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 "lyxtextclasslist.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 = -1;
  73
  74         par = inset->parOwner();
  75         if (par)
  76                 pos = par->getPositionOfInset(inset);
  77
  78         if (!par || pos == -1) {
  79                 lyxerr << "LyXText::workWidth: something is wrong,"
  80                         " fall back to the brute force method" << endl;
  81                 Buffer::inset_iterator it = bview->buffer()->inset_iterator_begin();
  82                 Buffer::inset_iterator end = bview->buffer()->inset_iterator_end();
  83                 for ( ; it != end; ++it) {
  84                         if (*it == inset) {
  85                                 par = it.getPar();
  86                                 pos = it.getPos();
  87                                 break;
  88                         }
  89                 }
  90         }
  91
  92         if (!par) {
  93                 return workWidth(bview);
  94         }
  95
  96         LyXLayout const & layout =
  97                 textclasslist.Style(bview->buffer()->params.textclass,
  98                                     par->getLayout());
  99
 100         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
 101                 // Optimization here: in most cases, the real row is
 102                 // not needed, but only the par/pos values. So we just
 103                 // construct a dummy row for leftMargin. (JMarc)
 104                 Row dummyrow;
 105                 dummyrow.par(par);
 106                 dummyrow.pos(pos);
 107                 return workWidth(bview) - leftMargin(bview, &dummyrow);
 108         } else {
 109                 int dummy_y;
 110                 Row * row = getRow(par, pos, dummy_y);
 111                 Row * frow = row;
 112                 while (frow->previous() && frow->par() == frow->previous()->par())
 113                         frow = frow->previous();
 114                 unsigned int maxw = 0;
 115                 while (frow->next() && frow->par() == frow->next()->par()) {
 116                         if ((frow != row) && (maxw < frow->width()))
 117                                 maxw = frow->width();
 118                         frow = frow->next();
 119                 }
 120                 if (maxw)
 121                         return maxw;
 122         }
 123         return workWidth(bview);
 124 }
 125
 126
 127 int LyXText::getRealCursorX(BufferView * bview) const
 128 {
 129         int x = cursor.x();
 130         if (the_locking_inset && (the_locking_inset->getLyXText(bview)!=this))
 131                 x = the_locking_inset->getLyXText(bview)->getRealCursorX(bview);
 132         return x;
 133 }
 134
 135
 136 unsigned char LyXText::transformChar(unsigned char c, Paragraph * par,
 137                         pos_type pos) const
 138 {
 139         if (!Encodings::is_arabic(c))
 140                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
 141                         return c + (0xb0 - '0');
 142                 else
 143                         return c;
 144
 145         unsigned char const prev_char = pos > 0 ? par->getChar(pos-1) : ' ';
 146         unsigned char next_char = ' ';
 147
 148         for (pos_type i = pos+1; i < par->size(); ++i)
 149                 if (!Encodings::IsComposeChar_arabic(par->getChar(i))) {
 150                         next_char = par->getChar(i);
 151                         break;
 152                 }
 153
 154         if (Encodings::is_arabic(next_char)) {
 155                 if (Encodings::is_arabic(prev_char))
 156                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
 157                 else
 158                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
 159         } else {
 160                 if (Encodings::is_arabic(prev_char))
 161                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
 162                 else
 163                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
 164         }
 165 }
 166
 167 // This is the comments that some of the warnings below refers to.
 168 // There are some issues in this file and I don't think they are
 169 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
 170 // this is a problem that has been here almost from day one and that a
 171 // larger userbase with differenct access patters triggers the bad
 172 // behaviour. (segfaults.) What I think happen is: In several places
 173 // we store the paragraph in the current cursor and then moves the
 174 // cursor. This movement of the cursor will delete paragraph at the
 175 // old position if it is now empty. This will make the temporary
 176 // pointer to the old cursor paragraph invalid and dangerous to use.
 177 // And is some cases this will trigger a segfault. I have marked some
 178 // of the cases where this happens with a warning, but I am sure there
 179 // are others in this file and in text2.C. There is also a note in
 180 // Delete() that you should read. In Delete I store the paragraph->id
 181 // instead of a pointer to the paragraph. I am pretty sure this faulty
 182 // use of temporary pointers to paragraphs that might have gotten
 183 // invalidated (through a cursor movement) before they are used, are
 184 // the cause of the strange crashes we get reported often.
 185 //
 186 // It is very tiresom to change this code, especially when it is as
 187 // hard to read as it is. Help to fix all the cases where this is done
 188 // would be greately appreciated.
 189 //
 190 // Lgb
 191
 192 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 193                          pos_type pos) const
 194 {
 195         char const c = par->getChar(pos);
 196         return singleWidth(bview, par, pos, c);
 197 }
 198
 199
 200 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 201                          pos_type pos, char c) const
 202 {
 203         LyXFont const font = getFont(bview->buffer(), par, pos);
 204
 205         // The most common case is handled first (Asger)
 206         if (IsPrintable(c)) {
 207                 if (font.language()->RightToLeft()) {
 208                         if (font.language()->lang() == "arabic" &&
 209                             (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 210                              lyxrc.font_norm_type == LyXRC::ISO_10646_1))
 211                                 if (Encodings::IsComposeChar_arabic(c))
 212                                         return 0;
 213                                 else
 214                                         c = transformChar(c, par, pos);
 215                         else if (font.language()->lang() == "hebrew" &&
 216                                  Encodings::IsComposeChar_hebrew(c))
 217                                 return 0;
 218                 }
 219                 return lyxfont::width(c, font);
 220
 221         } else if (IsHfillChar(c)) {
 222                 return 3;       /* Because of the representation
 223                                  * as vertical lines */
 224         } else if (c == Paragraph::META_INSET) {
 225                 Inset * tmpinset = par->getInset(pos);
 226                 if (tmpinset) {
 227 #if 1
 228                         // this IS needed otherwise on initialitation we don't get the fill
 229                         // of the row right (ONLY on initialization if we read a file!)
 230                         // should be changed! (Jug 20011204)
 231                         tmpinset->update(bview, font);
 232 #endif
 233                         return tmpinset->width(bview, font);
 234                 } else
 235                         return 0;
 236
 237         } else if (IsSeparatorChar(c))
 238                 c = ' ';
 239         else if (IsNewlineChar(c))
 240                 c = 'n';
 241         return lyxfont::width(c, font);
 242 }
 243
 244
 245 // Returns the paragraph position of the last character in the specified row
 246 pos_type LyXText::rowLast(Row const * row) const
 247 {
 248         if (!row->next() || row->next()->par() != row->par()) {
 249                 return row->par()->size() - 1;
 250         } else {
 251                 return row->next()->pos() - 1;
 252         }
 253 }
 254
 255
 256 pos_type LyXText::rowLastPrintable(Row const * row) const
 257 {
 258         pos_type const last = rowLast(row);
 259         if (last >= row->pos()
 260             && row->next()
 261             && row->next()->par() == row->par()
 262             && row->par()->isSeparator(last))
 263                 return last - 1;
 264         else
 265                 return last;
 266 }
 267
 268
 269 void LyXText::computeBidiTables(Buffer const * buf, Row * row) const
 270 {
 271         bidi_same_direction = true;
 272         if (!lyxrc.rtl_support) {
 273                 bidi_start = -1;
 274                 return;
 275         }
 276
 277         bidi_start = row->pos();
 278         bidi_end = rowLastPrintable(row);
 279
 280         if (bidi_start > bidi_end) {
 281                 bidi_start = -1;
 282                 return;
 283         }
 284
 285         if (bidi_end + 2 - bidi_start >
 286             static_cast<pos_type>(log2vis_list.size())) {
 287                 pos_type new_size =
 288                         (bidi_end + 2 - bidi_start < 500) ?
 289                         500 : 2 * (bidi_end + 2 - bidi_start);
 290                 log2vis_list.resize(new_size);
 291                 vis2log_list.resize(new_size);
 292                 bidi_levels.resize(new_size);
 293         }
 294
 295         vis2log_list[bidi_end + 1 - bidi_start] = -1;
 296         log2vis_list[bidi_end + 1 - bidi_start] = -1;
 297
 298         pos_type stack[2];
 299         bool const rtl_par =
 300                 row->par()->getParLanguage(buf->params)->RightToLeft();
 301         int level = 0;
 302         bool rtl = false;
 303         bool rtl0 = false;
 304         pos_type const main_body = beginningOfMainBody(buf, row->par());
 305
 306         for (pos_type lpos = bidi_start;
 307              lpos <= bidi_end; ++lpos) {
 308                 bool is_space = row->par()->isLineSeparator(lpos);
 309                 pos_type const pos =
 310                         (is_space && lpos + 1 <= bidi_end &&
 311                          !row->par()->isLineSeparator(lpos + 1) &&
 312                          !row->par()->isNewline(lpos + 1))
 313                         ? lpos + 1 : lpos;
 314                 LyXFont font = row->par()->getFontSettings(buf->params, pos);
 315                 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
 316                     font.number() == LyXFont::ON &&
 317                     row->par()->getFontSettings(buf->params, lpos - 1).number()
 318                     == LyXFont::ON) {
 319                         font = row->par()->getFontSettings(buf->params, lpos);
 320                         is_space = false;
 321                 }
 322
 323
 324                 bool new_rtl = font.isVisibleRightToLeft();
 325                 bool new_rtl0 = font.isRightToLeft();
 326                 int new_level;
 327
 328                 if (lpos == main_body - 1
 329                     && row->pos() < main_body - 1
 330                     && is_space) {
 331                         new_level = (rtl_par) ? 1 : 0;
 332                         new_rtl = new_rtl0 = rtl_par;
 333                 } else if (new_rtl0)
 334                         new_level = (new_rtl) ? 1 : 2;
 335                 else
 336                         new_level = (rtl_par) ? 2 : 0;
 337
 338                 if (is_space && new_level >= level) {
 339                         new_level = level;
 340                         new_rtl = rtl;
 341                         new_rtl0 = rtl0;
 342                 }
 343
 344                 int new_level2 = new_level;
 345
 346                 if (level == new_level && rtl0 != new_rtl0) {
 347                         --new_level2;
 348                         log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
 349                 } else if (level < new_level) {
 350                         log2vis_list[lpos - bidi_start] =  (rtl) ? -1 : 1;
 351                         if (new_level > rtl_par)
 352                                 bidi_same_direction = false;
 353                 } else
 354                         log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
 355                 rtl = new_rtl;
 356                 rtl0 = new_rtl0;
 357                 bidi_levels[lpos - bidi_start] = new_level;
 358
 359                 while (level > new_level2) {
 360                         pos_type old_lpos = stack[--level];
 361                         int delta = lpos - old_lpos - 1;
 362                         if (level % 2)
 363                                 delta = -delta;
 364                         log2vis_list[lpos - bidi_start] += delta;
 365                         log2vis_list[old_lpos - bidi_start] += delta;
 366                 }
 367                 while (level < new_level)
 368                         stack[level++] = lpos;
 369         }
 370
 371         while (level > 0) {
 372                 pos_type const old_lpos = stack[--level];
 373                 int delta = bidi_end - old_lpos;
 374                 if (level % 2)
 375                         delta = -delta;
 376                 log2vis_list[old_lpos - bidi_start] += delta;
 377         }
 378
 379         pos_type vpos = bidi_start - 1;
 380         for (pos_type lpos = bidi_start;
 381              lpos <= bidi_end; ++lpos) {
 382                 vpos += log2vis_list[lpos - bidi_start];
 383                 vis2log_list[vpos - bidi_start] = lpos;
 384                 log2vis_list[lpos - bidi_start] = vpos;
 385         }
 386 }
 387
 388
 389 // This method requires a previous call to ComputeBidiTables()
 390 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 391                          pos_type pos) const
 392 {
 393         if (!lyxrc.rtl_support || pos == 0)
 394                 return false;
 395
 396         if (!bidi_InRange(pos - 1)) {
 397                 /// This can happen if pos is the first char of a row.
 398                 /// Returning false in this case is incorrect!
