src/text.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "lyxtext.h"
  14 #include "lyxrow.h"
  15 #include "layout.h"
  16 #include "paragraph.h"
  17 #include "lyx_gui_misc.h"
  18 #include "gettext.h"
  19 #include "bufferparams.h"
  20 #include "buffer.h"
  21 #include "debug.h"
  22 #include "lyxrc.h"
  23 #include "LyXView.h"
  24 #include "Painter.h"
  25 #include "tracer.h"
  26 #include "font.h"
  27 #include "encoding.h"
  28 #include "lyxscreen.h"
  29 #include "bufferview_funcs.h"
  30 #include "BufferView.h"
  31 #include "language.h"
  32 #include "ParagraphParameters.h"
  33 #include "undo_funcs.h"
  34 #include "font.h"
  35
  36 #include "insets/insetbib.h"
  37 #include "insets/insettext.h"
  38
  39 #include "support/textutils.h"
  40 #include "support/LAssert.h"
  41 #include "support/lstrings.h"
  42
  43 #include <algorithm>
  44
  45 using std::max;
  46 using std::min;
  47 using std::endl;
  48 using std::pair;
  49 using lyx::pos_type;
  50
  51 namespace {
  52
  53 int const LYX_PAPER_MARGIN = 20;
  54
  55 } // namespace anon
  56
  57 extern int bibitemMaxWidth(BufferView *, LyXFont const &);
  58
  59
  60 int LyXText::workWidth(BufferView * bview) const
  61 {
  62         if (inset_owner) {
  63                 return inset_owner->textWidth(bview);
  64         }
  65         return bview->workWidth();
  66 }
  67
  68
  69 int LyXText::workWidth(BufferView * bview, Inset * inset) const
  70 {
  71         Paragraph * par = 0;
  72         pos_type pos = 0;
  73
  74         Buffer::inset_iterator it = bview->buffer()->inset_iterator_begin();
  75
  76         for (; it != bview->buffer()->inset_iterator_end(); ++it) {
  77                 if (*it == inset) {
  78                         par = it.getPar();
  79                         pos = it.getPos();
  80                         break;
  81                 }
  82         }
  83         if (!par) {
  84                 return workWidth(bview);
  85         }
  86
  87         LyXLayout const & layout =
  88                 textclasslist.Style(bview->buffer()->params.textclass,
  89                                     par->getLayout());
  90
  91         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
  92                 // Optimization here: in most cases, the real row is
  93                 // not needed, but only the par/pos values. So we just
  94                 // construct a dummy row for leftMargin. (JMarc)
  95                 Row dummyrow;
  96                 dummyrow.par(par);
  97                 dummyrow.pos(pos);
  98                 return workWidth(bview) - leftMargin(bview, &dummyrow);
  99         } else {
 100                 int dummy_y;
 101                 Row * row = getRow(par, pos, dummy_y);
 102                 Row * frow = row;
 103                 while (frow->previous() && frow->par() == frow->previous()->par())
 104                         frow = frow->previous();
 105                 unsigned int maxw = 0;
 106                 while (frow->next() && frow->par() == frow->next()->par()) {
 107                         if ((frow != row) && (maxw < frow->width()))
 108                                 maxw = frow->width();
 109                         frow = frow->next();
 110                 }
 111                 if (maxw)
 112                         return maxw;
 113         }
 114         return workWidth(bview);
 115 }
 116
 117
 118 int LyXText::getRealCursorX(BufferView * bview) const
 119 {
 120         int x = cursor.x();
 121         if (the_locking_inset && (the_locking_inset->getLyXText(bview)!=this))
 122                 x = the_locking_inset->getLyXText(bview)->getRealCursorX(bview);
 123         return x;
 124 }
 125
 126
 127 unsigned char LyXText::transformChar(unsigned char c, Paragraph * par,
 128                         pos_type pos) const
 129 {
 130         if (!Encodings::is_arabic(c))
 131                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isdigit(c))
 132                         return c + (0xb0 - '0');
 133                 else
 134                         return c;
 135
 136         unsigned char const prev_char = pos > 0 ? par->getChar(pos-1) : ' ';
 137         unsigned char next_char = ' ';
 138
 139         for (pos_type i = pos+1; i < par->size(); ++i)
 140                 if (!Encodings::IsComposeChar_arabic(par->getChar(i))) {
 141                         next_char = par->getChar(i);
 142                         break;
 143                 }
 144
 145         if (Encodings::is_arabic(next_char)) {
 146                 if (Encodings::is_arabic(prev_char))
 147                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
 148                 else
 149                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
 150         } else {
 151                 if (Encodings::is_arabic(prev_char))
 152                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
 153                 else
 154                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
 155         }
 156 }
 157
 158 // This is the comments that some of the warnings below refers to.
 159 // There are some issues in this file and I don't think they are
 160 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
 161 // this is a problem that has been here almost from day one and that a
 162 // larger userbase with differenct access patters triggers the bad
 163 // behaviour. (segfaults.) What I think happen is: In several places
 164 // we store the paragraph in the current cursor and then moves the
 165 // cursor. This movement of the cursor will delete paragraph at the
 166 // old position if it is now empty. This will make the temporary
 167 // pointer to the old cursor paragraph invalid and dangerous to use.
 168 // And is some cases this will trigger a segfault. I have marked some
 169 // of the cases where this happens with a warning, but I am sure there
 170 // are others in this file and in text2.C. There is also a note in
 171 // Delete() that you should read. In Delete I store the paragraph->id
 172 // instead of a pointer to the paragraph. I am pretty sure this faulty
 173 // use of temporary pointers to paragraphs that might have gotten
 174 // invalidated (through a cursor movement) before they are used, are
 175 // the cause of the strange crashes we get reported often.
 176 //
 177 // It is very tiresom to change this code, especially when it is as
 178 // hard to read as it is. Help to fix all the cases where this is done
 179 // would be greately appreciated.
 180 //
 181 // Lgb
 182
 183 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 184                          pos_type pos) const
 185 {
 186         char const c = par->getChar(pos);
 187         return singleWidth(bview, par, pos, c);
 188 }
 189
 190
 191 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 192                          pos_type pos, char c) const
 193 {
 194         LyXFont const font = getFont(bview->buffer(), par, pos);
 195
 196         // The most common case is handled first (Asger)
 197         if (IsPrintable(c)) {
 198                 if (font.language()->RightToLeft()) {
 199                         if (font.language()->lang() == "arabic" &&
 200                             (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 201                              lyxrc.font_norm_type == LyXRC::ISO_10646_1))
 202                                 if (Encodings::IsComposeChar_arabic(c))
 203                                         return 0;
 204                                 else
 205                                         c = transformChar(c, par, pos);
 206                         else if (font.language()->lang() == "hebrew" &&
 207                                  Encodings::IsComposeChar_hebrew(c))
 208                                 return 0;
 209                 }
 210                 return lyxfont::width(c, font);
 211
 212         } else if (IsHfillChar(c)) {
 213                 return 3;       /* Because of the representation
 214                                  * as vertical lines */
 215         } else if (c == Paragraph::META_INSET) {
 216                 Inset * tmpinset = par->getInset(pos);
 217                 if (tmpinset) {
 218 #if 1
 219                         // this IS needed otherwise on initialitation we don't get the fill
 220                         // of the row right (ONLY on initialization if we read a file!)
 221                         // should be changed! (Jug 20011204)
 222                         tmpinset->update(bview, font);
 223 #endif
 224                         return tmpinset->width(bview, font);
 225                 } else
 226                         return 0;
 227
 228         } else if (IsSeparatorChar(c))
 229                 c = ' ';
 230         else if (IsNewlineChar(c))
 231                 c = 'n';
 232         return lyxfont::width(c, font);
 233 }
 234
 235
 236 // Returns the paragraph position of the last character in the specified row
 237 pos_type LyXText::rowLast(Row const * row) const
 238 {
 239         if (!row->next() || row->next()->par() != row->par())
 240                 return row->par()->size() - 1;
 241         else
 242                 return row->next()->pos() - 1;
 243 }
 244
 245
 246 pos_type LyXText::rowLastPrintable(Row const * row) const
 247 {
 248         pos_type const last = rowLast(row);
 249         if (last >= row->pos()
 250             && row->next()
 251             && row->next()->par() == row->par()
 252             && row->par()->isSeparator(last))
 253                 return last - 1;
 254         else
 255                 return last;
 256 }
 257
 258
 259 void LyXText::computeBidiTables(Buffer const * buf, Row * row) const
 260 {
 261         bidi_same_direction = true;
 262         if (!lyxrc.rtl_support) {
 263                 bidi_start = -1;
 264                 return;
 265         }
 266
 267         bidi_start = row->pos();
 268         bidi_end = rowLastPrintable(row);
 269
 270         if (bidi_start > bidi_end) {
 271                 bidi_start = -1;
 272                 return;
 273         }
 274
 275         if (bidi_end + 2 - bidi_start >
 276             static_cast<pos_type>(log2vis_list.size())) {
 277                 pos_type new_size =
 278                         (bidi_end + 2 - bidi_start < 500) ?
 279                         500 : 2 * (bidi_end + 2 - bidi_start);
 280                 log2vis_list.resize(new_size);
 281                 vis2log_list.resize(new_size);
 282                 bidi_levels.resize(new_size);
 283         }
 284
 285         vis2log_list[bidi_end + 1 - bidi_start] = -1;
 286         log2vis_list[bidi_end + 1 - bidi_start] = -1;
 287
 288         pos_type stack[2];
 289         bool const rtl_par =
 290                 row->par()->getParLanguage(buf->params)->RightToLeft();
 291         int level = 0;
 292         bool rtl = false;
 293         bool rtl0 = false;
 294         pos_type const main_body = beginningOfMainBody(buf, row->par());
 295
 296         for (pos_type lpos = bidi_start;
 297              lpos <= bidi_end; ++lpos) {
 298                 bool is_space = row->par()->isLineSeparator(lpos);
 299                 pos_type const pos =
 300                         (is_space && lpos + 1 <= bidi_end &&
 301                          !row->par()->isLineSeparator(lpos + 1) &&
 302                          !row->par()->isNewline(lpos + 1))
 303                         ? lpos + 1 : lpos;
 304                 LyXFont font = row->par()->getFontSettings(buf->params, pos);
 305                 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
 306                     font.number() == LyXFont::ON &&
 307                     row->par()->getFontSettings(buf->params, lpos - 1).number()
 308                     == LyXFont::ON) {
 309                         font = row->par()->getFontSettings(buf->params, lpos);
 310                         is_space = false;
 311                 }
 312
 313
 314                 bool new_rtl = font.isVisibleRightToLeft();
 315                 bool new_rtl0 = font.isRightToLeft();
 316                 int new_level;
 317
 318                 if (lpos == main_body - 1
 319                     && row->pos() < main_body - 1
 320                     && is_space) {
 321                         new_level = (rtl_par) ? 1 : 0;
 322                         new_rtl = new_rtl0 = rtl_par;
 323                 } else if (new_rtl0)
 324                         new_level = (new_rtl) ? 1 : 2;
 325                 else
 326                         new_level = (rtl_par) ? 2 : 0;
 327
 328                 if (is_space && new_level >= level) {
 329                         new_level = level;
 330                         new_rtl = rtl;
 331                         new_rtl0 = rtl0;
 332                 }
 333
 334                 int new_level2 = new_level;
 335
 336                 if (level == new_level && rtl0 != new_rtl0) {
 337                         --new_level2;
 338                         log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
 339                 } else if (level < new_level) {
 340                         log2vis_list[lpos - bidi_start] =  (rtl) ? -1 : 1;
 341                         if (new_level > rtl_par)
 342                                 bidi_same_direction = false;
 343                 } else
 344                         log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
 345                 rtl = new_rtl;
 346                 rtl0 = new_rtl0;
 347                 bidi_levels[lpos - bidi_start] = new_level;
 348
 349                 while (level > new_level2) {
 350                         pos_type old_lpos = stack[--level];
 351                         int delta = lpos - old_lpos - 1;
 352                         if (level % 2)
 353                                 delta = -delta;
 354                         log2vis_list[lpos - bidi_start] += delta;
 355                         log2vis_list[old_lpos - bidi_start] += delta;
 356                 }
 357                 while (level < new_level)
 358                         stack[level++] = lpos;
 359         }
 360
 361         while (level > 0) {
 362                 pos_type const old_lpos = stack[--level];
 363                 int delta = bidi_end - old_lpos;
 364                 if (level % 2)
 365                         delta = -delta;
 366                 log2vis_list[old_lpos - bidi_start] += delta;
 367         }
 368
 369         pos_type vpos = bidi_start - 1;
 370         for (pos_type lpos = bidi_start;
 371              lpos <= bidi_end; ++lpos) {
 372                 vpos += log2vis_list[lpos - bidi_start];
 373                 vis2log_list[vpos - bidi_start] = lpos;
 374                 log2vis_list[lpos - bidi_start] = vpos;
 375         }
 376 }
 377
 378
 379 // This method requires a previous call to ComputeBidiTables()
 380 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 381                          pos_type pos) const
 382 {
 383         if (!lyxrc.rtl_support || pos == 0)
 384                 return false;
 385
 386         if (!bidi_InRange(pos - 1)) {
 387                 /// This can happen if pos is the first char of a row.
 388                 /// Returning false in this case is incorrect!
 389                 return false;
 390         }
 391
 392         bool const rtl = bidi_level(pos - 1) % 2;
 393         bool const rtl2 = bidi_InRange(pos)
 394                 ? bidi_level(pos) % 2
 395                 : par->isRightToLeftPar(buf->params);
 396         return rtl != rtl2;
 397 }
 398
 399
 400 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 401                          pos_type pos, LyXFont const & font) const
 402 {
 403         if (!lyxrc.rtl_support)
 404                 return false;    // This is just for speedup
 405
 406         bool const rtl = font.isVisibleRightToLeft();
 407         bool const rtl2 = bidi_InRange(pos)
 408                 ? bidi_level(pos) % 2
 409                 : par->isRightToLeftPar(buf->params);
 410         return rtl != rtl2;
 411 }
 412
 413 void LyXText::drawNewline(DrawRowParams & p, pos_type const pos)
 414 {
 415         // Draw end-of-line marker
 416         LyXFont const font = getFont(p.bv->buffer(), p.row->par(), pos);
 417         int const wid = lyxfont::width('n', font);
 418         int const asc = lyxfont::maxAscent(font);
 419         int const y = p.yo + p.row->baseline();
 420         int xp[3];
 421         int yp[3];
 422
 423         yp[0] = int(y - 0.875 * asc * 0.75);
 424         yp[1] = int(y - 0.500 * asc * 0.75);
 425         yp[2] = int(y - 0.125 * asc * 0.75);
 426
 427         if (bidi_level(pos) % 2 == 0) {
 428                 xp[0] = int(p.x + wid * 0.375);
 429                 xp[1] = int(p.x);
 430                 xp[2] = int(p.x + wid * 0.375);
 431         } else {
 432                 xp[0] = int(p.x + wid * 0.625);
 433                 xp[1] = int(p.x + wid);
 434                 xp[2] = int(p.x + wid * 0.625);
 435         }
 436
 437         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 438
 439         yp[0] = int(y - 0.500 * asc * 0.75);
 440         yp[1] = int(y - 0.500 * asc * 0.75);
 441         yp[2] = int(y - asc * 0.75);
 442
 443         if (bidi_level(pos) % 2 == 0) {
 444                 xp[0] = int(p.x);
 445                 xp[1] = int(p.x + wid);
 446                 xp[2] = int(p.x + wid);
 447         } else {
 448                 xp[0] = int(p.x + wid);
 449                 xp[1] = int(p.x);
 450                 xp[2] = int(p.x);
 451         }
 452
 453         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 454
 455         p.x += wid;
 456 }
 457
 458
 459 void LyXText::drawInset(DrawRowParams & p, pos_type const pos)
 460 {
 461         Inset * inset = p.row->par()->getInset(pos);
 462
 463         // FIXME: shouldn't happen
 464         if (!inset) {
 465                 return;
 466         }
 467
 468         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 469
 470         inset->update(p.bv, font, false);
 471         inset->draw(p.bv, font, p.yo + p.row->baseline(), p.x, p.cleared);
 472
 473         if (!need_break_row && !inset_owner
 474                 && p.bv->text->status() == CHANGED_IN_DRAW) {
 475                 Row * prev = p.row->previous();
 476                 if (prev && prev->par() == p.row->par()) {
 477                         breakAgainOneRow(p.bv, prev);
 478                 }
 479                 setCursor(p.bv, cursor.par(), cursor.pos());
 480                 need_break_row = p.row;
 481         }
 482 }
 483
 484
 485 void LyXText::drawForeignMark(DrawRowParams & p, float const orig_x, LyXFont const & orig_font)
 486 {
 487         if (!lyxrc.mark_foreign_language)
 488                 return;
 489         if (orig_font.language() == latex_language)
 490                 return;
 491         if (orig_font.language() == p.bv->buffer()->params.language)
 492                 return;
 493
 494         int const y = p.yo + p.row->height() - 1;
 495         p.pain->line(int(orig_x), y, int(p.x), y, LColor::language);
 496 }
 497
 498
 499 void LyXText::drawHebrewComposeChar(DrawRowParams & p, pos_type & vpos)
 500 {
 501         pos_type pos = vis2log(vpos);
 502
 503         string str;
 504
 505         // first char
 506         char c = p.row->par()->getChar(pos);
 507         str += c;
 508         ++vpos;
 509
 510         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 511         int const width = lyxfont::width(c, font);
 512         int dx = 0;
 513
 514         for (pos_type i = pos-1; i >= 0; --i) {
 515                 c = p.row->par()->getChar(i);
 516                 if (!Encodings::IsComposeChar_hebrew(c)) {
 517                         if (IsPrintableNonspace(c)) {
 518                                 int const width2 =
 519                                         singleWidth(p.bv, p.row->par(), i, c);
 520                                 // dalet / resh
 521                                 dx = (c == 'ø' || c == 'ã')
 522                                         ? width2 - width
 523                                         : (width2 - width) / 2;
 524                         }
 525                         break;
 526                 }
 527         }
 528
 529         // Draw nikud
 530         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 531 }
 532
 533
 534 void LyXText::drawArabicComposeChar(DrawRowParams & p, pos_type & vpos)
 535 {
 536         pos_type pos = vis2log(vpos);
 537         string str;
 538
 539         // first char
 540         char c = p.row->par()->getChar(pos);
 541         c = transformChar(c, p.row->par(), pos);
 542         str +=c;
 543         ++vpos;
 544
 545         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 546         int const width = lyxfont::width(c, font);
 547         int dx = 0;
 548
 549         for (pos_type i = pos-1; i >= 0; --i) {
 550                 c = p.row->par()->getChar(i);
 551                 if (!Encodings::IsComposeChar_arabic(c)) {
 552                         if (IsPrintableNonspace(c)) {
 553                                 int const width2 =
 554                                         singleWidth(p.bv, p.row->par(), i, c);
 555                                 dx = (width2 - width) / 2;
 556                         }
 557                         break;
 558                 }
 559         }
 560         // Draw nikud
 561         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 562 }
 563
 564
 565 void LyXText::drawChars(DrawRowParams & p, pos_type & vpos,
 566         bool hebrew, bool arabic)
 567 {
 568         pos_type pos = vis2log(vpos);
 569         pos_type const last = rowLastPrintable(p.row);
 570         LyXFont const & orig_font = getFont(p.bv->buffer(), p.row->par(), pos);
 571
 572         // first character
 573         string str;
 574         str += p.row->par()->getChar(pos);
 575         if (arabic) {
 576                 unsigned char c = str[0];
 577                 str[0] = transformChar(c, p.row->par(), pos);
 578         }
 579         ++vpos;
 580
 581         // collect as much similar chars as we can
 582         while (vpos <= last && (pos = vis2log(vpos)) >= 0) {
 583                 char c = p.row->par()->getChar(pos);
 584
 585                 if (!IsPrintableNonspace(c))
 586                         break;
 587
 588                 if (arabic && Encodings::IsComposeChar_arabic(c))
 589                         break;
 590                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 591                         break;
 592
 593                 if (orig_font != getFont(p.bv->buffer(), p.row->par(), pos))
 594                         break;
 595
 596                 str += c;
 597                 ++vpos;
 598         }
 599
 600         // Draw text and set the new x position
 601         p.pain->text(int(p.x), p.yo + p.row->baseline(), str, orig_font);
 602         p.x += lyxfont::width(str, orig_font);
 603 }
 604
 605
 606 void LyXText::draw(DrawRowParams & p, pos_type & vpos)
 607 {
 608         pos_type const pos = vis2log(vpos);
 609         Paragraph * par = p.row->par();
 610
 611         LyXFont const & orig_font = getFont(p.bv->buffer(), par, pos);
 612
 613         float const orig_x = p.x;
 614
 615         char const c = par->getChar(pos);
 616
 617         if (IsNewlineChar(c)) {
 618                 ++vpos;
 619                 drawNewline(p, pos);
 620                 return;
 621         } else if (IsInsetChar(c)) {
 622                 drawInset(p, pos);
 623                 ++vpos;
 624                 drawForeignMark(p, orig_x, orig_font);
 625                 return;
 626         }
 627
 628         // usual characters, no insets
 629
 630         // special case languages
 631         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 632         bool const arabic =
 633                 orig_font.language()->lang() == "arabic" &&
 634                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 635                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 636
 637         // draw as many chars as we can
 638         if ((!hebrew && !arabic)
 639                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 640                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 641                 drawChars(p, vpos, true, false);
 642         } else if (hebrew) {
 643                 drawHebrewComposeChar(p, vpos);
 644         } else if (arabic) {
 645                 drawArabicComposeChar(p, vpos);
 646         }
 647
 648         drawForeignMark(p, orig_x, orig_font);
 649
 650 #ifdef INHERIT_LANGUAGE
 651 #ifdef WITH_WARNINGS
 652         if ((font.language() == inherit_language) ||
 653                 (font.language() == ignore_language))
 654                 lyxerr << "No this shouldn't happen!\n";
 655 #endif
 656 #endif
 657 }
 658
 659
 660 // Returns the left beginning of the text.
