src/text.C

   1 /**
   2  * \file src/text.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author John Levon
  10  * \author André Pönitz
  11  * \author Dekel Tsur
  12  * \author Jürgen Vigna
  13  *
  14  * Full author contact details are available in file CREDITS.
  15  */
  16
  17 #include <config.h>
  18
  19 #include "lyxtext.h"
  20
  21 #include "author.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferparams.h"
  25 #include "BufferView.h"
  26 #include "cursor.h"
  27 #include "pariterator.h"
  28 #include "coordcache.h"
  29 #include "CutAndPaste.h"
  30 #include "debug.h"
  31 #include "dispatchresult.h"
  32 #include "encoding.h"
  33 #include "errorlist.h"
  34 #include "funcrequest.h"
  35 #include "factory.h"
  36 #include "FontIterator.h"
  37 #include "gettext.h"
  38 #include "language.h"
  39 #include "LColor.h"
  40 #include "lyxlength.h"
  41 #include "lyxlex.h"
  42 #include "lyxrc.h"
  43 #include "lyxrow.h"
  44 #include "lyxrow_funcs.h"
  45 #include "metricsinfo.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "rowpainter.h"
  50 #include "undo.h"
  51 #include "vspace.h"
  52 #include "WordLangTuple.h"
  53
  54 #include "frontends/Application.h"
  55 #include "frontends/FontLoader.h"
  56 #include "frontends/FontMetrics.h"
  57 #include "frontends/Painter.h"
  58
  59 #include "insets/insettext.h"
  60 #include "insets/insetbibitem.h"
  61 #include "insets/insethfill.h"
  62 #include "insets/insetlatexaccent.h"
  63 #include "insets/insetline.h"
  64 #include "insets/insetnewline.h"
  65 #include "insets/insetpagebreak.h"
  66 #include "insets/insetoptarg.h"
  67 #include "insets/insetspace.h"
  68 #include "insets/insetspecialchar.h"
  69 #include "insets/insettabular.h"
  70
  71 #include "support/lstrings.h"
  72 #include "support/textutils.h"
  73 #include "support/convert.h"
  74
  75 #include <boost/current_function.hpp>
  76
  77 #include <sstream>
  78
  79 using lyx::docstring;
  80 using lyx::char_type;
  81 using lyx::pit_type;
  82 using lyx::pos_type;
  83 using lyx::word_location;
  84
  85 using lyx::support::bformat;
  86 using lyx::support::contains;
  87 using lyx::support::lowercase;
  88 using lyx::support::split;
  89 using lyx::support::uppercase;
  90
  91 using lyx::cap::cutSelection;
  92 using lyx::cap::pasteParagraphList;
  93
  94 using lyx::frontend::FontMetrics;
  95
  96 using std::auto_ptr;
  97 using std::advance;
  98 using std::distance;
  99 using std::max;
 100 using std::min;
 101 using std::endl;
 102 using std::string;
 103
 104
 105 namespace {
 106
 107 int numberOfSeparators(Paragraph const & par, Row const & row)
 108 {
 109         pos_type const first = max(row.pos(), par.beginOfBody());
 110         pos_type const last = row.endpos() - 1;
 111         int n = 0;
 112         for (pos_type p = first; p < last; ++p) {
 113                 if (par.isSeparator(p))
 114                         ++n;
 115         }
 116         return n;
 117 }
 118
 119
 120 int numberOfLabelHfills(Paragraph const & par, Row const & row)
 121 {
 122         pos_type last = row.endpos() - 1;
 123         pos_type first = row.pos();
 124
 125         // hfill *DO* count at the beginning of paragraphs!
 126         if (first) {
 127                 while (first < last && par.isHfill(first))
 128                         ++first;
 129         }
 130
 131         last = min(last, par.beginOfBody());
 132         int n = 0;
 133         for (pos_type p = first; p < last; ++p) {
 134                 if (par.isHfill(p))
 135                         ++n;
 136         }
 137         return n;
 138 }
 139
 140
 141 int numberOfHfills(Paragraph const & par, Row const & row)
 142 {
 143         pos_type const last = row.endpos();
 144         pos_type first = row.pos();
 145
 146         // hfill *DO* count at the beginning of paragraphs!
 147         if (first) {
 148                 while (first < last && par.isHfill(first))
 149                         ++first;
 150         }
 151
 152         first = max(first, par.beginOfBody());
 153
 154         int n = 0;
 155         for (pos_type p = first; p < last; ++p) {
 156                 if (par.isHfill(p))
 157                         ++n;
 158         }
 159         return n;
 160 }
 161
 162
 163 void readParToken(Buffer const & buf, Paragraph & par, LyXLex & lex,
 164         string const & token, LyXFont & font, Change & change, ErrorList & errorList)
 165 {
 166         BufferParams const & bp = buf.params();
 167
 168         if (token[0] != '\\') {
 169 #if 0
 170                 string::const_iterator cit = token.begin();
 171                 for (; cit != token.end(); ++cit)
 172                         par.insertChar(par.size(), (*cit), font, change);
 173 #else
 174                 lyx::docstring dstr = lex.getDocString();
 175                 lyx::docstring::const_iterator cit = dstr.begin();
 176                 lyx::docstring::const_iterator cend = dstr.end();
 177                 for (; cit != cend; ++cit)
 178                         par.insertChar(par.size(), *cit, font, change);
 179 #endif
 180         } else if (token == "\\begin_layout") {
 181                 lex.eatLine();
 182                 string layoutname = lex.getString();
 183
 184                 font = LyXFont(LyXFont::ALL_INHERIT, bp.language);
 185                 change = Change();
 186
 187                 LyXTextClass const & tclass = bp.getLyXTextClass();
 188
 189                 if (layoutname.empty()) {
 190                         layoutname = tclass.defaultLayoutName();
 191                 }
 192
 193                 bool hasLayout = tclass.hasLayout(layoutname);
 194
 195                 if (!hasLayout) {
 196                         errorList.push_back(ErrorItem(_("Unknown layout"),
 197                         bformat(_("Layout '%1$s' does not exist in textclass '%2$s'\nTrying to use the default instead.\n"),
 198                         lyx::from_utf8(layoutname), lyx::from_utf8(tclass.name())), par.id(), 0, par.size()));
 199                         layoutname = tclass.defaultLayoutName();
 200                 }
 201
 202                 par.layout(bp.getLyXTextClass()[layoutname]);
 203
 204                 // Test whether the layout is obsolete.
 205                 LyXLayout_ptr const & layout = par.layout();
 206                 if (!layout->obsoleted_by().empty())
 207                         par.layout(bp.getLyXTextClass()[layout->obsoleted_by()]);
 208
 209                 par.params().read(lex);
 210
 211         } else if (token == "\\end_layout") {
 212                 lyxerr << BOOST_CURRENT_FUNCTION
 213                        << ": Solitary \\end_layout in line "
 214                        << lex.getLineNo() << "\n"
 215                        << "Missing \\begin_layout?.\n";
 216         } else if (token == "\\end_inset") {
 217                 lyxerr << BOOST_CURRENT_FUNCTION
 218                        << ": Solitary \\end_inset in line "
 219                        << lex.getLineNo() << "\n"
 220                        << "Missing \\begin_inset?.\n";
 221         } else if (token == "\\begin_inset") {
 222                 InsetBase * inset = readInset(lex, buf);
 223                 if (inset)
 224                         par.insertInset(par.size(), inset, font, change);
 225                 else {
 226                         lex.eatLine();
 227                         docstring line = lyx::from_utf8(lex.getString());
 228                         errorList.push_back(ErrorItem(_("Unknown Inset"), line,
 229                                             par.id(), 0, par.size()));
 230                 }
 231         } else if (token == "\\family") {
 232                 lex.next();
 233                 font.setLyXFamily(lex.getString());
 234         } else if (token == "\\series") {
 235                 lex.next();
 236                 font.setLyXSeries(lex.getString());
 237         } else if (token == "\\shape") {
 238                 lex.next();
 239                 font.setLyXShape(lex.getString());
 240         } else if (token == "\\size") {
 241                 lex.next();
 242                 font.setLyXSize(lex.getString());
 243         } else if (token == "\\lang") {
 244                 lex.next();
 245                 string const tok = lex.getString();
 246                 Language const * lang = languages.getLanguage(tok);
 247                 if (lang) {
 248                         font.setLanguage(lang);
 249                 } else {
 250                         font.setLanguage(bp.language);
 251                         lex.printError("Unknown language `$$Token'");
 252                 }
 253         } else if (token == "\\numeric") {
 254                 lex.next();
 255                 font.setNumber(font.setLyXMisc(lex.getString()));
 256         } else if (token == "\\emph") {
 257                 lex.next();
 258                 font.setEmph(font.setLyXMisc(lex.getString()));
 259         } else if (token == "\\bar") {
 260                 lex.next();
 261                 string const tok = lex.getString();
 262
 263                 if (tok == "under")
 264                         font.setUnderbar(LyXFont::ON);
 265                 else if (tok == "no")
 266                         font.setUnderbar(LyXFont::OFF);
 267                 else if (tok == "default")
 268                         font.setUnderbar(LyXFont::INHERIT);
 269                 else
 270                         lex.printError("Unknown bar font flag "
 271                                        "`$$Token'");
 272         } else if (token == "\\noun") {
 273                 lex.next();
 274                 font.setNoun(font.setLyXMisc(lex.getString()));
 275         } else if (token == "\\color") {
 276                 lex.next();
 277                 font.setLyXColor(lex.getString());
 278         } else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
 279
 280                 // Insets don't make sense in a free-spacing context! ---Kayvan
 281                 if (par.isFreeSpacing()) {
 282                         if (token == "\\InsetSpace")
 283                                 par.insertChar(par.size(), ' ', font, change);
 284                         else if (lex.isOK()) {
 285                                 lex.next();
 286                                 string const next_token = lex.getString();
 287                                 if (next_token == "\\-")
 288                                         par.insertChar(par.size(), '-', font, change);
 289                                 else {
 290                                         lex.printError("Token `$$Token' "
 291                                                        "is in free space "
 292                                                        "paragraph layout!");
 293                                 }
 294                         }
 295                 } else {
 296                         auto_ptr<InsetBase> inset;
 297                         if (token == "\\SpecialChar" )
 298                                 inset.reset(new InsetSpecialChar);
 299                         else
 300                                 inset.reset(new InsetSpace);
 301                         inset->read(buf, lex);
 302                         par.insertInset(par.size(), inset.release(),
 303                                         font, change);
 304                 }
 305         } else if (token == "\\i") {
 306                 auto_ptr<InsetBase> inset(new InsetLatexAccent);
 307                 inset->read(buf, lex);
 308                 par.insertInset(par.size(), inset.release(), font, change);
 309         } else if (token == "\\backslash") {
 310                 par.insertChar(par.size(), '\\', font, change);
 311         } else if (token == "\\newline") {
 312                 auto_ptr<InsetBase> inset(new InsetNewline);
 313                 inset->read(buf, lex);
 314                 par.insertInset(par.size(), inset.release(), font, change);
 315         } else if (token == "\\LyXTable") {
 316                 auto_ptr<InsetBase> inset(new InsetTabular(buf));
 317                 inset->read(buf, lex);
 318                 par.insertInset(par.size(), inset.release(), font, change);
 319         } else if (token == "\\bibitem") {
 320                 InsetCommandParams p("bibitem", "dummy");
 321                 auto_ptr<InsetBibitem> inset(new InsetBibitem(p));
 322                 inset->read(buf, lex);
 323                 par.insertInset(par.size(), inset.release(), font, change);
 324         } else if (token == "\\hfill") {
 325                 par.insertInset(par.size(), new InsetHFill, font, change);
 326         } else if (token == "\\lyxline") {
 327                 par.insertInset(par.size(), new InsetLine, font, change);
 328         } else if (token == "\\newpage") {
 329                 par.insertInset(par.size(), new InsetPagebreak, font, change);
 330         } else if (token == "\\change_unchanged") {
 331                 // Hack ! Needed for empty paragraphs :/
 332                 // FIXME: change tracking (MG)
 333                 // set empty 'par' to INSERTED???
