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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "winerror.h"
  28 #include "winbase.h"
  29 #include "winuser.h"
  30 #include "winnls.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 LPOPENCONTEXT gOpenContexts;
  45 static HCTX gTopContext = (HCTX)0xc00;
  46
  47 static void LOGCONTEXTAtoW(const LOGCONTEXTA *in, LOGCONTEXTW *out)
  48 {
  49     MultiByteToWideChar(CP_ACP, 0, in->lcName, -1, out->lcName, LCNAMELEN);
  50     out->lcName[LCNAMELEN - 1] = 0;
  51     /* we use the fact that the fields after lcName are the same in LOGCONTEXTA and W */
  52     memcpy(&out->lcOptions, &in->lcOptions, sizeof(LOGCONTEXTA) - FIELD_OFFSET(LOGCONTEXTA, lcOptions));
  53 }
  54
  55 static void LOGCONTEXTWtoA(const LOGCONTEXTW *in, LOGCONTEXTA *out)
  56 {
  57     WideCharToMultiByte(CP_ACP, 0, in->lcName, LCNAMELEN, out->lcName, LCNAMELEN, NULL, NULL);
  58     out->lcName[LCNAMELEN - 1] = 0;
  59     /* we use the fact that the fields after lcName are the same in LOGCONTEXTA and W */
  60     memcpy(&out->lcOptions, &in->lcOptions, sizeof(LOGCONTEXTW) - FIELD_OFFSET(LOGCONTEXTW, lcOptions));
  61 }
  62
  63 static BOOL is_logcontext_category(UINT wCategory)
  64 {
  65     return wCategory == WTI_DEFSYSCTX || wCategory == WTI_DEFCONTEXT || wCategory == WTI_DDCTXS;
  66 }
  67
  68 static BOOL is_string_field(UINT wCategory, UINT nIndex)
  69 {
  70     if (wCategory == WTI_INTERFACE && nIndex == IFC_WINTABID)
  71         return TRUE;
  72     if (is_logcontext_category(wCategory) && nIndex == CTX_NAME)
  73         return TRUE;
  74     if ((wCategory >= WTI_CURSORS && wCategory <= WTI_CURSORS + 9) &&
  75             (nIndex == CSR_NAME || nIndex == CSR_BTNNAMES))
  76         return TRUE;
  77     if (wCategory == WTI_DEVICES && (nIndex == DVC_NAME || nIndex == DVC_PNPID))
  78         return TRUE;
  79     return FALSE;
  80 }
  81
  82 static const char* DUMPBITS(int x)
  83 {
  84     char buf[200];
  85     buf[0] = 0;
  86     if (x&PK_CONTEXT) strcat(buf,"PK_CONTEXT ");
  87     if (x&PK_STATUS) strcat(buf, "PK_STATUS ");
  88     if (x&PK_TIME) strcat(buf, "PK_TIME ");
  89     if (x&PK_CHANGED) strcat(buf, "PK_CHANGED ");
  90     if (x&PK_SERIAL_NUMBER) strcat(buf, "PK_SERIAL_NUMBER ");
  91     if (x&PK_CURSOR) strcat(buf, "PK_CURSOR ");
  92     if (x&PK_BUTTONS) strcat(buf, "PK_BUTTONS ");
  93     if (x&PK_X) strcat(buf, "PK_X ");
  94     if (x&PK_Y) strcat(buf, "PK_Y ");
  95     if (x&PK_Z) strcat(buf, "PK_Z ");
  96     if (x&PK_NORMAL_PRESSURE) strcat(buf, "PK_NORMAL_PRESSURE ");
  97     if (x&PK_TANGENT_PRESSURE) strcat(buf, "PK_TANGENT_PRESSURE ");
  98     if (x&PK_ORIENTATION) strcat(buf, "PK_ORIENTATION ");
  99     if (x&PK_ROTATION) strcat(buf, "PK_ROTATION ");
 100     return wine_dbg_sprintf("{%s}",buf);
 101 }
 102
 103 static inline void DUMPPACKET(WTPACKET packet)
 104 {
 105     TRACE("pkContext: %p pkStatus: 0x%x pkTime : 0x%x pkChanged: 0x%x pkSerialNumber: 0x%x pkCursor : %i pkButtons: %x pkX: %i pkY: %i pkZ: %i pkNormalPressure: %i pkTangentPressure: %i pkOrientation: (%i,%i,%i) pkRotation: (%i,%i,%i)\n",
 106           packet.pkContext, packet.pkStatus, packet.pkTime, packet.pkChanged, packet.pkSerialNumber,
 107           packet.pkCursor, packet.pkButtons, packet.pkX, packet.pkY, packet.pkZ,
 108           packet.pkNormalPressure, packet.pkTangentPressure,
 109           packet.pkOrientation.orAzimuth, packet.pkOrientation.orAltitude, packet.pkOrientation.orTwist,
 110           packet.pkRotation.roPitch, packet.pkRotation.roRoll, packet.pkRotation.roYaw);
 111 }
 112
 113 static inline void DUMPCONTEXT(LOGCONTEXTW lc)
 114 {
 115     TRACE("Name: %s, Options: %x, Status: %x, Locks: %x, MsgBase: %x, Device: %x\n",
 116             wine_dbgstr_w(lc.lcName), lc.lcOptions, lc.lcStatus, lc.lcLocks, lc.lcMsgBase, lc.lcDevice);
 117     TRACE("PktRate %x\n", lc.lcPktRate);
 118     TRACE("PktData 0x%04x %s\n", lc.lcPktData, DUMPBITS(lc.lcPktData));
 119     TRACE("PktMode 0x%04x %s\n", lc.lcPktMode, DUMPBITS(lc.lcPktMode));
 120     TRACE("MovMask 0x%04x %s\n", lc.lcMoveMask, DUMPBITS(lc.lcMoveMask));
 121     TRACE("BtnDnMask: %x, BtnUpMask: %x\n", lc.lcBtnDnMask, lc.lcBtnUpMask);
 122     TRACE("InOrgX: %i, InOrgY: %i, InOrgZ: %i\n", lc.lcInOrgX, lc.lcInOrgY, lc.lcInOrgZ);
 123     TRACE("InExtX: %i, InExtY: %i, InExtZ: %i\n", lc.lcInExtX, lc.lcInExtY, lc.lcInExtZ);
 124     TRACE("OutOrgX: %i, OutOrgY: %i, OutOrgZ: %i\n", lc.lcOutOrgX, lc.lcOutOrgY, lc.lcOutOrgZ);
 125     TRACE("OutExtX: %i, OutExtY: %i, OutExtZ: %i\n", lc.lcOutExtX, lc.lcOutExtY, lc.lcOutExtZ);
 126     TRACE("SensX: %i, SensY: %i, SensZ: %i\n", lc.lcSensX, lc.lcSensY, lc.lcSensZ);
 127     TRACE("SysMode: %i\n", lc.lcSysMode);
 128     TRACE("SysOrgX: %i, SysOrgY: %i\n", lc.lcSysOrgX, lc.lcSysOrgY);