 661 // This information cannot be taken from the layouts-objekt, because in
 662 // LaTeX the beginning of the text fits in some cases (for example sections)
 663 // exactly the label-width.
 664 int LyXText::leftMargin(BufferView * bview, Row const * row) const
 665 {
 666         LyXTextClass const & tclass =
 667                 textclasslist.TextClass(bview->buffer()->params.textclass);
 668         LyXLayout const & layout = tclass[row->par()->getLayout()];
 669
 670         string parindent = layout.parindent;
 671
 672         int x = LYX_PAPER_MARGIN;
 673
 674         x += lyxfont::signedWidth(tclass.leftmargin(), tclass.defaultfont());
 675
 676         // this is the way, LyX handles the LaTeX-Environments.
 677         // I have had this idea very late, so it seems to be a
 678         // later added hack and this is true
 679         if (!row->par()->getDepth()) {
 680                 if (!row->par()->getLayout()) {
 681                         // find the previous same level paragraph
 682                         if (row->par()->previous()) {
 683                                 Paragraph * newpar = row->par()
 684                                         ->depthHook(row->par()->getDepth());
 685                                 if (newpar &&
 686                                     tclass[newpar->getLayout()].nextnoindent)
 687                                         parindent.erase();
 688                         }
 689                 }
 690         } else {
 691                 // find the next level paragraph
 692
 693                 Paragraph * newpar =
 694                         row->par()->outerHook();
 695
 696                 // make a corresponding row. Needed to call LeftMargin()
 697
 698                 // check wether it is a sufficent paragraph
 699                 if (newpar && tclass[newpar->getLayout()].isEnvironment())
 700                 {
 701                         Row dummyrow;
 702                         dummyrow.par(newpar);
 703                         dummyrow.pos(newpar->size());
 704                         x = leftMargin(bview, &dummyrow);
 705                 } else {
 706                         // this is no longer an error, because this function
 707                         // is used to clear impossible depths after changing
 708                         // a layout. Since there is always a redo,
 709                         // LeftMargin() is always called
 710                         row->par()->params().depth(0);
 711                 }
 712
 713                 if (newpar && !row->par()->getLayout()) {
 714                         if (newpar->params().noindent())
 715                                 parindent.erase();
 716                         else
 717                                 parindent = tclass[newpar->getLayout()].parindent;
 718                 }
 719
 720         }
 721
 722         LyXFont const labelfont = getLabelFont(bview->buffer(), row->par());
 723         switch (layout.margintype) {
 724         case MARGIN_DYNAMIC:
 725                 if (!layout.leftmargin.empty()) {
 726                         x += lyxfont::signedWidth(layout.leftmargin,
 727                                                   tclass.defaultfont());
 728                 }
 729                 if (!row->par()->getLabelstring().empty()) {
 730                         x += lyxfont::signedWidth(layout.labelindent,
 731                                                   labelfont);
 732                         x += lyxfont::width(row->par()->getLabelstring(),
 733                                             labelfont);
 734                         x += lyxfont::width(layout.labelsep, labelfont);
 735                 }
 736                 break;
 737         case MARGIN_MANUAL:
 738                 x += lyxfont::signedWidth(layout.labelindent, labelfont);
 739                 if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 740                         if (!row->par()->getLabelWidthString().empty()) {
 741                                 x += lyxfont::width(row->par()->getLabelWidthString(),
 742                                                labelfont);
 743                                 x += lyxfont::width(layout.labelsep, labelfont);
 744                         }
 745                 }
 746                 break;
 747         case MARGIN_STATIC:
 748                 x += lyxfont::signedWidth(layout.leftmargin, tclass.defaultfont()) * 4
 749                         / (row->par()->getDepth() + 4);
 750                 break;
 751         case MARGIN_FIRST_DYNAMIC:
 752                 if (layout.labeltype == LABEL_MANUAL) {
 753                         if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 754                                 x += lyxfont::signedWidth(layout.leftmargin,
 755                                                           labelfont);
 756                         } else {
 757                                 x += lyxfont::signedWidth(layout.labelindent,
 758                                                           labelfont);
 759                         }
 760                 } else if (row->pos()
 761                            // Special case to fix problems with
 762                            // theorems (JMarc)
 763                            || (layout.labeltype == LABEL_STATIC
 764                                && layout.latextype == LATEX_ENVIRONMENT
 765                                && ! row->par()->isFirstInSequence())) {
 766                         x += lyxfont::signedWidth(layout.leftmargin,
 767                                                   labelfont);
 768                 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
 769                            && layout.labeltype != LABEL_BIBLIO
 770                            && layout.labeltype !=
 771                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 772                         x += lyxfont::signedWidth(layout.labelindent,
 773                                                   labelfont);
 774                         x += lyxfont::width(layout.labelsep, labelfont);
 775                         x += lyxfont::width(row->par()->getLabelstring(),
 776                                             labelfont);
 777                 }
 778                 break;
 779
 780         case MARGIN_RIGHT_ADDRESS_BOX:
 781         {
 782                 // ok, a terrible hack. The left margin depends on the widest
 783                 // row in this paragraph. Do not care about footnotes, they
 784                 // are *NOT* allowed in the LaTeX realisation of this layout.
 785
 786                 // find the first row of this paragraph
 787                 Row const * tmprow = row;
 788                 while (tmprow->previous()
 789                        && tmprow->previous()->par() == row->par())
 790                         tmprow = tmprow->previous();
 791
 792                 int minfill = tmprow->fill();
 793                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
 794                         tmprow = tmprow->next();
 795                         if (tmprow->fill() < minfill)
 796                                 minfill = tmprow->fill();
 797                 }
 798
 799                 x += lyxfont::signedWidth(layout.leftmargin,
 800                                           tclass.defaultfont());
 801                 x += minfill;
 802         }
 803         break;
 804         }
 805
 806         LyXAlignment align; // wrong type
 807
 808         if (row->par()->params().align() == LYX_ALIGN_LAYOUT)
 809                 align = layout.align;
 810         else
 811                 align = row->par()->params().align();
 812
 813         // set the correct parindent
 814         if (row->pos() == 0) {
 815                 if ((layout.labeltype == LABEL_NO_LABEL
 816                      || layout.labeltype == LABEL_TOP_ENVIRONMENT
 817                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 818                      || (layout.labeltype == LABEL_STATIC
 819                          && layout.latextype == LATEX_ENVIRONMENT
 820                          && ! row->par()->isFirstInSequence()))
 821                     && align == LYX_ALIGN_BLOCK
 822                     && !row->par()->params().noindent()
 823                     && (row->par()->layout ||
 824                         bview->buffer()->params.paragraph_separation ==
 825                         BufferParams::PARSEP_INDENT))
 826                         x += lyxfont::signedWidth(parindent,
 827                                                   tclass.defaultfont());
 828                 else if (layout.labeltype == LABEL_BIBLIO) {
 829                         // ale970405 Right width for bibitems
 830                         x += bibitemMaxWidth(bview, tclass.defaultfont());
 831                 }
 832         }
 833         return x;
 834 }
 835
 836
 837 int LyXText::rightMargin(Buffer const * buf, Row const * row) const
 838 {
 839         LyXTextClass const & tclass =
 840                 textclasslist.TextClass(buf->params.textclass);
 841         LyXLayout const & layout = tclass[row->par()->getLayout()];
 842
 843         int x = LYX_PAPER_MARGIN
 844                 + lyxfont::signedWidth(tclass.rightmargin(),
 845                                        tclass.defaultfont());
 846
 847         // this is the way, LyX handles the LaTeX-Environments.
 848         // I have had this idea very late, so it seems to be a
 849         // later added hack and this is true
 850         if (row->par()->getDepth()) {
 851                 // find the next level paragraph
 852
 853                 Paragraph * newpar = row->par();
 854
 855                 do {
 856                         newpar = newpar->previous();
 857                 } while (newpar
 858                          && newpar->getDepth() >= row->par()->getDepth());
 859
 860                 // make a corresponding row. Needed to call LeftMargin()
 861
 862                 // check wether it is a sufficent paragraph
 863                 if (newpar
 864                     && tclass[newpar->getLayout()].isEnvironment()) {
 865                         Row dummyrow;
 866                         dummyrow.par(newpar);
 867                         dummyrow.pos(0);
 868                         x = rightMargin(buf, &dummyrow);
 869                 } else {
 870                         // this is no longer an error, because this function
 871                         // is used to clear impossible depths after changing
 872                         // a layout. Since there is always a redo,
 873                         // LeftMargin() is always called
 874                         row->par()->params().depth(0);
 875                 }
 876         }
 877
 878         //lyxerr << "rightmargin: " << layout->rightmargin << endl;
 879         x += lyxfont::signedWidth(layout.rightmargin, tclass.defaultfont())
 880                 * 4 / (row->par()->getDepth() + 4);
 881         return x;
 882 }
 883
 884
 885 int LyXText::labelEnd(BufferView * bview, Row const * row) const
 886 {
 887         if (textclasslist.Style(bview->buffer()->params.textclass,
 888                                 row->par()->getLayout()).margintype
 889             == MARGIN_MANUAL) {
 890                 Row tmprow;
 891                 tmprow = *row;
 892                 tmprow.pos(row->par()->size());
 893                 return leftMargin(bview, &tmprow);  /* just the beginning
 894                                                 of the main body */
 895         } else
 896                 return 0;  /* LabelEnd is only needed, if the
 897                               layout fills a flushleft
 898                               label. */
 899 }
 900
 901
 902 // get the next breakpoint in a given paragraph
 903 pos_type
 904 LyXText::nextBreakPoint(BufferView * bview, Row const * row, int width) const
 905 {
 906         Paragraph * par = row->par();
 907
 908         if (width < 0)
 909                 return par->size();
 910
 911         pos_type const pos = row->pos();
 912
 913         // position of the last possible breakpoint
 914         // -1 isn't a suitable value, but a flag
 915         pos_type last_separator = -1;
 916         width -= rightMargin(bview->buffer(), row);
 917
 918         pos_type const main_body =
 919                 beginningOfMainBody(bview->buffer(), par);
 920         LyXLayout const & layout =
 921                 textclasslist.Style(bview->buffer()->params.textclass,
 922                                     par->getLayout());
 923         pos_type i = pos;
 924
 925         if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 926                 /* special code for right address boxes, only newlines count */
 927                 while (i < par->size()) {
 928                         if (par->isNewline(i)) {
 929                                 last_separator = i;
 930                                 i = par->size() - 1; // this means break
 931                                 //x = width;
 932                         } else if (par->isInset(i) && par->getInset(i)
 933                                 && par->getInset(i)->display()) {
 934                                 par->getInset(i)->display(false);
 935                         }
 936                         ++i;
 937                 }
 938         } else {
 939                 // Last position is an invariant
 940                 pos_type const last =
 941                         par->size();
 942                 // this is the usual handling
 943                 int x = leftMargin(bview, row);
 944                 bool doitonetime = true;
 945                 while (doitonetime || ((x < width) && (i < last))) {
 946                         doitonetime = false;
 947                         char const c = par->getChar(i);
 948                         if (IsNewlineChar(c)) {
 949                                 last_separator = i;
 950                                 x = width; // this means break
 951                         } else if (c == Paragraph::META_INSET &&
 952                                    par->getInset(i)) {
 953
 954                                 // check wether a Display() inset is
 955                                 // valid here. if not, change it to
 956                                 // non-display
 957                                 if (par->getInset(i)->display() &&
 958                                     (layout.isCommand() ||
 959                                      (layout.labeltype == LABEL_MANUAL
 960                                       && i < beginningOfMainBody(bview->buffer(), par)))) {
 961                                         // display istn't allowd
 962                                         par->getInset(i)->display(false);
 963                                         x += singleWidth(bview, par, i, c);
 964                                 } else if (par->getInset(i)->display() ||
 965                                          par->getInset(i)->needFullRow()) {
 966                                         // So break the line here
 967                                         if (i == pos) {
 968                                                 if (pos < last-1) {
 969                                                         last_separator = i;
 970                                                         if (IsLineSeparatorChar(par->getChar(i+1)))
 971                                                                 ++last_separator;
 972                                                 } else
 973                                                         last_separator = last; // to avoid extra rows
 974                                         } else
 975                                                 last_separator = i - 1;
 976                                         x = width;  // this means break
 977                                 } else {
 978                                         x += singleWidth(bview, par, i, c);
 979                                 }
 980                         } else  {
 981                                 if (IsLineSeparatorChar(c))
 982                                         last_separator = i;
 983                                 x += singleWidth(bview, par, i, c);
 984                         }
 985                         ++i;
 986                         if (i == main_body) {
 987                                 x += lyxfont::width(layout.labelsep,
 988                                                     getLabelFont(bview->buffer(), par));
 989                                 if (par->isLineSeparator(i - 1))
 990                                         x-= singleWidth(bview, par, i - 1);
 991                                 int left_margin = labelEnd(bview, row);
 992                                 if (x < left_margin)
 993                                         x = left_margin;
 994                         }
 995                 }
 996                 // end of paragraph is always a suitable separator
 997                 if (i == last && x < width)
 998                         last_separator = i;
 999         }
1000
1001         // well, if last_separator is still 0, the line isn't breakable.