 399                 return false;
 400         }
 401
 402         bool const rtl = bidi_level(pos - 1) % 2;
 403         bool const rtl2 = bidi_InRange(pos)
 404                 ? bidi_level(pos) % 2
 405                 : par->isRightToLeftPar(buf->params);
 406         return rtl != rtl2;
 407 }
 408
 409
 410 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 411                          pos_type pos, LyXFont const & font) const
 412 {
 413         if (!lyxrc.rtl_support)
 414                 return false;    // This is just for speedup
 415
 416         bool const rtl = font.isVisibleRightToLeft();
 417         bool const rtl2 = bidi_InRange(pos)
 418                 ? bidi_level(pos) % 2
 419                 : par->isRightToLeftPar(buf->params);
 420         return rtl != rtl2;
 421 }
 422
 423 void LyXText::drawNewline(DrawRowParams & p, pos_type const pos)
 424 {
 425         // Draw end-of-line marker
 426         LyXFont const font = getFont(p.bv->buffer(), p.row->par(), pos);
 427         int const wid = lyxfont::width('n', font);
 428         int const asc = lyxfont::maxAscent(font);
 429         int const y = p.yo + p.row->baseline();
 430         int xp[3];
 431         int yp[3];
 432
 433         yp[0] = int(y - 0.875 * asc * 0.75);
 434         yp[1] = int(y - 0.500 * asc * 0.75);
 435         yp[2] = int(y - 0.125 * asc * 0.75);
 436
 437         if (bidi_level(pos) % 2 == 0) {
 438                 xp[0] = int(p.x + wid * 0.375);
 439                 xp[1] = int(p.x);
 440                 xp[2] = int(p.x + wid * 0.375);
 441         } else {
 442                 xp[0] = int(p.x + wid * 0.625);
 443                 xp[1] = int(p.x + wid);
 444                 xp[2] = int(p.x + wid * 0.625);
 445         }
 446
 447         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 448
 449         yp[0] = int(y - 0.500 * asc * 0.75);
 450         yp[1] = int(y - 0.500 * asc * 0.75);
 451         yp[2] = int(y - asc * 0.75);
 452
 453         if (bidi_level(pos) % 2 == 0) {
 454                 xp[0] = int(p.x);
 455                 xp[1] = int(p.x + wid);
 456                 xp[2] = int(p.x + wid);
 457         } else {
 458                 xp[0] = int(p.x + wid);
 459                 xp[1] = int(p.x);
 460                 xp[2] = int(p.x);
 461         }
 462
 463         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 464
 465         p.x += wid;
 466 }
 467
 468
 469 void LyXText::drawInset(DrawRowParams & p, pos_type const pos)
 470 {
 471         Inset * inset = p.row->par()->getInset(pos);
 472
 473         // FIXME: shouldn't happen
 474         if (!inset) {
 475                 return;
 476         }
 477
 478         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 479
 480         inset->update(p.bv, font, false);
 481         inset->draw(p.bv, font, p.yo + p.row->baseline(), p.x, p.cleared);
 482
 483         if (!need_break_row && !inset_owner
 484                 && p.bv->text->status() == CHANGED_IN_DRAW) {
 485                 Row * prev = p.row->previous();
 486                 if (prev && prev->par() == p.row->par()) {
 487                         breakAgainOneRow(p.bv, prev);
 488                 }
 489                 setCursor(p.bv, cursor.par(), cursor.pos());
 490                 need_break_row = p.row;
 491         }
 492 }
 493
 494
 495 void LyXText::drawForeignMark(DrawRowParams & p, float const orig_x, LyXFont const & orig_font)
 496 {
 497         if (!lyxrc.mark_foreign_language)
 498                 return;
 499         if (orig_font.language() == latex_language)
 500                 return;
 501         if (orig_font.language() == p.bv->buffer()->params.language)
 502                 return;
 503
 504         int const y = p.yo + p.row->height() - 1;
 505         p.pain->line(int(orig_x), y, int(p.x), y, LColor::language);
 506 }
 507
 508
 509 void LyXText::drawHebrewComposeChar(DrawRowParams & p, pos_type & vpos)
 510 {
 511         pos_type pos = vis2log(vpos);
 512
 513         string str;
 514
 515         // first char
 516         char c = p.row->par()->getChar(pos);
 517         str += c;
 518         ++vpos;
 519
 520         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 521         int const width = lyxfont::width(c, font);
 522         int dx = 0;
 523
 524         for (pos_type i = pos-1; i >= 0; --i) {
 525                 c = p.row->par()->getChar(i);
 526                 if (!Encodings::IsComposeChar_hebrew(c)) {
 527                         if (IsPrintableNonspace(c)) {
 528                                 int const width2 =
 529                                         singleWidth(p.bv, p.row->par(), i, c);
 530                                 // dalet / resh
 531                                 dx = (c == 'ø' || c == 'ã')
 532                                         ? width2 - width
 533                                         : (width2 - width) / 2;
 534                         }
 535                         break;
 536                 }
 537         }
 538
 539         // Draw nikud
 540         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 541 }
 542
 543
 544 void LyXText::drawArabicComposeChar(DrawRowParams & p, pos_type & vpos)
 545 {
 546         pos_type pos = vis2log(vpos);
 547         string str;
 548
 549         // first char
 550         char c = p.row->par()->getChar(pos);
 551         c = transformChar(c, p.row->par(), pos);
 552         str +=c;
 553         ++vpos;
 554
 555         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 556         int const width = lyxfont::width(c, font);
 557         int dx = 0;
 558
 559         for (pos_type i = pos-1; i >= 0; --i) {
 560                 c = p.row->par()->getChar(i);
 561                 if (!Encodings::IsComposeChar_arabic(c)) {
 562                         if (IsPrintableNonspace(c)) {
 563                                 int const width2 =
 564                                         singleWidth(p.bv, p.row->par(), i, c);
 565                                 dx = (width2 - width) / 2;
 566                         }
 567                         break;
 568                 }
 569         }
 570         // Draw nikud
 571         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 572 }
 573
 574
 575 void LyXText::drawChars(DrawRowParams & p, pos_type & vpos,
 576         bool hebrew, bool arabic)
 577 {
 578         pos_type pos = vis2log(vpos);
 579         pos_type const last = rowLastPrintable(p.row);
 580         LyXFont const & orig_font = getFont(p.bv->buffer(), p.row->par(), pos);
 581
 582         // first character
 583         string str;
 584         str += p.row->par()->getChar(pos);
 585         if (arabic) {
 586                 unsigned char c = str[0];
 587                 str[0] = transformChar(c, p.row->par(), pos);
 588         }
 589         ++vpos;
 590
 591         // collect as much similar chars as we can
 592         while (vpos <= last && (pos = vis2log(vpos)) >= 0) {
 593                 char c = p.row->par()->getChar(pos);
 594
 595                 if (!IsPrintableNonspace(c))
 596                         break;
 597
 598                 if (arabic && Encodings::IsComposeChar_arabic(c))
 599                         break;
 600                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 601                         break;
 602
 603                 if (orig_font != getFont(p.bv->buffer(), p.row->par(), pos))
 604                         break;
 605
 606                 str += c;
 607                 ++vpos;
 608         }
 609
 610         // Draw text and set the new x position
 611         p.pain->text(int(p.x), p.yo + p.row->baseline(), str, orig_font);
 612         p.x += lyxfont::width(str, orig_font);
 613 }
 614
 615
 616 void LyXText::draw(DrawRowParams & p, pos_type & vpos)
 617 {
 618         pos_type const pos = vis2log(vpos);
 619         Paragraph * par = p.row->par();
 620
 621         LyXFont const & orig_font = getFont(p.bv->buffer(), par, pos);
 622
 623         float const orig_x = p.x;
 624
 625         char const c = par->getChar(pos);
 626
 627         if (IsNewlineChar(c)) {
 628                 ++vpos;
 629                 drawNewline(p, pos);
 630                 return;
 631         } else if (IsInsetChar(c)) {
 632                 drawInset(p, pos);
 633                 ++vpos;
 634                 drawForeignMark(p, orig_x, orig_font);
 635                 return;
 636         }
 637
 638         // usual characters, no insets
 639
 640         // special case languages
 641         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 642         bool const arabic =
 643                 orig_font.language()->lang() == "arabic" &&
 644                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 645                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 646
 647         // draw as many chars as we can
 648         if ((!hebrew && !arabic)
 649                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 650                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 651                 drawChars(p, vpos, true, false);
 652         } else if (hebrew) {
 653                 drawHebrewComposeChar(p, vpos);
 654         } else if (arabic) {
 655                 drawArabicComposeChar(p, vpos);
 656         }
 657
 658         drawForeignMark(p, orig_x, orig_font);
 659
 660 #ifdef INHERIT_LANGUAGE
 661 #ifdef WITH_WARNINGS
 662         if ((font.language() == inherit_language) ||
 663                 (font.language() == ignore_language))
 664                 lyxerr << "No this shouldn't happen!\n";
 665 #endif
 666 #endif
 667 }
 668
 669
 670 // Returns the left beginning of the text.
 671 // This information cannot be taken from the layouts-objekt, because in
 672 // LaTeX the beginning of the text fits in some cases (for example sections)
 673 // exactly the label-width.
 674 int LyXText::leftMargin(BufferView * bview, Row const * row) const
 675 {
 676         LyXTextClass const & tclass =
 677                 textclasslist.TextClass(bview->buffer()->params.textclass);
 678         LyXLayout const & layout = tclass[row->par()->getLayout()];
 679
 680         string parindent = layout.parindent;
 681
 682         int x = LYX_PAPER_MARGIN;
 683
 684         x += lyxfont::signedWidth(tclass.leftmargin(), tclass.defaultfont());
 685
 686         // this is the way, LyX handles the LaTeX-Environments.
 687         // I have had this idea very late, so it seems to be a
 688         // later added hack and this is true
 689         if (!row->par()->getDepth()) {
 690                 if (!row->par()->getLayout()) {
 691                         // find the previous same level paragraph
 692                         if (row->par()->previous()) {
 693                                 Paragraph * newpar = row->par()
 694                                         ->depthHook(row->par()->getDepth());
 695                                 if (newpar &&
 696                                     tclass[newpar->getLayout()].nextnoindent)
 697                                         parindent.erase();
 698                         }
 699                 }
 700         } else {
 701                 // find the next level paragraph
 702
 703                 Paragraph * newpar =
 704                         row->par()->outerHook();
 705
 706                 // make a corresponding row. Needed to call LeftMargin()
 707
 708                 // check wether it is a sufficent paragraph
 709                 if (newpar && tclass[newpar->getLayout()].isEnvironment())
 710                 {
 711                         Row dummyrow;
 712                         dummyrow.par(newpar);
 713                         dummyrow.pos(newpar->size());
 714                         x = leftMargin(bview, &dummyrow);
 715                 } else {
 716                         // this is no longer an error, because this function
 717                         // is used to clear impossible depths after changing
 718                         // a layout. Since there is always a redo,
 719                         // LeftMargin() is always called
 720                         row->par()->params().depth(0);
 721                 }
 722
 723                 if (newpar && !row->par()->getLayout()) {
 724                         if (newpar->params().noindent())
 725                                 parindent.erase();
 726                         else
 727                                 parindent = tclass[newpar->getLayout()].parindent;
 728                 }
 729
 730         }
 731
 732         LyXFont const labelfont = getLabelFont(bview->buffer(), row->par());
 733         switch (layout.margintype) {
 734         case MARGIN_DYNAMIC:
 735                 if (!layout.leftmargin.empty()) {
 736                         x += lyxfont::signedWidth(layout.leftmargin,
 737                                                   tclass.defaultfont());
 738                 }
 739                 if (!row->par()->getLabelstring().empty()) {
 740                         x += lyxfont::signedWidth(layout.labelindent,
 741                                                   labelfont);
 742                         x += lyxfont::width(row->par()->getLabelstring(),
 743                                             labelfont);
 744                         x += lyxfont::width(layout.labelsep, labelfont);
 745                 }
 746                 break;
 747         case MARGIN_MANUAL:
 748                 x += lyxfont::signedWidth(layout.labelindent, labelfont);
 749                 if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 750                         if (!row->par()->getLabelWidthString().empty()) {
 751                                 x += lyxfont::width(row->par()->getLabelWidthString(),
 752                                                labelfont);
 753                                 x += lyxfont::width(layout.labelsep, labelfont);
 754                         }
 755                 }
 756                 break;
 757         case MARGIN_STATIC:
 758                 x += lyxfont::signedWidth(layout.leftmargin, tclass.defaultfont()) * 4
 759                         / (row->par()->getDepth() + 4);
 760                 break;
 761         case MARGIN_FIRST_DYNAMIC:
 762                 if (layout.labeltype == LABEL_MANUAL) {
 763                         if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 764                                 x += lyxfont::signedWidth(layout.leftmargin,
 765                                                           labelfont);
 766                         } else {
 767                                 x += lyxfont::signedWidth(layout.labelindent,
 768                                                           labelfont);
 769                         }
 770                 } else if (row->pos()
 771                            // Special case to fix problems with
 772                            // theorems (JMarc)
 773                            || (layout.labeltype == LABEL_STATIC
 774                                && layout.latextype == LATEX_ENVIRONMENT
 775                                && ! row->par()->isFirstInSequence())) {
 776                         x += lyxfont::signedWidth(layout.leftmargin,
 777                                                   labelfont);
 778                 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
 779                            && layout.labeltype != LABEL_BIBLIO
 780                            && layout.labeltype !=
 781                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 782                         x += lyxfont::signedWidth(layout.labelindent,
 783                                                   labelfont);
 784                         x += lyxfont::width(layout.labelsep, labelfont);
 785                         x += lyxfont::width(row->par()->getLabelstring(),
 786                                             labelfont);
 787                 }
 788                 break;
 789
 790         case MARGIN_RIGHT_ADDRESS_BOX:
 791         {
 792                 // ok, a terrible hack. The left margin depends on the widest
 793                 // row in this paragraph. Do not care about footnotes, they
 794                 // are *NOT* allowed in the LaTeX realisation of this layout.
 795
 796                 // find the first row of this paragraph
 797                 Row const * tmprow = row;
 798                 while (tmprow->previous()
 799                        && tmprow->previous()->par() == row->par())
 800                         tmprow = tmprow->previous();
 801
 802                 int minfill = tmprow->fill();
 803                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
 804                         tmprow = tmprow->next();
 805                         if (tmprow->fill() < minfill)
 806                                 minfill = tmprow->fill();
 807                 }
 808
 809                 x += lyxfont::signedWidth(layout.leftmargin,
 810                                           tclass.defaultfont());
 811                 x += minfill;
 812         }
 813         break;
 814         }
 815
 816         LyXAlignment align; // wrong type
 817
 818         if (row->par()->params().align() == LYX_ALIGN_LAYOUT)
 819                 align = layout.align;
 820         else
 821                 align = row->par()->params().align();
 822
 823         // set the correct parindent
 824         if (row->pos() == 0) {
 825                 if ((layout.labeltype == LABEL_NO_LABEL
 826                      || layout.labeltype == LABEL_TOP_ENVIRONMENT
 827                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 828                      || (layout.labeltype == LABEL_STATIC
 829                          && layout.latextype == LATEX_ENVIRONMENT
 830                          && ! row->par()->isFirstInSequence()))
 831                     && align == LYX_ALIGN_BLOCK
 832                     && !row->par()->params().noindent()
 833                     && (row->par()->layout ||
 834                         bview->buffer()->params.paragraph_separation ==
 835                         BufferParams::PARSEP_INDENT))
 836                         x += lyxfont::signedWidth(parindent,
 837                                                   tclass.defaultfont());
 838                 else if (layout.labeltype == LABEL_BIBLIO) {
 839                         // ale970405 Right width for bibitems
 840                         x += bibitemMaxWidth(bview, tclass.defaultfont());
 841                 }
 842         }
 843         return x;
 844 }
 845
 846
 847 int LyXText::rightMargin(Buffer const * buf, Row const * row) const
 848 {
 849         LyXTextClass const & tclass =
 850                 textclasslist.TextClass(buf->params.textclass);
 851         LyXLayout const & layout = tclass[row->par()->getLayout()];
 852
 853         int x = LYX_PAPER_MARGIN
 854                 + lyxfont::signedWidth(tclass.rightmargin(),
 855                                        tclass.defaultfont());
 856
 857         // this is the way, LyX handles the LaTeX-Environments.
