src/paragraph_pimpl.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "paragraph_pimpl.h"
  14 #include "LaTeXFeatures.h"
  15 #include "texrow.h"
  16 #include "language.h"
  17 #include "bufferparams.h"
  18 #include "encoding.h"
  19 #include "lyxrc.h"
  20 #include "debug.h"
  21
  22 #include "support/LAssert.h"
  23
  24 using lyx::pos_type;
  25 using std::endl;
  26 using std::ostream;
  27 using std::upper_bound;
  28 using std::lower_bound;
  29
  30 // Initialize static member.
  31 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  32 // Initialization of the counter for the paragraph id's,
  33 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  34
  35 namespace {
  36
  37 struct special_phrase {
  38         string phrase;
  39         string macro;
  40         bool builtin;
  41 };
  42
  43 special_phrase special_phrases[] = {
  44         { "LyX", "\\LyX{}", false },
  45         { "TeX", "\\TeX{}", true },
  46         { "LaTeX2e", "\\LaTeXe{}", true },
  47         { "LaTeX", "\\LaTeX{}", true },
  48 };
  49
  50 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  51
  52 } // namespace anon
  53
  54
  55 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  56         : owner_(owner)
  57 {
  58         inset_owner = 0;
  59         id_ = paragraph_id++;
  60 }
  61
  62
  63 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner, bool same_ids)
  64         : params(p.params), owner_(owner)
  65 {
  66         inset_owner = p.inset_owner;
  67         text = p.text;
  68         fontlist = p.fontlist;
  69         if (same_ids)
  70                 id_ = p.id_;
  71         else
  72                 id_ = paragraph_id++;
  73
  74         if (p.tracking())
  75                 changes_.reset(new Changes(*p.changes_.get()));
  76 }
  77
  78
  79 void Paragraph::Pimpl::clear()
  80 {
  81         text.clear();
  82 #warning changes ?
  83 }
  84
  85
  86 void Paragraph::Pimpl::setContentsFromPar(Paragraph const * par)
  87 {
  88         lyx::Assert(par);
  89         text = par->pimpl_->text;
  90         if (par->pimpl_->tracking()) {
  91                 changes_.reset(new Changes(*(par->pimpl_->changes_.get())));
  92         }
  93 }
  94
  95
  96 void Paragraph::Pimpl::trackChanges(Change::Type type)
  97 {
  98         if (tracking()) {
  99                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 100                 return;
 101         }
 102
 103         lyxerr[Debug::CHANGES] << "track changes for par "
 104                 << id_ << " type " << type << endl;
 105         changes_.reset(new Changes(type));
 106         changes_->set(type, 0, size());
 107 }
 108
 109
 110 void Paragraph::Pimpl::untrackChanges()
 111 {
 112         changes_.reset(0);
 113 }
 114
 115
 116 void Paragraph::Pimpl::cleanChanges()
 117 {
 118         // if we're not tracking, we don't want to reset...
 119         if (!tracking())
 120                 return;
 121
 122         changes_.reset(new Changes(Change::INSERTED));
 123         changes_->set(Change::INSERTED, 0, size());
 124 }
 125
 126
 127 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 128 {
 129         if (!tracking())
 130                 return false;
 131
 132         return changes_->isChange(start, end);
 133 }
 134
 135
 136 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 137 {
 138         if (!tracking())
 139                 return false;
 140
 141         return changes_->isChangeEdited(start, end);
 142 }
 143
 144
 145 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 146 {
 147         if (!tracking())
 148                 return;
 149
 150         changes_->set(type, pos);
 151 }
 152
 153
 154 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 155 {
 156         if (!tracking())
 157                 return Change::UNCHANGED;
 158
 159         return changes_->lookup(pos);
 160 }
 161
 162
 163 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 164 {
 165         if (!tracking())
 166                 return Change(Change::UNCHANGED);
 167
 168         return changes_->lookupFull(pos);
 169 }
 170
 171
 172 void Paragraph::Pimpl::markErased()
 173 {
 174         lyx::Assert(tracking());
 175
 176         // FIXME: we should actually remove INSERTED chars.
