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 #include "paragraph_funcs.h"
  22
  23 #include "support/LAssert.h"
  24
  25 using lyx::pos_type;
  26 using std::endl;
  27 using std::ostream;
  28 using std::upper_bound;
  29 using std::lower_bound;
  30
  31 // Initialize static member.
  32 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  33 // Initialization of the counter for the paragraph id's,
  34 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  35
  36 namespace {
  37
  38 struct special_phrase {
  39         string phrase;
  40         string macro;
  41         bool builtin;
  42 };
  43
  44 special_phrase special_phrases[] = {
  45         { "LyX", "\\LyX{}", false },
  46         { "TeX", "\\TeX{}", true },
  47         { "LaTeX2e", "\\LaTeXe{}", true },
  48         { "LaTeX", "\\LaTeX{}", true },
  49 };
  50
  51 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  52
  53 } // namespace anon
  54
  55
  56 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  57         : owner_(owner)
  58 {
  59         inset_owner = 0;
  60         id_ = paragraph_id++;
  61 }
  62
  63
  64 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner, bool same_ids)
  65         : params(p.params), owner_(owner)
  66 {
  67         inset_owner = p.inset_owner;
  68         text = p.text;
  69         fontlist = p.fontlist;
  70         if (same_ids)
  71                 id_ = p.id_;
  72         else
  73                 id_ = paragraph_id++;
  74
  75         if (p.tracking())
  76                 changes_.reset(new Changes(*p.changes_.get()));
  77 }
  78
  79
  80 void Paragraph::Pimpl::clear()
  81 {
  82         text.clear();
  83 #warning changes ?
  84 }
  85
  86
  87 void Paragraph::Pimpl::setContentsFromPar(Paragraph const * par)
  88 {
  89         lyx::Assert(par);
  90         text = par->pimpl_->text;
  91         if (par->pimpl_->tracking()) {
  92                 changes_.reset(new Changes(*(par->pimpl_->changes_.get())));
  93         }
  94 }
  95
  96
  97 void Paragraph::Pimpl::trackChanges(Change::Type type)
  98 {
  99         if (tracking()) {
 100                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 101                 return;
 102         }
 103
 104         lyxerr[Debug::CHANGES] << "track changes for par "
 105                 << id_ << " type " << type << endl;
 106         changes_.reset(new Changes(type));
 107         changes_->set(type, 0, size());
 108 }
 109
 110
 111 void Paragraph::Pimpl::untrackChanges()
 112 {
 113         changes_.reset(0);
 114 }
 115
 116
 117 void Paragraph::Pimpl::cleanChanges()
 118 {
 119         // if we're not tracking, we don't want to reset...
 120         if (!tracking())
 121                 return;
 122
 123         changes_.reset(new Changes(Change::INSERTED));
 124         changes_->set(Change::INSERTED, 0, size());
 125 }
 126
 127
 128 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 129 {
 130         if (!tracking())
 131                 return false;
 132
 133         return changes_->isChange(start, end);
 134 }
 135
 136
 137 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 138 {
 139         if (!tracking())
 140                 return false;
 141
 142         return changes_->isChangeEdited(start, end);
 143 }
 144
 145
 146 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 147 {
 148         if (!tracking())
 149                 return;
 150
 151         changes_->set(type, pos);
 152 }
 153
 154
 155 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 156 {
 157         if (!tracking())
 158                 return Change::UNCHANGED;
 159
 160         return changes_->lookup(pos);
 161 }
 162
 163
 164 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 165 {
 166         if (!tracking())
 167                 return Change(Change::UNCHANGED);
 168
 169         return changes_->lookupFull(pos);
 170 }
 171
 172
 173 void Paragraph::Pimpl::markErased()
 174 {
 175         lyx::Assert(tracking());
 176
 177         // FIXME: we should actually remove INSERTED chars.
