dlls/riched20/style.c

   1 /*
   2  * RichEdit style management functions
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "editor.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
  24 WINE_DECLARE_DEBUG_CHANNEL(richedit_style);
  25
  26 static int all_refs = 0;
  27
  28 /* the following routines assume that:
  29  * - char2[AW] extends char[AW] by adding fields at the end of the charA form)
  30  * - szFaceName is the last field of char[AW] form, and wWeight the first of 2[AW]
  31  * - the difference between A and W form is the szFaceName as Ansi vs Unicode string
  32  * - because of alignment, offset of wWeight field in 2[AW] structure *IS NOT*
  33  *   sizeof(char[AW])
  34  */
  35
  36 BOOL cfany_to_cf2w(CHARFORMAT2W *to, const CHARFORMAT2W *from)
  37 {
  38   if (from->cbSize == sizeof(CHARFORMATA))
  39   {
  40     CHARFORMATA *f = (CHARFORMATA *)from;
  41     CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
  42     to->cbSize = sizeof(CHARFORMAT2W);
  43     if (f->dwMask & CFM_FACE) {
  44       MultiByteToWideChar(CP_ACP, 0, f->szFaceName, -1, to->szFaceName, ARRAY_SIZE(to->szFaceName));
  45     }
  46     return TRUE;
  47   }
  48   if (from->cbSize == sizeof(CHARFORMATW))
  49   {
  50     CHARFORMATW *f = (CHARFORMATW *)from;
  51     CopyMemory(to, f, sizeof(*f));
  52     /* theoretically, we don't need to zero the remaining memory */
  53     ZeroMemory(&to->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W, wWeight));
  54     to->cbSize = sizeof(CHARFORMAT2W);
  55     return TRUE;
  56   }
  57   if (from->cbSize == sizeof(CHARFORMAT2A))
  58   {
  59     CHARFORMAT2A *f = (CHARFORMAT2A *)from;
  60     /* copy the A structure without face name */
  61     CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
  62     /* convert face name */
  63     if (f->dwMask & CFM_FACE)
  64       MultiByteToWideChar(CP_ACP, 0, f->szFaceName, -1, to->szFaceName, ARRAY_SIZE(to->szFaceName));
  65     /* copy the rest of the 2A structure to 2W */
  66     CopyMemory(&to->wWeight, &f->wWeight, sizeof(CHARFORMAT2A)-FIELD_OFFSET(CHARFORMAT2A, wWeight));
  67     to->cbSize = sizeof(CHARFORMAT2W);
  68     return TRUE;
  69   }
  70   if (from->cbSize == sizeof(CHARFORMAT2W))
  71   {
  72     CopyMemory(to, from, sizeof(CHARFORMAT2W));
  73     return TRUE;
  74   }
  75
  76   return FALSE;
  77 }
  78
  79 BOOL cf2w_to_cfany(CHARFORMAT2W *to, const CHARFORMAT2W *from)
  80 {
  81   assert(from->cbSize == sizeof(CHARFORMAT2W));
  82   if (to->cbSize == sizeof(CHARFORMATA))
  83   {
  84     CHARFORMATA *t = (CHARFORMATA *)to;
  85     CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
  86     WideCharToMultiByte(CP_ACP, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), NULL, NULL);
  87     t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
  88     t->dwMask &= CFM_ALL;
  89     t->dwEffects &= CFM_EFFECTS;
  90     return TRUE;
  91   }
  92   if (to->cbSize == sizeof(CHARFORMATW))
  93   {
  94     CHARFORMATW *t = (CHARFORMATW *)to;
  95     CopyMemory(t, from, sizeof(*t));
