misc/clipboard.c

   1 /*
   2  * 'Wine' Clipboard function handling
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  *           1996 Alex Korobka
   6  *
   7  */
   8
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11 #include <sys/types.h>
  12 #include <sys/stat.h>
  13 #include <fcntl.h>
  14 #include <unistd.h>
  15 #include <string.h>
  16 #include <X11/Xlib.h>
  17 #include <X11/Xatom.h>
  18 #include "windows.h"
  19 #include "win.h"
  20 #include "message.h"
  21 #include "clipboard.h"
  22 #include "xmalloc.h"
  23 #include "stddebug.h"
  24 #include "debug.h"
  25
  26 #define  CF_REGFORMATBASE       0xC000
  27
  28 typedef struct tagCLIPFORMAT {
  29     WORD        wFormatID;
  30     WORD        wRefCount;
  31     WORD        wDataPresent;
  32     LPSTR       Name;
  33     HANDLE16    hData;
  34     DWORD       BufSize;
  35     struct tagCLIPFORMAT *PrevFormat;
  36     struct tagCLIPFORMAT *NextFormat;
  37 } CLIPFORMAT, *LPCLIPFORMAT;
  38
  39 /* *************************************************************************
  40  *                      internal variables
  41  */
  42
  43 static HWND hWndClipOwner  = 0;         /* current clipboard owner */
  44 static HWND hWndClipWindow = 0;         /* window that opened clipboard */
  45 static HWND hWndViewer     = 0;         /* start of viewers chain */
  46
  47 static BOOL bClipChanged  = FALSE;
  48 static WORD LastRegFormat = CF_REGFORMATBASE;
  49
  50 static Bool   selectionWait = False;
  51 static Bool   selectionAcquired = False;
  52 static Window selectionWindow = None;
  53 static Window selectionPrevWindow = None;
  54
  55 static CLIPFORMAT ClipFormats[16]  = {
  56     { CF_TEXT, 1, 0, "Text", (HANDLE16)NULL, 0, NULL, &ClipFormats[1] },
  57     { CF_BITMAP, 1, 0, "Bitmap", (HANDLE16)NULL, 0, &ClipFormats[0], &ClipFormats[2] },
  58     { CF_METAFILEPICT, 1, 0, "MetaFile Picture", (HANDLE16)NULL, 0, &ClipFormats[1], &ClipFormats[3] },
  59     { CF_SYLK, 1, 0, "Sylk", (HANDLE16)NULL, 0, &ClipFormats[2], &ClipFormats[4] },
  60     { CF_DIF, 1, 0, "DIF", (HANDLE16)NULL, 0, &ClipFormats[3], &ClipFormats[5] },
  61     { CF_TIFF, 1, 0, "TIFF", (HANDLE16)NULL, 0, &ClipFormats[4], &ClipFormats[6] },
  62     { CF_OEMTEXT, 1, 0, "OEM Text", (HANDLE16)NULL, 0, &ClipFormats[5], &ClipFormats[7] },
  63     { CF_DIB, 1, 0, "DIB", (HANDLE16)NULL, 0, &ClipFormats[6], &ClipFormats[8] },
  64     { CF_PALETTE, 1, 0, "Palette", (HANDLE16)NULL, 0, &ClipFormats[7], &ClipFormats[9] },
  65     { CF_PENDATA, 1, 0, "PenData", (HANDLE16)NULL, 0, &ClipFormats[8], &ClipFormats[10] },
  66     { CF_RIFF, 1, 0, "RIFF", (HANDLE16)NULL, 0, &ClipFormats[9], &ClipFormats[11] },
  67     { CF_WAVE, 1, 0, "Wave", (HANDLE16)NULL, 0, &ClipFormats[10], &ClipFormats[12] },
  68     { CF_OWNERDISPLAY, 1, 0, "Owner Display", (HANDLE16)NULL, 0, &ClipFormats[11], &ClipFormats[13] },
  69     { CF_DSPTEXT, 1, 0, "DSPText", (HANDLE16)NULL, 0, &ClipFormats[12], &ClipFormats[14] },
  70     { CF_DSPMETAFILEPICT, 1, 0, "DSPMetaFile Picture", (HANDLE16)NULL, 0, &ClipFormats[13], &ClipFormats[15] },
  71     { CF_DSPBITMAP, 1, 0, "DSPBitmap", (HANDLE16)NULL, 0, &ClipFormats[14], NULL }
  72     };
  73
  74 /**************************************************************************
  75  *                      CLIPBOARD_CheckSelection
  76  */
  77 void CLIPBOARD_CheckSelection(WND* pWnd)
