src/paragraph_pimpl.C

   1 /**
   2  * \file paragraph_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author John Levon
   9  * \author André Pönitz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "paragraph_pimpl.h"
  17 #include "paragraph.h"
  18
  19 #include "bufferparams.h"
  20 #include "debug.h"
  21 #include "encoding.h"
  22 #include "language.h"
  23 #include "LaTeXFeatures.h"
  24 #include "LColor.h"
  25 #include "lyxlength.h"
  26 #include "lyxrc.h"
  27 #include "outputparams.h"
  28 #include "texrow.h"
  29
  30 #include <boost/next_prior.hpp>
  31
  32
  33 namespace lyx {
  34
  35 using std::endl;
  36 using std::upper_bound;
  37 using std::lower_bound;
  38 using std::string;
  39
  40
  41 // Initialization of the counter for the paragraph id's,
  42 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  43
  44 namespace {
  45
  46 struct special_phrase {
  47         string phrase;
  48         docstring macro;
  49         bool builtin;
  50 };
  51
  52 special_phrase const special_phrases[] = {
  53         { "LyX", from_ascii("\\LyX{}"), false },
  54         { "TeX", from_ascii("\\TeX{}"), true },
  55         { "LaTeX2e", from_ascii("\\LaTeXe{}"), true },
  56         { "LaTeX", from_ascii("\\LaTeX{}"), true },
  57 };
  58
  59 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  60
  61 } // namespace anon
  62
  63
  64 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  65         : owner_(owner)
  66 {
  67         inset_owner = 0;
  68         id_ = paragraph_id++;
  69 }
  70
  71
  72 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner)
  73         : params(p.params), changes_(p.changes_), owner_(owner)
  74 {
  75         inset_owner = p.inset_owner;
  76         fontlist = p.fontlist;
  77         id_ = paragraph_id++;
  78 }
  79
  80
  81 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  82 {
  83         owner_->text_ = par.text_;
  84         // FIXME: change tracking (MG)
  85         // check whether this method is really needed
  86         changes_ = par.pimpl_->changes_;
  87 }
  88
  89
  90 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
  91 {
  92         BOOST_ASSERT(start >= 0 && start <= size());
  93         BOOST_ASSERT(end > start && end <= size() + 1);
  94
  95         return changes_.isChanged(start, end);
  96 }
  97
  98
  99 void Paragraph::Pimpl::setChange(Change const & change)
 100 {
 101         // beware of the imaginary end-of-par character!
 102         changes_.set(change, 0, size() + 1);
 103
 104         /*
 105          * Propagate the change recursively - but not in case of DELETED!
 106          *
 107          * Imagine that your co-author makes changes in an existing inset. He
 108          * sends your document to you and you come to the conclusion that the
 109          * inset should go completely. If you erase it, LyX must not delete all
 110          * text within the inset. Otherwise, the change tracked insertions of
 111          * your co-author get lost and there is no way to restore them later.
 112          *
 113          * Conclusion: An inset's content should remain untouched if you delete it
 114          */
 115
 116         if (change.type != Change::DELETED) {
 117                 for (pos_type pos = 0; pos < size(); ++pos) {
 118                         if (owner_->isInset(pos)) {
 119                                 owner_->getInset(pos)->setChange(change);
 120                         }
 121                 }
 122         }
 123 }
 124
 125
 126 void Paragraph::Pimpl::setChange(pos_type pos, Change const & change)
 127 {
 128         BOOST_ASSERT(pos >= 0 && pos <= size());
 129
 130         changes_.set(change, pos);
 131
 132         // see comment in setChange(Change const &) above
 133
 134         if (change.type != Change::DELETED &&
 135             pos < size() && owner_->isInset(pos)) {
 136                 owner_->getInset(pos)->setChange(change);
 137         }
 138 }
 139
 140
 141 Change const Paragraph::Pimpl::lookupChange(pos_type pos) const
 142 {
 143         BOOST_ASSERT(pos >= 0 && pos <= size());
 144
 145         return changes_.lookup(pos);
 146 }
 147
 148
 149 void Paragraph::Pimpl::acceptChanges(pos_type start, pos_type end)
 150 {
 151         BOOST_ASSERT(start >= 0 && start <= size());
 152         BOOST_ASSERT(end > start && end <= size() + 1);
 153
 154         for (pos_type pos = start; pos < end; ++pos) {
 155                 switch (lookupChange(pos).type) {
 156                         case Change::UNCHANGED:
 157                                 break;
 158
 159                         case Change::INSERTED:
 160                                 changes_.set(Change(Change::UNCHANGED), pos);
 161                                 break;
 162
 163                         case Change::DELETED:
 164                                 // Suppress access to non-existent
 165                                 // "end-of-paragraph char"