  96     t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
  97     t->dwMask &= CFM_ALL;
  98     t->dwEffects &= CFM_EFFECTS;
  99     return TRUE;
 100   }
 101   if (to->cbSize == sizeof(CHARFORMAT2A))
 102   {
 103     CHARFORMAT2A *t = (CHARFORMAT2A *)to;
 104     /* copy the A structure without face name */
 105     CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
 106     /* convert face name */
 107     WideCharToMultiByte(CP_ACP, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), NULL, NULL);
 108     /* copy the rest of the 2A structure to 2W */
 109     CopyMemory(&t->wWeight, &from->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W,wWeight));
 110     t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
 111     return TRUE;
 112   }
 113   if (to->cbSize == sizeof(CHARFORMAT2W))
 114   {
 115     CopyMemory(to, from, sizeof(CHARFORMAT2W));
 116     return TRUE;
 117   }
 118   return FALSE;
 119 }
 120
 121 ME_Style *ME_MakeStyle(CHARFORMAT2W *style)
 122 {
 123   ME_Style *s = heap_alloc(sizeof(*s));
 124
 125   assert(style->cbSize == sizeof(CHARFORMAT2W));
 126   s->fmt = *style;
 127   s->nRefs = 1;
 128   s->font_cache = NULL;
 129   memset(&s->tm, 0, sizeof(s->tm));
 130   s->tm.tmAscent = -1;
 131   s->script_cache = NULL;
 132   list_init(&s->entry);
 133   all_refs++;
 134   TRACE_(richedit_style)("ME_MakeStyle %p, total refs=%d\n", s, all_refs);
 135   return s;
 136 }
 137
 138 #define COPY_STYLE_ITEM(mask, member) \
 139   if (mod->dwMask & mask) { \
 140     fmt.dwMask |= mask;\
 141     fmt.member = mod->member;\
 142   }
 143
 144 #define COPY_STYLE_ITEM_MEMCPY(mask, member) \
 145   if (mod->dwMask & mask) { \
 146     fmt.dwMask |= mask;\
 147     CopyMemory(fmt.member, mod->member, sizeof(mod->member));\
 148   }
 149
 150 void ME_InitCharFormat2W(CHARFORMAT2W *pFmt)
 151 {
 152   ZeroMemory(pFmt, sizeof(CHARFORMAT2W));
 153   pFmt->cbSize = sizeof(CHARFORMAT2W);
 154 }
 155
 156 ME_Style *ME_ApplyStyle(ME_TextEditor *editor, ME_Style *sSrc, CHARFORMAT2W *mod)
 157 {
 158   CHARFORMAT2W fmt = sSrc->fmt;
 159   ME_Style *s;
 160
 161   assert(mod->cbSize == sizeof(CHARFORMAT2W));
 162   COPY_STYLE_ITEM(CFM_ANIMATION, bAnimation);
 163   COPY_STYLE_ITEM(CFM_BACKCOLOR, crBackColor);
 164   COPY_STYLE_ITEM(CFM_CHARSET, bCharSet);
 165   COPY_STYLE_ITEM(CFM_COLOR, crTextColor);
 166   COPY_STYLE_ITEM_MEMCPY(CFM_FACE, szFaceName);
 167   COPY_STYLE_ITEM(CFM_KERNING, wKerning);
 168   COPY_STYLE_ITEM(CFM_LCID, lcid);
 169   COPY_STYLE_ITEM(CFM_OFFSET, yOffset);
 170   COPY_STYLE_ITEM(CFM_REVAUTHOR, bRevAuthor);
 171   if (mod->dwMask & CFM_SIZE) {
 172     fmt.dwMask |= CFM_SIZE;
 173     fmt.yHeight = min(mod->yHeight, yHeightCharPtsMost * 20);
 174   }
 175   COPY_STYLE_ITEM(CFM_SPACING, sSpacing);
 176   COPY_STYLE_ITEM(CFM_STYLE, sStyle);
 177   COPY_STYLE_ITEM(CFM_WEIGHT, wWeight);
 178   /* FIXME: this is not documented this way, but that's the more logical */
 179   COPY_STYLE_ITEM(CFM_FACE, bPitchAndFamily);
 180
 181   fmt.dwEffects &= ~(mod->dwMask);