 178         // difficult because owning insettexts/tabulars need
 179         // to update themselves when rows etc. change
 180         changes_->set(Change::DELETED, 0, size());
 181         changes_->reset(Change::DELETED);
 182 }
 183
 184
 185 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 186 {
 187         if (!tracking())
 188                 return;
 189
 190         if (!size()) {
 191                 changes_.reset(new Changes(Change::UNCHANGED));
 192                 return;
 193         }
 194
 195         lyxerr << "acceptchange" << endl;
 196         pos_type i = start;
 197
 198         for (; i < end; ++i) {
 199                 switch (lookupChange(i)) {
 200                         case Change::UNCHANGED:
 201                                 break;
 202
 203                         case Change::INSERTED:
 204                                 changes_->set(Change::UNCHANGED, i);
 205                                 break;
 206
 207                         case Change::DELETED:
 208                                 eraseIntern(i);
 209                                 changes_->erase(i);
 210                                 --end;
 211                                 --i;
 212                                 break;
 213                 }
 214         }
 215
 216         lyxerr << "endacceptchange" << endl;
 217         changes_->reset(Change::UNCHANGED);
 218 }
 219
 220
 221 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 222 {
 223         if (!tracking())
 224                 return;
 225
 226         if (!size()) {
 227                 changes_.reset(new Changes(Change::UNCHANGED));
 228                 return;
 229         }
 230
 231         pos_type i = start;
 232
 233         for (; i < end; ++i) {
 234                 switch (lookupChange(i)) {
 235                         case Change::UNCHANGED:
 236                                 break;
 237
 238                         case Change::INSERTED:
 239                                 eraseIntern(i);
 240                                 changes_->erase(i);
 241                                 --end;
 242                                 --i;
 243                                 break;
 244
 245                         case Change::DELETED:
 246                                 changes_->set(Change::UNCHANGED, i);
 247                                 break;
 248                 }
 249         }
 250         changes_->reset(Change::UNCHANGED);
 251 }
 252
 253
 254 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 255 {
 256 #if 1
 257         // This is in the critical path for loading!
 258         pos_type const siz = size();
 259
 260         lyx::Assert(pos <= siz);
 261
 262         if (pos == siz) {
 263                 lyxerr << "getChar() on pos " << pos << " in par id "
 264                        << owner_->id() << " of size " << siz
 265                        << "  is a bit silly !" << endl;
 266                 return '\0';
 267         }
 268
 269         return text[pos];
 270 #else
 271         lyx::Assert(pos < size());
 272         return text[pos];
 273 #endif
 274 }
 275
 276
 277 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 278 {
 279 #warning changes
 280         text[pos] = c;
 281 }
 282
 283
 284 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 285                                   LyXFont const & font, Change change)
 286 {
 287         lyx::Assert(pos <= size());
 288
 289         if (tracking()) {
 290                 changes_->record(change, pos);
 291         }
 292
 293         // This is actually very common when parsing buffers (and
 294         // maybe inserting ascii text)
 295         if (pos == size()) {
 296                 // when appending characters, no need to update tables
 297                 text.push_back(c);
 298                 owner_->setFont(pos, font);
 299                 return;
 300         }
 301
 302         text.insert(text.begin() + pos, c);
 303
 304         // Update the font table.
 305         FontTable search_font(pos, LyXFont());
 306         for (FontList::iterator it = lower_bound(fontlist.begin(),
 307                                                       fontlist.end(),
 308                                                       search_font, matchFT());
 309              it != fontlist.end(); ++it)
 310         {
 311                 it->pos(it->pos() + 1);
 312         }
 313
 314         // Update the insets
 315         owner_->insetlist.increasePosAfterPos(pos);
 316
 317         owner_->setFont(pos, font);
 318 }
 319
 320
 321 void Paragraph::Pimpl::insertInset(pos_type pos,
 322                                    Inset * inset, LyXFont const & font, Change change)
 323 {
 324         lyx::Assert(inset);
 325         lyx::Assert(pos <= size());
 326
 327         insertChar(pos, META_INSET, font, change);
 328         lyx::Assert(text[pos] == META_INSET);
 329
 330         // Add a new entry in the insetlist.