 166                                 if (pos < size()) {
 167                                         eraseChar(pos, false);
 168                                         --end;
 169                                         --pos;
 170                                 }
 171                                 break;
 172                 }
 173
 174                 // also accept changes in nested insets
 175                 if (pos < size() && owner_->isInset(pos)) {
 176                         owner_->getInset(pos)->acceptChanges();
 177                 }
 178         }
 179 }
 180
 181
 182 void Paragraph::Pimpl::rejectChanges(pos_type start, pos_type end)
 183 {
 184         BOOST_ASSERT(start >= 0 && start <= size());
 185         BOOST_ASSERT(end > start && end <= size() + 1);
 186
 187         for (pos_type pos = start; pos < end; ++pos) {
 188                 switch (lookupChange(pos).type) {
 189                         case Change::UNCHANGED:
 190                                 // also reject changes inside of insets
 191                                 if (pos < size() && owner_->isInset(pos)) {
 192                                         owner_->getInset(pos)->rejectChanges();
 193                                 }
 194                                 break;
 195
 196                         case Change::INSERTED:
 197                                 // Suppress access to non-existent
 198                                 // "end-of-paragraph char"
 199                                 if (pos < size()) {
 200                                         eraseChar(pos, false);
 201                                         --end;
 202                                         --pos;
 203                                 }
 204                                 break;
 205
 206                         case Change::DELETED:
 207                                 changes_.set(Change(Change::UNCHANGED), pos);
 208
 209                                 // Do NOT reject changes within a deleted inset!
 210                                 // There may be insertions of a co-author inside of it!
 211
 212                                 break;
 213                 }
 214         }
 215 }
 216
 217
 218 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 219 {
 220         BOOST_ASSERT(pos >= 0 && pos <= size());
 221
 222         return owner_->getChar(pos);
 223 }
 224
 225
 226 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & change)
 227 {
 228         BOOST_ASSERT(pos >= 0 && pos <= size());
 229
 230         // track change
 231         changes_.insert(change, pos);
 232
 233         // This is actually very common when parsing buffers (and
 234         // maybe inserting ascii text)
 235         if (pos == size()) {
 236                 // when appending characters, no need to update tables
 237                 owner_->text_.push_back(c);
 238                 return;
 239         }
 240
 241         owner_->text_.insert(owner_->text_.begin() + pos, c);
 242
 243         // Update the font table.
 244         FontTable search_font(pos, LyXFont());
 245         for (FontList::iterator it
 246               = lower_bound(fontlist.begin(), fontlist.end(), search_font, matchFT());
 247              it != fontlist.end(); ++it)
 248         {
 249                 it->pos(it->pos() + 1);
 250         }
 251
 252         // Update the insets
 253         owner_->insetlist.increasePosAfterPos(pos);
 254 }
 255
 256
 257 void Paragraph::Pimpl::insertInset(pos_type pos, InsetBase * inset,
 258                                    Change const & change)
 259 {
 260         BOOST_ASSERT(inset);
 261         BOOST_ASSERT(pos >= 0 && pos <= size());
 262
 263         insertChar(pos, META_INSET, change);
 264         BOOST_ASSERT(owner_->text_[pos] == META_INSET);
 265
 266         // Add a new entry in the insetlist.
 267         owner_->insetlist.insert(inset, pos);
 268 }
 269
 270
 271 bool Paragraph::Pimpl::eraseChar(pos_type pos, bool trackChanges)
 272 {
 273         BOOST_ASSERT(pos >= 0 && pos <= size());
 274
 275         if (trackChanges) {
 276                 Change change = changes_.lookup(pos);
 277
 278                 // set the character to DELETED if
 279                 //  a) it was previously unchanged or
 280                 //  b) it was inserted by a co-author
 281
 282                 if (change.type == Change::UNCHANGED ||
 283                     (change.type == Change::INSERTED && change.author != 0)) {
 284                         setChange(pos, Change(Change::DELETED));
 285                         return false;
 286                 }
 287
 288                 if (change.type == Change::DELETED)
 289                         return false;
 290         }
 291
 292         // Don't physically access nonexistent end-of-paragraph char
 293         if (pos == size()) {
 294                 // FIXME: change tracking (MG)
 295                 // how do we handle end-of-pars previously marked inserted?