 182   fmt.dwEffects |= mod->dwEffects & mod->dwMask;
 183   fmt.dwMask |= mod->dwMask;
 184   if (mod->dwMask & CFM_COLOR)
 185   {
 186     if (mod->dwEffects & CFE_AUTOCOLOR)
 187       fmt.dwEffects |= CFE_AUTOCOLOR;
 188     else
 189       fmt.dwEffects &= ~CFE_AUTOCOLOR;
 190   }
 191
 192   COPY_STYLE_ITEM(CFM_UNDERLINETYPE, bUnderlineType);
 193   /* If the CFM_UNDERLINE effect is not specified, set it appropriately */
 194   if ((mod->dwMask & CFM_UNDERLINETYPE) && !(mod->dwMask & CFM_UNDERLINE))
 195   {
 196       fmt.dwMask |= CFM_UNDERLINE;
 197       if (mod->bUnderlineType == CFU_UNDERLINENONE)
 198           fmt.dwEffects &= ~CFE_UNDERLINE;
 199       else
 200           fmt.dwEffects |= CFE_UNDERLINE;
 201   }
 202
 203   if (mod->dwMask & CFM_BOLD && !(mod->dwMask & CFM_WEIGHT))
 204   {
 205       fmt.wWeight = (mod->dwEffects & CFE_BOLD) ? FW_BOLD : FW_NORMAL;
 206   } else if (mod->dwMask & CFM_WEIGHT && !(mod->dwMask & CFM_BOLD)) {
 207       if (mod->wWeight > FW_NORMAL)
 208           fmt.dwEffects |= CFE_BOLD;
 209       else
 210           fmt.dwEffects &= ~CFE_BOLD;
 211   }
 212
 213   LIST_FOR_EACH_ENTRY(s, &editor->style_list, ME_Style, entry)
 214   {
 215       if (!memcmp( &s->fmt, &fmt, sizeof(fmt) ))
 216       {
 217           TRACE_(richedit_style)("found existing style %p\n", s);
 218           ME_AddRefStyle( s );
 219           return s;
 220       }
 221   }
 222
 223   s = ME_MakeStyle( &fmt );
 224   if (s)
 225       list_add_head( &editor->style_list, &s->entry );
 226   TRACE_(richedit_style)("created new style %p\n", s);
 227   return s;
 228 }
 229
 230 void ME_CopyCharFormat(CHARFORMAT2W *pDest, const CHARFORMAT2W *pSrc)
 231 {
 232   /* using this with non-2W structs is forbidden */
 233   assert(pSrc->cbSize == sizeof(CHARFORMAT2W));
 234   assert(pDest->cbSize == sizeof(CHARFORMAT2W));
 235   *pDest = *pSrc;
 236 }
 237
 238 static void ME_DumpStyleEffect(char **p, const char *name, const CHARFORMAT2W *fmt, int mask)
 239 {
 240   *p += sprintf(*p, "%-22s%s\n", name, (fmt->dwMask & mask) ? ((fmt->dwEffects & mask) ? "YES" : "no") : "N/A");
 241 }
 242
 243 void ME_DumpStyle(ME_Style *s)
 244 {
 245   char buf[2048];
 246   ME_DumpStyleToBuf(&s->fmt, buf);
 247   TRACE_(richedit_style)("%s\n", buf);
 248 }
 249
 250 void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048])
 251 {
 252   /* FIXME only CHARFORMAT styles implemented */
 253   /* this function sucks, doesn't check for buffer overruns but it's "good enough" as for debug code */
 254   char *p;
 255   p = buf;
 256   p += sprintf(p, "Font face:            ");
 257   if (pFmt->dwMask & CFM_FACE) {
 258     WCHAR *q = pFmt->szFaceName;
 259     while(*q) {
 260       *p++ = (*q > 255) ? '?' : *q;
 261       q++;
 262     }
 263   } else
 264     p += sprintf(p, "N/A");
 265
 266   if (pFmt->dwMask & CFM_SIZE)
 267     p += sprintf(p, "\nFont size:            %d\n", pFmt->yHeight);
 268   else
 269     p += sprintf(p, "\nFont size:            N/A\n");
 270
 271   if (pFmt->dwMask & CFM_OFFSET)
