dlls/user/text.c

   1 /*
   2  * USER text functions
   3  *
   4  * Copyright 1993, 1994 Alexandre Julliard
   5  *
   6  * Contains
   7  *   1.  DrawText functions
   8  *   2.  GrayString functions
   9  *   3.  TabbedText functions
  10  */
  11
  12 #include <string.h>
  13
  14 #include "windef.h"
  15 #include "wingdi.h"
  16 #include "wine/winuser16.h"
  17 #include "wine/unicode.h"
  18 #include "winbase.h"
  19 #include "winerror.h"
  20 #include "winnls.h"
  21 #include "user.h"
  22 #include "debugtools.h"
  23
  24 DEFAULT_DEBUG_CHANNEL(text);
  25
  26 #define countof(a) (sizeof(a)/sizeof(a[0]))
  27
  28 /*********************************************************************
  29  *
  30  *            DrawText functions
  31  */
  32
  33 #define TAB     9
  34 #define LF     10
  35 #define CR     13
  36 #define SPACE  32
  37 #define PREFIX 38
  38
  39 #define ELLIPSIS "..."
  40 #define FORWARD_SLASH '/'
  41 #define BACK_SLASH '\\'
  42
  43 static const WCHAR SPACEW[] = {' ', 0};
  44 static const WCHAR oW[] = {'o', 0};
  45 static const WCHAR ELLIPSISW[] = {'.','.','.', 0};
  46 static const WCHAR FORWARD_SLASHW[] = {'/', 0};
  47 static const WCHAR BACK_SLASHW[] = {'\\', 0};
  48
  49 static int tabstop;
  50 static int tabwidth;
  51 static int spacewidth;
  52 static int prefix_offset;
  53
  54
  55 /*********************************************************************
  56  *  Return next line of text from a string.
  57  *
  58  * hdc - handle to DC.
  59  * str - string to parse into lines.
  60  * count - length of str.
  61  * dest - destination in which to return line.
  62  * len - dest buffer size in chars on input, copied length into dest on output.
  63  * width - maximum width of line in pixels.
  64  * format - format type passed to DrawText.
  65  *
  66  * Returns pointer to next char in str after end of the line
  67  * or NULL if end of str reached.
  68  *
  69  * FIXME:
  70  * GetTextExtentPoint is used to get the width of each character,
  71  * rather than GetCharABCWidth...  So the whitespace between
  72  * characters is ignored, and the reported len is too great.
  73  */
  74 static const WCHAR *TEXT_NextLineW( HDC hdc, const WCHAR *str, int *count,
  75                                   WCHAR *dest, int *len, int width, WORD format)
  76 {
  77     int i = 0, j = 0, k;
  78     int plen = 0;
  79     int numspaces;
  80     SIZE size;
  81     int lasttab = 0;
  82     int wb_i = 0, wb_j = 0, wb_count = 0;
  83     int maxl = *len;
  84
  85     while (*count && j < maxl)
  86     {
  87         switch (str[i])
  88         {
  89         case CR:
  90         case LF:
  91             if (!(format & DT_SINGLELINE))
  92             {
  93                 if ((*count > 1) && (str[i] == CR) && (str[i+1] == LF))
  94                 {
  95                     (*count)--;
  96                     i++;
  97                 }
  98                 i++;
  99                 *len = j;
 100                 (*count)--;
 101                 return (&str[i]);
 102             }
 103             dest[j++] = str[i++];
 104             if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
 105                 (format & DT_WORDBREAK))
 106             {
 107                 if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
 108                     return NULL;
 109                 plen += size.cx;
 110             }
 111             break;
 112
 113         case PREFIX:
 114             if (!(format & DT_NOPREFIX) && *count > 1)
 115                 {
 116                 if (str[++i] == PREFIX)
 117                     (*count)--;
 118                 else {
 119                     prefix_offset = j;
 120                     break;
 121                 }
 122             }
 123             dest[j++] = str[i++];
 124             if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
 125                 (format & DT_WORDBREAK))
 126             {
 127                 if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
 128                     return NULL;
 129                 plen += size.cx;
 130             }
 131             break;
 132
 133         case TAB:
 134             if (format & DT_EXPANDTABS)
 135             {
 136                 wb_i = ++i;