 129     TRACE("SysExtX: %i, SysExtY: %i\n", lc.lcSysExtX, lc.lcSysExtY);
 130     TRACE("SysSensX: %i, SysSensY: %i\n", lc.lcSysSensX, lc.lcSysSensY);
 131 }
 132
 133
 134 /* Find an open context given the handle */
 135 static LPOPENCONTEXT TABLET_FindOpenContext(HCTX hCtx)
 136 {
 137     LPOPENCONTEXT ptr = gOpenContexts;
 138     while (ptr)
 139     {
 140         if (ptr->handle == hCtx) return ptr;
 141         ptr = ptr->next;
 142     }
 143     return NULL;
 144 }
 145
 146 static inline BOOL LoadTablet(void)
 147 {
 148     static enum {TI_START = 0, TI_OK, TI_FAIL} loaded = TI_START;
 149
 150     if (loaded == TI_START)
 151     {
 152         if (pLoadTabletInfo && pLoadTabletInfo(hwndDefault))
 153         {
 154             TRACE("Initialized the tablet to hwnd %p\n", hwndDefault);
 155             loaded = TI_OK;
 156         }
 157         else
 158         {
 159             TRACE("Failed to initialize the tablet to hwnd %p\n", hwndDefault);
 160             loaded = TI_FAIL;
 161         }
 162     }
 163
 164     return loaded == TI_OK;
 165 }
 166
 167 int TABLET_PostTabletMessage(LPOPENCONTEXT newcontext, UINT msg, WPARAM wParam,
 168                              LPARAM lParam, BOOL send_always)
 169 {
 170     if ((send_always) || (newcontext->context.lcOptions & CXO_MESSAGES))
 171     {
 172         TRACE("Posting message %x to %p\n",msg, newcontext->hwndOwner);
 173         return PostMessageA(newcontext->hwndOwner, msg, wParam, lParam);
 174     }
 175     return 0;
 176 }
 177
 178 static inline DWORD ScaleForContext(DWORD In, LONG InOrg, LONG InExt, LONG OutOrg, LONG OutExt)
 179 {
 180     if (((InExt > 0 )&&(OutExt > 0)) || ((InExt<0) && (OutExt < 0)))
 181         return MulDiv(In - InOrg, abs(OutExt), abs(InExt)) + OutOrg;
 182     else
 183         return MulDiv(abs(InExt) - (In - InOrg), abs(OutExt), abs(InExt)) + OutOrg;
 184 }
 185
 186 LPOPENCONTEXT AddPacketToContextQueue(LPWTPACKET packet, HWND hwnd)
 187 {
 188     LPOPENCONTEXT ptr=NULL;
 189
 190     EnterCriticalSection(&csTablet);
 191
 192     ptr = gOpenContexts;
 193     while (ptr)
 194     {
 195         TRACE("Trying Queue %p (%p %p)\n", ptr->handle, hwnd, ptr->hwndOwner);
 196
 197         if (ptr->hwndOwner == hwnd)
 198         {
 199             int tgt;
 200             if (!ptr->enabled)
 201             {
 202                 ptr = ptr->next;
 203                 continue;
 204             }
 205
 206             tgt = ptr->PacketsQueued;
 207
 208             packet->pkContext = ptr->handle;
 209
 210             /* translate packet data to the context */
 211             packet->pkChanged = packet->pkChanged & ptr->context.lcPktData;
 212
 213             /* Scale  as per documentation */
 214             packet->pkY = ScaleForContext(packet->pkY, ptr->context.lcInOrgY,
 215                                 ptr->context.lcInExtY, ptr->context.lcOutOrgY,
 216                                 ptr->context.lcOutExtY);
 217
 218             packet->pkX = ScaleForContext(packet->pkX, ptr->context.lcInOrgX,
 219                                 ptr->context.lcInExtX, ptr->context.lcOutOrgX,
 220                                 ptr->context.lcOutExtX);
 221
 222             /* flip the Y axis */
 223             if (ptr->context.lcOutExtY > 0)
 224                 packet->pkY = ptr->context.lcOutExtY - packet->pkY;
 225             else if (ptr->context.lcOutExtY < 0)
 226             {
 227                 int y = ptr->context.lcOutExtY + packet->pkY;
 228                 packet->pkY = abs(y);
 229             }
 230
 231             DUMPPACKET(*packet);
 232
 233             if (tgt == ptr->QueueSize)
 234             {
 235                 TRACE("Queue Overflow %p\n",ptr->handle);
 236                 ptr->PacketQueue[tgt-1].pkStatus |= TPS_QUEUE_ERR;
 237             }
 238             else
 239             {
 240                 TRACE("Placed in queue %p index %i\n",ptr->handle,tgt);
 241                 ptr->PacketQueue[tgt] = *packet;
 242                 ptr->PacketsQueued++;
 243
 244                 if (ptr->ActiveCursor != packet->pkCursor)
 245                 {
 246                     ptr->ActiveCursor = packet->pkCursor;
 247                     if (ptr->context.lcOptions & CXO_CSRMESSAGES)
 248                         TABLET_PostTabletMessage(ptr, _WT_CSRCHANGE(ptr->context.lcMsgBase),
 249                           (WPARAM)packet->pkSerialNumber, (LPARAM)ptr->handle,
 250                             FALSE);
 251                 }
 252             }
 253             break;
 254          }
 255         ptr = ptr->next;
 256     }
 257     LeaveCriticalSection(&csTablet);
 258     TRACE("Done (%p)\n",ptr);
 259     return ptr;
 260 }
 261
 262 /*
 263  * Flushes all packets from the queue.
