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 "buffer.h"
  22 #include "bufferparams.h"
  23 #include "BufferView.h"
  24 #include "debug.h"
  25 #include "encoding.h"
  26 #include "funcrequest.h"
  27 #include "gettext.h"
  28 #include "language.h"
  29 #include "LColor.h"
  30 #include "lyxlength.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "lyxrow_funcs.h"
  34 #include "metricsinfo.h"
  35 #include "paragraph.h"
  36 #include "paragraph_funcs.h"
  37 #include "ParagraphParameters.h"
  38 #include "rowpainter.h"
  39 #include "text_funcs.h"
  40 #include "undo.h"
  41 #include "vspace.h"
  42 #include "WordLangTuple.h"
  43
  44 #include "frontends/font_metrics.h"
  45 #include "frontends/LyXView.h"
  46
  47 #include "insets/insettext.h"
  48
  49 #include "support/lstrings.h"
  50 #include "support/textutils.h"
  51
  52 using bv_funcs::number;
  53
  54 using lyx::pos_type;
  55 using lyx::word_location;
  56
  57 using lyx::support::contains;
  58 using lyx::support::lowercase;
  59 using lyx::support::uppercase;
  60
  61 using std::max;
  62 using std::endl;
  63 using std::string;
  64
  65
  66 /// top, right, bottom pixel margin
  67 extern int const PAPER_MARGIN = 20;
  68 /// margin for changebar
  69 extern int const CHANGEBAR_MARGIN = 10;
  70 /// left margin
  71 extern int const LEFT_MARGIN = PAPER_MARGIN + CHANGEBAR_MARGIN;
  72
  73
  74
  75 int bibitemMaxWidth(BufferView *, LyXFont const &);
  76
  77
  78 namespace {
  79
  80 unsigned int maxParagraphWidth(ParagraphList const & plist)
  81 {
  82         unsigned int width = 0;
  83         ParagraphList::const_iterator pit = plist.begin();
  84         ParagraphList::const_iterator end = plist.end();
  85                 for (; pit != end; ++pit)
  86                         width = std::max(width, pit->width);
  87         return width;
  88 }
  89
  90 } // namespace anon
  91
  92
  93 BufferView * LyXText::bv()
  94 {
  95         BOOST_ASSERT(bv_owner != 0);
  96         return bv_owner;
  97 }
  98
  99
 100 BufferView * LyXText::bv() const
 101 {
 102         BOOST_ASSERT(bv_owner != 0);
 103         return bv_owner;
 104 }
 105
 106
 107 void LyXText::updateRowPositions()
 108 {
 109         ParagraphList::iterator pit = ownerParagraphs().begin();
 110         ParagraphList::iterator end = ownerParagraphs().end();
 111         for (height = 0; pit != end; ++pit) {
 112                 pit->y = height;
 113                 height += pit->height;
 114         }
 115 }
 116
 117
 118 int LyXText::workWidth() const
 119 {
 120         return inset_owner ? inset_owner->textWidth() : bv()->workWidth();
 121 }
 122
 123
 124 int LyXText::getRealCursorX() const
 125 {
 126         int x = cursor.x();
 127         if (the_locking_inset && the_locking_inset->getLyXText(bv()) != this)
 128                 x = the_locking_inset->getLyXText(bv())->getRealCursorX();
 129         return x;
 130 }
 131
 132
 133 #warning FIXME  This function seems to belong outside of LyxText.
 134 unsigned char LyXText::transformChar(unsigned char c, Paragraph const & par,
 135                                      pos_type pos) const
 136 {
 137         if (!Encodings::is_arabic(c))
 138                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
 139                         return c + (0xb0 - '0');
 140                 else
 141                         return c;
 142
 143         unsigned char const prev_char = pos > 0 ? par.getChar(pos - 1) : ' ';
 144         unsigned char next_char = ' ';
 145
 146         pos_type const par_size = par.size();
 147
 148         for (pos_type i = pos + 1; i < par_size; ++i) {
 149                 unsigned char const par_char = par.getChar(i);
 150                 if (!Encodings::IsComposeChar_arabic(par_char)) {
 151                         next_char = par_char;
 152                         break;
 153                 }
 154         }
 155
 156         if (Encodings::is_arabic(next_char)) {
 157                 if (Encodings::is_arabic(prev_char) &&
 158                         !Encodings::is_arabic_special(prev_char))
 159                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
 160                 else
 161                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
 162         } else {
 163                 if (Encodings::is_arabic(prev_char) &&
 164                         !Encodings::is_arabic_special(prev_char))
 165                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
 166                 else
 167                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
 168         }
 169 }
 170
 171 // This is the comments that some of the warnings below refers to.
 172 // There are some issues in this file and I don't think they are
 173 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
 174 // this is a problem that has been here almost from day one and that a
 175 // larger userbase with different access patters triggers the bad
 176 // behaviour. (segfaults.) What I think happen is: In several places
 177 // we store the paragraph in the current cursor and then moves the
 178 // cursor. This movement of the cursor will delete paragraph at the
 179 // old position if it is now empty. This will make the temporary
 180 // pointer to the old cursor paragraph invalid and dangerous to use.
 181 // And is some cases this will trigger a segfault. I have marked some
 182 // of the cases where this happens with a warning, but I am sure there
 183 // are others in this file and in text2.C. There is also a note in
 184 // Delete() that you should read. In Delete I store the paragraph->id
 185 // instead of a pointer to the paragraph. I am pretty sure this faulty
 186 // use of temporary pointers to paragraphs that might have gotten
 187 // invalidated (through a cursor movement) before they are used, are
 188 // the cause of the strange crashes we get reported often.
 189 //
 190 // It is very tiresom to change this code, especially when it is as
 191 // hard to read as it is. Help to fix all the cases where this is done
 192 // would be greately appreciated.
 193 //
 194 // Lgb
 195
 196 int LyXText::singleWidth(ParagraphList::iterator pit, pos_type pos) const
 197 {
 198         if (pos >= pit->size())
 199                 return 0;
 200
 201         char const c = pit->getChar(pos);
 202         LyXFont const & font = getFont(pit, pos);
 203         return singleWidth(pit, pos, c, font);
 204 }
 205
 206
 207 int LyXText::singleWidth(ParagraphList::iterator pit,
 208                          pos_type pos, char c, LyXFont const & font) const
 209 {
 210         if (pos >= pit->size()) {
 211                 lyxerr << "in singleWidth(), pos: " << pos << endl;
 212                 BOOST_ASSERT(false);
 213                 return 0;
 214         }
 215
 216
 217         // The most common case is handled first (Asger)
 218         if (IsPrintable(c)) {
 219                 if (!font.language()->RightToLeft()) {
 220                         if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 221                              lyxrc.font_norm_type == LyXRC::ISO_10646_1)
 222                             && font.language()->lang() == "arabic") {
 223                                 if (Encodings::IsComposeChar_arabic(c))
 224                                         return 0;
 225                                 else
 226                                         c = transformChar(c, *pit, pos);
 227                         } else if (font.language()->lang() == "hebrew" &&
 228                                  Encodings::IsComposeChar_hebrew(c))
 229                                 return 0;
 230                 }
 231                 return font_metrics::width(c, font);
 232         }
 233
 234         if (c == Paragraph::META_INSET) {
 235                 InsetOld * tmpinset = pit->getInset(pos);
 236                 BOOST_ASSERT(tmpinset);
 237                 if (tmpinset->lyxCode() == InsetOld::HFILL_CODE) {
 238                         // Because of the representation as vertical lines
 239                         return 3;
 240                 }
 241                 return tmpinset->width();
 242         }
 243
 244         if (IsSeparatorChar(c))
 245                 c = ' ';
 246         return font_metrics::width(c, font);
 247 }
 248
 249
 250 int LyXText::leftMargin(ParagraphList::iterator pit, Row const & row) const
 251 {
 252         LyXTextClass const & tclass =
 253                 bv()->buffer()->params().getLyXTextClass();
 254         LyXLayout_ptr const & layout = pit->layout();
 255
 256         string parindent = layout->parindent;
 257
 258         int x = LEFT_MARGIN;
 259
 260         x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
 261
 262         // this is the way, LyX handles the LaTeX-Environments.