1002         // don't care and cut simply at the end
1003         if (last_separator < 0) {
1004                 last_separator = i;
1005         }
1006
1007         // manual labels cannot be broken in LaTeX, do not care
1008         if (main_body && last_separator < main_body)
1009                 last_separator = main_body - 1;
1010
1011         return last_separator;
1012 }
1013
1014
1015 // returns the minimum space a row needs on the screen in pixel
1016 int LyXText::fill(BufferView * bview, Row * row, int paper_width) const
1017 {
1018         if (paper_width < 0)
1019                 return 0;
1020
1021         int w;
1022         // get the pure distance
1023         pos_type const last = rowLastPrintable(row);
1024
1025         // special handling of the right address boxes
1026         if (textclasslist.Style(bview->buffer()->params.textclass,
1027                                 row->par()->getLayout()).margintype
1028             == MARGIN_RIGHT_ADDRESS_BOX)
1029         {
1030                 int const tmpfill = row->fill();
1031                 row->fill(0); // the minfill in MarginLeft()
1032                 w = leftMargin(bview, row);
1033                 row->fill(tmpfill);
1034         } else
1035                 w = leftMargin(bview, row);
1036
1037         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1038                                                        row->par()->getLayout());
1039         pos_type const main_body =
1040                 beginningOfMainBody(bview->buffer(), row->par());
1041         pos_type i = row->pos();
1042
1043         while (i <= last) {
1044                 if (main_body > 0 && i == main_body) {
1045                         w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1046                         if (row->par()->isLineSeparator(i - 1))
1047                                 w -= singleWidth(bview, row->par(), i - 1);
1048                         int left_margin = labelEnd(bview, row);
1049                         if (w < left_margin)
1050                                 w = left_margin;
1051                 }
1052                 w += singleWidth(bview, row->par(), i);
1053                 ++i;
1054         }
1055         if (main_body > 0 && main_body > last) {
1056                 w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1057                 if (last >= 0 && row->par()->isLineSeparator(last))
1058                         w -= singleWidth(bview, row->par(), last);
1059                 int const left_margin = labelEnd(bview, row);
1060                 if (w < left_margin)
1061                         w = left_margin;
1062         }
1063
1064         int const fill = paper_width - w - rightMargin(bview->buffer(), row);
1065         return fill;
1066 }
1067
1068
1069 // returns the minimum space a manual label needs on the screen in pixel
1070 int LyXText::labelFill(BufferView * bview, Row const * row) const
1071 {
1072         pos_type last = beginningOfMainBody(bview->buffer(), row->par()) - 1;
1073         // -1 because a label ends either with a space that is in the label,
1074         // or with the beginning of a footnote that is outside the label.
1075
1076         // I don't understand this code in depth, but sometimes "last" is
1077         // less than 0 and this causes a crash. This fix seems to work
1078         // correctly, but I bet the real error is elsewhere.  The bug is
1079         // triggered when you have an open footnote in a paragraph
1080         // environment with a manual label. (Asger)
1081         if (last < 0) last = 0;
1082
1083         if (row->par()->isLineSeparator(last)) /* a sepearator at this end
1084                                                 does not count */
1085                 --last;
1086
1087         int w = 0;
1088         pos_type i = row->pos();
1089         while (i <= last) {
1090                 w += singleWidth(bview, row->par(), i);
1091                 ++i;
1092         }
1093
1094         int fill = 0;
1095         if (!row->par()->params().labelWidthString().empty()) {
1096                 fill = max(lyxfont::width(row->par()->params().labelWidthString(),
1097                                           getLabelFont(bview->buffer(), row->par())) - w,
1098                            0);
1099         }
1100
1101         return fill;
1102 }
1103
1104
1105 // returns the number of separators in the specified row. The separator
1106 // on the very last column doesnt count
1107 int LyXText::numberOfSeparators(Buffer const * buf, Row const * row) const
1108 {
1109         pos_type const last = rowLast(row);
1110         pos_type p = max(row->pos(), beginningOfMainBody(buf, row->par()));
1111         int n = 0;
1112         for (; p < last; ++p) {
1113                 if (row->par()->isSeparator(p)) {
1114                         ++n;
1115                 }
1116         }
1117         return n;
1118 }
1119
1120
1121 // returns the number of hfills in the specified row. The LyX-Hfill is
1122 // a LaTeX \hfill so that the hfills at the beginning and at the end were
1123 // ignored. This is *MUCH* more usefull than not to ignore!
1124 int LyXText::numberOfHfills(Buffer const * buf, Row const * row) const
1125 {
1126         pos_type const last = rowLast(row);
1127         pos_type first = row->pos();
1128         if (first) { /* hfill *DO* count at the beginning
1129                       * of paragraphs! */
1130                 while (first <= last && row->par()->isHfill(first))
1131                         ++first;
1132         }
1133
1134         first = max(first, beginningOfMainBody(buf, row->par()));
1135         int n = 0;
1136         for (pos_type p = first; p <= last; ++p) {
1137                 // last, because the end is ignored!
1138                 if (row->par()->isHfill(p)) {
1139                         ++n;
1140                 }
1141         }
1142         return n;
1143 }
1144
1145
1146 // like NumberOfHfills, but only those in the manual label!
1147 int LyXText::numberOfLabelHfills(Buffer const * buf, Row const * row) const
1148 {
1149         pos_type last = rowLast(row);
1150         pos_type first = row->pos();
1151         if (first) { /* hfill *DO* count at the beginning
1152                       * of paragraphs! */
1153                 while (first < last && row->par()->isHfill(first))
1154                         ++first;
1155         }
1156
1157         last = min(last, beginningOfMainBody(buf, row->par()));
1158         int n = 0;
1159         for (pos_type p = first; p < last; ++p) {
1160                 // last, because the end is ignored!
1161                 if (row->par()->isHfill(p)) {
1162                         ++n;
1163                 }
1164         }
1165         return n;
1166 }
1167
1168
1169 // returns true, if a expansion is needed.
1170 // Rules are given by LaTeX
1171 bool LyXText::hfillExpansion(Buffer const * buf, Row const * row_ptr,
1172                              pos_type pos) const
1173 {
1174         // by the way, is it a hfill?
1175         if (!row_ptr->par()->isHfill(pos))
1176                 return false;
1177
1178         // at the end of a row it does not count
1179         // unless another hfill exists on the line
1180         if (pos >= rowLast(row_ptr)) {
1181                 pos_type i = row_ptr->pos();
1182                 while (i < pos && !row_ptr->par()->isHfill(i)) {
1183                         ++i;
1184                 }
1185                 if (i == pos) {
1186                         return false;
1187                 }
1188         }
1189
1190         // at the beginning of a row it does not count, if it is not
1191         // the first row of a paragaph
1192         if (!row_ptr->pos())
1193                 return true;
1194
1195         // in some labels  it does not count
1196         if (textclasslist.Style(buf->params.textclass,
1197                                 row_ptr->par()->getLayout()).margintype
1198             != MARGIN_MANUAL
1199             && pos < beginningOfMainBody(buf, row_ptr->par()))
1200                 return false;
1201
1202         // if there is anything between the first char of the row and
1203         // the sepcified position that is not a newline and not a hfill,
1204         // the hfill will count, otherwise not
1205         pos_type i = row_ptr->pos();
1206         while (i < pos && (row_ptr->par()->isNewline(i)
1207                            || row_ptr->par()->isHfill(i)))
1208                 ++i;
1209
1210         return i != pos;
1211 }
1212
1213
1214 LColor::color LyXText::backgroundColor()
1215 {
1216         if (inset_owner)
1217                 return inset_owner->backgroundColor();
1218         else
1219                 return LColor::background;
1220 }
1221
1222 void LyXText::setHeightOfRow(BufferView * bview, Row * row_ptr) const
1223 {
1224         /* get the maximum ascent and the maximum descent */
1225         int asc = 0;
1226         int desc = 0;
1227         float layoutasc = 0;
1228         float layoutdesc = 0;
1229         float tmptop = 0;
1230         LyXFont tmpfont;
1231         Inset * tmpinset = 0;
1232
1233         /* ok , let us initialize the maxasc and maxdesc value.
1234          * This depends in LaTeX of the font of the last character
1235          * in the paragraph. The hack below is necessary because
1236          * of the possibility of open footnotes */
1237
1238         /* Correction: only the fontsize count. The other properties
1239            are taken from the layoutfont. Nicer on the screen :) */
1240         Paragraph * par = row_ptr->par();
1241         Paragraph * firstpar = row_ptr->par();
1242
1243         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1244                                                        firstpar->getLayout());
1245
1246         // as max get the first character of this row then it can increes but not
1247         // decrees the height. Just some point to start with so we don't have to
1248         // do the assignment below too often.
1249         LyXFont font = getFont(bview->buffer(), par, row_ptr->pos());
1250         LyXFont::FONT_SIZE const tmpsize = font.size();
1251         font = getLayoutFont(bview->buffer(), par);
1252         LyXFont::FONT_SIZE const size = font.size();
1253         font.setSize(tmpsize);
1254
1255         LyXFont labelfont = getLabelFont(bview->buffer(), par);
1256
1257         float spacing_val = 1.0;
1258         if (!row_ptr->par()->params().spacing().isDefault()) {
1259                 spacing_val = row_ptr->par()->params().spacing().getValue();
1260         } else {
1261                 spacing_val = bview->buffer()->params.spacing.getValue();
1262         }
1263         //lyxerr << "spacing_val = " << spacing_val << endl;
1264
1265         int maxasc = int(lyxfont::maxAscent(font) *
1266                          layout.spacing.getValue() *
1267                          spacing_val);
1268         int maxdesc = int(lyxfont::maxDescent(font) *
1269                           layout.spacing.getValue() *
1270                           spacing_val);
1271         pos_type const pos_end = rowLast(row_ptr);
1272         int labeladdon = 0;
1273         int maxwidth = 0;
1274
1275         // Check if any insets are larger
1276         for (pos_type pos = row_ptr->pos(); pos <= pos_end; ++pos) {
1277                 if (row_ptr->par()->isInset(pos)) {
1278                         tmpfont = getFont(bview->buffer(), row_ptr->par(), pos);
1279                         tmpinset = row_ptr->par()->getInset(pos);
1280                         if (tmpinset) {
1281 #if 1 // this is needed for deep update on initialitation
1282                                 tmpinset->update(bview, tmpfont);
1283 #endif
1284                                 asc = tmpinset->ascent(bview, tmpfont);
1285                                 desc = tmpinset->descent(bview, tmpfont);
1286                                 maxwidth += tmpinset->width(bview, tmpfont);
1287                                 maxasc = max(maxasc, asc);
1288                                 maxdesc = max(maxdesc, desc);
1289                         }
1290                 } else {
1291                         maxwidth += singleWidth(bview, row_ptr->par(), pos);
1292                 }
1293         }
1294
1295         // Check if any custom fonts are larger (Asger)
1296         // This is not completely correct, but we can live with the small,
1297         // cosmetic error for now.
1298         LyXFont::FONT_SIZE maxsize =
1299                 row_ptr->par()->highestFontInRange(row_ptr->pos(), pos_end, size);
1300         if (maxsize > font.size()) {
1301                 font.setSize(maxsize);
1302
1303                 asc = lyxfont::maxAscent(font);
1304                 desc = lyxfont::maxDescent(font);
1305                 if (asc > maxasc)
1306                         maxasc = asc;
1307                 if (desc > maxdesc)
1308                         maxdesc = desc;
1309         }
1310
1311         // This is nicer with box insets:
1312         ++maxasc;
1313         ++maxdesc;
1314
1315         row_ptr->ascent_of_text(maxasc);
1316
1317         // is it a top line?
1318         if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
1319
1320                 // some parksips VERY EASY IMPLEMENTATION
1321                 if (bview->buffer()->params.paragraph_separation ==
1322                         BufferParams::PARSEP_SKIP)
1323                 {
1324                         if (layout.isParagraph()
1325                                 && firstpar->getDepth() == 0
1326                                 && firstpar->previous())
1327                         {
1328                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1329                         } else if (firstpar->previous() &&
1330                                    textclasslist.Style(bview->buffer()->params.textclass,
1331                                                        firstpar->previous()->
1332                                                        getLayout()).isParagraph() &&
1333                                    firstpar->previous()->getDepth() == 0)
1334                         {
1335                                 // is it right to use defskip here too? (AS)
1336                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1337                         }
1338                 }
1339
1340                 // the paper margins
1341                 if (!row_ptr->par()->previous() && bv_owner)
1342                         maxasc += LYX_PAPER_MARGIN;
1343
1344                 // add the vertical spaces, that the user added
1345                 maxasc += getLengthMarkerHeight(bview, firstpar->params().spaceTop());
1346
1347                 // do not forget the DTP-lines!
1348                 // there height depends on the font of the nearest character
1349                 if (firstpar->params().lineTop())
1350                         maxasc += 2 * lyxfont::ascent('x', getFont(bview->buffer(),
1351                                                                    firstpar, 0));
1352
1353                 // and now the pagebreaks
1354                 if (firstpar->params().pagebreakTop())
1355                         maxasc += 3 * defaultHeight();
1356
1357                 // This is special code for the chapter, since the label of this
1358                 // layout is printed in an extra row
1359                 if (layout.labeltype == LABEL_COUNTER_CHAPTER
1360                         && bview->buffer()->params.secnumdepth >= 0)
1361                 {
1362                         float spacing_val = 1.0;
1363                         if (!row_ptr->par()->params().spacing().isDefault()) {
1364                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1365                         } else {
1366                                 spacing_val = bview->buffer()->params.spacing.getValue();
1367                         }
1368
1369                         labeladdon = int(lyxfont::maxDescent(labelfont) *
1370                                          layout.spacing.getValue() *
1371                                          spacing_val)
1372                                 + int(lyxfont::maxAscent(labelfont) *
1373                                       layout.spacing.getValue() *
1374                                       spacing_val);
1375                 }
1376
1377                 // special code for the top label
1378                 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1379                      || layout.labeltype == LABEL_BIBLIO
1380                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1381                     && row_ptr->par()->isFirstInSequence()
1382                     && !row_ptr->par()->getLabelstring().empty())
1383                 {
1384                         float spacing_val = 1.0;
1385                         if (!row_ptr->par()->params().spacing().isDefault()) {
1386                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1387                         } else {
1388                                 spacing_val = bview->buffer()->params.spacing.getValue();
1389                         }
1390
1391                         labeladdon = int(
1392                                 (lyxfont::maxAscent(labelfont) *
1393                                  layout.spacing.getValue() *
1394                                  spacing_val)
1395                                 +(lyxfont::maxDescent(labelfont) *
1396                                   layout.spacing.getValue() *
1397                                   spacing_val)
1398                                 + layout.topsep * defaultHeight()
1399                                 + layout.labelbottomsep *  defaultHeight());
1400                 }
1401
1402                 // and now the layout spaces, for example before and after a section,
1403                 // or between the items of a itemize or enumerate environment
1404
1405                 if (!firstpar->params().pagebreakTop()) {
1406                         Paragraph * prev = row_ptr->par()->previous();
1407                         if (prev)
1408                                 prev = row_ptr->par()->depthHook(row_ptr->par()->getDepth());
1409                         if (prev && prev->getLayout() == firstpar->getLayout() &&
1410                                 prev->getDepth() == firstpar->getDepth() &&
1411                                 prev->getLabelWidthString() == firstpar->getLabelWidthString())
1412                         {
1413                                 layoutasc = (layout.itemsep * defaultHeight());
1414                         } else if (row_ptr->previous()) {
1415                                 tmptop = layout.topsep;
1416
1417                                 if (row_ptr->previous()->par()->getDepth() >= row_ptr->par()->getDepth())
1418                                         tmptop -= textclasslist.Style(bview->buffer()->params.textclass,
1419                                                                       row_ptr->previous()->par()->
1420                                                                       getLayout()).bottomsep;
1421
1422                                 if (tmptop > 0)
1423                                         layoutasc = (tmptop * defaultHeight());
1424                         } else if (row_ptr->par()->params().lineTop()) {
1425                                 tmptop = layout.topsep;
1426
1427                                 if (tmptop > 0)
1428                                         layoutasc = (tmptop * defaultHeight());
1429                         }
1430
1431                         prev = row_ptr->par()->outerHook();
1432                         if (prev)  {
1433                                 maxasc += int(textclasslist.Style(bview->buffer()->params.textclass,
1434                                               prev->getLayout()).parsep * defaultHeight());
1435                         } else {
1436                                 if (firstpar->previous() &&
1437                                         firstpar->previous()->getDepth() == 0 &&
1438                                         firstpar->previous()->getLayout() !=
1439                                         firstpar->getLayout())
1440                                 {
1441                                         // avoid parsep
1442                                 } else if (firstpar->previous()) {
1443                                         maxasc += int(layout.parsep * defaultHeight());
1444                                 }
1445                         }
1446                 }
1447         }
1448
1449         // is it a bottom line?
1450         if (row_ptr->par() == par
1451                 && (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par()))
1452         {
1453                 // the paper margins
1454                 if (!par->next() && bv_owner)
1455                         maxdesc += LYX_PAPER_MARGIN;
1456
1457                 // add the vertical spaces, that the user added
1458                 maxdesc += getLengthMarkerHeight(bview, firstpar->params().spaceBottom());
1459
1460                 // do not forget the DTP-lines!