 858         // I have had this idea very late, so it seems to be a
 859         // later added hack and this is true
 860         if (row->par()->getDepth()) {
 861                 // find the next level paragraph
 862
 863                 Paragraph * newpar = row->par();
 864
 865                 do {
 866                         newpar = newpar->previous();
 867                 } while (newpar
 868                          && newpar->getDepth() >= row->par()->getDepth());
 869
 870                 // make a corresponding row. Needed to call LeftMargin()
 871
 872                 // check wether it is a sufficent paragraph
 873                 if (newpar
 874                     && tclass[newpar->getLayout()].isEnvironment()) {
 875                         Row dummyrow;
 876                         dummyrow.par(newpar);
 877                         dummyrow.pos(0);
 878                         x = rightMargin(buf, &dummyrow);
 879                 } else {
 880                         // this is no longer an error, because this function
 881                         // is used to clear impossible depths after changing
 882                         // a layout. Since there is always a redo,
 883                         // LeftMargin() is always called
 884                         row->par()->params().depth(0);
 885                 }
 886         }
 887
 888         //lyxerr << "rightmargin: " << layout->rightmargin << endl;
 889         x += lyxfont::signedWidth(layout.rightmargin, tclass.defaultfont())
 890                 * 4 / (row->par()->getDepth() + 4);
 891         return x;
 892 }
 893
 894
 895 int LyXText::labelEnd(BufferView * bview, Row const * row) const
 896 {
 897         if (textclasslist.Style(bview->buffer()->params.textclass,
 898                                 row->par()->getLayout()).margintype
 899             == MARGIN_MANUAL) {
 900                 Row tmprow;
 901                 tmprow = *row;
 902                 tmprow.pos(row->par()->size());
 903                 return leftMargin(bview, &tmprow);  /* just the beginning
 904                                                 of the main body */
 905         } else
 906                 return 0;  /* LabelEnd is only needed, if the
 907                               layout fills a flushleft
 908                               label. */
 909 }
 910
 911
 912 // get the next breakpoint in a given paragraph
 913 pos_type
 914 LyXText::nextBreakPoint(BufferView * bview, Row const * row, int width) const
 915 {
 916         Paragraph * par = row->par();
 917
 918         if (width < 0)
 919                 return par->size();
 920
 921         pos_type const pos = row->pos();
 922
 923         // position of the last possible breakpoint
 924         // -1 isn't a suitable value, but a flag
 925         pos_type last_separator = -1;
 926         width -= rightMargin(bview->buffer(), row);
 927
 928         pos_type const main_body =
 929                 beginningOfMainBody(bview->buffer(), par);
 930         LyXLayout const & layout =
 931                 textclasslist.Style(bview->buffer()->params.textclass,
 932                                     par->getLayout());
 933         pos_type i = pos;
 934
 935         if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 936                 /* special code for right address boxes, only newlines count */
 937                 while (i < par->size()) {
 938                         if (par->isNewline(i)) {
 939                                 last_separator = i;
 940                                 i = par->size() - 1; // this means break
 941                                 //x = width;
 942                         } else if (par->isInset(i) && par->getInset(i)
 943                                 && par->getInset(i)->display()) {
 944                                 par->getInset(i)->display(false);
 945                         }
 946                         ++i;
 947                 }
 948         } else {
 949                 // Last position is an invariant
 950                 pos_type const last =
 951                         par->size();
 952                 // this is the usual handling
 953                 int x = leftMargin(bview, row);
 954                 bool doitonetime = true;
 955                 while (doitonetime || ((x < width) && (i < last))) {
 956                         doitonetime = false;
 957                         char const c = par->getChar(i);
 958                         if (IsNewlineChar(c)) {
 959                                 last_separator = i;
 960                                 x = width; // this means break
 961                         } else if (c == Paragraph::META_INSET &&
 962                                    par->getInset(i)) {
 963
 964                                 // check wether a Display() inset is
 965                                 // valid here. if not, change it to
 966                                 // non-display
 967                                 if (par->getInset(i)->display() &&
 968                                     (layout.isCommand() ||
 969                                      (layout.labeltype == LABEL_MANUAL
 970                                       && i < beginningOfMainBody(bview->buffer(), par))))
 971                                 {
 972                                         // display istn't allowd
 973                                         par->getInset(i)->display(false);
 974                                         x += singleWidth(bview, par, i, c);
 975                                 } else if (par->getInset(i)->display() ||
 976                                            par->getInset(i)->needFullRow())
 977                                 {
 978                                         // So break the line here
 979                                         if (i == pos) {
 980                                                 if (pos < last-1) {
 981                                                         last_separator = i;
 982                                                         if (IsLineSeparatorChar(par->getChar(i+1)))
 983                                                                 ++last_separator;
 984                                                 } else
 985                                                         last_separator = last; // to avoid extra rows
 986                                         } else
 987                                                 last_separator = i - 1;
 988                                         x = width;  // this means break
 989                                 } else {
 990                                         x += singleWidth(bview, par, i, c);
 991                                         // we have to check this separately as we could have a
 992                                         // lineseparator and then the algorithm below would prefer
 993                                         // that which IS wrong! We should always break on an inset
 994                                         // if it's too long and not on the last separator.
 995                                         // Maybe the only exeption is insets used as chars but
 996                                         // then we would have to have a special function inside
 997                                         // the inset to tell us this. Till then we leave it as
 998                                         // it is now. (Jug 20020106)
 999                                         if (pos < i && x >= width && last_separator >= 0)
1000                                                 last_separator = i - 1;
1001                                 }
1002                         } else  {
1003                                 if (IsLineSeparatorChar(c))
1004                                         last_separator = i;
1005                                 x += singleWidth(bview, par, i, c);
1006                         }
1007                         ++i;
1008                         if (i == main_body) {
1009                                 x += lyxfont::width(layout.labelsep,
1010                                                     getLabelFont(bview->buffer(), par));
1011                                 if (par->isLineSeparator(i - 1))
1012                                         x-= singleWidth(bview, par, i - 1);
1013                                 int left_margin = labelEnd(bview, row);
1014                                 if (x < left_margin)
1015                                         x = left_margin;
1016                         }
1017                 }
1018                 if ((pos+1 < i) && (last_separator < 0) && (x >= width))
1019                         last_separator = i - 2;
1020                 else if ((pos < i) && (last_separator < 0) && (x >= width))
1021                         last_separator = i - 1;
1022                 // end of paragraph is always a suitable separator
1023                 else if (i == last && x < width)
1024                         last_separator = i;
1025         }
1026
1027         // well, if last_separator is still 0, the line isn't breakable.
1028         // don't care and cut simply at the end
1029         if (last_separator < 0) {
1030                 last_separator = i;
1031         }
1032
1033         // manual labels cannot be broken in LaTeX, do not care
1034         if (main_body && last_separator < main_body)
1035                 last_separator = main_body - 1;
1036
1037         return last_separator;
1038 }
1039
1040
1041 // returns the minimum space a row needs on the screen in pixel
1042 int LyXText::fill(BufferView * bview, Row * row, int paper_width) const
1043 {
1044         if (paper_width < 0)
1045                 return 0;
1046
1047         int w;
1048         // get the pure distance
1049         pos_type const last = rowLastPrintable(row);
1050
1051         // special handling of the right address boxes
1052         if (textclasslist.Style(bview->buffer()->params.textclass,
1053                                 row->par()->getLayout()).margintype
1054             == MARGIN_RIGHT_ADDRESS_BOX)
1055         {
1056                 int const tmpfill = row->fill();
1057                 row->fill(0); // the minfill in MarginLeft()
1058                 w = leftMargin(bview, row);
1059                 row->fill(tmpfill);
1060         } else
1061                 w = leftMargin(bview, row);
1062
1063         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1064                                                        row->par()->getLayout());
1065         pos_type const main_body =
1066                 beginningOfMainBody(bview->buffer(), row->par());
1067         pos_type i = row->pos();
1068
1069         while (i <= last) {
1070                 if (main_body > 0 && i == main_body) {
1071                         w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1072                         if (row->par()->isLineSeparator(i - 1))
1073                                 w -= singleWidth(bview, row->par(), i - 1);
1074                         int left_margin = labelEnd(bview, row);
1075                         if (w < left_margin)
1076                                 w = left_margin;
1077                 }
1078                 w += singleWidth(bview, row->par(), i);
1079                 ++i;
1080         }
1081         if (main_body > 0 && main_body > last) {
1082                 w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1083                 if (last >= 0 && row->par()->isLineSeparator(last))
1084                         w -= singleWidth(bview, row->par(), last);
1085                 int const left_margin = labelEnd(bview, row);
1086                 if (w < left_margin)
1087                         w = left_margin;
1088         }
1089
1090         int const fill = paper_width - w - rightMargin(bview->buffer(), row);
1091         return fill;
1092 }
1093
1094
1095 // returns the minimum space a manual label needs on the screen in pixel
1096 int LyXText::labelFill(BufferView * bview, Row const * row) const
1097 {
1098         pos_type last = beginningOfMainBody(bview->buffer(), row->par()) - 1;
1099         // -1 because a label ends either with a space that is in the label,
1100         // or with the beginning of a footnote that is outside the label.
1101
1102         // I don't understand this code in depth, but sometimes "last" is
1103         // less than 0 and this causes a crash. This fix seems to work
1104         // correctly, but I bet the real error is elsewhere.  The bug is
1105         // triggered when you have an open footnote in a paragraph
1106         // environment with a manual label. (Asger)
1107         if (last < 0) last = 0;
1108
1109         if (row->par()->isLineSeparator(last)) /* a sepearator at this end
1110                                                 does not count */
1111                 --last;
1112
1113         int w = 0;
1114         pos_type i = row->pos();
1115         while (i <= last) {
1116                 w += singleWidth(bview, row->par(), i);
1117                 ++i;
1118         }
1119
1120         int fill = 0;
1121         if (!row->par()->params().labelWidthString().empty()) {
1122                 fill = max(lyxfont::width(row->par()->params().labelWidthString(),
1123                                           getLabelFont(bview->buffer(), row->par())) - w,
1124                            0);
1125         }
1126
1127         return fill;
1128 }
1129
1130
1131 // returns the number of separators in the specified row. The separator
1132 // on the very last column doesnt count
1133 int LyXText::numberOfSeparators(Buffer const * buf, Row const * row) const
1134 {
1135         pos_type const last = rowLast(row);
1136         pos_type p = max(row->pos(), beginningOfMainBody(buf, row->par()));
1137         int n = 0;
1138         for (; p < last; ++p) {
1139                 if (row->par()->isSeparator(p)) {
1140                         ++n;
1141                 }
1142         }
1143         return n;
1144 }
1145
1146
1147 // returns the number of hfills in the specified row. The LyX-Hfill is
1148 // a LaTeX \hfill so that the hfills at the beginning and at the end were
1149 // ignored. This is *MUCH* more usefull than not to ignore!
1150 int LyXText::numberOfHfills(Buffer const * buf, Row const * row) const
1151 {
1152         pos_type const last = rowLast(row);
1153         pos_type first = row->pos();
1154
1155         if (first) { /* hfill *DO* count at the beginning
1156                       * of paragraphs! */
1157                 while (first <= last && row->par()->isHfill(first)) {
1158                         ++first;
1159                 }
1160         }
1161
1162         first = max(first, beginningOfMainBody(buf, row->par()));
1163         int n = 0;
1164         for (pos_type p = first; p <= last; ++p) {
1165                 // last, because the end is ignored!
1166
1167                 if (row->par()->isHfill(p)) {
1168                         ++n;
1169                 }
1170         }
1171         return n;
1172 }
1173
1174
1175 // like NumberOfHfills, but only those in the manual label!
1176 int LyXText::numberOfLabelHfills(Buffer const * buf, Row const * row) const
1177 {
1178         pos_type last = rowLast(row);
1179         pos_type first = row->pos();
1180         if (first) { /* hfill *DO* count at the beginning
1181                       * of paragraphs! */
1182                 while (first < last && row->par()->isHfill(first))
1183                         ++first;
1184         }
1185
1186         last = min(last, beginningOfMainBody(buf, row->par()));
1187         int n = 0;
1188         for (pos_type p = first; p < last; ++p) {
1189                 // last, because the end is ignored!
1190                 if (row->par()->isHfill(p)) {
1191                         ++n;
1192                 }
1193         }
1194         return n;
1195 }
1196
1197
1198 // returns true, if a expansion is needed.
1199 // Rules are given by LaTeX
1200 bool LyXText::hfillExpansion(Buffer const * buf, Row const * row_ptr,
1201                              pos_type pos) const
1202 {
1203         // by the way, is it a hfill?