  78 {
  79   dprintf_clipboard(stddeb,"\tchecking %08x\n", (unsigned)pWnd->window);
  80
  81   if( selectionAcquired && selectionWindow != None &&
  82       pWnd->window == selectionWindow )
  83   {
  84     selectionPrevWindow = selectionWindow;
  85     selectionWindow = None;
  86
  87     if( pWnd->next )
  88          selectionWindow = pWnd->next->window;
  89     else if( pWnd->parent )
  90              if( pWnd->parent->child != pWnd )
  91                  selectionWindow = pWnd->parent->child->window;
  92
  93     dprintf_clipboard(stddeb,"\tswitching selection from %08x to %08x\n",
  94                     (unsigned)selectionPrevWindow, (unsigned)selectionWindow);
  95
  96     if( selectionWindow != None )
  97     {
  98         XSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
  99         if( XGetSelectionOwner(display, XA_PRIMARY) != selectionWindow )
 100             selectionWindow = None;
 101     }
 102   }
 103 }
 104
 105 /**************************************************************************
 106  *                      CLIPBOARD_DisOwn
 107  *
 108  * Called from DestroyWindow().
 109  */
 110 void CLIPBOARD_DisOwn(WND* pWnd)
 111 {
 112   LPCLIPFORMAT lpFormat = ClipFormats;
 113
 114   dprintf_clipboard(stddeb,"DisOwn: clipboard owner = %04x, sw = %08x\n",
 115                                 hWndClipOwner, (unsigned)selectionWindow);
 116
 117   if( pWnd->hwndSelf == hWndClipOwner)
 118   {
 119     SendMessage16(hWndClipOwner,WM_RENDERALLFORMATS,0,0L);
 120
 121     /* check if all formats were rendered */
 122
 123     while(lpFormat)
 124     {
 125        if( lpFormat->wDataPresent && !lpFormat->hData )
 126          {
 127            dprintf_clipboard(stddeb,"\tdata missing for clipboard format %i\n", lpFormat->wFormatID);
 128            lpFormat->wDataPresent = 0;
 129          }
 130        lpFormat = lpFormat->NextFormat;
 131     }
 132     hWndClipOwner = 0;
 133   }
 134
 135   /* now try to salvage current selection from being destroyed by X */
 136
 137   CLIPBOARD_CheckSelection(pWnd);
 138 }
 139
 140 /**************************************************************************
 141  *                      CLIPBOARD_DeleteRecord
 142  */
 143 void CLIPBOARD_DeleteRecord(LPCLIPFORMAT lpFormat)
 144 {
 145   if( lpFormat->wFormatID >= CF_GDIOBJFIRST &&
 146       lpFormat->wFormatID <= CF_GDIOBJLAST )
 147       DeleteObject(lpFormat->hData);
 148   else if( lpFormat->hData )
 149            GlobalFree16(lpFormat->hData);
 150
 151   lpFormat->wDataPresent = 0;
 152   lpFormat->hData = 0;
 153
 154   bClipChanged = TRUE;
 155 }
 156
 157 /**************************************************************************
 158  *                      CLIPBOARD_RequestXSelection
 159  */
 160 BOOL CLIPBOARD_RequestXSelection()
 161 {
 162   HWND hWnd = (hWndClipWindow) ? hWndClipWindow : GetActiveWindow();
 163
 164   if( !hWnd ) return FALSE;
 165
 166   dprintf_clipboard(stddeb,"Requesting selection...\n");
 167
 168   /* request data type XA_STRING, later
 169    * CLIPBOARD_ReadSelection() will be invoked
 170    * from the SelectionNotify event handler */
 171
 172   XConvertSelection(display,XA_PRIMARY,XA_STRING,
 173                     XInternAtom(display,"PRIMARY_TEXT",False),
 174                     WIN_GetXWindow(hWnd),CurrentTime);
 175
 176   /* wait until SelectionNotify is processed */
