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         lyx::Assert(pos <= size());
 256
 257         // This is stronger, and I belive that this is the assertion
 258         // that we should really use. (Lgb)
 259         // Rationale - getChar() is really text[]. getInset(getChar(size()))
 260         // makes no sense (crashes). The fact we return '\0' should be
 261         // evidence enough - jbl
 262         //lyx::Assert(pos < size());
 263
 264         if (lyxerr.debugging(Debug::LYXVC))
 265                 lyx::Assert(pos < size());
 266 #if 1
 267         // This is in the critical path for loading!
 268         pos_type const siz = size();
 269
 270         if (pos == siz) {
 271                 lyxerr << "getChar() on pos " << pos << " in par id "
 272                         << owner_->id() << " of size " << siz
 273                         << "  is a bit silly !" << endl;
 274                 return '\0';
 275         }
 276 #endif
 277         return text[pos];
 278 }
 279
 280
 281 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 282 {
 283 #warning changes
 284         text[pos] = c;
 285 }
 286
 287
 288 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 289                                   LyXFont const & font, Change change)
 290 {
 291         lyx::Assert(pos <= size());
 292
 293         if (tracking()) {
 294                 changes_->record(change, pos);
 295         }
 296
 297         // This is actually very common when parsing buffers (and
 298         // maybe inserting ascii text)
 299         if (pos == size()) {
 300                 // when appending characters, no need to update tables
 301                 text.push_back(c);
 302                 owner_->setFont(pos, font);
 303                 return;
 304         }
 305
 306         text.insert(text.begin() + pos, c);
 307
 308         // Update the font table.
 309         FontTable search_font(pos, LyXFont());
 310         for (FontList::iterator it = lower_bound(fontlist.begin(),
 311                                                       fontlist.end(),
 312                                                       search_font, matchFT());
 313              it != fontlist.end(); ++it)
 314         {
 315                 it->pos(it->pos() + 1);
 316         }
 317
 318         // Update the insets
 319         owner_->insetlist.increasePosAfterPos(pos);
 320
 321         owner_->setFont(pos, font);
 322 }
 323
 324
 325 void Paragraph::Pimpl::insertInset(pos_type pos,
 326                                    Inset * inset, LyXFont const & font, Change change)
 327 {
 328         lyx::Assert(inset);
 329         lyx::Assert(pos <= size());
 330
 331         insertChar(pos, META_INSET, font, change);
 332         lyx::Assert(text[pos] == META_INSET);
 333
 334         // Add a new entry in the insetlist.
 335         owner_->insetlist.insert(inset, pos);
 336         inset->parOwner(owner_);
 337
 338         if (inset_owner)
 339                 inset->setOwner(inset_owner);
 340 }
 341
 342
 343 bool Paragraph::Pimpl::erasePos(pos_type pos)
 344 {
 345         lyx::Assert(pos < size());
 346
 347         if (tracking()) {
 348                 Change::Type changetype(changes_->lookup(pos));
 349                 changes_->record(Change(Change::DELETED), pos);
 350
 351                 // only allow the actual removal if it was /new/ text
 352                 if (changetype != Change::INSERTED) {
 353                         if (text[pos] == Paragraph::META_INSET) {
 354                                 Inset * i(owner_->getInset(pos));
 355                                 i->markErased();
 356                         }
 357                         return false;
 358                 }
 359         }
 360
 361         eraseIntern(pos);
 362         return true;
 363 }
 364
 365
 366 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 367 {
 368         // if it is an inset, delete the inset entry
 369         if (text[pos] == Paragraph::META_INSET) {
 370                 owner_->insetlist.erase(pos);
 371         }
 372
 373         text.erase(text.begin() + pos);
 374
 375         // Erase entries in the tables.