 137                 wb_j = j;
 138                 wb_count = *count;
 139
 140                 if (!GetTextExtentPointW(hdc, &dest[lasttab], j - lasttab, &size))
 141                     return NULL;
 142
 143                 numspaces = (tabwidth - size.cx) / spacewidth;
 144                 for (k = 0; k < numspaces; k++)
 145                     dest[j++] = SPACE;
 146                 plen += tabwidth - size.cx;
 147                 lasttab = wb_j + numspaces;
 148             }
 149             else
 150             {
 151                 dest[j++] = str[i++];
 152                 if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
 153                     (format & DT_WORDBREAK))
 154                 {
 155                     if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
 156                         return NULL;
 157                     plen += size.cx;
 158                 }
 159             }
 160             break;
 161
 162         case SPACE:
 163             dest[j++] = str[i++];
 164             if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
 165                 (format & DT_WORDBREAK))
 166             {
 167                 wb_i = i;
 168                 wb_j = j - 1;
 169                 wb_count = *count;
 170                 if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
 171                     return NULL;
 172                 plen += size.cx;
 173             }
 174             break;
 175
 176         default:
 177             dest[j++] = str[i++];
 178             if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
 179                 (format & DT_WORDBREAK))
 180             {
 181                 if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
 182                     return NULL;
 183                 plen += size.cx;
 184             }
 185         }
 186
 187         (*count)--;
 188         if (!(format & DT_NOCLIP) || (format & DT_WORDBREAK))
 189         {
 190             if (plen > width)
 191             {
 192                 if (format & DT_WORDBREAK)
 193                 {
 194                     if (wb_j)
 195                     {
 196                         *len = wb_j;
 197                         *count = wb_count - 1;
 198                         return (&str[wb_i]);
 199                     }
 200                 }
 201                 else
 202                 {
 203                     *len = j;
 204                     return (&str[i]);
 205                 }
 206             }
 207         }
 208     }
 209
 210     *len = j;
 211     return NULL;
 212 }
 213
 214
 215 /***********************************************************************
 216  *           DrawTextExW    (USER32.@)
 217  */
 218 #define MAX_STATIC_BUFFER 1024
 219 INT WINAPI DrawTextExW( HDC hdc, LPWSTR str, INT i_count,
 220                         LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
 221 {
 222     SIZE size;
 223     const WCHAR *strPtr;
 224     static WCHAR line[MAX_STATIC_BUFFER];
 225     int len, lh, count=i_count;
 226     int prefix_x = 0;
 227     int prefix_end = 0;
 228     TEXTMETRICW tm;
 229     int lmargin = 0, rmargin = 0;
 230     int x = rect->left, y = rect->top;
 231     int width = rect->right - rect->left;
 232     int max_width = 0;
 233
 234     TRACE("%s, %d , [(%d,%d),(%d,%d)]\n", debugstr_wn (str, count), count,
 235           rect->left, rect->top, rect->right, rect->bottom);
 236
 237    if (dtp) TRACE("Params: iTabLength=%d, iLeftMargin=%d, iRightMargin=%d\n",
 238           dtp->iTabLength, dtp->iLeftMargin, dtp->iRightMargin);
 239
 240     if (!str) return 0;
 241     if (count == -1) count = strlenW(str);
 242     if (count == 0) return 0;
 243     strPtr = str;
 244
 245     GetTextMetricsW(hdc, &tm);
 246     if (flags & DT_EXTERNALLEADING)
 247         lh = tm.tmHeight + tm.tmExternalLeading;
 248     else
 249         lh = tm.tmHeight;
 250
 251     if (dtp)
 252     {
 253         lmargin = dtp->iLeftMargin * tm.tmAveCharWidth;
 254         rmargin = dtp->iRightMargin * tm.tmAveCharWidth;
 255         if (!(flags & (DT_CENTER | DT_RIGHT)))
 256             x += lmargin;
 257         dtp->uiLengthDrawn = 0;     /* This param RECEIVES number of chars processed */