1204         if (!row_ptr->par()->isHfill(pos))
1205                 return false;
1206
1207         // at the end of a row it does not count
1208         // unless another hfill exists on the line
1209         if (pos >= rowLast(row_ptr)) {
1210                 pos_type i = row_ptr->pos();
1211                 while (i < pos && !row_ptr->par()->isHfill(i)) {
1212                         ++i;
1213                 }
1214                 if (i == pos) {
1215                         return false;
1216                 }
1217         }
1218
1219         // at the beginning of a row it does not count, if it is not
1220         // the first row of a paragaph
1221         if (!row_ptr->pos())
1222                 return true;
1223
1224         // in some labels  it does not count
1225         if (textclasslist.Style(buf->params.textclass,
1226                                 row_ptr->par()->getLayout()).margintype
1227             != MARGIN_MANUAL
1228             && pos < beginningOfMainBody(buf, row_ptr->par()))
1229                 return false;
1230
1231         // if there is anything between the first char of the row and
1232         // the sepcified position that is not a newline and not a hfill,
1233         // the hfill will count, otherwise not
1234         pos_type i = row_ptr->pos();
1235         while (i < pos && (row_ptr->par()->isNewline(i)
1236                            || row_ptr->par()->isHfill(i)))
1237                 ++i;
1238
1239         return i != pos;
1240 }
1241
1242
1243 LColor::color LyXText::backgroundColor()
1244 {
1245         if (inset_owner)
1246                 return inset_owner->backgroundColor();
1247         else
1248                 return LColor::background;
1249 }
1250
1251 void LyXText::setHeightOfRow(BufferView * bview, Row * row_ptr) const
1252 {
1253         /* get the maximum ascent and the maximum descent */
1254         int asc = 0;
1255         int desc = 0;
1256         float layoutasc = 0;
1257         float layoutdesc = 0;
1258         float tmptop = 0;
1259         LyXFont tmpfont;
1260         Inset * tmpinset = 0;
1261
1262         /* ok , let us initialize the maxasc and maxdesc value.
1263          * This depends in LaTeX of the font of the last character
1264          * in the paragraph. The hack below is necessary because
1265          * of the possibility of open footnotes */
1266
1267         /* Correction: only the fontsize count. The other properties
1268            are taken from the layoutfont. Nicer on the screen :) */
1269         Paragraph * par = row_ptr->par();
1270         Paragraph * firstpar = row_ptr->par();
1271
1272         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1273                                                        firstpar->getLayout());
1274
1275         // as max get the first character of this row then it can increes but not
1276         // decrees the height. Just some point to start with so we don't have to
1277         // do the assignment below too often.
1278         LyXFont font = getFont(bview->buffer(), par, row_ptr->pos());
1279         LyXFont::FONT_SIZE const tmpsize = font.size();
1280         font = getLayoutFont(bview->buffer(), par);
1281         LyXFont::FONT_SIZE const size = font.size();
1282         font.setSize(tmpsize);
1283
1284         LyXFont labelfont = getLabelFont(bview->buffer(), par);
1285
1286         float spacing_val = 1.0;
1287         if (!row_ptr->par()->params().spacing().isDefault()) {
1288                 spacing_val = row_ptr->par()->params().spacing().getValue();
1289         } else {
1290                 spacing_val = bview->buffer()->params.spacing.getValue();
1291         }
1292         //lyxerr << "spacing_val = " << spacing_val << endl;
1293
1294         int maxasc = int(lyxfont::maxAscent(font) *
1295                          layout.spacing.getValue() *
1296                          spacing_val);
1297         int maxdesc = int(lyxfont::maxDescent(font) *
1298                           layout.spacing.getValue() *
1299                           spacing_val);
1300         pos_type const pos_end = rowLast(row_ptr);
1301         int labeladdon = 0;
1302         int maxwidth = 0;
1303
1304         // Check if any insets are larger
1305         for (pos_type pos = row_ptr->pos(); pos <= pos_end; ++pos) {
1306                 if (row_ptr->par()->isInset(pos)) {
1307                         tmpfont = getFont(bview->buffer(), row_ptr->par(), pos);
1308                         tmpinset = row_ptr->par()->getInset(pos);
1309                         if (tmpinset) {
1310 #if 1 // this is needed for deep update on initialitation
1311                                 tmpinset->update(bview, tmpfont);
1312 #endif
1313                                 asc = tmpinset->ascent(bview, tmpfont);
1314                                 desc = tmpinset->descent(bview, tmpfont);
1315                                 maxwidth += tmpinset->width(bview, tmpfont);
1316                                 maxasc = max(maxasc, asc);
1317                                 maxdesc = max(maxdesc, desc);
1318                         }
1319                 } else {
1320                         maxwidth += singleWidth(bview, row_ptr->par(), pos);
1321                 }
1322         }
1323
1324         // Check if any custom fonts are larger (Asger)
1325         // This is not completely correct, but we can live with the small,
1326         // cosmetic error for now.
1327         LyXFont::FONT_SIZE maxsize =
1328                 row_ptr->par()->highestFontInRange(row_ptr->pos(), pos_end, size);
1329         if (maxsize > font.size()) {
1330                 font.setSize(maxsize);
1331
1332                 asc = lyxfont::maxAscent(font);
1333                 desc = lyxfont::maxDescent(font);
1334                 if (asc > maxasc)
1335                         maxasc = asc;
1336                 if (desc > maxdesc)
1337                         maxdesc = desc;
1338         }
1339
1340         // This is nicer with box insets:
1341         ++maxasc;
1342         ++maxdesc;
1343
1344         row_ptr->ascent_of_text(maxasc);
1345
1346         // is it a top line?
1347         if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
1348
1349                 // some parksips VERY EASY IMPLEMENTATION
1350                 if (bview->buffer()->params.paragraph_separation ==
1351                         BufferParams::PARSEP_SKIP)
1352                 {
1353                         if (layout.isParagraph()
1354                                 && firstpar->getDepth() == 0
1355                                 && firstpar->previous())
1356                         {
1357                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1358                         } else if (firstpar->previous() &&
1359                                    textclasslist.Style(bview->buffer()->params.textclass,
1360                                                        firstpar->previous()->
1361                                                        getLayout()).isParagraph() &&
1362                                    firstpar->previous()->getDepth() == 0)
1363                         {
1364                                 // is it right to use defskip here too? (AS)
1365                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1366                         }
1367                 }
1368
1369                 // the paper margins
1370                 if (!row_ptr->par()->previous() && bv_owner)
1371                         maxasc += LYX_PAPER_MARGIN;
1372
1373                 // add the vertical spaces, that the user added
1374                 maxasc += getLengthMarkerHeight(bview, firstpar->params().spaceTop());
1375
1376                 // do not forget the DTP-lines!
1377                 // there height depends on the font of the nearest character
1378                 if (firstpar->params().lineTop())
1379                         maxasc += 2 * lyxfont::ascent('x', getFont(bview->buffer(),
1380                                                                    firstpar, 0));
1381
1382                 // and now the pagebreaks
1383                 if (firstpar->params().pagebreakTop())
1384                         maxasc += 3 * defaultHeight();
1385
1386                 // This is special code for the chapter, since the label of this
1387                 // layout is printed in an extra row
1388                 if (layout.labeltype == LABEL_COUNTER_CHAPTER
1389                         && bview->buffer()->params.secnumdepth >= 0)
1390                 {
1391                         float spacing_val = 1.0;
1392                         if (!row_ptr->par()->params().spacing().isDefault()) {
1393                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1394                         } else {
1395                                 spacing_val = bview->buffer()->params.spacing.getValue();
1396                         }
1397
1398                         labeladdon = int(lyxfont::maxDescent(labelfont) *
1399                                          layout.spacing.getValue() *
1400                                          spacing_val)
1401                                 + int(lyxfont::maxAscent(labelfont) *
1402                                       layout.spacing.getValue() *
1403                                       spacing_val);
1404                 }
1405
1406                 // special code for the top label
1407                 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1408                      || layout.labeltype == LABEL_BIBLIO
1409                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1410                     && row_ptr->par()->isFirstInSequence()
1411                     && !row_ptr->par()->getLabelstring().empty())
1412                 {
1413                         float spacing_val = 1.0;
1414                         if (!row_ptr->par()->params().spacing().isDefault()) {
1415                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1416                         } else {
1417                                 spacing_val = bview->buffer()->params.spacing.getValue();
1418                         }
1419
1420                         labeladdon = int(
1421                                 (lyxfont::maxAscent(labelfont) *
1422                                  layout.spacing.getValue() *
1423                                  spacing_val)
1424                                 +(lyxfont::maxDescent(labelfont) *
1425                                   layout.spacing.getValue() *
1426                                   spacing_val)
1427                                 + layout.topsep * defaultHeight()
1428                                 + layout.labelbottomsep *  defaultHeight());
1429                 }
1430
1431                 // and now the layout spaces, for example before and after a section,
1432                 // or between the items of a itemize or enumerate environment
1433
1434                 if (!firstpar->params().pagebreakTop()) {
1435                         Paragraph * prev = row_ptr->par()->previous();
1436                         if (prev)
1437                                 prev = row_ptr->par()->depthHook(row_ptr->par()->getDepth());
1438                         if (prev && prev->getLayout() == firstpar->getLayout() &&
1439                                 prev->getDepth() == firstpar->getDepth() &&
1440                                 prev->getLabelWidthString() == firstpar->getLabelWidthString())
1441                         {
1442                                 layoutasc = (layout.itemsep * defaultHeight());
1443                         } else if (row_ptr->previous()) {
1444                                 tmptop = layout.topsep;
1445
1446                                 if (row_ptr->previous()->par()->getDepth() >= row_ptr->par()->getDepth())
1447                                         tmptop -= textclasslist.Style(bview->buffer()->params.textclass,
1448                                                                       row_ptr->previous()->par()->
1449                                                                       getLayout()).bottomsep;
1450
1451                                 if (tmptop > 0)
1452                                         layoutasc = (tmptop * defaultHeight());
1453                         } else if (row_ptr->par()->params().lineTop()) {
1454                                 tmptop = layout.topsep;
1455
1456                                 if (tmptop > 0)
1457                                         layoutasc = (tmptop * defaultHeight());
1458                         }
1459
1460                         prev = row_ptr->par()->outerHook();
1461                         if (prev)  {
1462                                 maxasc += int(textclasslist.Style(bview->buffer()->params.textclass,
1463                                               prev->getLayout()).parsep * defaultHeight());
1464                         } else {
1465                                 if (firstpar->previous() &&
1466                                         firstpar->previous()->getDepth() == 0 &&
1467                                         firstpar->previous()->getLayout() !=
1468                                         firstpar->getLayout())
1469                                 {
1470                                         // avoid parsep
1471                                 } else if (firstpar->previous()) {
1472                                         maxasc += int(layout.parsep * defaultHeight());
1473                                 }
1474                         }
1475                 }
1476         }
1477
1478         // is it a bottom line?
1479         if (row_ptr->par() == par
1480                 && (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par()))
1481         {
1482                 // the paper margins
1483                 if (!par->next() && bv_owner)
1484                         maxdesc += LYX_PAPER_MARGIN;
1485
1486                 // add the vertical spaces, that the user added
1487                 maxdesc += getLengthMarkerHeight(bview, firstpar->params().spaceBottom());
1488
1489                 // do not forget the DTP-lines!
1490                 // there height depends on the font of the nearest character
1491                 if (firstpar->params().lineBottom())
1492                         maxdesc += 2 * lyxfont::ascent('x',
1493                                                        getFont(bview->buffer(),
1494                                                                par,
1495                                                                max(pos_type(0), par->size() - 1)));
1496
1497                 // and now the pagebreaks
1498                 if (firstpar->params().pagebreakBottom())
1499                         maxdesc += 3 * defaultHeight();
1500
1501                 // and now the layout spaces, for example before and after
1502                 // a section, or between the items of a itemize or enumerate
1503                 // environment
1504                 if (!firstpar->params().pagebreakBottom()
1505                     && row_ptr->par()->next()) {
1506                         Paragraph * nextpar = row_ptr->par()->next();
1507                         Paragraph * comparepar = row_ptr->par();
1508                         float usual = 0;
1509                         float unusual = 0;
1510
1511                         if (comparepar->getDepth() > nextpar->getDepth()) {
1512                                 usual = (textclasslist.Style(bview->buffer()->params.textclass,
1513                                          comparepar->getLayout()).bottomsep * defaultHeight());
1514                                 comparepar = comparepar->depthHook(nextpar->getDepth());
1515                                 if (comparepar->getLayout()!= nextpar->getLayout()
1516                                         || nextpar->getLabelWidthString() !=
1517                                         comparepar->getLabelWidthString())
1518                                 {
1519                                         unusual = (textclasslist.Style(bview->buffer()->params.textclass,
1520                                                    comparepar->getLayout()).bottomsep * defaultHeight());
1521                                 }
1522                                 if (unusual > usual)
1523                                         layoutdesc = unusual;
1524                                 else
1525                                         layoutdesc = usual;
1526                         } else if (comparepar->getDepth() ==  nextpar->getDepth()) {
1527
1528                                 if (comparepar->getLayout()!= nextpar->getLayout()
1529                                         || nextpar->getLabelWidthString() !=
1530                                         comparepar->getLabelWidthString())
1531                                         layoutdesc = int(textclasslist.Style(bview->buffer()->params.textclass,
1532                                                                                                                  comparepar->getLayout()).bottomsep * defaultHeight());
1533                         }
1534                 }
1535         }
1536
1537         // incalculate the layout spaces
1538         maxasc += int(layoutasc * 2 / (2 + firstpar->getDepth()));
1539         maxdesc += int(layoutdesc * 2 / (2 + firstpar->getDepth()));
1540
1541         // calculate the new height of the text
1542         height -= row_ptr->height();
1543
1544         row_ptr->height(maxasc + maxdesc + labeladdon);
1545         row_ptr->baseline(maxasc + labeladdon);
1546
1547         height += row_ptr->height();
1548         float x = 0;
1549         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
1550                 float dummy;
1551                 prepareToPrint(bview, row_ptr, x, dummy, dummy, dummy, false);
1552         }
1553         row_ptr->width(int(maxwidth + x));
1554         if (inset_owner) {
1555                 Row * r = firstrow;
1556                 width = max(0,workWidth(bview));
1557                 while (r) {
1558                         if (r->width() > width)
1559                                 width = r->width();
1560                         r = r->next();
1561                 }
1562         }
1563 }
1564
1565
1566 /* Appends the implicit specified paragraph behind the specified row,
1567  * start at the implicit given position */
1568 void LyXText::appendParagraph(BufferView * bview, Row * row) const
1569 {
1570         bool not_ready = true;
1571
1572         // The last character position of a paragraph is an invariant so we can
1573         // safely get it here. (Asger)
1574         pos_type const lastposition = row->par()->size();
1575         do {
1576                 // Get the next breakpoint
1577                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1578
1579                 Row * tmprow = row;
1580
1581                 // Insert the new row
1582                 if (z < lastposition) {
1583                         ++z;
1584                         insertRow(row, row->par(), z);
1585                         row = row->next();
1586
1587                         row->height(0);
1588                 } else
1589                         not_ready = false;
1590
1591                 // Set the dimensions of the row
1592                 // fixed fill setting now by calling inset->update() in
1593                 // SingleWidth when needed!
