src/paragraph_pimpl.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "paragraph_pimpl.h"
  18 #include "texrow.h"
  19 #include "bufferparams.h"
  20 #include "encoding.h"
  21 #include "lyxrc.h"
  22 #include "debug.h"
  23 #include "support/LAssert.h"
  24
  25 extern int tex_code_break_column;
  26
  27
  28 // Initialization of the counter for the paragraph id's,
  29 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  30
  31 // Initialize static member.
  32 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  33
  34
  35 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  36         : owner_(owner)
  37 {
  38         inset_owner = 0;
  39         id_ = paragraph_id++;
  40 }
  41
  42
  43 Paragraph::Pimpl::Pimpl(Paragraph::Pimpl const & p, Paragraph * owner,
  44                         bool same_ids)
  45         : params(p.params), owner_(owner)
  46 {
  47         inset_owner = p.inset_owner;
  48         text = p.text;
  49         fontlist = p.fontlist;
  50         if (same_ids)
  51                 id_ = p.id_;
  52         else
  53                 id_ = paragraph_id++;
  54 }
  55
  56
  57 void Paragraph::Pimpl::clear()
  58 {
  59         text.clear();
  60 }
  61
  62
  63 void Paragraph::Pimpl::setContentsFromPar(Paragraph const * par)
  64 {
  65         lyx::Assert(par);
  66         text = par->pimpl_->text;
  67 }
  68
  69
  70 Paragraph::value_type
  71 Paragraph::Pimpl::getChar(Paragraph::size_type pos) const
  72 {
  73         lyx::Assert(pos <= size());
  74         // This is stronger, and I belive that this is the assertion
  75         // that we should really use. (Lgb)
  76         //Assert(pos < size());
  77
  78         // Then this has no meaning. (Lgb)
  79         if (!size() || pos == size()) return '\0';
  80
  81         return text[pos];
  82 }
  83
  84
  85 void Paragraph::Pimpl::setChar(Paragraph::size_type pos,
  86                                Paragraph::value_type c)
  87 {
  88         text[pos] = c;
  89 }
  90
  91
  92 void Paragraph::Pimpl::insertChar(Paragraph::size_type pos,
  93                                   Paragraph::value_type c,
  94                                   LyXFont const & font)
  95 {
  96         lyx::Assert(pos <= size());
  97
  98         text.insert(text.begin() + pos, c);
  99
 100         // Update the font table.
 101         FontTable search_font(pos, LyXFont());
 102         for (FontList::iterator it = std::lower_bound(fontlist.begin(),
 103                                                       fontlist.end(),
 104                                                       search_font, matchFT());
 105              it != fontlist.end(); ++it)
 106                 it->pos(it->pos() + 1);
 107
 108         // Update the inset table.
 109         InsetTable search_inset(pos, 0);
 110         for (InsetList::iterator it = std::lower_bound(owner_->insetlist.begin(),
 111                                                        owner_->insetlist.end(),
 112                                                        search_inset, matchIT());
 113              it != owner_->insetlist.end(); ++it)
 114                 ++it->pos;
 115
 116         owner_->setFont(pos, font);
 117 }
 118
 119
 120 void Paragraph::Pimpl::insertInset(Paragraph::size_type pos,
 121                                    Inset * inset, LyXFont const & font)
 122 {
 123         lyx::Assert(inset);
 124         lyx::Assert(pos <= size());
 125
 126         insertChar(pos, META_INSET, font);
 127         lyx::Assert(text[pos] == META_INSET);
 128
 129         // Add a new entry in the inset table.
 130         InsetTable search_inset(pos, 0);
 131         InsetList::iterator it = std::lower_bound(owner_->insetlist.begin(),
 132                                                   owner_->insetlist.end(),
 133                                                   search_inset, matchIT());
 134         if (it != owner_->insetlist.end() && it->pos == pos) {
 135                 lyxerr << "ERROR (Paragraph::InsertInset): "
 136                         "there is an inset in position: " << pos << std::endl;
 137         } else {
 138                 owner_->insetlist.insert(it, InsetTable(pos, inset));
 139         }
 140
 141         if (inset_owner)
 142                 inset->setOwner(inset_owner);
 143 }
 144
 145
 146 void Paragraph::Pimpl::erase(Paragraph::size_type pos)
 147 {
 148         lyx::Assert(pos < size());
 149         // if it is an inset, delete the inset entry
 150         if (text[pos] == Paragraph::META_INSET) {
 151                 // find the entry
 152                 InsetTable search_inset(pos, 0);
 153                 InsetList::iterator it =
 154                         std::lower_bound(owner_->insetlist.begin(),
 155                                          owner_->insetlist.end(),
 156                                          search_inset, matchIT());
 157                 if (it != owner_->insetlist.end() && it->pos == pos) {
 158                         delete it->inset;
 159                         owner_->insetlist.erase(it);
 160                 }
 161         }
 162
 163         text.erase(text.begin() + pos);
 164
 165         // Erase entries in the tables.