 376         FontTable search_font(pos, LyXFont());
 377
 378         FontList::iterator it =
 379                 lower_bound(fontlist.begin(),
 380                             fontlist.end(),
 381                             search_font, matchFT());
 382         if (it != fontlist.end() && it->pos() == pos &&
 383             (pos == 0 ||
 384              (it != fontlist.begin()
 385               && boost::prior(it)->pos() == pos - 1))) {
 386                 // If it is a multi-character font
 387                 // entry, we just make it smaller
 388                 // (see update below), otherwise we
 389                 // should delete it.
 390                 unsigned int const i = it - fontlist.begin();
 391                 fontlist.erase(fontlist.begin() + i);
 392                 it = fontlist.begin() + i;
 393                 if (i > 0 && i < fontlist.size() &&
 394                     fontlist[i - 1].font() == fontlist[i].font()) {
 395                         fontlist.erase(fontlist.begin() + i - 1);
 396                         it = fontlist.begin() + i - 1;
 397                 }
 398         }
 399
 400         // Update all other entries.
 401         FontList::iterator fend = fontlist.end();
 402         for (; it != fend; ++it)
 403                 it->pos(it->pos() - 1);
 404
 405         // Update the insetlist.
 406         owner_->insetlist.decreasePosAfterPos(pos);
 407 }
 408
 409
 410 void Paragraph::Pimpl::erase(pos_type pos)
 411 {
 412         erasePos(pos);
 413 }
 414
 415
 416 bool Paragraph::Pimpl::erase(pos_type start, pos_type end)
 417 {
 418         pos_type i = start;
 419         pos_type count = end - start;
 420         bool any_erased = false;
 421
 422         while (count) {
 423                 if (!erasePos(i)) {
 424                         ++i;
 425                 } else {
 426                         any_erased = true;
 427                 }
 428                 --count;
 429         }
 430         return any_erased;
 431 }
 432
 433
 434 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 435                                        pos_type const i,
 436                                        unsigned int & column,
 437                                        LyXFont const & font,
 438                                        LyXLayout const & style)
 439 {
 440         if (style.pass_thru)
 441                 return;
 442
 443         if (column > lyxrc.ascii_linelen
 444             && i
 445             && getChar(i - 1) != ' '
 446             && (i < size() - 1)
 447             // same in FreeSpacing mode
 448             && !style.free_spacing
 449                 && !owner_->isFreeSpacing()
 450             // In typewriter mode, we want to avoid
 451             // ! . ? : at the end of a line
 452             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 453                  && (getChar(i - 1) == '.'
 454                      || getChar(i - 1) == '?'
 455                      || getChar(i - 1) == ':'
 456                      || getChar(i - 1) == '!'))) {
 457                 os << '\n';
 458                 texrow.newline();
 459                 texrow.start(owner_, i + 1);
 460                 column = 0;
 461         } else if (style.free_spacing) {
 462                 os << '~';
 463         } else {
 464                 os << ' ';
 465         }
 466 }
 467
 468
 469 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 470 {
 471         pos_type const len = str.length();
 472
 473         // is the paragraph large enough?
 474         if (pos + len > size())
 475                 return false;
 476
 477         // does the wanted text start at point?
 478         for (string::size_type i = 0; i < str.length(); ++i) {
 479                 if (str[i] != text[pos + i])
 480                         return false;
 481         }
 482
 483         // is there a font change in middle of the word?
 484         FontList::const_iterator cit = fontlist.begin();
 485         FontList::const_iterator end = fontlist.end();
 486         for (; cit != end; ++cit) {
 487                 if (cit->pos() >= pos)
 488                         break;
 489         }
 490         if (cit != end && pos + len - 1 > cit->pos())
 491                 return false;
 492
 493         return true;
 494 }
 495
 496
 497 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 498                                              BufferParams const & bparams,
 499                                              ostream & os,
 500                                              TexRow & texrow,
 501                                              bool moving_arg,
 502                                              LyXFont & font,
 503                                              LyXFont & running_font,
 504                                              LyXFont & basefont,
 505                                              bool & open_font,
 506                                              Change::Type & running_change,
 507                                              LyXLayout const & style,
 508                                              pos_type & i,
 509                                              unsigned int & column,
 510                                              value_type const c)
 511 {
 512         if (style.pass_thru) {
 513                 if (c != Paragraph::META_INSET) {
 514                         if (c != '\0')
 515                                 os << c;
 516                 } else {
 517                         Inset const * inset = owner_->getInset(i);
 518                         inset->ascii(buf, os, 0);
 519                 }
 520                 return;
 521         }
 522
 523         // Two major modes:  LaTeX or plain
 524         // Handle here those cases common to both modes
 525         // and then split to handle the two modes separately.