 264  */
 265 static inline void TABLET_FlushQueue(LPOPENCONTEXT context)
 266 {
 267     context->PacketsQueued = 0;
 268 }
 269
 270 static inline int CopyTabletData(LPVOID target, LPVOID src, INT size)
 271 {
 272     memcpy(target,src,size);
 273     return(size);
 274 }
 275
 276 static INT TABLET_FindPacket(LPOPENCONTEXT context, UINT wSerial,
 277                                 LPWTPACKET *pkt)
 278 {
 279     int loop;
 280     int index  = -1;
 281     for (loop = 0; loop < context->PacketsQueued; loop++)
 282         if (context->PacketQueue[loop].pkSerialNumber == wSerial)
 283         {
 284             index = loop;
 285             *pkt = &context->PacketQueue[loop];
 286             break;
 287         }
 288
 289     TRACE("%i .. %i\n",context->PacketsQueued,index);
 290
 291     return index;
 292 }
 293
 294
 295 static LPVOID TABLET_CopyPacketData(LPOPENCONTEXT context, LPVOID lpPkt,
 296                                     LPWTPACKET wtp)
 297 {
 298     LPBYTE ptr;
 299
 300     ptr = lpPkt;
 301     TRACE("Packet Bits %s\n",DUMPBITS(context->context.lcPktData));
 302
 303     if (context->context.lcPktData & PK_CONTEXT)
 304         ptr+=CopyTabletData(ptr,&wtp->pkContext,sizeof(HCTX));
 305     if (context->context.lcPktData & PK_STATUS)
 306         ptr+=CopyTabletData(ptr,&wtp->pkStatus,sizeof(UINT));
 307     if (context->context.lcPktData & PK_TIME)
 308         ptr+=CopyTabletData(ptr,&wtp->pkTime,sizeof(LONG));
 309     if (context->context.lcPktData & PK_CHANGED)
 310         ptr+=CopyTabletData(ptr,&wtp->pkChanged,sizeof(WTPKT));
 311     if (context->context.lcPktData & PK_SERIAL_NUMBER)
 312         ptr+=CopyTabletData(ptr,&wtp->pkSerialNumber,sizeof(UINT));
 313     if (context->context.lcPktData & PK_CURSOR)
 314         ptr+=CopyTabletData(ptr,&wtp->pkCursor,sizeof(UINT));
 315     if (context->context.lcPktData & PK_BUTTONS)
 316         ptr+=CopyTabletData(ptr,&wtp->pkButtons,sizeof(DWORD));
 317     if (context->context.lcPktData & PK_X)
 318         ptr+=CopyTabletData(ptr,&wtp->pkX,sizeof(DWORD));
 319     if (context->context.lcPktData & PK_Y)
 320         ptr+=CopyTabletData(ptr,&wtp->pkY,sizeof(DWORD));
 321     if (context->context.lcPktData & PK_Z)
 322         ptr+=CopyTabletData(ptr,&wtp->pkZ,sizeof(DWORD));
 323     if (context->context.lcPktData & PK_NORMAL_PRESSURE)
 324         ptr+=CopyTabletData(ptr,&wtp->pkNormalPressure,sizeof(UINT));
 325     if (context->context.lcPktData & PK_TANGENT_PRESSURE)
 326         ptr+=CopyTabletData(ptr,&wtp->pkTangentPressure,sizeof(UINT));
 327     if (context->context.lcPktData & PK_ORIENTATION)
 328         ptr+=CopyTabletData(ptr,&wtp->pkOrientation,sizeof(ORIENTATION));
 329     if (context->context.lcPktData & PK_ROTATION)
 330         ptr+=CopyTabletData(ptr,&wtp->pkRotation,sizeof(ROTATION));
 331
 332     /*TRACE("Copied %i bytes\n",(INT)ptr - (INT)lpPkt); */
 333     return ptr;
 334 }
 335
 336 static VOID TABLET_BlankPacketData(LPOPENCONTEXT context, LPVOID lpPkt, INT n)
 337 {
 338     int rc = 0;
 339
 340     if (context->context.lcPktData & PK_CONTEXT)
 341         rc +=sizeof(HCTX);
 342     if (context->context.lcPktData & PK_STATUS)
 343         rc +=sizeof(UINT);
 344     if (context->context.lcPktData & PK_TIME)
 345         rc += sizeof(LONG);
 346     if (context->context.lcPktData & PK_CHANGED)
 347         rc += sizeof(WTPKT);
 348     if (context->context.lcPktData & PK_SERIAL_NUMBER)
 349         rc += sizeof(UINT);
 350     if (context->context.lcPktData & PK_CURSOR)
 351         rc += sizeof(UINT);
 352     if (context->context.lcPktData & PK_BUTTONS)
 353         rc += sizeof(DWORD);
 354     if (context->context.lcPktData & PK_X)
 355         rc += sizeof(DWORD);
 356     if (context->context.lcPktData & PK_Y)
 357         rc += sizeof(DWORD);
 358     if (context->context.lcPktData & PK_Z)
 359         rc += sizeof(DWORD);
 360     if (context->context.lcPktData & PK_NORMAL_PRESSURE)
 361         rc += sizeof(UINT);
 362     if (context->context.lcPktData & PK_TANGENT_PRESSURE)
 363         rc += sizeof(UINT);
 364     if (context->context.lcPktData & PK_ORIENTATION)
 365         rc += sizeof(ORIENTATION);
 366     if (context->context.lcPktData & PK_ROTATION)
 367         rc += sizeof(ROTATION);
 368
 369     rc *= n;
 370     memset(lpPkt,0,rc);
 371 }
 372
 373
 374 static UINT WTInfoT(UINT wCategory, UINT nIndex, LPVOID lpOutput, BOOL bUnicode)
 375 {
 376     UINT result;
 377
 378     if (!LoadTablet()) return 0;
 379
 380     TRACE("(%d, %d, %p, %d)\n", wCategory, nIndex, lpOutput, bUnicode);
 381
 382     /*
 383      *  Handle system extents here, as we can use user32.dll code to set them.
