src/paragraph.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 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "paragraph.h"
  18 #include "paragraph_pimpl.h"
  19 #include "lyxrc.h"
  20 #include "layout.h"
  21 #include "language.h"
  22 #include "tex-strings.h"
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "debug.h"
  26 #include "texrow.h"
  27 #include "BufferView.h"
  28 #include "encoding.h"
  29 #include "ParameterStruct.h"
  30 #include "gettext.h"
  31
  32 #include "insets/insetinclude.h"
  33 #include "insets/insetbib.h"
  34 #include "insets/insettext.h"
  35 #include "insets/insetoptarg.h"
  36
  37 #include "support/filetools.h"
  38 #include "support/lstrings.h"
  39 #include "support/lyxmanip.h"
  40 #include "support/FileInfo.h"
  41 #include "support/LAssert.h"
  42 #include "support/textutils.h"
  43
  44 #include <algorithm>
  45 #include <fstream>
  46 #include <csignal>
  47
  48 using std::ostream;
  49 using std::endl;
  50 using std::fstream;
  51 using std::ios;
  52 using std::lower_bound;
  53 using std::upper_bound;
  54 using std::reverse;
  55
  56 using lyx::pos_type;
  57
  58 // this is a bad idea, but how can Paragraph find its buffer to get
  59 // parameters? (JMarc)
  60
  61 extern string bibitemWidest(Buffer const *);
  62
  63 // this is a minibuffer
  64
  65 namespace {
  66
  67 char minibuffer_char;
  68 LyXFont minibuffer_font;
  69 Inset * minibuffer_inset;
  70
  71 } // namespace anon
  72
  73
  74 extern BufferView * current_view;
  75
  76
  77 Paragraph::Paragraph()
  78         : pimpl_(new Paragraph::Pimpl(this))
  79 {
  80 #ifndef NO_NEXT
  81         next_ = 0;
  82         previous_ = 0;
  83 #endif
  84         enumdepth = 0;
  85         itemdepth = 0;
  86         bibkey = 0; // ale970302
  87         params().clear();
  88 }
  89
  90
  91 #ifndef NO_NEXT
  92 // This constructor inserts the new paragraph in a list.
  93 Paragraph::Paragraph(Paragraph * par)
  94         : pimpl_(new Paragraph::Pimpl(this))
  95 {
  96         enumdepth = 0;
  97         itemdepth = 0;
  98
  99         // double linked list begin
 100         next_ = par->next_;
 101         if (next_)
 102                 next_->previous_ = this;
 103         previous_ = par;
 104         previous_->next_ = this;
 105         // end
 106
 107         bibkey = 0; // ale970302
 108         params().clear();
 109 }
 110 #endif
 111
 112
 113 Paragraph::Paragraph(Paragraph const & lp, bool same_ids)
 114         : pimpl_(new Paragraph::Pimpl(*lp.pimpl_, this, same_ids))
 115 {
 116         enumdepth = 0;
 117         itemdepth = 0;
 118 #ifndef NO_NEXT
 119         next_     = 0;
 120         previous_ = 0;
 121 #endif
 122         // this is because of the dummy layout of the paragraphs that
 123         // follow footnotes
 124         layout_ = lp.layout();
 125
 126         // ale970302
 127         if (lp.bibkey) {
 128                 bibkey = static_cast<InsetBibKey *>
 129                         (lp.bibkey->clone(*current_view->buffer()));
 130         } else {
 131                 bibkey = 0;
 132         }
 133
 134         // copy everything behind the break-position to the new paragraph
 135         insetlist = lp.insetlist;
 136         InsetList::iterator it = insetlist.begin();
 137         InsetList::iterator end = insetlist.end();
 138         for (; it != end; ++it) {
 139                 it.setInset(it.getInset()->clone(*current_view->buffer(),
 140                                                  same_ids));
 141                 // tell the new inset who is the boss now
 142                 it.getInset()->parOwner(this);
 143         }
 144 }
 145
 146
 147 // the destructor removes the new paragraph from the list
 148 Paragraph::~Paragraph()
 149 {
 150 #ifndef NO_NEXT
 151         if (previous_)
 152                 previous_->next_ = next_;
 153         if (next_)
 154                 next_->previous_ = previous_;
 155 #endif
 156
 157         // ale970302
 158         delete bibkey;
 159
 160         delete pimpl_;
 161         //
 162         //lyxerr << "Paragraph::paragraph_id = "
 163         //       << Paragraph::paragraph_id << endl;
 164 }
 165
 166
 167 void Paragraph::write(Buffer const * buf, ostream & os,
 168                           BufferParams const & bparams,
 169                           depth_type & dth) const
 170 {
 171         // The beginning or end of a deeper (i.e. nested) area?
 172         if (dth != params().depth()) {
 173                 if (params().depth() > dth) {
 174                         while (params().depth() > dth) {
 175                                 os << "\n\\begin_deeper ";
 176                                 ++dth;
 177                         }
 178                 } else {
 179                         while (params().depth() < dth) {
 180                                 os << "\n\\end_deeper ";
 181                                 --dth;
 182                         }
 183                 }
 184         }
 185
 186         // First write the layout
 187         os << "\n\\layout " << layout()->name() << "\n";
 188
 189         // Maybe some vertical spaces.
 190         if (params().spaceTop().kind() != VSpace::NONE)
 191                 os << "\\added_space_top "
 192                    << params().spaceTop().asLyXCommand() << " ";
 193         if (params().spaceBottom().kind() != VSpace::NONE)
 194                 os << "\\added_space_bottom "
 195                    << params().spaceBottom().asLyXCommand() << " ";
 196
 197         // Maybe the paragraph has special spacing
 198         params().spacing().writeFile(os, true);
 199
 200         // The labelwidth string used in lists.
 201         if (!params().labelWidthString().empty())
 202                 os << "\\labelwidthstring "
 203                    << params().labelWidthString() << '\n';
 204
 205         // Lines above or below?
 206         if (params().lineTop())
 207                 os << "\\line_top ";
 208         if (params().lineBottom())
 209                 os << "\\line_bottom ";
 210
 211         // Pagebreaks above or below?
 212         if (params().pagebreakTop())
 213                 os << "\\pagebreak_top ";
 214         if (params().pagebreakBottom())
 215                 os << "\\pagebreak_bottom ";
 216
 217         // Start of appendix?
 218         if (params().startOfAppendix())
 219                 os << "\\start_of_appendix ";
 220
 221         // Noindent?
 222         if (params().noindent())
 223                 os << "\\noindent ";
 224
 225         // Do we have a manual left indent?
 226         if (!params().leftIndent().zero())
 227                 os << "\\leftindent " << params().leftIndent().asString() << " ";
 228
 229         // Alignment?