 258     }
 259
 260     tabstop = ((flags & DT_TABSTOP) && dtp) ? dtp->iTabLength : 8;
 261
 262     if (flags & DT_EXPANDTABS)
 263     {
 264         GetTextExtentPointW(hdc, SPACEW, 1, &size);
 265         spacewidth = size.cx;
 266         GetTextExtentPointW(hdc, oW, 1, &size);
 267         tabwidth = size.cx * tabstop;
 268     }
 269
 270     if (flags & DT_CALCRECT) flags |= DT_NOCLIP;
 271
 272     do
 273     {
 274         prefix_offset = -1;
 275         len = MAX_STATIC_BUFFER;
 276         strPtr = TEXT_NextLineW(hdc, strPtr, &count, line, &len, width, flags);
 277
 278         if (prefix_offset != -1)
 279         {
 280             GetTextExtentPointW(hdc, line, prefix_offset, &size);
 281             prefix_x = size.cx;
 282             GetTextExtentPointW(hdc, line, prefix_offset + 1, &size);
 283             prefix_end = size.cx - 1;
 284         }
 285
 286         if (!GetTextExtentPointW(hdc, line, len, &size)) return 0;
 287         if (flags & DT_CENTER) x = (rect->left + rect->right -
 288                                     size.cx) / 2;
 289         else if (flags & DT_RIGHT) x = rect->right - size.cx;
 290
 291         if (flags & DT_SINGLELINE)
 292         {
 293             if (flags & DT_VCENTER) y = rect->top +
 294                 (rect->bottom - rect->top) / 2 - size.cy / 2;
 295             else if (flags & DT_BOTTOM) y = rect->bottom - size.cy;
 296         }
 297
 298         if ((flags & DT_SINGLELINE) && size.cx > width &&
 299             (flags & (DT_PATH_ELLIPSIS | DT_END_ELLIPSIS | DT_WORD_ELLIPSIS)))
 300         {
 301                 WCHAR swapStr[countof(line)];
 302                 WCHAR* fnameDelim = NULL;
 303                 int totalLen = i_count >= 0 ? i_count : strlenW(str);
 304                     int fnameLen = totalLen;
 305
 306                     /* allow room for '...' */
 307                     count = min(totalLen+3, countof(line)-3);
 308
 309                     if (flags & DT_WORD_ELLIPSIS)
 310                         flags |= DT_WORDBREAK;
 311
 312                     if (flags & DT_PATH_ELLIPSIS)
 313                     {
 314                         WCHAR* lastBkSlash = NULL;
 315                         WCHAR* lastFwdSlash = NULL;
 316                         strncpyW(line, str, totalLen);
 317                         line[totalLen] = '\0';
 318                         lastBkSlash = strrchrW(line, BACK_SLASHW[0]);
 319                         lastFwdSlash = strrchrW(line, FORWARD_SLASHW[0]);
 320                         fnameDelim = lastBkSlash > lastFwdSlash ? lastBkSlash : lastFwdSlash;
 321
 322                         if (fnameDelim)
 323                             fnameLen = &line[totalLen] - fnameDelim;
 324                         else
 325                             fnameDelim = (WCHAR*)str;
 326
 327                         strcpyW(swapStr, ELLIPSISW);
 328                         strncpyW(swapStr+strlenW(swapStr), fnameDelim, fnameLen);
 329                         swapStr[fnameLen+3] = '\0';
 330                         strncpyW(swapStr+strlenW(swapStr), str, totalLen - fnameLen);
 331                         swapStr[totalLen+3] = '\0';
 332                     }
 333                     else  /* DT_END_ELLIPSIS | DT_WORD_ELLIPSIS */
 334                     {
 335                         strcpyW(swapStr, ELLIPSISW);
 336                         strncpyW(swapStr+strlenW(swapStr), str, totalLen);
 337                     }
 338
 339                     len = MAX_STATIC_BUFFER;
 340                     TEXT_NextLineW(hdc, swapStr, &count, line, &len, width, flags);
 341
 342                     /* if only the ELLIPSIS will fit, just let it be clipped */
 343                     len = max(3, len);
 344                     GetTextExtentPointW(hdc, line, len, &size);
 345
 346                     /* FIXME:
 347                      * NextLine uses GetTextExtentPoint for each character,
 348                      * rather than GetCharABCWidth...  So the whitespace between
 349                      * characters is ignored in the width measurement, and the
 350                      * reported len is too great.  To compensate, we must get
 351                      * the width of the entire line and adjust len accordingly.