 384      */
 385     if(wCategory == WTI_DEFSYSCTX)
 386     {
 387         switch(nIndex)
 388         {
 389             case CTX_SYSEXTX:
 390                 if(lpOutput != NULL)
 391                     *(LONG*)lpOutput = GetSystemMetrics(SM_CXSCREEN);
 392                 return sizeof(LONG);
 393             case CTX_SYSEXTY:
 394                 if(lpOutput != NULL)
 395                     *(LONG*)lpOutput = GetSystemMetrics(SM_CYSCREEN);
 396                 return sizeof(LONG);
 397            /* No action, delegate to X11Drv */
 398         }
 399     }
 400
 401     if (is_logcontext_category(wCategory) && nIndex == 0)
 402     {
 403         if (lpOutput)
 404         {
 405             LOGCONTEXTW buf;
 406             pWTInfoW(wCategory, nIndex, &buf);
 407
 408             /*  Handle system extents here, as we can use user32.dll code to set them */
 409             if(wCategory == WTI_DEFSYSCTX)
 410             {
 411                 buf.lcSysExtX = GetSystemMetrics(SM_CXSCREEN);
 412                 buf.lcSysExtY = GetSystemMetrics(SM_CYSCREEN);
 413             }
 414
 415             if (bUnicode)
 416                 memcpy(lpOutput, &buf, sizeof(buf));
 417             else
 418                 LOGCONTEXTWtoA(&buf, lpOutput);
 419         }
 420
 421         result = bUnicode ? sizeof(LOGCONTEXTW) : sizeof(LOGCONTEXTA);
 422     }
 423     else if (is_string_field(wCategory, nIndex) && !bUnicode)
 424     {
 425         int size = pWTInfoW(wCategory, nIndex, NULL);
 426         WCHAR *buf = HeapAlloc(GetProcessHeap(), 0, size);
 427         pWTInfoW(wCategory, nIndex, buf);
 428         result = WideCharToMultiByte(CP_ACP, 0, buf, size/sizeof(WCHAR), lpOutput, lpOutput ? 2*size : 0, NULL, NULL);
 429         HeapFree(GetProcessHeap(), 0, buf);
 430     }
 431     else
 432         result =  pWTInfoW(wCategory, nIndex, lpOutput);
 433
 434     TRACE("returns %d\n", result);
 435     return result;
 436 }
 437
 438 /***********************************************************************
 439  *              WTInfoA (WINTAB32.20)
 440  */
 441 UINT WINAPI WTInfoA(UINT wCategory, UINT nIndex, LPVOID lpOutput)
 442 {
 443     return WTInfoT(wCategory, nIndex, lpOutput, FALSE);
 444 }
 445
 446
 447 /***********************************************************************
 448  *              WTInfoW (WINTAB32.1020)
 449  */
 450 UINT WINAPI WTInfoW(UINT wCategory, UINT nIndex, LPVOID lpOutput)
 451 {
 452     return WTInfoT(wCategory, nIndex, lpOutput, TRUE);
 453 }
 454
 455 /***********************************************************************
 456  *              WTOpenW (WINTAB32.1021)
 457  */
 458 HCTX WINAPI WTOpenW(HWND hWnd, LPLOGCONTEXTW lpLogCtx, BOOL fEnable)
 459 {
 460     LPOPENCONTEXT newcontext;
 461
 462     if (!LoadTablet()) return 0;
 463
 464     TRACE("hWnd=%p, lpLogCtx=%p, fEnable=%u\n", hWnd, lpLogCtx, fEnable);
 465     DUMPCONTEXT(*lpLogCtx);
 466
 467     newcontext = HeapAlloc(GetProcessHeap(), 0 , sizeof(OPENCONTEXT));
 468     newcontext->context = *lpLogCtx;
 469     newcontext->hwndOwner = hWnd;
 470     newcontext->ActiveCursor = -1;
 471     newcontext->QueueSize = 10;
 472     newcontext->PacketsQueued = 0;
 473     newcontext->PacketQueue=HeapAlloc(GetProcessHeap(),0,sizeof(WTPACKET)*10);
 474
 475     EnterCriticalSection(&csTablet);
 476     newcontext->handle = gTopContext++;
 477     newcontext->next = gOpenContexts;
 478     gOpenContexts = newcontext;
 479     LeaveCriticalSection(&csTablet);
 480
 481     pAttachEventQueueToTablet(hWnd);
 482
 483     TABLET_PostTabletMessage(newcontext, _WT_CTXOPEN(newcontext->context.lcMsgBase), (WPARAM)newcontext->handle,
 484                       newcontext->context.lcStatus, TRUE);
 485
 486     if (fEnable)
 487     {
 488         newcontext->enabled = TRUE;
 489         /* TODO: Add to top of overlap order */
 490         newcontext->context.lcStatus = CXS_ONTOP;
 491     }
 492     else
 493     {
 494         newcontext->enabled = FALSE;
 495         newcontext->context.lcStatus = CXS_DISABLED;
 496     }
 497
 498     TABLET_PostTabletMessage(newcontext, _WT_CTXOVERLAP(newcontext->context.lcMsgBase),
 499                             (WPARAM)newcontext->handle,
 500                             newcontext->context.lcStatus, TRUE);
 501
 502     return newcontext->handle;
 503 }
 504
 505 /***********************************************************************
 506  *              WTOpenA (WINTAB32.21)
 507  */
 508 HCTX WINAPI WTOpenA(HWND hWnd, LPLOGCONTEXTA lpLogCtx, BOOL fEnable)
 509 {
 510     LOGCONTEXTW logCtxW;
 511
 512     LOGCONTEXTAtoW(lpLogCtx, &logCtxW);