1461                 // there height depends on the font of the nearest character
1462                 if (firstpar->params().lineBottom())
1463                         maxdesc += 2 * lyxfont::ascent('x',
1464                                                        getFont(bview->buffer(),
1465                                                                par,
1466                                                                max(pos_type(0), par->size() - 1)));
1467
1468                 // and now the pagebreaks
1469                 if (firstpar->params().pagebreakBottom())
1470                         maxdesc += 3 * defaultHeight();
1471
1472                 // and now the layout spaces, for example before and after
1473                 // a section, or between the items of a itemize or enumerate
1474                 // environment
1475                 if (!firstpar->params().pagebreakBottom() && row_ptr->par()->next()) {
1476                         Paragraph * nextpar = row_ptr->par()->next();
1477                         Paragraph * comparepar = row_ptr->par();
1478                         float usual = 0;
1479                         float unusual = 0;
1480
1481                         if (comparepar->getDepth() > nextpar->getDepth()) {
1482                                 usual = (textclasslist.Style(bview->buffer()->params.textclass,
1483                                          comparepar->getLayout()).bottomsep * defaultHeight());
1484                                 comparepar = comparepar->depthHook(nextpar->getDepth());
1485                                 if (comparepar->getLayout()!= nextpar->getLayout()
1486                                         || nextpar->getLabelWidthString() !=
1487                                         comparepar->getLabelWidthString())
1488                                 {
1489                                         unusual = (textclasslist.Style(bview->buffer()->params.textclass,
1490                                                    comparepar->getLayout()).bottomsep * defaultHeight());
1491                                 }
1492                                 if (unusual > usual)
1493                                         layoutdesc = unusual;
1494                                 else
1495                                         layoutdesc = usual;
1496                         } else if (comparepar->getDepth() ==  nextpar->getDepth()) {
1497
1498                                 if (comparepar->getLayout()!= nextpar->getLayout()
1499                                         || nextpar->getLabelWidthString() !=
1500                                         comparepar->getLabelWidthString())
1501                                         layoutdesc = int(textclasslist.Style(bview->buffer()->params.textclass,
1502                                                                                                                  comparepar->getLayout()).bottomsep * defaultHeight());
1503                         }
1504                 }
1505         }
1506
1507         // incalculate the layout spaces
1508         maxasc += int(layoutasc * 2 / (2 + firstpar->getDepth()));
1509         maxdesc += int(layoutdesc * 2 / (2 + firstpar->getDepth()));
1510
1511         // calculate the new height of the text
1512         height -= row_ptr->height();
1513
1514         row_ptr->height(maxasc + maxdesc + labeladdon);
1515         row_ptr->baseline(maxasc + labeladdon);
1516
1517         height += row_ptr->height();
1518         float x = 0;
1519         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
1520                 float dummy;
1521                 prepareToPrint(bview, row_ptr, x, dummy, dummy, dummy, false);
1522         }
1523         row_ptr->width(int(maxwidth + x));
1524         if (inset_owner) {
1525                 Row * r = firstrow;
1526                 width = max(0,workWidth(bview));
1527                 while (r) {
1528                         if (r->width() > width)
1529                                 width = r->width();
1530                         r = r->next();
1531                 }
1532         }
1533 }
1534
1535
1536 /* Appends the implicit specified paragraph behind the specified row,
1537  * start at the implicit given position */
1538 void LyXText::appendParagraph(BufferView * bview, Row * row) const
1539 {
1540         bool not_ready = true;
1541
1542         // The last character position of a paragraph is an invariant so we can
1543         // safely get it here. (Asger)
1544         pos_type const lastposition = row->par()->size();
1545         do {
1546                 // Get the next breakpoint
1547                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1548
1549                 Row * tmprow = row;
1550
1551                 // Insert the new row
1552                 if (z < lastposition) {
1553                         ++z;
1554                         insertRow(row, row->par(), z);
1555                         row = row->next();
1556
1557                         row->height(0);
1558                 } else
1559                         not_ready = false;
1560
1561                 // Set the dimensions of the row
1562                 // fixed fill setting now by calling inset->update() in
1563                 // SingleWidth when needed!
1564                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1565                 setHeightOfRow(bview, tmprow);
1566
1567         } while (not_ready);
1568 }
1569
1570
1571 void LyXText::breakAgain(BufferView * bview, Row * row) const
1572 {
1573         bool not_ready = true;
1574
1575         do  {
1576                 // get the next breakpoint
1577                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1578                 Row * tmprow = row;
1579
1580                 if (z < row->par()->size()) {
1581                         if (!row->next() || (row->next() && row->next()->par() != row->par())) {
1582                                 // insert a new row
1583                                 ++z;
1584                                 insertRow(row, row->par(), z);
1585                                 row = row->next();
1586                                 row->height(0);
1587                         } else  {
1588                                 row = row->next();
1589                                 ++z;
1590                                 if (row->pos() == z)
1591                                         not_ready = false;     // the rest will not change
1592                                 else {
1593                                         row->pos(z);
1594                                 }
1595                         }
1596                 } else {
1597                         /* if there are some rows too much, delete them */
1598                         /* only if you broke the whole paragraph! */
1599                         Row * tmprow2 = row;
1600                         while (tmprow2->next() && tmprow2->next()->par() == row->par()) {
1601                                 tmprow2 = tmprow2->next();
1602                         }
1603                         while (tmprow2 != row) {
1604                                 tmprow2 = tmprow2->previous();
1605                                 removeRow(tmprow2->next());
1606                         }
1607                         not_ready = false;
1608                 }
1609
1610                 /* set the dimensions of the row */
1611                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1612                 setHeightOfRow(bview, tmprow);
1613         } while (not_ready);
1614 }
1615
1616
1617 // this is just a little changed version of break again
1618 void LyXText::breakAgainOneRow(BufferView * bview, Row * row)
1619 {
1620         // get the next breakpoint
1621         pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1622         Row * tmprow = row;
1623
1624         if (z < row->par()->size()) {
1625                 if (!row->next()
1626                     || (row->next() && row->next()->par() != row->par())) {
1627                         /* insert a new row */
1628                         ++z;
1629                         insertRow(row, row->par(), z);
1630                         row = row->next();
1631                         row->height(0);
1632                 } else  {
1633                         row= row->next();
1634                         ++z;
1635                         if (row->pos() != z)
1636                                 row->pos(z);
1637                 }
1638         } else {
1639                 // if there are some rows too much, delete them
1640                 // only if you broke the whole paragraph!
1641                 Row * tmprow2 = row;
1642                 while (tmprow2->next()
1643                        && tmprow2->next()->par() == row->par()) {
1644                         tmprow2 = tmprow2->next();
1645                 }
1646                 while (tmprow2 != row) {
1647                         tmprow2 = tmprow2->previous();
1648                         removeRow(tmprow2->next());
1649                 }
1650         }
1651
1652         // set the dimensions of the row
1653         tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1654         setHeightOfRow(bview, tmprow);
1655 }
1656
1657
1658 void LyXText::breakParagraph(BufferView * bview, char keep_layout)
1659 {
1660    LyXLayout const & layout =
1661            textclasslist.Style(bview->buffer()->params.textclass,
1662                                cursor.par()->getLayout());
1663
1664    // this is only allowed, if the current paragraph is not empty or caption
1665    if ((cursor.par()->size() <= 0)
1666        && layout.labeltype!= LABEL_SENSITIVE)
1667            return;
1668
1669    setUndo(bview, Undo::INSERT,cursor.par(),cursor.par()->next());
1670
1671    // Always break behind a space
1672    //
1673    // It is better to erase the space (Dekel)
1674    if (cursor.pos() < cursor.par()->size()
1675        && cursor.par()->isLineSeparator(cursor.pos()))
1676            cursor.par()->erase(cursor.pos());
1677            // cursor.pos(cursor.pos() + 1);
1678
1679    // break the paragraph
1680    if (keep_layout)
1681      keep_layout = 2;
1682    else
1683      keep_layout = layout.isEnvironment();
1684    cursor.par()->breakParagraph(bview->buffer()->params, cursor.pos(),
1685                                 keep_layout);
1686
1687    // well this is the caption hack since one caption is really enough
1688    if (layout.labeltype == LABEL_SENSITIVE) {
1689      if (!cursor.pos())
1690              // set to standard-layout
1691              cursor.par()->setLayout(0);
1692      else
1693              // set to standard-layout
1694              cursor.par()->next()->setLayout(0);
1695    }
1696
1697    /* if the cursor is at the beginning of a row without prior newline,
1698     * move one row up!
1699     * This touches only the screen-update. Otherwise we would may have
1700     * an empty row on the screen */
1701    if (cursor.pos() && !cursor.row()->par()->isNewline(cursor.row()->pos() - 1)
1702        && cursor.row()->pos() == cursor.pos()) {
1703            cursorLeft(bview);
1704    }
1705
1706    status(bview, LyXText::NEED_MORE_REFRESH);
1707    refresh_row = cursor.row();
1708    refresh_y = cursor.y() - cursor.row()->baseline();
1709
1710    // Do not forget the special right address boxes
1711    if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
1712       while (refresh_row->previous() &&
1713              refresh_row->previous()->par() == refresh_row->par()) {
1714               refresh_row = refresh_row->previous();
1715               refresh_y -= refresh_row->height();
1716       }
1717    }
1718    removeParagraph(cursor.row());
1719
1720    // set the dimensions of the cursor row
1721    cursor.row()->fill(fill(bview, cursor.row(), workWidth(bview)));
1722
1723    setHeightOfRow(bview, cursor.row());
1724
1725    while (cursor.par()->next()->size()
1726           && cursor.par()->next()->isNewline(0))
1727            cursor.par()->next()->erase(0);
1728
1729    insertParagraph(bview, cursor.par()->next(), cursor.row());
1730
1731    updateCounters(bview, cursor.row()->previous());
1732
1733    /* This check is necessary. Otherwise the new empty paragraph will
1734     * be deleted automatically. And it is more friendly for the user! */
1735    if (cursor.pos())
1736            setCursor(bview, cursor.par()->next(), 0);
1737    else
1738            setCursor(bview, cursor.par(), 0);
1739
1740    if (cursor.row()->next())
1741            breakAgain(bview, cursor.row()->next());
1742
1743    need_break_row = 0;
1744 }
1745
1746
1747 // Just a macro to make some thing easier.
1748 void LyXText::redoParagraph(BufferView * bview) const
1749 {
1750         clearSelection();
1751         redoParagraphs(bview, cursor, cursor.par()->next());
1752         setCursorIntern(bview, cursor.par(), cursor.pos());
1753 }
1754
1755
1756 /* insert a character, moves all the following breaks in the
1757  * same Paragraph one to the right and make a rebreak */
1758 void LyXText::insertChar(BufferView * bview, char c)
1759 {
1760         setUndo(bview, Undo::INSERT,
1761                 cursor.par(), cursor.par()->next());
1762
1763         // When the free-spacing option is set for the current layout,
1764         // disable the double-space checking
1765
1766         bool const freeSpacing =
1767                 textclasslist.Style(bview->buffer()->params.textclass,
1768                                cursor.row()->par()->getLayout()).free_spacing ||
1769                 cursor.row()->par()->isFreeSpacing();
1770
1771
1772         if (lyxrc.auto_number) {
1773                 static string const number_operators = "+-/*";
1774                 static string const number_unary_operators = "+-";
1775                 static string const number_seperators = ".,:";
1776
1777                 if (current_font.number() == LyXFont::ON) {
1778                         if (!isdigit(c) && !contains(number_operators, c) &&
1779                             !(contains(number_seperators, c) &&
1780                               cursor.pos() >= 1 &&
1781                               cursor.pos() < cursor.par()->size() &&
1782                               getFont(bview->buffer(),
1783                                       cursor.par(),
1784                                       cursor.pos()).number() == LyXFont::ON &&
1785                               getFont(bview->buffer(),
1786                                       cursor.par(),
1787                                       cursor.pos() - 1).number() == LyXFont::ON)
1788                             )
1789                                 number(bview); // Set current_font.number to OFF
1790                 } else if (isdigit(c) &&
1791                            real_current_font.isVisibleRightToLeft()) {
1792                         number(bview); // Set current_font.number to ON
1793
1794                         if (cursor.pos() > 0) {
1795                                 char const c = cursor.par()->getChar(cursor.pos() - 1);
1796                                 if (contains(number_unary_operators, c) &&
1797                                     (cursor.pos() == 1 ||
1798                                      cursor.par()->isSeparator(cursor.pos() - 2) ||
1799                                      cursor.par()->isNewline(cursor.pos() - 2) )
1800                                    ) {
1801                                         setCharFont(bview->buffer(),
1802                                                     cursor.par(),
1803                                                     cursor.pos() - 1,
1804                                                     current_font);
1805                                 } else if (contains(number_seperators, c) &&
1806                                            cursor.pos() >= 2 &&
1807                                            getFont(bview->buffer(),
1808                                                    cursor.par(),
1809                                                    cursor.pos() - 2).number() == LyXFont::ON) {
1810                                         setCharFont(bview->buffer(),
1811                                                     cursor.par(),
1812                                                     cursor.pos() - 1,
1813                                                     current_font);
1814                                 }
1815                         }
1816                 }
1817         }
1818
1819
1820         /* First check, if there will be two blanks together or a blank at
1821           the beginning of a paragraph.
1822           I decided to handle blanks like normal characters, the main
1823           difference are the special checks when calculating the row.fill
1824           (blank does not count at the end of a row) and the check here */
1825
1826         // The bug is triggered when we type in a description environment:
1827         // The current_font is not changed when we go from label to main text
1828         // and it should (along with realtmpfont) when we type the space.
1829         // CHECK There is a bug here! (Asger)
1830
1831         LyXFont realtmpfont = real_current_font;
1832         LyXFont rawtmpfont = current_font;  /* store the current font.
1833                                      * This is because of the use
1834                                      * of cursor movements. The moving
1835                                      * cursor would refresh the
1836                                      * current font */
1837
1838         // Get the font that is used to calculate the baselineskip
1839         pos_type const lastpos = cursor.par()->size();
1840         LyXFont rawparfont =
1841                 cursor.par()->getFontSettings(bview->buffer()->params,
1842                                               lastpos - 1);
1843
1844         bool jumped_over_space = false;
1845
1846         if (!freeSpacing && IsLineSeparatorChar(c)) {
1847                 if ((cursor.pos() > 0
1848                      && cursor.par()->isLineSeparator(cursor.pos() - 1))
1849                     || (cursor.pos() > 0
1850                         && cursor.par()->isNewline(cursor.pos() - 1))
1851                     || (cursor.pos() == 0)) {
1852                         static bool sent_space_message = false;
1853                         if (!sent_space_message) {
1854                                 if (cursor.pos() == 0)
1855                                         bview->owner()->message(_("You cannot insert a space at the beginning of a paragraph.  Please read the Tutorial."));
1856                                 else
1857                                         bview->owner()->message(_("You cannot type two spaces this way.  Please read the Tutorial."));
1858                                 sent_space_message = true;
1859                         }
1860                         charInserted();
1861                         return;
1862                 }
1863         } else if (IsNewlineChar(c)) {
1864                 if (cursor.par() == cursor.par()
1865                     && cursor.pos() <= beginningOfMainBody(bview->buffer(), cursor.par())) {
1866                         charInserted();
1867                         return;
1868                 }
1869                 /* No newline at first position
1870                  * of a paragraph or behind labels.
1871                  * TeX does not allow that. */
1872
1873                 if (cursor.pos() < cursor.par()->size() &&
1874                     cursor.par()->isLineSeparator(cursor.pos()))
1875                         // newline always after a blank!
1876                         cursorRight(bview);
1877                 cursor.row()->fill(-1);        // to force a new break
1878         }
1879
1880         // the display inset stuff
1881         if (cursor.row()->par()->isInset(cursor.row()->pos())) {
1882                 Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
1883                 if (inset && (inset->display() || inset->needFullRow())) {
1884                         // force a new break
1885                         cursor.row()->fill(-1); // to force a new break
1886                 }
1887         }
1888
1889         // get the cursor row fist
1890         Row * row = cursor.row();
1891         int y = cursor.y() - row->baseline();
1892         if (c != Paragraph::META_INSET) /* Here case LyXText::InsertInset
1893                                             * already insertet the character */
1894                 cursor.par()->insertChar(cursor.pos(), c);
1895         setCharFont(bview->buffer(), cursor.par(), cursor.pos(), rawtmpfont);
1896
1897         if (!jumped_over_space) {
1898                 // refresh the positions
1899                 Row * tmprow = row;
1900                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
1901                         tmprow = tmprow->next();
1902                         tmprow->pos(tmprow->pos() + 1);
1903                 }
1904         }
1905
1906         // Is there a break one row above
1907         if ((cursor.par()->isLineSeparator(cursor.pos())
1908              || cursor.par()->isNewline(cursor.pos())
1909              || cursor.row()->fill() == -1)
1910             && row->previous() && row->previous()->par() == row->par()) {
1911                 pos_type z = nextBreakPoint(bview,
1912                                                            row->previous(),
1913                                                            workWidth(bview));
1914                 if (z >= row->pos()) {
1915                         row->pos(z + 1);
1916
1917                         // set the dimensions of the row above
1918                         row->previous()->fill(fill(bview,
1919                                                    row->previous(),
1920                                                    workWidth(bview)));
1921
1922                         setHeightOfRow(bview, row->previous());
1923
1924                         y -= row->previous()->height();
1925                         refresh_y = y;
1926                         refresh_row = row->previous();
1927                         status(bview, LyXText::NEED_MORE_REFRESH);
1928
1929                         breakAgainOneRow(bview, row);
1930
1931                         current_font = rawtmpfont;
1932                         real_current_font = realtmpfont;
1933                         setCursor(bview, cursor.par(), cursor.pos() + 1,
1934                                   false, cursor.boundary());
1935                         // cursor MUST be in row now.
1936
1937                         if (row->next() && row->next()->par() == row->par())
1938                                 need_break_row = row->next();
1939                         else
1940                                 need_break_row = 0;
1941
1942                         // check, wether the last characters font has changed.
1943                         if (cursor.pos() && cursor.pos() == cursor.par()->size()
1944                             && rawparfont != rawtmpfont)
1945                                 redoHeightOfParagraph(bview, cursor);
1946
1947                         charInserted();
1948                         return;
1949                 }
1950         }
1951
1952         // recalculate the fill of the row
1953         if (row->fill() >= 0)  /* needed because a newline
1954                               * will set fill to -1. Otherwise
1955                               * we would not get a rebreak! */
1956                 row->fill(fill(bview, row, workWidth(bview)));
1957         if (row->fill() < 0) {
1958                 refresh_y = y;
1959                 refresh_row = row;
1960                 refresh_x = cursor.x();
1961                 refresh_pos = cursor.pos();
1962                 status(bview, LyXText::NEED_MORE_REFRESH);
1963                 breakAgainOneRow(bview, row);
1964                 // will the cursor be in another row now?