 263         // I have had this idea very late, so it seems to be a
 264         // later added hack and this is true
 265         if (!pit->getDepth()) {
 266                 if (pit->layout() == tclass.defaultLayout()) {
 267                         // find the previous same level paragraph
 268                         if (pit != ownerParagraphs().begin()) {
 269                                 ParagraphList::iterator newpit =
 270                                         depthHook(pit, ownerParagraphs(),
 271                                                   pit->getDepth());
 272                                 if (newpit == pit &&
 273                                     newpit->layout()->nextnoindent)
 274                                         parindent.erase();
 275                         }
 276                 }
 277         } else {
 278                 // find the next level paragraph
 279
 280                 ParagraphList::iterator newpar = outerHook(pit,
 281                                                            ownerParagraphs());
 282
 283                 // make a corresponding row. Needed to call leftMargin()
 284
 285                 // check wether it is a sufficent paragraph
 286                 if (newpar != ownerParagraphs().end() &&
 287                     newpar->layout()->isEnvironment()) {
 288                         x = leftMargin(newpar, Row(newpar->size()));
 289                 }
 290
 291                 if (newpar != ownerParagraphs().end() &&
 292                     pit->layout() == tclass.defaultLayout()) {
 293                         if (newpar->params().noindent())
 294                                 parindent.erase();
 295                         else {
 296                                 parindent = newpar->layout()->parindent;
 297                         }
 298
 299                 }
 300         }
 301
 302         LyXFont const labelfont = getLabelFont(pit);
 303         switch (layout->margintype) {
 304         case MARGIN_DYNAMIC:
 305                 if (!layout->leftmargin.empty()) {
 306                         x += font_metrics::signedWidth(layout->leftmargin,
 307                                                   tclass.defaultfont());
 308                 }
 309                 if (!pit->getLabelstring().empty()) {
 310                         x += font_metrics::signedWidth(layout->labelindent,
 311                                                   labelfont);
 312                         x += font_metrics::width(pit->getLabelstring(),
 313                                             labelfont);
 314                         x += font_metrics::width(layout->labelsep, labelfont);
 315                 }
 316                 break;
 317         case MARGIN_MANUAL:
 318                 x += font_metrics::signedWidth(layout->labelindent, labelfont);
 319                 // The width of an empty par, even with manual label, should be 0
 320                 if (!pit->empty() && row.pos() >= pit->beginningOfBody()) {
 321                         if (!pit->getLabelWidthString().empty()) {
 322                                 x += font_metrics::width(pit->getLabelWidthString(),
 323                                                labelfont);
 324                                 x += font_metrics::width(layout->labelsep, labelfont);
 325                         }
 326                 }
 327                 break;
 328         case MARGIN_STATIC:
 329                 x += font_metrics::signedWidth(layout->leftmargin, tclass.defaultfont()) * 4
 330                         / (pit->getDepth() + 4);
 331                 break;
 332         case MARGIN_FIRST_DYNAMIC:
 333                 if (layout->labeltype == LABEL_MANUAL) {
 334                         if (row.pos() >= pit->beginningOfBody()) {
 335                                 x += font_metrics::signedWidth(layout->leftmargin,
 336                                                           labelfont);
 337                         } else {
 338                                 x += font_metrics::signedWidth(layout->labelindent,
 339                                                           labelfont);
 340                         }
 341                 } else if (row.pos()
 342                            // Special case to fix problems with
 343                            // theorems (JMarc)
 344                            || (layout->labeltype == LABEL_STATIC
 345                                && layout->latextype == LATEX_ENVIRONMENT
 346                                && !isFirstInSequence(pit, ownerParagraphs()))) {
 347                         x += font_metrics::signedWidth(layout->leftmargin,
 348                                                   labelfont);
 349                 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
 350                            && layout->labeltype != LABEL_BIBLIO
 351                            && layout->labeltype !=
 352                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 353                         x += font_metrics::signedWidth(layout->labelindent,
 354                                                   labelfont);
 355                         x += font_metrics::width(layout->labelsep, labelfont);
 356                         x += font_metrics::width(pit->getLabelstring(),
 357                                             labelfont);
 358                 }
 359                 break;
 360
 361         case MARGIN_RIGHT_ADDRESS_BOX:
 362         {
 363                 // ok, a terrible hack. The left margin depends on the widest
 364                 // row in this paragraph.
 365                 RowList::iterator rit = pit->rows.begin();
 366                 RowList::iterator end = pit->rows.end();
 367                 int minfill = rit->fill();
 368                 for ( ; rit != end; ++rit)
 369                         if (rit->fill() < minfill)
 370                                 minfill = rit->fill();
 371
 372                 x += font_metrics::signedWidth(layout->leftmargin,
 373                         tclass.defaultfont());
 374                 x += minfill;
 375         }
 376         break;
 377         }
 378
 379         if (workWidth() > 0 && !pit->params().leftIndent().zero()) {
 380                 LyXLength const len = pit->params().leftIndent();
 381                 int const tw = inset_owner ?
 382                         inset_owner->latexTextWidth(bv()) : workWidth();
 383                 x += len.inPixels(tw);
 384         }
 385
 386         LyXAlignment align;
 387
 388         if (pit->params().align() == LYX_ALIGN_LAYOUT)
 389                 align = layout->align;
 390         else
 391                 align = pit->params().align();
 392
 393         // set the correct parindent
 394         if (row.pos() == 0) {
 395                 if ((layout->labeltype == LABEL_NO_LABEL
 396                      || layout->labeltype == LABEL_TOP_ENVIRONMENT
 397                      || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 398                      || (layout->labeltype == LABEL_STATIC
 399                          && layout->latextype == LATEX_ENVIRONMENT
 400                          && !isFirstInSequence(pit, ownerParagraphs())))
 401                     && align == LYX_ALIGN_BLOCK
 402                     && !pit->params().noindent()
 403                         // in tabulars and ert paragraphs are never indented!
 404                         && (!pit->inInset() || !pit->inInset()->owner() ||
 405                                 (pit->inInset()->owner()->lyxCode() != InsetOld::TABULAR_CODE &&
 406                                  pit->inInset()->owner()->lyxCode() != InsetOld::ERT_CODE))
 407                     && (pit->layout() != tclass.defaultLayout() ||
 408                         bv()->buffer()->params().paragraph_separation ==
 409                         BufferParams::PARSEP_INDENT)) {
 410                         x += font_metrics::signedWidth(parindent,
 411                                                   tclass.defaultfont());
 412                 } else if (layout->labeltype == LABEL_BIBLIO) {
 413                         // ale970405 Right width for bibitems
 414                         x += bibitemMaxWidth(bv(), tclass.defaultfont());
 415                 }
 416         }
 417
 418         return x;
 419 }
 420
 421
 422 int LyXText::rightMargin(Paragraph const & par,
 423         Buffer const & buf, Row const &) const
 424 {
 425         LyXTextClass const & tclass = buf.params().getLyXTextClass();
 426         LyXLayout_ptr const & layout = par.layout();
 427
 428         return PAPER_MARGIN
 429                 + font_metrics::signedWidth(tclass.rightmargin(),
 430                                        tclass.defaultfont())
 431                 + font_metrics::signedWidth(layout->rightmargin,
 432                                        tclass.defaultfont())
 433                 * 4 / (par.getDepth() + 4);
 434 }
 435
 436
 437 int LyXText::labelEnd(ParagraphList::iterator pit, Row const & row) const
 438 {
 439         if (pit->layout()->margintype == MARGIN_MANUAL) {
 440                 Row tmprow = row;
 441                 tmprow.pos(pit->size());
 442                 // return the beginning of the body
 443                 return leftMargin(pit, tmprow);
 444         }
 445
 446         // LabelEnd is only needed if the layout
 447         // fills a flushleft label.
 448         return 0;
 449 }
 450
 451
 452 namespace {
 453
 454 // this needs special handling - only newlines count as a break point
 455 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
 456 {
 457         for (; i < par.size(); ++i)
 458                 if (par.isNewline(i))
 459                         return i;
 460
 461         return par.size();
 462 }
 463
 464 };
 465
 466
 467 void LyXText::rowBreakPoint(ParagraphList::iterator pit, Row & row) const
 468 {
 469         // maximum pixel width of a row.
 470         int width = workWidth() - rightMargin(*pit, *bv()->buffer(), row);
 471
 472         // inset->textWidth() returns -1 via workWidth(),
 473         // but why ?
 474         if (width < 0) {
 475                 row.endpos(pit->size() + 1);
 476                 return;
 477         }
 478
 479         LyXLayout_ptr const & layout = pit->layout();
 480
 481         if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 482                 row.endpos(addressBreakPoint(row.pos(), *pit) + 1);
 483                 return;
 484         }
 485
 486         pos_type const pos = row.pos();
 487         pos_type const body_pos = pit->beginningOfBody();
 488         pos_type const last = pit->size();
 489         pos_type point = last;
 490
 491         if (pos == last) {
 492                 row.endpos(last + 1);
 493                 return;
 494         }
 495
 496         // Now we iterate through until we reach the right margin
 497         // or the end of the par, then choose the possible break
 498         // nearest that.
 499
 500         int const left = leftMargin(pit, row);
 501         int x = left;
 502
 503         // pixel width since last breakpoint
 504         int chunkwidth = 0;
 505
 506         pos_type i = pos;
 507
 508         // We re-use the font resolution for the entire font span when possible
 509         LyXFont font = getFont(pit, i);
 510         lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
 511
 512         for (; i < last; ++i) {
 513                 if (pit->isNewline(i)) {
 514                         point = i;
 515                         break;
 516                 }
 517                 // Break before...
 518                 if (i + 1 < last) {
 519                         InsetOld * in = pit->getInset(i + 1);
 520                         if (in && in->display()) {
 521                                 point = i;
 522                                 break;
 523                         }
 524                         // ...and after.