 296                 return false;
 297         }
 298
 299         // track change
 300         changes_.erase(pos);
 301
 302         // if it is an inset, delete the inset entry
 303         if (owner_->text_[pos] == Paragraph::META_INSET) {
 304                 owner_->insetlist.erase(pos);
 305         }
 306
 307         owner_->text_.erase(owner_->text_.begin() + pos);
 308
 309         // Erase entries in the tables.
 310         FontTable search_font(pos, LyXFont());
 311
 312         FontList::iterator it =
 313                 lower_bound(fontlist.begin(),
 314                             fontlist.end(),
 315                             search_font, matchFT());
 316         if (it != fontlist.end() && it->pos() == pos &&
 317             (pos == 0 ||
 318              (it != fontlist.begin()
 319               && boost::prior(it)->pos() == pos - 1))) {
 320                 // If it is a multi-character font
 321                 // entry, we just make it smaller
 322                 // (see update below), otherwise we
 323                 // should delete it.
 324                 unsigned int const i = it - fontlist.begin();
 325                 fontlist.erase(fontlist.begin() + i);
 326                 it = fontlist.begin() + i;
 327                 if (i > 0 && i < fontlist.size() &&
 328                     fontlist[i - 1].font() == fontlist[i].font()) {
 329                         fontlist.erase(fontlist.begin() + i - 1);
 330                         it = fontlist.begin() + i - 1;
 331                 }
 332         }
 333
 334         // Update all other entries
 335         FontList::iterator fend = fontlist.end();
 336         for (; it != fend; ++it)
 337                 it->pos(it->pos() - 1);
 338
 339         // Update the insetlist
 340         owner_->insetlist.decreasePosAfterPos(pos);
 341
 342         return true;
 343 }
 344
 345
 346 int Paragraph::Pimpl::eraseChars(pos_type start, pos_type end, bool trackChanges)
 347 {
 348         BOOST_ASSERT(start >= 0 && start <= size());
 349         BOOST_ASSERT(end > start && end <= size() + 1);
 350
 351         pos_type i = start;
 352         for (pos_type count = end - start; count; --count) {
 353                 if (!eraseChar(i, trackChanges))
 354                         ++i;
 355         }
 356         return end - i;
 357 }
 358
 359
 360 void Paragraph::Pimpl::simpleTeXBlanks(odocstream & os, TexRow & texrow,
 361                                        pos_type const i,
 362                                        unsigned int & column,
 363                                        LyXFont const & font,
 364                                        LyXLayout const & style)
 365 {
 366         if (style.pass_thru)
 367                 return;
 368
 369         if (column > lyxrc.ascii_linelen
 370             && i
 371             && getChar(i - 1) != ' '
 372             && (i < size() - 1)
 373             // same in FreeSpacing mode
 374             && !owner_->isFreeSpacing()
 375             // In typewriter mode, we want to avoid
 376             // ! . ? : at the end of a line
 377             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 378                  && (getChar(i - 1) == '.'
 379                      || getChar(i - 1) == '?'
 380                      || getChar(i - 1) == ':'
 381                      || getChar(i - 1) == '!'))) {
 382                 os << '\n';
 383                 texrow.newline();
 384                 texrow.start(owner_->id(), i + 1);
 385                 column = 0;
 386         } else if (style.free_spacing) {
 387                 os << '~';
 388         } else {
 389                 os << ' ';
 390         }
 391 }
 392
 393
 394 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 395 {
 396         pos_type const len = str.length();
 397
 398         // is the paragraph large enough?
 399         if (pos + len > size())
 400                 return false;
 401
 402         // does the wanted text start at point?
 403         for (string::size_type i = 0; i < str.length(); ++i) {
 404                 if (str[i] != owner_->text_[pos + i])
 405                         return false;
 406         }
 407
 408         // is there a font change in middle of the word?