 334                 change = Change(Change::UNCHANGED);
 335         } else if (token == "\\change_inserted") {
 336                 lex.eatLine();
 337                 std::istringstream is(lex.getString());
 338                 unsigned int aid;
 339                 lyx::time_type ct;
 340                 is >> aid >> ct;
 341                 if (aid >= bp.author_map.size()) {
 342                         errorList.push_back(ErrorItem(_("Change tracking error"),
 343                                             bformat(_("Unknown author index for insertion: %1$d\n"), aid),
 344                                             par.id(), 0, par.size()));
 345
 346                         change = Change(Change::UNCHANGED);
 347                 } else
 348                         change = Change(Change::INSERTED, bp.author_map[aid], ct);
 349         } else if (token == "\\change_deleted") {
 350                 lex.eatLine();
 351                 std::istringstream is(lex.getString());
 352                 unsigned int aid;
 353                 lyx::time_type ct;
 354                 is >> aid >> ct;
 355                 if (aid >= bp.author_map.size()) {
 356                         errorList.push_back(ErrorItem(_("Change tracking error"),
 357                                             bformat(_("Unknown author index for deletion: %1$d\n"), aid),
 358                                             par.id(), 0, par.size()));
 359
 360                         change = Change(Change::UNCHANGED);
 361                 } else
 362                         change = Change(Change::DELETED, bp.author_map[aid], ct);
 363         } else {
 364                 lex.eatLine();
 365                 errorList.push_back(ErrorItem(_("Unknown token"),
 366                         bformat(_("Unknown token: %1$s %2$s\n"), lyx::from_utf8(token),
 367                         lyx::from_utf8(lex.getString())),
 368                         par.id(), 0, par.size()));
 369         }
 370 }
 371
 372
 373 void readParagraph(Buffer const & buf, Paragraph & par, LyXLex & lex, ErrorList & errorList)
 374 {
 375         lex.nextToken();
 376         string token = lex.getString();
 377         LyXFont font;
 378         Change change;
 379
 380         while (lex.isOK()) {
 381
 382                 readParToken(buf, par, lex, token, font, change, errorList);
 383
 384                 lex.nextToken();
 385                 token = lex.getString();
 386
 387                 if (token.empty())
 388                         continue;
 389
 390                 if (token == "\\end_layout") {
 391                         //Ok, paragraph finished
 392                         break;
 393                 }
 394
 395                 lyxerr[Debug::PARSER] << "Handling paragraph token: `"
 396                                       << token << '\'' << endl;
 397                 if (token == "\\begin_layout" || token == "\\end_document"
 398                     || token == "\\end_inset" || token == "\\begin_deeper"
 399                     || token == "\\end_deeper") {
 400                         lex.pushToken(token);
 401                         lyxerr << "Paragraph ended in line "
 402                                << lex.getLineNo() << "\n"
 403                                << "Missing \\end_layout.\n";
 404                         break;
 405                 }
 406         }
 407         // Final change goes to paragraph break:
 408         par.setChange(par.size(), change);
 409
 410         // Initialize begin_of_body_ on load; redoParagraph maintains
 411         par.setBeginOfBody();
 412 }
 413
 414
 415 } // namespace anon
 416
 417
 418
 419 BufferView * LyXText::bv() const
 420 {
 421         BOOST_ASSERT(bv_owner != 0);
 422         return bv_owner;
 423 }
 424
 425
 426 double LyXText::spacing(Paragraph const & par) const
 427 {
 428         if (par.params().spacing().isDefault())
 429                 return bv()->buffer()->params().spacing().getValue();
 430         return par.params().spacing().getValue();
 431 }
 432
 433
 434 int LyXText::width() const
 435 {
 436         return dim_.wid;
 437 }
 438
 439
 440 int LyXText::height() const
 441 {
 442         return dim_.height();
 443 }
 444
 445
 446 int LyXText::singleWidth(Paragraph const & par, pos_type pos) const
 447 {
 448         return singleWidth(par, pos, par.getChar(pos), getFont(par, pos));
 449 }
 450
 451
 452 int LyXText::singleWidth(Paragraph const & par,
 453                          pos_type pos, char_type c, LyXFont const & font) const
 454 {
 455         // The most common case is handled first (Asger)
 456         if (isPrintable(c)) {
 457                 Language const * language = font.language();
 458                 if (language->rightToLeft()) {
 459                         if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 460                              lyxrc.font_norm_type == LyXRC::ISO_10646_1)
 461                             && language->lang() == "arabic") {
 462                                 if (Encodings::isComposeChar_arabic(c))
 463                                         return 0;
 464                                 c = par.transformChar(c, pos);
 465                         } else if (language->lang() == "hebrew" &&
 466                                    Encodings::isComposeChar_hebrew(c))
 467                                 return 0;
 468                 }
 469                 return theApp->fontLoader().metrics(font).width(c);
 470         }
 471
 472         if (c == Paragraph::META_INSET)
 473                 return par.getInset(pos)->width();
 474
 475         return theApp->fontLoader().metrics(font).width(c);
 476 }
 477
 478
 479 int LyXText::leftMargin(pit_type pit) const
 480 {
 481         BOOST_ASSERT(pit >= 0);
 482         BOOST_ASSERT(pit < int(pars_.size()));
 483         return leftMargin(pit, pars_[pit].size());
 484 }
 485
 486
 487 int LyXText::leftMargin(pit_type const pit, pos_type const pos) const
 488 {
 489         BOOST_ASSERT(pit >= 0);
 490         BOOST_ASSERT(pit < int(pars_.size()));
 491         Paragraph const & par = pars_[pit];
 492         BOOST_ASSERT(pos >= 0);
 493         BOOST_ASSERT(pos <= par.size());
 494         //lyxerr << "LyXText::leftMargin: pit: " << pit << " pos: " << pos << endl;
 495         BufferParams const & params = bv()->buffer()->params();
 496         LyXTextClass const & tclass = params.getLyXTextClass();
 497         LyXLayout_ptr const & layout = par.layout();
 498
 499         string parindent = layout->parindent;
 500
 501         int l_margin = 0;
 502
 503         if (isMainText())
 504                 l_margin += changebarMargin();
 505
 506         string leftm = tclass.leftmargin();
 507         docstring dleft(leftm.begin(), leftm.end());
 508         l_margin += theApp->fontLoader().metrics(params.getFont()).signedWidth(dleft);
 509
 510         if (par.getDepth() != 0) {
 511                 // find the next level paragraph
 512                 pit_type newpar = outerHook(pit, pars_);
 513                 if (newpar != pit_type(pars_.size())) {
 514                         if (pars_[newpar].layout()->isEnvironment()) {
 515                                 l_margin = leftMargin(newpar);
 516                         }
 517                         if (par.layout() == tclass.defaultLayout()) {
 518                                 if (pars_[newpar].params().noindent())
 519                                         parindent.erase();
 520                                 else
 521                                         parindent = pars_[newpar].layout()->parindent;
 522                         }
 523                 }
 524         }
 525
 526         // This happens after sections in standard classes. The 1.3.x
 527         // code compared depths too, but it does not seem necessary
 528         // (JMarc)
 529         if (par.layout() == tclass.defaultLayout()
 530             && pit > 0 && pars_[pit - 1].layout()->nextnoindent)
 531                 parindent.erase();
 532
 533         LyXFont const labelfont = getLabelFont(par);
 534         FontMetrics const & labelfont_metrics = theApp->fontLoader().metrics(labelfont);
 535
 536         switch (layout->margintype) {
 537         case MARGIN_DYNAMIC:
 538                 if (!layout->leftmargin.empty()) {
 539                         string leftm = layout->leftmargin;
 540                         docstring dleft(leftm.begin(), leftm.end());
 541                         l_margin += theApp->fontLoader().metrics(params.getFont()).signedWidth(dleft);
 542                 }
 543                 if (!par.getLabelstring().empty()) {
 544                         string labin = layout->labelindent;
 545                         docstring dlabin(labin.begin(), labin.end());
 546                         l_margin += labelfont_metrics.signedWidth(dlabin);
 547                         string labstr = par.getLabelstring();
 548                         docstring dlabstr(labstr.begin(), labstr.end());
 549                         l_margin += labelfont_metrics.width(dlabstr);
 550                         string labsep = layout->labelsep;
 551                         docstring dlabsep(labsep.begin(), labsep.end());
 552                         l_margin += labelfont_metrics.width(dlabsep);
 553                 }
 554                 break;
 555
 556         case MARGIN_MANUAL: {
 557                 string labin = layout->labelindent;
 558                 docstring dlabin(labin.begin(), labin.end());
 559                 l_margin += labelfont_metrics.signedWidth(dlabin);
 560                 // The width of an empty par, even with manual label, should be 0
 561                 if (!par.empty() && pos >= par.beginOfBody()) {
 562                         if (!par.getLabelWidthString().empty()) {
 563                                 string labstr = par.getLabelWidthString();
 564                                 docstring dlabstr(labstr.begin(), labstr.end());
 565                                 l_margin += labelfont_metrics.width(dlabstr);
 566                                 string labsep = layout->labelsep;
 567                                 docstring dlabsep(labsep.begin(), labsep.end());
 568                                 l_margin += labelfont_metrics.width(dlabsep);
 569                         }
 570                 }
 571                 break;
 572         }
 573
 574         case MARGIN_STATIC: {
 575                 string leftm = layout->leftmargin;
 576                 docstring dleft(leftm.begin(), leftm.end());
 577                 l_margin +=
 578                         theApp->fontLoader().metrics(params.getFont()).signedWidth(dleft)
 579                         * 4     / (par.getDepth() + 4);
 580                 break;
 581         }
 582
 583         case MARGIN_FIRST_DYNAMIC:
 584                 if (layout->labeltype == LABEL_MANUAL) {
 585                         if (pos >= par.beginOfBody()) {
 586                                 string leftm = layout->leftmargin;
 587                                 docstring dleft(leftm.begin(), leftm.end());
 588                                 l_margin += labelfont_metrics.signedWidth(dleft);
 589                         } else {
 590                                 string labin = layout->labelindent;
 591                                 docstring dlabin(labin.begin(), labin.end());
 592                                 l_margin += labelfont_metrics.signedWidth(dlabin);
 593                         }
 594                 } else if (pos != 0
 595                            // Special case to fix problems with
 596                            // theorems (JMarc)
 597                            || (layout->labeltype == LABEL_STATIC
 598                                && layout->latextype == LATEX_ENVIRONMENT
 599                                && !isFirstInSequence(pit, pars_))) {
 600                         string leftm = layout->leftmargin;
 601                         docstring dleft(leftm.begin(), leftm.end());
 602                         l_margin += labelfont_metrics.signedWidth(dleft);
 603                 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
 604                            && layout->labeltype != LABEL_BIBLIO
 605                            && layout->labeltype !=
 606                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 607                         string labin = layout->labelindent;
 608                         docstring dlabin(labin.begin(), labin.end());
 609                         l_margin += labelfont_metrics.signedWidth(dlabin);
 610                         string labsep = layout->labelsep;
 611                         docstring dlabsep(labsep.begin(), labsep.end());
 612                         l_margin += labelfont_metrics.width(dlabsep);
 613                         string labstr = par.getLabelstring();
 614                         docstring dlabstr(labstr.begin(), labstr.end());
 615                         l_margin += labelfont_metrics.width(dlabstr);
 616                 }
 617                 break;
 618
 619         case MARGIN_RIGHT_ADDRESS_BOX: {
 620 #if 0
 621                 // ok, a terrible hack. The left margin depends on the widest
 622                 // row in this paragraph.
 623                 RowList::iterator rit = par.rows().begin();
 624                 RowList::iterator end = par.rows().end();
 625 #ifdef WITH_WARNINGS
 626 #warning This is wrong.