 331         owner_->insetlist.insert(inset, pos);
 332         inset->parOwner(owner_);
 333
 334         if (inset_owner)
 335                 inset->setOwner(inset_owner);
 336 }
 337
 338
 339 bool Paragraph::Pimpl::erasePos(pos_type pos)
 340 {
 341         lyx::Assert(pos < size());
 342
 343         if (tracking()) {
 344                 Change::Type changetype(changes_->lookup(pos));
 345                 changes_->record(Change(Change::DELETED), pos);
 346
 347                 // only allow the actual removal if it was /new/ text
 348                 if (changetype != Change::INSERTED) {
 349                         if (text[pos] == Paragraph::META_INSET) {
 350                                 Inset * i(owner_->getInset(pos));
 351                                 i->markErased();
 352                         }
 353                         return false;
 354                 }
 355         }
 356
 357         eraseIntern(pos);
 358         return true;
 359 }
 360
 361
 362 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 363 {
 364         // if it is an inset, delete the inset entry
 365         if (text[pos] == Paragraph::META_INSET) {
 366                 owner_->insetlist.erase(pos);
 367         }
 368
 369         text.erase(text.begin() + pos);
 370
 371         // Erase entries in the tables.
 372         FontTable search_font(pos, LyXFont());
 373
 374         FontList::iterator it =
 375                 lower_bound(fontlist.begin(),
 376                             fontlist.end(),
 377                             search_font, matchFT());
 378         if (it != fontlist.end() && it->pos() == pos &&
 379             (pos == 0 ||
 380              (it != fontlist.begin()
 381               && boost::prior(it)->pos() == pos - 1))) {
 382                 // If it is a multi-character font
 383                 // entry, we just make it smaller
 384                 // (see update below), otherwise we
 385                 // should delete it.
 386                 unsigned int const i = it - fontlist.begin();
 387                 fontlist.erase(fontlist.begin() + i);
 388                 it = fontlist.begin() + i;
 389                 if (i > 0 && i < fontlist.size() &&
 390                     fontlist[i - 1].font() == fontlist[i].font()) {
 391                         fontlist.erase(fontlist.begin() + i - 1);
 392                         it = fontlist.begin() + i - 1;
 393                 }
 394         }
 395
 396         // Update all other entries.
 397         FontList::iterator fend = fontlist.end();
 398         for (; it != fend; ++it)
 399                 it->pos(it->pos() - 1);
 400
 401         // Update the insetlist.
 402         owner_->insetlist.decreasePosAfterPos(pos);
 403 }
 404
 405
 406 void Paragraph::Pimpl::erase(pos_type pos)
 407 {
 408         erasePos(pos);
 409 }
 410
 411
 412 bool Paragraph::Pimpl::erase(pos_type start, pos_type end)
 413 {
 414         pos_type i = start;
 415         pos_type count = end - start;
 416         bool any_erased = false;
 417
 418         while (count) {
 419                 if (!erasePos(i)) {
 420                         ++i;
 421                 } else {
 422                         any_erased = true;
 423                 }
 424                 --count;
 425         }
 426         return any_erased;
 427 }
 428
 429
 430 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 431                                        pos_type const i,
 432                                        unsigned int & column,
 433                                        LyXFont const & font,
 434                                        LyXLayout const & style)
 435 {
 436         if (style.pass_thru)
 437                 return;
 438
 439         if (column > lyxrc.ascii_linelen
 440             && i
 441             && getChar(i - 1) != ' '
 442             && (i < size() - 1)
 443             // same in FreeSpacing mode
 444             && !style.free_spacing
 445                 && !owner_->isFreeSpacing()
 446             // In typewriter mode, we want to avoid
 447             // ! . ? : at the end of a line
 448             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 449                  && (getChar(i - 1) == '.'
 450                      || getChar(i - 1) == '?'
 451                      || getChar(i - 1) == ':'
 452                      || getChar(i - 1) == '!'))) {
 453                 os << '\n';
 454                 texrow.newline();
 455                 texrow.start(owner_, i + 1);
 456                 column = 0;
 457         } else if (style.free_spacing) {
 458                 os << '~';
 459         } else {
 460                 os << ' ';
 461         }
 462 }
 463
 464
 465 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 466 {
 467         pos_type const len = str.length();
 468
 469         // is the paragraph large enough?
 470         if (pos + len > size())
 471                 return false;
 472
 473         // does the wanted text start at point?
 474         for (string::size_type i = 0; i < str.length(); ++i) {
 475                 if (str[i] != text[pos + i])
 476                         return false;
 477         }
 478
 479         // is there a font change in middle of the word?