 177
 178   selectionWait=True;
 179   while(selectionWait)
 180         EVENT_WaitXEvent( TRUE, FALSE );
 181
 182   /* we treat Unix text as CF_OEMTEXT */
 183   dprintf_clipboard(stddeb,"\tgot CF_OEMTEXT = %i\n",
 184                     ClipFormats[CF_OEMTEXT-1].wDataPresent);
 185
 186   return (BOOL)ClipFormats[CF_OEMTEXT-1].wDataPresent;
 187 }
 188
 189 /**************************************************************************
 190  *                      CLIPBOARD_IsPresent
 191  */
 192 BOOL CLIPBOARD_IsPresent(WORD wFormat)
 193 {
 194     LPCLIPFORMAT lpFormat = ClipFormats;
 195
 196     /* special case */
 197
 198     if( wFormat == CF_TEXT || wFormat == CF_OEMTEXT )
 199         return lpFormat[CF_TEXT-1].wDataPresent |
 200                lpFormat[CF_OEMTEXT-1].wDataPresent;
 201
 202     while(TRUE) {
 203         if (lpFormat == NULL) return FALSE;
 204         if (lpFormat->wFormatID == wFormat) break;
 205         lpFormat = lpFormat->NextFormat;
 206         }
 207
 208     return (lpFormat->wDataPresent);
 209 }
 210
 211 /**************************************************************************
 212  *                      OpenClipboard           [USER.137]
 213  */
 214 BOOL OpenClipboard(HWND hWnd)
 215 {
 216     BOOL bRet = FALSE;
 217     dprintf_clipboard(stddeb,"OpenClipboard(%04x) = ", hWnd);
 218
 219     if (!hWndClipWindow)
 220        {
 221          hWndClipWindow = hWnd;
 222          bRet = TRUE;
 223        }
 224     bClipChanged = FALSE;
 225
 226     dprintf_clipboard(stddeb,"%i\n", bRet);
 227     return bRet;
 228 }
 229
 230
 231 /**************************************************************************
 232  *                      CloseClipboard          [USER.138]
 233  */
 234 BOOL CloseClipboard()
 235 {
 236     dprintf_clipboard(stddeb,"CloseClipboard(); !\n");
 237
 238     if (hWndClipWindow == 0) return FALSE;
 239     hWndClipWindow = 0;
 240
 241     if (bClipChanged && hWndViewer) SendMessage16(hWndViewer,WM_DRAWCLIPBOARD,0,0L);
 242
 243     return TRUE;
 244 }
 245
 246
 247 /**************************************************************************
 248  *                      EmptyClipboard          [USER.139]
 249  */
 250 BOOL EmptyClipboard()
 251 {
 252     LPCLIPFORMAT lpFormat = ClipFormats;
 253
 254     dprintf_clipboard(stddeb,"EmptyClipboard()\n");
 255
 256     if (hWndClipWindow == 0) return FALSE;
 257
 258     /* destroy private objects */
 259
 260     if (hWndClipOwner)
 261         SendMessage16(hWndClipOwner,WM_DESTROYCLIPBOARD,0,0L);
 262
 263     while(lpFormat)
 264       {
 265         if ( lpFormat->wDataPresent || lpFormat->hData )
 266              CLIPBOARD_DeleteRecord( lpFormat );
 267
 268         lpFormat = lpFormat->NextFormat;
 269       }
 270
 271     hWndClipOwner = hWndClipWindow;
 272
 273     if(selectionAcquired)
 274     {
 275         selectionAcquired       = False;
 276         selectionPrevWindow     = selectionWindow;
 277         selectionWindow         = None;
 278
 279         dprintf_clipboard(stddeb, "\tgiving up selection (spw = %08x)\n",
 280                                         (unsigned)selectionPrevWindow);
 281
 282         XSetSelectionOwner(display,XA_PRIMARY,None,CurrentTime);
 283     }
 284     return TRUE;
 285 }
 286
 287
 288 /**************************************************************************