 166         FontTable search_font(pos, LyXFont());
 167
 168         FontList::iterator it =
 169                 std::lower_bound(fontlist.begin(),
 170                             fontlist.end(),
 171                             search_font, matchFT());
 172         if (it != fontlist.end() && it->pos() == pos &&
 173             (pos == 0 ||
 174              (it != fontlist.begin()
 175               && boost::prior(it)->pos() == pos - 1))) {
 176                 // If it is a multi-character font
 177                 // entry, we just make it smaller
 178                 // (see update below), otherwise we
 179                 // should delete it.
 180                 unsigned int const i = it - fontlist.begin();
 181                 fontlist.erase(fontlist.begin() + i);
 182                 it = fontlist.begin() + i;
 183                 if (i > 0 && i < fontlist.size() &&
 184                     fontlist[i - 1].font() == fontlist[i].font()) {
 185                         fontlist.erase(fontlist.begin() + i - 1);
 186                         it = fontlist.begin() + i - 1;
 187                 }
 188         }
 189
 190         // Update all other entries.
 191         FontList::iterator fend = fontlist.end();
 192         for (; it != fend; ++it)
 193                 it->pos(it->pos() - 1);
 194
 195         // Update the inset table.
 196         InsetTable search_inset(pos, 0);
 197         InsetList::iterator lend = owner_->insetlist.end();
 198         for (InsetList::iterator it =
 199                      std::upper_bound(owner_->insetlist.begin(),
 200                                       lend,
 201                                       search_inset, matchIT());
 202              it != lend; ++it)
 203                 --it->pos;
 204 }
 205
 206
 207 void Paragraph::Pimpl::simpleTeXBlanks(std::ostream & os, TexRow & texrow,
 208                                        Paragraph::size_type const i,
 209                                        int & column, LyXFont const & font,
 210                                        LyXLayout const & style)
 211 {
 212         if (style.pass_thru) return;
 213         if (column > tex_code_break_column
 214             && i
 215             && getChar(i - 1) != ' '
 216             && (i < size() - 1)
 217             // same in FreeSpacing mode
 218             && !style.free_spacing
 219             // In typewriter mode, we want to avoid
 220             // ! . ? : at the end of a line
 221             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 222                  && (getChar(i - 1) == '.'
 223                      || getChar(i - 1) == '?'
 224                      || getChar(i - 1) == ':'
 225                      || getChar(i - 1) == '!'))) {
 226                 if (tex_code_break_column == 0) {
 227                         // in batchmode we need LaTeX to still
 228                         // see it as a space not as an extra '\n'
 229                         os << " %\n";
 230                 } else {
 231                         os << '\n';
 232                 }
 233                 texrow.newline();
 234                 texrow.start(owner_, i + 1);
 235                 column = 0;
 236         } else if (style.free_spacing) {
 237                 os << '~';
 238         } else {
 239                 os << ' ';
 240         }
 241 }
 242
 243
 244 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 245                                              BufferParams const & bparams,
 246                                              std::ostream & os,
 247                                              TexRow & texrow,
 248                                              bool moving_arg,
 249                                              LyXFont & font,
 250                                              LyXFont & running_font,
 251                                              LyXFont & basefont,
 252                                              bool & open_font,
 253                                              LyXLayout const & style,
 254                                              Paragraph::size_type & i,
 255                                              int & column,
 256                                              Paragraph::value_type const c)
 257 {
 258         if (style.pass_thru) {
 259                 if (c != '\0') os << c;
 260                 return;
 261         }
 262         // Two major modes:  LaTeX or plain
 263         // Handle here those cases common to both modes
 264         // and then split to handle the two modes separately.