 409         FontList::const_iterator cit = fontlist.begin();
 410         FontList::const_iterator end = fontlist.end();
 411         for (; cit != end; ++cit) {
 412                 if (cit->pos() >= pos)
 413                         break;
 414         }
 415         if (cit != end && pos + len - 1 > cit->pos())
 416                 return false;
 417
 418         return true;
 419 }
 420
 421
 422 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 423                                              BufferParams const & bparams,
 424                                              odocstream & os,
 425                                              TexRow & texrow,
 426                                              OutputParams const & runparams,
 427                                              LyXFont & font,
 428                                              LyXFont & running_font,
 429                                              LyXFont & basefont,
 430                                              LyXFont const & outerfont,
 431                                              bool & open_font,
 432                                              Change::Type & running_change,
 433                                              LyXLayout const & style,
 434                                              pos_type & i,
 435                                              unsigned int & column,
 436                                              value_type const c)
 437 {
 438         if (style.pass_thru) {
 439                 if (c != Paragraph::META_INSET) {
 440                         if (c != '\0')
 441                                 os.put(c);
 442                 } else
 443                         owner_->getInset(i)->plaintext(buf, os, runparams);
 444                 return;
 445         }
 446
 447         // Two major modes:  LaTeX or plain
 448         // Handle here those cases common to both modes
 449         // and then split to handle the two modes separately.
 450         switch (c) {
 451         case Paragraph::META_INSET: {
 452                 InsetBase * inset = owner_->getInset(i);
 453
 454                 // FIXME: remove this check
 455                 if (!inset)
 456                         break;
 457
 458                 // FIXME: move this to InsetNewline::latex
 459                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 460                         // newlines are handled differently here than
 461                         // the default in simpleTeXSpecialChars().
 462                         if (!style.newline_allowed) {
 463                                 os << '\n';
 464                         } else {
 465                                 if (open_font) {
 466                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 467                                         open_font = false;
 468                                 }
 469                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 470                                 running_font = basefont;
 471
 472                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 473                                         os << '~';
 474
 475                                 if (runparams.moving_arg)
 476                                         os << "\\protect ";
 477
 478                                 os << "\\\\\n";
 479                         }
 480                         texrow.newline();
 481                         texrow.start(owner_->id(), i + 1);
 482                         column = 0;
 483                         break;
 484                 }
 485
 486                 // output change tracking marks only if desired,
 487                 // if dvipost is installed,
 488                 // and with dvi/ps (other formats don't work)
 489                 LaTeXFeatures features(buf, bparams, runparams);
 490                 bool const output = bparams.outputChanges
 491                         && runparams.flavor == OutputParams::LATEX
 492                         && features.isAvailable("dvipost");
 493
 494                 if (inset->canTrackChanges()) {
 495                         column += Changes::latexMarkChange(os, running_change,
 496                                 Change::UNCHANGED, output);
 497                         running_change = Change::UNCHANGED;
 498                 }
 499
 500                 bool close = false;
 501                 odocstream::pos_type const len = os.tellp();
 502
 503                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 504                      || inset->lyxCode() == InsetBase::MATH_CODE
 505                      || inset->lyxCode() == InsetBase::URL_CODE)
 506                     && running_font.isRightToLeft()) {
 507                         os << "\\L{";
 508                         close = true;
 509                 }
 510
 511 #ifdef WITH_WARNINGS
 512 #warning Bug: we can have an empty font change here!
 513 // if there has just been a font change, we are going to close it
 514 // right now, which means stupid latex code like \textsf{}. AFAIK,
 515 // this does not harm dvi output. A minor bug, thus (JMarc)
 516 #endif
 517                 // some insets cannot be inside a font change command
 518                 if (open_font && inset->noFontChange()) {
 519                         column +=running_font.