 289  *                      GetClipboardOwner       [USER.140]
 290  */
 291 HWND GetClipboardOwner()
 292 {
 293     dprintf_clipboard(stddeb,
 294                 "GetClipboardOwner() = %04x !\n", hWndClipOwner);
 295     return hWndClipOwner;
 296 }
 297
 298
 299 /**************************************************************************
 300  *                      SetClipboardData        [USER.141]
 301  */
 302 HANDLE SetClipboardData(WORD wFormat, HANDLE hData)
 303 {
 304     LPCLIPFORMAT lpFormat = ClipFormats;
 305     Window       owner;
 306
 307     dprintf_clipboard(stddeb,
 308                 "SetClipboardData(%04X, %04x) !\n", wFormat, hData);
 309
 310     while(TRUE)
 311       {
 312         if (lpFormat == NULL) return 0;
 313         if (lpFormat->wFormatID == wFormat) break;
 314         lpFormat = lpFormat->NextFormat;
 315       }
 316
 317     /* Acquire X selection if text format */
 318
 319     if( !selectionAcquired &&
 320         (wFormat == CF_TEXT || wFormat == CF_OEMTEXT) )
 321     {
 322       owner = WIN_GetXWindow(hWndClipWindow);
 323       XSetSelectionOwner(display,XA_PRIMARY,owner,CurrentTime);
 324       if( XGetSelectionOwner(display,XA_PRIMARY) == owner )
 325       {
 326         selectionAcquired = True;
 327         selectionWindow = owner;
 328
 329         dprintf_clipboard(stddeb,"Grabbed X selection, owner=(%08x)\n",
 330                                                 (unsigned) owner);
 331       }
 332     }
 333
 334     if ( lpFormat->wDataPresent || lpFormat->hData )
 335     {
 336         CLIPBOARD_DeleteRecord(lpFormat);
 337
 338         /* delete existing CF_TEXT/CF_OEMTEXT aliases */
 339
 340         if( wFormat == CF_TEXT && ClipFormats[CF_OEMTEXT-1].hData
 341             && !ClipFormats[CF_OEMTEXT-1].wDataPresent )
 342             CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1]);
 343         if( wFormat == CF_OEMTEXT && ClipFormats[CF_TEXT-1].hData
 344             && !ClipFormats[CF_TEXT-1].wDataPresent )
 345             CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1]);
 346     }
 347
 348     bClipChanged = TRUE;
 349     lpFormat->wDataPresent = 1;
 350     lpFormat->hData = hData;          /* 0 is legal, see WM_RENDERFORMAT */
 351
 352     return lpFormat->hData;
 353 }
 354
 355 /**************************************************************************
 356  *                      CLIPBOARD_RenderFormat
 357  */
 358 BOOL32 CLIPBOARD_RenderFormat(LPCLIPFORMAT lpFormat)
 359 {
 360  if( lpFormat->wDataPresent && !lpFormat->hData )
 361    if( IsWindow(hWndClipOwner) )
 362        SendMessage16(hWndClipOwner,WM_RENDERFORMAT,(WPARAM)lpFormat->wFormatID,0L);
 363    else
 364    {
 365        dprintf_clipboard(stddeb,"\thWndClipOwner (%04x) is lost!\n",
 366                                       hWndClipOwner);
 367        hWndClipOwner = 0; lpFormat->wDataPresent = 0;
 368        return FALSE;
 369    }
 370  return (lpFormat->hData) ? TRUE : FALSE;
 371 }
 372
 373 /**************************************************************************
 374  *                      CLIPBOARD_RenderText
 375  */
 376 BOOL32 CLIPBOARD_RenderText(LPCLIPFORMAT lpTarget, LPCLIPFORMAT lpSource)
 377 {
 378   UINT          size = GlobalSize16( lpSource->hData );
 379   LPCSTR        lpstrS = (LPSTR)GlobalLock16(lpSource->hData);