 272     p += sprintf(p, "Char offset:          %d\n", pFmt->yOffset);
 273   else
 274     p += sprintf(p, "Char offset:          N/A\n");
 275
 276   if (pFmt->dwMask & CFM_CHARSET)
 277     p += sprintf(p, "Font charset:         %d\n", (int)pFmt->bCharSet);
 278   else
 279     p += sprintf(p, "Font charset:         N/A\n");
 280
 281   /* I'm assuming CFM_xxx and CFE_xxx are the same values, fortunately it IS true wrt used flags*/
 282   ME_DumpStyleEffect(&p, "Font bold:", pFmt, CFM_BOLD);
 283   ME_DumpStyleEffect(&p, "Font italic:", pFmt, CFM_ITALIC);
 284   ME_DumpStyleEffect(&p, "Font underline:", pFmt, CFM_UNDERLINE);
 285   ME_DumpStyleEffect(&p, "Font strikeout:", pFmt, CFM_STRIKEOUT);
 286   ME_DumpStyleEffect(&p, "Hidden text:", pFmt, CFM_HIDDEN);
 287   p += sprintf(p, "Text color:           ");
 288   if (pFmt->dwMask & CFM_COLOR)
 289   {
 290     if (pFmt->dwEffects & CFE_AUTOCOLOR)
 291       p += sprintf(p, "auto\n");
 292     else
 293       p += sprintf(p, "%06x\n", (int)pFmt->crTextColor);
 294   }
 295   else
 296     p += sprintf(p, "N/A\n");
 297   ME_DumpStyleEffect(&p, "Text protected:", pFmt, CFM_PROTECTED);
 298 }
 299
 300
 301 static void
 302 ME_LogFontFromStyle(ME_Context* c, LOGFONTW *lf, const ME_Style *s)
 303 {
 304   ZeroMemory(lf, sizeof(LOGFONTW));
 305   lstrcpyW(lf->lfFaceName, s->fmt.szFaceName);
 306
 307   lf->lfHeight = ME_twips2pointsY(c, -s->fmt.yHeight);
 308
 309   lf->lfWeight = FW_NORMAL;
 310   if (s->fmt.dwEffects & s->fmt.dwMask & CFM_BOLD)
 311     lf->lfWeight = FW_BOLD;
 312   if (s->fmt.dwMask & CFM_WEIGHT)
 313     lf->lfWeight = s->fmt.wWeight;
 314   if (s->fmt.dwEffects & s->fmt.dwMask & CFM_ITALIC)
 315     lf->lfItalic = 1;
 316   if ((s->fmt.dwEffects & s->fmt.dwMask & CFM_UNDERLINE) &&
 317       !(s->fmt.dwEffects & CFE_LINK) &&
 318       s->fmt.bUnderlineType == CFU_CF1UNDERLINE)
 319     lf->lfUnderline = 1;
 320   if (s->fmt.dwEffects & s->fmt.dwMask & CFM_STRIKEOUT)
 321     lf->lfStrikeOut = 1;
 322   if (s->fmt.dwEffects & s->fmt.dwMask & (CFM_SUBSCRIPT|CFM_SUPERSCRIPT))
 323     lf->lfHeight = (lf->lfHeight*2)/3;
 324 /*lf.lfQuality = PROOF_QUALITY; */
 325   if (s->fmt.dwMask & CFM_FACE)
 326     lf->lfPitchAndFamily = s->fmt.bPitchAndFamily;
 327   if (s->fmt.dwMask & CFM_CHARSET)
 328     lf->lfCharSet = s->fmt.bCharSet;
 329 }
 330
 331 void ME_CharFormatFromLogFont(HDC hDC, const LOGFONTW *lf, CHARFORMAT2W *fmt)
 332 {
 333   int ry;
 334
 335   ME_InitCharFormat2W(fmt);
 336   ry = GetDeviceCaps(hDC, LOGPIXELSY);
 337   lstrcpyW(fmt->szFaceName, lf->lfFaceName);
 338   fmt->dwEffects = 0;
 339   fmt->dwMask = CFM_WEIGHT|CFM_BOLD|CFM_ITALIC|CFM_UNDERLINE|CFM_UNDERLINETYPE|CFM_STRIKEOUT|CFM_SIZE|CFM_FACE|CFM_CHARSET;
 340   fmt->wWeight = lf->lfWeight;
 341   fmt->yHeight = -lf->lfHeight*1440/ry;
 342   if (lf->lfWeight > FW_NORMAL) fmt->dwEffects |= CFM_BOLD;
 343   if (lf->lfItalic) fmt->dwEffects |= CFM_ITALIC;
 344   if (lf->lfUnderline) fmt->dwEffects |= CFM_UNDERLINE;
 345   fmt->bUnderlineType = CFU_UNDERLINE;