 525                         in = pit->getInset(i);
 526                         if (in && in->display()) {
 527                                 point = i;
 528                                 break;
 529                         }
 530                 }
 531
 532                 char const c = pit->getChar(i);
 533                 if (i > endPosOfFontSpan) {
 534                         font = getFont(pit, i);
 535                         endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
 536                 }
 537
 538                 int thiswidth;
 539
 540                 // add the auto-hfill from label end to the body
 541                 if (body_pos && i == body_pos) {
 542                         thiswidth = font_metrics::width(layout->labelsep, getLabelFont(pit));
 543                         if (pit->isLineSeparator(i - 1))
 544                                 thiswidth -= singleWidth(pit, i - 1);
 545                         int left_margin = labelEnd(pit, row);
 546                         if (thiswidth + x < left_margin)
 547                                 thiswidth = left_margin - x;
 548                         thiswidth += singleWidth(pit, i, c, font);
 549                 } else {
 550                         thiswidth = singleWidth(pit, i, c, font);
 551                 }
 552
 553                 x += thiswidth;
 554                 //lyxerr << "i: " << i << " x: " << x << " width: " << width << endl;
 555                 chunkwidth += thiswidth;
 556
 557                 // break before a character that will fall off
 558                 // the right of the row
 559                 if (x >= width) {
 560                         // if no break before, break here
 561                         if (point == last || chunkwidth >= width - left) {
 562                                 if (pos < i) {
 563                                         point = i - 1;
 564                                         // exit on last registered breakpoint:
 565                                         break;
 566                                 }
 567                         }
 568                         // emergency exit:
 569                         if (i + 1 < last)
 570                                 break;
 571                 }
 572
 573                 InsetOld * in = pit->getInset(i);
 574                 if (!in || in->isChar()) {
 575                         // some insets are line separators too
 576                         if (pit->isLineSeparator(i)) {
 577                                 // register breakpoint:
 578                                 point = i;
 579                                 chunkwidth = 0;
 580                         }
 581                 }
 582         }
 583
 584         if (point == last && x >= width) {
 585                 // didn't find one, break at the point we reached the edge
 586                 point = i;
 587         } else if (i == last && x < width) {
 588                 // found one, but we fell off the end of the par, so prefer
 589                 // that.
 590                 point = last;
 591         }
 592
 593         // manual labels cannot be broken in LaTeX. But we
 594         // want to make our on-screen rendering of footnotes
 595         // etc. still break
 596         if (body_pos && point < body_pos)
 597                 point = body_pos - 1;
 598
 599         row.endpos(point + 1);
 600 }
 601
 602
 603 // returns the minimum space a row needs on the screen in pixel
 604 void LyXText::fill(ParagraphList::iterator pit, Row & row, int paper_width) const
 605 {
 606         int w;
 607         // get the pure distance
 608         pos_type const last = lastPos(*pit, row);
 609
 610         LyXLayout_ptr const & layout = pit->layout();
 611
 612         // special handling of the right address boxes
 613         if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 614                 int const tmpfill = row.fill();
 615                 row.fill(0); // the minfill in leftMargin()
 616                 w = leftMargin(pit, row);
 617                 row.fill(tmpfill);
 618         } else {
 619                 w = leftMargin(pit, row);
 620         }
 621
 622         pos_type const body_pos = pit->beginningOfBody();
 623         pos_type i = row.pos();
 624
 625         if (! pit->empty() && i <= last) {
 626                 // We re-use the font resolution for the entire span when possible
 627                 LyXFont font = getFont(pit, i);
 628                 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
 629                 while (i <= last) {
 630                         if (body_pos > 0 && i == body_pos) {
 631                                 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
 632                                 if (pit->isLineSeparator(i - 1))
 633                                         w -= singleWidth(pit, i - 1);
 634                                 int left_margin = labelEnd(pit, row);
 635                                 if (w < left_margin)
 636                                         w = left_margin;
 637                         }
 638                         char const c = pit->getChar(i);
 639                         if (IsPrintable(c) && i > endPosOfFontSpan) {
 640                                 // We need to get the next font
 641                                 font = getFont(pit, i);
 642                                 endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
 643                         }
 644                         w += singleWidth(pit, i, c, font);
 645                         ++i;
 646                 }
 647         }
 648         if (body_pos > 0 && body_pos > last) {
 649                 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
 650                 if (last >= 0 && pit->isLineSeparator(last))
 651                         w -= singleWidth(pit, last);
 652                 int const left_margin = labelEnd(pit, row);
 653                 if (w < left_margin)
 654                         w = left_margin;
 655         }
 656
 657         int const fill = paper_width - w - rightMargin(*pit, *bv()->buffer(), row);
 658         row.fill(fill);
 659         row.width(paper_width - fill);
 660 }
 661
 662
 663 // returns the minimum space a manual label needs on the screen in pixel
 664 int LyXText::labelFill(ParagraphList::iterator pit, Row const & row) const
 665 {
 666         pos_type last = pit->beginningOfBody();
 667
 668         BOOST_ASSERT(last > 0);
 669
 670         // -1 because a label ends either with a space that is in the label,
 671         // or with the beginning of a footnote that is outside the label.
 672         --last;
 673
 674         // a separator at this end does not count
 675         if (pit->isLineSeparator(last))
 676                 --last;
 677
 678         int w = 0;
 679         pos_type i = row.pos();
 680         while (i <= last) {
 681                 w += singleWidth(pit, i);
 682                 ++i;
 683         }
 684
 685         int fill = 0;
 686         string const & labwidstr = pit->params().labelWidthString();
 687         if (!labwidstr.empty()) {
 688                 LyXFont const labfont = getLabelFont(pit);
 689                 int const labwidth = font_metrics::width(labwidstr, labfont);
 690                 fill = max(labwidth - w, 0);
 691         }
 692
 693         return fill;
 694 }
 695
 696
 697 LColor_color LyXText::backgroundColor() const
 698 {
 699         if (inset_owner)
 700                 return inset_owner->backgroundColor();
 701         else
 702                 return LColor::background;
 703 }
 704
 705
 706 void LyXText::setHeightOfRow(ParagraphList::iterator pit, Row & row)
 707 {
 708         // get the maximum ascent and the maximum descent
 709         double layoutasc = 0;
 710         double layoutdesc = 0;
 711         double tmptop = 0;
 712
 713         // ok, let us initialize the maxasc and maxdesc value.
 714         // Only the fontsize count. The other properties
 715         // are taken from the layoutfont. Nicer on the screen :)
 716         LyXLayout_ptr const & layout = pit->layout();
 717
 718         // as max get the first character of this row then it can increase but not
 719         // decrease the height. Just some point to start with so we don't have to
 720         // do the assignment below too often.
 721         LyXFont font = getFont(pit, row.pos());
 722         LyXFont::FONT_SIZE const tmpsize = font.size();
 723         font = getLayoutFont(pit);
 724         LyXFont::FONT_SIZE const size = font.size();
 725         font.setSize(tmpsize);
 726
 727         LyXFont labelfont = getLabelFont(pit);
 728
 729         double spacing_val = 1.0;
 730         if (!pit->params().spacing().isDefault())
 731                 spacing_val = pit->params().spacing().getValue();
 732         else
 733                 spacing_val = bv()->buffer()->params().spacing().getValue();
 734         //lyxerr << "spacing_val = " << spacing_val << endl;
 735
 736         int maxasc  = int(font_metrics::maxAscent(font) *
 737                           layout->spacing.getValue() * spacing_val);
 738         int maxdesc = int(font_metrics::maxDescent(font) *
 739                           layout->spacing.getValue() * spacing_val);
 740
 741         pos_type const pos_end = lastPos(*pit, row);
 742         int labeladdon = 0;
 743         int maxwidth = 0;
 744
 745         if (!pit->empty()) {
 746                 // We re-use the font resolution for the entire font span when possible
 747                 LyXFont font = getFont(pit, row.pos());
 748                 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(row.pos());
 749
 750                 // Optimisation
 751                 Paragraph const & par = *pit;
 752
 753                 // Check if any insets are larger
 754                 for (pos_type pos = row.pos(); pos <= pos_end; ++pos) {
 755                         // Manual inlined optimised version of common case of
 756                         // "maxwidth += singleWidth(pit, pos);"
 757                         char const c = par.getChar(pos);
 758
 759                         if (IsPrintable(c)) {
 760                                 if (pos > endPosOfFontSpan) {
 761                                         // We need to get the next font
 762                                         font = getFont(pit, pos);
 763                                         endPosOfFontSpan = par.getEndPosOfFontSpan(pos);
 764                                 }
 765                                 if (! font.language()->RightToLeft()) {
 766                                         maxwidth += font_metrics::width(c, font);
 767                                 } else {
 768                                         // Fall-back to normal case
 769                                         maxwidth += singleWidth(pit, pos, c, font);
 770                                         // And flush font cache
 771                                         endPosOfFontSpan = 0;
 772                                 }
 773                         } else {
 774                                 // Special handling of insets - are any larger?
 775                                 if (par.isInset(pos)) {
 776                                         InsetOld const * tmpinset = par.getInset(pos);
 777                                         if (tmpinset) {
 778                                                 maxwidth += tmpinset->width();
 779                                                 maxasc = max(maxasc, tmpinset->ascent());
 780                                                 maxdesc = max(maxdesc, tmpinset->descent());
 781                                         }
 782                                 } else {
 783                                         // Fall-back to normal case
 784                                         maxwidth += singleWidth(pit, pos, c, font);
 785                                         // And flush font cache
 786                                         endPosOfFontSpan = 0;
 787                                 }
 788                         }
 789                 }
 790         }
 791
 792         // Check if any custom fonts are larger (Asger)
 793         // This is not completely correct, but we can live with the small,
 794         // cosmetic error for now.