 230         if (params().align() != LYX_ALIGN_LAYOUT) {
 231                 int h = 0;
 232                 switch (params().align()) {
 233                 case LYX_ALIGN_LEFT: h = 1; break;
 234                 case LYX_ALIGN_RIGHT: h = 2; break;
 235                 case LYX_ALIGN_CENTER: h = 3; break;
 236                 default: h = 0; break;
 237                 }
 238                 os << "\\align " << string_align[h] << " ";
 239         }
 240
 241         // bibitem  ale970302
 242         if (bibkey)
 243                 bibkey->write(buf, os);
 244
 245         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 246
 247         int column = 0;
 248         for (pos_type i = 0; i < size(); ++i) {
 249                 if (!i) {
 250                         os << "\n";
 251                         column = 0;
 252                 }
 253
 254                 // Write font changes
 255                 LyXFont font2 = getFontSettings(bparams, i);
 256                 if (font2 != font1) {
 257 #ifndef INHERIT_LANGUAGE
 258                         font2.lyxWriteChanges(font1, os);
 259 #else
 260                         font2.lyxWriteChanges(font1, bparams.language, os);
 261 #endif
 262                         column = 0;
 263                         font1 = font2;
 264                 }
 265
 266                 value_type const c = getChar(i);
 267                 switch (c) {
 268                 case META_INSET:
 269                 {
 270                         Inset const * inset = getInset(i);
 271                         if (inset)
 272                                 if (inset->directWrite()) {
 273                                         // international char, let it write
 274                                         // code directly so it's shorter in
 275                                         // the file
 276                                         inset->write(buf, os);
 277                                 } else {
 278                                         os << "\n\\begin_inset ";
 279                                         inset->write(buf, os);
 280                                         os << "\n\\end_inset \n\n";
 281                                         column = 0;
 282                                 }
 283                 }
 284                 break;
 285                 case META_NEWLINE:
 286                         os << "\n\\newline \n";
 287                         column = 0;
 288                         break;
 289                 case META_HFILL:
 290                         os << "\n\\hfill \n";
 291                         column = 0;
 292                         break;
 293                 case '\\':
 294                         os << "\n\\backslash \n";
 295                         column = 0;
 296                         break;
 297                 case '.':
 298                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 299                                 os << ".\n";
 300                                 column = 0;
 301                         } else
 302                                 os << ".";
 303                         break;
 304                 default:
 305                         if ((column > 70 && c == ' ')
 306                             || column > 79) {
 307                                 os << "\n";
 308                                 column = 0;
 309                         }
 310                         // this check is to amend a bug. LyX sometimes
 311                         // inserts '\0' this could cause problems.
 312                         if (c != '\0')
 313                                 os << c;
 314                         else
 315                                 lyxerr << "ERROR (Paragraph::writeFile):"
 316                                         " NULL char in structure." << endl;
 317                         ++column;
 318                         break;
 319                 }
 320         }
 321 }
 322
 323
 324 void Paragraph::validate(LaTeXFeatures & features) const
 325 {
 326         pimpl_->validate(features, *layout());
 327 }
 328
 329
 330 // First few functions needed for cut and paste and paragraph breaking.
 331 void Paragraph::copyIntoMinibuffer(Buffer const & buffer, pos_type pos) const
 332 {
 333         BufferParams bparams = buffer.params;
 334
 335         minibuffer_char = getChar(pos);
 336         minibuffer_font = getFontSettings(bparams, pos);
 337         minibuffer_inset = 0;
 338         if (minibuffer_char == Paragraph::META_INSET) {
 339                 if (getInset(pos)) {
 340                         minibuffer_inset = getInset(pos)->clone(buffer);
 341                 } else {
 342                         minibuffer_inset = 0;
 343                         minibuffer_char = ' ';
 344                         // This reflects what GetInset() does (ARRae)
 345                 }
 346         }
 347 }
 348
 349
 350 void Paragraph::cutIntoMinibuffer(BufferParams const & bparams, pos_type pos)
 351 {
 352         minibuffer_char = getChar(pos);
 353         minibuffer_font = getFontSettings(bparams, pos);
 354         minibuffer_inset = 0;
 355         if (minibuffer_char == Paragraph::META_INSET) {
 356                 if (getInset(pos)) {
 357                         // the inset is not in a paragraph anymore
 358                         minibuffer_inset = insetlist.release(pos);
 359                         minibuffer_inset->parOwner(0);
 360                 } else {
 361                         minibuffer_inset = 0;
 362                         minibuffer_char = ' ';
 363                         // This reflects what GetInset() does (ARRae)
 364                 }
 365
 366         }
 367
 368         // Erase(pos); now the caller is responsible for that.
 369 }
 370
 371
 372 bool Paragraph::insertFromMinibuffer(pos_type pos)
 373 {
 374         if (minibuffer_char == Paragraph::META_INSET) {
 375                 if (!insetAllowed(minibuffer_inset->lyxCode())) {
 376                         return false;
 377                 }
 378                 insertInset(pos, minibuffer_inset, minibuffer_font);
 379         } else {
 380                 LyXFont f = minibuffer_font;
 381                 if (!checkInsertChar(f)) {
 382                         return false;
 383                 }
 384                 insertChar(pos, minibuffer_char, f);
 385         }
 386         return true;
 387 }
 388
 389 // end of minibuffer
 390
 391
 392 void Paragraph::erase(pos_type pos)
 393 {
 394         pimpl_->erase(pos);
 395 }
 396
 397
 398 bool Paragraph::checkInsertChar(LyXFont & font)
 399 {
 400         if (pimpl_->inset_owner)
 401                 return pimpl_->inset_owner->checkInsertChar(font);
 402         return true;
 403 }
 404
 405
 406 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c)
 407 {
 408         LyXFont const f(LyXFont::ALL_INHERIT);
 409         insertChar(pos, c, f);
 410 }
 411
 412
 413 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 414                            LyXFont const & font)
 415 {
 416         pimpl_->insertChar(pos, c, font);
 417 }
 418
 419
 420 void Paragraph::insertInset(pos_type pos, Inset * inset)
 421 {
 422         LyXFont const f(LyXFont::ALL_INHERIT);
 423         insertInset(pos, inset, f);
 424 }
 425
 426
 427 void Paragraph::insertInset(pos_type pos, Inset * inset, LyXFont const & font)
 428 {
 429         pimpl_->insertInset(pos, inset, font);
 430 }
 431
 432
 433 bool Paragraph::insetAllowed(Inset::Code code)
 434 {
 435         //lyxerr << "Paragraph::InsertInsetAllowed" << endl;
 436
 437         if (pimpl_->inset_owner)
 438                 return pimpl_->inset_owner->insetAllowed(code);
 439         return true;
 440 }
 441
 442
 443 Inset * Paragraph::getInset(pos_type pos)
 444 {
 445         lyx::Assert(pos < size());
 446
 447         return insetlist.get(pos);
 448 }
 449
 450
 451 Inset const * Paragraph::getInset(pos_type pos) const
 452 {
 453         lyx::Assert(pos < size());
 454
 455         return insetlist.get(pos);
 456 }
 457
 458
 459 // Gets uninstantiated font setting at position.
 460 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 461                                          pos_type pos) const
 462 {
 463         lyx::Assert(pos <= size());
 464
 465         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 466         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 467         for (; cit != end; ++cit) {
 468                 if (cit->pos() >= pos)
 469                         break;
 470         }
 471
 472         LyXFont retfont;
 473         if (cit != end) {
 474                 retfont = cit->font();
 475         } else if (pos == size() && !empty()) {
 476                 retfont = getFontSettings(bparams, pos - 1);
 477         } else
 478                 retfont = LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 479 #ifdef INHERIT_LANGUAGE
 480         if (retfont.language() == inherit_language)
 481                 retfont.setLanguage(bparams.language);
 482 #endif
 483
 484         return retfont;
 485 }
 486
 487
 488 // Gets uninstantiated font setting at position 0
 489 LyXFont const Paragraph::getFirstFontSettings() const
 490 {
 491         if (!empty() && !pimpl_->fontlist.empty())
 492                 return pimpl_->fontlist[0].font();
 493
 494         return LyXFont(LyXFont::ALL_INHERIT);
 495 }
 496
 497
 498 // Gets the fully instantiated font at a given position in a paragraph
 499 // This is basically the same function as LyXText::GetFont() in text2.C.