 526         switch (c) {
 527         case Paragraph::META_INSET: {
 528                 Inset * inset = owner_->getInset(i);
 529
 530                 // FIXME: remove this check
 531                 if (!inset)
 532                         break;
 533
 534                 // FIXME: move this to InsetNewline::latex
 535                 if (inset->lyxCode() == Inset::NEWLINE_CODE) {
 536                         // newlines are handled differently here than
 537                         // the default in simpleTeXSpecialChars().
 538                         if (!style.newline_allowed) {
 539                                 os << '\n';
 540                         } else {
 541                                 if (open_font) {
 542                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 543                                         open_font = false;
 544                                 }
 545                                 basefont = owner_->getLayoutFont(bparams);
 546                                 running_font = basefont;
 547
 548                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 549                                         os << '~';
 550
 551                                 if (moving_arg)
 552                                         os << "\\protect ";
 553
 554                                 os << "\\\\\n";
 555                         }
 556                         texrow.newline();
 557                         texrow.start(owner_, i + 1);
 558                         column = 0;
 559                         break;
 560                 }
 561
 562                 if (inset->isTextInset()) {
 563                         column += Changes::latexMarkChange(os, running_change,
 564                                 Change::UNCHANGED);
 565                         running_change = Change::UNCHANGED;
 566                 }
 567
 568                 bool close = false;
 569                 int const len = os.tellp();
 570                 //ostream::pos_type const len = os.tellp();
 571                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 572                      || inset->lyxCode() == Inset::MATH_CODE
 573                      || inset->lyxCode() == Inset::URL_CODE)
 574                     && running_font.isRightToLeft()) {
 575                         os << "\\L{";
 576                         close = true;
 577                 }
 578
 579 #ifdef WITH_WARNINGS
 580 #warning Bug: we can have an empty font change here!
 581 // if there has just been a font change, we are going to close it
 582 // right now, which means stupid latex code like \textsf{}. AFAIK,
 583 // this does not harm dvi output. A minor bug, thus (JMarc)
 584 #endif
 585                 // some insets cannot be inside a font change command
 586                 if (open_font && inset->noFontChange()) {
 587                         column +=running_font.
 588                                 latexWriteEndChanges(os,
 589                                                      basefont,
 590                                                      basefont);
 591                         open_font = false;
 592                         basefont = owner_->getLayoutFont(bparams);
 593                         running_font = basefont;
 594                 }
 595
 596                 int tmp = inset->latex(buf, os, moving_arg,
 597                                        style.free_spacing);
 598
 599                 if (close)
 600                         os << '}';
 601
 602                 if (tmp) {
 603                         for (int j = 0; j < tmp; ++j) {
 604                                 texrow.newline();
 605                         }
 606                         texrow.start(owner_, i + 1);
 607                         column = 0;
 608                 } else {
 609                         column += int(os.tellp()) - len;
 610                 }
 611         }
 612         break;
 613
 614         default:
 615                 // And now for the special cases within each mode
 616
 617                 switch (c) {
 618                 case '\\':
 619                         os << "\\textbackslash{}";
 620                         column += 15;
 621                         break;
 622
 623                 case '±': case '²': case '³':
 624                 case '×': case '÷': case '¹':
 625                 case '¬': case 'µ':
 626                         if ((bparams.inputenc == "latin1" ||
 627                              bparams.inputenc == "latin9") ||
 628                             (bparams.inputenc == "auto" &&
 629                              (font.language()->encoding()->LatexName()
 630                               == "latin1" ||
 631                               font.language()->encoding()->LatexName()
 632                               == "latin9"))) {
 633                                 os << "\\ensuremath{"
 634                                    << c
 635                                    << '}';
 636                                 column += 13;
 637                         } else {
 638                                 os << c;
 639                         }