 795         LyXFont::FONT_SIZE maxsize =
 796                 pit->highestFontInRange(row.pos(), pos_end, size);
 797         if (maxsize > font.size()) {
 798                 font.setSize(maxsize);
 799                 maxasc = max(maxasc, font_metrics::maxAscent(font));
 800                 maxdesc = max(maxdesc, font_metrics::maxDescent(font));
 801         }
 802
 803         // This is nicer with box insets:
 804         ++maxasc;
 805         ++maxdesc;
 806
 807         row.ascent_of_text(maxasc);
 808
 809         // is it a top line?
 810         if (!row.pos()) {
 811                 BufferParams const & bufparams = bv()->buffer()->params();
 812                 // some parksips VERY EASY IMPLEMENTATION
 813                 if (bv()->buffer()->params().paragraph_separation ==
 814                         BufferParams::PARSEP_SKIP)
 815                 {
 816                         if (layout->isParagraph()
 817                                 && pit->getDepth() == 0
 818                                 && pit != ownerParagraphs().begin())
 819                         {
 820                                 maxasc += bufparams.getDefSkip().inPixels(*bv());
 821                         } else if (pit != ownerParagraphs().begin() &&
 822                                    boost::prior(pit)->layout()->isParagraph() &&
 823                                    boost::prior(pit)->getDepth() == 0)
 824                         {
 825                                 // is it right to use defskip here too? (AS)
 826                                 maxasc += bufparams.getDefSkip().inPixels(*bv());
 827                         }
 828                 }
 829
 830                 // the top margin
 831                 if (pit == ownerParagraphs().begin() && !isInInset())
 832                         maxasc += PAPER_MARGIN;
 833
 834                 // add the vertical spaces, that the user added
 835                 maxasc += getLengthMarkerHeight(*bv(), pit->params().spaceTop());
 836
 837                 // do not forget the DTP-lines!
 838                 // there height depends on the font of the nearest character
 839                 if (pit->params().lineTop())
 840
 841                         maxasc += 2 * font_metrics::ascent('x', getFont(pit, 0));
 842                 // and now the pagebreaks
 843                 if (pit->params().pagebreakTop())
 844                         maxasc += 3 * defaultRowHeight();
 845
 846                 if (pit->params().startOfAppendix())
 847                         maxasc += 3 * defaultRowHeight();
 848
 849                 // This is special code for the chapter, since the label of this
 850                 // layout is printed in an extra row
 851                 if (layout->counter == "chapter" && bufparams.secnumdepth >= 0) {
 852                         float spacing_val = 1.0;
 853                         if (!pit->params().spacing().isDefault()) {
 854                                 spacing_val = pit->params().spacing().getValue();
 855                         } else {
 856                                 spacing_val = bufparams.spacing().getValue();
 857                         }
 858
 859                         labeladdon = int(font_metrics::maxDescent(labelfont) *
 860                                          layout->spacing.getValue() *
 861                                          spacing_val)
 862                                 + int(font_metrics::maxAscent(labelfont) *
 863                                       layout->spacing.getValue() *
 864                                       spacing_val);
 865                 }
 866
 867                 // special code for the top label
 868                 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
 869                      || layout->labeltype == LABEL_BIBLIO
 870                      || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
 871                     && isFirstInSequence(pit, ownerParagraphs())
 872                     && !pit->getLabelstring().empty())
 873                 {
 874                         float spacing_val = 1.0;
 875                         if (!pit->params().spacing().isDefault()) {
 876                                 spacing_val = pit->params().spacing().getValue();
 877                         } else {
 878                                 spacing_val = bufparams.spacing().getValue();
 879                         }
 880
 881                         labeladdon = int(
 882                                 (font_metrics::maxAscent(labelfont) +
 883                                  font_metrics::maxDescent(labelfont)) *
 884                                   layout->spacing.getValue() *
 885                                   spacing_val
 886                                 + layout->topsep * defaultRowHeight()
 887                                 + layout->labelbottomsep * defaultRowHeight());
 888                 }
 889
 890                 // And now the layout spaces, for example before and after
 891                 // a section, or between the items of a itemize or enumerate
 892                 // environment.
 893
 894                 if (!pit->params().pagebreakTop()) {
 895                         ParagraphList::iterator prev =
 896                                 depthHook(pit, ownerParagraphs(),
 897                                           pit->getDepth());
 898                         if (prev != pit && prev->layout() == layout &&
 899                                 prev->getDepth() == pit->getDepth() &&
 900                                 prev->getLabelWidthString() == pit->getLabelWidthString())
 901                         {
 902                                 layoutasc = (layout->itemsep * defaultRowHeight());
 903                         } else if (pit != ownerParagraphs().begin() || row.pos() != 0) {
 904                                 tmptop = layout->topsep;
 905
 906                                 if (tmptop > 0)
 907                                         layoutasc = (tmptop * defaultRowHeight());
 908                         } else if (pit->params().lineTop()) {
 909                                 tmptop = layout->topsep;
 910
 911                                 if (tmptop > 0)
 912                                         layoutasc = (tmptop * defaultRowHeight());
 913                         }
 914
 915                         prev = outerHook(pit, ownerParagraphs());
 916                         if (prev != ownerParagraphs().end())  {
 917                                 maxasc += int(prev->layout()->parsep * defaultRowHeight());
 918                         } else if (pit != ownerParagraphs().begin()) {
 919                                 ParagraphList::iterator prior_pit = boost::prior(pit);
 920                                 if (prior_pit->getDepth() != 0 ||
 921                                     prior_pit->layout() == layout) {
 922                                         maxasc += int(layout->parsep * defaultRowHeight());
 923                                 }
 924                         }
 925                 }
 926         }
 927
 928         // is it a bottom line?
 929         if (row.endpos() >= pit->size()) {
 930                 // the bottom margin
 931                 ParagraphList::iterator nextpit = boost::next(pit);
 932                 if (nextpit == ownerParagraphs().end() && !isInInset())
 933                         maxdesc += PAPER_MARGIN;
 934
 935                 // add the vertical spaces, that the user added
 936                 maxdesc += getLengthMarkerHeight(*bv(), pit->params().spaceBottom());
 937
 938                 // do not forget the DTP-lines!
 939                 // there height depends on the font of the nearest character
 940                 if (pit->params().lineBottom())
 941                         maxdesc += 2 * font_metrics::ascent('x',
 942                                         getFont(pit, max(pos_type(0), pit->size() - 1)));
 943
 944                 // and now the pagebreaks
 945                 if (pit->params().pagebreakBottom())
 946                         maxdesc += 3 * defaultRowHeight();
 947
 948                 // and now the layout spaces, for example before and after
 949                 // a section, or between the items of a itemize or enumerate
 950                 // environment
 951                 if (!pit->params().pagebreakBottom()
 952                     && nextpit != ownerParagraphs().end()) {
 953                         ParagraphList::iterator comparepit = pit;
 954                         float usual = 0;
 955                         float unusual = 0;
 956
 957                         if (comparepit->getDepth() > nextpit->getDepth()) {
 958                                 usual = (comparepit->layout()->bottomsep * defaultRowHeight());
 959                                 comparepit = depthHook(comparepit, ownerParagraphs(), nextpit->getDepth());
 960                                 if (comparepit->layout()!= nextpit->layout()
 961                                         || nextpit->getLabelWidthString() !=
 962                                         comparepit->getLabelWidthString())
 963                                 {
 964                                         unusual = (comparepit->layout()->bottomsep * defaultRowHeight());
 965                                 }
 966                                 if (unusual > usual)
 967                                         layoutdesc = unusual;
 968                                 else
 969                                         layoutdesc = usual;
 970                         } else if (comparepit->getDepth() ==  nextpit->getDepth()) {
 971
 972                                 if (comparepit->layout() != nextpit->layout()
 973                                         || nextpit->getLabelWidthString() !=
 974                                         comparepit->getLabelWidthString())
 975                                         layoutdesc = int(comparepit->layout()->bottomsep * defaultRowHeight());
 976                         }
 977                 }
 978         }
 979
 980         // incalculate the layout spaces
 981         maxasc += int(layoutasc * 2 / (2 + pit->getDepth()));
 982         maxdesc += int(layoutdesc * 2 / (2 + pit->getDepth()));
 983
 984         row.height(maxasc + maxdesc + labeladdon);
 985         row.baseline(maxasc + labeladdon);
 986         row.top_of_text(row.baseline() - font_metrics::maxAscent(font));
 987
 988         row.width(maxwidth);
 989
 990         if (inset_owner)
 991                 width = max(workWidth(), int(maxParagraphWidth(ownerParagraphs())));
 992 }
 993
 994
 995 void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
 996 {
 997         // allow only if at start or end, or all previous is new text
 998         if (cursor.pos() && cursor.pos() != cursorPar()->size()
 999             && cursorPar()->isChangeEdited(0, cursor.pos()))
1000                 return;
1001
1002         LyXTextClass const & tclass =
1003                 bv()->buffer()->params().getLyXTextClass();
1004         LyXLayout_ptr const & layout = cursorPar()->layout();
1005
1006         // this is only allowed, if the current paragraph is not empty or caption
1007         // and if it has not the keepempty flag active
1008         if (cursorPar()->empty() && !cursorPar()->allowEmpty()
1009            && layout->labeltype != LABEL_SENSITIVE)
1010                 return;
1011
1012         recUndo(cursor.par());
1013
1014         // Always break behind a space
1015         //
1016         // It is better to erase the space (Dekel)
1017         if (cursor.pos() < cursorPar()->size()
1018              && cursorPar()->isLineSeparator(cursor.pos()))
1019            cursorPar()->erase(cursor.pos());
1020
1021         // break the paragraph
1022         if (keep_layout)
1023                 keep_layout = 2;
1024         else
1025                 keep_layout = layout->isEnvironment();
1026
1027         // we need to set this before we insert the paragraph. IMO the
1028         // breakParagraph call should return a bool if it inserts the
1029         // paragraph before or behind and we should react on that one
1030         // but we can fix this in 1.3.0 (Jug 20020509)
1031         bool const isempty = (cursorPar()->allowEmpty() && cursorPar()->empty());
1032         ::breakParagraph(bv()->buffer()->params(), paragraphs, cursorPar(),
1033                          cursor.pos(), keep_layout);
1034
1035 #warning Trouble Point! (Lgb)
1036         // When ::breakParagraph is called from within an inset we must
1037         // ensure that the correct ParagraphList is used. Today that is not
1038         // the case and the Buffer::paragraphs is used. Not good. (Lgb)
1039         ParagraphList::iterator next_par = boost::next(cursorPar());
1040
1041         // well this is the caption hack since one caption is really enough
1042         if (layout->labeltype == LABEL_SENSITIVE) {
1043                 if (!cursor.pos())
1044                         // set to standard-layout
1045                         cursorPar()->applyLayout(tclass.defaultLayout());
1046                 else
1047                         // set to standard-layout
1048                         next_par->applyLayout(tclass.defaultLayout());
1049         }
1050
1051         // if the cursor is at the beginning of a row without prior newline,
1052         // move one row up!