 380   LPSTR         lpstrT;
 381
 382   if( !lpstrS ) return FALSE;
 383   dprintf_clipboard(stddeb,"\tconverting from '%s' to '%s', %i chars\n",
 384                                       lpSource->Name, lpTarget->Name, size);
 385
 386   lpTarget->hData = GlobalAlloc16(GMEM_ZEROINIT, size);
 387   lpstrT = (LPSTR)GlobalLock16(lpTarget->hData);
 388
 389   if( lpstrT )
 390   {
 391     if( lpSource->wFormatID == CF_TEXT )
 392         AnsiToOemBuff(lpstrS, lpstrT, size);
 393     else
 394         OemToAnsiBuff(lpstrS, lpstrT, size);
 395     dprintf_clipboard(stddeb,"\tgot %s\n", lpstrT);
 396     return TRUE;
 397   }
 398
 399   lpTarget->hData = 0;
 400   return FALSE;
 401 }
 402
 403 /**************************************************************************
 404  *                      GetClipboardData        [USER.142]
 405  */
 406 HANDLE GetClipboardData(WORD wFormat)
 407 {
 408     LPCLIPFORMAT lpRender = ClipFormats;
 409     LPCLIPFORMAT lpUpdate = NULL;
 410
 411     if (!hWndClipWindow) return 0;
 412
 413     dprintf_clipboard(stddeb,"GetClipboardData(%04X)\n", wFormat);
 414
 415     if( wFormat == CF_TEXT && !lpRender[CF_TEXT-1].wDataPresent
 416                            &&  lpRender[CF_OEMTEXT-1].wDataPresent )
 417     {
 418         lpRender = &ClipFormats[CF_OEMTEXT-1];
 419         lpUpdate = &ClipFormats[CF_TEXT-1];
 420
 421         dprintf_clipboard(stddeb,"\tOEMTEXT -> TEXT\n");
 422     }
 423     else if( wFormat == CF_OEMTEXT && !lpRender[CF_OEMTEXT-1].wDataPresent
 424                                    &&  lpRender[CF_TEXT-1].wDataPresent )
 425     {
 426         lpRender = &ClipFormats[CF_TEXT-1];
 427         lpUpdate = &ClipFormats[CF_OEMTEXT-1];
 428
 429         dprintf_clipboard(stddeb,"\tTEXT -> OEMTEXT\n");
 430     }
 431     else
 432     {
 433       while(TRUE)
 434       {
 435         if (lpRender == NULL) return 0;
 436         if (lpRender->wFormatID == wFormat) break;
 437         lpRender = lpRender->NextFormat;
 438       }
 439       lpUpdate = lpRender;
 440     }
 441
 442     if( !CLIPBOARD_RenderFormat(lpRender) ) return 0;
 443     if( lpUpdate != lpRender &&
 444         !lpUpdate->hData ) CLIPBOARD_RenderText(lpUpdate, lpRender);
 445
 446     dprintf_clipboard(stddeb,"\treturning %04x (type %i)\n",
 447                               lpUpdate->hData, lpUpdate->wFormatID);
 448     return lpUpdate->hData;
 449 }
 450
 451
 452 /**************************************************************************
 453  *                      CountClipboardFormats   [USER.143]
 454  */
 455 INT CountClipboardFormats()
 456 {
 457     int          FormatCount = 0;
 458     LPCLIPFORMAT lpFormat = ClipFormats;
 459
 460     dprintf_clipboard(stddeb,"CountClipboardFormats()\n");
 461
 462     if( !selectionAcquired ) CLIPBOARD_RequestXSelection();
 463
 464     FormatCount += abs(lpFormat[CF_TEXT-1].wDataPresent -
 465                        lpFormat[CF_OEMTEXT-1].wDataPresent);
 466
 467     while(TRUE) {
 468         if (lpFormat == NULL) break;
 469         if (lpFormat->wDataPresent)
 470             {
 471                dprintf_clipboard(stddeb, "\tdata found for format %i\n", lpFormat->wFormatID);
 472
 473                FormatCount++;
 474             }
 475         lpFormat = lpFormat->NextFormat;
 476         }
 477
 478     dprintf_clipboard(stddeb,"\ttotal %d\n", FormatCount);