 480         FontList::const_iterator cit = fontlist.begin();
 481         FontList::const_iterator end = fontlist.end();
 482         for (; cit != end; ++cit) {
 483                 if (cit->pos() >= pos)
 484                         break;
 485         }
 486         if (cit != end && pos + len - 1 > cit->pos())
 487                 return false;
 488
 489         return true;
 490 }
 491
 492
 493 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 494                                              BufferParams const & bparams,
 495                                              ostream & os,
 496                                              TexRow & texrow,
 497                                              bool moving_arg,
 498                                              LyXFont & font,
 499                                              LyXFont & running_font,
 500                                              LyXFont & basefont,
 501                                              bool & open_font,
 502                                              Change::Type & running_change,
 503                                              LyXLayout const & style,
 504                                              pos_type & i,
 505                                              unsigned int & column,
 506                                              value_type const c)
 507 {
 508         if (style.pass_thru) {
 509                 if (c != Paragraph::META_INSET) {
 510                         if (c != '\0')
 511                                 os << c;
 512                 } else {
 513                         Inset const * inset = owner_->getInset(i);
 514                         inset->ascii(buf, os, 0);
 515                 }
 516                 return;
 517         }
 518
 519         // Two major modes:  LaTeX or plain
 520         // Handle here those cases common to both modes
 521         // and then split to handle the two modes separately.
 522         switch (c) {
 523         case Paragraph::META_INSET: {
 524                 Inset * inset = owner_->getInset(i);
 525
 526                 // FIXME: remove this check
 527                 if (!inset)
 528                         break;
 529
 530                 // FIXME: move this to InsetNewline::latex
 531                 if (inset->lyxCode() == Inset::NEWLINE_CODE) {
 532                         // newlines are handled differently here than
 533                         // the default in simpleTeXSpecialChars().
 534                         if (!style.newline_allowed) {
 535                                 os << '\n';
 536                         } else {
 537                                 if (open_font) {
 538                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 539                                         open_font = false;
 540                                 }
 541                                 basefont = owner_->getLayoutFont(bparams);
 542                                 running_font = basefont;
 543
 544                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 545                                         os << '~';
 546
 547                                 if (moving_arg)
 548                                         os << "\\protect ";
 549
 550                                 os << "\\\\\n";
 551                         }
 552                         texrow.newline();
 553                         texrow.start(owner_, i + 1);
 554                         column = 0;
 555                         break;
 556                 }
 557
 558                 if (inset->isTextInset()) {
 559                         column += Changes::latexMarkChange(os, running_change,
 560                                 Change::UNCHANGED);
 561                         running_change = Change::UNCHANGED;
 562                 }
 563
 564                 bool close = false;
 565                 int const len = os.tellp();
 566                 //ostream::pos_type const len = os.tellp();
 567                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 568                      || inset->lyxCode() == Inset::MATH_CODE
 569                      || inset->lyxCode() == Inset::URL_CODE)
 570                     && running_font.isRightToLeft()) {
 571                         os << "\\L{";
 572                         close = true;
 573                 }
 574
 575 #ifdef WITH_WARNINGS
 576 #warning Bug: we can have an empty font change here!
 577 // if there has just been a font change, we are going to close it
 578 // right now, which means stupid latex code like \textsf{}. AFAIK,
 579 // this does not harm dvi output. A minor bug, thus (JMarc)
 580 #endif
 581                 // some insets cannot be inside a font change command
 582                 if (open_font && inset->noFontChange()) {
 583                         column +=running_font.