 352                     */
 353                     while ((size.cx > width) && (len > 3))
 354                     {
 355                         line[--len] = '\0';
 356                         GetTextExtentPointW(hdc, line, len, &size);
 357                     }
 358
 359                     if (fnameLen < len-3) /* some of the path will fit */
 360                     {
 361                         /* put the ELLIPSIS between the path and filename */
 362                         strncpyW(swapStr, &line[fnameLen+3], len-3-fnameLen);
 363                         swapStr[len-3-fnameLen] = '\0';
 364                         strcatW(swapStr, ELLIPSISW);
 365                         strncpyW(swapStr+strlenW(swapStr), &line[3], fnameLen);
 366                     }
 367                     else
 368                     {
 369                         /* move the ELLIPSIS to the end */
 370                         strncpyW(swapStr, &line[3], len-3);
 371                         swapStr[len-3] = '\0';
 372                         strcpyW(swapStr+strlenW(swapStr), ELLIPSISW);
 373                     }
 374
 375                     strncpyW(line, swapStr, len);
 376                     line[len] = '\0';
 377                     strPtr = NULL;
 378
 379                if (flags & DT_MODIFYSTRING)
 380                     strcpyW(str, swapStr);
 381
 382                /* Note that really we ought to refigure the location of
 383                 * the underline for the prefix; it might be currently set for
 384                 * something we have just ellipsified out.
 385                 */
 386         }
 387         if (!(flags & DT_CALCRECT))
 388         {
 389            if (!ExtTextOutW( hdc, x, y,
 390                              ((flags & DT_NOCLIP) ? 0 : ETO_CLIPPED) |
 391                              ((flags & DT_RTLREADING) ? ETO_RTLREADING : 0),
 392                     rect, line, len, NULL ))  return 0;
 393             if (prefix_offset != -1)
 394             {
 395                 HPEN hpen = CreatePen( PS_SOLID, 1, GetTextColor(hdc) );
 396                 HPEN oldPen = SelectObject( hdc, hpen );
 397                 MoveToEx(hdc, x + prefix_x, y + tm.tmAscent + 1, NULL );
 398                 LineTo(hdc, x + prefix_end + 1, y + tm.tmAscent + 1 );
 399                 SelectObject( hdc, oldPen );
 400                 DeleteObject( hpen );
 401             }
 402         }
 403         else if (size.cx > max_width)
 404             max_width = size.cx;
 405
 406         y += lh;
 407         if (strPtr)
 408         {
 409             if (!(flags & DT_NOCLIP))
 410             {
 411                 if (y > rect->bottom - lh)
 412                     break;
 413             }
 414         }
 415         if (dtp)
 416             dtp->uiLengthDrawn += len;
 417     }
 418     while (strPtr);
 419
 420     if (flags & DT_CALCRECT)
 421     {
 422         rect->right = rect->left + max_width;
 423         rect->bottom = y;
 424         if (dtp)
 425             rect->right += lmargin + rmargin;
 426     }
 427     return y - rect->top;
 428 }
 429
 430 /***********************************************************************
 431  *           DrawTextExA    (USER32.@)
 432  */
 433 INT WINAPI DrawTextExA( HDC hdc, LPSTR str, INT count,
 434                         LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
 435 {
 436    WCHAR *wstr;
 437    INT ret = 0;