 627 #endif
 628                 int minfill = maxwidth_;
 629                 for ( ; rit != end; ++rit)
 630                         if (rit->fill() < minfill)
 631                                 minfill = rit->fill();
 632                 l_margin += theApp->fontLoader().metrics(params.getFont()).signedWidth(layout->leftmargin);
 633                 l_margin += minfill;
 634 #endif
 635                 // also wrong, but much shorter.
 636                 l_margin += maxwidth_ / 2;
 637                 break;
 638         }
 639         }
 640
 641         if (!par.params().leftIndent().zero())
 642                 l_margin += par.params().leftIndent().inPixels(maxwidth_);
 643
 644         LyXAlignment align;
 645
 646         if (par.params().align() == LYX_ALIGN_LAYOUT)
 647                 align = layout->align;
 648         else
 649                 align = par.params().align();
 650
 651         // set the correct parindent
 652         if (pos == 0
 653             && (layout->labeltype == LABEL_NO_LABEL
 654                || layout->labeltype == LABEL_TOP_ENVIRONMENT
 655                || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 656                || (layout->labeltype == LABEL_STATIC
 657                    && layout->latextype == LATEX_ENVIRONMENT
 658                    && !isFirstInSequence(pit, pars_)))
 659             && align == LYX_ALIGN_BLOCK
 660             && !par.params().noindent()
 661             // in some insets, paragraphs are never indented
 662             && !(par.inInset() && par.inInset()->neverIndent())
 663             // display style insets are always centered, omit indentation
 664             && !(!par.empty()
 665                     && par.isInset(pos)
 666                     && par.getInset(pos)->display())
 667             && (par.layout() != tclass.defaultLayout()
 668                 || bv()->buffer()->params().paragraph_separation ==
 669                    BufferParams::PARSEP_INDENT))
 670         {
 671                 docstring din(parindent.begin(), parindent.end());
 672                 l_margin += theApp->fontLoader().metrics(params.getFont()).signedWidth(din);
 673         }
 674
 675         return l_margin;
 676 }
 677
 678
 679 int LyXText::rightMargin(Paragraph const & par) const
 680 {
 681         // FIXME: the correct way is to only call rightMargin() only
 682         // within the main LyXText. The following test is thus bogus.
 683         LyXText const & text = bv()->buffer()->text();
 684         // We do not want rightmargins on inner texts.
 685         if (&text != this)
 686                 return 0;
 687
 688         BufferParams const & params = bv()->buffer()->params();
 689         LyXTextClass const & tclass = params.getLyXTextClass();
 690         string trmarg = tclass.rightmargin();
 691         docstring dtrmarg(trmarg.begin(), trmarg.end());
 692         string lrmarg = par.layout()->rightmargin;
 693         docstring dlrmarg(lrmarg.begin(), lrmarg.end());
 694         FontMetrics const & fm = theApp->fontLoader().metrics(params.getFont());
 695         int const r_margin =
 696                 ::rightMargin()
 697                 + fm.signedWidth(dtrmarg)
 698                 + fm.signedWidth(dlrmarg)
 699                 * 4 / (par.getDepth() + 4);
 700
 701         return r_margin;
 702 }
 703
 704
 705 int LyXText::labelEnd(pit_type const pit) const
 706 {
 707         // labelEnd is only needed if the layout fills a flushleft label.
 708         if (pars_[pit].layout()->margintype != MARGIN_MANUAL)
 709                 return 0;
 710         // return the beginning of the body
 711         return leftMargin(pit);
 712 }
 713
 714
 715 namespace {
 716
 717 // this needs special handling - only newlines count as a break point
 718 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
 719 {
 720         pos_type const end = par.size();
 721
 722         for (; i < end; ++i)
 723                 if (par.isNewline(i))
 724                         return i + 1;
 725
 726         return end;
 727 }
 728
 729 };
 730
 731
 732 void LyXText::rowBreakPoint(pit_type const pit, Row & row) const
 733 {
 734         Paragraph const & par = pars_[pit];
 735         pos_type const end = par.size();
 736         pos_type const pos = row.pos();
 737         if (pos == end) {
 738                 row.endpos(end);
 739                 return;
 740         }
 741
 742         // maximum pixel width of a row
 743         int width = maxwidth_ - rightMargin(par); // - leftMargin(pit, row);
 744         if (width < 0) {
 745                 row.endpos(end);
 746                 return;
 747         }
 748
 749         LyXLayout_ptr const & layout = par.layout();
 750
 751         if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 752                 row.endpos(addressBreakPoint(pos, par));
 753                 return;
 754         }
 755
 756         pos_type const body_pos = par.beginOfBody();
 757
 758
 759         // Now we iterate through until we reach the right margin
 760         // or the end of the par, then choose the possible break
 761         // nearest that.
 762
 763         int const left = leftMargin(pit, pos);
 764         int x = left;
 765
 766         // pixel width since last breakpoint
 767         int chunkwidth = 0;
 768
 769         FontIterator fi = FontIterator(*this, par, pos);
 770         pos_type point = end;
 771         pos_type i = pos;
 772         FontMetrics const & fm = theApp->fontLoader().metrics(getLabelFont(par));
 773         for ( ; i < end; ++i, ++fi) {
 774                 char_type const c = par.getChar(i);
 775                 int thiswidth = singleWidth(par, i, c, *fi);
 776
 777                 // add the auto-hfill from label end to the body
 778                 if (body_pos && i == body_pos) {
 779                         string lsep = layout->labelsep;
 780                         docstring dlsep(lsep.begin(), lsep.end());
 781                         int add = fm.width(dlsep);
 782                         if (par.isLineSeparator(i - 1))
 783                                 add -= singleWidth(par, i - 1);
 784
 785                         add = std::max(add, labelEnd(pit) - x);
 786                         thiswidth += add;
 787                 }
 788
 789                 x += thiswidth;
 790                 chunkwidth += thiswidth;
 791
 792                 // break before a character that will fall off
 793                 // the right of the row
 794                 if (x >= width) {
 795                         // if no break before, break here
 796                         if (point == end || chunkwidth >= width - left) {
 797                                 if (i > pos)
 798                                         point = i;
 799                                 else
 800                                         point = i + 1;
 801
 802                         }
 803                         // exit on last registered breakpoint:
 804                         break;
 805                 }
 806
 807                 if (par.isNewline(i)) {
 808                         point = i + 1;
 809                         break;
 810                 }
 811                 // Break before...
 812                 if (i + 1 < end) {
 813                         if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
 814                                 point = i + 1;
 815                                 break;
 816                         }
 817                         // ...and after.
 818                         if (par.isInset(i) && par.getInset(i)->display()) {
 819                                 point = i + 1;
 820                                 break;
 821                         }
 822                 }
 823
 824                 if (!par.isInset(i) || par.getInset(i)->isChar()) {
 825                         // some insets are line separators too
 826                         if (par.isLineSeparator(i)) {
 827                                 // register breakpoint:
 828                                 point = i + 1;
 829                                 chunkwidth = 0;
 830                         }
 831                 }
 832         }
 833
 834         // maybe found one, but the par is short enough.
 835         if (i == end && x < width)
 836                 point = end;
 837
 838         // manual labels cannot be broken in LaTeX. But we
 839         // want to make our on-screen rendering of footnotes
 840         // etc. still break
 841         if (body_pos && point < body_pos)
 842                 point = body_pos;
 843
 844         row.endpos(point);
 845 }
 846
 847
 848 void LyXText::setRowWidth(pit_type const pit, Row & row) const
 849 {
 850         // get the pure distance
 851         pos_type const end = row.endpos();
 852
 853         Paragraph const & par = pars_[pit];
 854         string const & labelsep = par.layout()->labelsep;
 855         docstring dlsep(labelsep.begin(), labelsep.end());
 856         int w = leftMargin(pit, row.pos());
 857
 858         pos_type const body_pos = par.beginOfBody();
 859         pos_type i = row.pos();
 860
 861         FontMetrics const & fm = theApp->fontLoader().metrics(getLabelFont(par));
 862
 863         if (i < end) {
 864                 FontIterator fi = FontIterator(*this, par, i);
 865                 for ( ; i < end; ++i, ++fi) {
 866                         if (body_pos > 0 && i == body_pos) {
 867                                 w += fm.width(dlsep);
 868                                 if (par.isLineSeparator(i - 1))
 869                                         w -= singleWidth(par, i - 1);
 870                                 w = max(w, labelEnd(pit));
 871                         }
 872                         char_type const c = par.getChar(i);
 873                         w += singleWidth(par, i, c, *fi);
 874                 }
 875         }
 876
 877         if (body_pos > 0 && body_pos >= end) {
 878                 w += fm.width(dlsep);
 879                 if (end > 0 && par.isLineSeparator(end - 1))
 880                         w -= singleWidth(par, end - 1);
 881                 w = max(w, labelEnd(pit));
 882         }
 883
 884         row.width(w + rightMargin(par));
 885 }
 886
 887
 888 // returns the minimum space a manual label needs on the screen in pixel
 889 int LyXText::labelFill(Paragraph const & par, Row const & row) const
 890 {
 891         pos_type last = par.beginOfBody();
 892
 893         BOOST_ASSERT(last > 0);
 894
 895         // -1 because a label ends with a space that is in the label
 896         --last;
 897
 898         // a separator at this end does not count
 899         if (par.isLineSeparator(last))
 900                 --last;
 901
 902         int w = 0;
 903         for (pos_type i = row.pos(); i <= last; ++i)
 904                 w += singleWidth(par, i);
 905
 906         string const & label = par.params().labelWidthString();
 907         if (label.empty())
 908                 return 0;
 909
 910         docstring dlab(label.begin(), label.end());
 911
 912         FontMetrics const & fm = theApp->fontLoader().metrics(getLabelFont(par));
 913
 914         return max(0, fm.width(dlab) - w);
 915 }
 916
 917
 918 LColor_color LyXText::backgroundColor() const
 919 {
 920         return LColor_color(LColor::color(background_color_));
 921 }
 922
 923
 924 void LyXText::setHeightOfRow(pit_type const pit, Row & row)
 925 {
 926         Paragraph const & par = pars_[pit];
 927         // get the maximum ascent and the maximum descent
 928         double layoutasc = 0;
 929         double layoutdesc = 0;
 930         double const dh = defaultRowHeight();
 931
 932         // ok, let us initialize the maxasc and maxdesc value.
 933         // Only the fontsize count. The other properties
 934         // are taken from the layoutfont. Nicer on the screen :)
 935         LyXLayout_ptr const & layout = par.layout();
 936
 937         // as max get the first character of this row then it can
 938         // increase but not decrease the height. Just some point to
 939         // start with so we don't have to do the assignment below too
 940         // often.
 941         LyXFont font = getFont(par, row.pos());
 942         LyXFont::FONT_SIZE const tmpsize = font.size();
 943         font = getLayoutFont(pit);
 944         LyXFont::FONT_SIZE const size = font.size();
 945         font.setSize(tmpsize);
 946
 947         LyXFont labelfont = getLabelFont(par);
 948
 949         FontMetrics const & labelfont_metrics = theApp->fontLoader().metrics(labelfont);
 950         FontMetrics const & fontmetrics = theApp->fontLoader().metrics(font);
 951
 952         // these are minimum values
 953         double const spacing_val = layout->spacing.getValue() * spacing(par);
 954         //lyxerr << "spacing_val = " << spacing_val << endl;
 955         int maxasc  = int(fontmetrics.maxAscent()  * spacing_val);
 956         int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
 957
 958         // insets may be taller
 959         InsetList::const_iterator ii = par.insetlist.begin();
 960         InsetList::const_iterator iend = par.insetlist.end();
 961         for ( ; ii != iend; ++ii) {
 962                 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
 963                         maxasc  = max(maxasc,  ii->inset->ascent());
 964                         maxdesc = max(maxdesc, ii->inset->descent());
 965                 }
 966         }
 967
 968         // Check if any custom fonts are larger (Asger)
 969         // This is not completely correct, but we can live with the small,
 970         // cosmetic error for now.