 513     return WTOpenW(hWnd, &logCtxW, fEnable);
 514 }
 515
 516 /***********************************************************************
 517  *              WTClose (WINTAB32.22)
 518  */
 519 BOOL WINAPI WTClose(HCTX hCtx)
 520 {
 521     LPOPENCONTEXT context,ptr;
 522
 523     TRACE("(%p)\n", hCtx);
 524
 525     EnterCriticalSection(&csTablet);
 526
 527     ptr = context = gOpenContexts;
 528
 529     while (context && (context->handle != hCtx))
 530     {
 531         ptr = context;
 532         context = context->next;
 533     }
 534     if (!context)
 535     {
 536         LeaveCriticalSection(&csTablet);
 537         return TRUE;
 538     }
 539
 540     if (context == gOpenContexts)
 541         gOpenContexts = context->next;
 542     else
 543         ptr->next = context->next;
 544
 545     LeaveCriticalSection(&csTablet);
 546
 547     TABLET_PostTabletMessage(context, _WT_CTXCLOSE(context->context.lcMsgBase), (WPARAM)context->handle,
 548                       context->context.lcStatus,TRUE);
 549
 550     HeapFree(GetProcessHeap(),0,context->PacketQueue);
 551     HeapFree(GetProcessHeap(),0,context);
 552
 553     return TRUE;
 554 }
 555
 556 /***********************************************************************
 557  *              WTPacketsGet (WINTAB32.23)
 558  */
 559 int WINAPI WTPacketsGet(HCTX hCtx, int cMaxPkts, LPVOID lpPkts)
 560 {
 561     int limit;
 562     LPOPENCONTEXT context;
 563     LPVOID ptr = lpPkts;
 564
 565     TRACE("(%p, %d, %p)\n", hCtx, cMaxPkts, lpPkts);
 566
 567     if (!hCtx)
 568         return 0;
 569
 570     EnterCriticalSection(&csTablet);
 571
 572     context = TABLET_FindOpenContext(hCtx);
 573     if (!context)
 574     {
 575         LeaveCriticalSection(&csTablet);
 576         return 0;
 577     }
 578
 579     if (lpPkts != NULL)
 580         TABLET_BlankPacketData(context,lpPkts,cMaxPkts);
 581
 582     if (context->PacketsQueued == 0)
 583     {
 584         LeaveCriticalSection(&csTablet);
 585         return 0;
 586     }
 587
 588     limit = min(cMaxPkts,context->PacketsQueued);
 589
 590     if(ptr != NULL)
 591     {
 592         int i = 0;
 593         for(i = 0; i < limit; i++)
 594             ptr=TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[i]);
 595     }
 596
 597
 598     if (limit < context->PacketsQueued)
 599     {
 600         memmove(context->PacketQueue, &context->PacketQueue[limit],
 601             (context->PacketsQueued - (limit))*sizeof(WTPACKET));
 602     }
 603     context->PacketsQueued -= limit;
 604     LeaveCriticalSection(&csTablet);
 605
 606     TRACE("Copied %i packets\n",limit);
 607
 608     return limit;
 609 }
 610
 611 /***********************************************************************
 612  *              WTPacket (WINTAB32.24)
 613  */
 614 BOOL WINAPI WTPacket(HCTX hCtx, UINT wSerial, LPVOID lpPkt)
 615 {
 616     int rc = 0;
 617     LPOPENCONTEXT context;
 618     LPWTPACKET wtp = NULL;
 619
 620     TRACE("(%p, %d, %p)\n", hCtx, wSerial, lpPkt);
 621
 622     if (!hCtx)
 623         return FALSE;
 624
 625     EnterCriticalSection(&csTablet);
 626
 627     context = TABLET_FindOpenContext(hCtx);
 628     if (!context)
 629     {
 630         LeaveCriticalSection(&csTablet);
 631         return FALSE;
 632     }
 633
 634     rc = TABLET_FindPacket(context ,wSerial, &wtp);
 635
 636     if (rc >= 0)
 637     {
 638         if (lpPkt)
 639            TABLET_CopyPacketData(context ,lpPkt, wtp);
 640
 641         if ((rc+1) < context->QueueSize)
 642         {
 643             memmove(context->PacketQueue, &context->PacketQueue[rc+1],
 644                 (context->PacketsQueued - (rc+1))*sizeof(WTPACKET));
 645         }
 646         context->PacketsQueued -= (rc+1);
 647     }
 648     LeaveCriticalSection(&csTablet);
 649
 650     TRACE("Returning %i\n",rc+1);
 651     return rc+1;
 652 }
 653
 654 /***********************************************************************
 655  *              WTEnable (WINTAB32.40)
 656  */
 657 BOOL WINAPI WTEnable(HCTX hCtx, BOOL fEnable)
 658 {
 659     LPOPENCONTEXT context;
 660
 661     TRACE("hCtx=%p, fEnable=%u\n", hCtx, fEnable);
 662
 663     if (!hCtx) return FALSE;
 664
 665     EnterCriticalSection(&csTablet);
 666     context = TABLET_FindOpenContext(hCtx);
 667     if (!context)
 668     {
 669         LeaveCriticalSection(&csTablet);
 670         return FALSE;
 671     }
 672
 673     /* if we want to enable and it is not enabled then */
 674     if(fEnable && !context->enabled)
 675     {
 676         context->enabled = TRUE;
 677         /* TODO: Add to top of overlap order */
 678         context->context.lcStatus = CXS_ONTOP;