 177         // difficult because owning insettexts/tabulars need
 178         // to update themselves when rows etc. change
 179         changes_->set(Change::DELETED, 0, size());
 180         changes_->reset(Change::DELETED);
 181 }
 182
 183
 184 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 185 {
 186         if (!tracking())
 187                 return;
 188
 189         if (!size()) {
 190                 changes_.reset(new Changes(Change::UNCHANGED));
 191                 return;
 192         }
 193
 194         lyxerr << "acceptchange" << endl;
 195         pos_type i = start;
 196
 197         for (; i < end; ++i) {
 198                 switch (lookupChange(i)) {
 199                         case Change::UNCHANGED:
 200                                 break;
 201
 202                         case Change::INSERTED:
 203                                 changes_->set(Change::UNCHANGED, i);
 204                                 break;
 205
 206                         case Change::DELETED:
 207                                 eraseIntern(i);
 208                                 changes_->erase(i);
 209                                 --end;
 210                                 --i;
 211                                 break;
 212                 }
 213         }
 214
 215         lyxerr << "endacceptchange" << endl;
 216         changes_->reset(Change::UNCHANGED);
 217 }
 218
 219
 220 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 221 {
 222         if (!tracking())
 223                 return;
 224
 225         if (!size()) {
 226                 changes_.reset(new Changes(Change::UNCHANGED));
 227                 return;
 228         }
 229
 230         pos_type i = start;
 231
 232         for (; i < end; ++i) {
 233                 switch (lookupChange(i)) {
 234                         case Change::UNCHANGED:
 235                                 break;
 236
 237                         case Change::INSERTED:
 238                                 eraseIntern(i);
 239                                 changes_->erase(i);
 240                                 --end;
 241                                 --i;
 242                                 break;
 243
 244                         case Change::DELETED:
 245                                 changes_->set(Change::UNCHANGED, i);
 246                                 break;
 247                 }
 248         }
 249         changes_->reset(Change::UNCHANGED);
 250 }
 251
 252
 253 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 254 {
 255         // This is in the critical path for loading!
 256         pos_type const siz = size();
 257         lyx::Assert(pos <= siz);
 258         // This is stronger, and I belive that this is the assertion
 259         // that we should really use. (Lgb)
 260         //Assert(pos < size());
 261
 262         // Then this has no meaning. (Lgb)
 263         if (!siz || pos == siz)
 264                 return '\0';
 265
 266         return text[pos];
 267 }
 268
 269
 270 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 271 {
 272 #warning changes
 273         text[pos] = c;
 274 }
 275
 276
 277 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 278                                   LyXFont const & font, Change change)
 279 {
 280         lyx::Assert(pos <= size());
 281
 282         if (tracking()) {
 283                 changes_->record(change, pos);
 284         }
 285
 286         // This is actually very common when parsing buffers (and
 287         // maybe inserting ascii text)
 288         if (pos == size()) {
 289                 // when appending characters, no need to update tables
 290                 text.push_back(c);
 291                 owner_->setFont(pos, font);
 292                 return;
 293         }
 294
 295         text.insert(text.begin() + pos, c);
 296
 297         // Update the font table.
 298         FontTable search_font(pos, LyXFont());
 299         for (FontList::iterator it = lower_bound(fontlist.begin(),
 300                                                       fontlist.end(),
 301                                                       search_font, matchFT());
 302              it != fontlist.end(); ++it)
 303         {
 304                 it->pos(it->pos() + 1);
 305         }
 306
 307         // Update the insets
 308         owner_->insetlist.increasePosAfterPos(pos);
 309
 310         owner_->setFont(pos, font);
 311 }
 312
 313
 314 void Paragraph::Pimpl::insertInset(pos_type pos,
 315                                    Inset * inset, LyXFont const & font, Change change)
 316 {
 317         lyx::Assert(inset);
 318         lyx::Assert(pos <= size());
 319
 320         insertChar(pos, META_INSET, font, change);
 321         lyx::Assert(text[pos] == META_INSET);
 322
 323         // Add a new entry in the insetlist.