 520                                 latexWriteEndChanges(os,
 521                                                      basefont,
 522                                                      basefont);
 523                         open_font = false;
 524                         basefont = owner_->getLayoutFont(bparams, outerfont);
 525                         running_font = basefont;
 526                 }
 527
 528                 int tmp = inset->latex(buf, os, runparams);
 529
 530                 if (close)
 531                         os << '}';
 532
 533                 if (tmp) {
 534                         for (int j = 0; j < tmp; ++j) {
 535                                 texrow.newline();
 536                         }
 537                         texrow.start(owner_->id(), i + 1);
 538                         column = 0;
 539                 } else {
 540                         column += os.tellp() - len;
 541                 }
 542         }
 543         break;
 544
 545         default:
 546                 // And now for the special cases within each mode
 547
 548                 switch (c) {
 549                 case '\\':
 550                         os << "\\textbackslash{}";
 551                         column += 15;
 552                         break;
 553
 554                 // The following characters could be written literally in latin1, but they
 555                 // would be wrongly converted on systems where char is signed, so we give
 556                 // the code points.
 557                 // This also makes us independant from the encoding of this source file.
 558                 case 0xb1:    // ± PLUS-MINUS SIGN
 559                 case 0xb2:    // ² SUPERSCRIPT TWO
 560                 case 0xb3:    // ³ SUPERSCRIPT THREE
 561                 case 0xd7:    // × MULTIPLICATION SIGN
 562                 case 0xf7:    // ÷ DIVISION SIGN
 563                 case 0xb9:    // ¹ SUPERSCRIPT ONE
 564                 case 0xac:    // ¬ NOT SIGN
 565                 case 0xb5:    // µ MICRO SIGN
 566                         if ((bparams.inputenc == "latin1" ||
 567                              bparams.inputenc == "latin9") ||
 568                             (bparams.inputenc == "auto" &&
 569                              (font.language()->encoding()->latexName()
 570                               == "latin1" ||
 571                               font.language()->encoding()->latexName()
 572                               == "latin9"))) {
 573                                 os << "\\ensuremath{";
 574                                 os.put(c);
 575                                 os << '}';
 576                                 column += 13;
 577                         } else {
 578                                 os.put(c);
 579                         }
 580                         break;
 581
 582                 case '|': case '<': case '>':
 583                         // In T1 encoding, these characters exist
 584                         if (lyxrc.fontenc == "T1") {
 585                                 os.put(c);
 586                                 //... but we should avoid ligatures
 587                                 if ((c == '>' || c == '<')
 588                                     && i <= size() - 2
 589                                     && getChar(i + 1) == c) {
 590                                         //os << "\\textcompwordmark{}";
 591                                         // Jean-Marc, have a look at
 592                                         // this. I think this works
 593                                         // equally well:
 594                                         os << "\\,{}";
 595                                         // Lgb
 596                                         column += 19;
 597                                 }
 598                                 break;
 599                         }
 600                         // Typewriter font also has them
 601                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 602                                 os.put(c);
 603                                 break;
 604                         }
 605                         // Otherwise, we use what LaTeX
 606                         // provides us.
 607                         switch (c) {
 608                         case '<':
 609                                 os << "\\textless{}";
 610                                 column += 10;
 611                                 break;
 612                         case '>':
 613                                 os << "\\textgreater{}";
 614                                 column += 13;
 615                                 break;
 616                         case '|':
 617                                 os << "\\textbar{}";
 618                                 column += 9;
 619                                 break;
 620                         }
 621                         break;
 622
 623                 case '-': // "--" in Typewriter mode -> "-{}-"
 624                         if (i <= size() - 2
 625                             && getChar(i + 1) == '-'
 626                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 627                                 os << "-{}";
 628                                 column += 2;
 629                         } else {
 630                                 os << '-';
 631                         }
 632                         break;
 633
 634                 case '\"':
 635                         os << "\\char`\\\"{}";
 636                         column += 9;
 637                         break;
 638
 639                 case 0xa3:    // £ POUND SIGN
 640                         if (bparams.inputenc == "default") {
 641                                 os << "\\pounds{}";
 642                                 column += 8;
 643                         } else {
 644                                 os.put(c);
 645                         }
 646                         break;
 647
 648                 case '$': case '&':
 649                 case '%': case '#': case '{':
 650                 case '}': case '_':
 651                         os << '\\';
 652                         os.put(c);
 653                         column += 1;
 654                         break;
 655
 656                 case '~':
 657                         os << "\\textasciitilde{}";
 658                         column += 16;
 659                         break;
 660
 661                 case '^':
 662                         os << "\\textasciicircum{}";
 663                         column += 17;
 664                         break;
 665
 666                 case '*': case '[':
 667                         // avoid being mistaken for optional arguments
 668                         os << '{';
 669                         os.put(c);
 670                         os << '}';
 671                         column += 2;
 672                         break;
 673
 674                 case ' ':
 675                         // Blanks are printed before font switching.