 500 // The difference is that this one is used for generating the LaTeX file,
 501 // and thus cosmetic "improvements" are disallowed: This has to deliver
 502 // the true picture of the buffer. (Asger)
 503 // If position is -1, we get the layout font of the paragraph.
 504 // If position is -2, we get the font of the manual label of the paragraph.
 505 LyXFont const Paragraph::getFont(BufferParams const & bparams,
 506                                  pos_type pos) const
 507 {
 508         lyx::Assert(pos >= 0);
 509
 510         LyXLayout_ptr const & lout = layout();
 511
 512         pos_type main_body = 0;
 513         if (lout->labeltype == LABEL_MANUAL)
 514                 main_body = beginningOfMainBody();
 515
 516         LyXFont layoutfont;
 517         if (pos < main_body)
 518                 layoutfont = lout->labelfont;
 519         else
 520                 layoutfont = lout->font;
 521
 522         LyXFont tmpfont = getFontSettings(bparams, pos);
 523 #ifndef INHERIT_LANGUAGE
 524         tmpfont.realize(layoutfont);
 525 #else
 526         tmpfont.realize(layoutfont, bparams.language);
 527 #endif
 528
 529         return pimpl_->realizeFont(tmpfont, bparams);
 530 }
 531
 532
 533 LyXFont const Paragraph::getLabelFont(BufferParams const & bparams) const
 534 {
 535         LyXLayout_ptr const & lout = layout();
 536
 537         LyXFont tmpfont = lout->labelfont;
 538         tmpfont.setLanguage(getParLanguage(bparams));
 539
 540         return pimpl_->realizeFont(tmpfont, bparams);
 541 }
 542
 543
 544 LyXFont const Paragraph::getLayoutFont(BufferParams const & bparams) const
 545 {
 546         LyXLayout_ptr const & lout = layout();
 547
 548         LyXFont tmpfont = lout->font;
 549         tmpfont.setLanguage(getParLanguage(bparams));
 550
 551         return pimpl_->realizeFont(tmpfont, bparams);
 552 }
 553
 554
 555 /// Returns the height of the highest font in range
 556 LyXFont::FONT_SIZE
 557 Paragraph::highestFontInRange(pos_type startpos, pos_type endpos,
 558                               LyXFont::FONT_SIZE const def_size) const
 559 {
 560         if (pimpl_->fontlist.empty())
 561                 return def_size;
 562
 563         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 564         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 565         for (; end_it != end; ++end_it) {
 566                 if (end_it->pos() >= endpos)
 567                         break;
 568         }
 569
 570         if (end_it != end)
 571                 ++end_it;
 572
 573         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 574         for (; cit != end; ++cit) {
 575                 if (cit->pos() >= startpos)
 576                         break;
 577         }
 578
 579         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 580         for (; cit != end_it; ++cit) {
 581                 LyXFont::FONT_SIZE size = cit->font().size();
 582                 if (size == LyXFont::INHERIT_SIZE)
 583                         size = def_size;
 584                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 585                         maxsize = size;
 586         }
 587         return maxsize;
 588 }
 589
 590
 591 Paragraph::value_type
 592 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 593 {
 594         value_type c = getChar(pos);
 595         if (!lyxrc.rtl_support)
 596                 return c;
 597
 598         value_type uc = c;
 599         switch (c) {
 600         case '(':
 601                 uc = ')';
 602                 break;
 603         case ')':
 604                 uc = '(';
 605                 break;
 606         case '[':
 607                 uc = ']';
 608                 break;
 609         case ']':
 610                 uc = '[';
 611                 break;
 612         case '{':
 613                 uc = '}';
 614                 break;
 615         case '}':
 616                 uc = '{';
 617                 break;
 618         case '<':
 619                 uc = '>';
 620                 break;
 621         case '>':
 622                 uc = '<';
 623                 break;
 624         }
 625         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 626                 return uc;
 627         else
 628                 return c;
 629 }
 630
 631
 632 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 633 {
 634         lyx::Assert(pos <= size());
 635
 636         // First, reduce font against layout/label font
 637         // Update: The SetCharFont() routine in text2.C already
 638         // reduces font, so we don't need to do that here. (Asger)
 639         // No need to simplify this because it will disappear
 640         // in a new kernel. (Asger)
 641         // Next search font table
 642
 643         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 644         Pimpl::FontList::iterator it = beg;
 645         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 646         for (; it != endit; ++it) {
 647                 if (it->pos() >= pos)
 648                         break;
 649         }
 650         unsigned int i = std::distance(beg, it);
 651         bool notfound = (it == endit);
 652
 653         if (!notfound && pimpl_->fontlist[i].font() == font)
 654                 return;
 655
 656         bool begin = pos == 0 || notfound ||
 657                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 658         // Is position pos is a beginning of a font block?
 659         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 660         // Is position pos is the end of a font block?
 661         if (begin && end) { // A single char block
 662                 if (i + 1 < pimpl_->fontlist.size() &&
 663                     pimpl_->fontlist[i + 1].font() == font) {
 664                         // Merge the singleton block with the next block
 665                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 666                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 667                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 668                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 669                         // Merge the singleton block with the previous block
 670                         pimpl_->fontlist[i - 1].pos(pos);
 671                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 672                 } else
 673                         pimpl_->fontlist[i].font(font);
 674         } else if (begin) {
 675                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 676                         pimpl_->fontlist[i - 1].pos(pos);
 677                 else
 678                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 679                                         Pimpl::FontTable(pos, font));
 680         } else if (end) {
 681                 pimpl_->fontlist[i].pos(pos - 1);
 682                 if (!(i + 1 < pimpl_->fontlist.size() &&
 683                       pimpl_->fontlist[i + 1].font() == font))
 684                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 685                                         Pimpl::FontTable(pos, font));
 686         } else { // The general case. The block is splitted into 3 blocks
 687                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 688                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 689                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 690                                 Pimpl::FontTable(pos, font));
 691         }
 692 }
 693
 694
 695 #ifndef NO_NEXT
 696 void Paragraph::next(Paragraph * p)
 697 {
 698         next_ = p;
 699 }
 700
 701
 702 // This function is able to hide closed footnotes.
 703 Paragraph * Paragraph::next()
 704 {
 705         return next_;
 706 }
 707
 708
 709 Paragraph const * Paragraph::next() const
 710 {
 711         return next_;
 712 }
 713
 714
 715 void Paragraph::previous(Paragraph * p)
 716 {
 717         previous_ = p;
 718 }
 719
 720
 721 // This function is able to hide closed footnotes.
 722 Paragraph * Paragraph::previous()
 723 {
 724         return previous_;
 725 }
 726
 727
 728 // This function is able to hide closed footnotes.
 729 Paragraph const * Paragraph::previous() const
 730 {
 731         return previous_;
 732 }
 733 #endif
 734
 735
 736 void Paragraph::makeSameLayout(Paragraph const * par)
 737 {
 738         layout(par->layout());
 739         // move to pimpl?