 438    DWORD wcount;
 439
 440    if (count == -1) count = strlen(str);
 441    if (!count) return 0;
 442    wcount = MultiByteToWideChar( CP_ACP, 0, str, count, NULL, 0 );
 443    wstr = HeapAlloc(GetProcessHeap(), 0, wcount * sizeof(WCHAR));
 444    if (wstr)
 445    {
 446        MultiByteToWideChar( CP_ACP, 0, str, count, wstr, wcount );
 447        ret = DrawTextExW( hdc, wstr, wcount, rect, flags, NULL );
 448        if (flags & DT_MODIFYSTRING)
 449             WideCharToMultiByte( CP_ACP, 0, wstr, -1, str, count, NULL, NULL );
 450        HeapFree(GetProcessHeap(), 0, wstr);
 451    }
 452    return ret;
 453 }
 454
 455 /***********************************************************************
 456  *           DrawTextW    (USER32.@)
 457  */
 458 INT WINAPI DrawTextW( HDC hdc, LPCWSTR str, INT count, LPRECT rect, UINT flags )
 459 {
 460     DRAWTEXTPARAMS dtp;
 461
 462     memset (&dtp, 0, sizeof(dtp));
 463     if (flags & DT_TABSTOP)
 464     {
 465         dtp.iTabLength = (flags >> 8) && 0xff;
 466         flags &= 0xffff00ff;
 467     }
 468     return DrawTextExW(hdc, (LPWSTR)str, count, rect, flags, &dtp);
 469 }
 470
 471 /***********************************************************************
 472  *           DrawTextA    (USER32.@)
 473  */
 474 INT WINAPI DrawTextA( HDC hdc, LPCSTR str, INT count, LPRECT rect, UINT flags )
 475 {
 476     DRAWTEXTPARAMS dtp;
 477
 478     memset (&dtp, 0, sizeof(dtp));
 479     if (flags & DT_TABSTOP)
 480     {
 481         dtp.iTabLength = (flags >> 8) && 0xff;
 482         flags &= 0xffff00ff;
 483     }
 484     return DrawTextExA( hdc, (LPSTR)str, count, rect, flags, &dtp );
 485 }
 486
 487 /***********************************************************************
 488  *           DrawText    (USER.85)
 489  */
 490 INT16 WINAPI DrawText16( HDC16 hdc, LPCSTR str, INT16 count, LPRECT16 rect, UINT16 flags )
 491 {
 492     INT16 ret;
 493
 494     if (rect)
 495     {
 496         RECT rect32;
 497         CONV_RECT16TO32( rect, &rect32 );
 498         ret = DrawTextA( hdc, str, count, &rect32, flags );
 499         CONV_RECT32TO16( &rect32, rect );
 500     }
 501     else ret = DrawTextA( hdc, str, count, NULL, flags);
 502     return ret;
 503 }
 504
 505
 506 /***********************************************************************
 507  *
 508  *           GrayString functions
 509  */
 510
 511 /* ### start build ### */
 512 extern WORD CALLBACK TEXT_CallTo16_word_wlw(GRAYSTRINGPROC16,WORD,LONG,WORD);
 513 /* ### stop build ### */
 514
 515 struct gray_string_info
 516 {
 517     GRAYSTRINGPROC16 proc;
 518     LPARAM           param;
 519 };
 520
 521 /* callback for 16-bit gray string proc */
 522 static BOOL CALLBACK gray_string_callback( HDC hdc, LPARAM param, INT len )
 523 {
 524     const struct gray_string_info *info = (struct gray_string_info *)param;
 525     return TEXT_CallTo16_word_wlw( info->proc, hdc, info->param, len );
 526 }
 527
 528 /***********************************************************************
 529  *           TEXT_GrayString
 530  *
 531  * FIXME: The call to 16-bit code only works because the wine GDI is a 16-bit
 532  * heap and we can guarantee that the handles fit in an INT16. We have to
 533  * rethink the strategy once the migration to NT handles is complete.
 534  * We are going to get a lot of code-duplication once this migration is
 535  * completed...