 971         int labeladdon = 0;
 972         pos_type const pos_end = row.endpos();
 973
 974         LyXFont::FONT_SIZE maxsize =
 975                 par.highestFontInRange(row.pos(), pos_end, size);
 976         if (maxsize > font.size()) {
 977                 font.setSize(maxsize);
 978                 maxasc  = max(maxasc,  fontmetrics.maxAscent());
 979                 maxdesc = max(maxdesc, fontmetrics.maxDescent());
 980         }
 981
 982         // This is nicer with box insets:
 983         ++maxasc;
 984         ++maxdesc;
 985
 986         row.ascent(maxasc);
 987
 988         // is it a top line?
 989         if (row.pos() == 0) {
 990                 BufferParams const & bufparams = bv()->buffer()->params();
 991                 // some parksips VERY EASY IMPLEMENTATION
 992                 if (bv()->buffer()->params().paragraph_separation
 993                     == BufferParams::PARSEP_SKIP
 994                         && pit != 0
 995                         && ((layout->isParagraph() && par.getDepth() == 0)
 996                             || (pars_[pit - 1].layout()->isParagraph()
 997                                 && pars_[pit - 1].getDepth() == 0)))
 998                 {
 999                                 maxasc += bufparams.getDefSkip().inPixels(*bv());
1000                 }
1001
1002                 if (par.params().startOfAppendix())
1003                         maxasc += int(3 * dh);
1004
1005                 // This is special code for the chapter, since the label of this
1006                 // layout is printed in an extra row
1007                 if (layout->counter == "chapter"
1008                     && !par.params().labelString().empty()) {
1009                         labeladdon = int(labelfont_metrics.maxHeight()
1010                                      * layout->spacing.getValue()
1011                                      * spacing(par));
1012                 }
1013
1014                 // special code for the top label
1015                 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
1016                      || layout->labeltype == LABEL_BIBLIO
1017                      || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1018                     && isFirstInSequence(pit, paragraphs())
1019                     && !par.getLabelstring().empty())
1020                 {
1021                         labeladdon = int(
1022                                   labelfont_metrics.maxHeight()
1023                                         * layout->spacing.getValue()
1024                                         * spacing(par)
1025                                 + (layout->topsep + layout->labelbottomsep) * dh);
1026                 }
1027
1028                 // Add the layout spaces, for example before and after
1029                 // a section, or between the items of a itemize or enumerate
1030                 // environment.
1031
1032                 pit_type prev = depthHook(pit, pars_, par.getDepth());
1033                 if (prev != pit
1034                     && pars_[prev].layout() == layout
1035                     && pars_[prev].getDepth() == par.getDepth()
1036                     && pars_[prev].getLabelWidthString() == par.getLabelWidthString())
1037                 {
1038                         layoutasc = layout->itemsep * dh;
1039                 } else if (pit != 0 || row.pos() != 0) {
1040                         if (layout->topsep > 0)
1041                                 layoutasc = layout->topsep * dh;
1042                 }
1043
1044                 prev = outerHook(pit, pars_);
1045                 if (prev != pit_type(pars_.size())) {
1046                         maxasc += int(pars_[prev].layout()->parsep * dh);
1047                 } else if (pit != 0) {
1048                         if (pars_[pit - 1].getDepth() != 0 ||
1049                                         pars_[pit - 1].layout() == layout) {
1050                                 maxasc += int(layout->parsep * dh);
1051                         }
1052                 }
1053         }
1054
1055         // is it a bottom line?
1056         if (row.endpos() >= par.size()) {
1057                 // add the layout spaces, for example before and after
1058                 // a section, or between the items of a itemize or enumerate
1059                 // environment
1060                 pit_type nextpit = pit + 1;
1061                 if (nextpit != pit_type(pars_.size())) {
1062                         pit_type cpit = pit;
1063                         double usual = 0;
1064                         double unusual = 0;
1065
1066                         if (pars_[cpit].getDepth() > pars_[nextpit].getDepth()) {
1067                                 usual = pars_[cpit].layout()->bottomsep * dh;
1068                                 cpit = depthHook(cpit, paragraphs(), pars_[nextpit].getDepth());
1069                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1070                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1071                                 {
1072                                         unusual = pars_[cpit].layout()->bottomsep * dh;
1073                                 }
1074                                 layoutdesc = max(unusual, usual);
1075                         } else if (pars_[cpit].getDepth() == pars_[nextpit].getDepth()) {
1076                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1077                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1078                                         layoutdesc = int(pars_[cpit].layout()->bottomsep * dh);
1079                         }
1080                 }
1081         }
1082
1083         // incalculate the layout spaces
1084         maxasc  += int(layoutasc  * 2 / (2 + pars_[pit].getDepth()));
1085         maxdesc += int(layoutdesc * 2 / (2 + pars_[pit].getDepth()));
1086
1087         // FIXME: the correct way is to do the following is to move the
1088         // following code in another method specially tailored for the
1089         // main LyXText. The following test is thus bogus.
1090         LyXText const & text = bv_owner->buffer()->text();
1091         // Top and bottom margin of the document (only at top-level)
1092         if (&text == this) {
1093                 if (pit == 0 && row.pos() == 0)
1094                         maxasc += 20;
1095                 if (pit + 1 == pit_type(pars_.size()) &&
1096                     row.endpos() == par.size())
1097                         maxdesc += 20;
1098         }
1099
1100         row.ascent(maxasc + labeladdon);
1101         row.descent(maxdesc);
1102 }
1103
1104
1105 namespace {
1106
1107 }
1108
1109 void LyXText::breakParagraph(LCursor & cur, bool keep_layout)
1110 {
1111         BOOST_ASSERT(this == cur.text());
1112
1113         Paragraph & cpar = cur.paragraph();
1114         pit_type cpit = cur.pit();
1115
1116         LyXTextClass const & tclass = cur.buffer().params().getLyXTextClass();
1117         LyXLayout_ptr const & layout = cpar.layout();
1118
1119         // this is only allowed, if the current paragraph is not empty
1120         // or caption and if it has not the keepempty flag active
1121         if (cur.lastpos() == 0 && !cpar.allowEmpty()
1122            && layout->labeltype != LABEL_SENSITIVE)
1123                 return;
1124
1125         // a layout change may affect also the following paragraph
1126         recUndo(cur.pit(), undoSpan(cur.pit()) - 1);
1127
1128         // Always break behind a space
1129         // It is better to erase the space (Dekel)
1130         if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
1131                 cpar.erase(cur.pos());
1132
1133         // How should the layout for the new paragraph be?
1134         int preserve_layout = 0;
1135         if (keep_layout)
1136                 preserve_layout = 2;
1137         else
1138                 preserve_layout = layout->isEnvironment();
1139
1140         // We need to remember this before we break the paragraph, because
1141         // that invalidates the layout variable
1142         bool sensitive = layout->labeltype == LABEL_SENSITIVE;
1143
1144         // we need to set this before we insert the paragraph.
1145         bool const isempty = cpar.allowEmpty() && cpar.empty();
1146
1147         ::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
1148                          cur.pos(), preserve_layout);
1149
1150         // After this, neither paragraph contains any rows!
1151
1152         cpit = cur.pit();
1153         pit_type next_par = cpit + 1;
1154
1155         // well this is the caption hack since one caption is really enough
1156         if (sensitive) {
1157                 if (cur.pos() == 0)
1158                         // set to standard-layout
1159                         pars_[cpit].applyLayout(tclass.defaultLayout());
1160                 else
1161                         // set to standard-layout
1162                         pars_[next_par].applyLayout(tclass.defaultLayout());
1163         }
1164
1165         while (!pars_[next_par].empty() && pars_[next_par].isNewline(0))
1166                 pars_[next_par].erase(0);
1167
1168         ParIterator current_it(cur);
1169         ParIterator last_it(cur);
1170         ++last_it;
1171         ++last_it;
1172
1173         updateLabels(cur.buffer(), current_it, last_it);
1174
1175         // Mark "carriage return" as inserted if change tracking:
1176         if (cur.buffer().params().trackChanges) {
1177                 // FIXME: Change tracking (MG)
1178                 cur.paragraph().setChange(cur.paragraph().size(),
1179                         Change::INSERTED);
1180         }
1181
1182         // This check is necessary. Otherwise the new empty paragraph will
1183         // be deleted automatically. And it is more friendly for the user!
1184         if (cur.pos() != 0 || isempty)
1185                 setCursor(cur, cur.pit() + 1, 0);
1186         else
1187                 setCursor(cur, cur.pit(), 0);
1188 }
1189
1190
1191 // insert a character, moves all the following breaks in the
1192 // same Paragraph one to the right and make a rebreak
1193 void LyXText::insertChar(LCursor & cur, char_type c)
1194 {
1195         BOOST_ASSERT(this == cur.text());
1196         BOOST_ASSERT(c != Paragraph::META_INSET);
1197
1198         recordUndo(cur, Undo::INSERT);
1199
1200         Paragraph & par = cur.paragraph();
1201         // try to remove this
1202         pit_type const pit = cur.pit();
1203
1204         bool const freeSpacing = par.layout()->free_spacing ||
1205                 par.isFreeSpacing();
1206
1207         if (lyxrc.auto_number) {
1208                 static docstring const number_operators = lyx::from_ascii("+-/*");
1209                 static docstring const number_unary_operators = lyx::from_ascii("+-");
1210                 static docstring const number_seperators = lyx::from_ascii(".,:");
1211
1212                 if (current_font.number() == LyXFont::ON) {
1213                         if (!isDigit(c) && !contains(number_operators, c) &&
1214                             !(contains(number_seperators, c) &&
1215                               cur.pos() != 0 &&
1216                               cur.pos() != cur.lastpos() &&
1217                               getFont(par, cur.pos()).number() == LyXFont::ON &&
1218                               getFont(par, cur.pos() - 1).number() == LyXFont::ON)
1219                            )
1220                                 number(cur); // Set current_font.number to OFF
1221                 } else if (isDigit(c) &&
1222                            real_current_font.isVisibleRightToLeft()) {
1223                         number(cur); // Set current_font.number to ON
1224
1225                         if (cur.pos() != 0) {
1226                                 char_type const c = par.getChar(cur.pos() - 1);
1227                                 if (contains(number_unary_operators, c) &&
1228                                     (cur.pos() == 1
1229                                      || par.isSeparator(cur.pos() - 2)
1230                                      || par.isNewline(cur.pos() - 2))
1231                                   ) {
1232                                         setCharFont(pit, cur.pos() - 1, current_font);
1233                                 } else if (contains(number_seperators, c)
1234                                      && cur.pos() >= 2
1235                                      && getFont(par, cur.pos() - 2).number() == LyXFont::ON) {
1236                                         setCharFont(pit, cur.pos() - 1, current_font);
1237                                 }
1238                         }
1239                 }
1240         }
1241
1242         // First check, if there will be two blanks together or a blank at
1243         // the beginning of a paragraph.
1244         // I decided to handle blanks like normal characters, the main
1245         // difference are the special checks when calculating the row.fill
1246         // (blank does not count at the end of a row) and the check here
1247
1248         // When the free-spacing option is set for the current layout,
1249         // disable the double-space checking
1250         if (!freeSpacing && isLineSeparatorChar(c)) {
1251                 if (cur.pos() == 0) {
1252                         static bool sent_space_message = false;
1253                         if (!sent_space_message) {
1254                                 cur.message(_("You cannot insert a space at the "
1255                                                            "beginning of a paragraph. Please read the Tutorial."));
1256                                 sent_space_message = true;
1257                         }
1258                         return;
1259                 }
1260                 BOOST_ASSERT(cur.pos() > 0);
1261                 if ((par.isLineSeparator(cur.pos() - 1)
1262                     || par.isNewline(cur.pos() - 1))
1263                     && par.lookupChange(cur.pos() - 1) != Change::DELETED) {
1264                         static bool sent_space_message = false;
1265                         if (!sent_space_message) {
1266                                 cur.message(_("You cannot type two spaces this way. "
1267                                                            "Please read the Tutorial."));
1268                                 sent_space_message = true;
1269                         }
1270                         return;
1271                 }
1272         }
1273
1274         par.insertChar(cur.pos(), c, current_font);
1275         setCursor(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
1276         charInserted();
1277 }
1278
1279
1280 void LyXText::charInserted()
1281 {
1282         // Here we call finishUndo for every 20 characters inserted.