 324         owner_->insetlist.insert(inset, pos);
 325         inset->parOwner(owner_);
 326
 327         if (inset_owner)
 328                 inset->setOwner(inset_owner);
 329 }
 330
 331
 332 bool Paragraph::Pimpl::erasePos(pos_type pos)
 333 {
 334         lyx::Assert(pos < size());
 335
 336         if (tracking()) {
 337                 Change::Type changetype(changes_->lookup(pos));
 338                 changes_->record(Change(Change::DELETED), pos);
 339
 340                 // only allow the actual removal if it was /new/ text
 341                 if (changetype != Change::INSERTED) {
 342                         if (text[pos] == Paragraph::META_INSET) {
 343                                 Inset * i(owner_->getInset(pos));
 344                                 i->markErased();
 345                         }
 346                         return false;
 347                 }
 348         }
 349
 350         eraseIntern(pos);
 351         return true;
 352 }
 353
 354
 355 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 356 {
 357         // if it is an inset, delete the inset entry
 358         if (text[pos] == Paragraph::META_INSET) {
 359                 owner_->insetlist.erase(pos);
 360         }
 361
 362         text.erase(text.begin() + pos);
 363
 364         // Erase entries in the tables.
 365         FontTable search_font(pos, LyXFont());
 366
 367         FontList::iterator it =
 368                 lower_bound(fontlist.begin(),
 369                             fontlist.end(),
 370                             search_font, matchFT());
 371         if (it != fontlist.end() && it->pos() == pos &&
 372             (pos == 0 ||
 373              (it != fontlist.begin()
 374               && boost::prior(it)->pos() == pos - 1))) {
 375                 // If it is a multi-character font
 376                 // entry, we just make it smaller
 377                 // (see update below), otherwise we
 378                 // should delete it.
 379                 unsigned int const i = it - fontlist.begin();
 380                 fontlist.erase(fontlist.begin() + i);
 381                 it = fontlist.begin() + i;
 382                 if (i > 0 && i < fontlist.size() &&
 383                     fontlist[i - 1].font() == fontlist[i].font()) {
 384                         fontlist.erase(fontlist.begin() + i - 1);
 385                         it = fontlist.begin() + i - 1;
 386                 }
 387         }
 388
 389         // Update all other entries.
 390         FontList::iterator fend = fontlist.end();
 391         for (; it != fend; ++it)
 392                 it->pos(it->pos() - 1);
 393
 394         // Update the insetlist.
 395         owner_->insetlist.decreasePosAfterPos(pos);
 396 }
 397
 398
 399 void Paragraph::Pimpl::erase(pos_type pos)
 400 {
 401         erasePos(pos);
 402 }
 403
 404
 405 bool Paragraph::Pimpl::erase(pos_type start, pos_type end)
 406 {
 407         pos_type i = start;
 408         pos_type count = end - start;
 409         bool any_erased = false;
 410
 411         while (count) {
 412                 if (!erasePos(i)) {
 413                         ++i;
 414                 } else {
 415                         any_erased = true;
 416                 }
 417                 --count;
 418         }
 419         return any_erased;
 420 }
 421
 422
 423 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 424                                        pos_type const i,
 425                                        unsigned int & column,
 426                                        LyXFont const & font,
 427                                        LyXLayout const & style)
 428 {
 429         if (style.pass_thru) return;
 430         if (column > lyxrc.ascii_linelen
 431             && i
 432             && getChar(i - 1) != ' '
 433             && (i < size() - 1)
 434             // same in FreeSpacing mode
 435             && !style.free_spacing
 436                 && !owner_->isFreeSpacing()
 437             // In typewriter mode, we want to avoid
 438             // ! . ? : at the end of a line
 439             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 440                  && (getChar(i - 1) == '.'
 441                      || getChar(i - 1) == '?'
 442                      || getChar(i - 1) == ':'
 443                      || getChar(i - 1) == '!'))) {
 444                 os << '\n';
 445                 texrow.newline();
 446                 texrow.start(owner_, i + 1);
 447                 column = 0;
 448         } else if (style.free_spacing) {
 449                 os << '~';
 450         } else {
 451                 os << ' ';
 452         }
 453 }
 454
 455
 456 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 457 {
 458         pos_type const len = str.length();
 459
 460         // is the paragraph large enough?