 536  *
 537  */
 538 static BOOL TEXT_GrayString(HDC hdc, HBRUSH hb, GRAYSTRINGPROC fn, LPARAM lp, INT len,
 539                             INT x, INT y, INT cx, INT cy, BOOL unicode, BOOL _32bit)
 540 {
 541     HBITMAP hbm, hbmsave;
 542     HBRUSH hbsave;
 543     HFONT hfsave;
 544     HDC memdc;
 545     int slen = len;
 546     BOOL retval = TRUE;
 547     COLORREF fg, bg;
 548
 549     if(!hdc) return FALSE;
 550     if (!(memdc = CreateCompatibleDC(hdc))) return FALSE;
 551
 552     if(len == 0)
 553     {
 554         if(unicode)
 555             slen = lstrlenW((LPCWSTR)lp);
 556         else if(_32bit)
 557             slen = strlen((LPCSTR)lp);
 558         else
 559             slen = strlen(MapSL(lp));
 560     }
 561
 562     if((cx == 0 || cy == 0) && slen != -1)
 563     {
 564         SIZE s;
 565         if(unicode)
 566             GetTextExtentPoint32W(hdc, (LPCWSTR)lp, slen, &s);
 567         else if(_32bit)
 568             GetTextExtentPoint32A(hdc, (LPCSTR)lp, slen, &s);
 569         else
 570             GetTextExtentPoint32A(hdc, MapSL(lp), slen, &s);
 571         if(cx == 0) cx = s.cx;
 572         if(cy == 0) cy = s.cy;
 573     }
 574
 575     hbm = CreateBitmap(cx, cy, 1, 1, NULL);
 576     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
 577     hbsave = SelectObject( memdc, GetStockObject(BLACK_BRUSH) );
 578     PatBlt( memdc, 0, 0, cx, cy, PATCOPY );
 579     SelectObject( memdc, hbsave );
 580     SetTextColor(memdc, RGB(255, 255, 255));
 581     SetBkColor(memdc, RGB(0, 0, 0));
 582     hfsave = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
 583
 584     if(fn)
 585     {
 586         if(_32bit)
 587             retval = fn(memdc, lp, slen);
 588         else
 589             retval = (BOOL)((BOOL16)((GRAYSTRINGPROC16)fn)((HDC16)memdc, lp, (INT16)slen));
 590     }
 591     else
 592     {
 593         if(unicode)
 594             TextOutW(memdc, 0, 0, (LPCWSTR)lp, slen);
 595         else if(_32bit)
 596             TextOutA(memdc, 0, 0, (LPCSTR)lp, slen);
 597         else
 598             TextOutA(memdc, 0, 0, MapSL(lp), slen);
 599     }
 600
 601     SelectObject(memdc, hfsave);
 602
 603 /*
 604  * Windows doc says that the bitmap isn't grayed when len == -1 and
 605  * the callback function returns FALSE. However, testing this on
 606  * win95 showed otherwise...
 607 */
 608 #ifdef GRAYSTRING_USING_DOCUMENTED_BEHAVIOUR
 609     if(retval || len != -1)
 610 #endif
 611     {
 612         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
 613         PatBlt(memdc, 0, 0, cx, cy, 0x000A0329);
 614         SelectObject(memdc, hbsave);
 615     }
 616
 617     if(hb) hbsave = (HBRUSH)SelectObject(hdc, hb);
 618     fg = SetTextColor(hdc, RGB(0, 0, 0));
 619     bg = SetBkColor(hdc, RGB(255, 255, 255));
 620     BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00E20746);
 621     SetTextColor(hdc, fg);
 622     SetBkColor(hdc, bg);
 623     if(hb) SelectObject(hdc, hbsave);
 624
 625     SelectObject(memdc, hbmsave);
 626     DeleteObject(hbm);
 627     DeleteDC(memdc);
 628     return retval;
 629 }
 630
 631
 632 /***********************************************************************
 633  *           GrayString   (USER.185)
 634  */
 635 BOOL16 WINAPI GrayString16( HDC16 hdc, HBRUSH16 hbr, GRAYSTRINGPROC16 gsprc,
 636                             LPARAM lParam, INT16 cch, INT16 x, INT16 y,
 637                             INT16 cx, INT16 cy )
 638 {
 639     struct gray_string_info info;
 640
 641     if (!gsprc) return TEXT_GrayString(hdc, hbr, NULL, lParam, cch, x, y, cx, cy, FALSE, FALSE);
 642     info.proc  = gsprc;
 643     info.param = lParam;
 644     return TEXT_GrayString( hdc, hbr, gray_string_callback, (LPARAM)&info,
 645                             cch, x, y, cx, cy, FALSE, FALSE);
 646 }
 647
 648
 649 /***********************************************************************
 650  *           GrayStringA   (USER32.@)
 651  */
 652 BOOL WINAPI GrayStringA( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc,
 653                          LPARAM lParam, INT cch, INT x, INT y,
 654                          INT cx, INT cy )
 655 {
 656     return TEXT_GrayString(hdc, hbr, gsprc, lParam, cch, x, y, cx, cy,
 657                            FALSE, TRUE);
 658 }
 659
 660
 661 /***********************************************************************
 662  *           GrayStringW   (USER32.@)
 663  */
 664 BOOL WINAPI GrayStringW( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc,
 665                          LPARAM lParam, INT cch, INT x, INT y,
 666                          INT cx, INT cy )
 667 {
 668     return TEXT_GrayString(hdc, hbr, gsprc, lParam, cch, x, y, cx, cy,
 669                            TRUE, TRUE);
 670 }
 671
 672 /***********************************************************************
 673  *
 674  *           TabbedText functions
 675  */
 676
 677 /***********************************************************************
 678  *           TEXT_TabbedTextOut
 679  *
 680  * Helper function for TabbedTextOut() and GetTabbedTextExtent().