1283         // This is from my experience how emacs does it. (Lgb)
1284         static unsigned int counter;
1285         if (counter < 20) {
1286                 ++counter;
1287         } else {
1288                 finishUndo();
1289                 counter = 0;
1290         }
1291 }
1292
1293
1294 RowMetrics
1295 LyXText::computeRowMetrics(pit_type const pit, Row const & row) const
1296 {
1297         RowMetrics result;
1298         Paragraph const & par = pars_[pit];
1299
1300         double w = dim_.wid - row.width();
1301
1302         bool const is_rtl = isRTL(par);
1303         if (is_rtl)
1304                 result.x = rightMargin(par);
1305         else
1306                 result.x = leftMargin(pit, row.pos());
1307
1308         // is there a manual margin with a manual label
1309         LyXLayout_ptr const & layout = par.layout();
1310
1311         if (layout->margintype == MARGIN_MANUAL
1312             && layout->labeltype == LABEL_MANUAL) {
1313                 /// We might have real hfills in the label part
1314                 int nlh = numberOfLabelHfills(par, row);
1315
1316                 // A manual label par (e.g. List) has an auto-hfill
1317                 // between the label text and the body of the
1318                 // paragraph too.
1319                 // But we don't want to do this auto hfill if the par
1320                 // is empty.
1321                 if (!par.empty())
1322                         ++nlh;
1323
1324                 if (nlh && !par.getLabelWidthString().empty())
1325                         result.label_hfill = labelFill(par, row) / double(nlh);
1326         }
1327
1328         // are there any hfills in the row?
1329         int const nh = numberOfHfills(par, row);
1330
1331         if (nh) {
1332                 if (w > 0)
1333                         result.hfill = w / nh;
1334         // we don't have to look at the alignment if it is ALIGN_LEFT and
1335         // if the row is already larger then the permitted width as then
1336         // we force the LEFT_ALIGN'edness!
1337         } else if (int(row.width()) < maxwidth_) {
1338                 // is it block, flushleft or flushright?
1339                 // set x how you need it
1340                 int align;
1341                 if (par.params().align() == LYX_ALIGN_LAYOUT)
1342                         align = layout->align;
1343                 else
1344                         align = par.params().align();
1345
1346                 // Display-style insets should always be on a centred row
1347                 // The test on par.size() is to catch zero-size pars, which
1348                 // would trigger the assert in Paragraph::getInset().
1349                 //inset = par.size() ? par.getInset(row.pos()) : 0;
1350                 if (!par.empty()
1351                     && par.isInset(row.pos())
1352                     && par.getInset(row.pos())->display())
1353                 {
1354                         align = LYX_ALIGN_CENTER;
1355                 }
1356
1357                 switch (align) {
1358                 case LYX_ALIGN_BLOCK: {
1359                         int const ns = numberOfSeparators(par, row);
1360                         bool disp_inset = false;
1361                         if (row.endpos() < par.size()) {
1362                                 InsetBase const * in = par.getInset(row.endpos());
1363                                 if (in)
1364                                         disp_inset = in->display();
1365                         }
1366                         // If we have separators, this is not the last row of a
1367                         // par, does not end in newline, and is not row above a
1368                         // display inset... then stretch it
1369                         if (ns
1370                             && row.endpos() < par.size()
1371                             && !par.isNewline(row.endpos() - 1)
1372                             && !disp_inset
1373                                 ) {
1374                                 result.separator = w / ns;
1375                         } else if (is_rtl) {
1376                                 result.x += w;
1377                         }
1378                         break;
1379                 }
1380                 case LYX_ALIGN_RIGHT:
1381                         result.x += w;
1382                         break;
1383                 case LYX_ALIGN_CENTER:
1384                         result.x += w / 2;
1385                         break;
1386                 }
1387         }
1388
1389         bidi.computeTables(par, *bv()->buffer(), row);
1390         if (is_rtl) {
1391                 pos_type body_pos = par.beginOfBody();
1392                 pos_type end = row.endpos();
1393
1394                 if (body_pos > 0
1395                     && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1396                 {
1397                         string lsep = layout->labelsep;
1398                         docstring dlsep(lsep.begin(), lsep.end());
1399                         result.x += theApp->fontLoader().metrics(getLabelFont(par)).width(dlsep);
1400                         if (body_pos <= end)
1401                                 result.x += result.label_hfill;
1402                 }
1403         }
1404
1405         return result;
1406 }
1407
1408
1409 // the cursor set functions have a special mechanism. When they
1410 // realize, that you left an empty paragraph, they will delete it.
1411
1412 bool LyXText::cursorRightOneWord(LCursor & cur)
1413 {
1414         BOOST_ASSERT(this == cur.text());
1415
1416         LCursor old = cur;
1417
1418         if (old.pos() == old.lastpos() && old.pit() != old.lastpit()) {
1419                 ++old.pit();
1420                 old.pos() = 0;
1421         } else {
1422                 // Advance through word.
1423                 while (old.pos() != old.lastpos() && old.paragraph().isLetter(old.pos()))
1424                         ++old.pos();
1425                 // Skip through trailing nonword stuff.
1426                 while (old.pos() != old.lastpos() && !old.paragraph().isLetter(old.pos()))
1427                         ++old.pos();
1428         }
1429         return setCursor(cur, old.pit(), old.pos());
1430 }
1431
1432
1433 bool LyXText::cursorLeftOneWord(LCursor & cur)
1434 {
1435         BOOST_ASSERT(this == cur.text());
1436
1437         LCursor old = cur;
1438
1439         if (old.pos() == 0 && old.pit() != 0) {
1440                 --old.pit();
1441                 old.pos() = old.lastpos();
1442         } else {
1443                 // Skip through initial nonword stuff.
1444                 while (old.pos() != 0 && !old.paragraph().isLetter(old.pos() - 1))
1445                         --old.pos();
1446                 // Advance through word.
1447                 while (old.pos() != 0 && old.paragraph().isLetter(old.pos() - 1))
1448                         --old.pos();
1449         }
1450         return setCursor(cur, old.pit(), old.pos());
1451 }
1452
1453
1454 void LyXText::selectWord(LCursor & cur, word_location loc)
1455 {
1456         BOOST_ASSERT(this == cur.text());
1457         CursorSlice from = cur.top();
1458         CursorSlice to = cur.top();
1459         getWord(from, to, loc);
1460         if (cur.top() != from)
1461                 setCursor(cur, from.pit(), from.pos());
1462         if (to == from)
1463                 return;
1464         cur.resetAnchor();
1465         setCursor(cur, to.pit(), to.pos());
1466         cur.setSelection();
1467 }
1468
1469
1470 // Select the word currently under the cursor when no
1471 // selection is currently set
1472 bool LyXText::selectWordWhenUnderCursor(LCursor & cur, word_location loc)
1473 {
1474         BOOST_ASSERT(this == cur.text());
1475         if (cur.selection())
1476                 return false;
1477         selectWord(cur, loc);
1478         return cur.selection();
1479 }
1480
1481
1482 void LyXText::acceptChange(LCursor & cur)
1483 {
1484         BOOST_ASSERT(this == cur.text());
1485         if (!cur.selection() && cur.lastpos() != 0)
1486                 return;
1487
1488         recordUndoSelection(cur, Undo::INSERT);
1489
1490         DocIterator it = cur.selectionBegin();
1491         DocIterator et = cur.selectionEnd();
1492         pit_type pit = it.pit();
1493         Change::Type const type = pars_[pit].lookupChange(it.pos()).type;
1494         for (; pit <= et.pit(); ++pit) {
1495                 pos_type left  = ( pit == it.pit() ? it.pos() : 0 );
1496                 pos_type right =
1497                     ( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
1498                 pars_[pit].acceptChange(left, right);
1499         }
1500         if (type == Change::DELETED) {
1501                 ParagraphList & plist = paragraphs();
1502                 if (it.pit() + 1 < et.pit())
1503                         pars_.erase(boost::next(plist.begin(), it.pit() + 1),
1504                                     boost::next(plist.begin(), et.pit()));
1505
1506                 // Paragraph merge if appropriate:
1507                 if (pars_[it.pit()].lookupChange(pars_[it.pit()].size())
1508                         == Change::DELETED) {
1509                         setCursorIntern(cur, it.pit() + 1, 0);
1510                         backspacePos0(cur);
1511                 }
1512         }
1513         finishUndo();
1514         cur.clearSelection();
1515         setCursorIntern(cur, it.pit(), 0);
1516 }
1517
1518
1519 void LyXText::rejectChange(LCursor & cur)
1520 {
1521         BOOST_ASSERT(this == cur.text());
1522         if (!cur.selection() && cur.lastpos() != 0)
1523                 return;
1524
1525         recordUndoSelection(cur, Undo::INSERT);
1526
1527         DocIterator it = cur.selectionBegin();
1528         DocIterator et = cur.selectionEnd();
1529         pit_type pit = it.pit();
1530         Change::Type const type = pars_[pit].lookupChange(it.pos()).type;
1531         for (; pit <= et.pit(); ++pit) {
1532                 pos_type left  = ( pit == it.pit() ? it.pos() : 0 );
1533                 pos_type right =
1534                     ( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
1535                 pars_[pit].rejectChange(left, right);
1536         }
1537         if (type == Change::INSERTED) {
1538                 ParagraphList & plist = paragraphs();
1539                 if (it.pit() + 1 < et.pit())
1540                         pars_.erase(boost::next(plist.begin(), it.pit() + 1),
1541                                     boost::next(plist.begin(), et.pit()));
1542                 // Paragraph merge if appropriate:
1543                 if (pars_[it.pit()].lookupChange(pars_[it.pit()].size())
1544                         == Change::INSERTED) {
1545                         setCursorIntern(cur, it.pit() + 1, 0);
1546                         backspacePos0(cur);
1547                 }
1548         }
1549         finishUndo();
1550         cur.clearSelection();
1551         setCursorIntern(cur, it.pit(), 0);
1552 }
1553
1554
1555 // Delete from cursor up to the end of the current or next word.
1556 void LyXText::deleteWordForward(LCursor & cur)
1557 {
1558         BOOST_ASSERT(this == cur.text());
1559         if (cur.lastpos() == 0)
1560                 cursorRight(cur);
1561         else {
1562                 cur.resetAnchor();
1563                 cur.selection() = true;
1564                 cursorRightOneWord(cur);
1565                 cur.setSelection();
1566                 cutSelection(cur, true, false);
1567         }
1568 }
1569
1570
1571 // Delete from cursor to start of current or prior word.
1572 void LyXText::deleteWordBackward(LCursor & cur)
1573 {
1574         BOOST_ASSERT(this == cur.text());
1575         if (cur.lastpos() == 0)
1576                 cursorLeft(cur);
1577         else {
1578                 cur.resetAnchor();
1579                 cur.selection() = true;
1580                 cursorLeftOneWord(cur);
1581                 cur.setSelection();
1582                 cutSelection(cur, true, false);
1583         }
1584 }
1585
1586
1587 // Kill to end of line.