1965                 if (rowLast(row) <= cursor.pos() + 1 && row->next()) {
1966                         if (row->next() && row->next()->par() == row->par())
1967                                 // this should always be true
1968                                 row = row->next();
1969                         breakAgainOneRow(bview, row);
1970                 }
1971                 current_font = rawtmpfont;
1972                 real_current_font = realtmpfont;
1973
1974                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
1975                           cursor.boundary());
1976                 if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
1977                     != cursor.boundary())
1978                         setCursor(bview, cursor.par(), cursor.pos(), false,
1979                           !cursor.boundary());
1980                 if (row->next() && row->next()->par() == row->par())
1981                         need_break_row = row->next();
1982                 else
1983                         need_break_row = 0;
1984         } else {
1985                 refresh_y = y;
1986                 refresh_x = cursor.x();
1987                 refresh_row = row;
1988                 refresh_pos = cursor.pos();
1989
1990                 int const tmpheight = row->height();
1991                 setHeightOfRow(bview, row);
1992                 if (tmpheight == row->height())
1993                         status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
1994                 else
1995                         status(bview, LyXText::NEED_MORE_REFRESH);
1996
1997                 current_font = rawtmpfont;
1998                 real_current_font = realtmpfont;
1999                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
2000                           cursor.boundary());
2001         }
2002
2003         // check, wether the last characters font has changed.
2004         if (cursor.pos() && cursor.pos() == cursor.par()->size()
2005             && rawparfont != rawtmpfont) {
2006                 redoHeightOfParagraph(bview, cursor);
2007         } else {
2008                 // now the special right address boxes
2009                 if (textclasslist.Style(bview->buffer()->params.textclass,
2010                                    cursor.par()->getLayout()).margintype
2011                     == MARGIN_RIGHT_ADDRESS_BOX) {
2012                         redoDrawingOfParagraph(bview, cursor);
2013                 }
2014         }
2015
2016         charInserted();
2017 }
2018
2019
2020 void LyXText::charInserted()
2021 {
2022         // Here we could call FinishUndo for every 20 characters inserted.
2023         // This is from my experience how emacs does it.
2024         static unsigned int counter;
2025         if (counter < 20) {
2026                 ++counter;
2027         } else {
2028                 finishUndo();
2029                 counter = 0;
2030         }
2031 }
2032
2033
2034 void LyXText::prepareToPrint(BufferView * bview,
2035                              Row * row, float & x,
2036                              float & fill_separator,
2037                              float & fill_hfill,
2038                              float & fill_label_hfill,
2039                              bool bidi) const
2040 {
2041         float nlh;
2042         float ns;
2043
2044         float w = row->fill();
2045         fill_hfill = 0;
2046         fill_label_hfill = 0;
2047         fill_separator = 0;
2048         fill_label_hfill = 0;
2049
2050         bool const is_rtl =
2051                 row->par()->isRightToLeftPar(bview->buffer()->params);
2052         if (is_rtl) {
2053                 x = (workWidth(bview) > 0)
2054                         ? rightMargin(bview->buffer(), row) : 0;
2055         } else
2056                 x = (workWidth(bview) > 0) ? leftMargin(bview, row) : 0;
2057
2058         // is there a manual margin with a manual label
2059         if (textclasslist.Style(bview->buffer()->params.textclass,
2060                            row->par()->getLayout()).margintype == MARGIN_MANUAL
2061             && textclasslist.Style(bview->buffer()->params.textclass,
2062                               row->par()->getLayout()).labeltype == LABEL_MANUAL) {
2063
2064                 /* one more since labels are left aligned */
2065                 nlh = numberOfLabelHfills(bview->buffer(), row) + 1;
2066                 if (nlh && !row->par()->getLabelWidthString().empty()) {
2067                         fill_label_hfill = labelFill(bview, row) / nlh;
2068                 }
2069         }
2070
2071         // are there any hfills in the row?
2072         float const nh = numberOfHfills(bview->buffer(), row);
2073
2074         if (nh) {
2075                 if (w > 0)
2076                         fill_hfill = w / nh;
2077         } else  {
2078                 // is it block, flushleft or flushright?
2079                 // set x how you need it
2080                 int align;
2081                 if (row->par()->params().align() == LYX_ALIGN_LAYOUT) {
2082                         align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->getLayout()).align;
2083                 } else {
2084                         align = row->par()->params().align();
2085                 }
2086
2087                 // center displayed insets
2088                 Inset * inset;
2089                 if (row->par()->isInset(row->pos())
2090                     && (inset=row->par()->getInset(row->pos()))
2091                     && (inset->display())) // || (inset->scroll() < 0)))
2092                     align = (inset->lyxCode() == Inset::MATHMACRO_CODE)
2093                         ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
2094
2095                 switch (align) {
2096             case LYX_ALIGN_BLOCK:
2097                         ns = numberOfSeparators(bview->buffer(), row);
2098                         if (ns && row->next() && row->next()->par() == row->par() &&
2099                             !(row->next()->par()->isNewline(row->next()->pos() - 1))
2100                             && !(row->next()->par()->isInset(row->next()->pos())
2101                                  && row->next()->par()->getInset(row->next()->pos())
2102                                  && row->next()->par()->getInset(row->next()->pos())->display())
2103                                 )
2104                         {
2105                                 fill_separator = w / ns;
2106                         } else if (is_rtl) {
2107                                 x += w;
2108                         }
2109                         break;
2110             case LYX_ALIGN_RIGHT:
2111                         x += w;
2112                         break;
2113             case LYX_ALIGN_CENTER:
2114                         x += w / 2;
2115                         break;
2116                 }
2117         }
2118         if (!bidi)
2119                 return;
2120
2121         computeBidiTables(bview->buffer(), row);
2122         if (is_rtl) {
2123                 pos_type main_body =
2124                         beginningOfMainBody(bview->buffer(), row->par());
2125                 pos_type last = rowLast(row);
2126
2127                 if (main_body > 0 &&
2128                     (main_body-1 > last ||
2129                      !row->par()->isLineSeparator(main_body-1))) {
2130                         LyXLayout const & layout =
2131                                 textclasslist.Style(bview->buffer()->params.textclass,
2132                                                     row->par()->getLayout());
2133                         x += lyxfont::width(layout.labelsep,
2134                                             getLabelFont(bview->buffer(), row->par()));
2135                         if (main_body-1 <= last)
2136                                 x += fill_label_hfill;
2137                 }
2138         }
2139 }
2140
2141 /* important for the screen */
2142
2143
2144 /* the cursor set functions have a special mechanism. When they
2145 * realize, that you left an empty paragraph, they will delete it.
2146 * They also delete the corresponding row */
2147
2148 void LyXText::cursorRightOneWord(BufferView * bview) const
2149 {
2150         // treat floats, HFills and Insets as words
2151         LyXCursor tmpcursor = cursor;
2152         // CHECK See comment on top of text.C
2153
2154         if (tmpcursor.pos() == tmpcursor.par()->size()
2155             && tmpcursor.par()->next()) {
2156                         tmpcursor.par(tmpcursor.par()->next());
2157                         tmpcursor.pos(0);
2158         } else {
2159                 int steps = 0;
2160
2161                 // Skip through initial nonword stuff.
2162                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2163                        ! tmpcursor.par()->isWord(tmpcursor.pos())) {
2164                   //    printf("Current pos1 %d", tmpcursor.pos()) ;
2165                         tmpcursor.pos(tmpcursor.pos() + 1);
2166                         ++steps;
2167                 }
2168                 // Advance through word.
2169                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2170                         tmpcursor.par()->isWord( tmpcursor.pos())) {
2171                   //     printf("Current pos2 %d", tmpcursor.pos()) ;
2172                         tmpcursor.pos(tmpcursor.pos() + 1);
2173                         ++steps;
2174                 }
2175         }
2176         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2177 }
2178
2179
2180 void LyXText::cursorTab(BufferView * bview) const
2181 {
2182     LyXCursor tmpcursor = cursor;
2183     while (tmpcursor.pos() < tmpcursor.par()->size()
2184            && !tmpcursor.par()->isNewline(tmpcursor.pos()))
2185         tmpcursor.pos(tmpcursor.pos() + 1);
2186
2187     if (tmpcursor.pos() == tmpcursor.par()->size()){
2188         if (tmpcursor.par()->next()) {
2189             tmpcursor.par(tmpcursor.par()->next());
2190             tmpcursor.pos(0);
2191         }
2192     } else
2193         tmpcursor.pos(tmpcursor.pos() + 1);
2194     setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2195 }
2196
2197
2198 /* -------> Skip initial whitespace at end of word and move cursor to *start*
2199             of prior word, not to end of next prior word. */
2200
2201 void LyXText::cursorLeftOneWord(BufferView * bview)  const
2202 {
2203         LyXCursor tmpcursor = cursor;
2204         cursorLeftOneWord(tmpcursor);
2205         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2206 }
2207
2208 void LyXText::cursorLeftOneWord(LyXCursor  & cur)  const
2209 {
2210         // treat HFills, floats and Insets as words
2211         cur = cursor;
2212         while (cur.pos()
2213                && (cur.par()->isSeparator(cur.pos() - 1)
2214                    || cur.par()->isKomma(cur.pos() - 1))
2215                && !(cur.par()->isHfill(cur.pos() - 1)
2216                     || cur.par()->isInset(cur.pos() - 1)))
2217                 cur.pos(cur.pos() - 1);
2218
2219         if (cur.pos()
2220             && (cur.par()->isInset(cur.pos() - 1)
2221                 || cur.par()->isHfill(cur.pos() - 1))) {
2222                 cur.pos(cur.pos() - 1);
2223         } else if (!cur.pos()) {
2224                 if (cur.par()->previous()){
2225                         cur.par(cur.par()->previous());
2226                         cur.pos(cur.par()->size());
2227                 }
2228         } else {                // Here, cur != 0
2229                 while (cur.pos() > 0 &&
2230                        cur.par()->isWord(cur.pos()-1) )
2231                         cur.pos(cur.pos() - 1);
2232         }
2233 }
2234
2235 /* -------> Select current word. This depends on behaviour of
2236 CursorLeftOneWord(), so it is patched as well. */
2237 void LyXText::getWord(LyXCursor & from, LyXCursor & to,
2238                       word_location const loc) const
2239 {
2240         // first put the cursor where we wana start to select the word
2241         from = cursor;
2242         switch(loc) {
2243         case WHOLE_WORD_STRICT:
2244                 if (cursor.pos() == 0 || cursor.pos() == cursor.par()->size()
2245                     || cursor.par()->isSeparator(cursor.pos())
2246                     || cursor.par()->isKomma(cursor.pos())
2247                     || cursor.par()->isSeparator(cursor.pos() -1)
2248                     || cursor.par()->isKomma(cursor.pos() -1)) {
2249                         to = from;
2250                         return;
2251                 }
2252                 // no break here, we go to the next
2253
2254         case WHOLE_WORD:
2255                 // Move cursor to the beginning, when not already there.
2256                 if (from.pos() && !from.par()->isSeparator(from.pos() - 1)
2257                     && !from.par()->isKomma(from.pos() - 1))
2258                         cursorLeftOneWord(from);
2259                 break;
2260         case PREVIOUS_WORD:
2261                 // always move the cursor to the beginning of previous word
2262                 cursorLeftOneWord(from);
2263                 break;
2264         case NEXT_WORD:
2265                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet\n";
2266                 break;
2267         case PARTIAL_WORD:
2268                 break;
2269         }
2270         to = from;
2271         while (to.pos() < to.par()->size()
2272                && !to.par()->isSeparator(to.pos())
2273                && !to.par()->isKomma(to.pos())
2274                && !to.par()->isHfill(to.pos()) )
2275         {
2276                 to.pos(to.pos() + 1);
2277         }
2278 }
2279
2280
2281 void LyXText::selectWord(BufferView * bview, word_location const loc)
2282 {
2283         LyXCursor from;
2284         LyXCursor to;
2285         getWord(from, to, loc);
2286         if (cursor != from)
2287                 setCursor(bview, from.par(), from.pos());
2288         if (to == from)
2289                 return;
2290         selection.cursor = cursor;
2291         setCursor(bview, to.par(), to.pos() );
2292         setSelection(bview);
2293 }
2294
2295
2296 /* -------> Select the word currently under the cursor when no
2297         selection is currently set */
2298 bool LyXText::selectWordWhenUnderCursor(BufferView * bview,
2299                                         word_location const loc)
2300 {
2301         if (!selection.set()) {
2302                 selectWord(bview, loc);
2303                 return selection.set();
2304         }
2305         return false;
2306 }
2307
2308
2309 // This function is only used by the spellchecker for NextWord().
2310 // It doesn't handle LYX_ACCENTs and probably never will.
2311 string const LyXText::selectNextWordToSpellcheck(BufferView * bview,
2312                                                  float & value) const
2313 {
2314         if (the_locking_inset) {
2315                 string str = the_locking_inset->selectNextWordToSpellcheck(bview, value);
2316                 if (!str.empty()) {
2317                         value += float(cursor.y())/float(height);
2318                         return str;
2319                 }
2320 #warning Dekel please have a look on this one RTL? (Jug)
2321 #warning DEKEL!
2322                 // we have to go on checking so move cusor to the right
2323                 if (cursor.pos() == cursor.par()->size()) {
2324                         if (!cursor.par()->next())
2325                                 return str;
2326                         cursor.par(cursor.par()->next());
2327                         cursor.pos(0);
2328                 } else
2329                         cursor.pos(cursor.pos() + 1);
2330         }
2331         Paragraph * tmppar = cursor.par();
2332
2333         // If this is not the very first word, skip rest of
2334         // current word because we are probably in the middle
2335         // of a word if there is text here.
2336         if (cursor.pos() || cursor.par()->previous()) {
2337                 while (cursor.pos() < cursor.par()->size()
2338                        && cursor.par()->isLetter(cursor.pos()))
2339                         cursor.pos(cursor.pos() + 1);
2340         }
2341
2342         // Now, skip until we have real text (will jump paragraphs)
2343         while ((cursor.par()->size() > cursor.pos()
2344                && (!cursor.par()->isLetter(cursor.pos()))
2345                && (!cursor.par()->isInset(cursor.pos()) ||
2346                            !cursor.par()->getInset(cursor.pos())->allowSpellcheck()))
2347                || (cursor.par()->size() == cursor.pos()
2348                    && cursor.par()->next()))
2349         {
2350                 if (cursor.pos() == cursor.par()->size()) {
2351                         cursor.par(cursor.par()->next());
2352                         cursor.pos(0);
2353                 } else
2354                         cursor.pos(cursor.pos() + 1);
2355         }
2356
2357         // now check if we hit an inset so it has to be a inset containing text!
2358         if (cursor.pos() < cursor.par()->size() &&
2359             cursor.par()->isInset(cursor.pos()))
2360         {
2361                 // lock the inset!
2362                 cursor.par()->getInset(cursor.pos())->edit(bview);
2363                 // now call us again to do the above trick
2364                 // but obviously we have to start from down below ;)
2365                 return bview->text->selectNextWordToSpellcheck(bview, value);
2366         }
2367
2368         // Update the value if we changed paragraphs
2369         if (cursor.par() != tmppar){
2370                 setCursor(bview, cursor.par(), cursor.pos());
2371                 value = float(cursor.y())/float(height);
2372         }
2373
2374         // Start the selection from here
2375         selection.cursor = cursor;
2376
2377         // and find the end of the word (insets like optional hyphens
2378         // and ligature break are part of a word)
2379         while (cursor.pos() < cursor.par()->size()
2380                && (cursor.par()->isLetter(cursor.pos())))
2381                 cursor.pos(cursor.pos() + 1);
2382
2383         // Finally, we copy the word to a string and return it
2384         string str;
2385         if (selection.cursor.pos() < cursor.pos()) {
2386                 pos_type i;
2387                 for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
2388                         if (!cursor.par()->isInset(i))
2389                                 str += cursor.par()->getChar(i);
2390                 }
2391         }
2392         return str;
2393 }
2394
2395
2396 // This one is also only for the spellchecker
2397 void LyXText::selectSelectedWord(BufferView * bview)
2398 {
2399         if (the_locking_inset) {
2400                 the_locking_inset->selectSelectedWord(bview);
2401                 return;
2402         }
2403         // move cursor to the beginning
2404         setCursor(bview, selection.cursor.par(), selection.cursor.pos());
2405
2406         // set the sel cursor
2407         selection.cursor = cursor;
2408
2409         // now find the end of the word
2410         while (cursor.pos() < cursor.par()->size()
2411                && (cursor.par()->isLetter(cursor.pos())))
2412                 cursor.pos(cursor.pos() + 1);
2413
2414         setCursor(bview, cursor.par(), cursor.pos());
2415
2416         // finally set the selection
2417         setSelection(bview);
2418 }
2419
2420
2421 /* -------> Delete from cursor up to the end of the current or next word. */
2422 void LyXText::deleteWordForward(BufferView * bview)
2423 {
2424         if (!cursor.par()->size())
2425                 cursorRight(bview);
2426         else {
2427                 LyXCursor tmpcursor = cursor;
2428                 tmpcursor.row(0); // ??
2429                 selection.set(true); // to avoid deletion
2430                 cursorRightOneWord(bview);
2431                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2432                 selection.cursor = cursor;
2433                 cursor = tmpcursor;
2434                 setSelection(bview);
2435
2436                 /* -----> Great, CutSelection() gets rid of multiple spaces. */
2437                 cutSelection(bview, true, false);
2438         }
2439 }
2440
2441
2442 /* -------> Delete from cursor to start of current or prior word. */
2443 void LyXText::deleteWordBackward(BufferView * bview)
2444 {
2445        if (!cursor.par()->size())
2446                cursorLeft(bview);
2447        else {
2448                LyXCursor tmpcursor = cursor;
2449                tmpcursor.row(0); // ??