 461         if (pos + len > size())
 462                 return false;
 463
 464         // does the wanted text start at point?
 465         for (string::size_type i = 0; i < str.length(); ++i) {
 466                 if (str[i] != text[pos + i])
 467                         return false;
 468         }
 469
 470         // is there a font change in middle of the word?
 471         FontList::const_iterator cit = fontlist.begin();
 472         FontList::const_iterator end = fontlist.end();
 473         for (; cit != end; ++cit) {
 474                 if (cit->pos() >= pos)
 475                         break;
 476         }
 477         if (cit != end && pos + len - 1 > cit->pos())
 478                 return false;
 479
 480         return true;
 481 }
 482
 483
 484 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 485                                              BufferParams const & bparams,
 486                                              ostream & os,
 487                                              TexRow & texrow,
 488                                              bool moving_arg,
 489                                              LyXFont & font,
 490                                              LyXFont & running_font,
 491                                              LyXFont & basefont,
 492                                              bool & open_font,
 493                                              Change::Type & running_change,
 494                                              LyXLayout const & style,
 495                                              pos_type & i,
 496                                              unsigned int & column,
 497                                              value_type const c)
 498 {
 499         if (style.pass_thru) {
 500                 if (c != '\0')
 501                         os << c;
 502                 return;
 503         }
 504
 505         // Two major modes:  LaTeX or plain
 506         // Handle here those cases common to both modes
 507         // and then split to handle the two modes separately.
 508         switch (c) {
 509         case Paragraph::META_INSET: {
 510                 Inset * inset = owner_->getInset(i);
 511
 512                 // FIXME: remove this check
 513                 if (!inset)
 514                         break;
 515
 516                 if (inset->isTextInset()) {
 517                         column += Changes::latexMarkChange(os, running_change,
 518                                 Change::UNCHANGED);
 519                         running_change = Change::UNCHANGED;
 520                 }
 521
 522                 bool close = false;
 523                 int const len = os.tellp();
 524                 //ostream::pos_type const len = os.tellp();
 525                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 526                      || inset->lyxCode() == Inset::MATH_CODE
 527                      || inset->lyxCode() == Inset::URL_CODE)
 528                     && running_font.isRightToLeft()) {
 529                         os << "\\L{";
 530                         close = true;
 531                 }
 532
 533 #ifdef WITH_WARNINGS
 534 #warning Bug: we can have an empty font change here!
 535 // if there has just been a font change, we are going to close it
 536 // right now, which means stupid latex code like \textsf{}. AFAIK,
 537 // this does not harm dvi output. A minor bug, thus (JMarc)
 538 #endif
 539                 // some insets cannot be inside a font change command
 540                 if (open_font && inset->noFontChange()) {
 541                         column +=running_font.
 542                                 latexWriteEndChanges(os,
 543                                                      basefont,
 544                                                      basefont);
 545                         open_font = false;
 546                         basefont = owner_->getLayoutFont(bparams);
 547                         running_font = basefont;
 548                 }
 549
 550                 int tmp = inset->latex(buf, os, moving_arg,
 551                                        style.free_spacing);
 552
 553                 if (close)
 554                         os << '}';
 555
 556                 if (tmp) {
 557                         for (int j = 0; j < tmp; ++j) {
 558                                 texrow.newline();
 559                         }
 560                         texrow.start(owner_, i + 1);
 561                         column = 0;
 562                 } else {
 563                         column += int(os.tellp()) - len;
 564                 }
 565         }
 566         break;
 567
 568         case Paragraph::META_NEWLINE:
 569                 if (open_font) {
 570                         column += running_font.latexWriteEndChanges(os,
 571                                                                     basefont,
 572                                                                     basefont);
 573                         open_font = false;
 574                 }
 575                 basefont = owner_->getLayoutFont(bparams);
 576                 running_font = basefont;
 577                 break;
 578
 579         default:
 580                 // And now for the special cases within each mode
 581
 582                 switch (c) {
 583                 case '\\':
 584                         os << "\\textbackslash{}";
 585                         column += 15;
 586                         break;
 587
 588                 case '±': case '²': case '³':
 589                 case '×': case '÷': case '¹':
 590                 case '¬': case 'µ':
 591                         if ((bparams.inputenc == "latin1" ||
 592                              bparams.inputenc == "latin9") ||