 479     return FormatCount;
 480 }
 481
 482
 483 /**************************************************************************
 484  *                      EnumClipboardFormats    [USER.144]
 485  */
 486 UINT16 EnumClipboardFormats(UINT16 wFormat)
 487 {
 488     LPCLIPFORMAT lpFormat = ClipFormats;
 489
 490     dprintf_clipboard(stddeb,"EnumClipboardFormats(%04X)\n", wFormat);
 491
 492     if( !hWndClipWindow ) return 0;
 493
 494     if( (!wFormat || wFormat == CF_TEXT || wFormat == CF_OEMTEXT)
 495          && !selectionAcquired) CLIPBOARD_RequestXSelection();
 496
 497     if (wFormat == 0)
 498         if (lpFormat->wDataPresent || ClipFormats[CF_OEMTEXT-1].wDataPresent)
 499             return lpFormat->wFormatID;
 500         else
 501             wFormat = lpFormat->wFormatID; /* and CF_TEXT is not available */
 502
 503     /* walk up to the specified format record */
 504
 505     while(TRUE) {
 506         if (lpFormat == NULL) return 0;
 507         if (lpFormat->wFormatID == wFormat) break;
 508         lpFormat = lpFormat->NextFormat;
 509         }
 510
 511     /* find next format with available data */
 512
 513     lpFormat = lpFormat->NextFormat;
 514     while(TRUE) {
 515         if (lpFormat == NULL) return 0;
 516         if (lpFormat->wDataPresent ||
 517                (lpFormat->wFormatID == CF_OEMTEXT &&
 518                 ClipFormats[CF_TEXT-1].wDataPresent)) break;
 519         lpFormat = lpFormat->NextFormat;
 520         }
 521
 522     return lpFormat->wFormatID;
 523 }
 524
 525
 526 /**************************************************************************
 527  *                      RegisterClipboardFormat [USER.145]
 528  */
 529 WORD RegisterClipboardFormat(LPCSTR FormatName)
 530 {
 531     LPCLIPFORMAT lpNewFormat;
 532     LPCLIPFORMAT lpFormat = ClipFormats;
 533
 534     if (FormatName == NULL) return 0;
 535
 536     dprintf_clipboard(stddeb,"RegisterClipboardFormat('%s') !\n", FormatName);
 537
 538     /* walk format chain to see if it's already registered */
 539
 540     while(TRUE) {
 541         if ( !strcmp(lpFormat->Name,FormatName) )
 542            {
 543              lpFormat->wRefCount++;
 544              return lpFormat->wFormatID;
 545            }
 546
 547         if ( lpFormat->NextFormat == NULL ) break;
 548
 549         lpFormat = lpFormat->NextFormat;
 550         }
 551
 552     /* allocate storage for new format entry */
 553
 554     lpNewFormat = (LPCLIPFORMAT)xmalloc(sizeof(CLIPFORMAT));
 555     lpFormat->NextFormat = lpNewFormat;
 556     lpNewFormat->wFormatID = LastRegFormat;
 557     lpNewFormat->wRefCount = 1;
 558
 559     lpNewFormat->Name = (LPSTR)xmalloc(strlen(FormatName) + 1);
 560     strcpy(lpNewFormat->Name, FormatName);
 561
 562     lpNewFormat->wDataPresent = 0;
 563     lpNewFormat->hData = 0;
 564     lpNewFormat->BufSize = 0;
 565     lpNewFormat->PrevFormat = lpFormat;
 566     lpNewFormat->NextFormat = NULL;
 567
 568     return LastRegFormat++;
 569 }
 570
 571
 572 /**************************************************************************
 573  *                      GetClipboardFormatName  [USER.146]
 574  */
 575 int GetClipboardFormatName(WORD wFormat, LPSTR retStr, short maxlen)
 576 {
 577     LPCLIPFORMAT lpFormat = ClipFormats;
 578
 579     dprintf_clipboard(stddeb,
 580         "GetClipboardFormat(%04X, %p, %d) !\n", wFormat, retStr, maxlen);