2450                selection.set(true); // to avoid deletion
2451                cursorLeftOneWord(bview);
2452                setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2453                selection.cursor = cursor;
2454                cursor = tmpcursor;
2455                setSelection(bview);
2456                cutSelection(bview, true, false);
2457        }
2458 }
2459
2460
2461 /* -------> Kill to end of line. */
2462 void LyXText::deleteLineForward(BufferView * bview)
2463 {
2464         if (!cursor.par()->size())
2465                 // Paragraph is empty, so we just go to the right
2466                 cursorRight(bview);
2467         else {
2468                 LyXCursor tmpcursor = cursor;
2469                 // We can't store the row over a regular setCursor
2470                 // so we set it to 0 and reset it afterwards.
2471                 tmpcursor.row(0); // ??
2472                 selection.set(true); // to avoid deletion
2473                 cursorEnd(bview);
2474                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2475                 selection.cursor = cursor;
2476                 cursor = tmpcursor;
2477                 setSelection(bview);
2478                 // What is this test for ??? (JMarc)
2479                 if (!selection.set()) {
2480                         deleteWordForward(bview);
2481                 } else {
2482                         cutSelection(bview, true, false);
2483                 }
2484         }
2485 }
2486
2487
2488 // Change the case of a word at cursor position.
2489 // This function directly manipulates Paragraph::text because there
2490 // is no Paragraph::SetChar currently. I did what I could to ensure
2491 // that it is correct. I guess part of it should be moved to
2492 // Paragraph, but it will have to change for 1.1 anyway. At least
2493 // it does not access outside of the allocated array as the older
2494 // version did. (JMarc)
2495 void LyXText::changeCase(BufferView * bview, LyXText::TextCase action)
2496 {
2497         LyXCursor from;
2498         LyXCursor to;
2499
2500         if (selection.set()) {
2501                 from = selection.start;
2502                 to = selection.end;
2503         } else {
2504                 getWord(from, to, PARTIAL_WORD);
2505                 setCursor(bview, to.par(), to.pos() + 1);
2506         }
2507
2508         changeRegionCase(bview, from, to, action);
2509 }
2510
2511
2512 void LyXText::changeRegionCase(BufferView * bview,
2513                                LyXCursor const & from,
2514                                LyXCursor const & to,
2515                                LyXText::TextCase action)
2516 {
2517         lyx::Assert(from <= to);
2518
2519         setUndo(bview, Undo::FINISH,
2520                 from.par(), to.par()->next());
2521
2522         pos_type pos = from.pos();
2523         Paragraph * par = from.par();
2524
2525         while (par && (pos != to.pos() || par != to.par())) {
2526                 unsigned char c = par->getChar(pos);
2527                 if (!IsInsetChar(c) && !IsHfillChar(c)) {
2528                         switch (action) {
2529                         case text_lowercase:
2530                                 c = lowercase(c);
2531                                 break;
2532                         case text_capitalization:
2533                                 c = uppercase(c);
2534                                 action = text_lowercase;
2535                                 break;
2536                         case text_uppercase:
2537                                 c = uppercase(c);
2538                                 break;
2539                         }
2540                 }
2541                 par->setChar(pos, c);
2542                 checkParagraph(bview, par, pos);
2543
2544                 ++pos;
2545                 if (pos == par->size()) {
2546                         par = par->next();
2547                         pos = 0;
2548                 }
2549         }
2550         if (to.row() != from.row()) {
2551                 refresh_y = from.y() - from.row()->baseline();
2552                 refresh_row = from.row();
2553                 status(bview, LyXText::NEED_MORE_REFRESH);
2554         }
2555 }
2556
2557
2558 void LyXText::transposeChars(BufferView & bview)
2559 {
2560         Paragraph * tmppar = cursor.par();
2561
2562         setUndo(&bview, Undo::FINISH,
2563                 tmppar, tmppar->next());
2564
2565         pos_type tmppos = cursor.pos();
2566
2567         // First decide if it is possible to transpose at all
2568
2569         // We are at the beginning of a paragraph.
2570         if (tmppos == 0) return;
2571
2572         // We are at the end of a paragraph.
2573         if (tmppos == tmppar->size() - 1) return;
2574
2575         unsigned char c1 = tmppar->getChar(tmppos);
2576         unsigned char c2 = tmppar->getChar(tmppos - 1);
2577
2578         if (c1 != Paragraph::META_INSET
2579             && c2 != Paragraph::META_INSET) {
2580                 tmppar->setChar(tmppos, c2);
2581                 tmppar->setChar(tmppos - 1, c1);
2582         }
2583         // We should have an implementation that handles insets
2584         // as well, but that will have to come later. (Lgb)
2585         checkParagraph(const_cast<BufferView*>(&bview), tmppar, tmppos);
2586 }
2587
2588
2589 void LyXText::Delete(BufferView * bview)
2590 {
2591         // this is a very easy implementation
2592
2593         LyXCursor old_cursor = cursor;
2594         int const old_cur_par_id = old_cursor.par()->id();
2595         int const old_cur_par_prev_id = old_cursor.par()->previous() ?
2596                 old_cursor.par()->previous()->id() : 0;
2597
2598         // just move to the right
2599         cursorRight(bview);
2600
2601         // CHECK Look at the comment here.
2602         // This check is not very good...
2603         // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
2604         // and that can very well delete the par or par->previous in
2605         // old_cursor. Will a solution where we compare paragraph id's
2606         //work better?
2607         if ((cursor.par()->previous() ? cursor.par()->previous()->id() : 0)
2608             == old_cur_par_prev_id
2609             && cursor.par()->id() != old_cur_par_id) {
2610                 // delete-empty-paragraph-mechanism has done it
2611                 return;
2612         }
2613
2614         // if you had success make a backspace
2615         if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
2616                 LyXCursor tmpcursor = cursor;
2617                 // to make sure undo gets the right cursor position
2618                 cursor = old_cursor;
2619                 setUndo(bview, Undo::DELETE,
2620                         cursor.par(), cursor.par()->next());
2621                 cursor = tmpcursor;
2622                 backspace(bview);
2623         }
2624 }
2625
2626
2627 void LyXText::backspace(BufferView * bview)
2628 {
2629         // Get the font that is used to calculate the baselineskip
2630         pos_type lastpos = cursor.par()->size();
2631         LyXFont rawparfont =
2632                 cursor.par()->getFontSettings(bview->buffer()->params,
2633                                               lastpos - 1);
2634
2635         if (cursor.pos() == 0) {
2636                 // The cursor is at the beginning of a paragraph,
2637                 // so the the backspace will collapse two paragraphs into one.
2638
2639                 // we may paste some paragraphs
2640
2641                 // is it an empty paragraph?
2642
2643                 if ((lastpos == 0
2644                      || (lastpos == 1 && cursor.par()->isSeparator(0)))) {
2645                         // This is an empty paragraph and we delete it just by moving the cursor one step
2646                         // left and let the DeleteEmptyParagraphMechanism handle the actual deletion
2647                         // of the paragraph.
2648
2649                         if (cursor.par()->previous()) {
2650                                 Paragraph * tmppar = cursor.par()->previous();
2651                                 if (cursor.par()->getLayout() == tmppar->getLayout()
2652                                     && cursor.par()->getAlign() == tmppar->getAlign()) {
2653                                         // Inherit bottom DTD from the paragraph below.
2654                                         // (the one we are deleting)
2655                                         tmppar->params().lineBottom(cursor.par()->params().lineBottom());
2656                                         tmppar->params().spaceBottom(cursor.par()->params().spaceBottom());
2657                                         tmppar->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
2658                                 }
2659
2660                                 cursorLeft(bview);
2661
2662                                 // the layout things can change the height of a row !
2663                                 int const tmpheight = cursor.row()->height();
2664                                 setHeightOfRow(bview, cursor.row());
2665                                 if (cursor.row()->height() != tmpheight) {
2666                                         refresh_y = cursor.y() - cursor.row()->baseline();
2667                                         refresh_row = cursor.row();
2668                                         status(bview, LyXText::NEED_MORE_REFRESH);
2669                                 }
2670                                 return;
2671                         }
2672                 }
2673
2674                 if (cursor.par()->previous()) {
2675                         setUndo(bview, Undo::DELETE,
2676                                 cursor.par()->previous(), cursor.par()->next());
2677                 }
2678
2679                 Paragraph * tmppar = cursor.par();
2680                 Row * tmprow = cursor.row();
2681
2682                 // We used to do cursorLeftIntern() here, but it is
2683                 // not a good idea since it triggers the auto-delete
2684                 // mechanism. So we do a cursorLeftIntern()-lite,
2685                 // without the dreaded mechanism. (JMarc)
2686                 if (cursor.par()->previous()) {
2687                         // steps into the above paragraph.
2688                         setCursorIntern(bview, cursor.par()->previous(),
2689                                         cursor.par()->previous()->size(),
2690                                         false);
2691                 }
2692
2693                 /* Pasting is not allowed, if the paragraphs have different
2694                    layout. I think it is a real bug of all other
2695                    word processors to allow it. It confuses the user.
2696                    Even so with a footnote paragraph and a non-footnote
2697                    paragraph. I will not allow pasting in this case,
2698                    because the user would be confused if the footnote behaves
2699                    different wether it is open or closed.
2700
2701                    Correction: Pasting is always allowed with standard-layout
2702                 */
2703                 if (cursor.par() != tmppar
2704                     && (cursor.par()->getLayout() == tmppar->getLayout()
2705                         || tmppar->getLayout() == 0 /*standard*/)
2706                     && cursor.par()->getAlign() == tmppar->getAlign())
2707                 {
2708                         removeParagraph(tmprow);
2709                         removeRow(tmprow);
2710                         cursor.par()->pasteParagraph(bview->buffer()->params);
2711
2712                         if (!cursor.pos() || !cursor.par()->isSeparator(cursor.pos() - 1))
2713                                 ; //cursor.par()->insertChar(cursor.pos(), ' ');
2714                         // strangely enough it seems that commenting out the line above removes
2715                         // most or all of the segfaults. I will however also try to move the
2716                         // two Remove... lines in front of the PasteParagraph too.
2717                         else
2718                                 if (cursor.pos())
2719                                         cursor.pos(cursor.pos() - 1);
2720
2721                         status(bview, LyXText::NEED_MORE_REFRESH);
2722                         refresh_row = cursor.row();
2723                         refresh_y = cursor.y() - cursor.row()->baseline();
2724
2725                         // remove the lost paragraph
2726                         // This one is not safe, since the paragraph that the tmprow and the
2727                         // following rows belong to has been deleted by the PasteParagraph
2728                         // above. The question is... could this be moved in front of the
2729                         // PasteParagraph?
2730                         //RemoveParagraph(tmprow);
2731                         //RemoveRow(tmprow);
2732
2733                         // This rebuilds the rows.
2734                         appendParagraph(bview, cursor.row());
2735                         updateCounters(bview, cursor.row());
2736
2737                         // the row may have changed, block, hfills etc.
2738                         setCursor(bview, cursor.par(), cursor.pos(), false);
2739                 }
2740         } else {
2741                 /* this is the code for a normal backspace, not pasting
2742                  * any paragraphs */
2743                 setUndo(bview, Undo::DELETE,
2744                         cursor.par(), cursor.par()->next());
2745                 // We used to do cursorLeftIntern() here, but it is
2746                 // not a good idea since it triggers the auto-delete
2747                 // mechanism. So we do a cursorLeftIntern()-lite,
2748                 // without the dreaded mechanism. (JMarc)
2749                 setCursorIntern(bview, cursor.par(), cursor.pos()- 1,
2750                                 false, cursor.boundary());
2751
2752                 // some insets are undeletable here
2753                 if (cursor.par()->isInset(cursor.pos())) {
2754                         if (!cursor.par()->getInset(cursor.pos())->deletable())
2755                                 return;
2756                         // force complete redo when erasing display insets
2757                         // this is a cruel method but safe..... Matthias
2758                         if (cursor.par()->getInset(cursor.pos())->display() ||
2759                             cursor.par()->getInset(cursor.pos())->needFullRow()) {
2760                                 cursor.par()->erase(cursor.pos());
2761                                 redoParagraph(bview);
2762                                 return;
2763                         }
2764                 }
2765
2766                 Row * row = cursor.row();
2767                 int y = cursor.y() - row->baseline();
2768                 pos_type z;
2769                 /* remember that a space at the end of a row doesnt count
2770                  * when calculating the fill */
2771                 if (cursor.pos() < rowLast(row) ||
2772                     !cursor.par()->isLineSeparator(cursor.pos())) {
2773                         row->fill(row->fill() + singleWidth(bview,
2774                                                             cursor.par(),
2775                                                             cursor.pos()));
2776                 }
2777
2778                 /* some special code when deleting a newline. This is similar
2779                  * to the behavior when pasting paragraphs */
2780                 if (cursor.pos() && cursor.par()->isNewline(cursor.pos())) {
2781                         cursor.par()->erase(cursor.pos());
2782                         // refresh the positions
2783                         Row * tmprow = row;
2784                         while (tmprow->next() && tmprow->next()->par() == row->par()) {
2785                                 tmprow = tmprow->next();
2786                                 tmprow->pos(tmprow->pos() - 1);
2787                         }
2788                         if (cursor.par()->isLineSeparator(cursor.pos() - 1))
2789                                 cursor.pos(cursor.pos() - 1);
2790
2791                         if (cursor.pos() < cursor.par()->size()
2792                             && !cursor.par()->isSeparator(cursor.pos())) {
2793                                 cursor.par()->insertChar(cursor.pos(), ' ');
2794                                 setCharFont(bview->buffer(), cursor.par(),
2795                                             cursor.pos(), current_font);
2796                                 // refresh the positions
2797                                 tmprow = row;
2798                                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
2799                                         tmprow = tmprow->next();
2800                                         tmprow->pos(tmprow->pos() + 1);
2801                                 }
2802                         }
2803                 } else {
2804                         cursor.par()->erase(cursor.pos());
2805
2806                         // refresh the positions
2807                         Row * tmprow = row;
2808                         while (tmprow->next()
2809                                && tmprow->next()->par() == row->par()) {
2810                                 tmprow = tmprow->next();
2811                                 tmprow->pos(tmprow->pos() - 1);
2812                         }
2813
2814                         // delete newlines at the beginning of paragraphs
2815                         while (cursor.par()->size() &&
2816                                cursor.par()->isNewline(cursor.pos()) &&
2817                                cursor.pos() == beginningOfMainBody(bview->buffer(),
2818                                                                    cursor.par())) {
2819                                 cursor.par()->erase(cursor.pos());
2820                                 // refresh the positions
2821                                 tmprow = row;
2822                                 while (tmprow->next() &&
2823                                        tmprow->next()->par() == row->par()) {
2824                                         tmprow = tmprow->next();
2825                                         tmprow->pos(tmprow->pos() - 1);
2826                                 }
2827                         }
2828                 }
2829
2830                 // is there a break one row above
2831                 if (row->previous() && row->previous()->par() == row->par()) {
2832                         z = nextBreakPoint(bview, row->previous(),
2833                                            workWidth(bview));
2834                         if (z >= row->pos()) {
2835                                 row->pos(z + 1);
2836
2837                                 Row * tmprow = row->previous();
2838
2839                                 // maybe the current row is now empty
2840                                 if (row->pos() >= row->par()->size()) {
2841                                         // remove it
2842                                         removeRow(row);
2843                                         need_break_row = 0;
2844                                 } else {
2845                                         breakAgainOneRow(bview, row);
2846                                         if (row->next() && row->next()->par() == row->par())
2847                                                 need_break_row = row->next();
2848                                         else
2849                                                 need_break_row = 0;
2850                                 }
2851
2852                                 // set the dimensions of the row above
2853                                 y -= tmprow->height();
2854                                 tmprow->fill(fill(bview, tmprow,
2855                                                   workWidth(bview)));
2856                                 setHeightOfRow(bview, tmprow);
2857
2858                                 refresh_y = y;
2859                                 refresh_row = tmprow;
2860                                 status(bview, LyXText::NEED_MORE_REFRESH);
2861                                 setCursor(bview, cursor.par(), cursor.pos(),
2862                                           false, cursor.boundary());
2863                                 //current_font = rawtmpfont;
2864                                 //real_current_font = realtmpfont;
2865                                 // check, whether the last character's font has changed.
2866                                 if (rawparfont !=
2867                                     cursor.par()->getFontSettings(bview->buffer()->params,
2868                                                                   cursor.par()->size() - 1))
2869                                         redoHeightOfParagraph(bview, cursor);
2870                                 return;
2871                         }
2872                 }
2873
2874                 // break the cursor row again
2875                 if (row->next() && row->next()->par() == row->par() &&
2876                     (rowLast(row) == row->par()->size() - 1 ||
2877                      nextBreakPoint(bview, row, workWidth(bview)) != rowLast(row))) {
2878
2879                         /* it can happen that a paragraph loses one row
2880                          * without a real breakup. This is when a word
2881                          * is to long to be broken. Well, I don t care this
2882                          * hack ;-) */
2883                         if (rowLast(row) == row->par()->size() - 1)
2884                                 removeRow(row->next());
2885
2886                         refresh_y = y;
2887                         refresh_row = row;
2888                         status(bview, LyXText::NEED_MORE_REFRESH);
2889
2890                         breakAgainOneRow(bview, row);
2891                         // will the cursor be in another row now?
