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