, %p, %p)\n",
 720           hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts);
 721
 722     if (!hCtx) return 0;
 723
 724     EnterCriticalSection(&csTablet);
 725
 726     context = TABLET_FindOpenContext(hCtx);
 727
 728     if (context->PacketsQueued == 0)
 729     {
 730         LeaveCriticalSection(&csTablet);
 731         return 0;
 732     }
 733
 734     while (bgn < context->PacketsQueued &&
 735            context->PacketQueue[bgn].pkSerialNumber != wBegin)
 736         bgn++;
 737
 738     end = bgn;
 739     while (end < context->PacketsQueued &&
 740            context->PacketQueue[end].pkSerialNumber != wEnd)
 741         end++;
 742
 743     if (bgn == end == context->PacketsQueued)
 744     {
 745         LeaveCriticalSection(&csTablet);
 746         return 0;
 747     }
 748
 749     for (num = bgn; num <= end; num++)
 750         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[end]);
 751
 752     /* remove read packets */
 753     if ((end+1) < context->PacketsQueued)
 754         memcpy( &context->PacketQueue[bgn], &context->PacketQueue[end+1],
 755                 (context->PacketsQueued - ((end-bgn)+1)) * sizeof (WTPACKET));
 756
 757     context->PacketsQueued -= ((end-bgn)+1);
 758     *lpNPkts = ((end-bgn)+1);
 759
 760     LeaveCriticalSection(&csTablet);
 761     TRACE("Copied %i packets\n",*lpNPkts);
 762     return (end - bgn)+1;
 763 }
 764
 765 /***********************************************************************
 766  *              WTDataPeek (WINTAB32.82)
 767  */
 768 int WINAPI WTDataPeek(HCTX hCtx, UINT wBegin, UINT wEnd,
 769                       int cMaxPkts, LPVOID lpPkts, LPINT lpNPkts)
 770 {
 771     LPOPENCONTEXT context;
 772     LPVOID ptr = lpPkts;
 773     UINT bgn = 0;
 774     UINT end = 0;
 775     UINT num = 0;
 776
 777     TRACE("(%p, %u, %u, %d, %p, %p)\n",
 778           hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts);
 779
 780     if (!hCtx) return 0;
 781
 782     EnterCriticalSection(&csTablet);
 783
 784     context = TABLET_FindOpenContext(hCtx);
 785
 786     if (context->PacketsQueued == 0)
 787     {
 788         LeaveCriticalSection(&csTablet);
 789         return 0;
 790     }
 791
 792     while (bgn < context->PacketsQueued &&
 793            context->PacketQueue[bgn].pkSerialNumber != wBegin)
 794         bgn++;
 795
 796     end = bgn;
 797     while (end < context->PacketsQueued &&
 798            context->PacketQueue[end].pkSerialNumber != wEnd)
 799         end++;
 800
 801     if (bgn == context->PacketsQueued ||  end == context->PacketsQueued)
 802     {
 803         TRACE("%i %i %i \n", bgn, end, context->PacketsQueued);
 804         LeaveCriticalSection(&csTablet);
 805         return 0;
 806     }
 807
 808     for (num = bgn; num <= end; num++)
 809         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[end]);
 810
 811     *lpNPkts = ((end-bgn)+1);
 812     LeaveCriticalSection(&csTablet);
 813
 814     TRACE("Copied %i packets\n",*lpNPkts);
 815     return (end - bgn)+1;
 816 }
 817
 818 /***********************************************************************
 819  *              WTQueuePacketsEx (WINTAB32.200)
 820  */
 821 BOOL WINAPI WTQueuePacketsEx(HCTX hCtx, UINT *lpOld, UINT *lpNew)
 822 {
 823     LPOPENCONTEXT context;
 824
 825     TRACE("(%p, %p, %p)\n", hCtx, lpOld, lpNew);
 826
 827     if (!hCtx) return 0;
 828
 829     EnterCriticalSection(&csTablet);
 830
 831     context = TABLET_FindOpenContext(hCtx);
 832
 833     if (context->PacketsQueued)
 834     {
 835         *lpOld = context->PacketQueue[0].pkSerialNumber;
 836         *lpNew = context->PacketQueue[context->PacketsQueued-1].pkSerialNumber;
 837     }
 838     else
 839     {
 840         TRACE("No packets\n");
 841         LeaveCriticalSection(&csTablet);
 842         return FALSE;
 843     }
 844     LeaveCriticalSection(&csTablet);
 845
 846     return TRUE;
 847 }
 848
 849 /***********************************************************************
 850  *              WTQueueSizeGet (WINTAB32.84)
 851  */
 852 int WINAPI WTQueueSizeGet(HCTX hCtx)
 853 {
 854     LPOPENCONTEXT context;
 855     TRACE("(%p)\n", hCtx);
 856
 857     if (!hCtx) return 0;
 858
 859     EnterCriticalSection(&csTablet);
 860     context = TABLET_FindOpenContext(hCtx);
 861     LeaveCriticalSection(&csTablet);
 862     return context->QueueSize;
 863 }
 864
 865 /***********************************************************************
 866  *              WTQueueSizeSet (WINTAB32.85)
 867  */
 868 BOOL WINAPI WTQueueSizeSet(HCTX hCtx, int nPkts)
 869 {
 870     LPOPENCONTEXT context;
 871
 872     TRACE("(%p, %d)\n", hCtx, nPkts);
 873
 874     if (!hCtx) return 0;
 875
 876     EnterCriticalSection(&csTablet);
 877
 878     context = TABLET_FindOpenContext(hCtx);
 879
 880     context->PacketQueue = HeapReAlloc(GetProcessHeap(), 0,
 881                         context->PacketQueue, sizeof(WTPACKET)*nPkts);
 882
 883     context->QueueSize = nPkts;
 884     LeaveCriticalSection(&csTablet);
 885
 886     return nPkts;
 887 }