1588 void LyXText::deleteLineForward(LCursor & cur)
1589 {
1590         BOOST_ASSERT(this == cur.text());
1591         if (cur.lastpos() == 0) {
1592                 // Paragraph is empty, so we just go to the right
1593                 cursorRight(cur);
1594         } else {
1595                 cur.resetAnchor();
1596                 cur.selection() = true; // to avoid deletion
1597                 cursorEnd(cur);
1598                 cur.setSelection();
1599                 // What is this test for ??? (JMarc)
1600                 if (!cur.selection())
1601                         deleteWordForward(cur);
1602                 else
1603                         cutSelection(cur, true, false);
1604         }
1605 }
1606
1607
1608 void LyXText::changeCase(LCursor & cur, LyXText::TextCase action)
1609 {
1610         BOOST_ASSERT(this == cur.text());
1611         CursorSlice from;
1612         CursorSlice to;
1613
1614         if (cur.selection()) {
1615                 from = cur.selBegin();
1616                 to = cur.selEnd();
1617         } else {
1618                 from = cur.top();
1619                 getWord(from, to, lyx::PARTIAL_WORD);
1620                 cursorRightOneWord(cur);
1621         }
1622
1623         recordUndoSelection(cur);
1624
1625         pos_type pos = from.pos();
1626         int par = from.pit();
1627
1628         while (par != int(pars_.size()) && (pos != to.pos() || par != to.pit())) {
1629                 pit_type pit = par;
1630                 if (pos == pars_[pit].size()) {
1631                         ++par;
1632                         pos = 0;
1633                         continue;
1634                 }
1635                 char_type c = pars_[pit].getChar(pos);
1636                 if (c != Paragraph::META_INSET) {
1637                         switch (action) {
1638                         case text_lowercase:
1639                                 c = lowercase(c);
1640                                 break;
1641                         case text_capitalization:
1642                                 c = uppercase(c);
1643                                 action = text_lowercase;
1644                                 break;
1645                         case text_uppercase:
1646                                 c = uppercase(c);
1647                                 break;
1648                         }
1649                 }
1650 #ifdef WITH_WARNINGS
1651 #warning changes
1652 #endif
1653                 pars_[pit].setChar(pos, c);
1654                 ++pos;
1655         }
1656 }
1657
1658
1659 bool LyXText::erase(LCursor & cur)
1660 {
1661         BOOST_ASSERT(this == cur.text());
1662         bool needsUpdate = false;
1663
1664         if (cur.pos() != cur.lastpos()) {
1665                 recordUndo(cur, Undo::DELETE, cur.pit());
1666                 setCursorIntern(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
1667                 needsUpdate = backspace(cur);
1668                 if (cur.paragraph().lookupChange(cur.pos()) == Change::DELETED)
1669                         cur.posRight();
1670         } else if (cur.pit() != cur.lastpit()) {
1671                 LCursor scur = cur;
1672
1673                 setCursorIntern(cur, cur.pit() + 1, 0, false, false);
1674                 if (pars_[cur.pit()].layout() == pars_[scur.pit()].layout()) {
1675                         recordUndo(scur, Undo::DELETE, scur.pit());
1676                         needsUpdate = backspace(cur);
1677                         if (cur.buffer().params().trackChanges) {
1678                                 // FIXME: Change tracking (MG)
1679                                 // move forward after the paragraph break is DELETED
1680                                 Paragraph & par = cur.paragraph();
1681                                 if (par.lookupChange(par.size()) == Change::DELETED)
1682                                         setCursorIntern(cur, cur.pit() + 1, 0);
1683                                 }
1684                 } else {
1685                         setCursorIntern(scur, scur.pit(), scur.pos(), false, scur.boundary());
1686                 }
1687         } else
1688                 needsUpdate = dissolveInset(cur);
1689
1690         return needsUpdate;
1691 }
1692
1693
1694 bool LyXText::backspacePos0(LCursor & cur)
1695 {
1696         BOOST_ASSERT(this == cur.text());
1697         bool needsUpdate = false;
1698
1699         Paragraph & par = cur.paragraph();
1700         // is it an empty paragraph?
1701         pos_type lastpos = cur.lastpos();
1702         if (lastpos == 0 || (lastpos == 1 && par.isSeparator(0))) {
1703                 // This is an empty paragraph and we delete it just
1704                 // by moving the cursor one step
1705                 // left and let the DeleteEmptyParagraphMechanism
1706                 // handle the actual deletion of the paragraph.
1707
1708                 if (cur.pit() != 0) {
1709                         // For KeepEmpty layouts we need to get
1710                         // rid of the keepEmpty setting first.
1711                         // And the only way to do this is to
1712                         // reset the layout to something
1713                         // else: f.ex. the default layout.
1714                         if (par.allowEmpty()) {
1715                                 Buffer & buf = cur.buffer();
1716                                 BufferParams const & bparams = buf.params();
1717                                 par.layout(bparams.getLyXTextClass().defaultLayout());
1718                         }
1719
1720                         cursorLeft(cur);
1721                         return true;
1722                 }
1723         }
1724
1725         if (cur.pit() != 0)
1726                 recordUndo(cur, Undo::DELETE, cur.pit() - 1);
1727
1728         pit_type tmppit = cur.pit();
1729         // We used to do cursorLeftIntern() here, but it is
1730         // not a good idea since it triggers the auto-delete
1731         // mechanism. So we do a cursorLeftIntern()-lite,
1732         // without the dreaded mechanism. (JMarc)
1733         if (cur.pit() != 0) {
1734                 // steps into the above paragraph.
1735                 setCursorIntern(cur, cur.pit() - 1,
1736                                 pars_[cur.pit() - 1].size(),
1737                                 false);
1738         }
1739
1740         // Pasting is not allowed, if the paragraphs have different
1741         // layout. I think it is a real bug of all other
1742         // word processors to allow it. It confuses the user.
1743         // Correction: Pasting is always allowed with standard-layout
1744         // Correction (Jug 20050717): Remove check about alignment!
1745         Buffer & buf = cur.buffer();
1746         BufferParams const & bufparams = buf.params();
1747         LyXTextClass const & tclass = bufparams.getLyXTextClass();
1748         pit_type const cpit = cur.pit();
1749
1750         if (cpit != tmppit
1751             && (pars_[cpit].layout() == pars_[tmppit].layout()
1752                 || pars_[tmppit].layout() == tclass.defaultLayout()))
1753         {
1754                 mergeParagraph(bufparams, pars_, cpit);
1755                 needsUpdate = true;
1756
1757                 if (cur.pos() != 0 && pars_[cpit].isSeparator(cur.pos() - 1))
1758                                 --cur.pos();
1759
1760                 // the counters may have changed
1761                 ParIterator par_it(cur);
1762                 updateLabels(cur.buffer(), par_it);
1763
1764                 setCursor(cur, cur.pit(), cur.pos(), false);
1765         }
1766         return needsUpdate;
1767 }
1768
1769
1770 bool LyXText::backspace(LCursor & cur)
1771 {
1772         BOOST_ASSERT(this == cur.text());
1773         bool needsUpdate = false;
1774         if (cur.pos() == 0) {
1775                 if (cur.pit() == 0)
1776                         return dissolveInset(cur);
1777
1778                 // The cursor is at the beginning of a paragraph, so
1779                 // the the backspace will collapse two paragraphs into
1780                 // one.
1781
1782                 if (cur.pit() != 0 && cur.buffer().params().trackChanges) {
1783                         // FIXME: Change tracking (MG)
1784                         // Previous paragraph, mark "carriage return" as
1785                         // deleted:
1786                         Paragraph & par = pars_[cur.pit() - 1];
1787                         // Take care of a just inserted para break:
1788                         if (par.lookupChange(par.size()) != Change::INSERTED) {
1789                                 par.setChange(par.size(), Change::DELETED);
1790                                 setCursorIntern(cur, cur.pit() - 1, par.size());
1791                                 return true;
1792                         }
1793                 }
1794
1795                 needsUpdate = backspacePos0(cur);
1796
1797         } else {
1798                 // this is the code for a normal backspace, not pasting
1799                 // any paragraphs
1800                 recordUndo(cur, Undo::DELETE);
1801                 // We used to do cursorLeftIntern() here, but it is
1802                 // not a good idea since it triggers the auto-delete
1803                 // mechanism. So we do a cursorLeftIntern()-lite,
1804                 // without the dreaded mechanism. (JMarc)
1805                 setCursorIntern(cur, cur.pit(), cur.pos() - 1,
1806                                 false, cur.boundary());
1807                 cur.paragraph().erase(cur.pos());
1808         }
1809
1810         if (cur.pos() == cur.lastpos())
1811                 setCurrentFont(cur);
1812
1813         setCursor(cur, cur.pit(), cur.pos(), false, cur.boundary());
1814
1815         return needsUpdate;
1816 }
1817
1818
1819 bool LyXText::dissolveInset(LCursor & cur) {
1820         BOOST_ASSERT(this == cur.text());
1821
1822         if (isMainText() || cur.inset().nargs() != 1)
1823                 return false;
1824
1825         recordUndoInset(cur);
1826         cur.selHandle(false);
1827         // save position
1828         lyx::pos_type spos = cur.pos();
1829         lyx::pit_type spit = cur.pit();
1830         ParagraphList plist;
1831         if (cur.lastpit() != 0 || cur.lastpos() != 0)
1832                 plist = paragraphs();
1833         cur.popLeft();
1834         // store cursor offset
1835         if (spit == 0)
1836                 spos += cur.pos();
1837         spit += cur.pit();
1838         cur.paragraph().erase(cur.pos());
1839         if (!plist.empty()) {
1840                 Buffer & b = cur.buffer();
1841                 pasteParagraphList(cur, plist, b.params().textclass,
1842                                    b.errorList("Paste"));
1843                 // restore position
1844                 cur.pit() = std::min(cur.lastpit(), spit);
1845                 cur.pos() = std::min(cur.lastpos(), spos);
1846         }
1847         cur.clearSelection();
1848         cur.resetAnchor();
1849         return true;
1850 }
1851
1852
1853 Row const & LyXText::firstRow() const
1854 {
1855         return *paragraphs().front().rows().begin();
1856 }
1857
1858
1859 bool LyXText::redoParagraph(pit_type const pit)
1860 {
1861         // remove rows of paragraph, keep track of height changes
1862         Paragraph & par = pars_[pit];
1863
1864         // Add bibitem insets if necessary
1865         if (par.layout()->labeltype == LABEL_BIBLIO) {
1866                 bool hasbibitem(false);
1867                 if (!par.insetlist.empty()
1868                         // Insist on it being in pos 0
1869                         && par.getChar(0) == Paragraph::META_INSET) {
1870                         InsetBase * inset = par.insetlist.begin()->inset;
1871                         if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
1872                                 hasbibitem = true;
1873                 }
1874                 if (!hasbibitem) {
1875                         InsetBibitem * inset(new
1876                                 InsetBibitem(InsetCommandParams("bibitem")));
1877                         par.insertInset(0, static_cast<InsetBase *>(inset));
1878                         bv()->cursor().posRight();
1879                 }
1880         }
1881
1882         // redo insets
1883         // FIXME: We should always use getFont(), see documentation of
1884         // noFontChange() in insetbase.h.
1885         LyXFont const bufferfont = bv()->buffer()->params().getFont();
1886         InsetList::iterator ii = par.insetlist.begin();
1887         InsetList::iterator iend = par.insetlist.end();
1888         for (; ii != iend; ++ii) {
1889                 Dimension dim;
1890                 int const w = maxwidth_ - leftMargin(pit, ii->pos) - rightMargin(par);
1891                 LyXFont const & font = ii->inset->noFontChange() ?
1892                         bufferfont :
1893                         getFont(par, ii->pos);
1894                 MetricsInfo mi(bv(), font, w);
1895                 ii->inset->metrics(mi, dim);
1896         }
1897
1898         // rebreak the paragraph
1899         par.rows().clear();
1900         Dimension dim;
1901
1902         par.setBeginOfBody();
1903         pos_type z = 0;
1904         do {
1905                 Row row(z);
1906                 rowBreakPoint(pit, row);
1907                 setRowWidth(pit, row);
1908                 setHeightOfRow(pit, row);
1909                 par.rows().push_back(row);
1910                 dim.wid = std::max(dim.wid, row.width());
1911                 dim.des += row.height();
1912                 z = row.endpos();
1913         } while (z < par.size());
1914
1915         // Make sure that if a par ends in newline, there is one more row
1916         // under it
1917         // FIXME this is a dirty trick. Now the _same_ position in the
1918         // paragraph occurs in _two_ different rows, and has two different
1919         // display positions, leading to weird behaviour when moving up/down.