 681  * Note: this doesn't work too well for text-alignment modes other
 682  *       than TA_LEFT|TA_TOP. But we want bug-for-bug compatibility :-)
 683  */
 684 static LONG TEXT_TabbedTextOut( HDC hdc, INT x, INT y, LPCSTR lpstr,
 685                                 INT count, INT cTabStops, const INT16 *lpTabPos16,
 686                                 const INT *lpTabPos32, INT nTabOrg,
 687                                 BOOL fDisplayText )
 688 {
 689     INT defWidth;
 690     SIZE extent;
 691     int i, tabPos = x;
 692     int start = x;
 693
 694     extent.cx = 0;
 695     extent.cy = 0;
 696
 697     if (cTabStops == 1)
 698     {
 699         defWidth = lpTabPos32 ? *lpTabPos32 : *lpTabPos16;
 700         cTabStops = 0;
 701     }
 702     else
 703     {
 704         TEXTMETRICA tm;
 705         GetTextMetricsA( hdc, &tm );
 706         defWidth = 8 * tm.tmAveCharWidth;
 707     }
 708
 709     while (count > 0)
 710     {
 711         for (i = 0; i < count; i++)
 712             if (lpstr[i] == '\t') break;
 713         GetTextExtentPointA( hdc, lpstr, i, &extent );
 714         if (lpTabPos32)
 715         {
 716             while ((cTabStops > 0) &&
 717                    (nTabOrg + *lpTabPos32 <= x + extent.cx))
 718             {
 719                 lpTabPos32++;
 720                 cTabStops--;
 721             }
 722         }
 723         else
 724         {
 725             while ((cTabStops > 0) &&
 726                    (nTabOrg + *lpTabPos16 <= x + extent.cx))
 727             {
 728                 lpTabPos16++;
 729                 cTabStops--;
 730             }
 731         }
 732         if (i == count)
 733             tabPos = x + extent.cx;
 734         else if (cTabStops > 0)
 735             tabPos = nTabOrg + (lpTabPos32 ? *lpTabPos32 : *lpTabPos16);
 736         else
 737             tabPos = nTabOrg + ((x + extent.cx - nTabOrg) / defWidth + 1) * defWidth;
 738         if (fDisplayText)
 739         {
 740             RECT r;
 741             r.left   = x;
 742             r.top    = y;
 743             r.right  = tabPos;
 744             r.bottom = y + extent.cy;
 745             ExtTextOutA( hdc, x, y,
 746                            GetBkMode(hdc) == OPAQUE ? ETO_OPAQUE : 0,
 747                            &r, lpstr, i, NULL );
 748         }
 749         x = tabPos;
 750         count -= i+1;
 751         lpstr += i+1;
 752     }
 753     return MAKELONG(tabPos - start, extent.cy);
 754 }
 755
 756
 757 /***********************************************************************
 758  *           TabbedTextOut    (USER.196)
 759  */
 760 LONG WINAPI TabbedTextOut16( HDC16 hdc, INT16 x, INT16 y, LPCSTR lpstr,
 761                              INT16 count, INT16 cTabStops,
 762                              const INT16 *lpTabPos, INT16 nTabOrg )
 763 {
 764     TRACE("%04x %d,%d %s %d\n", hdc, x, y, debugstr_an(lpstr,count), count );
 765     return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
 766                                lpTabPos, NULL, nTabOrg, TRUE );
 767 }
 768
 769
 770 /***********************************************************************
 771  *           TabbedTextOutA    (USER32.@)
 772  */