 584                                 latexWriteEndChanges(os,
 585                                                      basefont,
 586                                                      basefont);
 587                         open_font = false;
 588                         basefont = owner_->getLayoutFont(bparams);
 589                         running_font = basefont;
 590                 }
 591
 592                 int tmp = inset->latex(buf, os, moving_arg,
 593                                        style.free_spacing);
 594
 595                 if (close)
 596                         os << '}';
 597
 598                 if (tmp) {
 599                         for (int j = 0; j < tmp; ++j) {
 600                                 texrow.newline();
 601                         }
 602                         texrow.start(owner_, i + 1);
 603                         column = 0;
 604                 } else {
 605                         column += int(os.tellp()) - len;
 606                 }
 607         }
 608         break;
 609
 610         default:
 611                 // And now for the special cases within each mode
 612
 613                 switch (c) {
 614                 case '\\':
 615                         os << "\\textbackslash{}";
 616                         column += 15;
 617                         break;
 618
 619                 case '±': case '²': case '³':
 620                 case '×': case '÷': case '¹':
 621                 case '¬': case 'µ':
 622                         if ((bparams.inputenc == "latin1" ||
 623                              bparams.inputenc == "latin9") ||
 624                             (bparams.inputenc == "auto" &&
 625                              (font.language()->encoding()->LatexName()
 626                               == "latin1" ||
 627                               font.language()->encoding()->LatexName()
 628                               == "latin9"))) {
 629                                 os << "\\ensuremath{"
 630                                    << c
 631                                    << '}';
 632                                 column += 13;
 633                         } else {
 634                                 os << c;
 635                         }
 636                         break;
 637
 638                 case '|': case '<': case '>':
 639                         // In T1 encoding, these characters exist
 640                         if (lyxrc.fontenc == "T1") {
 641                                 os << c;
 642                                 //... but we should avoid ligatures
 643                                 if ((c == '>' || c == '<')
 644                                     && i <= size() - 2
 645                                     && getChar(i + 1) == c) {
 646                                         //os << "\\textcompwordmark{}";
 647                                         // Jean-Marc, have a look at
 648                                         // this. I think this works
 649                                         // equally well:
 650                                         os << "\\,{}";
 651                                         // Lgb
 652                                         column += 19;
 653                                 }
 654                                 break;
 655                         }
 656                         // Typewriter font also has them
 657                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 658                                 os << c;
 659                                 break;
 660                         }
 661                         // Otherwise, we use what LaTeX
 662                         // provides us.
 663                         switch (c) {
 664                         case '<':
 665                                 os << "\\textless{}";
 666                                 column += 10;
 667                                 break;
 668                         case '>':
 669                                 os << "\\textgreater{}";
 670                                 column += 13;
 671                                 break;
 672                         case '|':
 673                                 os << "\\textbar{}";
 674                                 column += 9;
 675                                 break;
 676                         }
 677                         break;
 678
 679                 case '-': // "--" in Typewriter mode -> "-{}-"
 680                         if (i <= size() - 2
 681                             && getChar(i + 1) == '-'
 682                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 683                                 os << "-{}";
 684                                 column += 2;
 685                         } else {
 686                                 os << '-';
 687                         }
 688                         break;
 689
 690                 case '\"':
 691                         os << "\\char`\\\"{}";
 692                         column += 9;
 693                         break;
 694
 695                 case '£':
 696                         if (bparams.inputenc == "default") {
 697                                 os << "\\pounds{}";
 698                                 column += 8;
 699                         } else {
 700                                 os << c;
 701                         }
 702                         break;
 703
 704                 case '$': case '&':
 705                 case '%': case '#': case '{':
 706                 case '}': case '_':
 707                         os << '\\' << c;
 708                         column += 1;
 709                         break;
 710
 711                 case '~':
 712                         os << "\\textasciitilde{}";
 713                         column += 16;
 714                         break;
 715
 716                 case '^':
 717                         os << "\\textasciicircum{}";
 718                         column += 17;
 719                         break;
 720
 721                 case '*': case '[': case ']':
 722                         // avoid being mistaken for optional arguments
 723                         os << '{' << c << '}';
 724                         column += 2;
 725                         break;
 726
 727                 case ' ':
 728                         // Blanks are printed before font switching.
 729                         // Sure? I am not! (try nice-latex)
 730                         // I am sure it's correct. LyX might be smarter
 731                         // in the future, but for now, nothing wrong is
 732                         // written. (Asger)
 733                         break;
 734
 735                 default:
 736
 737                         // I assume this is hack treating typewriter as verbatim
 738                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 739                                 if (c != '\0') {
 740                                         os << c;
 741                                 }
 742                                 break;
 743                         }
 744
 745                         // LyX, LaTeX etc.
 746
 747                         // FIXME: if we have "LaTeX" with a font
 748                         // change in the middle (before the 'T', then
 749                         // the "TeX" part is still special cased.