 265         switch (c) {
 266         case Paragraph::META_INSET: {
 267                 Inset * inset = owner_->getInset(i);
 268                 if (inset) {
 269                         bool close = false;
 270                         int const len = os.tellp();
 271                         //ostream::pos_type const len = os.tellp();
 272                         if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 273                              || inset->lyxCode() == Inset::MATH_CODE
 274                              || inset->lyxCode() == Inset::URL_CODE)
 275                             && running_font.isRightToLeft()) {
 276                                 os << "\\L{";
 277                                 close = true;
 278                         }
 279
 280                         int tmp = inset->latex(buf, os, moving_arg,
 281                                                style.free_spacing);
 282
 283                         if (close)
 284                                 os << "}";
 285
 286                         if (tmp) {
 287                                 column = 0;
 288                         } else {
 289                                 column += int(os.tellp()) - len;
 290                         }
 291                         for (; tmp--;) {
 292                                 texrow.newline();
 293                         }
 294                 }
 295         }
 296         break;
 297
 298         case Paragraph::META_NEWLINE:
 299                 if (open_font) {
 300                         column += running_font.latexWriteEndChanges(os,
 301                                                                     basefont,
 302                                                                     basefont);
 303                         open_font = false;
 304                 }
 305                 basefont = owner_->getLayoutFont(bparams);
 306                 running_font = basefont;
 307                 break;
 308
 309         case Paragraph::META_HFILL:
 310                 os << "\\hfill{}";
 311                 column += 7;
 312                 break;
 313
 314         default:
 315                 // And now for the special cases within each mode
 316
 317                 switch (c) {
 318                 case '\\':
 319                         os << "\\textbackslash{}";
 320                         column += 15;
 321                         break;
 322
 323                 case '°': case '±': case '²': case '³':
 324                 case '×': case '÷': case '¹': case 'ª':
 325                 case 'º': case '¬': case 'µ':
 326                         if (bparams.inputenc == "latin1" ||
 327                             (bparams.inputenc == "auto" &&
 328                              font.language()->encoding()->LatexName()
 329                              == "latin1")) {
 330                                 os << "\\ensuremath{"
 331                                    << c
 332                                    << '}';
 333                                 column += 13;
 334                         } else {
 335                                 os << c;
 336                         }
 337                         break;
 338
 339                 case '|': case '<': case '>':
 340                         // In T1 encoding, these characters exist
 341                         if (lyxrc.fontenc == "T1") {
 342                                 os << c;
 343                                 //... but we should avoid ligatures
 344                                 if ((c == '>' || c == '<')
 345                                     && i <= size() - 2
 346                                     && getChar(i + 1) == c) {
 347                                         //os << "\\textcompwordmark{}";
 348                                         // Jean-Marc, have a look at
 349                                         // this. I think this works
 350                                         // equally well:
 351                                         os << "\\,{}";
 352                                         // Lgb
 353                                         column += 19;
 354                                 }
 355                                 break;
 356                         }
 357                         // Typewriter font also has them
 358                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 359                                 os << c;
 360                                 break;
 361                         }
 362                         // Otherwise, we use what LaTeX
 363                         // provides us.
 364                         switch (c) {
 365                         case '<':
 366                                 os << "\\textless{}";
 367                                 column += 10;
 368                                 break;
 369                         case '>':
 370                                 os << "\\textgreater{}";
 371                                 column += 13;
 372                                 break;
 373                         case '|':
 374                                 os << "\\textbar{}";
 375                                 column += 9;
 376                                 break;
 377                         }
 378                         break;
 379
 380                 case '-': // "--" in Typewriter mode -> "-{}-"
 381                         if (i <= size() - 2
 382                             && getChar(i + 1) == '-'
 383                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 384                                 os << "-{}";
 385                                 column += 2;
 386                         } else {
 387                                 os << '-';
 388                         }
 389                         break;
 390
 391                 case '\"':
 392                         os << "\\char`\\\"{}";
 393                         column += 9;
 394                         break;
 395
 396                 case '£':
 397                         if (bparams.inputenc == "default") {
 398                                 os << "\\pounds{}";
 399                                 column += 8;
 400                         } else {
 401                                 os << c;
 402                         }
 403                         break;
 404
 405                 case '$': case '&':
 406                 case '%': case '#': case '{':
 407                 case '}': case '_':
 408                         os << '\\' << c;
 409                         column += 1;
 410                         break;
 411
 412                 case '~':
 413                         os << "\\textasciitilde{}";
 414                         column += 16;
 415                         break;
 416
 417                 case '^':
 418                         os << "\\textasciicircum{}";
 419                         column += 17;
 420                         break;
 421
 422                 case '*': case '[': case ']':
 423                         // avoid being mistaken for optional arguments
 424                         os << '{' << c << '}';
 425                         column += 2;
 426                         break;
 427
 428                 case ' ':
 429                         // Blanks are printed before font switching.