1053         // This touches only the screen-update. Otherwise we would may have
1054         // an empty row on the screen
1055         if (cursor.pos() && cursorRow()->pos() == cursor.pos()
1056             && !cursorPar()->isNewline(cursor.pos() - 1))
1057         {
1058                 cursorLeft(bv());
1059         }
1060
1061         while (!next_par->empty() && next_par->isNewline(0))
1062                 next_par->erase(0);
1063
1064         updateCounters();
1065         redoParagraph(cursorPar());
1066         redoParagraph(next_par);
1067
1068         // This check is necessary. Otherwise the new empty paragraph will
1069         // be deleted automatically. And it is more friendly for the user!
1070         if (cursor.pos() || isempty)
1071                 setCursor(next_par, 0);
1072         else
1073                 setCursor(cursorPar(), 0);
1074 }
1075
1076
1077 // convenience function
1078 void LyXText::redoParagraph()
1079 {
1080         clearSelection();
1081         redoParagraph(cursorPar());
1082         setCursorIntern(cursor.par(), cursor.pos());
1083 }
1084
1085
1086 // insert a character, moves all the following breaks in the
1087 // same Paragraph one to the right and make a rebreak
1088 void LyXText::insertChar(char c)
1089 {
1090         recordUndo(Undo::INSERT, this, cursor.par(), cursor.par());
1091
1092         // When the free-spacing option is set for the current layout,
1093         // disable the double-space checking
1094
1095         bool const freeSpacing = cursorPar()->layout()->free_spacing ||
1096                 cursorPar()->isFreeSpacing();
1097
1098         if (lyxrc.auto_number) {
1099                 static string const number_operators = "+-/*";
1100                 static string const number_unary_operators = "+-";
1101                 static string const number_seperators = ".,:";
1102
1103                 if (current_font.number() == LyXFont::ON) {
1104                         if (!IsDigit(c) && !contains(number_operators, c) &&
1105                             !(contains(number_seperators, c) &&
1106                               cursor.pos() >= 1 &&
1107                               cursor.pos() < cursorPar()->size() &&
1108                               getFont(cursorPar(), cursor.pos()).number() == LyXFont::ON &&
1109                               getFont(cursorPar(), cursor.pos() - 1).number() == LyXFont::ON)
1110                            )
1111                                 number(bv()); // Set current_font.number to OFF
1112                 } else if (IsDigit(c) &&
1113                            real_current_font.isVisibleRightToLeft()) {
1114                         number(bv()); // Set current_font.number to ON
1115
1116                         if (cursor.pos() > 0) {
1117                                 char const c = cursorPar()->getChar(cursor.pos() - 1);
1118                                 if (contains(number_unary_operators, c) &&
1119                                     (cursor.pos() == 1 ||
1120                                      cursorPar()->isSeparator(cursor.pos() - 2) ||
1121                                      cursorPar()->isNewline(cursor.pos() - 2))
1122                                   ) {
1123                                         setCharFont(
1124                                                     cursorPar(),
1125                                                     cursor.pos() - 1,
1126                                                     current_font);
1127                                 } else if (contains(number_seperators, c) &&
1128                                            cursor.pos() >= 2 &&
1129                                            getFont(
1130                                                    cursorPar(),
1131                                                    cursor.pos() - 2).number() == LyXFont::ON) {
1132                                         setCharFont(
1133                                                     cursorPar(),
1134                                                     cursor.pos() - 1,
1135                                                     current_font);
1136                                 }
1137                         }
1138                 }
1139         }
1140
1141
1142         // First check, if there will be two blanks together or a blank at
1143         // the beginning of a paragraph.
1144         // I decided to handle blanks like normal characters, the main
1145         // difference are the special checks when calculating the row.fill
1146         // (blank does not count at the end of a row) and the check here
1147
1148         // The bug is triggered when we type in a description environment:
1149         // The current_font is not changed when we go from label to main text
1150         // and it should (along with realtmpfont) when we type the space.
1151         // CHECK There is a bug here! (Asger)
1152
1153         // store the current font.  This is because of the use of cursor
1154         // movements. The moving cursor would refresh the current font
1155         LyXFont realtmpfont = real_current_font;
1156         LyXFont rawtmpfont = current_font;
1157
1158         if (!freeSpacing && IsLineSeparatorChar(c)) {
1159                 if ((cursor.pos() > 0
1160                      && cursorPar()->isLineSeparator(cursor.pos() - 1))
1161                     || (cursor.pos() > 0
1162                         && cursorPar()->isNewline(cursor.pos() - 1))
1163                     || (cursor.pos() == 0)) {
1164                         static bool sent_space_message = false;
1165                         if (!sent_space_message) {
1166                                 if (cursor.pos() == 0)
1167                                         bv()->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
1168                                 else
1169                                         bv()->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
1170                                 sent_space_message = true;
1171                         }
1172                         charInserted();
1173                         return;
1174                 }
1175         }
1176
1177         // Here case LyXText::InsertInset already inserted the character
1178         if (c != Paragraph::META_INSET)
1179                 cursorPar()->insertChar(cursor.pos(), c);
1180
1181         setCharFont(cursorPar(), cursor.pos(), rawtmpfont);
1182
1183         current_font = rawtmpfont;
1184         real_current_font = realtmpfont;
1185         redoParagraph(cursorPar());
1186         setCursor(cursor.par(), cursor.pos() + 1, false, cursor.boundary());
1187
1188         charInserted();
1189 }
1190
1191
1192 void LyXText::charInserted()
1193 {
1194         // Here we could call finishUndo for every 20 characters inserted.
1195         // This is from my experience how emacs does it. (Lgb)
1196         static unsigned int counter;
1197         if (counter < 20) {
1198                 ++counter;
1199         } else {
1200                 finishUndo();
1201                 counter = 0;
1202         }
1203 }
1204
1205
1206 void LyXText::prepareToPrint(ParagraphList::iterator pit, Row & row) const
1207 {
1208         double w = row.fill();
1209         double fill_hfill = 0;
1210         double fill_label_hfill = 0;
1211         double fill_separator = 0;
1212         double x = 0;
1213
1214         bool const is_rtl =
1215                 pit->isRightToLeftPar(bv()->buffer()->params());
1216         if (is_rtl)
1217                 x = workWidth() > 0 ? rightMargin(*pit, *bv()->buffer(), row) : 0;
1218         else
1219                 x = workWidth() > 0 ? leftMargin(pit, row) : 0;
1220
1221         // is there a manual margin with a manual label
1222         LyXLayout_ptr const & layout = pit->layout();
1223
1224         if (layout->margintype == MARGIN_MANUAL
1225             && layout->labeltype == LABEL_MANUAL) {
1226                 /// We might have real hfills in the label part
1227                 int nlh = numberOfLabelHfills(*pit, row);
1228
1229                 // A manual label par (e.g. List) has an auto-hfill
1230                 // between the label text and the body of the
1231                 // paragraph too.
1232                 // But we don't want to do this auto hfill if the par
1233                 // is empty.