1594                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1595                 setHeightOfRow(bview, tmprow);
1596
1597         } while (not_ready);
1598 }
1599
1600
1601 void LyXText::breakAgain(BufferView * bview, Row * row) const
1602 {
1603         bool not_ready = true;
1604
1605         do  {
1606                 // get the next breakpoint
1607                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1608                 Row * tmprow = row;
1609
1610                 if (z < row->par()->size()) {
1611                         if (!row->next() || (row->next() && row->next()->par() != row->par())) {
1612                                 // insert a new row
1613                                 ++z;
1614                                 insertRow(row, row->par(), z);
1615                                 row = row->next();
1616                                 row->height(0);
1617                         } else  {
1618                                 row = row->next();
1619                                 ++z;
1620                                 if (row->pos() == z)
1621                                         not_ready = false;     // the rest will not change
1622                                 else {
1623                                         row->pos(z);
1624                                 }
1625                         }
1626                 } else {
1627                         /* if there are some rows too much, delete them */
1628                         /* only if you broke the whole paragraph! */
1629                         Row * tmprow2 = row;
1630                         while (tmprow2->next() && tmprow2->next()->par() == row->par()) {
1631                                 tmprow2 = tmprow2->next();
1632                         }
1633                         while (tmprow2 != row) {
1634                                 tmprow2 = tmprow2->previous();
1635                                 removeRow(tmprow2->next());
1636                         }
1637                         not_ready = false;
1638                 }
1639
1640                 /* set the dimensions of the row */
1641                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1642                 setHeightOfRow(bview, tmprow);
1643         } while (not_ready);
1644 }
1645
1646
1647 // this is just a little changed version of break again
1648 void LyXText::breakAgainOneRow(BufferView * bview, Row * row)
1649 {
1650         // get the next breakpoint
1651         pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1652         Row * tmprow = row;
1653
1654         if (z < row->par()->size()) {
1655                 if (!row->next()
1656                     || (row->next() && row->next()->par() != row->par())) {
1657                         /* insert a new row */
1658                         ++z;
1659                         insertRow(row, row->par(), z);
1660                         row = row->next();
1661                         row->height(0);
1662                 } else  {
1663                         row= row->next();
1664                         ++z;
1665                         if (row->pos() != z)
1666                                 row->pos(z);
1667                 }
1668         } else {
1669                 // if there are some rows too much, delete them
1670                 // only if you broke the whole paragraph!
1671                 Row * tmprow2 = row;
1672                 while (tmprow2->next()
1673                        && tmprow2->next()->par() == row->par()) {
1674                         tmprow2 = tmprow2->next();
1675                 }
1676                 while (tmprow2 != row) {
1677                         tmprow2 = tmprow2->previous();
1678                         removeRow(tmprow2->next());
1679                 }
1680         }
1681
1682         // set the dimensions of the row
1683         tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1684         setHeightOfRow(bview, tmprow);
1685 }
1686
1687
1688 void LyXText::breakParagraph(BufferView * bview, char keep_layout)
1689 {
1690    LyXLayout const & layout =
1691            textclasslist.Style(bview->buffer()->params.textclass,
1692                                cursor.par()->getLayout());
1693
1694    // this is only allowed, if the current paragraph is not empty or caption
1695    if ((cursor.par()->size() <= 0)
1696        && layout.labeltype!= LABEL_SENSITIVE)
1697            return;
1698
1699    setUndo(bview, Undo::INSERT,cursor.par(),cursor.par()->next());
1700
1701    // Always break behind a space
1702    //
1703    // It is better to erase the space (Dekel)
1704    if (cursor.pos() < cursor.par()->size()
1705        && cursor.par()->isLineSeparator(cursor.pos()))
1706            cursor.par()->erase(cursor.pos());
1707            // cursor.pos(cursor.pos() + 1);
1708
1709    // break the paragraph
1710    if (keep_layout)
1711      keep_layout = 2;
1712    else
1713      keep_layout = layout.isEnvironment();
1714    cursor.par()->breakParagraph(bview->buffer()->params, cursor.pos(),
1715                                 keep_layout);
1716
1717    // well this is the caption hack since one caption is really enough
1718    if (layout.labeltype == LABEL_SENSITIVE) {
1719      if (!cursor.pos())
1720              // set to standard-layout
1721              cursor.par()->setLayout(0);
1722      else
1723              // set to standard-layout
1724              cursor.par()->next()->setLayout(0);
1725    }
1726
1727    /* if the cursor is at the beginning of a row without prior newline,
1728     * move one row up!
1729     * This touches only the screen-update. Otherwise we would may have
1730     * an empty row on the screen */
1731    if (cursor.pos() && !cursor.row()->par()->isNewline(cursor.row()->pos() - 1)
1732        && cursor.row()->pos() == cursor.pos()) {
1733            cursorLeft(bview);
1734    }
1735
1736    status(bview, LyXText::NEED_MORE_REFRESH);
1737    refresh_row = cursor.row();
1738    refresh_y = cursor.y() - cursor.row()->baseline();
1739
1740    // Do not forget the special right address boxes
1741    if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
1742       while (refresh_row->previous() &&
1743              refresh_row->previous()->par() == refresh_row->par()) {
1744               refresh_row = refresh_row->previous();
1745               refresh_y -= refresh_row->height();
1746       }
1747    }
1748    removeParagraph(cursor.row());
1749
1750    // set the dimensions of the cursor row
1751    cursor.row()->fill(fill(bview, cursor.row(), workWidth(bview)));
1752
1753    setHeightOfRow(bview, cursor.row());
1754
1755    while (cursor.par()->next()->size()
1756           && cursor.par()->next()->isNewline(0))
1757            cursor.par()->next()->erase(0);
1758
1759    insertParagraph(bview, cursor.par()->next(), cursor.row());
1760
1761    updateCounters(bview, cursor.row()->previous());
1762
1763    /* This check is necessary. Otherwise the new empty paragraph will
1764     * be deleted automatically. And it is more friendly for the user! */
1765    if (cursor.pos())
1766            setCursor(bview, cursor.par()->next(), 0);
1767    else
1768            setCursor(bview, cursor.par(), 0);
1769
1770    if (cursor.row()->next())
1771            breakAgain(bview, cursor.row()->next());
1772
1773    need_break_row = 0;
1774 }
1775
1776
1777 // Just a macro to make some thing easier.
1778 void LyXText::redoParagraph(BufferView * bview) const
1779 {
1780         clearSelection();
1781         redoParagraphs(bview, cursor, cursor.par()->next());
1782         setCursorIntern(bview, cursor.par(), cursor.pos());
1783 }
1784
1785
1786 /* insert a character, moves all the following breaks in the
1787  * same Paragraph one to the right and make a rebreak */
1788 void LyXText::insertChar(BufferView * bview, char c)
1789 {
1790         setUndo(bview, Undo::INSERT,
1791                 cursor.par(), cursor.par()->next());
1792
1793         // When the free-spacing option is set for the current layout,
1794         // disable the double-space checking
1795
1796         bool const freeSpacing =
1797                 textclasslist.Style(bview->buffer()->params.textclass,
1798                                cursor.row()->par()->getLayout()).free_spacing ||
1799                 cursor.row()->par()->isFreeSpacing();
1800
1801
1802         if (lyxrc.auto_number) {
1803                 static string const number_operators = "+-/*";
1804                 static string const number_unary_operators = "+-";
1805                 static string const number_seperators = ".,:";
1806
1807                 if (current_font.number() == LyXFont::ON) {
1808                         if (!IsDigit(c) && !contains(number_operators, c) &&
1809                             !(contains(number_seperators, c) &&
1810                               cursor.pos() >= 1 &&
1811                               cursor.pos() < cursor.par()->size() &&
1812                               getFont(bview->buffer(),
1813                                       cursor.par(),
1814                                       cursor.pos()).number() == LyXFont::ON &&
1815                               getFont(bview->buffer(),
1816                                       cursor.par(),
1817                                       cursor.pos() - 1).number() == LyXFont::ON)
1818                             )
1819                                 number(bview); // Set current_font.number to OFF
1820                 } else if (IsDigit(c) &&
1821                            real_current_font.isVisibleRightToLeft()) {
1822                         number(bview); // Set current_font.number to ON
1823
1824                         if (cursor.pos() > 0) {
1825                                 char const c = cursor.par()->getChar(cursor.pos() - 1);
1826                                 if (contains(number_unary_operators, c) &&
1827                                     (cursor.pos() == 1 ||
1828                                      cursor.par()->isSeparator(cursor.pos() - 2) ||
1829                                      cursor.par()->isNewline(cursor.pos() - 2) )
1830                                    ) {
1831                                         setCharFont(bview->buffer(),
1832                                                     cursor.par(),
1833                                                     cursor.pos() - 1,
1834                                                     current_font);
1835                                 } else if (contains(number_seperators, c) &&
1836                                            cursor.pos() >= 2 &&
1837                                            getFont(bview->buffer(),
1838                                                    cursor.par(),
1839                                                    cursor.pos() - 2).number() == LyXFont::ON) {
1840                                         setCharFont(bview->buffer(),
1841                                                     cursor.par(),
1842                                                     cursor.pos() - 1,
1843                                                     current_font);
1844                                 }
1845                         }
1846                 }
1847         }
1848
1849
1850         /* First check, if there will be two blanks together or a blank at
1851           the beginning of a paragraph.
1852           I decided to handle blanks like normal characters, the main
1853           difference are the special checks when calculating the row.fill
1854           (blank does not count at the end of a row) and the check here */
1855
1856         // The bug is triggered when we type in a description environment:
1857         // The current_font is not changed when we go from label to main text
1858         // and it should (along with realtmpfont) when we type the space.
1859         // CHECK There is a bug here! (Asger)
1860
1861         LyXFont realtmpfont = real_current_font;
1862         LyXFont rawtmpfont = current_font;  /* store the current font.
1863                                      * This is because of the use
1864                                      * of cursor movements. The moving
1865                                      * cursor would refresh the
1866                                      * current font */
1867
1868         // Get the font that is used to calculate the baselineskip
1869         pos_type const lastpos = cursor.par()->size();
1870         LyXFont rawparfont =
1871                 cursor.par()->getFontSettings(bview->buffer()->params,
1872                                               lastpos - 1);
1873
1874         bool jumped_over_space = false;
1875
1876         if (!freeSpacing && IsLineSeparatorChar(c)) {
1877                 if ((cursor.pos() > 0
1878                      && cursor.par()->isLineSeparator(cursor.pos() - 1))
1879                     || (cursor.pos() > 0
1880                         && cursor.par()->isNewline(cursor.pos() - 1))
1881                     || (cursor.pos() == 0)) {
1882                         static bool sent_space_message = false;
1883                         if (!sent_space_message) {
1884                                 if (cursor.pos() == 0)
1885                                         bview->owner()->message(_("You cannot insert a space at the beginning of a paragraph.  Please read the Tutorial."));
1886                                 else
1887                                         bview->owner()->message(_("You cannot type two spaces this way.  Please read the Tutorial."));
1888                                 sent_space_message = true;
1889                         }
1890                         charInserted();
1891                         return;
1892                 }
1893         } else if (IsNewlineChar(c)) {
1894                 if (cursor.par() == cursor.par()
1895                     && cursor.pos() <= beginningOfMainBody(bview->buffer(), cursor.par())) {
1896                         charInserted();
1897                         return;
1898                 }
1899                 /* No newline at first position
1900                  * of a paragraph or behind labels.
1901                  * TeX does not allow that. */
1902
1903                 if (cursor.pos() < cursor.par()->size() &&
1904                     cursor.par()->isLineSeparator(cursor.pos()))
1905                         // newline always after a blank!
1906                         cursorRight(bview);
1907                 cursor.row()->fill(-1);        // to force a new break
1908         }
1909
1910         // the display inset stuff
1911         if (cursor.row()->par()->isInset(cursor.row()->pos())) {
1912                 Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
1913                 if (inset && (inset->display() || inset->needFullRow())) {
1914                         // force a new break
1915                         cursor.row()->fill(-1); // to force a new break
1916                 }
1917         }
1918
1919         // get the cursor row fist
1920         Row * row = cursor.row();
1921         int y = cursor.y() - row->baseline();
1922         if (c != Paragraph::META_INSET) /* Here case LyXText::InsertInset
1923                                             * already insertet the character */
1924                 cursor.par()->insertChar(cursor.pos(), c);
1925         setCharFont(bview->buffer(), cursor.par(), cursor.pos(), rawtmpfont);
1926
1927         if (!jumped_over_space) {
1928                 // refresh the positions
1929                 Row * tmprow = row;
1930                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
1931                         tmprow = tmprow->next();
1932                         tmprow->pos(tmprow->pos() + 1);
1933                 }
1934         }
1935
1936         // Is there a break one row above
1937         if ((cursor.par()->isLineSeparator(cursor.pos())
1938              || cursor.par()->isNewline(cursor.pos())
1939                  || ((cursor.pos() < cursor.par()->size()) &&
1940                          cursor.par()->isInset(cursor.pos()+1))
1941              || cursor.row()->fill() == -1)
1942             && row->previous() && row->previous()->par() == row->par()) {
1943                 pos_type z = nextBreakPoint(bview,
1944                                                            row->previous(),
1945                                                            workWidth(bview));
1946                 if (z >= row->pos()) {
1947                         row->pos(z + 1);
1948
1949                         // set the dimensions of the row above
1950                         row->previous()->fill(fill(bview,
1951                                                    row->previous(),
1952                                                    workWidth(bview)));
1953
1954                         setHeightOfRow(bview, row->previous());
1955
1956                         y -= row->previous()->height();
1957                         refresh_y = y;
1958                         refresh_row = row->previous();
1959                         status(bview, LyXText::NEED_MORE_REFRESH);
1960
1961                         breakAgainOneRow(bview, row);
1962
1963                         current_font = rawtmpfont;
1964                         real_current_font = realtmpfont;
1965                         setCursor(bview, cursor.par(), cursor.pos() + 1,
1966                                   false, cursor.boundary());
1967                         // cursor MUST be in row now.