 679         TABLET_PostTabletMessage(context,
 680             _WT_CTXOVERLAP(context->context.lcMsgBase),
 681             (WPARAM)context->handle,
 682             context->context.lcStatus, TRUE);
 683     }
 684     /* if we want to disable and it is not disabled then */
 685     else if (!fEnable && context->enabled)
 686     {
 687         context->enabled = FALSE;
 688         /* TODO: Remove from overlap order?? needs a test */
 689         context->context.lcStatus = CXS_DISABLED;
 690         TABLET_FlushQueue(context);
 691         TABLET_PostTabletMessage(context,
 692             _WT_CTXOVERLAP(context->context.lcMsgBase),
 693             (WPARAM)context->handle,
 694             context->context.lcStatus, TRUE);
 695     }
 696     LeaveCriticalSection(&csTablet);
 697
 698     return TRUE;
 699 }
 700
 701 /***********************************************************************
 702  *              WTOverlap (WINTAB32.41)
 703  *
 704  *              Move context to top or bottom of overlap order
 705  */
 706 BOOL WINAPI WTOverlap(HCTX hCtx, BOOL fToTop)
 707 {
 708     LPOPENCONTEXT context;
 709
 710     TRACE("hCtx=%p, fToTop=%u\n", hCtx, fToTop);
 711
 712     if (!hCtx) return FALSE;
 713
 714     EnterCriticalSection(&csTablet);
 715     context = TABLET_FindOpenContext(hCtx);
 716     if (!context)
 717     {
 718         LeaveCriticalSection(&csTablet);
 719         return FALSE;
 720     }
 721
 722     /* if we want to send to top and it's not already there */
 723     if (fToTop && context->context.lcStatus != CXS_ONTOP)
 724     {
 725         /* TODO: Move context to top of overlap order */
 726         FIXME("Not moving context to top of overlap order\n");
 727         context->context.lcStatus = CXS_ONTOP;
 728         TABLET_PostTabletMessage(context,
 729             _WT_CTXOVERLAP(context->context.lcMsgBase),
 730             (WPARAM)context->handle,
 731             context->context.lcStatus, TRUE);
 732     }
 733     else if (!fToTop)
 734     {
 735         /* TODO: Move context to bottom of overlap order */
 736         FIXME("Not moving context to bottom of overlap order\n");
 737         context->context.lcStatus = CXS_OBSCURED;
 738         TABLET_PostTabletMessage(context,
 739             _WT_CTXOVERLAP(context->context.lcMsgBase),
 740             (WPARAM)context->handle,
 741             context->context.lcStatus, TRUE);
 742     }
 743     LeaveCriticalSection(&csTablet);
 744
 745     return TRUE;
 746 }
 747
 748 /***********************************************************************
 749  *              WTConfig (WINTAB32.60)
 750  */
 751 BOOL WINAPI WTConfig(HCTX hCtx, HWND hWnd)
 752 {
 753     FIXME("(%p, %p): stub\n", hCtx, hWnd);
 754
 755     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 756
 757     return FALSE;
 758 }
 759
 760 /***********************************************************************
 761  *              WTGetA (WINTAB32.61)
 762  */
 763 BOOL WINAPI WTGetA(HCTX hCtx, LPLOGCONTEXTA lpLogCtx)
 764 {
 765     LPOPENCONTEXT context;
 766
 767     TRACE("(%p, %p)\n", hCtx, lpLogCtx);
 768
 769     if (!hCtx) return FALSE;
 770
 771     EnterCriticalSection(&csTablet);
 772     context = TABLET_FindOpenContext(hCtx);
 773     if (!context)
 774     {
 775         LeaveCriticalSection(&csTablet);
 776         return FALSE;
 777     }
 778
 779     LOGCONTEXTWtoA(&context->context, lpLogCtx);
 780     LeaveCriticalSection(&csTablet);
 781
 782     return TRUE;
 783 }
 784
 785 /***********************************************************************
 786  *              WTGetW (WINTAB32.1061)
 787  */
 788 BOOL WINAPI WTGetW(HCTX hCtx, LPLOGCONTEXTW lpLogCtx)
 789 {
 790     LPOPENCONTEXT context;
 791
 792     TRACE("(%p, %p)\n", hCtx, lpLogCtx);
 793
 794     if (!hCtx) return FALSE;
 795
 796     EnterCriticalSection(&csTablet);
 797     context = TABLET_FindOpenContext(hCtx);
 798     if (!context)
 799     {
 800         LeaveCriticalSection(&csTablet);
 801         return FALSE;
 802     }
 803
 804     memmove(lpLogCtx,&context->context,sizeof(LOGCONTEXTW));
 805     LeaveCriticalSection(&csTablet);
 806
 807     return TRUE;
 808 }
 809
 810 /***********************************************************************
 811  *              WTSetA (WINTAB32.62)
 812  */
 813 BOOL WINAPI WTSetA(HCTX hCtx, LPLOGCONTEXTA lpLogCtx)
 814 {
 815     LPOPENCONTEXT context;
 816
 817     TRACE("hCtx=%p, lpLogCtx=%p\n", hCtx, lpLogCtx);
 818
 819     if (!hCtx || !lpLogCtx) return FALSE;
 820
 821     /* TODO: if cur process not owner of hCtx only modify
 822      * attribs not locked by owner */
 823
 824     EnterCriticalSection(&csTablet);