1234                 if (!pit->empty())
1235                         ++nlh;
1236
1237                 if (nlh && !pit->getLabelWidthString().empty()) {
1238                         fill_label_hfill = labelFill(pit, row) / double(nlh);
1239                 }
1240         }
1241
1242         // are there any hfills in the row?
1243         int const nh = numberOfHfills(*pit, row);
1244
1245         if (nh) {
1246                 if (w > 0)
1247                         fill_hfill = w / nh;
1248         // we don't have to look at the alignment if it is ALIGN_LEFT and
1249         // if the row is already larger then the permitted width as then
1250         // we force the LEFT_ALIGN'edness!
1251         } else if (int(row.width()) < workWidth()) {
1252                 // is it block, flushleft or flushright?
1253                 // set x how you need it
1254                 int align;
1255                 if (pit->params().align() == LYX_ALIGN_LAYOUT) {
1256                         align = layout->align;
1257                 } else {
1258                         align = pit->params().align();
1259                 }
1260                 InsetOld * inset = 0;
1261                 // ERT insets should always be LEFT ALIGNED on screen
1262                 inset = pit->inInset();
1263                 if (inset && inset->owner() &&
1264                         inset->owner()->lyxCode() == InsetOld::ERT_CODE)
1265                 {
1266                         align = LYX_ALIGN_LEFT;
1267                 }
1268
1269                 // Display-style insets should always be on a centred row
1270                 // The test on pit->size() is to catch zero-size pars, which
1271                 // would trigger the assert in Paragraph::getInset().
1272                 //inset = pit->size() ? pit->getInset(row.pos()) : 0;
1273                 inset = pit->isInset(row.pos()) ? pit->getInset(row.pos()) : 0;
1274                 if (inset && inset->display()) {
1275                         align = LYX_ALIGN_CENTER;
1276                 }
1277
1278                 switch (align) {
1279             case LYX_ALIGN_BLOCK:
1280                 {
1281                         int const ns = numberOfSeparators(*pit, row);
1282                         bool disp_inset = false;
1283                         if (row.endpos() < pit->size()) {
1284                                 InsetOld * in = pit->getInset(row.endpos());
1285                                 if (in)
1286                                         disp_inset = in->display();
1287                         }
1288                         // If we have separators, this is not the last row of a
1289                         // par, does not end in newline, and is not row above a
1290                         // display inset... then stretch it
1291                         if (ns
1292                                 && row.endpos() < pit->size()
1293                                 && !pit->isNewline(row.endpos())
1294                                 && !disp_inset
1295                                 ) {
1296                                         fill_separator = w / ns;
1297                         } else if (is_rtl) {
1298                                 x += w;
1299                         }
1300                         break;
1301             }
1302             case LYX_ALIGN_RIGHT:
1303                         x += w;
1304                         break;
1305             case LYX_ALIGN_CENTER:
1306                         x += w / 2;
1307                         break;
1308                 }
1309         }
1310
1311         bidi.computeTables(*pit, *bv()->buffer(), row);
1312         if (is_rtl) {
1313                 pos_type body_pos = pit->beginningOfBody();
1314                 pos_type last = lastPos(*pit, row);
1315
1316                 if (body_pos > 0 &&
1317                                 (body_pos - 1 > last ||
1318                                  !pit->isLineSeparator(body_pos - 1))) {
1319                         x += font_metrics::width(layout->labelsep, getLabelFont(pit));
1320                         if (body_pos - 1 <= last)
1321                                 x += fill_label_hfill;
1322                 }
1323         }
1324
1325         row.fill_hfill(fill_hfill);
1326         row.fill_label_hfill(fill_label_hfill);
1327         row.fill_separator(fill_separator);
1328         row.x(x);
1329 }
1330
1331
1332 // important for the screen
1333
1334
1335 // the cursor set functions have a special mechanism. When they
1336 // realize, that you left an empty paragraph, they will delete it.
1337 // They also delete the corresponding row
1338
1339 void LyXText::cursorRightOneWord()
1340 {
1341         ::cursorRightOneWord(*this, cursor, ownerParagraphs());
1342         setCursor(cursorPar(), cursor.pos());
1343 }
1344
1345
1346 // Skip initial whitespace at end of word and move cursor to *start*
1347 // of prior word, not to end of next prior word.
1348 void LyXText::cursorLeftOneWord()
1349 {
1350         LyXCursor tmpcursor = cursor;
1351         ::cursorLeftOneWord(*this, tmpcursor, ownerParagraphs());
1352         setCursor(getPar(tmpcursor), tmpcursor.pos());
1353 }
1354
1355
1356 void LyXText::selectWord(word_location loc)
1357 {
1358         LyXCursor from = cursor;
1359         LyXCursor to = cursor;
1360         ::getWord(*this, from, to, loc, ownerParagraphs());
1361         if (cursor != from)
1362                 setCursor(from.par(), from.pos());
1363         if (to == from)
1364                 return;
1365         selection.cursor = cursor;
1366         setCursor(to.par(), to.pos());
1367         setSelection();
1368 }
1369
1370
1371 // Select the word currently under the cursor when no
1372 // selection is currently set
1373 bool LyXText::selectWordWhenUnderCursor(word_location loc)
1374 {
1375         if (!selection.set()) {
1376                 selectWord(loc);
1377                 return selection.set();
1378         }
1379         return false;
1380 }
1381
1382
1383 void LyXText::acceptChange()
1384 {
1385         if (!selection.set() && cursorPar()->size())
1386                 return;
1387
1388         if (selection.start.par() == selection.end.par()) {
1389                 LyXCursor & startc = selection.start;
1390                 LyXCursor & endc = selection.end;
1391                 recordUndo(Undo::INSERT, this, startc.par());
1392                 getPar(startc)->acceptChange(startc.pos(), endc.pos());
1393                 finishUndo();
1394                 clearSelection();
1395                 redoParagraph(getPar(startc));
1396                 setCursorIntern(startc.par(), 0);
1397         }
1398 #warning handle multi par selection
1399 }
1400
1401
1402 void LyXText::rejectChange()
1403 {
1404         if (!selection.set() && cursorPar()->size())
1405                 return;
1406
1407         if (selection.start.par() == selection.end.par()) {
1408                 LyXCursor & startc = selection.start;
1409                 LyXCursor & endc = selection.end;
1410                 recordUndo(Undo::INSERT, this, startc.par());
1411                 getPar(startc)->rejectChange(startc.pos(), endc.pos());
1412                 finishUndo();
1413                 clearSelection();
1414                 redoParagraph(getPar(startc));
1415                 setCursorIntern(startc.par(), 0);
1416         }
1417 #warning handle multi par selection
1418 }
1419
1420
1421 // This function is only used by the spellchecker for NextWord().
1422 // It doesn't handle LYX_ACCENTs and probably never will.
1423 WordLangTuple const LyXText::selectNextWordToSpellcheck(float & value)
1424 {
1425         if (the_locking_inset) {
1426                 WordLangTuple word =
1427                         the_locking_inset->selectNextWordToSpellcheck(bv(), value);
1428                 if (!word.word().empty()) {
1429                         value += float(cursor.y());
1430                         value /= float(height);
1431                         return word;
1432                 }
1433                 // we have to go on checking so move cursor to the next char
1434                 if (cursor.pos() == cursorPar()->size()) {
1435                         if (cursor.par() + 1 == int(ownerParagraphs().size()))
1436                                 return word;
1437                         cursor.par(cursor.par() + 1);
1438                         cursor.pos(0);
1439                 } else {
1440                         cursor.pos(cursor.pos() + 1);
1441                 }
1442         }
1443         int const tmppar = cursor.par();
1444
1445         // If this is not the very first word, skip rest of
1446         // current word because we are probably in the middle
1447         // of a word if there is text here.
1448         if (cursor.pos() || cursor.par() != 0) {
1449                 while (cursor.pos() < cursorPar()->size()
1450                        && cursorPar()->isLetter(cursor.pos()))
1451                         cursor.pos(cursor.pos() + 1);
1452         }
1453
1454         // Now, skip until we have real text (will jump paragraphs)
1455         while (true) {
1456                 ParagraphList::iterator cpit = cursorPar();
1457                 pos_type const cpos = cursor.pos();
1458
1459                 if (cpos == cpit->size()) {
1460                         if (cursor.par() + 1 != int(ownerParagraphs().size())) {
1461                                 cursor.par(cursor.par() + 1);
1462                                 cursor.pos(0);
1463                                 continue;
1464                         }
1465                         break;
1466                 }
1467
1468                 bool const is_good_inset = cpit->isInset(cpos)
1469                         && cpit->getInset(cpos)->allowSpellcheck();
1470
1471                 if (!isDeletedText(*cpit, cpos)
1472                     && (is_good_inset || cpit->isLetter(cpos)))
1473                         break;
1474
1475                 cursor.pos(cpos + 1);
1476         }
1477
1478         // now check if we hit an inset so it has to be a inset containing text!
1479         if (cursor.pos() < cursorPar()->size() &&
1480             cursorPar()->isInset(cursor.pos())) {
1481                 // lock the inset!