 430                         // Sure? I am not! (try nice-latex)
 431                         // I am sure it's correct. LyX might be smarter
 432                         // in the future, but for now, nothing wrong is
 433                         // written. (Asger)
 434                         break;
 435
 436                 default:
 437                         /* idea for labels --- begin*/
 438                         // Check for "LyX"
 439                         if (c ==  'L'
 440                             && i <= size() - 3
 441                             && font.family() != LyXFont::TYPEWRITER_FAMILY
 442                             && getChar(i + 1) == 'y'
 443                             && getChar(i + 2) == 'X') {
 444                                 os << "\\LyX{}";
 445                                 i += 2;
 446                                 column += 5;
 447                         }
 448                         // Check for "TeX"
 449                         else if (c == 'T'
 450                                  && i <= size() - 3
 451                                  && font.family() != LyXFont::TYPEWRITER_FAMILY
 452                                  && getChar(i + 1) == 'e'
 453                                  && getChar(i + 2) == 'X') {
 454                                 os << "\\TeX{}";
 455                                 i += 2;
 456                                 column += 5;
 457                         }
 458                         // Check for "LaTeX2e"
 459                         else if (c == 'L'
 460                                  && i <= size() - 7
 461                                  && font.family() != LyXFont::TYPEWRITER_FAMILY
 462                                  && getChar(i + 1) == 'a'
 463                                  && getChar(i + 2) == 'T'
 464                                  && getChar(i + 3) == 'e'
 465                                  && getChar(i + 4) == 'X'
 466                                  && getChar(i + 5) == '2'
 467                                  && getChar(i + 6) == 'e') {
 468                                 os << "\\LaTeXe{}";
 469                                 i += 6;
 470                                 column += 8;
 471                         }
 472                         // Check for "LaTeX"
 473                         else if (c == 'L'
 474                                  && i <= size() - 5
 475                                  && font.family() != LyXFont::TYPEWRITER_FAMILY
 476                                  && getChar(i + 1) == 'a'
 477                                  && getChar(i + 2) == 'T'
 478                                  && getChar(i + 3) == 'e'
 479                                  && getChar(i + 4) == 'X') {
 480                                 os << "\\LaTeX{}";
 481                                 i += 4;
 482                                 column += 7;
 483                                 /* idea for labels --- end*/
 484                         } else if (c != '\0') {
 485                                 os << c;
 486                         }
 487                         break;
 488                 }
 489         }
 490 }
 491
 492
 493
 494 Paragraph * Paragraph::Pimpl::TeXDeeper(Buffer const * buf,
 495                                         BufferParams const & bparams,
 496                                         std::ostream & os, TexRow & texrow)
 497 {
 498         lyxerr[Debug::LATEX] << "TeXDeeper...     " << this << std::endl;
 499         Paragraph * par = owner_;
 500
 501         while (par && par->params().depth() == owner_->params().depth()) {
 502                 if (textclasslist.Style(bparams.textclass,
 503                                         par->layout).isEnvironment()) {
 504                         par = par->TeXEnvironment(buf, bparams,
 505                                                   os, texrow);
 506                 } else {
 507                         par = par->TeXOnePar(buf, bparams,
 508                                              os, texrow, false);
 509                 }
 510         }
 511         lyxerr[Debug::LATEX] << "TeXDeeper...done " << par << std::endl;
 512
 513         return par;
 514 }
 515
 516
 517 Paragraph * Paragraph::Pimpl::getParFromID(int id) const
 518 {
 519         InsetList::const_iterator cit = owner_->insetlist.begin();
 520         InsetList::const_iterator lend = owner_->insetlist.end();
 521         Paragraph * result;
 522         for (; cit != lend; ++cit) {
 523                 if ((result = cit->inset->getParFromID(id)))
 524                         return result;
 525         }
 526         return 0;
 527 }
 528
 529
 530 LyXFont const Paragraph::Pimpl::realizeFont(LyXFont const & font,
 531                                             BufferParams const & bparams) const
 532 {
 533         LyXFont tmpfont(font);
 534
 535         // check for environment font information
 536         char par_depth = owner_->getDepth();
 537         Paragraph const * par = owner_;
 538         while (par && par->getDepth() && !tmpfont.resolved()) {
 539                 par = par->outerHook();
 540                 if (par) {
 541 #ifndef INHERIT_LANGUAGE
 542                         tmpfont.realize(textclasslist.
 543                                         Style(bparams.textclass,
 544                                               par->getLayout()).font);
 545 #else
 546                         tmpfont.realize(textclasslist.
 547                                         Style(bparams.textclass,
 548                                               par->getLayout()).font, bparams.language);
 549 #endif
 550                         par_depth = par->getDepth();
 551                 }
 552         }
 553
 554 #ifndef INHERIT_LANGUAGE
 555         tmpfont.realize(textclasslist.TextClass(bparams.textclass)
 556                         .defaultfont());
 557 #else
 558         tmpfont.realize(textclasslist.TextClass(bparams.textclass)
 559                         .defaultfont(), bparams.language);
 560 #endif
 561         return tmpfont;
 562 }