 740         params() = par->params();
 741 }
 742
 743
 744 int Paragraph::stripLeadingSpaces()
 745 {
 746         if (layout()->free_spacing ||
 747             isFreeSpacing()) {
 748                 return 0;
 749         }
 750
 751         int i = 0;
 752         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 753                 erase(0);
 754                 ++i;
 755         }
 756
 757         return i;
 758 }
 759
 760
 761 bool Paragraph::hasSameLayout(Paragraph const * par) const
 762 {
 763         return
 764                 par->layout() == layout() &&
 765                 params().sameLayout(par->params());
 766 }
 767
 768
 769 int Paragraph::getEndLabel() const
 770 {
 771         Paragraph const * par = this;
 772         depth_type par_depth = getDepth();
 773         while (par) {
 774                 LyXLayout_ptr const & layout = par->layout();
 775                 int const endlabeltype = layout->endlabeltype;
 776
 777                 if (endlabeltype != END_LABEL_NO_LABEL) {
 778                         if (!next_)
 779                                 return endlabeltype;
 780
 781                         depth_type const next_depth = next_->getDepth();
 782                         if (par_depth > next_depth ||
 783                             (par_depth == next_depth
 784                              && layout != next_->layout()))
 785                                 return endlabeltype;
 786                         break;
 787                 }
 788                 if (par_depth == 0)
 789                         break;
 790                 par = par->outerHook();
 791                 if (par)
 792                         par_depth = par->getDepth();
 793         }
 794         return END_LABEL_NO_LABEL;
 795 }
 796
 797
 798 Paragraph::depth_type Paragraph::getDepth() const
 799 {
 800         return params().depth();
 801 }
 802
 803
 804 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 805 {
 806         bool const isenv = layout()->isEnvironment();
 807
 808         if (isenv)
 809                 return params().depth() + 1;
 810         else
 811                 return params().depth();
 812
 813 }
 814
 815 char Paragraph::getAlign() const
 816 {
 817         return params().align();
 818 }
 819
 820
 821 string const & Paragraph::getLabelstring() const
 822 {
 823         return params().labelString();
 824 }
 825
 826
 827 // the next two functions are for the manual labels
 828 string const Paragraph::getLabelWidthString() const
 829 {
 830         if (!params().labelWidthString().empty())
 831                 return params().labelWidthString();
 832         else
 833                 return _("Senseless with this layout!");
 834 }
 835
 836
 837 void Paragraph::setLabelWidthString(string const & s)
 838 {
 839         params().labelWidthString(s);
 840 }
 841
 842
 843 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 844 {
 845         layout(new_layout);
 846         params().labelWidthString(string());
 847         params().align(LYX_ALIGN_LAYOUT);
 848         params().spaceTop(VSpace(VSpace::NONE));
 849         params().spaceBottom(VSpace(VSpace::NONE));
 850         params().spacing(Spacing(Spacing::Default));
 851 }
 852
 853
 854 // if the layout of a paragraph contains a manual label, the beginning of the
 855 // main body is the beginning of the second word. This is what the par-
 856 // function returns. If the layout does not contain a label, the main
 857 // body always starts with position 0. This differentiation is necessary,
 858 // because there cannot be a newline or a blank <= the beginning of the
 859 // main body in TeX.
 860
 861 int Paragraph::beginningOfMainBody() const
 862 {
 863         // Unroll the first two cycles of the loop
 864         // and remember the previous character to
 865         // remove unnecessary GetChar() calls
 866         pos_type i = 0;
 867         if (i < size() && getChar(i) != Paragraph::META_NEWLINE) {
 868                 ++i;
 869                 char previous_char = 0;
 870                 char temp = 0;
 871                 if (i < size()
 872                     && (previous_char = getChar(i)) != Paragraph::META_NEWLINE) {
 873                         // Yes, this  ^ is supposed to be "= " not "=="
 874                         ++i;
 875                         while (i < size()
 876                                && previous_char != ' '
 877                                && (temp = getChar(i)) != Paragraph::META_NEWLINE) {
 878                                 ++i;
 879                                 previous_char = temp;
 880                         }
 881                 }
 882         }
 883
 884         return i;
 885 }
 886
 887
 888 Paragraph * Paragraph::depthHook(depth_type depth)
 889 {
 890         Paragraph * newpar = this;
 891
 892         do {
 893                 newpar = newpar->previous();
 894         } while (newpar && newpar->getDepth() > depth);
 895
 896         if (!newpar) {
 897                 if (previous() || getDepth())
 898                         lyxerr << "ERROR (Paragraph::DepthHook): "
 899                                 "no hook." << endl;
 900                 newpar = this;
 901         }
 902
 903         return newpar;
 904 }
 905
 906
 907 Paragraph const * Paragraph::depthHook(depth_type depth) const
 908 {
 909         Paragraph const * newpar = this;
 910
 911         do {
 912                 newpar = newpar->previous();
 913         } while (newpar && newpar->getDepth() > depth);
 914
 915         if (!newpar) {
 916                 if (previous() || getDepth())
 917                         lyxerr << "ERROR (Paragraph::DepthHook): "
 918                                 "no hook." << endl;
 919                 newpar = this;
 920         }
 921
 922         return newpar;
 923 }
 924
 925
 926 Paragraph * Paragraph::outerHook()
 927 {
 928         if (!getDepth())
 929                 return 0;
 930         return depthHook(depth_type(getDepth() - 1));
 931 }
 932
 933
 934 Paragraph const * Paragraph::outerHook() const
 935 {
 936         if (!getDepth())
 937                 return 0;
 938         return depthHook(depth_type(getDepth() - 1));
 939 }
 940
 941
 942 // returns -1 if inset not found
 943 int Paragraph::getPositionOfInset(Inset const * inset) const
 944 {
 945         // Find the entry.
 946         InsetList::iterator it = insetlist.begin();
 947         InsetList::iterator end = insetlist.end();
 948         for (; it != end; ++it) {
 949                 if (it.getInset() == inset) {
 950                         return it.getPos();
 951                 }
 952         }
 953         if (inset == bibkey)
 954                 return 0;
 955
 956         return -1;
 957 }
 958
 959 namespace {
 960
 961 InsetOptArg * optArgInset(Paragraph const & par)
 962 {
 963         // Find the entry.
 964         InsetList::iterator it = par.insetlist.begin();
 965         InsetList::iterator end = par.insetlist.end();
 966         for (; it != end; ++it) {
 967                 Inset * ins = it.getInset();
 968                 if (ins->lyxCode() == Inset::OPTARG_CODE) {
 969                         return static_cast<InsetOptArg *>(ins);
 970                 }
 971         }
 972         return 0;
 973 }
 974
 975 } // end namespace
 976
 977 Paragraph * Paragraph::TeXOnePar(Buffer const * buf,
 978                                  BufferParams const & bparams,
 979                                  ostream & os, TexRow & texrow,
 980                                  bool moving_arg)
 981 {
 982         lyxerr[Debug::LATEX] << "TeXOnePar...     " << this << endl;
 983         Inset const * in = inInset();
 984         bool further_blank_line = false;
 985         LyXLayout_ptr style;
 986
 987         // well we have to check if we are in an inset with unlimited
 988         // lenght (all in one row) if that is true then we don't allow
 989         // any special options in the paragraph and also we don't allow
 990         // any environment other then "Standard" to be valid!