1482                 FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
1483                 cursorPar()->getInset(cursor.pos())->dispatch(cmd);
1484                 // now call us again to do the above trick
1485                 // but obviously we have to start from down below ;)
1486                 return bv()->text->selectNextWordToSpellcheck(value);
1487         }
1488
1489         // Update the value if we changed paragraphs
1490         if (cursor.par() != tmppar) {
1491                 setCursor(cursor.par(), cursor.pos());
1492                 value = float(cursor.y())/float(height);
1493         }
1494
1495         // Start the selection from here
1496         selection.cursor = cursor;
1497
1498         string lang_code = getFont(cursorPar(), cursor.pos()).language()->code();
1499         // and find the end of the word (insets like optional hyphens
1500         // and ligature break are part of a word)
1501         while (cursor.pos() < cursorPar()->size()
1502                && cursorPar()->isLetter(cursor.pos())
1503                && !isDeletedText(*cursorPar(), cursor.pos()))
1504                 cursor.pos(cursor.pos() + 1);
1505
1506         // Finally, we copy the word to a string and return it
1507         string str;
1508         if (selection.cursor.pos() < cursor.pos()) {
1509                 for (pos_type i = selection.cursor.pos(); i < cursor.pos(); ++i) {
1510                         if (!cursorPar()->isInset(i))
1511                                 str += cursorPar()->getChar(i);
1512                 }
1513         }
1514         return WordLangTuple(str, lang_code);
1515 }
1516
1517
1518 // This one is also only for the spellchecker
1519 void LyXText::selectSelectedWord()
1520 {
1521         if (the_locking_inset) {
1522                 the_locking_inset->selectSelectedWord(bv());
1523                 return;
1524         }
1525         // move cursor to the beginning
1526         setCursor(selection.cursor.par(), selection.cursor.pos());
1527
1528         // set the sel cursor
1529         selection.cursor = cursor;
1530
1531         // now find the end of the word
1532         while (cursor.pos() < cursorPar()->size()
1533                && cursorPar()->isLetter(cursor.pos()))
1534                 cursor.pos(cursor.pos() + 1);
1535
1536         setCursor(cursorPar(), cursor.pos());
1537
1538         // finally set the selection
1539         setSelection();
1540 }
1541
1542
1543 // Delete from cursor up to the end of the current or next word.
1544 void LyXText::deleteWordForward()
1545 {
1546         if (cursorPar()->empty())
1547                 cursorRight(bv());
1548         else {
1549                 LyXCursor tmpcursor = cursor;
1550                 selection.set(true); // to avoid deletion
1551                 cursorRightOneWord();
1552                 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1553                 selection.cursor = cursor;
1554                 cursor = tmpcursor;
1555                 setSelection();
1556                 cutSelection(true, false);
1557         }
1558 }
1559
1560
1561 // Delete from cursor to start of current or prior word.
1562 void LyXText::deleteWordBackward()
1563 {
1564         if (cursorPar()->empty())
1565                 cursorLeft(bv());
1566         else {
1567                 LyXCursor tmpcursor = cursor;
1568                 selection.set(true); // to avoid deletion
1569                 cursorLeftOneWord();
1570                 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1571                 selection.cursor = cursor;
1572                 cursor = tmpcursor;
1573                 setSelection();
1574                 cutSelection(true, false);
1575         }
1576 }
1577
1578
1579 // Kill to end of line.
1580 void LyXText::deleteLineForward()
1581 {
1582         if (cursorPar()->empty())
1583                 // Paragraph is empty, so we just go to the right
1584                 cursorRight(bv());
1585         else {
1586                 LyXCursor tmpcursor = cursor;
1587                 // We can't store the row over a regular setCursor
1588                 // so we set it to 0 and reset it afterwards.
1589                 selection.set(true); // to avoid deletion
1590                 cursorEnd();
1591                 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1592                 selection.cursor = cursor;
1593                 cursor = tmpcursor;
1594                 setSelection();
1595                 // What is this test for ??? (JMarc)
1596                 if (!selection.set()) {
1597                         deleteWordForward();
1598                 } else {
1599                         cutSelection(true, false);
1600                 }
1601         }
1602 }
1603
1604
1605 void LyXText::changeCase(LyXText::TextCase action)
1606 {
1607         LyXCursor from;
1608         LyXCursor to;
1609
1610         if (selection.set()) {
1611                 from = selection.start;
1612                 to = selection.end;
1613         } else {
1614                 from = cursor;
1615                 ::getWord(*this, from, to, lyx::PARTIAL_WORD, ownerParagraphs());
1616                 setCursor(to.par(), to.pos() + 1);
1617         }
1618
1619         recordUndo(Undo::ATOMIC, this, from.par(), to.par());
1620
1621         pos_type pos = from.pos();
1622         int par = from.par();
1623
1624         while (par != int(ownerParagraphs().size()) &&
1625                (pos != to.pos() || par != to.par())) {
1626                 ParagraphList::iterator pit = getPar(par);
1627                 if (pos == pit->size()) {
1628                         ++par;
1629                         pos = 0;
1630                         continue;
1631                 }
1632                 unsigned char c = pit->getChar(pos);
1633                 if (c != Paragraph::META_INSET) {
1634                         switch (action) {
1635                         case text_lowercase:
1636                                 c = lowercase(c);
1637                                 break;
1638                         case text_capitalization:
1639                                 c = uppercase(c);
1640                                 action = text_lowercase;
1641                                 break;
1642                         case text_uppercase:
1643                                 c = uppercase(c);
1644                                 break;
1645                         }
1646                 }
1647 #warning changes
1648                 pit->setChar(pos, c);
1649                 ++pos;
1650         }
1651 }
1652
1653
1654 void LyXText::Delete()
1655 {
1656         // this is a very easy implementation
1657
1658         LyXCursor old_cursor = cursor;
1659         int const old_cur_par_id = cursorPar()->id();
1660         int const old_cur_par_prev_id =
1661                 old_cursor.par() ? getPar(old_cursor.par() - 1)->id() : -1;
1662
1663         // just move to the right
1664         cursorRight(bv());
1665
1666         // CHECK Look at the comment here.
1667         // This check is not very good...
1668         // The cursorRightIntern calls DeleteEmptyParagraphMechanism
1669         // and that can very well delete the par or par->previous in
1670         // old_cursor. Will a solution where we compare paragraph id's
1671         //work better?
1672         int iid = cursor.par() ? getPar(cursor.par() - 1)->id() : -1;
1673         if (iid == old_cur_par_prev_id && cursorPar()->id() != old_cur_par_id) {
1674                 // delete-empty-paragraph-mechanism has done it
1675                 return;
1676         }
1677
1678         // if you had success make a backspace
1679         if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
1680                 recordUndo(Undo::DELETE, this, old_cursor.par());
1681                 backspace();
1682         }
1683 }
1684
1685
1686 void LyXText::backspace()
1687 {
1688         // Get the font that is used to calculate the baselineskip
1689         ParagraphList::iterator pit = cursorPar();
1690         pos_type lastpos = pit->size();
1691
1692         if (cursor.pos() == 0) {
1693                 // The cursor is at the beginning of a paragraph,
1694                 // so the the backspace will collapse two paragraphs into one.
1695
1696                 // but it's not allowed unless it's new
1697                 if (pit->isChangeEdited(0, pit->size()))
1698                         return;
1699
1700                 // we may paste some paragraphs
1701
1702                 // is it an empty paragraph?
1703
1704                 if (lastpos == 0 || (lastpos == 1 && pit->isSeparator(0))) {
1705                         // This is an empty paragraph and we delete it just
1706                         // by moving the cursor one step
1707                         // left and let the DeleteEmptyParagraphMechanism
1708                         // handle the actual deletion of the paragraph.
1709
1710                         if (cursor.par()) {
1711                                 ParagraphList::iterator tmppit = getPar(cursor.par() - 1);
1712                                 if (cursorPar()->layout() == tmppit->layout()
1713                                     && cursorPar()->getAlign() == tmppit->getAlign()) {
1714                                         // Inherit bottom DTD from the paragraph below.
1715                                         // (the one we are deleting)
1716                                         tmppit->params().lineBottom(cursorPar()->params().lineBottom());
1717                                         tmppit->params().spaceBottom(cursorPar()->params().spaceBottom());
1718                                         tmppit->params().pagebreakBottom(cursorPar()->params().pagebreakBottom());
1719                                 }
1720
1721                                 cursorLeft(bv());
1722
1723                                 // the layout things can change the height of a row !
1724                                 redoParagraph();
1725                                 return;
1726                         }
1727                 }
1728
1729                 if (cursor.par() != 0)
1730                         recordUndo(Undo::DELETE, this, cursor.par() - 1, cursor.par());
1731
1732                 ParagraphList::iterator tmppit = cursorPar();
1733                 // We used to do cursorLeftIntern() here, but it is
1734                 // not a good idea since it triggers the auto-delete
1735                 // mechanism. So we do a cursorLeftIntern()-lite,
1736                 // without the dreaded mechanism. (JMarc)
1737                 if (cursor.par() != 0) {
1738                         // steps into the above paragraph.
1739                         setCursorIntern(cursor.par() - 1,
1740                                         getPar(cursor.par() - 1)->size(),
1741                                         false);
1742                 }
1743
1744                 // Pasting is not allowed, if the paragraphs have different
1745                 // layout. I think it is a real bug of all other
1746                 // word processors to allow it. It confuses the user.