 825     context = TABLET_FindOpenContext(hCtx);
 826     if (!context)
 827     {
 828         LeaveCriticalSection(&csTablet);
 829         return FALSE;
 830     }
 831
 832     LOGCONTEXTAtoW(lpLogCtx, &context->context);
 833     LeaveCriticalSection(&csTablet);
 834
 835     return TRUE;
 836 }
 837
 838 /***********************************************************************
 839  *              WTSetW (WINTAB32.1062)
 840  */
 841 BOOL WINAPI WTSetW(HCTX hCtx, LPLOGCONTEXTW lpLogCtx)
 842 {
 843     LPOPENCONTEXT context;
 844
 845     TRACE("hCtx=%p, lpLogCtx=%p\n", hCtx, lpLogCtx);
 846
 847     if (!hCtx || !lpLogCtx) return FALSE;
 848
 849     /* TODO: if cur process not hCtx owner only modify
 850      * attribs not locked by owner */
 851
 852     EnterCriticalSection(&csTablet);
 853     context = TABLET_FindOpenContext(hCtx);
 854     if (!context)
 855     {
 856         LeaveCriticalSection(&csTablet);
 857         return FALSE;
 858     }
 859
 860     memmove(&context->context, lpLogCtx, sizeof(LOGCONTEXTW));
 861     LeaveCriticalSection(&csTablet);
 862
 863     return TRUE;
 864 }
 865
 866 /***********************************************************************
 867  *              WTExtGet (WINTAB32.63)
 868  */
 869 BOOL WINAPI WTExtGet(HCTX hCtx, UINT wExt, LPVOID lpData)
 870 {
 871     FIXME("(%p, %u, %p): stub\n", hCtx, wExt, lpData);
 872
 873     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 874
 875     return FALSE;
 876 }
 877
 878 /***********************************************************************
 879  *              WTExtSet (WINTAB32.64)
 880  */
 881 BOOL WINAPI WTExtSet(HCTX hCtx, UINT wExt, LPVOID lpData)
 882 {
 883     FIXME("(%p, %u, %p): stub\n", hCtx, wExt, lpData);
 884
 885     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 886
 887     return FALSE;
 888 }
 889
 890 /***********************************************************************
 891  *              WTSave (WINTAB32.65)
 892  */
 893 BOOL WINAPI WTSave(HCTX hCtx, LPVOID lpSaveInfo)
 894 {
 895     FIXME("(%p, %p): stub\n", hCtx, lpSaveInfo);
 896
 897     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 898
 899     return FALSE;
 900 }
 901
 902 /***********************************************************************
 903  *              WTRestore (WINTAB32.66)
 904  */
 905 HCTX WINAPI WTRestore(HWND hWnd, LPVOID lpSaveInfo, BOOL fEnable)
 906 {
 907     FIXME("(%p, %p, %u): stub\n", hWnd, lpSaveInfo, fEnable);
 908
 909     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 910
 911     return 0;
 912 }
 913
 914 /***********************************************************************
 915  *              WTPacketsPeek (WINTAB32.80)
 916  */
 917 int WINAPI WTPacketsPeek(HCTX hCtx, int cMaxPkts, LPVOID lpPkts)
 918 {
 919     int limit;
 920     LPOPENCONTEXT context;
 921     LPVOID ptr = lpPkts;
 922
 923     TRACE("(%p, %d, %p)\n", hCtx, cMaxPkts, lpPkts);
 924
 925     if (!hCtx || !lpPkts) return 0;
 926
 927     EnterCriticalSection(&csTablet);
 928
 929     context = TABLET_FindOpenContext(hCtx);
 930
 931     if (!context || context->PacketsQueued == 0)
 932     {
 933         LeaveCriticalSection(&csTablet);
 934         return 0;
 935     }
 936
 937     for (limit = 0; limit < cMaxPkts && limit < context->PacketsQueued; limit++)
 938         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[limit]);
 939
 940     LeaveCriticalSection(&csTablet);
 941     TRACE("Copied %i packets\n",limit);
 942     return limit;
 943 }
 944
 945 /***********************************************************************
 946  *              WTDataGet (WINTAB32.81)
 947  */
 948 int WINAPI WTDataGet(HCTX hCtx, UINT wBegin, UINT wEnd,
 949                      int cMaxPkts, LPVOID lpPkts, LPINT lpNPkts)
 950 {
 951     LPOPENCONTEXT context;
 952     LPVOID ptr = lpPkts;
 953     INT bgn = 0;
 954     INT end = 0;
 955     INT num = 0;
 956
 957     TRACE("(%p, %u, %u, %d, %p, %p)\n",
 958           hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts);
 959
 960     if (!hCtx) return 0;
 961
 962     EnterCriticalSection(&csTablet);
 963
 964     context = TABLET_FindOpenContext(hCtx);
 965
 966     if (!context || context->PacketsQueued == 0)
 967     {
 968         LeaveCriticalSection(&csTablet);
 969         return 0;
 970     }
 971
 972     while (bgn < context->PacketsQueued &&
 973            context->PacketQueue[bgn].pkSerialNumber != wBegin)
 974         bgn++;
 975
 976     end = bgn;
 977     while (end < context->PacketsQueued &&
 978            context->PacketQueue[end].pkSerialNumber != wEnd)
 979         end++;
 980