 991         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 992                 style = layout();
 993
 994                 if (params().startOfAppendix()) {
 995                         os << "\\appendix\n";
 996                         texrow.newline();
 997                 }
 998
 999                 if (!params().spacing().isDefault()
1000                         && (!previous() || !previous()->hasSameLayout(this))) {
1001                         os << params().spacing().writeEnvirBegin() << "\n";
1002                         texrow.newline();
1003                 }
1004
1005                 if (style->isCommand()) {
1006                         os << '\n';
1007                         texrow.newline();
1008                 }
1009
1010                 if (params().pagebreakTop()) {
1011                         os << "\\newpage";
1012                         further_blank_line = true;
1013                 }
1014                 if (params().spaceTop().kind() != VSpace::NONE) {
1015                         os << params().spaceTop().asLatexCommand(bparams);
1016                         further_blank_line = true;
1017                 }
1018
1019                 if (params().lineTop()) {
1020                         os << "\\lyxline{\\" << getFont(bparams, 0).latexSize() << '}'
1021                            << "\\vspace{-1\\parskip}";
1022                         further_blank_line = true;
1023                 }
1024
1025                 if (further_blank_line) {
1026                         os << '\n';
1027                         texrow.newline();
1028                 }
1029         } else {
1030                 style = bparams.getLyXTextClass().defaultLayout();
1031         }
1032
1033         Language const * language = getParLanguage(bparams);
1034         Language const * doc_language = bparams.language;
1035         Language const * previous_language = previous()
1036                 ? previous()->getParLanguage(bparams) : doc_language;
1037
1038         if (language->babel() != previous_language->babel()
1039             // check if we already put language command in TeXEnvironment()
1040             && !(style->isEnvironment()
1041                  && (!previous() || previous()->layout() != layout() ||
1042                          previous()->params().depth() != params().depth())))
1043         {
1044                 if (!lyxrc.language_command_end.empty() &&
1045                     previous_language->babel() != doc_language->babel())
1046                 {
1047                         os << subst(lyxrc.language_command_end, "$$lang",
1048                                     previous_language->babel())
1049                            << endl;
1050                         texrow.newline();
1051                 }
1052
1053                 if (lyxrc.language_command_end.empty() ||
1054                     language->babel() != doc_language->babel())
1055                 {
1056                         os << subst(lyxrc.language_command_begin, "$$lang",
1057                                     language->babel())
1058                            << endl;
1059                         texrow.newline();
1060                 }
1061         }
1062
1063         if (bparams.inputenc == "auto" &&
1064             language->encoding() != previous_language->encoding()) {
1065                 os << "\\inputencoding{"
1066                    << language->encoding()->LatexName()
1067                    << "}" << endl;
1068                 texrow.newline();
1069         }
1070
1071         switch (style->latextype) {
1072         case LATEX_COMMAND:
1073                 os << '\\'
1074                    << style->latexname();
1075
1076                 // Separate handling of optional argument inset.
1077                 if (style->optionalargs == 1) {
1078                         InsetOptArg * it = optArgInset(*this);
1079                         if (it != 0)
1080                                 it->latexOptional(buf, os, false, false);
1081                 }
1082                 else
1083                         os << style->latexparam();
1084                 break;
1085         case LATEX_ITEM_ENVIRONMENT:
1086                 if (bibkey) {
1087                         bibkey->latex(buf, os, false, false);
1088                 } else
1089                         os << "\\item ";
1090                 break;
1091         case LATEX_LIST_ENVIRONMENT:
1092                 os << "\\item ";
1093                 break;
1094         default:
1095                 break;
1096         }
1097
1098         bool need_par = simpleTeXOnePar(buf, bparams, os, texrow, moving_arg);
1099
1100         // Make sure that \\par is done with the font of the last
1101         // character if this has another size as the default.
1102         // This is necessary because LaTeX (and LyX on the screen)
1103         // calculates the space between the baselines according
1104         // to this font. (Matthias)
1105         //
1106         // Is this really needed ? (Dekel)
1107         // We do not need to use to change the font for the last paragraph
1108         // or for a command.
1109         LyXFont const font =
1110                 (empty()
1111                  ? getLayoutFont(bparams) : getFont(bparams, size() - 1));
1112
1113         bool is_command = style->isCommand();
1114
1115         if (style->resfont.size() != font.size() && next_ && !is_command) {
1116                 if (!need_par)
1117                         os << "{";
1118                 os << "\\" << font.latexSize() << " \\par}";
1119         } else if (need_par) {
1120                 os << "\\par}";
1121         } else if (is_command)
1122                 os << "}";
1123
1124         switch (style->latextype) {
1125         case LATEX_ITEM_ENVIRONMENT:
1126         case LATEX_LIST_ENVIRONMENT:
1127                 if (next_ && (params().depth() < next_->params().depth())) {
1128                         os << '\n';
1129                         texrow.newline();
1130                 }
1131                 break;
1132         case LATEX_ENVIRONMENT:
1133                 // if its the last paragraph of the current environment
1134                 // skip it otherwise fall through
1135                 if (next_
1136                     && (next_->layout() != layout()
1137                         || next_->params().depth() != params().depth()))
1138                         break;
1139                 // fall through possible
1140         default:
1141                 // we don't need it for the last paragraph!!!
1142                 if (next_) {
1143                         os << '\n';
1144                         texrow.newline();
1145                 }
1146         }
1147
1148         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
1149                 further_blank_line = false;
1150                 if (params().lineBottom()) {
1151                         os << "\\lyxline{\\" << font.latexSize() << '}';
1152                         further_blank_line = true;
1153                 }
1154
1155                 if (params().spaceBottom().kind() != VSpace::NONE) {
1156                         os << params().spaceBottom().asLatexCommand(bparams);
1157                         further_blank_line = true;
1158                 }
1159
1160                 if (params().pagebreakBottom()) {
1161                         os << "\\newpage";
1162                         further_blank_line = true;
1163                 }
1164
1165                 if (further_blank_line) {
1166                         os << '\n';
1167                         texrow.newline();
1168                 }
1169
1170                 if (!params().spacing().isDefault()
1171                         && (!next_ || !next_->hasSameLayout(this))) {
1172                         os << params().spacing().writeEnvirEnd() << "\n";
1173                         texrow.newline();
1174                 }
1175         }
1176
1177         // we don't need it for the last paragraph!!!
1178         if (next_) {
1179                 os << '\n';
1180                 texrow.newline();
1181         } else {
1182                 // Since \selectlanguage write the language to the aux file,
1183                 // we need to reset the language at the end of footnote or
1184                 // float.