1747                 // Correction: Pasting is always allowed with standard-layout
1748                 Buffer & buf = *bv()->buffer();
1749                 BufferParams const & bufparams = buf.params();
1750                 LyXTextClass const & tclass = bufparams.getLyXTextClass();
1751
1752                 if (cursorPar() != tmppit
1753                     && (cursorPar()->layout() == tmppit->layout()
1754                         || tmppit->layout() == tclass.defaultLayout())
1755                     && cursorPar()->getAlign() == tmppit->getAlign()) {
1756                         mergeParagraph(bufparams,
1757                                        buf.paragraphs(), cursorPar());
1758
1759                         if (cursor.pos() && cursorPar()->isSeparator(cursor.pos() - 1))
1760                                 cursor.pos(cursor.pos() - 1);
1761
1762                         // the row may have changed, block, hfills etc.
1763                         updateCounters();
1764                         setCursor(cursor.par(), cursor.pos(), false);
1765                 }
1766         } else {
1767                 // this is the code for a normal backspace, not pasting
1768                 // any paragraphs
1769                 recordUndo(Undo::DELETE, this, cursor.par());
1770                 // We used to do cursorLeftIntern() here, but it is
1771                 // not a good idea since it triggers the auto-delete
1772                 // mechanism. So we do a cursorLeftIntern()-lite,
1773                 // without the dreaded mechanism. (JMarc)
1774                 setCursorIntern(cursor.par(), cursor.pos() - 1,
1775                                 false, cursor.boundary());
1776                 cursorPar()->erase(cursor.pos());
1777         }
1778
1779         lastpos = cursorPar()->size();
1780         if (cursor.pos() == lastpos)
1781                 setCurrentFont();
1782
1783         redoParagraph();
1784         setCursor(cursor.par(), cursor.pos(), false, !cursor.boundary());
1785 }
1786
1787
1788 ParagraphList::iterator LyXText::cursorPar() const
1789 {
1790         return getPar(cursor.par());
1791 }
1792
1793
1794 ParagraphList::iterator LyXText::getPar(LyXCursor const & cur) const
1795 {
1796         return getPar(cur.par());
1797 }
1798
1799
1800 ParagraphList::iterator LyXText::getPar(int par) const
1801 {
1802         BOOST_ASSERT(par >= 0);
1803         BOOST_ASSERT(par < int(ownerParagraphs().size()));
1804         ParagraphList::iterator pit = ownerParagraphs().begin();
1805         std::advance(pit, par);
1806         return pit;
1807 }
1808
1809
1810
1811 RowList::iterator LyXText::cursorRow() const
1812 {
1813         return getRow(*cursorPar(), cursor.pos());
1814 }
1815
1816
1817 RowList::iterator LyXText::getRow(LyXCursor const & cur) const
1818 {
1819         return getRow(*getPar(cur), cur.pos());
1820 }
1821
1822
1823 RowList::iterator LyXText::getRow(Paragraph & par, pos_type pos) const
1824 {
1825         RowList::iterator rit = boost::prior(par.rows.end());
1826         RowList::iterator const begin = par.rows.begin();
1827
1828         while (rit != begin && rit->pos() > pos)
1829                 --rit;
1830
1831         return rit;
1832 }
1833
1834
1835 RowList::iterator
1836 LyXText::getRowNearY(int y, ParagraphList::iterator & pit) const
1837 {
1838         //lyxerr << "getRowNearY: y " << y << endl;
1839
1840         pit = boost::prior(ownerParagraphs().end());
1841
1842         RowList::iterator rit = lastRow();
1843         RowList::iterator rbegin = firstRow();
1844
1845         while (rit != rbegin && int(pit->y + rit->y_offset()) > y)
1846                 previousRow(pit, rit);
1847
1848         return rit;
1849 }
1850
1851
1852 int LyXText::getDepth() const
1853 {
1854         return cursorPar()->getDepth();
1855 }
1856
1857
1858 RowList::iterator LyXText::firstRow() const
1859 {
1860         return ownerParagraphs().front().rows.begin();
1861 }
1862
1863
1864 RowList::iterator LyXText::lastRow() const
1865 {
1866         return boost::prior(endRow());
1867 }
1868
1869
1870 RowList::iterator LyXText::endRow() const
1871 {
1872         return ownerParagraphs().back().rows.end();
1873 }
1874
1875
1876 void LyXText::nextRow(ParagraphList::iterator & pit,
1877         RowList::iterator & rit) const
1878 {
1879         ++rit;
1880         if (rit == pit->rows.end()) {
1881                 ++pit;
1882                 if (pit == ownerParagraphs().end())
1883                         --pit;
1884                 else
1885                         rit = pit->rows.begin();
1886         }
1887 }
1888
1889
1890 void LyXText::previousRow(ParagraphList::iterator & pit,
1891         RowList::iterator & rit) const
1892 {
1893         if (rit != pit->rows.begin())
1894                 --rit;
1895         else {
1896                 BOOST_ASSERT(pit != ownerParagraphs().begin());
1897                 --pit;
1898                 rit = boost::prior(pit->rows.end());
1899         }
1900 }
1901
1902
1903 string LyXText::selectionAsString(Buffer const & buffer, bool label) const
1904 {
1905         if (!selection.set())
1906                 return string();
1907
1908         // should be const ...
1909         ParagraphList::iterator startpit = getPar(selection.start);
1910         ParagraphList::iterator endpit = getPar(selection.end);
1911         size_t const startpos = selection.start.pos();
1912         size_t const endpos = selection.end.pos();
1913
1914         if (startpit == endpit)
1915                 return startpit->asString(buffer, startpos, endpos, label);
1916
1917         // First paragraph in selection
1918         string result =
1919                 startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
1920
1921         // The paragraphs in between (if any)
1922         ParagraphList::iterator pit = startpit;
1923         for (++pit; pit != endpit; ++pit)
1924                 result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
1925
1926         // Last paragraph in selection
1927         result += endpit->asString(buffer, 0, endpos, label);
1928
1929         return result;
1930 }
1931
1932
1933 int LyXText::parOffset(ParagraphList::iterator pit) const
1934 {
1935         return std::distance(ownerParagraphs().begin(), pit);
1936 }
1937
1938
1939 void LyXText::redoParagraphInternal(ParagraphList::iterator pit)
1940 {
1941         // remove rows of paragraph, keep track of height changes
1942         height -= pit->height;
1943
1944         // clear old data
1945         pit->rows.clear();
1946         pit->height = 0;
1947         pit->width = 0;
1948
1949         // redo insets
1950         InsetList::iterator ii = pit->insetlist.begin();
1951         InsetList::iterator iend = pit->insetlist.end();
1952         for (; ii != iend; ++ii) {
1953                 Dimension dim;
1954                 MetricsInfo mi(bv(), getFont(pit, ii->pos), workWidth());
1955                 ii->inset->metrics(mi, dim);
1956         }
1957
1958         // rebreak the paragraph
1959         int const ww = workWidth();
1960         for (pos_type z = 0; z < pit->size() + 1; ) {
1961                 Row row(z);
1962                 rowBreakPoint(pit, row);
1963                 z = row.endpos();
1964                 fill(pit, row, ww);
1965                 prepareToPrint(pit, row);
1966                 setHeightOfRow(pit, row);
1967                 row.y_offset(pit->height);
1968                 pit->rows.push_back(row);
1969                 pit->width = std::max(pit->width, row.width());
1970                 pit->height += row.height();
1971         }
1972         height += pit->height;
1973         //lyxerr << "redoParagraph: " << pit->rows.size() << " rows\n";
1974 }
1975
1976
1977 void LyXText::redoParagraphs(ParagraphList::iterator pit,
1978   ParagraphList::iterator end)
1979 {
1980         for ( ; pit != end; ++pit)
1981                 redoParagraphInternal(pit);
1982         updateRowPositions();
1983 }
1984
1985
1986 void LyXText::redoParagraph(ParagraphList::iterator pit)
1987 {
1988         redoParagraphInternal(pit);
1989         updateRowPositions();
1990 }
1991
1992
1993 void LyXText::fullRebreak()
1994 {
1995         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
1996         redoCursor();
1997         selection.cursor = cursor;
1998 }
1999
2000
2001 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
2002 {
2003         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth
2004         //      << " workWidth: " << workWidth() << "\nfont: " << mi.base.font << endl;
2005         //BOOST_ASSERT(mi.base.textwidth);
2006         //anchor_y_ = 0;
2007
2008         // rebuild row cache. This recomputes height as well.
2009         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
2010
2011         width = maxParagraphWidth(ownerParagraphs());
2012
2013         // final dimension
2014         dim.asc = firstRow()->ascent_of_text();
2015         dim.des = height - dim.asc;
2016         dim.wid = std::max(mi.base.textwidth, int(width));
2017 }
2018
2019
2020 bool LyXText::isLastRow(ParagraphList::iterator pit, Row const & row) const
2021 {
2022         return row.endpos() >= pit->size()
2023                && boost::next(pit) == ownerParagraphs().end();
2024 }
2025
2026
2027 bool LyXText::isFirstRow(ParagraphList::iterator pit, Row const & row) const
2028 {
2029         return row.pos() == 0 && pit == ownerParagraphs().begin();
2030 }