 593                             (bparams.inputenc == "auto" &&
 594                              (font.language()->encoding()->LatexName()
 595                               == "latin1" ||
 596                               font.language()->encoding()->LatexName()
 597                               == "latin9"))) {
 598                                 os << "\\ensuremath{"
 599                                    << c
 600                                    << '}';
 601                                 column += 13;
 602                         } else {
 603                                 os << c;
 604                         }
 605                         break;
 606
 607                 case '|': case '<': case '>':
 608                         // In T1 encoding, these characters exist
 609                         if (lyxrc.fontenc == "T1") {
 610                                 os << c;
 611                                 //... but we should avoid ligatures
 612                                 if ((c == '>' || c == '<')
 613                                     && i <= size() - 2
 614                                     && getChar(i + 1) == c) {
 615                                         //os << "\\textcompwordmark{}";
 616                                         // Jean-Marc, have a look at
 617                                         // this. I think this works
 618                                         // equally well:
 619                                         os << "\\,{}";
 620                                         // Lgb
 621                                         column += 19;
 622                                 }
 623                                 break;
 624                         }
 625                         // Typewriter font also has them
 626                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 627                                 os << c;
 628                                 break;
 629                         }
 630                         // Otherwise, we use what LaTeX
 631                         // provides us.
 632                         switch (c) {
 633                         case '<':
 634                                 os << "\\textless{}";
 635                                 column += 10;
 636                                 break;
 637                         case '>':
 638                                 os << "\\textgreater{}";
 639                                 column += 13;
 640                                 break;
 641                         case '|':
 642                                 os << "\\textbar{}";
 643                                 column += 9;
 644                                 break;
 645                         }
 646                         break;
 647
 648                 case '-': // "--" in Typewriter mode -> "-{}-"
 649                         if (i <= size() - 2
 650                             && getChar(i + 1) == '-'
 651                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 652                                 os << "-{}";
 653                                 column += 2;
 654                         } else {
 655                                 os << '-';
 656                         }
 657                         break;
 658
 659                 case '\"':
 660                         os << "\\char`\\\"{}";
 661                         column += 9;
 662                         break;
 663
 664                 case '£':
 665                         if (bparams.inputenc == "default") {
 666                                 os << "\\pounds{}";
 667                                 column += 8;
 668                         } else {
 669                                 os << c;
 670                         }
 671                         break;
 672
 673                 case '$': case '&':
 674                 case '%': case '#': case '{':
 675                 case '}': case '_':
 676                         os << '\\' << c;
 677                         column += 1;
 678                         break;
 679
 680                 case '~':
 681                         os << "\\textasciitilde{}";
 682                         column += 16;
 683                         break;
 684
 685                 case '^':
 686                         os << "\\textasciicircum{}";
 687                         column += 17;
 688                         break;
 689
 690                 case '*': case '[': case ']':
 691                         // avoid being mistaken for optional arguments
 692                         os << '{' << c << '}';
 693                         column += 2;
 694                         break;
 695
 696                 case ' ':
 697                         // Blanks are printed before font switching.
 698                         // Sure? I am not! (try nice-latex)
 699                         // I am sure it's correct. LyX might be smarter
 700                         // in the future, but for now, nothing wrong is
 701                         // written. (Asger)
 702                         break;
 703
 704                 default:
 705
 706                         // I assume this is hack treating typewriter as verbatim
 707                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 708                                 if (c != '\0') {
 709                                         os << c;
 710                                 }
 711                                 break;
 712                         }
 713
 714                         // LyX, LaTeX etc.
 715
 716                         // FIXME: if we have "LaTeX" with a font
 717                         // change in the middle (before the 'T', then
 718                         // the "TeX" part is still special cased.