1185
1186                 if (language->babel() != doc_language->babel()) {
1187                         if (lyxrc.language_command_end.empty())
1188                                 os << subst(lyxrc.language_command_begin,
1189                                             "$$lang",
1190                                             doc_language->babel())
1191                                    << endl;
1192                         else
1193                                 os << subst(lyxrc.language_command_end,
1194                                             "$$lang",
1195                                             language->babel())
1196                                    << endl;
1197                         texrow.newline();
1198                 }
1199         }
1200
1201         lyxerr[Debug::LATEX] << "TeXOnePar...done " << next_ << endl;
1202         return next_;
1203 }
1204
1205
1206 // This could go to ParagraphParameters if we want to
1207 int Paragraph::startTeXParParams(BufferParams const & bparams,
1208                                  ostream & os, bool moving_arg) const
1209 {
1210         int column = 0;
1211
1212         if (params().noindent()) {
1213                 os << "\\noindent ";
1214                 column += 10;
1215         }
1216
1217         switch (params().align()) {
1218         case LYX_ALIGN_NONE:
1219         case LYX_ALIGN_BLOCK:
1220         case LYX_ALIGN_LAYOUT:
1221         case LYX_ALIGN_SPECIAL:
1222                 break;
1223         case LYX_ALIGN_LEFT:
1224         case LYX_ALIGN_RIGHT:
1225         case LYX_ALIGN_CENTER:
1226                 if (moving_arg) {
1227                         os << "\\protect";
1228                         column = 8;
1229                 }
1230                 break;
1231         }
1232
1233         switch (params().align()) {
1234         case LYX_ALIGN_NONE:
1235         case LYX_ALIGN_BLOCK:
1236         case LYX_ALIGN_LAYOUT:
1237         case LYX_ALIGN_SPECIAL:
1238                 break;
1239         case LYX_ALIGN_LEFT:
1240                 if (getParLanguage(bparams)->babel() != "hebrew") {
1241                         os << "\\begin{flushleft}";
1242                         column += 17;
1243                 } else {
1244                         os << "\\begin{flushright}";
1245                         column += 18;
1246                 }
1247                 break;
1248         case LYX_ALIGN_RIGHT:
1249                 if (getParLanguage(bparams)->babel() != "hebrew") {
1250                         os << "\\begin{flushright}";
1251                         column += 18;
1252                 } else {
1253                         os << "\\begin{flushleft}";
1254                         column += 17;
1255                 }
1256                 break;
1257         case LYX_ALIGN_CENTER:
1258                 os << "\\begin{center}";
1259                 column += 14;
1260                 break;
1261         }
1262
1263         return column;
1264 }
1265
1266
1267 // This could go to ParagraphParameters if we want to
1268 int Paragraph::endTeXParParams(BufferParams const & bparams,
1269                                ostream & os, bool moving_arg) const
1270 {
1271         int column = 0;
1272
1273         switch (params().align()) {
1274         case LYX_ALIGN_NONE:
1275         case LYX_ALIGN_BLOCK:
1276         case LYX_ALIGN_LAYOUT:
1277         case LYX_ALIGN_SPECIAL:
1278                 break;
1279         case LYX_ALIGN_LEFT:
1280         case LYX_ALIGN_RIGHT:
1281         case LYX_ALIGN_CENTER:
1282                 if (moving_arg) {
1283                         os << "\\protect";
1284                         column = 8;
1285                 }
1286                 break;
1287         }
1288
1289         switch (params().align()) {
1290         case LYX_ALIGN_NONE:
1291         case LYX_ALIGN_BLOCK:
1292         case LYX_ALIGN_LAYOUT:
1293         case LYX_ALIGN_SPECIAL:
1294                 break;
1295         case LYX_ALIGN_LEFT:
1296                 if (getParLanguage(bparams)->babel() != "hebrew") {
1297                         os << "\\end{flushleft}";
1298                         column = 15;
1299                 } else {
1300                         os << "\\end{flushright}";
1301                         column = 16;
1302                 }
1303                 break;
1304         case LYX_ALIGN_RIGHT:
1305                 if (getParLanguage(bparams)->babel() != "hebrew") {
1306                         os << "\\end{flushright}";
1307                         column+= 16;
1308                 } else {
1309                         os << "\\end{flushleft}";
1310                         column = 15;
1311                 }
1312                 break;
1313         case LYX_ALIGN_CENTER:
1314                 os << "\\end{center}";
1315                 column = 12;
1316                 break;
1317         }
1318         return column;
1319 }
1320
1321
1322 // This one spits out the text of the paragraph
1323 bool Paragraph::simpleTeXOnePar(Buffer const * buf,
1324                                 BufferParams const & bparams,
1325                                 ostream & os, TexRow & texrow,
1326                                 bool moving_arg)
1327 {
1328         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
1329
1330         bool return_value = false;
1331
1332         LyXLayout_ptr style;
1333
1334         // well we have to check if we are in an inset with unlimited
1335         // lenght (all in one row) if that is true then we don't allow
1336         // any special options in the paragraph and also we don't allow
1337         // any environment other then "Standard" to be valid!
1338         bool asdefault =
1339                 (inInset() && inInset()->forceDefaultParagraphs(inInset()));
1340
1341         if (asdefault) {
1342                 style = bparams.getLyXTextClass().defaultLayout();
1343         } else {
1344                 style = layout();
1345         }
1346
1347         LyXFont basefont;
1348
1349         // Maybe we have to create a optional argument.
1350         pos_type main_body;
1351         if (style->labeltype != LABEL_MANUAL)
1352                 main_body = 0;
1353         else
1354                 main_body = beginningOfMainBody();
1355
1356         int column = 0;
1357
1358         if (main_body > 0) {
1359                 os << '[';
1360                 ++column;
1361                 basefont = getLabelFont(bparams);
1362         } else {
1363                 basefont = getLayoutFont(bparams);
1364         }
1365
1366         moving_arg |= style->needprotect;
1367
1368         // Which font is currently active?
1369         LyXFont running_font(basefont);
1370         // Do we have an open font change?
1371         bool open_font = false;
1372
1373         texrow.start(this, 0);
1374
1375         // if the paragraph is empty, the loop will not be entered at all
1376         if (empty()) {
1377                 if (style->isCommand()) {
1378                         os << '{';
1379                         ++column;
1380                 }
1381                 if (!asdefault)
1382                         column += startTeXParParams(bparams, os, moving_arg);
1383
1384         }
1385
1386         for (pos_type i = 0; i < size(); ++i) {
1387                 ++column;
1388                 // First char in paragraph or after label?
1389                 if (i == main_body) {
1390                         if (main_body > 0) {
1391                                 if (open_font) {
1392                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1393                                         open_font = false;
1394                                 }
1395                                 basefont = getLayoutFont(bparams);
1396                                 running_font = basefont;
1397                                 os << ']';
1398                                 ++column;
1399                         }
1400                         if (style->isCommand()) {
1401                                 os << '{';
1402                                 ++column;
1403                         }
1404
1405                         if (!asdefault)
1406                                 column += startTeXParParams(bparams, os,
1407                                                             moving_arg);
1408                 }
1409
1410                 value_type c = getChar(i);
1411
1412                 // Fully instantiated font
1413                 LyXFont font = getFont(bparams, i);
1414
1415                 LyXFont const last_font = running_font;
1416
1417                 // Spaces at end of font change are simulated to be
1418                 // outside font change, i.e. we write "\textXX{text} "
1419                 // rather than "\textXX{text }". (Asger)
1420                 if (open_font && c == ' ' && i <= size() - 2) {
1421                         LyXFont const & next_font = getFont(bparams, i + 1);
1422                         if (next_font != running_font
1423                             && next_font != font) {
1424                                 font = next_font;
1425                         }
1426                 }
1427
1428                 // We end font definition before blanks
1429                 if (open_font &&
1430                     (font != running_font ||
1431                      font.language() != running_font.language()))
1432                 {
1433                         column += running_font.latexWriteEndChanges(os,
1434                                                                     basefont,
1435                                                                     (i == main_body-1) ? basefont : font);
1436                         running_font = basefont;
1437                         open_font = false;
1438                 }
1439
1440                 // Blanks are printed before start of fontswitch
1441                 if (c == ' ') {
1442                         // Do not print the separation of the optional argument
1443                         if (i != main_body - 1) {
1444                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1445                                                        column, font, *style);
1446                         }
1447                 }
1448
1449                 // Do we need to change font?
1450                 if ((font != running_font ||
1451                      font.language() != running_font.language()) &&
1452                         i != main_body - 1)
1453                 {
1454                         column += font.latexWriteStartChanges(os, basefont,
1455                                                               last_font);
1456                         running_font = font;
1457                         open_font = true;
1458                 }
1459
1460                 if (c == Paragraph::META_NEWLINE) {
1461                         // newlines are handled differently here than
1462                         // the default in SimpleTeXSpecialChars().