1968
1969                         if (row->next() && row->next()->par() == row->par())
1970                                 need_break_row = row->next();
1971                         else
1972                                 need_break_row = 0;
1973
1974                         // check, wether the last characters font has changed.
1975                         if (cursor.pos() && cursor.pos() == cursor.par()->size()
1976                             && rawparfont != rawtmpfont)
1977                                 redoHeightOfParagraph(bview, cursor);
1978
1979                         charInserted();
1980                         return;
1981                 }
1982         }
1983
1984         // recalculate the fill of the row
1985         if (row->fill() >= 0)  /* needed because a newline
1986                               * will set fill to -1. Otherwise
1987                               * we would not get a rebreak! */
1988                 row->fill(fill(bview, row, workWidth(bview)));
1989         if (row->fill() < 0) {
1990                 refresh_y = y;
1991                 refresh_row = row;
1992                 refresh_x = cursor.x();
1993                 refresh_pos = cursor.pos();
1994                 status(bview, LyXText::NEED_MORE_REFRESH);
1995                 breakAgainOneRow(bview, row);
1996                 // will the cursor be in another row now?
1997                 if (rowLast(row) <= cursor.pos() + 1 && row->next()) {
1998                         if (row->next() && row->next()->par() == row->par())
1999                                 // this should always be true
2000                                 row = row->next();
2001                         breakAgainOneRow(bview, row);
2002                 }
2003                 current_font = rawtmpfont;
2004                 real_current_font = realtmpfont;
2005
2006                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
2007                           cursor.boundary());
2008                 if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
2009                     != cursor.boundary())
2010                         setCursor(bview, cursor.par(), cursor.pos(), false,
2011                           !cursor.boundary());
2012                 if (row->next() && row->next()->par() == row->par())
2013                         need_break_row = row->next();
2014                 else
2015                         need_break_row = 0;
2016         } else {
2017                 refresh_y = y;
2018                 refresh_x = cursor.x();
2019                 refresh_row = row;
2020                 refresh_pos = cursor.pos();
2021
2022                 int const tmpheight = row->height();
2023                 setHeightOfRow(bview, row);
2024                 if (tmpheight == row->height())
2025                         status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
2026                 else
2027                         status(bview, LyXText::NEED_MORE_REFRESH);
2028
2029                 current_font = rawtmpfont;
2030                 real_current_font = realtmpfont;
2031                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
2032                           cursor.boundary());
2033         }
2034
2035         // check, wether the last characters font has changed.
2036         if (cursor.pos() && cursor.pos() == cursor.par()->size()
2037             && rawparfont != rawtmpfont) {
2038                 redoHeightOfParagraph(bview, cursor);
2039         } else {
2040                 // now the special right address boxes
2041                 if (textclasslist.Style(bview->buffer()->params.textclass,
2042                                    cursor.par()->getLayout()).margintype
2043                     == MARGIN_RIGHT_ADDRESS_BOX) {
2044                         redoDrawingOfParagraph(bview, cursor);
2045                 }
2046         }
2047
2048         charInserted();
2049 }
2050
2051
2052 void LyXText::charInserted()
2053 {
2054         // Here we could call FinishUndo for every 20 characters inserted.
2055         // This is from my experience how emacs does it.
2056         static unsigned int counter;
2057         if (counter < 20) {
2058                 ++counter;
2059         } else {
2060                 finishUndo();
2061                 counter = 0;
2062         }
2063 }
2064
2065
2066 void LyXText::prepareToPrint(BufferView * bview,
2067                              Row * row, float & x,
2068                              float & fill_separator,
2069                              float & fill_hfill,
2070                              float & fill_label_hfill,
2071                              bool bidi) const
2072 {
2073         float nlh;
2074         float ns;
2075
2076         float w = row->fill();
2077         fill_hfill = 0;
2078         fill_label_hfill = 0;
2079         fill_separator = 0;
2080         fill_label_hfill = 0;
2081
2082         bool const is_rtl =
2083                 row->par()->isRightToLeftPar(bview->buffer()->params);
2084         if (is_rtl) {
2085                 x = (workWidth(bview) > 0)
2086                         ? rightMargin(bview->buffer(), row) : 0;
2087         } else
2088                 x = (workWidth(bview) > 0) ? leftMargin(bview, row) : 0;
2089
2090         // is there a manual margin with a manual label
2091         if (textclasslist.Style(bview->buffer()->params.textclass,
2092                            row->par()->getLayout()).margintype == MARGIN_MANUAL
2093             && textclasslist.Style(bview->buffer()->params.textclass,
2094                               row->par()->getLayout()).labeltype == LABEL_MANUAL) {
2095
2096                 /* one more since labels are left aligned */
2097                 nlh = numberOfLabelHfills(bview->buffer(), row) + 1;
2098                 if (nlh && !row->par()->getLabelWidthString().empty()) {
2099                         fill_label_hfill = labelFill(bview, row) / nlh;
2100                 }
2101         }
2102
2103         // are there any hfills in the row?
2104         float const nh = numberOfHfills(bview->buffer(), row);
2105
2106         if (nh) {
2107                 if (w > 0)
2108                         fill_hfill = w / nh;
2109         } else  {
2110                 // is it block, flushleft or flushright?
2111                 // set x how you need it
2112                 int align;
2113                 if (row->par()->params().align() == LYX_ALIGN_LAYOUT) {
2114                         align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->getLayout()).align;
2115                 } else {
2116                         align = row->par()->params().align();
2117                 }
2118
2119                 // center displayed insets
2120                 Inset * inset;
2121                 if (row->par()->isInset(row->pos())
2122                     && (inset=row->par()->getInset(row->pos()))
2123                     && (inset->display())) // || (inset->scroll() < 0)))
2124                     align = (inset->lyxCode() == Inset::MATHMACRO_CODE)
2125                         ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
2126
2127                 switch (align) {
2128             case LYX_ALIGN_BLOCK:
2129                         ns = numberOfSeparators(bview->buffer(), row);
2130                         if (ns && row->next() && row->next()->par() == row->par() &&
2131                             !(row->next()->par()->isNewline(row->next()->pos() - 1))
2132                             && !(row->next()->par()->isInset(row->next()->pos())
2133                                  && row->next()->par()->getInset(row->next()->pos())
2134                                  && row->next()->par()->getInset(row->next()->pos())->display())
2135                                 )
2136                         {
2137                                 fill_separator = w / ns;
2138                         } else if (is_rtl) {
2139                                 x += w;
2140                         }
2141                         break;
2142             case LYX_ALIGN_RIGHT:
2143                         x += w;
2144                         break;
2145             case LYX_ALIGN_CENTER:
2146                         x += w / 2;
2147                         break;
2148                 }
2149         }
2150         if (!bidi)
2151                 return;
2152
2153         computeBidiTables(bview->buffer(), row);
2154         if (is_rtl) {
2155                 pos_type main_body =
2156                         beginningOfMainBody(bview->buffer(), row->par());
2157                 pos_type last = rowLast(row);
2158
2159                 if (main_body > 0 &&
2160                     (main_body-1 > last ||
2161                      !row->par()->isLineSeparator(main_body-1))) {
2162                         LyXLayout const & layout =
2163                                 textclasslist.Style(bview->buffer()->params.textclass,
2164                                                     row->par()->getLayout());
2165                         x += lyxfont::width(layout.labelsep,
2166                                             getLabelFont(bview->buffer(), row->par()));
2167                         if (main_body-1 <= last)
2168                                 x += fill_label_hfill;
2169                 }
2170         }
2171 }
2172
2173 /* important for the screen */
2174
2175
2176 /* the cursor set functions have a special mechanism. When they
2177 * realize, that you left an empty paragraph, they will delete it.
2178 * They also delete the corresponding row */
2179
2180 void LyXText::cursorRightOneWord(BufferView * bview) const
2181 {
2182         // treat floats, HFills and Insets as words
2183         LyXCursor tmpcursor = cursor;
2184         // CHECK See comment on top of text.C
2185
2186         if (tmpcursor.pos() == tmpcursor.par()->size()
2187             && tmpcursor.par()->next()) {
2188                         tmpcursor.par(tmpcursor.par()->next());
2189                         tmpcursor.pos(0);
2190         } else {
2191                 int steps = 0;
2192
2193                 // Skip through initial nonword stuff.
2194                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2195                        ! tmpcursor.par()->isWord(tmpcursor.pos())) {
2196                   //    printf("Current pos1 %d", tmpcursor.pos()) ;
2197                         tmpcursor.pos(tmpcursor.pos() + 1);
2198                         ++steps;
2199                 }
2200                 // Advance through word.
2201                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2202                         tmpcursor.par()->isWord( tmpcursor.pos())) {
2203                   //     printf("Current pos2 %d", tmpcursor.pos()) ;
2204                         tmpcursor.pos(tmpcursor.pos() + 1);
2205                         ++steps;
2206                 }
2207         }
2208         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2209 }
2210
2211
2212 void LyXText::cursorTab(BufferView * bview) const
2213 {
2214     LyXCursor tmpcursor = cursor;
2215     while (tmpcursor.pos() < tmpcursor.par()->size()
2216            && !tmpcursor.par()->isNewline(tmpcursor.pos()))
2217         tmpcursor.pos(tmpcursor.pos() + 1);
2218
2219     if (tmpcursor.pos() == tmpcursor.par()->size()){
2220         if (tmpcursor.par()->next()) {
2221             tmpcursor.par(tmpcursor.par()->next());
2222             tmpcursor.pos(0);
2223         }
2224     } else
2225         tmpcursor.pos(tmpcursor.pos() + 1);
2226     setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2227 }
2228
2229
2230 /* -------> Skip initial whitespace at end of word and move cursor to *start*
2231             of prior word, not to end of next prior word. */
2232
2233 void LyXText::cursorLeftOneWord(BufferView * bview)  const
2234 {
2235         LyXCursor tmpcursor = cursor;
2236         cursorLeftOneWord(tmpcursor);
2237         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2238 }
2239
2240 void LyXText::cursorLeftOneWord(LyXCursor  & cur)  const
2241 {
2242         // treat HFills, floats and Insets as words
2243         cur = cursor;
2244         while (cur.pos()
2245                && (cur.par()->isSeparator(cur.pos() - 1)
2246                    || cur.par()->isKomma(cur.pos() - 1))
2247                && !(cur.par()->isHfill(cur.pos() - 1)
2248                     || cur.par()->isInset(cur.pos() - 1)))
2249                 cur.pos(cur.pos() - 1);
2250
2251         if (cur.pos()
2252             && (cur.par()->isInset(cur.pos() - 1)
2253                 || cur.par()->isHfill(cur.pos() - 1))) {
2254                 cur.pos(cur.pos() - 1);
2255         } else if (!cur.pos()) {
2256                 if (cur.par()->previous()){
2257                         cur.par(cur.par()->previous());
2258                         cur.pos(cur.par()->size());
2259                 }
2260         } else {                // Here, cur != 0
2261                 while (cur.pos() > 0 &&
2262                        cur.par()->isWord(cur.pos()-1) )
2263                         cur.pos(cur.pos() - 1);
2264         }
2265 }
2266
2267 /* -------> Select current word. This depends on behaviour of
2268 CursorLeftOneWord(), so it is patched as well. */
2269 void LyXText::getWord(LyXCursor & from, LyXCursor & to,
2270                       word_location const loc) const
2271 {
2272         // first put the cursor where we wana start to select the word
2273         from = cursor;
2274         switch(loc) {
2275         case WHOLE_WORD_STRICT:
2276                 if (cursor.pos() == 0 || cursor.pos() == cursor.par()->size()
2277                     || cursor.par()->isSeparator(cursor.pos())
2278                     || cursor.par()->isKomma(cursor.pos())
2279                     || cursor.par()->isSeparator(cursor.pos() -1)
2280                     || cursor.par()->isKomma(cursor.pos() -1)) {
2281                         to = from;
2282                         return;
2283                 }
2284                 // no break here, we go to the next
2285
2286         case WHOLE_WORD:
2287                 // Move cursor to the beginning, when not already there.
2288                 if (from.pos() && !from.par()->isSeparator(from.pos() - 1)
2289                     && !from.par()->isKomma(from.pos() - 1))
2290                         cursorLeftOneWord(from);
2291                 break;
2292         case PREVIOUS_WORD:
2293                 // always move the cursor to the beginning of previous word
2294                 cursorLeftOneWord(from);
2295                 break;
2296         case NEXT_WORD:
2297                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet\n";
2298                 break;
2299         case PARTIAL_WORD:
2300                 break;
2301         }
2302         to = from;
2303         while (to.pos() < to.par()->size()
2304                && !to.par()->isSeparator(to.pos())
2305                && !to.par()->isKomma(to.pos())
2306                && !to.par()->isHfill(to.pos()) )
2307         {
2308                 to.pos(to.pos() + 1);
2309         }
2310 }
2311
2312
2313 void LyXText::selectWord(BufferView * bview, word_location const loc)
2314 {
2315         LyXCursor from;
2316         LyXCursor to;
2317         getWord(from, to, loc);
2318         if (cursor != from)
2319                 setCursor(bview, from.par(), from.pos());
2320         if (to == from)
2321                 return;
2322         selection.cursor = cursor;
2323         setCursor(bview, to.par(), to.pos() );
2324         setSelection(bview);
2325 }
2326
2327
2328 /* -------> Select the word currently under the cursor when no
2329         selection is currently set */
2330 bool LyXText::selectWordWhenUnderCursor(BufferView * bview,
2331                                         word_location const loc)
2332 {
2333         if (!selection.set()) {
2334                 selectWord(bview, loc);
2335                 return selection.set();
2336         }
2337         return false;
2338 }
2339
2340
2341 // This function is only used by the spellchecker for NextWord().