 640                         break;
 641
 642                 case '|': case '<': case '>':
 643                         // In T1 encoding, these characters exist
 644                         if (lyxrc.fontenc == "T1") {
 645                                 os << c;
 646                                 //... but we should avoid ligatures
 647                                 if ((c == '>' || c == '<')
 648                                     && i <= size() - 2
 649                                     && getChar(i + 1) == c) {
 650                                         //os << "\\textcompwordmark{}";
 651                                         // Jean-Marc, have a look at
 652                                         // this. I think this works
 653                                         // equally well:
 654                                         os << "\\,{}";
 655                                         // Lgb
 656                                         column += 19;
 657                                 }
 658                                 break;
 659                         }
 660                         // Typewriter font also has them
 661                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 662                                 os << c;
 663                                 break;
 664                         }
 665                         // Otherwise, we use what LaTeX
 666                         // provides us.
 667                         switch (c) {
 668                         case '<':
 669                                 os << "\\textless{}";
 670                                 column += 10;
 671                                 break;
 672                         case '>':
 673                                 os << "\\textgreater{}";
 674                                 column += 13;
 675                                 break;
 676                         case '|':
 677                                 os << "\\textbar{}";
 678                                 column += 9;
 679                                 break;
 680                         }
 681                         break;
 682
 683                 case '-': // "--" in Typewriter mode -> "-{}-"
 684                         if (i <= size() - 2
 685                             && getChar(i + 1) == '-'
 686                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 687                                 os << "-{}";
 688                                 column += 2;
 689                         } else {
 690                                 os << '-';
 691                         }
 692                         break;
 693
 694                 case '\"':
 695                         os << "\\char`\\\"{}";
 696                         column += 9;
 697                         break;
 698
 699                 case '£':
 700                         if (bparams.inputenc == "default") {
 701                                 os << "\\pounds{}";
 702                                 column += 8;
 703                         } else {
 704                                 os << c;
 705                         }
 706                         break;
 707
 708                 case '$': case '&':
 709                 case '%': case '#': case '{':
 710                 case '}': case '_':
 711                         os << '\\' << c;
 712                         column += 1;
 713                         break;
 714
 715                 case '~':
 716                         os << "\\textasciitilde{}";
 717                         column += 16;
 718                         break;
 719
 720                 case '^':
 721                         os << "\\textasciicircum{}";
 722                         column += 17;
 723                         break;
 724
 725                 case '*': case '[': case ']':
 726                         // avoid being mistaken for optional arguments
 727                         os << '{' << c << '}';
 728                         column += 2;
 729                         break;
 730
 731                 case ' ':
 732                         // Blanks are printed before font switching.
 733                         // Sure? I am not! (try nice-latex)
 734                         // I am sure it's correct. LyX might be smarter
 735                         // in the future, but for now, nothing wrong is
 736                         // written. (Asger)
 737                         break;
 738
 739                 default:
 740
 741                         // I assume this is hack treating typewriter as verbatim
 742                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 743                                 if (c != '\0') {
 744                                         os << c;
 745                                 }
 746                                 break;
 747                         }
 748
 749                         // LyX, LaTeX etc.
 750
 751                         // FIXME: if we have "LaTeX" with a font
 752                         // change in the middle (before the 'T', then
 753                         // the "TeX" part is still special cased.