1463                         if (!style->newline_allowed) {
1464                                 os << '\n';
1465                         } else {
1466                                 if (open_font) {
1467                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1468                                         open_font = false;
1469                                 }
1470                                 basefont = getLayoutFont(bparams);
1471                                 running_font = basefont;
1472                                 if (font.family() ==
1473                                     LyXFont::TYPEWRITER_FAMILY) {
1474                                         os << "~";
1475                                 }
1476                                 if (moving_arg)
1477                                         os << "\\protect ";
1478
1479                                 os << "\\\\\n";
1480                         }
1481                         texrow.newline();
1482                         texrow.start(this, i + 1);
1483                         column = 0;
1484                 } else {
1485                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1486                                                       os, texrow, moving_arg,
1487                                                       font, running_font,
1488                                                       basefont, open_font,
1489                                                       *style, i, column, c);
1490                 }
1491         }
1492
1493         // If we have an open font definition, we have to close it
1494         if (open_font) {
1495 #ifdef FIXED_LANGUAGE_END_DETECTION
1496                 if (next_) {
1497                         running_font
1498                                 .latexWriteEndChanges(os, basefont,
1499                                                       next_->getFont(bparams,
1500                                                       0));
1501                 } else {
1502                         running_font.latexWriteEndChanges(os, basefont,
1503                                                           basefont);
1504                 }
1505 #else
1506 #ifdef WITH_WARNINGS
1507 //#warning For now we ALWAYS have to close the foreign font settings if they are
1508 //#warning there as we start another \selectlanguage with the next paragraph if
1509 //#warning we are in need of this. This should be fixed sometime (Jug)
1510 #endif
1511                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1512 #endif
1513         }
1514
1515         // Needed if there is an optional argument but no contents.
1516         if (main_body > 0 && main_body == size()) {
1517                 os << "]~";
1518                 return_value = false;
1519         }
1520
1521         if (!asdefault) {
1522                 column += endTeXParParams(bparams, os, moving_arg);
1523         }
1524
1525         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1526         return return_value;
1527 }
1528
1529
1530 Paragraph * Paragraph::TeXEnvironment(Buffer const * buf,
1531                                             BufferParams const & bparams,
1532                                             ostream & os, TexRow & texrow)
1533 {
1534         lyxerr[Debug::LATEX] << "TeXEnvironment...     " << this << endl;
1535
1536         LyXLayout_ptr const & style = layout();
1537
1538         Language const * language = getParLanguage(bparams);
1539         Language const * doc_language = bparams.language;
1540         Language const * previous_language = previous_
1541                 ? previous_->getParLanguage(bparams) : doc_language;
1542         if (language->babel() != previous_language->babel()) {
1543
1544                 if (!lyxrc.language_command_end.empty() &&
1545                     previous_language->babel() != doc_language->babel()) {
1546                         os << subst(lyxrc.language_command_end, "$$lang",
1547                                     previous_language->babel())
1548                            << endl;
1549                         texrow.newline();
1550                 }
1551
1552                 if (lyxrc.language_command_end.empty() ||
1553                     language->babel() != doc_language->babel()) {
1554                         os << subst(lyxrc.language_command_begin, "$$lang",
1555                                     language->babel())
1556                            << endl;
1557                         texrow.newline();
1558                 }
1559         }
1560
1561         bool leftindent_open = false;
1562         if (!params().leftIndent().zero()) {
1563                 os << "\\begin{LyXParagraphLeftIndent}{" <<
1564                         params().leftIndent().asLatexString() << "}\n";
1565                 texrow.newline();
1566                 leftindent_open = true;
1567         }
1568
1569         if (style->isEnvironment()) {
1570                 if (style->latextype == LATEX_LIST_ENVIRONMENT) {
1571                         os << "\\begin{" << style->latexname() << "}{"
1572                            << params().labelWidthString() << "}\n";
1573                 } else if (style->labeltype == LABEL_BIBLIO) {
1574                         // ale970405
1575                         os << "\\begin{" << style->latexname() << "}{"
1576                            <<  bibitemWidest(buf)
1577                            << "}\n";
1578                 } else if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
1579                         os << "\\begin{" << style->latexname() << '}'
1580                            << style->latexparam() << '\n';
1581                 } else
1582                         os << "\\begin{" << style->latexname() << '}'
1583                            << style->latexparam() << '\n';
1584                 texrow.newline();
1585         }
1586         Paragraph * par = this;
1587         do {
1588                 par = par->TeXOnePar(buf, bparams, os, texrow, false);
1589
1590                 if (par && par->params().depth() > params().depth()) {
1591                             if (par->layout()->isParagraph()) {
1592
1593                             // Thinko!
1594                             // How to handle this? (Lgb)
1595                             //&& !suffixIs(os, "\n\n")
1596                                     //) {
1597                                 // There should be at least one '\n' already
1598                                 // but we need there to be two for Standard
1599                                 // paragraphs that are depth-increment'ed to be
1600                                 // output correctly.  However, tables can
1601                                 // also be paragraphs so don't adjust them.
1602                                 // ARRae
1603                                 // Thinkee:
1604                                 // Will it ever harm to have one '\n' too
1605                                 // many? i.e. that we sometimes will have
1606                                 // three in a row. (Lgb)
1607                                 os << '\n';
1608                                 texrow.newline();
1609                         }
1610                         par = par->pimpl_->TeXDeeper(buf, bparams, os, texrow);
1611                 }
1612         } while (par
1613                  && par->layout() == layout()
1614                  && par->params().depth() == params().depth()
1615                  && par->params().leftIndent() == params().leftIndent());
1616
1617         if (style->isEnvironment()) {
1618                 os << "\\end{" << style->latexname() << "}\n";
1619                 texrow.newline();
1620         }
1621
1622         if (leftindent_open) {
1623                 os << "\\end{LyXParagraphLeftIndent}\n";
1624                 texrow.newline();
1625         }
1626
1627         lyxerr[Debug::LATEX] << "TeXEnvironment...done " << par << endl;
1628         return par;  // ale970302
1629 }
1630
1631
1632 bool Paragraph::isHfill(pos_type pos) const
1633 {
1634         return IsHfillChar(getChar(pos));
1635 }
1636
1637
1638 bool Paragraph::isInset(pos_type pos) const
1639 {
1640         return IsInsetChar(getChar(pos));
1641 }
1642
1643
1644 bool Paragraph::isNewline(pos_type pos) const