2342 // It doesn't handle LYX_ACCENTs and probably never will.
2343 string const LyXText::selectNextWordToSpellcheck(BufferView * bview,
2344                                                  float & value) const
2345 {
2346         if (the_locking_inset) {
2347                 string str = the_locking_inset->selectNextWordToSpellcheck(bview, value);
2348                 if (!str.empty()) {
2349                         value += float(cursor.y())/float(height);
2350                         return str;
2351                 }
2352 #warning Dekel please have a look on this one RTL? (Jug)
2353 #warning DEKEL!
2354                 // we have to go on checking so move cusor to the right
2355                 if (cursor.pos() == cursor.par()->size()) {
2356                         if (!cursor.par()->next())
2357                                 return str;
2358                         cursor.par(cursor.par()->next());
2359                         cursor.pos(0);
2360                 } else
2361                         cursor.pos(cursor.pos() + 1);
2362         }
2363         Paragraph * tmppar = cursor.par();
2364
2365         // If this is not the very first word, skip rest of
2366         // current word because we are probably in the middle
2367         // of a word if there is text here.
2368         if (cursor.pos() || cursor.par()->previous()) {
2369                 while (cursor.pos() < cursor.par()->size()
2370                        && cursor.par()->isLetter(cursor.pos()))
2371                         cursor.pos(cursor.pos() + 1);
2372         }
2373
2374         // Now, skip until we have real text (will jump paragraphs)
2375         while ((cursor.par()->size() > cursor.pos()
2376                && (!cursor.par()->isLetter(cursor.pos()))
2377                && (!cursor.par()->isInset(cursor.pos()) ||
2378                            !cursor.par()->getInset(cursor.pos())->allowSpellcheck()))
2379                || (cursor.par()->size() == cursor.pos()
2380                    && cursor.par()->next()))
2381         {
2382                 if (cursor.pos() == cursor.par()->size()) {
2383                         cursor.par(cursor.par()->next());
2384                         cursor.pos(0);
2385                 } else
2386                         cursor.pos(cursor.pos() + 1);
2387         }
2388
2389         // now check if we hit an inset so it has to be a inset containing text!
2390         if (cursor.pos() < cursor.par()->size() &&
2391             cursor.par()->isInset(cursor.pos()))
2392         {
2393                 // lock the inset!
2394                 cursor.par()->getInset(cursor.pos())->edit(bview);
2395                 // now call us again to do the above trick
2396                 // but obviously we have to start from down below ;)
2397                 return bview->text->selectNextWordToSpellcheck(bview, value);
2398         }
2399
2400         // Update the value if we changed paragraphs
2401         if (cursor.par() != tmppar){
2402                 setCursor(bview, cursor.par(), cursor.pos());
2403                 value = float(cursor.y())/float(height);
2404         }
2405
2406         // Start the selection from here
2407         selection.cursor = cursor;
2408
2409         // and find the end of the word (insets like optional hyphens
2410         // and ligature break are part of a word)
2411         while (cursor.pos() < cursor.par()->size()
2412                && (cursor.par()->isLetter(cursor.pos())))
2413                 cursor.pos(cursor.pos() + 1);
2414
2415         // Finally, we copy the word to a string and return it
2416         string str;
2417         if (selection.cursor.pos() < cursor.pos()) {
2418                 pos_type i;
2419                 for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
2420                         if (!cursor.par()->isInset(i))
2421                                 str += cursor.par()->getChar(i);
2422                 }
2423         }
2424         return str;
2425 }
2426
2427
2428 // This one is also only for the spellchecker
2429 void LyXText::selectSelectedWord(BufferView * bview)
2430 {
2431         if (the_locking_inset) {
2432                 the_locking_inset->selectSelectedWord(bview);
2433                 return;
2434         }
2435         // move cursor to the beginning
2436         setCursor(bview, selection.cursor.par(), selection.cursor.pos());
2437
2438         // set the sel cursor
2439         selection.cursor = cursor;
2440
2441         // now find the end of the word
2442         while (cursor.pos() < cursor.par()->size()
2443                && (cursor.par()->isLetter(cursor.pos())))
2444                 cursor.pos(cursor.pos() + 1);
2445
2446         setCursor(bview, cursor.par(), cursor.pos());
2447
2448         // finally set the selection
2449         setSelection(bview);
2450 }
2451
2452
2453 /* -------> Delete from cursor up to the end of the current or next word. */
2454 void LyXText::deleteWordForward(BufferView * bview)
2455 {
2456         if (!cursor.par()->size())
2457                 cursorRight(bview);
2458         else {
2459                 LyXCursor tmpcursor = cursor;
2460                 tmpcursor.row(0); // ??
2461                 selection.set(true); // to avoid deletion
2462                 cursorRightOneWord(bview);
2463                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2464                 selection.cursor = cursor;
2465                 cursor = tmpcursor;
2466                 setSelection(bview);
2467
2468                 /* -----> Great, CutSelection() gets rid of multiple spaces. */
2469                 cutSelection(bview, true, false);
2470         }
2471 }
2472
2473
2474 /* -------> Delete from cursor to start of current or prior word. */
2475 void LyXText::deleteWordBackward(BufferView * bview)
2476 {
2477        if (!cursor.par()->size())
2478                cursorLeft(bview);
2479        else {
2480                LyXCursor tmpcursor = cursor;
2481                tmpcursor.row(0); // ??
2482                selection.set(true); // to avoid deletion
2483                cursorLeftOneWord(bview);
2484                setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2485                selection.cursor = cursor;
2486                cursor = tmpcursor;
2487                setSelection(bview);
2488                cutSelection(bview, true, false);
2489        }
2490 }
2491
2492
2493 /* -------> Kill to end of line. */
2494 void LyXText::deleteLineForward(BufferView * bview)
2495 {
2496         if (!cursor.par()->size())
2497                 // Paragraph is empty, so we just go to the right
2498                 cursorRight(bview);
2499         else {
2500                 LyXCursor tmpcursor = cursor;
2501                 // We can't store the row over a regular setCursor
2502                 // so we set it to 0 and reset it afterwards.
2503                 tmpcursor.row(0); // ??
2504                 selection.set(true); // to avoid deletion
2505                 cursorEnd(bview);
2506                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2507                 selection.cursor = cursor;
2508                 cursor = tmpcursor;
2509                 setSelection(bview);
2510                 // What is this test for ??? (JMarc)
2511                 if (!selection.set()) {
2512                         deleteWordForward(bview);
2513                 } else {
2514                         cutSelection(bview, true, false);
2515                 }
2516         }
2517 }
2518
2519
2520 // Change the case of a word at cursor position.
2521 // This function directly manipulates Paragraph::text because there
2522 // is no Paragraph::SetChar currently. I did what I could to ensure
2523 // that it is correct. I guess part of it should be moved to
2524 // Paragraph, but it will have to change for 1.1 anyway. At least
2525 // it does not access outside of the allocated array as the older
2526 // version did. (JMarc)
2527 void LyXText::changeCase(BufferView * bview, LyXText::TextCase action)
2528 {
2529         LyXCursor from;
2530         LyXCursor to;
2531
2532         if (selection.set()) {
2533                 from = selection.start;
2534                 to = selection.end;
2535         } else {
2536                 getWord(from, to, PARTIAL_WORD);
2537                 setCursor(bview, to.par(), to.pos() + 1);
2538         }
2539
2540         changeRegionCase(bview, from, to, action);
2541 }
2542
2543
2544 void LyXText::changeRegionCase(BufferView * bview,
2545                                LyXCursor const & from,
2546                                LyXCursor const & to,
2547                                LyXText::TextCase action)
2548 {
2549         lyx::Assert(from <= to);
2550
2551         setUndo(bview, Undo::FINISH,
2552                 from.par(), to.par()->next());
2553
2554         pos_type pos = from.pos();
2555         Paragraph * par = from.par();
2556
2557         while (par && (pos != to.pos() || par != to.par())) {
2558                 unsigned char c = par->getChar(pos);
2559                 if (!IsInsetChar(c) && !IsHfillChar(c)) {
2560                         switch (action) {
2561                         case text_lowercase:
2562                                 c = lowercase(c);
2563                                 break;
2564                         case text_capitalization:
2565                                 c = uppercase(c);
2566                                 action = text_lowercase;
2567                                 break;
2568                         case text_uppercase:
2569                                 c = uppercase(c);
2570                                 break;
2571                         }
2572                 }
2573                 par->setChar(pos, c);
2574                 checkParagraph(bview, par, pos);
2575
2576                 ++pos;
2577                 if (pos == par->size()) {
2578                         par = par->next();
2579                         pos = 0;
2580                 }
2581         }
2582         if (to.row() != from.row()) {
2583                 refresh_y = from.y() - from.row()->baseline();
2584                 refresh_row = from.row();
2585                 status(bview, LyXText::NEED_MORE_REFRESH);
2586         }
2587 }
2588
2589
2590 void LyXText::transposeChars(BufferView & bview)
2591 {
2592         Paragraph * tmppar = cursor.par();
2593
2594         setUndo(&bview, Undo::FINISH,
2595                 tmppar, tmppar->next());
2596
2597         pos_type tmppos = cursor.pos();
2598
2599         // First decide if it is possible to transpose at all
2600
2601         // We are at the beginning of a paragraph.
2602         if (tmppos == 0) return;
2603
2604         // We are at the end of a paragraph.
2605         if (tmppos == tmppar->size() - 1) return;
2606
2607         unsigned char c1 = tmppar->getChar(tmppos);
2608         unsigned char c2 = tmppar->getChar(tmppos - 1);
2609
2610         if (c1 != Paragraph::META_INSET
2611             && c2 != Paragraph::META_INSET) {
2612                 tmppar->setChar(tmppos, c2);
2613                 tmppar->setChar(tmppos - 1, c1);
2614         }
2615         // We should have an implementation that handles insets
2616         // as well, but that will have to come later. (Lgb)
2617         checkParagraph(const_cast<BufferView*>(&bview), tmppar, tmppos);
2618 }
2619
2620
2621 void LyXText::Delete(BufferView * bview)
2622 {
2623         // this is a very easy implementation
2624
2625         LyXCursor old_cursor = cursor;
2626         int const old_cur_par_id = old_cursor.par()->id();
2627         int const old_cur_par_prev_id = old_cursor.par()->previous() ?
2628                 old_cursor.par()->previous()->id() : 0;
2629
2630         // just move to the right
2631         cursorRight(bview);
2632
2633         // CHECK Look at the comment here.
2634         // This check is not very good...
2635         // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
2636         // and that can very well delete the par or par->previous in
2637         // old_cursor. Will a solution where we compare paragraph id's
2638         //work better?
2639         if ((cursor.par()->previous() ? cursor.par()->previous()->id() : 0)
2640             == old_cur_par_prev_id
2641             && cursor.par()->id() != old_cur_par_id) {
2642                 // delete-empty-paragraph-mechanism has done it
2643                 return;
2644         }
2645
2646         // if you had success make a backspace
2647         if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
2648                 LyXCursor tmpcursor = cursor;
2649                 // to make sure undo gets the right cursor position
2650                 cursor = old_cursor;
2651                 setUndo(bview, Undo::DELETE,
2652                         cursor.par(), cursor.par()->next());
2653                 cursor = tmpcursor;
2654                 backspace(bview);
2655         }
2656 }
2657
2658
2659 void LyXText::backspace(BufferView * bview)
2660 {
2661         // Get the font that is used to calculate the baselineskip
2662         pos_type lastpos = cursor.par()->size();
2663         LyXFont rawparfont =
2664                 cursor.par()->getFontSettings(bview->buffer()->params,
2665                                               lastpos - 1);
2666
2667         if (cursor.pos() == 0) {
2668                 // The cursor is at the beginning of a paragraph,
2669                 // so the the backspace will collapse two paragraphs into one.
2670
2671                 // we may paste some paragraphs
2672
2673                 // is it an empty paragraph?
2674
2675                 if ((lastpos == 0
2676                      || (lastpos == 1 && cursor.par()->isSeparator(0)))) {
2677                         // This is an empty paragraph and we delete it just by moving the cursor one step
2678                         // left and let the DeleteEmptyParagraphMechanism handle the actual deletion
2679                         // of the paragraph.
2680
2681                         if (cursor.par()->previous()) {
2682                                 Paragraph * tmppar = cursor.par()->previous();
2683                                 if (cursor.par()->getLayout() == tmppar->getLayout()
2684                                     && cursor.par()->getAlign() == tmppar->getAlign()) {
2685                                         // Inherit bottom DTD from the paragraph below.
2686                                         // (the one we are deleting)
2687                                         tmppar->params().lineBottom(cursor.par()->params().lineBottom());
2688                                         tmppar->params().spaceBottom(cursor.par()->params().spaceBottom());
2689                                         tmppar->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
2690                                 }
2691
2692                                 cursorLeft(bview);
2693
2694                                 // the layout things can change the height of a row !