 719                         // Really we should only operate this on
 720                         // "words" for some definition of word
 721
 722                         size_t pnr = 0;
 723
 724                         for (; pnr < phrases_nr; ++pnr) {
 725                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 726                                         os << special_phrases[pnr].macro;
 727                                         i += special_phrases[pnr].phrase.length() - 1;
 728                                         column += special_phrases[pnr].macro.length() - 1;
 729                                         break;
 730                                 }
 731                         }
 732
 733                         if (pnr == phrases_nr && c != '\0') {
 734                                 os << c;
 735                         }
 736                         break;
 737                 }
 738         }
 739 }
 740
 741
 742 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 743                                 LyXLayout const & layout) const
 744 {
 745         BufferParams const & bparams = features.bufferParams();
 746
 747         // check the params.
 748         if (params.lineTop() || params.lineBottom())
 749                 features.require("lyxline");
 750         if (!params.spacing().isDefault())
 751                 features.require("setspace");
 752
 753         // then the layouts
 754         features.useLayout(layout.name());
 755
 756         // then the fonts
 757         Language const * doc_language = bparams.language;
 758
 759         FontList::const_iterator fcit = fontlist.begin();
 760         FontList::const_iterator fend = fontlist.end();
 761         for (; fcit != fend; ++fcit) {
 762                 if (fcit->font().noun() == LyXFont::ON) {
 763                         lyxerr[Debug::LATEX] << "font.noun: "
 764                                              << fcit->font().noun()
 765                                              << endl;
 766                         features.require("noun");
 767                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 768                                              << fcit->font().stateText(0)
 769                                              << endl;
 770                 }
 771                 switch (fcit->font().color()) {
 772                 case LColor::none:
 773                 case LColor::inherit:
 774                 case LColor::ignore:
 775                         // probably we should put here all interface colors used for
 776                         // font displaying! For now I just add this ones I know of (Jug)
 777                 case LColor::latex:
 778                 case LColor::note:
 779                         break;
 780                 default:
 781                         features.require("color");
 782                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 783                                              << fcit->font().stateText(0)
 784                                              << endl;
 785                 }
 786
 787                 Language const * language = fcit->font().language();
 788                 if (language->babel() != doc_language->babel() &&
 789                     language != ignore_language &&
 790                     language != latex_language)
 791                 {
 792                         features.useLanguage(language);
 793                         lyxerr[Debug::LATEX] << "Found language "
 794                                              << language->babel() << endl;
 795                 }
 796         }
 797
 798         if (!params.leftIndent().zero())
 799                 features.require("ParagraphLeftIndent");
 800
 801         // then the insets
 802         InsetList::iterator icit = owner_->insetlist.begin();
 803         InsetList::iterator iend = owner_->insetlist.end();
 804         for (; icit != iend; ++icit) {
 805                 if (icit.getInset()) {
 806                         icit.getInset()->validate(features);
 807                         if (layout.needprotect &&
 808                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 809                                 features.require("NeedLyXFootnoteCode");
 810                 }
 811         }
 812
 813         // then the contents
 814         for (pos_type i = 0; i < size() ; ++i) {
 815                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 816                         if (!special_phrases[pnr].builtin
 817                             && isTextAt(special_phrases[pnr].phrase, i)) {
 818                                 features.require(special_phrases[pnr].phrase);
 819                                 break;
 820                         }
 821                 }
 822         }
 823 }
 824
 825
 826 LyXFont const Paragraph::Pimpl::realizeFont(LyXFont const & font,
 827                                             BufferParams const & bparams) const
 828 {
 829         LyXFont tmpfont(font);
 830
 831         // check for environment font information
 832         char par_depth = owner_->getDepth();
 833         Paragraph const * par = owner_;
 834         LyXTextClass const & tclass = bparams.getLyXTextClass();
 835
 836         while (par && par->getDepth() && !tmpfont.resolved()) {
 837                 par = par->outerHook();
 838                 if (par) {
 839                         tmpfont.realize(par->layout()->font);
 840                         par_depth = par->getDepth();
 841                 }
 842         }
 843
 844         tmpfont.realize(tclass.defaultfont());
 845         return tmpfont;
 846 }