 581
 582     while(TRUE) {
 583         if (lpFormat == NULL) return 0;
 584         if (lpFormat->wFormatID == wFormat) break;
 585         lpFormat = lpFormat->NextFormat;
 586         }
 587
 588     if (lpFormat->Name == NULL ||
 589         lpFormat->wFormatID < CF_REGFORMATBASE) return 0;
 590
 591     dprintf_clipboard(stddeb,
 592                 "GetClipboardFormat // Name='%s' !\n", lpFormat->Name);
 593
 594     strncpy(retStr, lpFormat->Name, maxlen - 1);
 595     retStr[maxlen] = 0;
 596
 597     return strlen(retStr);
 598 }
 599
 600
 601 /**************************************************************************
 602  *                      SetClipboardViewer      [USER.147]
 603  */
 604 HWND SetClipboardViewer(HWND hWnd)
 605 {
 606     HWND hwndPrev = hWndViewer;
 607
 608     dprintf_clipboard(stddeb,"SetClipboardViewer(%04x)\n", hWnd);
 609
 610     hWndViewer = hWnd;
 611     return hwndPrev;
 612 }
 613
 614
 615 /**************************************************************************
 616  *                      GetClipboardViewer      [USER.148]
 617  */
 618 HWND GetClipboardViewer()
 619 {
 620     dprintf_clipboard(stddeb,"GetClipboardFormat() = %04x\n", hWndViewer);
 621
 622     return hWndViewer;
 623 }
 624
 625
 626 /**************************************************************************
 627  *                      ChangeClipboardChain    [USER.149]
 628  */
 629 BOOL ChangeClipboardChain(HWND hWnd, HWND hWndNext)
 630 {
 631     BOOL bRet = 0;
 632
 633     dprintf_clipboard(stdnimp, "ChangeClipboardChain(%04x, %04x)\n", hWnd, hWndNext);
 634
 635     if( hWndViewer )
 636       bRet = !SendMessage16( hWndViewer, WM_CHANGECBCHAIN, (WPARAM)hWnd, (LPARAM)hWndNext);
 637     else
 638       dprintf_clipboard(stddeb,"ChangeClipboardChain: hWndViewer is lost\n");
 639
 640     if( hWnd == hWndViewer ) hWndViewer = hWndNext;
 641
 642     return 0;
 643 }
 644
 645
 646 /**************************************************************************
 647  *                      IsClipboardFormatAvailable      [USER.193]
 648  */
 649 BOOL IsClipboardFormatAvailable(WORD wFormat)
 650 {
 651     dprintf_clipboard(stddeb,"IsClipboardFormatAvailable(%04X) !\n", wFormat);
 652
 653     if( (wFormat == CF_TEXT || wFormat == CF_OEMTEXT) &&
 654         !selectionAcquired ) CLIPBOARD_RequestXSelection();
 655
 656     return CLIPBOARD_IsPresent(wFormat);
 657 }
 658
 659
 660 /**************************************************************************
 661  *                      GetOpenClipboardWindow  [USER.248]
 662  */
 663 HWND GetOpenClipboardWindow()
 664 {
 665     dprintf_clipboard(stddeb,
 666                 "GetOpenClipboardWindow() = %04x\n", hWndClipWindow);
 667     return hWndClipWindow;
 668 }
 669
 670
 671 /**************************************************************************
 672  *                      GetPriorityClipboardFormat      [USER.402]
 673  */
 674 int GetPriorityClipboardFormat(WORD *lpPriorityList, short nCount)
 675 {
 676     dprintf_clipboard(stdnimp,
 677         "GetPriorityClipboardFormat(%p, %d) !\n", lpPriorityList, nCount);
 678
 679     return 0;
 680 }
 681
 682
 683 /**************************************************************************
 684  *                      CLIPBOARD_ReadSelection
 685  *
 686  * Called from the SelectionNotify event handler.