2892                         if (row->next() && row->next()->par() == row->par() &&
2893                             rowLast(row) <= cursor.pos()) {
2894                                 row = row->next();
2895                                 breakAgainOneRow(bview, row);
2896                         }
2897
2898                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2899
2900                         if (row->next() && row->next()->par() == row->par())
2901                                 need_break_row = row->next();
2902                         else
2903                                 need_break_row = 0;
2904                 } else  {
2905                         // set the dimensions of the row
2906                         row->fill(fill(bview, row, workWidth(bview)));
2907                         int const tmpheight = row->height();
2908                         setHeightOfRow(bview, row);
2909                         if (tmpheight == row->height())
2910                                 status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
2911                         else
2912                                 status(bview, LyXText::NEED_MORE_REFRESH);
2913                         refresh_y = y;
2914                         refresh_row = row;
2915                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2916                 }
2917         }
2918
2919         // current_font = rawtmpfont;
2920         // real_current_font = realtmpfont;
2921
2922         if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
2923             != cursor.boundary())
2924                 setCursor(bview, cursor.par(), cursor.pos(), false,
2925                           !cursor.boundary());
2926
2927         lastpos = cursor.par()->size();
2928         if (cursor.pos() == lastpos)
2929                 setCurrentFont(bview);
2930
2931         // check, whether the last characters font has changed.
2932         if (rawparfont !=
2933             cursor.par()->getFontSettings(bview->buffer()->params, lastpos - 1)) {
2934                 redoHeightOfParagraph(bview, cursor);
2935         } else {
2936                 // now the special right address boxes
2937                 if (textclasslist.Style(bview->buffer()->params.textclass,
2938                                         cursor.par()->getLayout()).margintype == MARGIN_RIGHT_ADDRESS_BOX) {
2939                         redoDrawingOfParagraph(bview, cursor);
2940                 }
2941         }
2942 }
2943
2944
2945 bool LyXText::paintRowBackground(DrawRowParams & p)
2946 {
2947         bool clear_area = true;
2948         Inset * inset = 0;
2949         LyXFont font(LyXFont::ALL_SANE);
2950
2951         pos_type const last = rowLastPrintable(p.row);
2952
2953         if (!p.bv->screen()->forceClear() && last == p.row->pos()
2954                 && p.row->par()->isInset(p.row->pos())) {
2955                 inset = p.row->par()->getInset(p.row->pos());
2956                 if (inset) {
2957                         clear_area = inset->doClearArea();
2958                 }
2959         }
2960
2961         if (p.cleared) {
2962                 return true;
2963         }
2964
2965         if (clear_area) {
2966                 int const x = p.xo;
2967                 int const y = p.yo < 0 ? 0 : p.yo;
2968                 int const h = p.yo < 0 ? p.row->height() + p.yo : p.row->height();
2969                 p.pain->fillRectangle(x, y, p.width, h, backgroundColor());
2970                 return true;
2971         }
2972
2973         if (inset == 0)
2974                 return false;
2975
2976         int h = p.row->baseline() - inset->ascent(p.bv, font);
2977
2978         // first clear the whole row above the inset!
2979         if (h > 0) {
2980                 p.pain->fillRectangle(p.xo, p.yo, p.width, h, backgroundColor());
2981         }
2982
2983         // clear the space below the inset!
2984         h += inset->ascent(p.bv, font) + inset->descent(p.bv, font);
2985         if ((p.row->height() - h) > 0) {
2986                 p.pain->fillRectangle(p.xo, p.yo + h,
2987                         p.width, p.row->height() - h, backgroundColor());
2988         }
2989
2990         // clear the space behind the inset, if needed
2991         if (!inset->display() && !inset->needFullRow()) {
2992                 int const xp = int(p.x) + inset->width(p.bv, font);
2993                 if (p.width - xp > 0) {
2994                         p.pain->fillRectangle(xp, p.yo, p.width - xp,
2995                                 p.row->height(), backgroundColor());
2996                 }
2997         }
2998
2999         return false;
3000 }
3001
3002
3003 void LyXText::paintRowSelection(DrawRowParams & p)
3004 {
3005         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3006
3007         // the current selection
3008         int const startx = selection.start.x();
3009         int const endx = selection.end.x();
3010         int const starty = selection.start.y();
3011         int const endy = selection.end.y();
3012         Row const * startrow = selection.start.row();
3013         Row const * endrow = selection.end.row();
3014
3015         Row * row = p.row;
3016
3017         if (bidi_same_direction) {
3018                 int x;
3019                 int y = p.yo;
3020                 int w;
3021                 int h = row->height();
3022
3023                 if (startrow == row && endrow == row) {
3024                         if (startx < endx) {
3025                                 x = p.xo + startx;
3026                                 w = endx - startx;
3027                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3028                         } else {
3029                                 x = p.xo + endx;
3030                                 w = startx - endx;
3031                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3032                         }
3033                 } else if (startrow == row) {
3034                         int const x = (is_rtl) ? p.xo : (p.xo + startx);
3035                         int const w = (is_rtl) ? startx : (p.width - startx);
3036                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3037                 } else if (endrow == row) {
3038                         int const x = (is_rtl) ? (p.xo + endx) : p.xo;
3039                         int const w = (is_rtl) ? (p.width - endx) : endx;
3040                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3041                 } else if (p.y > starty && p.y < endy) {
3042                         p.pain->fillRectangle(p.xo, y, p.width, h, LColor::selection);
3043                 }
3044                 return;
3045         } else if (startrow != row && endrow != row) {
3046                 int w = p.width;
3047                 int h = row->height();
3048                 if (p.y > starty && p.y < endy) {
3049                         p.pain->fillRectangle(p.xo, p.yo, w, h, LColor::selection);
3050                 }
3051                 return;
3052         }
3053
3054         if (!((startrow != row && !is_rtl) || (endrow != row && is_rtl))) {
3055                 return;
3056         }
3057
3058         float tmpx = p.x;
3059
3060         p.pain->fillRectangle(p.xo, p.yo, int(p.x), row->height(), LColor::selection);
3061
3062         Buffer const * buffer = p.bv->buffer();
3063         Paragraph * par = row->par();
3064         pos_type main_body = beginningOfMainBody(buffer, par);
3065         pos_type const last = rowLastPrintable(row);
3066
3067         for (pos_type vpos = row->pos(); vpos <= last; ++vpos)  {
3068                 pos_type pos = vis2log(vpos);
3069                 float const old_tmpx = tmpx;
3070                 if (main_body > 0 && pos == main_body - 1) {
3071                         LyXLayout const & layout = textclasslist.Style(buffer->params.textclass,
3072                                 par->getLayout());
3073                         LyXFont const lfont = getLabelFont(buffer, par);
3074
3075
3076                         tmpx += p.label_hfill + lyxfont::width(layout.labelsep, lfont);
3077
3078                         if (par->isLineSeparator(main_body - 1))
3079                                 tmpx -= singleWidth(p.bv, par, main_body - 1);
3080                 }
3081
3082                 if (hfillExpansion(buffer, row, pos)) {
3083                         tmpx += singleWidth(p.bv, par, pos);
3084                         if (pos >= main_body)
3085                                 tmpx += p.hfill;
3086                         else
3087                                 tmpx += p.label_hfill;
3088                 }
3089
3090                 else if (par->isSeparator(pos)) {
3091                         tmpx += singleWidth(p.bv, par, pos);
3092                         if (pos >= main_body)
3093                                 tmpx += p.separator;
3094                 } else {
3095                         tmpx += singleWidth(p.bv, par, pos);
3096                 }
3097
3098                 if ((startrow != row || selection.start.pos() <= pos) &&
3099                         (endrow != row || pos < selection.end.pos())) {
3100                         // Here we do not use p.x as p.xo was added to p.x.
3101                         p.pain->fillRectangle(int(old_tmpx), p.yo,
3102                                 int(tmpx - old_tmpx + 1),
3103                                 row->height(), LColor::selection);
3104                 }
3105
3106                 if ((startrow != row && is_rtl) || (endrow != row && !is_rtl)) {
3107                         p.pain->fillRectangle(p.xo + int(tmpx),
3108                                 p.yo, int(p.bv->workWidth() - tmpx),
3109                                 row->height(), LColor::selection);
3110                 }
3111         }
3112 }
3113
3114
3115 void LyXText::paintRowAppendix(DrawRowParams & p)
3116 {
3117         // FIXME: can be just p.width ?
3118         int const ww = p.bv->workWidth();
3119         Paragraph * firstpar = p.row->par();
3120
3121         if (firstpar->params().appendix()) {
3122                 p.pain->line(1, p.yo, 1, p.yo + p.row->height(), LColor::appendixline);
3123                 p.pain->line(ww - 2, p.yo, ww - 2, p.yo + p.row->height(), LColor::appendixline);
3124         }
3125 }
3126
3127
3128 void LyXText::paintRowDepthBar(DrawRowParams & p)
3129 {
3130         Paragraph::depth_type const depth = p.row->par()->getDepth();
3131
3132         if (depth <= 0)
3133                 return;
3134
3135         Paragraph::depth_type prev_depth = 0;
3136         if (p.row->previous())
3137                 prev_depth = p.row->previous()->par()->getDepth();
3138         Paragraph::depth_type next_depth = 0;
3139         if (p.row->next())
3140                 next_depth = p.row->next()->par()->getDepth();
3141
3142         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
3143                 int const x = (LYX_PAPER_MARGIN / 5) * i + p.xo;
3144                 int const h = p.yo + p.row->height() - 1 - (i - next_depth - 1) * 3;
3145
3146                 p.pain->line(x, p.yo, x, h, LColor::depthbar);
3147
3148                 int const w = LYX_PAPER_MARGIN / 5;
3149
3150                 if (i > prev_depth) {
3151                         p.pain->fillRectangle(x, p.yo, w, 2, LColor::depthbar);
3152                 }
3153                 if (i > next_depth) {
3154                         p.pain->fillRectangle(x, h, w, 2, LColor::depthbar);
3155                 }
3156         }
3157 }
3158
3159
3160 int LyXText::getLengthMarkerHeight(BufferView * bv, VSpace const & vsp) const
3161 {
3162         if (vsp.kind() != VSpace::LENGTH) {
3163                 return int(vsp.inPixels(bv));
3164         }
3165
3166         int const space_size = int(vsp.inPixels(bv));
3167         int const arrow_size = 10;
3168
3169         LyXFont font;
3170         font.decSize();
3171         int const min_size = 2 * arrow_size + 10
3172                 + lyxfont::maxAscent(font)
3173                 + lyxfont::maxDescent(font);
3174
3175         return std::max(min_size, space_size);
3176 }
3177
3178
3179 int LyXText::drawLengthMarker(DrawRowParams & p, string const & prefix,
3180         VSpace const & vsp, int start)
3181 {
3182         string const str(prefix
3183                 + " (" + vsp.asLyXCommand() + ")");
3184
3185         int const arrow_size = 10;
3186
3187         int const size = getLengthMarkerHeight(p.bv, vsp);
3188
3189         // first the string
3190         int w = 0;
3191         int a = 0;
3192         int d = 0;
3193
3194         LyXFont font;
3195         font.setColor(LColor::added_space).decSize();
3196         lyxfont::rectText(str, font, w, a, d);
3197
3198         int const end = start + size;
3199
3200         p.pain->rectText(p.xo + 2 * arrow_size + 5,
3201                 start + ((end - start) / 2) + d,
3202                 str, font,
3203                 backgroundColor(),
3204                 backgroundColor());
3205
3206         // adding or removing space
3207         bool const added = !(vsp.length().len().value() < 0.0);
3208
3209         int const leftx = p.xo;
3210         int const midx = leftx + arrow_size;
3211         int const rightx = midx + arrow_size;
3212
3213         // top arrow
3214         int const ty1 = added ? (start + arrow_size) : start;
3215         int const ty2 = added ? start : (start + arrow_size);
3216
3217         p.pain->line(leftx, ty1, midx, ty2, LColor::added_space);
3218         p.pain->line(midx, ty2, rightx, ty1, LColor::added_space);
3219
3220         // bottom arrow
3221         int const by1 = added ? (end - arrow_size) : end;
3222         int const by2 = added ? end : (end - arrow_size);
3223
3224         p.pain->line(leftx, by1, midx, by2, LColor::added_space);
3225         p.pain->line(midx, by2, rightx, by1, LColor::added_space);
3226
3227         // joining line
3228         p.pain->line(midx, ty2, midx, by2, LColor::added_space);
3229
3230         return size;
3231 }
3232
3233
3234 void LyXText::paintFirstRow(DrawRowParams & p)
3235 {
3236         Paragraph * par = p.row->par();
3237         ParagraphParameters const & parparams = par->params();
3238
3239         // start of appendix?
3240         if (parparams.startOfAppendix()) {
3241                 p.pain->line(1, p.yo, p.width - 2, p.yo, LColor::appendixline);
3242         }
3243
3244         int y_top = 0;
3245
3246         // think about the margins
3247         if (!p.row->previous() && bv_owner)
3248                 y_top += LYX_PAPER_MARGIN;
3249
3250         // draw a top pagebreak
3251         if (parparams.pagebreakTop()) {
3252                 int const y = p.yo + y_top + 2*defaultHeight();
3253                 p.pain->line(p.xo, y, p.xo + p.width, y,
3254                         LColor::pagebreak, Painter::line_onoffdash);
3255
3256                 int w = 0;
3257                 int a = 0;
3258                 int d = 0;
3259
3260                 LyXFont pb_font;
3261                 pb_font.setColor(LColor::pagebreak).decSize();
3262                 lyxfont::rectText(_("Page Break (top)"), pb_font, w, a, d);
3263                 p.pain->rectText((p.width - w)/2, y + d,
3264                               _("Page Break (top)"), pb_font,
3265                               backgroundColor(),
3266                               backgroundColor());
3267                 y_top += 3 * defaultHeight();
3268         }
3269
3270         // draw a vfill top
3271         if (parparams.spaceTop().kind() == VSpace::VFILL) {
3272                 int const y1 = p.yo + y_top + 3 * defaultHeight();
3273                 int const y2 = p.yo + 2 + y_top;
3274
3275                 p.pain->line(0, y1, LYX_PAPER_MARGIN, y1, LColor::added_space);
3276
3277                 p.pain->line(0, y2, LYX_PAPER_MARGIN, y2, LColor::added_space);
3278
3279                 int const x = LYX_PAPER_MARGIN / 2;
3280
3281                 p.pain->line(x, y2, x, y1, LColor::added_space);
3282
3283                 y_top += 3 * defaultHeight();
3284                 y_top += int(parparams.spaceTop().inPixels(p.bv));
3285         } else if (parparams.spaceTop().kind() == VSpace::LENGTH) {
3286                 y_top += drawLengthMarker(p, _("Space above"),
3287                         parparams.spaceTop(), p.yo + y_top);
3288         } else {
3289                 y_top += int(parparams.spaceTop().inPixels(p.bv));
3290         }
3291
3292         Buffer const * buffer = p.bv->buffer();
3293
3294         LyXLayout const & layout =
3295                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3296
3297         // think about the parskip
3298         // some parskips VERY EASY IMPLEMENTATION
3299         if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
3300                 if (par->previous()) {
3301                         if (layout.latextype == LATEX_PARAGRAPH
3302                                 && !par->getDepth()) {
3303                                 y_top += buffer->params.getDefSkip().inPixels(p.bv);
3304                         } else {
3305                                 LyXLayout const & playout =
3306                                         textclasslist.Style(buffer->params.textclass,
3307                                                 par->previous()->getLayout());
3308                                 if (playout.latextype == LATEX_PARAGRAPH
3309                                         && !par->previous()->getDepth()) {
3310                                         // is it right to use defskip here, too? (AS)
3311                                         y_top += buffer->params.getDefSkip().inPixels(p.bv);
3312                                 }
3313                         }
3314                 }
3315         }
3316
3317         int const ww = p.bv->workWidth();
3318
3319         // draw a top line
3320         if (parparams.lineTop()) {
3321                 LyXFont font(LyXFont::ALL_SANE);
3322                 int const asc = lyxfont::ascent('x', getFont(buffer, par, 0));
3323
3324                 y_top += asc;
3325
3326                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3327                 int const xp = static_cast<int>(inset_owner ? p.x : 0);
3328                 p.pain->line(xp, p.yo + y_top, w, p.yo + y_top,
3329                         LColor::topline, Painter::line_solid,
3330                         Painter::line_thick);
3331
3332                 y_top += asc;
3333         }
3334
3335         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3336
3337         // should we print a label?
3338         if (layout.labeltype >= LABEL_STATIC
3339             && (layout.labeltype != LABEL_STATIC
3340                 || layout.latextype != LATEX_ENVIRONMENT
3341                 || par->isFirstInSequence())) {
3342
3343                 LyXFont font = getLabelFont(buffer, par);
3344                 if (!par->getLabelstring().empty()) {
3345                         float x = p.x;
3346                         string const str = par->getLabelstring();
3347
3348                         // this is special code for the chapter layout. This is
3349                         // printed in an extra row and has a pagebreak at
3350                         // the top.
3351                         if (layout.labeltype == LABEL_COUNTER_CHAPTER) {
3352                                 if (buffer->params.secnumdepth >= 0) {
3353                                         float spacing_val = 1.0;
3354                                         if (!parparams.spacing().isDefault()) {
3355                                                 spacing_val = parparams.spacing().getValue();
3356                                         } else {
3357                                                 spacing_val = buffer->params.spacing.getValue();
3358                                         }
3359
3360                                         int const maxdesc =
3361                                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val)
3362                                                 + int(layout.parsep) * defaultHeight();
3363
3364                                         if (is_rtl) {
3365                                                 x = ww - leftMargin(p.bv, p.row) -
3366                                                         lyxfont::width(str, font);
3367                                         }
3368
3369                                         p.pain->text(int(x),
3370                                                 p.yo + p.row->baseline() -
3371                                                 p.row->ascent_of_text() - maxdesc,
3372                                                 str, font);
3373                                 }
3374                         } else {
3375                                 if (is_rtl) {
3376                                         x = ww - leftMargin(p.bv, p.row)
3377                                                 + lyxfont::width(layout.labelsep, font);
3378                                 } else {
3379                                         x = p.x - lyxfont::width(layout.labelsep, font)
3380                                                 - lyxfont::width(str, font);
3381                                 }
3382
3383                                 p.pain->text(int(x), p.yo + p.row->baseline(), str, font);
3384                         }
3385                 }
3386         // the labels at the top of an environment.