 773 LONG WINAPI TabbedTextOutA( HDC hdc, INT x, INT y, LPCSTR lpstr, INT count,
 774                             INT cTabStops, const INT *lpTabPos, INT nTabOrg )
 775 {
 776     TRACE("%04x %d,%d %s %d\n", hdc, x, y, debugstr_an(lpstr,count), count );
 777     return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
 778                                NULL, lpTabPos, nTabOrg, TRUE );
 779 }
 780
 781
 782 /***********************************************************************
 783  *           TabbedTextOutW    (USER32.@)
 784  */
 785 LONG WINAPI TabbedTextOutW( HDC hdc, INT x, INT y, LPCWSTR str, INT count,
 786                             INT cTabStops, const INT *lpTabPos, INT nTabOrg )
 787 {
 788     LONG ret;
 789     LPSTR p;
 790     INT acount;
 791     UINT codepage = CP_ACP; /* FIXME: get codepage of font charset */
 792
 793     acount = WideCharToMultiByte(codepage,0,str,count,NULL,0,NULL,NULL);
 794     p = HeapAlloc( GetProcessHeap(), 0, acount );
 795     if(p == NULL) return 0; /* FIXME: is this the correct return on failure */
 796     acount = WideCharToMultiByte(codepage,0,str,count,p,acount,NULL,NULL);
 797     ret = TabbedTextOutA( hdc, x, y, p, acount, cTabStops, lpTabPos, nTabOrg );
 798     HeapFree( GetProcessHeap(), 0, p );
 799     return ret;
 800 }
 801
 802
 803 /***********************************************************************
 804  *           GetTabbedTextExtent    (USER.197)
 805  */
 806 DWORD WINAPI GetTabbedTextExtent16( HDC16 hdc, LPCSTR lpstr, INT16 count,
 807                                     INT16 cTabStops, const INT16 *lpTabPos )
 808 {
 809     TRACE("%04x %s %d\n", hdc, debugstr_an(lpstr,count), count );
 810     return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
 811                                lpTabPos, NULL, 0, FALSE );
 812 }
 813
 814
 815 /***********************************************************************
 816  *           GetTabbedTextExtentA    (USER32.@)
 817  */
 818 DWORD WINAPI GetTabbedTextExtentA( HDC hdc, LPCSTR lpstr, INT count,
 819                                    INT cTabStops, const INT *lpTabPos )
 820 {
 821     TRACE("%04x %s %d\n", hdc, debugstr_an(lpstr,count), count );
 822     return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
 823                                NULL, lpTabPos, 0, FALSE );
 824 }
 825
 826
 827 /***********************************************************************
 828  *           GetTabbedTextExtentW    (USER32.@)
 829  */
 830 DWORD WINAPI GetTabbedTextExtentW( HDC hdc, LPCWSTR lpstr, INT count,
 831                                    INT cTabStops, const INT *lpTabPos )
 832 {
 833     LONG ret;
 834     LPSTR p;
 835     INT acount;
 836     UINT codepage = CP_ACP; /* FIXME: get codepage of font charset */
 837
 838     acount = WideCharToMultiByte(codepage,0,lpstr,count,NULL,0,NULL,NULL);
 839     p = HeapAlloc( GetProcessHeap(), 0, acount );
 840     if(p == NULL) return 0; /* FIXME: is this the correct failure value? */
 841     acount = WideCharToMultiByte(codepage,0,lpstr,count,p,acount,NULL,NULL);
 842     ret = GetTabbedTextExtentA( hdc, p, acount, cTabStops, lpTabPos );
 843     HeapFree( GetProcessHeap(), 0, p );
 844     return ret;
 845 }