 687  */
 688 void CLIPBOARD_ReadSelection(Window w,Atom prop)
 689 {
 690     HANDLE16     hText = 0;
 691     LPCLIPFORMAT lpFormat = ClipFormats;
 692
 693     dprintf_clipboard(stddeb,"ReadSelection callback\n");
 694
 695     if(prop != None)
 696     {
 697         Atom            atype=AnyPropertyType;
 698         int             aformat;
 699         unsigned long   nitems,remain;
 700         unsigned char*  val=NULL;
 701
 702         dprintf_clipboard(stddeb,"\tgot property %s\n",XGetAtomName(display,prop));
 703
 704         /* TODO: Properties longer than 64K */
 705
 706         if(XGetWindowProperty(display,w,prop,0,0x3FFF,True,XA_STRING,
 707             &atype, &aformat, &nitems, &remain, &val) != Success)
 708             dprintf_clipboard(stddeb,"\tcouldn't read property\n");
 709         else
 710         {
 711            dprintf_clipboard(stddeb,"\tType %s,Format %d,nitems %ld,value %s\n",
 712                              XGetAtomName(display,atype),aformat,nitems,val);
 713
 714            if(atype == XA_STRING && aformat == 8)
 715            {
 716               int       i,inlcount = 0;
 717               char*     lpstr;
 718
 719               dprintf_clipboard(stddeb,"\tselection is '%s'\n",val);
 720
 721               for(i=0; i <= nitems; i++)
 722                   if( val[i] == '\n' ) inlcount++;
 723
 724               if( nitems )
 725               {
 726                 hText=GlobalAlloc16(GMEM_MOVEABLE, nitems + inlcount + 1);
 727                 if( (lpstr = (char*)GlobalLock16(hText)) )
 728                   for(i=0,inlcount=0; i <= nitems; i++)
 729                   {
 730                      if( val[i] == '\n' ) lpstr[inlcount++]='\r';
 731                      lpstr[inlcount++]=val[i];
 732                   }
 733                 else hText = 0;
 734               }
 735            }
 736            XFree(val);
 737         }
 738    }
 739
 740    /* delete previous CF_TEXT and CF_OEMTEXT data */
 741
 742    if( hText )
 743    {
 744      lpFormat = &ClipFormats[CF_TEXT-1];
 745      if (lpFormat->wDataPresent || lpFormat->hData)
 746          CLIPBOARD_DeleteRecord(lpFormat);
 747      lpFormat = &ClipFormats[CF_OEMTEXT-1];
 748      if (lpFormat->wDataPresent || lpFormat->hData)
 749          CLIPBOARD_DeleteRecord(lpFormat);
 750
 751      lpFormat->wDataPresent = 1;
 752      lpFormat->hData = hText;
 753    }
 754
 755    selectionWait=False;
 756 }
 757
 758 /**************************************************************************
 759  *                      CLIPBOARD_ReleaseSelection
 760  *
 761  * Wine might have lost XA_PRIMARY selection because of
 762  * EmptyClipboard() or other client.
 763  */
 764 void CLIPBOARD_ReleaseSelection(Window w, HWND hwnd)
 765 {
 766   /* w is the window that lost selection,
 767    *
 768    * selectionPrevWindow is nonzero if CheckSelection() was called.
 769    */
 770
 771   dprintf_clipboard(stddeb,"\tevent->window = %08x (sw = %08x, spw=%08x)\n",
 772           (unsigned)w, (unsigned)selectionWindow, (unsigned)selectionPrevWindow );
 773
 774   if( selectionAcquired )
 775     if( w == selectionWindow || selectionPrevWindow == None)
 776     {
 777       /* alright, we really lost it */
 778
 779       selectionAcquired = False;
 780       selectionWindow = None;
 781
 782       /* but we'll keep existing data for internal use */
 783     }
 784     else if( w == selectionPrevWindow )
 785     {
 786       w =  XGetSelectionOwner(display, XA_PRIMARY);
 787
 788       if( w == None )
 789         XSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
 790     }
 791
 792   selectionPrevWindow = None;
 793 }
 794