 346   if (lf->lfStrikeOut) fmt->dwEffects |= CFM_STRIKEOUT;
 347   fmt->bPitchAndFamily = lf->lfPitchAndFamily;
 348   fmt->bCharSet = lf->lfCharSet;
 349 }
 350
 351 static BOOL ME_IsFontEqual(const LOGFONTW *p1, const LOGFONTW *p2)
 352 {
 353   if (memcmp(p1, p2, sizeof(LOGFONTW)-sizeof(p1->lfFaceName)))
 354     return FALSE;
 355   if (wcscmp(p1->lfFaceName, p2->lfFaceName))
 356     return FALSE;
 357   return TRUE;
 358 }
 359
 360 static void release_font_cache(ME_FontCacheItem *item)
 361 {
 362     if (item->nRefs > 0)
 363     {
 364         item->nRefs--;
 365         item->nAge = 0;
 366     }
 367 }
 368
 369 void select_style( ME_Context *c, ME_Style *s )
 370 {
 371     HFONT old_font;
 372     LOGFONTW lf;
 373     int i, empty, age = 0x7FFFFFFF;
 374     ME_FontCacheItem *item;
 375
 376     if (c->current_style == s) return;
 377
 378     if (s)
 379     {
 380         ME_LogFontFromStyle( c, &lf, s );
 381
 382         for (i = 0; i < HFONT_CACHE_SIZE; i++)
 383             c->editor->pFontCache[i].nAge++;
 384         for (i = 0, empty = -1, age = 0; i < HFONT_CACHE_SIZE; i++)
 385         {
 386             item = &c->editor->pFontCache[i];
 387             if (!item->nRefs)
 388             {
 389                 if (item->nAge > age)
 390                 {
 391                     empty = i;
 392                     age = item->nAge;
 393                 }
 394             }
 395
 396             if (item->hFont && ME_IsFontEqual( &item->lfSpecs, &lf ))
 397                 break;
 398         }
 399
 400         if (i < HFONT_CACHE_SIZE) /* found */
 401         {
 402             item = &c->editor->pFontCache[i];
 403             TRACE_(richedit_style)( "font reused %d\n", i );
 404             item->nRefs++;
 405         }
 406         else
 407         {
 408             assert(empty != -1);
 409             item = &c->editor->pFontCache[empty];
 410             if (item->hFont)
 411             {
 412                 TRACE_(richedit_style)( "font deleted %d\n", empty );
 413                 DeleteObject(item->hFont);
 414                 item->hFont = NULL;
 415             }
 416             item->hFont = CreateFontIndirectW( &lf );
 417             TRACE_(richedit_style)( "font created %d\n", empty );
 418             item->nRefs = 1;
 419             item->lfSpecs = lf;
 420         }
 421         s->font_cache = item;
 422         old_font = SelectObject( c->hDC, item->hFont );
 423         GetTextMetricsW( c->hDC, &s->tm );
 424         if (!c->orig_font) c->orig_font = old_font;
 425     }
 426     else
 427     {
 428         SelectObject( c->hDC, c->orig_font );
 429         c->orig_font = NULL;
 430     }
 431
 432     if (c->current_style)
 433     {
 434         release_font_cache( c->current_style->font_cache );
 435         c->current_style->font_cache = NULL;
 436     }
 437     c->current_style = s;
 438
 439     return;
 440 }
 441
 442 void ME_DestroyStyle(ME_Style *s)
 443 {
 444   list_remove( &s->entry );
 445   if (s->font_cache)
 446   {