3387         // More or less for bibliography
3388         } else if (par->isFirstInSequence() &&
3389                 (layout.labeltype == LABEL_TOP_ENVIRONMENT ||
3390                 layout.labeltype == LABEL_BIBLIO ||
3391                 layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
3392                 LyXFont font = getLabelFont(buffer, par);
3393                 if (!par->getLabelstring().empty()) {
3394                         string const str = par->getLabelstring();
3395                         float spacing_val = 1.0;
3396                         if (!parparams.spacing().isDefault()) {
3397                                 spacing_val = parparams.spacing().getValue();
3398                         } else {
3399                                 spacing_val = buffer->params.spacing.getValue();
3400                         }
3401
3402                         int maxdesc =
3403                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val
3404                                 + (layout.labelbottomsep * defaultHeight()));
3405
3406                         float x = p.x;
3407                         if (layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
3408                                 x = ((is_rtl ? leftMargin(p.bv, p.row) : p.x)
3409                                          + ww - rightMargin(buffer, p.row) ) / 2;
3410                                 x -= lyxfont::width(str, font) / 2;
3411                         } else if (is_rtl) {
3412                                 x = ww - leftMargin(p.bv, p.row) -
3413                                         lyxfont::width(str, font);
3414                         }
3415                         p.pain->text(int(x), p.yo + p.row->baseline()
3416                                   - p.row->ascent_of_text() - maxdesc,
3417                                   str, font);
3418                 }
3419         }
3420
3421         if (layout.labeltype == LABEL_BIBLIO && par->bibkey) {
3422                 LyXFont font = getLayoutFont(buffer, par);
3423                 float x;
3424                 if (is_rtl) {
3425                         x = ww - leftMargin(p.bv, p.row)
3426                                 + lyxfont::width(layout.labelsep, font);
3427                 } else {
3428                         x = p.x - lyxfont::width(layout.labelsep, font)
3429                                 - par->bibkey->width(p.bv, font);
3430                 }
3431                 par->bibkey->draw(p.bv, font, p.yo + p.row->baseline(), x, p.cleared);
3432         }
3433 }
3434
3435
3436 void LyXText::paintLastRow(DrawRowParams & p)
3437 {
3438         Paragraph * par = p.row->par();
3439         ParagraphParameters const & parparams = par->params();
3440         int y_bottom = p.row->height();
3441
3442         // think about the margins
3443         if (!p.row->next() && bv_owner)
3444                 y_bottom -= LYX_PAPER_MARGIN;
3445
3446         int const ww = p.bv->workWidth();
3447
3448         // draw a bottom pagebreak
3449         if (parparams.pagebreakBottom()) {
3450                 LyXFont pb_font;
3451                 pb_font.setColor(LColor::pagebreak).decSize();
3452                 int const y = p.yo + y_bottom - 2 * defaultHeight();
3453
3454                 p.pain->line(p.xo, y, p.xo + p.width, y, LColor::pagebreak, Painter::line_onoffdash);
3455
3456                 int w = 0;
3457                 int a = 0;
3458                 int d = 0;
3459                 lyxfont::rectText(_("Page Break (bottom)"), pb_font, w, a, d);
3460                 p.pain->rectText((ww - w) / 2, y + d,
3461                         _("Page Break (bottom)"),
3462                         pb_font, backgroundColor(), backgroundColor());
3463
3464                 y_bottom -= 3 * defaultHeight();
3465         }
3466
3467         // draw a vfill bottom
3468         if (parparams.spaceBottom().kind() == VSpace::VFILL) {
3469                 int const x = LYX_PAPER_MARGIN / 2;
3470                 int const x2 = LYX_PAPER_MARGIN;
3471                 int const y = p.yo + y_bottom - 3 * defaultHeight();
3472                 int const y2 = p.yo + y_bottom - 2;
3473
3474                 p.pain->line(0, y, x2, y, LColor::added_space);
3475                 p.pain->line(0, y2, x2, y2, LColor::added_space);
3476                 p.pain->line(x, y, x, y2, LColor::added_space);
3477
3478                 y_bottom -= 3 * defaultHeight();
3479                 y_bottom -= int(parparams.spaceBottom().inPixels(p.bv));
3480         } else if (parparams.spaceBottom().kind() == VSpace::LENGTH) {
3481                 int const height =  getLengthMarkerHeight(p.bv, parparams.spaceBottom());
3482                 y_bottom -= drawLengthMarker(p, _("Space below"),
3483                                 parparams.spaceBottom(),
3484                                 p.yo + y_bottom - height);
3485
3486         } else {
3487                 y_bottom -= int(parparams.spaceBottom().inPixels(p.bv));
3488         }
3489
3490         Buffer const * buffer = p.bv->buffer();
3491
3492         // draw a bottom line
3493         if (parparams.lineBottom()) {
3494                 LyXFont font(LyXFont::ALL_SANE);
3495                 int const asc = lyxfont::ascent('x',
3496                         getFont(buffer, par,
3497                         max(pos_type(0), par->size() - 1)));
3498
3499                 y_bottom -= asc;
3500
3501                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3502                 int const xp = static_cast<int>(inset_owner ? p.x : 0);
3503                 int const y = p.yo + y_bottom;
3504                 p.pain->line(xp, y, w, y, LColor::topline, Painter::line_solid,
3505                           Painter::line_thick);
3506
3507                 y_bottom -= asc;
3508         }
3509
3510         pos_type const last = rowLastPrintable(p.row);
3511         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3512         int const endlabel = par->getEndLabel(buffer->params);
3513
3514         // draw an endlabel
3515         switch (endlabel) {
3516         case END_LABEL_BOX:
3517         case END_LABEL_FILLED_BOX:
3518         {
3519                 LyXFont const font = getFont(buffer, par, last);
3520                 int const size = int(0.75 * lyxfont::maxAscent(font));
3521                 int const y = (p.yo + p.row->baseline()) - size;
3522                 int x = is_rtl ? LYX_PAPER_MARGIN : ww - LYX_PAPER_MARGIN - size;
3523
3524                 if (p.row->fill() <= size)
3525                         x += (size - p.row->fill() + 1) * (is_rtl ? -1 : 1);
3526
3527                 if (endlabel == END_LABEL_BOX) {
3528                         p.pain->line(x, y, x, y + size, LColor::eolmarker);
3529                         p.pain->line(x + size, y, x + size , y + size, LColor::eolmarker);
3530                         p.pain->line(x, y, x + size, y, LColor::eolmarker);
3531                         p.pain->line(x, y + size, x + size, y + size, LColor::eolmarker);
3532                 } else {
3533                         p.pain->fillRectangle(x, y, size, size, LColor::eolmarker);
3534                 }
3535                 break;
3536         }
3537         case END_LABEL_STATIC:
3538         {
3539                 LyXFont font(LyXFont::ALL_SANE);
3540                 LyXTextClass::LayoutList::size_type layout = par->getLayout();
3541                 string const str = textclasslist.
3542                         Style(buffer->params.textclass, layout).endlabelstring();
3543                 font = getLabelFont(buffer, par);
3544                 int const x = is_rtl ?
3545                         int(p.x) - lyxfont::width(str, font)
3546                         : ww - rightMargin(buffer, p.row) - p.row->fill();
3547                 p.pain->text(x, p.yo + p.row->baseline(), str, font);
3548                 break;
3549         }
3550         case END_LABEL_NO_LABEL:
3551                 break;
3552         }
3553 }
3554
3555 void LyXText::paintRowText(DrawRowParams & p)
3556 {
3557         Paragraph * par = p.row->par();
3558         Buffer const * buffer = p.bv->buffer();
3559
3560         pos_type const last = rowLastPrintable(p.row);
3561         pos_type main_body =
3562                 beginningOfMainBody(buffer, par);
3563         if (main_body > 0 &&
3564                 (main_body - 1 > last ||
3565                 !par->isLineSeparator(main_body - 1))) {
3566                 main_body = 0;
3567         }
3568
3569         LyXLayout const & layout =
3570                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3571
3572         pos_type vpos = p.row->pos();
3573         while (vpos <= last) {
3574                 pos_type pos = vis2log(vpos);
3575                 if (main_body > 0 && pos == main_body - 1) {
3576                         int const lwidth = lyxfont::width(layout.labelsep,
3577                                 getLabelFont(buffer, par));
3578
3579                         p.x += p.label_hfill + lwidth
3580                                 - singleWidth(p.bv, par, main_body - 1);
3581                 }
3582
3583                 if (par->isHfill(pos)) {
3584                         p.x += 1;
3585
3586                         int const y0 = p.yo + p.row->baseline();
3587                         int const y1 = y0 - defaultHeight() / 2;
3588
3589                         p.pain->line(int(p.x), y1, int(p.x), y0,
3590                                      LColor::added_space);
3591
3592                         if (hfillExpansion(buffer, p.row, pos)) {
3593                                 int const y2 = (y0 + y1) / 2;
3594
3595                                 if (pos >= main_body) {
3596                                         p.pain->line(int(p.x), y2,
3597                                                   int(p.x + p.hfill), y2,
3598                                                   LColor::added_space,
3599                                                   Painter::line_onoffdash);
3600                                         p.x += p.hfill;
3601                                 } else {
3602                                         p.pain->line(int(p.x), y2,
3603                                                   int(p.x + p.label_hfill), y2,
3604                                                   LColor::added_space,
3605                                                   Painter::line_onoffdash);
3606                                         p.x += p.label_hfill;
3607                                 }
3608                                 p.pain->line(int(p.x), y1,
3609                                              int(p.x), y0,
3610                                              LColor::added_space);
3611                         }
3612                         p.x += 2;
3613                         ++vpos;
3614                 } else if (par->isSeparator(pos)) {
3615                         p.x += singleWidth(p.bv, par, pos);
3616                         if (pos >= main_body)
3617                                 p.x += p.separator;
3618                         ++vpos;
3619                 } else {
3620                         draw(p, vpos);
3621                 }
3622         }
3623 }
3624
3625
3626 void LyXText::getVisibleRow(BufferView * bv, int y_offset, int x_offset,
3627                             Row * row, int y, bool cleared)
3628 {
3629         if (row->height() <= 0) {
3630                 lyxerr << "LYX_ERROR: row.height: "
3631                        << row->height() << endl;
3632                 return;
3633         }
3634
3635         DrawRowParams p;
3636
3637         // set up drawing parameters
3638         p.bv = bv;
3639         p.pain = &bv->painter();
3640         p.row = row;
3641         p.xo = x_offset;
3642         p.yo = y_offset;
3643         prepareToPrint(bv, row, p.x, p.separator, p.hfill, p.label_hfill);
3644         if (inset_owner && (p.x < 0))
3645                 p.x = 0;
3646         p.x += p.xo;
3647         p.y = y;
3648         p.width = inset_owner ? inset_owner->textWidth(bv, true) : bv->workWidth();
3649         p.cleared = cleared;
3650
3651         // start painting
3652
3653         // clear to background if necessary
3654         p.cleared = paintRowBackground(p);
3655
3656         // paint the selection background
3657         if (selection.set()) {
3658                 paintRowSelection(p);
3659         }
3660
3661         // vertical lines for appendix
3662         paintRowAppendix(p);
3663
3664         // environment depth brackets
3665         paintRowDepthBar(p);
3666
3667         // draw any stuff wanted for a first row of a paragraph
3668         if (!row->pos()) {
3669                 paintFirstRow(p);
3670         }
3671
3672         // draw any stuff wanted for the last row of a paragraph
3673         if (!row->next() || (row->next()->par() != row->par())) {
3674                 paintLastRow(p);
3675         }
3676
3677         // paint text
3678         paintRowText(p);
3679 }
3680
3681
3682 int LyXText::defaultHeight() const
3683 {
3684         LyXFont font(LyXFont::ALL_SANE);
3685         return int(lyxfont::maxAscent(font) + lyxfont::maxDescent(font) * 1.5);
3686 }
3687
3688
3689 /* returns the column near the specified x-coordinate of the row
3690 * x is set to the real beginning of this column  */
3691 pos_type
3692 LyXText::getColumnNearX(BufferView * bview, Row * row, int & x,
3693                         bool & boundary) const
3694 {
3695         float tmpx = 0.0;
3696         float fill_separator;
3697         float fill_hfill;
3698         float fill_label_hfill;
3699
3700         prepareToPrint(bview, row, tmpx, fill_separator,
3701                        fill_hfill, fill_label_hfill);
3702
3703         pos_type vc = row->pos();
3704         pos_type last = rowLastPrintable(row);
3705         pos_type c = 0;
3706         LyXLayout const & layout =
3707                 textclasslist.Style(bview->buffer()->params.textclass,
3708                                     row->par()->getLayout());
3709         bool left_side = false;
3710
3711         pos_type main_body = beginningOfMainBody(bview->buffer(), row->par());
3712         float last_tmpx = tmpx;
3713
3714         if (main_body > 0 &&
3715             (main_body - 1 > last ||
3716              !row->par()->isLineSeparator(main_body - 1)))
3717                 main_body = 0;
3718
3719         while (vc <= last && tmpx <= x) {
3720                 c = vis2log(vc);
3721                 last_tmpx = tmpx;
3722                 if (main_body > 0 && c == main_body-1) {
3723                         tmpx += fill_label_hfill +
3724                                 lyxfont::width(layout.labelsep,
3725                                                getLabelFont(bview->buffer(), row->par()));
3726                         if (row->par()->isLineSeparator(main_body - 1))
3727                                 tmpx -= singleWidth(bview, row->par(), main_body-1);
3728                 }
3729
3730                 if (hfillExpansion(bview->buffer(), row, c)) {
3731                         x += singleWidth(bview, row->par(), c);
3732                         if (c >= main_body)
3733                                 tmpx += fill_hfill;
3734                         else
3735                                 tmpx += fill_label_hfill;
3736                 }
3737                 else if (row->par()->isSeparator(c)) {
3738                         tmpx += singleWidth(bview, row->par(), c);
3739                         if (c >= main_body)
3740                                 tmpx+= fill_separator;
3741                 } else
3742                         tmpx += singleWidth(bview, row->par(), c);
3743                 ++vc;
3744         }
3745
3746         if ((tmpx + last_tmpx) / 2 > x) {
3747                 tmpx = last_tmpx;
3748                 left_side = true;
3749         }
3750
3751         if (vc > last + 1)  // This shouldn't happen.
3752                 vc = last + 1;
3753
3754         boundary = false;
3755         bool const lastrow = lyxrc.rtl_support // This is not needed, but gives
3756                                          // some speedup if rtl_support=false
3757                 && (!row->next() || row->next()->par() != row->par());
3758         bool const rtl = (lastrow)
3759                 ? row->par()->isRightToLeftPar(bview->buffer()->params)
3760                 : false; // If lastrow is false, we don't need to compute
3761                          // the value of rtl.
3762
3763         if (row->pos() > last)  // Row is empty?
3764                 c = row->pos();
3765         else if (lastrow &&
3766                  ( ( rtl &&  left_side && vc == row->pos() && x < tmpx - 5) ||
3767                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5) ))
3768                 c = last + 1;
3769         else if (vc == row->pos()) {
3770                 c = vis2log(vc);
3771                 if (bidi_level(c) % 2 == 1)
3772                         ++c;
3773         } else {
3774                 c = vis2log(vc - 1);
3775                 bool const rtl = (bidi_level(c) % 2 == 1);
3776                 if (left_side == rtl) {
3777                         ++c;
3778                         boundary = isBoundary(bview->buffer(), row->par(), c);
3779                 }
3780         }
3781
3782         if (row->pos() <= last && c > last
3783             && row->par()->isNewline(last)) {
3784                 if (bidi_level(last) % 2 == 0)
3785                         tmpx -= singleWidth(bview, row->par(), last);
3786                 else
3787                         tmpx += singleWidth(bview, row->par(), last);
3788                 c = last;
3789         }
3790
3791         c -= row->pos();
3792         x = int(tmpx);
3793         return c;
3794 }
3795
3796
3797 // returns pointer to a specified row
3798 Row * LyXText::getRow(Paragraph * par, pos_type pos, int & y) const
3799 {
3800         if (!firstrow)
3801                 return 0;
3802
3803         Row * tmprow = firstrow;
3804         y = 0;
3805
3806         // find the first row of the specified paragraph
3807         while (tmprow->next() && tmprow->par() != par) {
3808                 y += tmprow->height();
3809                 tmprow = tmprow->next();
3810         }
3811
3812         // now find the wanted row
3813         while (tmprow->pos() < pos
3814                && tmprow->next()
3815                && tmprow->next()->par() == par
3816                && tmprow->next()->pos() <= pos) {
3817                 y += tmprow->height();
3818                 tmprow = tmprow->next();
3819         }
3820
3821         return tmprow;
3822 }
3823
3824
3825 Row * LyXText::getRowNearY(int & y) const
3826 {
3827         // If possible we should optimize this method. (Lgb)
3828         Row * tmprow = firstrow;
3829         int tmpy = 0;
3830
3831         while (tmprow->next() && tmpy + tmprow->height() <= y) {
3832                 tmpy += tmprow->height();
3833                 tmprow = tmprow->next();
3834         }
3835
3836         y = tmpy;   // return the real y
3837         return tmprow;
3838 }
3839
3840
3841 int LyXText::getDepth() const
3842 {
3843         return cursor.par()->getDepth();
3844 }