 750                         // Really we should only operate this on
 751                         // "words" for some definition of word
 752
 753                         size_t pnr = 0;
 754
 755                         for (; pnr < phrases_nr; ++pnr) {
 756                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 757                                         os << special_phrases[pnr].macro;
 758                                         i += special_phrases[pnr].phrase.length() - 1;
 759                                         column += special_phrases[pnr].macro.length() - 1;
 760                                         break;
 761                                 }
 762                         }
 763
 764                         if (pnr == phrases_nr && c != '\0') {
 765                                 os << c;
 766                         }
 767                         break;
 768                 }
 769         }
 770 }
 771
 772
 773 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 774                                 LyXLayout const & layout) const
 775 {
 776         BufferParams const & bparams = features.bufferParams();
 777
 778         // check the params.
 779         if (params.lineTop() || params.lineBottom())
 780                 features.require("lyxline");
 781         if (!params.spacing().isDefault())
 782                 features.require("setspace");
 783
 784         // then the layouts
 785         features.useLayout(layout.name());
 786
 787         // then the fonts
 788         Language const * doc_language = bparams.language;
 789
 790         FontList::const_iterator fcit = fontlist.begin();
 791         FontList::const_iterator fend = fontlist.end();
 792         for (; fcit != fend; ++fcit) {
 793                 if (fcit->font().noun() == LyXFont::ON) {
 794                         lyxerr[Debug::LATEX] << "font.noun: "
 795                                              << fcit->font().noun()
 796                                              << endl;
 797                         features.require("noun");
 798                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 799                                              << fcit->font().stateText(0)
 800                                              << endl;
 801                 }
 802                 switch (fcit->font().color()) {
 803                 case LColor::none:
 804                 case LColor::inherit:
 805                 case LColor::ignore:
 806                         // probably we should put here all interface colors used for
 807                         // font displaying! For now I just add this ones I know of (Jug)
 808                 case LColor::latex:
 809                 case LColor::note:
 810                         break;
 811                 default:
 812                         features.require("color");
 813                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 814                                              << fcit->font().stateText(0)
 815                                              << endl;
 816                 }
 817
 818                 Language const * language = fcit->font().language();
 819                 if (language->babel() != doc_language->babel() &&
 820                     language != ignore_language &&
 821                     language != latex_language)
 822                 {
 823                         features.useLanguage(language);
 824                         lyxerr[Debug::LATEX] << "Found language "
 825                                              << language->babel() << endl;
 826                 }
 827         }
 828
 829         if (!params.leftIndent().zero())
 830                 features.require("ParagraphLeftIndent");
 831
 832         // then the insets
 833         InsetList::iterator icit = owner_->insetlist.begin();
 834         InsetList::iterator iend = owner_->insetlist.end();
 835         for (; icit != iend; ++icit) {
 836                 if (icit.getInset()) {
 837                         icit.getInset()->validate(features);
 838                         if (layout.needprotect &&
 839                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 840                                 features.require("NeedLyXFootnoteCode");
 841                 }
 842         }
 843
 844         // then the contents
 845         for (pos_type i = 0; i < size() ; ++i) {
 846                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 847                         if (!special_phrases[pnr].builtin
 848                             && isTextAt(special_phrases[pnr].phrase, i)) {
 849                                 features.require(special_phrases[pnr].phrase);
 850                                 break;
 851                         }
 852                 }
 853         }
 854 }
 855
 856
 857 LyXFont const Paragraph::Pimpl::realizeFont(LyXFont const & font,
 858                                             BufferParams const & bparams) const
 859 {
 860         LyXFont tmpfont(font);
 861
 862         // check for environment font information
 863         depth_type par_depth = owner_->getDepth();
 864         Paragraph * par = owner_;
 865         LyXTextClass const & tclass = bparams.getLyXTextClass();
 866
 867         while (par && par->getDepth() && !tmpfont.resolved()) {
 868                 par = outerHook(par);
 869                 if (par) {
 870                         tmpfont.realize(par->layout()->font);
 871                         par_depth = par->getDepth();
 872                 }
 873         }
 874
 875         tmpfont.realize(tclass.defaultfont());
 876         return tmpfont;
 877 }