 981     if ((bgn == end) && (end == context->PacketsQueued))
 982     {
 983         LeaveCriticalSection(&csTablet);
 984         return 0;
 985     }
 986
 987     for (num = bgn; num <= end; num++)
 988         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[num]);
 989
 990     /* remove read packets */
 991     if ((end+1) < context->PacketsQueued)
 992         memmove( &context->PacketQueue[bgn], &context->PacketQueue[end+1],
 993                 (context->PacketsQueued - (end+1)) * sizeof (WTPACKET));
 994
 995     context->PacketsQueued -= ((end-bgn)+1);
 996     *lpNPkts = ((end-bgn)+1);
 997
 998     LeaveCriticalSection(&csTablet);
 999     TRACE("Copied %i packets\n",*lpNPkts);
1000     return (end - bgn)+1;
1001 }
1002
1003 /***********************************************************************
1004  *              WTDataPeek (WINTAB32.82)
1005  */
1006 int WINAPI WTDataPeek(HCTX hCtx, UINT wBegin, UINT wEnd,
1007                       int cMaxPkts, LPVOID lpPkts, LPINT lpNPkts)
1008 {
1009     LPOPENCONTEXT context;
1010     LPVOID ptr = lpPkts;
1011     INT bgn = 0;
1012     INT end = 0;
1013     INT num = 0;
1014
1015     TRACE("(%p, %u, %u, %d, %p, %p)\n",
1016           hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts);
1017
1018     if (!hCtx || !lpPkts) return 0;
1019
1020     EnterCriticalSection(&csTablet);
1021
1022     context = TABLET_FindOpenContext(hCtx);
1023
1024     if (!context || context->PacketsQueued == 0)
1025     {
1026         LeaveCriticalSection(&csTablet);
1027         return 0;
1028     }
1029
1030     while (bgn < context->PacketsQueued &&
1031            context->PacketQueue[bgn].pkSerialNumber != wBegin)
1032         bgn++;
1033
1034     end = bgn;
1035     while (end < context->PacketsQueued &&
1036            context->PacketQueue[end].pkSerialNumber != wEnd)
1037         end++;
1038
1039     if (bgn == context->PacketsQueued ||  end == context->PacketsQueued)
1040     {
1041         TRACE("%i %i %i\n", bgn, end, context->PacketsQueued);
1042         LeaveCriticalSection(&csTablet);
1043         return 0;
1044     }
1045
1046     for (num = bgn; num <= end; num++)
1047         ptr = TABLET_CopyPacketData(context ,ptr, &context->PacketQueue[num]);
1048
1049     *lpNPkts = ((end-bgn)+1);
1050     LeaveCriticalSection(&csTablet);
1051
1052     TRACE("Copied %i packets\n",*lpNPkts);
1053     return (end - bgn)+1;
1054 }
1055
1056 /***********************************************************************
1057  *              WTQueuePacketsEx (WINTAB32.200)
1058  */
1059 BOOL WINAPI WTQueuePacketsEx(HCTX hCtx, UINT *lpOld, UINT *lpNew)
1060 {
1061     LPOPENCONTEXT context;
1062
1063     TRACE("(%p, %p, %p)\n", hCtx, lpOld, lpNew);
1064
1065     if (!hCtx) return FALSE;
1066
1067     EnterCriticalSection(&csTablet);
1068
1069     context = TABLET_FindOpenContext(hCtx);
1070
1071     if (context && context->PacketsQueued)
1072     {
1073         *lpOld = context->PacketQueue[0].pkSerialNumber;
1074         *lpNew = context->PacketQueue[context->PacketsQueued-1].pkSerialNumber;
1075     }
1076     else
1077     {
1078         TRACE("No packets\n");
1079         LeaveCriticalSection(&csTablet);
1080         return FALSE;
1081     }
1082     LeaveCriticalSection(&csTablet);
1083
1084     return TRUE;
1085 }
1086
1087 /***********************************************************************
1088  *              WTQueueSizeGet (WINTAB32.84)
1089  */
1090 int WINAPI WTQueueSizeGet(HCTX hCtx)
1091 {
1092     LPOPENCONTEXT context;
1093     int queueSize = 0;
1094
1095     TRACE("(%p)\n", hCtx);
1096
1097     if (!hCtx) return 0;
1098
1099     EnterCriticalSection(&csTablet);
1100     context = TABLET_FindOpenContext(hCtx);
1101     if (context)
1102         queueSize = context->QueueSize;
1103     LeaveCriticalSection(&csTablet);
1104     return queueSize;
1105 }
1106
1107 /***********************************************************************
1108  *              WTQueueSizeSet (WINTAB32.85)
1109  */
1110 BOOL WINAPI WTQueueSizeSet(HCTX hCtx, int nPkts)
1111 {
1112     LPOPENCONTEXT context;
1113
1114     TRACE("(%p, %d)\n", hCtx, nPkts);
1115
1116     if (!hCtx) return FALSE;
1117
1118     EnterCriticalSection(&csTablet);
1119
1120     context = TABLET_FindOpenContext(hCtx);
1121     if (!context)
1122     {
1123         LeaveCriticalSection(&csTablet);
1124         return FALSE;
1125     }
1126
1127     context->PacketQueue = HeapReAlloc(GetProcessHeap(), 0,
1128                         context->PacketQueue, sizeof(WTPACKET)*nPkts);
1129
1130     context->QueueSize = nPkts;
1131     LeaveCriticalSection(&csTablet);
1132
1133     return nPkts;
1134 }