 754                         // Really we should only operate this on
 755                         // "words" for some definition of word
 756
 757                         size_t pnr = 0;
 758
 759                         for (; pnr < phrases_nr; ++pnr) {
 760                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 761                                         os << special_phrases[pnr].macro;
 762                                         i += special_phrases[pnr].phrase.length() - 1;
 763                                         column += special_phrases[pnr].macro.length() - 1;
 764                                         break;
 765                                 }
 766                         }
 767
 768                         if (pnr == phrases_nr && c != '\0') {
 769                                 os << c;
 770                         }
 771                         break;
 772                 }
 773         }
 774 }
 775
 776
 777 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 778                                 LyXLayout const & layout) const
 779 {
 780         BufferParams const & bparams = features.bufferParams();
 781
 782         // check the params.
 783         if (params.lineTop() || params.lineBottom())
 784                 features.require("lyxline");
 785         if (!params.spacing().isDefault())
 786                 features.require("setspace");
 787
 788         // then the layouts
 789         features.useLayout(layout.name());
 790
 791         // then the fonts
 792         Language const * doc_language = bparams.language;
 793
 794         FontList::const_iterator fcit = fontlist.begin();
 795         FontList::const_iterator fend = fontlist.end();
 796         for (; fcit != fend; ++fcit) {
 797                 if (fcit->font().noun() == LyXFont::ON) {
 798                         lyxerr[Debug::LATEX] << "font.noun: "
 799                                              << fcit->font().noun()
 800                                              << endl;
 801                         features.require("noun");
 802                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 803                                              << fcit->font().stateText(0)
 804                                              << endl;
 805                 }
 806                 switch (fcit->font().color()) {
 807                 case LColor::none:
 808                 case LColor::inherit:
 809                 case LColor::ignore:
 810                         // probably we should put here all interface colors used for
 811                         // font displaying! For now I just add this ones I know of (Jug)
 812                 case LColor::latex:
 813                 case LColor::note:
 814                         break;
 815                 default:
 816                         features.require("color");
 817                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 818                                              << fcit->font().stateText(0)
 819                                              << endl;
 820                 }
 821
 822                 Language const * language = fcit->font().language();
 823                 if (language->babel() != doc_language->babel() &&
 824                     language != ignore_language &&
 825                     language != latex_language)
 826                 {
 827                         features.useLanguage(language);
 828                         lyxerr[Debug::LATEX] << "Found language "
 829                                              << language->babel() << endl;
 830                 }
 831         }
 832
 833         if (!params.leftIndent().zero())
 834                 features.require("ParagraphLeftIndent");
 835
 836         // then the insets
 837         InsetList::iterator icit = owner_->insetlist.begin();
 838         InsetList::iterator iend = owner_->insetlist.end();
 839         for (; icit != iend; ++icit) {
 840                 if (icit.getInset()) {
 841                         icit.getInset()->validate(features);
 842                         if (layout.needprotect &&
 843                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 844                                 features.require("NeedLyXFootnoteCode");
 845                 }
 846         }
 847
 848         // then the contents
 849         for (pos_type i = 0; i < size() ; ++i) {
 850                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 851                         if (!special_phrases[pnr].builtin
 852                             && isTextAt(special_phrases[pnr].phrase, i)) {
 853                                 features.require(special_phrases[pnr].phrase);
 854                                 break;
 855                         }
 856                 }
 857         }
 858 }
 859
 860
 861 LyXFont const Paragraph::Pimpl::realizeFont(LyXFont const & font,
 862                                             BufferParams const & bparams) const
 863 {
 864         LyXFont tmpfont(font);
 865
 866         // check for environment font information
 867         char par_depth = owner_->getDepth();
 868         Paragraph const * par = owner_;
 869         LyXTextClass const & tclass = bparams.getLyXTextClass();
 870
 871         while (par && par->getDepth() && !tmpfont.resolved()) {
 872                 par = par->outerHook();
 873                 if (par) {
 874                         tmpfont.realize(par->layout()->font);
 875                         par_depth = par->getDepth();
 876                 }
 877         }
 878
 879         tmpfont.realize(tclass.defaultfont());
 880         return tmpfont;
 881 }