1645 {
1646         return pos >= 0 && IsNewlineChar(getChar(pos));
1647 }
1648
1649
1650 bool Paragraph::isSeparator(pos_type pos) const
1651 {
1652         return IsSeparatorChar(getChar(pos));
1653 }
1654
1655
1656 bool Paragraph::isLineSeparator(pos_type pos) const
1657 {
1658         value_type const c = getChar(pos);
1659         return IsLineSeparatorChar(c)
1660                 || (IsInsetChar(c) && getInset(pos) &&
1661                 getInset(pos)->isLineSeparator());
1662 }
1663
1664
1665 bool Paragraph::isKomma(pos_type pos) const
1666 {
1667         return IsKommaChar(getChar(pos));
1668 }
1669
1670
1671 /// Used by the spellchecker
1672 bool Paragraph::isLetter(pos_type pos) const
1673 {
1674         value_type const c = getChar(pos);
1675         if (IsLetterChar(c))
1676                 return true;
1677         if (isInset(pos))
1678                 return getInset(pos)->isLetter();
1679         // We want to pass the ' and escape chars to ispell
1680         string const extra = lyxrc.isp_esc_chars + '\'';
1681         return contains(extra, c);
1682 }
1683
1684
1685 bool Paragraph::isWord(pos_type pos) const
1686 {
1687         return IsWordChar(getChar(pos)) ;
1688 }
1689
1690
1691 Language const *
1692 Paragraph::getParLanguage(BufferParams const & bparams) const
1693 {
1694         if (!empty()) {
1695 #ifndef INHERIT_LANGUAGE
1696                 return getFirstFontSettings().language();
1697 #else
1698                 Language const * lang = getFirstFontSettings().language();
1699 #ifdef WITH_WARNINGS
1700 #warning We should make this somewhat better, any ideas? (Jug)
1701 #endif
1702                 if (lang == inherit_language || lang == ignore_language)
1703                         lang = bparams.language;
1704                 return lang;
1705 #endif
1706         } else if (previous_)
1707                 return previous_->getParLanguage(bparams);
1708         else
1709                 return bparams.language;
1710 }
1711
1712
1713 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1714 {
1715         return lyxrc.rtl_support
1716                 && getParLanguage(bparams)->RightToLeft()
1717                 && !(inInset() && inInset()->owner() &&
1718                      inInset()->owner()->lyxCode() == Inset::ERT_CODE);
1719 }
1720
1721
1722 void Paragraph::changeLanguage(BufferParams const & bparams,
1723                                   Language const * from, Language const * to)
1724 {
1725         for (pos_type i = 0; i < size(); ++i) {
1726                 LyXFont font = getFontSettings(bparams, i);
1727                 if (font.language() == from) {
1728                         font.setLanguage(to);
1729                         setFont(i, font);
1730                 }
1731         }
1732 }
1733
1734
1735 bool Paragraph::isMultiLingual(BufferParams const & bparams)
1736 {
1737         Language const * doc_language = bparams.language;
1738         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1739         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1740
1741         for (; cit != end; ++cit)
1742                 if (cit->font().language() != ignore_language &&
1743                     cit->font().language() != latex_language &&
1744 #ifdef INHERIT_LANGUAGE
1745                         cit->font().language() != inherit_language &&
1746 #endif
1747                         cit->font().language() != doc_language)
1748                         return true;
1749         return false;
1750 }
1751
1752
1753 // Convert the paragraph to a string.
1754 // Used for building the table of contents
1755 string const Paragraph::asString(Buffer const * buffer, bool label)
1756 {
1757         BufferParams const & bparams = buffer->params;
1758         string s;
1759         if (label && !params().labelString().empty())
1760                 s += params().labelString() + ' ';
1761         string::size_type const len = s.size();
1762
1763         for (pos_type i = 0; i < size(); ++i) {
1764                 value_type c = getChar(i);
1765                 if (IsPrintable(c))
1766                         s += c;
1767                 else if (c == META_INSET &&
1768                          getInset(i)->lyxCode() == Inset::MATH_CODE) {
1769                         ostringstream ost;
1770                         getInset(i)->ascii(buffer, ost);
1771                         s += subst(ost.str().c_str(),'\n',' ');
1772                 }
1773         }
1774
1775         if (isRightToLeftPar(bparams))
1776                 reverse(s.begin() + len,s.end());
1777
1778         return s;
1779 }
1780
1781
1782 string const Paragraph::asString(Buffer const * buffer,
1783                                  pos_type beg, pos_type end, bool label)
1784 {
1785         ostringstream ost;
1786
1787         if (beg == 0 && label && !params().labelString().empty())
1788                 ost << params().labelString() << ' ';
1789
1790         for (pos_type i = beg; i < end; ++i) {
1791                 value_type const c = getUChar(buffer->params, i);
1792                 if (IsPrintable(c))
1793                         ost << c;
1794                 else if (c == META_NEWLINE)
1795                         ost << '\n';
1796                 else if (c == META_HFILL)
1797                         ost << '\t';
1798                 else if (c == META_INSET) {
1799                         getInset(i)->ascii(buffer, ost);
1800                 }
1801         }
1802
1803         return ost.str().c_str();
1804 }
1805
1806
1807 void Paragraph::setInsetOwner(Inset * i)
1808 {
1809         pimpl_->inset_owner = i;
1810         InsetList::iterator it = insetlist.begin();
1811         InsetList::iterator end = insetlist.end();
1812         for (; it != end; ++it) {
1813                 if (it.getInset())
1814                         it.getInset()->setOwner(i);
1815         }
1816 }
1817
1818
1819 void Paragraph::deleteInsetsLyXText(BufferView * bv)
1820 {
1821         // then the insets
1822         insetlist.deleteInsetsLyXText(bv);
1823 }
1824
1825
1826 void Paragraph::resizeInsetsLyXText(BufferView * bv)
1827 {
1828         // then the insets
1829         insetlist.resizeInsetsLyXText(bv);
1830 }
1831
1832
1833 void Paragraph::setContentsFromPar(Paragraph * par)
1834 {
1835         pimpl_->setContentsFromPar(par);
1836 }
1837
1838
1839 lyx::pos_type Paragraph::size() const
1840 {
1841         return pimpl_->size();
1842 }
1843
1844
1845 bool Paragraph::empty() const
1846 {
1847         return pimpl_->empty();
1848 }
1849
1850
1851 Paragraph::value_type Paragraph::getChar(pos_type pos) const
1852 {
1853         return pimpl_->getChar(pos);
1854 }
1855
1856
1857 int Paragraph::id() const
1858 {
1859         return pimpl_->id_;
1860 }
1861
1862
1863 LyXLayout_ptr const & Paragraph::layout() const
1864 {
1865         return layout_;
1866 }
1867
1868
1869 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1870 {
1871         layout_ = new_layout;
1872 }
1873
1874
1875 bool Paragraph::isFirstInSequence() const
1876 {
1877         Paragraph const * dhook = depthHook(getDepth());
1878         return (dhook == this
1879                 || dhook->layout() != layout()
1880                 || dhook->getDepth() != getDepth());
1881 }
1882
1883
1884 Inset * Paragraph::inInset() const
1885 {
1886         return pimpl_->inset_owner;
1887 }
1888
1889
1890 void Paragraph::clearContents()
1891 {
1892         pimpl_->clear();
1893 }
1894
1895 void Paragraph::setChar(pos_type pos, value_type c)
1896 {
1897         pimpl_->setChar(pos, c);
1898 }
1899
1900
1901 ParagraphParameters & Paragraph::params()
1902 {
1903         return pimpl_->params;
1904 }
1905
1906
1907 ParagraphParameters const & Paragraph::params() const
1908 {
1909         return pimpl_->params;
1910 }
1911
1912
1913 Paragraph * Paragraph::getParFromID(int id) const
1914 {
1915         return pimpl_->getParFromID(id);
1916 }
1917
1918
1919 bool Paragraph::isFreeSpacing() const
1920 {
1921         // for now we just need this, later should we need this in some
1922         // other way we can always add a function to Inset::() too.
1923         if (pimpl_->inset_owner && pimpl_->inset_owner->owner())
1924                 return (pimpl_->inset_owner->owner()->lyxCode() == Inset::ERT_CODE);
1925         return false;
1926 }