 447     release_font_cache( s->font_cache );
 448     s->font_cache = NULL;
 449   }
 450   ScriptFreeCache( &s->script_cache );
 451   heap_free(s);
 452 }
 453
 454 void ME_AddRefStyle(ME_Style *s)
 455 {
 456   assert(s->nRefs>0); /* style with 0 references isn't supposed to exist */
 457   s->nRefs++;
 458   all_refs++;
 459   TRACE_(richedit_style)("ME_AddRefStyle %p, new refs=%d, total refs=%d\n", s, s->nRefs, all_refs);
 460 }
 461
 462 void ME_ReleaseStyle(ME_Style *s)
 463 {
 464   s->nRefs--;
 465   all_refs--;
 466   if (s->nRefs==0)
 467     TRACE_(richedit_style)("destroy style %p, total refs=%d\n", s, all_refs);
 468   else
 469     TRACE_(richedit_style)("release style %p, new refs=%d, total refs=%d\n", s, s->nRefs, all_refs);
 470   if (!all_refs) TRACE("all style references freed (good!)\n");
 471   assert(s->nRefs>=0);
 472   if (!s->nRefs)
 473     ME_DestroyStyle(s);
 474 }
 475
 476 ME_Style *style_get_insert_style( ME_TextEditor *editor, ME_Cursor *cursor )
 477 {
 478     ME_Style *style;
 479     ME_Cursor *from, *to;
 480     ME_Run *prev;
 481
 482     if (ME_IsSelection( editor ))
 483     {
 484         ME_GetSelection( editor, &from, &to );
 485         style = from->run->style;
 486     }
 487     else if (editor->pBuffer->pCharStyle)
 488         style = editor->pBuffer->pCharStyle;
 489     else if (!cursor->nOffset && (prev = run_prev( cursor->run )))
 490         style = prev->style;
 491     else
 492         style = cursor->run->style;
 493
 494     ME_AddRefStyle( style );
 495     return style;
 496 }
 497
 498 void ME_SaveTempStyle(ME_TextEditor *editor, ME_Style *style)
 499 {
 500   ME_Style *old_style = editor->pBuffer->pCharStyle;
 501
 502   if (style) ME_AddRefStyle( style );
 503   editor->pBuffer->pCharStyle = style;
 504   if (old_style) ME_ReleaseStyle( old_style );
 505 }
 506
 507 void ME_ClearTempStyle(ME_TextEditor *editor)
 508 {
 509   if (!editor->pBuffer->pCharStyle) return;
 510   ME_ReleaseStyle(editor->pBuffer->pCharStyle);
 511   editor->pBuffer->pCharStyle = NULL;
 512 }
 513
 514 /******************************************************************************
 515  * ME_SetDefaultCharFormat
 516  *
 517  * Applies a style change to the default character style.
 518  *
 519  * The default style is special in that it is mutable - runs
 520  * in the document that have this style should change if the
 521  * default style changes.  That means we need to fix up this
 522  * style manually.
 523  */
 524 void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod)
 525 {
 526     ME_Style *style, *def = editor->pBuffer->pDefaultStyle;
 527
 528     assert(mod->cbSize == sizeof(CHARFORMAT2W));
 529     style = ME_ApplyStyle(editor, def, mod);
 530     def->fmt = style->fmt;
 531     def->tm = style->tm;
 532     if (def->font_cache)
 533     {
 534         release_font_cache( def->font_cache );
 535         def->font_cache = NULL;
 536     }
 537     ScriptFreeCache( &def->script_cache );
 538     ME_ReleaseStyle( style );
 539     editor_mark_rewrap_all( editor );
 540 }