1920         if (z > 0 && par.isNewline(z - 1)) {
1921                 Row row(z - 1);
1922                 row.endpos(z - 1);
1923                 setRowWidth(pit, row);
1924                 setHeightOfRow(pit, row);
1925                 par.rows().push_back(row);
1926                 dim.des += row.height();
1927         }
1928
1929         dim.asc += par.rows()[0].ascent();
1930         dim.des -= par.rows()[0].ascent();
1931
1932         bool const same = dim == par.dim();
1933
1934         par.dim() = dim;
1935         //lyxerr << "redoParagraph: " << par.rows().size() << " rows\n";
1936
1937         return !same;
1938 }
1939
1940
1941 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
1942 {
1943         //BOOST_ASSERT(mi.base.textwidth);
1944         if (mi.base.textwidth)
1945                 maxwidth_ = mi.base.textwidth;
1946         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth
1947         //      << " maxWidth: " << maxwidth_ << "\nfont: " << mi.base.font << endl;
1948         // save the caller's font locally:
1949         font_ = mi.base.font;
1950
1951         unsigned int h = 0;
1952         unsigned int w = 0;
1953         for (pit_type pit = 0, n = paragraphs().size(); pit != n; ++pit) {
1954                 redoParagraph(pit);
1955                 Paragraph & par = paragraphs()[pit];
1956                 h += par.height();
1957                 if (w < par.width())
1958                         w = par.width();
1959         }
1960
1961         dim.wid = w;
1962         dim.asc = pars_[0].ascent();
1963         dim.des = h - dim.asc;
1964
1965         dim_ = dim;
1966 }
1967
1968
1969 // only used for inset right now. should also be used for main text
1970 void LyXText::draw(PainterInfo & pi, int x, int y) const
1971 {
1972         paintTextInset(*this, pi, x, y);
1973 }
1974
1975
1976 #if 0
1977 // only used for inset right now. should also be used for main text
1978 void LyXText::drawSelection(PainterInfo & pi, int x , int) const
1979 {
1980         LCursor & cur = pi.base.bv->cursor();
1981         if (!cur.selection())
1982                 return;
1983         if (!ptr_cmp(cur.text(), this))
1984                 return;
1985
1986         lyxerr << "draw selection at " << x << endl;
1987
1988         DocIterator beg = cur.selectionBegin();
1989         DocIterator end = cur.selectionEnd();
1990
1991         // the selection doesn't touch the visible screen
1992         if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_BELOW
1993             || bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_ABOVE)
1994                 return;
1995
1996         Paragraph const & par1 = pars_[beg.pit()];
1997         Paragraph const & par2 = pars_[end.pit()];
1998
1999         Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
2000         Row const & row2 = par2.getRow(end.pos(), end.boundary());
2001
2002         int y1,x1,x2;
2003         if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_ABOVE) {
2004                 y1 = 0;
2005                 x1 = 0;
2006                 x2 = 0;
2007         } else {
2008                 y1 = bv_funcs::getPos(beg).y_ - row1.ascent();
2009                 int const startx = cursorX(beg.top(), begin.boundary());
2010                 x1 = isRTL(par1) ? startx : 0;
2011                 x2 = isRTL(par1) ? 0 + dim_.wid : startx;
2012         }
2013
2014         int y2,X1,X2;
2015         if (bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_BELOW) {
2016                 y2 = pi.base.bv->workHeight();
2017                 X1 = 0;
2018                 X2 = 0;
2019         } else {
2020                 y2 = bv_funcs::getPos(end).y_ + row2.descent();
2021                 int const endx = cursorX(end.top(), end.boundary());
2022                 X1 = isRTL(par2) ? 0 : endx;
2023                 X2 = isRTL(par2) ? endx : 0 + dim_.wid;
2024         }
2025
2026         lyxerr << " y1: " << y1 << " y2: " << y2
2027                 << " xo: " << xo_ << " wid: " << dim_.wid
2028                 << endl;
2029
2030         // paint big rectangle in one go
2031         pi.pain.fillRectangle(x, y1, dim_.wid, y2 - y1, LColor::selection);
2032
2033         // reset background at begin of first selected line
2034         pi.pain.fillRectangle(x + x1, y1, x2 - x1, row1.height(),
2035                 LColor::background);
2036
2037         // reset background at end of last selected line
2038         pi.pain.fillRectangle(x + X1, y2  - row2.height(),
2039                 X2 - X1, row2.height(), LColor::background);
2040 }
2041
2042 #else
2043
2044 void LyXText::drawSelection(PainterInfo & pi, int x, int) const
2045 {
2046         LCursor & cur = pi.base.bv->cursor();
2047         if (!cur.selection())
2048                 return;
2049         if (!ptr_cmp(cur.text(), this))
2050                 return;
2051
2052         lyxerr[Debug::DEBUG]
2053                 << BOOST_CURRENT_FUNCTION
2054                 << "draw selection at " << x
2055                 << endl;
2056
2057         DocIterator beg = cur.selectionBegin();
2058         DocIterator end = cur.selectionEnd();
2059
2060         // the selection doesn't touch the visible screen
2061         if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_BELOW
2062             || bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_ABOVE)
2063                 return;
2064
2065         Paragraph const & par1 = pars_[beg.pit()];
2066         Paragraph const & par2 = pars_[end.pit()];
2067
2068         bool const above = (bv_funcs::status(pi.base.bv, beg)
2069                             == bv_funcs::CUR_ABOVE);
2070         bool const below = (bv_funcs::status(pi.base.bv, end)
2071                             == bv_funcs::CUR_BELOW);
2072         int y1,y2,x1,x2;
2073         if (above) {
2074                 y1 = 0;
2075                 y2 = 0;
2076                 x1 = 0;
2077                 x2 = dim_.wid;
2078         } else {
2079                 Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
2080                 y1 = bv_funcs::getPos(beg, beg.boundary()).y_ - row1.ascent();
2081                 y2 = y1 + row1.height();
2082                 int const startx = cursorX(beg.top(), beg.boundary());
2083                 x1 = !isRTL(par1) ? startx : 0;
2084                 x2 = !isRTL(par1) ? 0 + dim_.wid : startx;
2085         }
2086
2087         int Y1,Y2,X1,X2;
2088         if (below) {
2089                 Y1 = pi.base.bv->workHeight();
2090                 Y2 = pi.base.bv->workHeight();
2091                 X1 = 0;
2092                 X2 = dim_.wid;
2093         } else {
2094                 Row const & row2 = par2.getRow(end.pos(), end.boundary());
2095                 Y1 = bv_funcs::getPos(end, end.boundary()).y_ - row2.ascent();
2096                 Y2 = Y1 + row2.height();
2097                 int const endx = cursorX(end.top(), end.boundary());
2098                 X1 = !isRTL(par2) ? 0 : endx;
2099                 X2 = !isRTL(par2) ? endx : 0 + dim_.wid;
2100         }
2101
2102         if (!above && !below && &par1.getRow(beg.pos(), beg.boundary())
2103             == &par2.getRow(end.pos(), end.boundary()))
2104         {
2105                 // paint only one rectangle
2106                 int const b( !isRTL(par1) ? x + x1 : x + X1 );
2107                 int const w( !isRTL(par1) ? X2 - x1 : x2 - X1 );
2108                 pi.pain.fillRectangle(b, y1, w, y2 - y1, LColor::selection);
2109                 return;
2110         }
2111
2112         lyxerr[Debug::DEBUG] << " y1: " << y1 << " y2: " << y2
2113                << "X1:" << X1 << " x2: " << X2 << " wid: " << dim_.wid
2114                 << endl;
2115
2116         // paint upper rectangle
2117         pi.pain.fillRectangle(x + x1, y1, x2 - x1, y2 - y1,
2118                                       LColor::selection);
2119         // paint bottom rectangle
2120         pi.pain.fillRectangle(x + X1, Y1, X2 - X1, Y2 - Y1,
2121                                       LColor::selection);
2122         // paint center rectangle
2123         pi.pain.fillRectangle(x, y2, dim_.wid,
2124                               Y1 - y2, LColor::selection);
2125 }
2126 #endif
2127
2128 bool LyXText::isLastRow(pit_type pit, Row const & row) const
2129 {
2130         return row.endpos() >= pars_[pit].size()
2131                 && pit + 1 == pit_type(paragraphs().size());
2132 }
2133
2134
2135 bool LyXText::isFirstRow(pit_type pit, Row const & row) const
2136 {
2137         return row.pos() == 0 && pit == 0;
2138 }
2139
2140
2141 void LyXText::getWord(CursorSlice & from, CursorSlice & to,
2142         word_location const loc)
2143 {
2144         Paragraph const & from_par = pars_[from.pit()];
2145         switch (loc) {
2146         case lyx::WHOLE_WORD_STRICT:
2147                 if (from.pos() == 0 || from.pos() == from_par.size()
2148                     || !from_par.isLetter(from.pos())
2149                     || !from_par.isLetter(from.pos() - 1)) {
2150                         to = from;
2151                         return;
2152                 }
2153                 // no break here, we go to the next
2154
2155         case lyx::WHOLE_WORD:
2156                 // If we are already at the beginning of a word, do nothing
2157                 if (!from.pos() || !from_par.isLetter(from.pos() - 1))
2158                         break;
2159                 // no break here, we go to the next
2160
2161         case lyx::PREVIOUS_WORD:
2162                 // always move the cursor to the beginning of previous word
2163                 while (from.pos() && from_par.isLetter(from.pos() - 1))
2164                         --from.pos();
2165                 break;
2166         case lyx::NEXT_WORD:
2167                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
2168                        << endl;
2169                 break;
2170         case lyx::PARTIAL_WORD:
2171                 // no need to move the 'from' cursor
2172                 break;
2173         }
2174         to = from;
2175         Paragraph & to_par = pars_[to.pit()];
2176         while (to.pos() < to_par.size() && to_par.isLetter(to.pos()))
2177                 ++to.pos();
2178 }
2179
2180
2181 void LyXText::write(Buffer const & buf, std::ostream & os) const
2182 {
2183         ParagraphList::const_iterator pit = paragraphs().begin();
2184         ParagraphList::const_iterator end = paragraphs().end();
2185         Paragraph::depth_type dth = 0;
2186         for (; pit != end; ++pit)
2187                 pit->write(buf, os, buf.params(), dth);
2188 }
2189
2190
2191 bool LyXText::read(Buffer const & buf, LyXLex & lex, ErrorList & errorList)
2192 {
2193         Paragraph::depth_type depth = 0;
2194
2195         while (lex.isOK()) {
2196                 lex.nextToken();
2197                 string const token = lex.getString();
2198
2199                 if (token.empty())
2200                         continue;
2201
2202                 if (token == "\\end_inset") {
2203                         break;
2204                 }
2205
2206                 if (token == "\\end_body") {
2207                         continue;
2208                 }
2209
2210                 if (token == "\\begin_body") {
2211                         continue;
2212                 }
2213
2214                 if (token == "\\end_document") {
2215                         return false;
2216                 }
2217
2218                 if (token == "\\begin_layout") {
2219                         lex.pushToken(token);
2220
2221                         Paragraph par;
2222                         par.params().depth(depth);
2223                         par.setFont(0, LyXFont(LyXFont::ALL_INHERIT, buf.params().language));
2224                         pars_.push_back(par);
2225
2226                         // FIXME: goddamn InsetTabular makes us pass a Buffer
2227                         // not BufferParams
2228                         ::readParagraph(buf, pars_.back(), lex, errorList);
2229
2230                 } else if (token == "\\begin_deeper") {
2231                         ++depth;
2232                 } else if (token == "\\end_deeper") {
2233                         if (!depth) {
2234                                 lex.printError("\\end_deeper: " "depth is already null");
2235                         } else {
2236                                 --depth;
2237                         }
2238                 } else {
2239                         lyxerr << "Handling unknown body token: `"
2240                                << token << '\'' << endl;
2241                 }
2242         }
2243         return true;
2244 }
2245
2246
2247 int LyXText::ascent() const
2248 {
2249         return dim_.asc;
2250 }
2251
2252
2253 int LyXText::descent() const
2254 {
2255         return dim_.des;
2256 }
2257
2258
2259 int LyXText::cursorX(CursorSlice const & sl, bool boundary) const