 676                         // Sure? I am not! (try nice-latex)
 677                         // I am sure it's correct. LyX might be smarter
 678                         // in the future, but for now, nothing wrong is
 679                         // written. (Asger)
 680                         break;
 681
 682                 default:
 683
 684                         // I assume this is hack treating typewriter as verbatim
 685                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 686                                 if (c != '\0') {
 687                                         os.put(c);
 688                                 }
 689                                 break;
 690                         }
 691
 692                         // LyX, LaTeX etc.
 693
 694                         // FIXME: if we have "LaTeX" with a font
 695                         // change in the middle (before the 'T', then
 696                         // the "TeX" part is still special cased.
 697                         // Really we should only operate this on
 698                         // "words" for some definition of word
 699
 700                         size_t pnr = 0;
 701
 702                         for (; pnr < phrases_nr; ++pnr) {
 703                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 704                                         os << special_phrases[pnr].macro;
 705                                         i += special_phrases[pnr].phrase.length() - 1;
 706                                         column += special_phrases[pnr].macro.length() - 1;
 707                                         break;
 708                                 }
 709                         }
 710
 711                         if (pnr == phrases_nr && c != '\0') {
 712                                 os.put(c);
 713                         }
 714                         break;
 715                 }
 716         }
 717 }
 718
 719
 720 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 721                                 LyXLayout const & layout) const
 722 {
 723         BufferParams const & bparams = features.bufferParams();
 724
 725         // check the params.
 726         if (!params.spacing().isDefault())
 727                 features.require("setspace");
 728
 729         // then the layouts
 730         features.useLayout(layout.name());
 731
 732         // then the fonts
 733         Language const * doc_language = bparams.language;
 734
 735         FontList::const_iterator fcit = fontlist.begin();
 736         FontList::const_iterator fend = fontlist.end();
 737         for (; fcit != fend; ++fcit) {
 738                 if (fcit->font().noun() == LyXFont::ON) {
 739                         lyxerr[Debug::LATEX] << "font.noun: "
 740                                              << fcit->font().noun()
 741                                              << endl;
 742                         features.require("noun");
 743                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 744                                              << fcit->font().stateText(0)
 745                                              << endl;
 746                 }
 747                 switch (fcit->font().color()) {
 748                 case LColor::none:
 749                 case LColor::inherit:
 750                 case LColor::ignore:
 751                         // probably we should put here all interface colors used for
 752                         // font displaying! For now I just add this ones I know of (Jug)
 753                 case LColor::latex:
 754                 case LColor::note:
 755                         break;
 756                 default:
 757                         features.require("color");
 758                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 759                                              << fcit->font().stateText(0)
 760                                              << endl;
 761                 }
 762
 763                 Language const * language = fcit->font().language();
 764                 if (language->babel() != doc_language->babel() &&
 765                     language != ignore_language &&
 766                     language != latex_language)
 767                 {
 768                         features.useLanguage(language);
 769                         lyxerr[Debug::LATEX] << "Found language "
 770                                              << language->babel() << endl;
 771                 }
 772         }
 773
 774         if (!params.leftIndent().zero())
 775                 features.require("ParagraphLeftIndent");
 776
 777         // then the insets
 778         InsetList::const_iterator icit = owner_->insetlist.begin();
 779         InsetList::const_iterator iend = owner_->insetlist.end();
 780         for (; icit != iend; ++icit) {
 781                 if (icit->inset) {
 782                         icit->inset->validate(features);
 783                         if (layout.needprotect &&
 784                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 785                                 features.require("NeedLyXFootnoteCode");
 786                 }
 787         }
 788
 789         // then the contents
 790         for (pos_type i = 0; i < size() ; ++i) {
 791                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 792                         if (!special_phrases[pnr].builtin
 793                             && isTextAt(special_phrases[pnr].phrase, i)) {
 794                                 features.require(special_phrases[pnr].phrase);
 795                                 break;
 796                         }
 797                 }
 798         }
 799 }
 800
 801
 802 } // namespace lyx