2260 {
2261         pit_type const pit = sl.pit();
2262         Paragraph const & par = pars_[pit];
2263         if (par.rows().empty())
2264                 return 0;
2265
2266         pos_type ppos = sl.pos();
2267         // Correct position in front of big insets
2268         bool const boundary_correction = ppos != 0 && boundary;
2269         if (boundary_correction)
2270                 --ppos;
2271
2272         Row const & row = par.getRow(sl.pos(), boundary);
2273
2274         pos_type cursor_vpos = 0;
2275
2276         RowMetrics const m = computeRowMetrics(pit, row);
2277         double x = m.x;
2278
2279         pos_type const row_pos  = row.pos();
2280         pos_type const end      = row.endpos();
2281
2282         if (end <= row_pos)
2283                 cursor_vpos = row_pos;
2284         else if (ppos >= end)
2285                 cursor_vpos = isRTL(par) ? row_pos : end;
2286         else if (ppos > row_pos && ppos >= end)
2287                 // Place cursor after char at (logical) position pos - 1
2288                 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
2289                         ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
2290         else
2291                 // Place cursor before char at (logical) position ppos
2292                 cursor_vpos = (bidi.level(ppos) % 2 == 0)
2293                         ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
2294
2295         pos_type body_pos = par.beginOfBody();
2296         if (body_pos > 0 &&
2297             (body_pos > end || !par.isLineSeparator(body_pos - 1)))
2298                 body_pos = 0;
2299
2300         // Use font span to speed things up, see below
2301         FontSpan font_span;
2302         LyXFont font;
2303         FontMetrics const & labelfm = theApp->fontLoader().metrics(getLabelFont(par));
2304
2305         for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
2306                 pos_type pos = bidi.vis2log(vpos);
2307                 if (body_pos > 0 && pos == body_pos - 1) {
2308                         string lsep = par.layout()->labelsep;
2309                         docstring dlsep(lsep.begin(), lsep.end());
2310                         x += m.label_hfill + labelfm.width(dlsep);
2311                         if (par.isLineSeparator(body_pos - 1))
2312                                 x -= singleWidth(par, body_pos - 1);
2313                 }
2314
2315                 // Use font span to speed things up, see above
2316                 if (pos < font_span.first || pos > font_span.last) {
2317                         font_span = par.fontSpan(pos);
2318                         font = getFont(par, pos);
2319                 }
2320
2321                 x += singleWidth(par, pos, par.getChar(pos), font);
2322
2323                 if (hfillExpansion(par, row, pos))
2324                         x += (pos >= body_pos) ? m.hfill : m.label_hfill;
2325                 else if (par.isSeparator(pos) && pos >= body_pos)
2326                         x += m.separator;
2327         }
2328
2329         // see correction above
2330         if (boundary_correction)
2331                 if (getFont(par, ppos).isVisibleRightToLeft())
2332                         x -= singleWidth(par, ppos);
2333                 else
2334                         x += singleWidth(par, ppos);
2335
2336         // Make sure inside an inset we always count from the left
2337         // edge (bidi!) -- MV
2338         if (sl.pos() < par.size()) {
2339                 font = getFont(par, sl.pos());
2340                 if (!boundary && font.isVisibleRightToLeft()
2341                   && par.isInset(sl.pos()))
2342                         x -= par.getInset(sl.pos())->width();
2343         }
2344         return int(x);
2345 }
2346
2347
2348 int LyXText::cursorY(CursorSlice const & sl, bool boundary) const
2349 {
2350         //lyxerr << "LyXText::cursorY: boundary: " << boundary << std::endl;
2351         Paragraph const & par = getPar(sl.pit());
2352         if (par.rows().empty())
2353                 return 0;
2354
2355         int h = 0;
2356         h -= pars_[0].rows()[0].ascent();
2357         for (pit_type pit = 0; pit < sl.pit(); ++pit)
2358                 h += pars_[pit].height();
2359         int pos = sl.pos();
2360         if (pos && boundary)
2361                 --pos;
2362         size_t const rend = par.pos2row(pos);
2363         for (size_t rit = 0; rit != rend; ++rit)
2364                 h += par.rows()[rit].height();
2365         h += par.rows()[rend].ascent();
2366         return h;
2367 }
2368
2369
2370 // Returns the current font and depth as a message.
2371 string LyXText::currentState(LCursor & cur)
2372 {
2373         BOOST_ASSERT(this == cur.text());
2374         Buffer & buf = cur.buffer();
2375         Paragraph const & par = cur.paragraph();
2376         std::ostringstream os;
2377
2378         bool const show_change = par.lookupChange(cur.pos()) != Change::UNCHANGED;
2379
2380         if (buf.params().trackChanges)
2381                 os << "[C] ";
2382
2383         if (show_change) {
2384                 Change change = par.lookupChange(cur.pos());
2385                 Author const & a = buf.params().authors().get(change.author);
2386                 os << lyx::to_utf8(_("Change: ")) << a.name();
2387                 if (!a.email().empty())
2388                         os << " (" << a.email() << ")";
2389                 if (change.changetime)
2390                         os << lyx::to_utf8(_(" at ")) << ctime(&change.changetime);
2391                 os << " : ";
2392         }
2393
2394         // I think we should only show changes from the default
2395         // font. (Asger)
2396         // No, from the document font (MV)
2397         LyXFont font = real_current_font;
2398         font.reduce(buf.params().getFont());
2399
2400         // avoid lyx::to_utf8(_(...)) re-entrance problem
2401         string const s = font.stateText(&buf.params());
2402         os << lyx::to_utf8(bformat(_("Font: %1$s"), lyx::from_utf8(s)));
2403
2404         // os << lyx::to_utf8(bformat(_("Font: %1$s"), font.stateText(&buf.params)));
2405
2406         // The paragraph depth
2407         int depth = cur.paragraph().getDepth();
2408         if (depth > 0)
2409                 os << lyx::to_utf8(bformat(_(", Depth: %1$d"), depth));
2410
2411         // The paragraph spacing, but only if different from
2412         // buffer spacing.
2413         Spacing const & spacing = par.params().spacing();
2414         if (!spacing.isDefault()) {
2415                 os << lyx::to_utf8(_(", Spacing: "));
2416                 switch (spacing.getSpace()) {
2417                 case Spacing::Single:
2418                         os << lyx::to_utf8(_("Single"));
2419                         break;
2420                 case Spacing::Onehalf:
2421                         os << lyx::to_utf8(_("OneHalf"));
2422                         break;
2423                 case Spacing::Double:
2424                         os << lyx::to_utf8(_("Double"));
2425                         break;
2426                 case Spacing::Other:
2427                         os << lyx::to_utf8(_("Other (")) << spacing.getValueAsString() << ')';
2428                         break;
2429                 case Spacing::Default:
2430                         // should never happen, do nothing
2431                         break;
2432                 }
2433         }
2434
2435 #ifdef DEVEL_VERSION
2436         os << lyx::to_utf8(_(", Inset: ")) << &cur.inset();
2437         os << lyx::to_utf8(_(", Paragraph: ")) << cur.pit();
2438         os << lyx::to_utf8(_(", Id: ")) << par.id();
2439         os << lyx::to_utf8(_(", Position: ")) << cur.pos();
2440         os << lyx::to_utf8(_(", Boundary: ")) << cur.boundary();
2441 //      Row & row = cur.textRow();
2442 //      os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
2443 #endif
2444         return os.str();
2445 }
2446
2447
2448 string LyXText::getPossibleLabel(LCursor & cur) const
2449 {
2450         pit_type pit = cur.pit();
2451
2452         LyXLayout_ptr layout = pars_[pit].layout();
2453
2454         if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
2455                 LyXLayout_ptr const & layout2 = pars_[pit - 1].layout();
2456                 if (layout2->latextype != LATEX_PARAGRAPH) {
2457                         --pit;
2458                         layout = layout2;
2459                 }
2460         }
2461
2462         string name = layout->latexname();
2463
2464         // for captions, we want the abbreviation of the float type
2465         if (layout->labeltype == LABEL_SENSITIVE) {
2466                 // Search for the first float or wrap inset in the iterator
2467                 size_t i = cur.depth();
2468                 while (i > 0) {
2469                         --i;
2470                         InsetBase * const in = &cur[i].inset();
2471                         if (in->lyxCode() == InsetBase::FLOAT_CODE
2472                             || in->lyxCode() == InsetBase::WRAP_CODE) {
2473                                 name = in->getInsetName();
2474                                 break;
2475                         }
2476                 }
2477         }
2478
2479         string text = name.substr(0, 3);
2480         if (name == "theorem")
2481                 text = "thm"; // Create a correct prefix for prettyref
2482
2483         text += ':';
2484         if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
2485                 text.erase();
2486
2487         string par_text = pars_[pit].asString(cur.buffer(), false);
2488         for (int i = 0; i < lyxrc.label_init_length; ++i) {
2489                 if (par_text.empty())
2490                         break;
2491                 string head;
2492                 par_text = split(par_text, head, ' ');
2493                 // Is it legal to use spaces in labels ?
2494                 if (i > 0)
2495                         text += '-';
2496                 text += head;
2497         }
2498
2499         return text;
2500 }
2501
2502
2503 //pos_type LyXText::x2pos(pit_type pit, int row, int x) const
2504 //{
2505 //      int lastx = 0;
2506 //      int currx = 0;
2507 //      Paragraph const & par = pars_[pit];
2508 //      Row const & r = par.rows()[row];
2509 //      int pos = r.pos();
2510 //      for (; currx < x && pos < r.endpos(); ++pos) {
2511 //              lastx = currx;
2512 //              currx += singleWidth(par, pos);
2513 //      }
2514 //      if (abs(lastx - x) < abs(currx - x) && pos != r.pos())
2515 //              --pos;
2516 //      return pos;
2517 //}
2518
2519
2520 pos_type LyXText::x2pos(pit_type pit, int row, int x) const
2521 {
2522         BOOST_ASSERT(row < int(pars_[pit].rows().size()));
2523         bool bound = false;
2524         Row const & r = pars_[pit].rows()[row];
2525         return r.pos() + getColumnNearX(pit, r, x, bound);
2526 }
2527
2528
2529 //int LyXText::pos2x(pit_type pit, pos_type pos) const
2530 //{
2531 //      Paragraph const & par = pars_[pit];
2532 //      Row const & r = par.rows()[row];
2533 //      int x = 0;
2534 //      pos -= r.pos();
2535 //}
2536
2537
2538 // x,y are screen coordinates
2539 // sets cursor only within this LyXText
2540 bool LyXText::setCursorFromCoordinates(LCursor & cur, int const x, int const y)
2541 {
2542         BOOST_ASSERT(this == cur.text());
2543         pit_type pit = getPitNearY(y);
2544         int yy = theCoords.get(this, pit).y_ - pars_[pit].ascent();
2545         lyxerr[Debug::DEBUG]
2546                 << BOOST_CURRENT_FUNCTION
2547                 << ": x: " << x
2548                 << " y: " << y
2549                 << " pit: " << pit
2550                 << " yy: " << yy << endl;
2551
2552         Paragraph const & par = pars_[pit];
2553         int r = 0;
2554         BOOST_ASSERT(par.rows().size());
2555         for (; r < int(par.rows().size()) - 1; ++r) {
2556                 Row const & row = par.rows()[r];
2557                 if (int(yy + row.height()) > y)
2558                         break;
2559                 yy += row.height();
2560         }
2561
2562         Row const & row = par.rows()[r];
2563
2564         lyxerr[Debug::DEBUG]
2565                 << BOOST_CURRENT_FUNCTION
2566                 << ": row " << r
2567                 << " from pos: " << row.pos()
2568                 << endl;
2569
2570         bool bound = false;
2571         int xx = x;
2572         pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
2573
2574         lyxerr[Debug::DEBUG]
2575                 << BOOST_CURRENT_FUNCTION
2576                 << ": setting cursor pit: " << pit
2577                 << " pos: " << pos
2578                 << endl;
2579
2580         return setCursor(cur, pit, pos, true, bound);
2581 }