2695                                 int const tmpheight = cursor.row()->height();
2696                                 setHeightOfRow(bview, cursor.row());
2697                                 if (cursor.row()->height() != tmpheight) {
2698                                         refresh_y = cursor.y() - cursor.row()->baseline();
2699                                         refresh_row = cursor.row();
2700                                         status(bview, LyXText::NEED_MORE_REFRESH);
2701                                 }
2702                                 return;
2703                         }
2704                 }
2705
2706                 if (cursor.par()->previous()) {
2707                         setUndo(bview, Undo::DELETE,
2708                                 cursor.par()->previous(), cursor.par()->next());
2709                 }
2710
2711                 Paragraph * tmppar = cursor.par();
2712                 Row * tmprow = cursor.row();
2713
2714                 // We used to do cursorLeftIntern() here, but it is
2715                 // not a good idea since it triggers the auto-delete
2716                 // mechanism. So we do a cursorLeftIntern()-lite,
2717                 // without the dreaded mechanism. (JMarc)
2718                 if (cursor.par()->previous()) {
2719                         // steps into the above paragraph.
2720                         setCursorIntern(bview, cursor.par()->previous(),
2721                                         cursor.par()->previous()->size(),
2722                                         false);
2723                 }
2724
2725                 /* Pasting is not allowed, if the paragraphs have different
2726                    layout. I think it is a real bug of all other
2727                    word processors to allow it. It confuses the user.
2728                    Even so with a footnote paragraph and a non-footnote
2729                    paragraph. I will not allow pasting in this case,
2730                    because the user would be confused if the footnote behaves
2731                    different wether it is open or closed.
2732
2733                    Correction: Pasting is always allowed with standard-layout
2734                 */
2735                 if (cursor.par() != tmppar
2736                     && (cursor.par()->getLayout() == tmppar->getLayout()
2737                         || tmppar->getLayout() == 0 /*standard*/)
2738                     && cursor.par()->getAlign() == tmppar->getAlign())
2739                 {
2740                         removeParagraph(tmprow);
2741                         removeRow(tmprow);
2742                         cursor.par()->pasteParagraph(bview->buffer()->params);
2743
2744                         if (!cursor.pos() || !cursor.par()->isSeparator(cursor.pos() - 1))
2745                                 ; //cursor.par()->insertChar(cursor.pos(), ' ');
2746                         // strangely enough it seems that commenting out the line above removes
2747                         // most or all of the segfaults. I will however also try to move the
2748                         // two Remove... lines in front of the PasteParagraph too.
2749                         else
2750                                 if (cursor.pos())
2751                                         cursor.pos(cursor.pos() - 1);
2752
2753                         status(bview, LyXText::NEED_MORE_REFRESH);
2754                         refresh_row = cursor.row();
2755                         refresh_y = cursor.y() - cursor.row()->baseline();
2756
2757                         // remove the lost paragraph
2758                         // This one is not safe, since the paragraph that the tmprow and the
2759                         // following rows belong to has been deleted by the PasteParagraph
2760                         // above. The question is... could this be moved in front of the
2761                         // PasteParagraph?
2762                         //RemoveParagraph(tmprow);
2763                         //RemoveRow(tmprow);
2764
2765                         // This rebuilds the rows.
2766                         appendParagraph(bview, cursor.row());
2767                         updateCounters(bview, cursor.row());
2768
2769                         // the row may have changed, block, hfills etc.
2770                         setCursor(bview, cursor.par(), cursor.pos(), false);
2771                 }
2772         } else {
2773                 /* this is the code for a normal backspace, not pasting
2774                  * any paragraphs */
2775                 setUndo(bview, Undo::DELETE,
2776                         cursor.par(), cursor.par()->next());
2777                 // We used to do cursorLeftIntern() here, but it is
2778                 // not a good idea since it triggers the auto-delete
2779                 // mechanism. So we do a cursorLeftIntern()-lite,
2780                 // without the dreaded mechanism. (JMarc)
2781                 setCursorIntern(bview, cursor.par(), cursor.pos()- 1,
2782                                 false, cursor.boundary());
2783
2784                 // some insets are undeletable here
2785                 if (cursor.par()->isInset(cursor.pos())) {
2786                         if (!cursor.par()->getInset(cursor.pos())->deletable())
2787                                 return;
2788                         // force complete redo when erasing display insets
2789                         // this is a cruel method but safe..... Matthias
2790                         if (cursor.par()->getInset(cursor.pos())->display() ||
2791                             cursor.par()->getInset(cursor.pos())->needFullRow()) {
2792                                 cursor.par()->erase(cursor.pos());
2793                                 redoParagraph(bview);
2794                                 return;
2795                         }
2796                 }
2797
2798                 Row * row = cursor.row();
2799                 int y = cursor.y() - row->baseline();
2800                 pos_type z;
2801                 /* remember that a space at the end of a row doesnt count
2802                  * when calculating the fill */
2803                 if (cursor.pos() < rowLast(row) ||
2804                     !cursor.par()->isLineSeparator(cursor.pos())) {
2805                         row->fill(row->fill() + singleWidth(bview,
2806                                                             cursor.par(),
2807                                                             cursor.pos()));
2808                 }
2809
2810                 /* some special code when deleting a newline. This is similar
2811                  * to the behavior when pasting paragraphs */
2812                 if (cursor.pos() && cursor.par()->isNewline(cursor.pos())) {
2813                         cursor.par()->erase(cursor.pos());
2814                         // refresh the positions
2815                         Row * tmprow = row;
2816                         while (tmprow->next() && tmprow->next()->par() == row->par()) {
2817                                 tmprow = tmprow->next();
2818                                 tmprow->pos(tmprow->pos() - 1);
2819                         }
2820                         if (cursor.par()->isLineSeparator(cursor.pos() - 1))
2821                                 cursor.pos(cursor.pos() - 1);
2822
2823                         if (cursor.pos() < cursor.par()->size()
2824                             && !cursor.par()->isSeparator(cursor.pos())) {
2825                                 cursor.par()->insertChar(cursor.pos(), ' ');
2826                                 setCharFont(bview->buffer(), cursor.par(),
2827                                             cursor.pos(), current_font);
2828                                 // refresh the positions
2829                                 tmprow = row;
2830                                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
2831                                         tmprow = tmprow->next();
2832                                         tmprow->pos(tmprow->pos() + 1);
2833                                 }
2834                         }
2835                 } else {
2836                         cursor.par()->erase(cursor.pos());
2837
2838                         // refresh the positions
2839                         Row * tmprow = row;
2840                         while (tmprow->next()
2841                                && tmprow->next()->par() == row->par()) {
2842                                 tmprow = tmprow->next();
2843                                 tmprow->pos(tmprow->pos() - 1);
2844                         }
2845
2846                         // delete newlines at the beginning of paragraphs
2847                         while (cursor.par()->size() &&
2848                                cursor.par()->isNewline(cursor.pos()) &&
2849                                cursor.pos() == beginningOfMainBody(bview->buffer(),
2850                                                                    cursor.par())) {
2851                                 cursor.par()->erase(cursor.pos());
2852                                 // refresh the positions
2853                                 tmprow = row;
2854                                 while (tmprow->next() &&
2855                                        tmprow->next()->par() == row->par()) {
2856                                         tmprow = tmprow->next();
2857                                         tmprow->pos(tmprow->pos() - 1);
2858                                 }
2859                         }
2860                 }
2861
2862                 // is there a break one row above
2863                 if (row->previous() && row->previous()->par() == row->par()) {
2864                         z = nextBreakPoint(bview, row->previous(),
2865                                            workWidth(bview));
2866                         if (z >= row->pos()) {
2867                                 row->pos(z + 1);
2868
2869                                 Row * tmprow = row->previous();
2870
2871                                 // maybe the current row is now empty
2872                                 if (row->pos() >= row->par()->size()) {
2873                                         // remove it
2874                                         removeRow(row);
2875                                         need_break_row = 0;
2876                                 } else {
2877                                         breakAgainOneRow(bview, row);
2878                                         if (row->next() && row->next()->par() == row->par())
2879                                                 need_break_row = row->next();
2880                                         else
2881                                                 need_break_row = 0;
2882                                 }
2883
2884                                 // set the dimensions of the row above
2885                                 y -= tmprow->height();
2886                                 tmprow->fill(fill(bview, tmprow,
2887                                                   workWidth(bview)));
2888                                 setHeightOfRow(bview, tmprow);
2889
2890                                 refresh_y = y;
2891                                 refresh_row = tmprow;
2892                                 status(bview, LyXText::NEED_MORE_REFRESH);
2893                                 setCursor(bview, cursor.par(), cursor.pos(),
2894                                           false, cursor.boundary());
2895                                 //current_font = rawtmpfont;
2896                                 //real_current_font = realtmpfont;
2897                                 // check, whether the last character's font has changed.
2898                                 if (rawparfont !=
2899                                     cursor.par()->getFontSettings(bview->buffer()->params,
2900                                                                   cursor.par()->size() - 1))
2901                                         redoHeightOfParagraph(bview, cursor);
2902                                 return;
2903                         }
2904                 }
2905
2906                 // break the cursor row again
2907                 if (row->next() && row->next()->par() == row->par() &&
2908                     (rowLast(row) == row->par()->size() - 1 ||
2909                      nextBreakPoint(bview, row, workWidth(bview)) != rowLast(row))) {
2910
2911                         /* it can happen that a paragraph loses one row
2912                          * without a real breakup. This is when a word
2913                          * is to long to be broken. Well, I don t care this
2914                          * hack ;-) */
2915                         if (rowLast(row) == row->par()->size() - 1)
2916                                 removeRow(row->next());
2917
2918                         refresh_y = y;
2919                         refresh_row = row;
2920                         status(bview, LyXText::NEED_MORE_REFRESH);
2921
2922                         breakAgainOneRow(bview, row);
2923                         // will the cursor be in another row now?
2924                         if (row->next() && row->next()->par() == row->par() &&
2925                             rowLast(row) <= cursor.pos()) {
2926                                 row = row->next();
2927                                 breakAgainOneRow(bview, row);
2928                         }
2929
2930                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2931
2932                         if (row->next() && row->next()->par() == row->par())
2933                                 need_break_row = row->next();
2934                         else
2935                                 need_break_row = 0;
2936                 } else  {
2937                         // set the dimensions of the row
2938                         row->fill(fill(bview, row, workWidth(bview)));
2939                         int const tmpheight = row->height();
2940                         setHeightOfRow(bview, row);
2941                         if (tmpheight == row->height())
2942                                 status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
2943                         else
2944                                 status(bview, LyXText::NEED_MORE_REFRESH);
2945                         refresh_y = y;
2946                         refresh_row = row;
2947                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2948                 }
2949         }
2950
2951         // current_font = rawtmpfont;
2952         // real_current_font = realtmpfont;
2953
2954         if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
2955             != cursor.boundary())
2956                 setCursor(bview, cursor.par(), cursor.pos(), false,
2957                           !cursor.boundary());
2958
2959         lastpos = cursor.par()->size();
2960         if (cursor.pos() == lastpos)
2961                 setCurrentFont(bview);
2962
2963         // check, whether the last characters font has changed.
2964         if (rawparfont !=
2965             cursor.par()->getFontSettings(bview->buffer()->params, lastpos - 1)) {
2966                 redoHeightOfParagraph(bview, cursor);
2967         } else {
2968                 // now the special right address boxes
2969                 if (textclasslist.Style(bview->buffer()->params.textclass,
2970                                         cursor.par()->getLayout()).margintype == MARGIN_RIGHT_ADDRESS_BOX) {
2971                         redoDrawingOfParagraph(bview, cursor);
2972                 }
2973         }
2974 }
2975
2976
2977 bool LyXText::paintRowBackground(DrawRowParams & p)
2978 {
2979         bool clear_area = true;
2980         Inset * inset = 0;
2981         LyXFont font(LyXFont::ALL_SANE);
2982
2983         pos_type const last = rowLastPrintable(p.row);
2984
2985         if (!p.bv->screen()->forceClear() && last == p.row->pos()
2986                 && p.row->par()->isInset(p.row->pos())) {
2987                 inset = p.row->par()->getInset(p.row->pos());
2988                 if (inset) {
2989                         clear_area = inset->doClearArea();
2990                 }
2991         }
2992
2993         if (p.cleared) {
2994                 return true;
2995         }
2996
2997         if (clear_area) {
2998                 int const x = p.xo;
2999                 int const y = p.yo < 0 ? 0 : p.yo;
3000                 int const h = p.yo < 0 ? p.row->height() + p.yo : p.row->height();
3001                 p.pain->fillRectangle(x, y, p.width, h, backgroundColor());
3002                 return true;
3003         }
3004
3005         if (inset == 0)
3006                 return false;
3007
3008         int h = p.row->baseline() - inset->ascent(p.bv, font);
3009
3010         // first clear the whole row above the inset!
3011         if (h > 0) {
3012                 p.pain->fillRectangle(p.xo, p.yo, p.width, h, backgroundColor());
3013         }
3014
3015         // clear the space below the inset!
3016         h += inset->ascent(p.bv, font) + inset->descent(p.bv, font);
3017         if ((p.row->height() - h) > 0) {
3018                 p.pain->fillRectangle(p.xo, p.yo + h,
3019                         p.width, p.row->height() - h, backgroundColor());
3020         }
3021
3022         // clear the space behind the inset, if needed
3023         if (!inset->display() && !inset->needFullRow()) {
3024                 int const xp = int(p.x) + inset->width(p.bv, font);
3025                 if (p.width - xp > 0) {
3026                         p.pain->fillRectangle(xp, p.yo, p.width - xp,
3027                                 p.row->height(), backgroundColor());
3028                 }
3029         }
3030
3031         return false;
3032 }
3033
3034
3035 void LyXText::paintRowSelection(DrawRowParams & p)
3036 {
3037         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3038
3039         // the current selection
3040         int const startx = selection.start.x();
3041         int const endx = selection.end.x();
3042         int const starty = selection.start.y();
3043         int const endy = selection.end.y();
3044         Row const * startrow = selection.start.row();
3045         Row const * endrow = selection.end.row();
3046
3047         Row * row = p.row;
3048
3049         if (bidi_same_direction) {
3050                 int x;
3051                 int y = p.yo;
3052                 int w;
3053                 int h = row->height();
3054
3055                 if (startrow == row && endrow == row) {
3056                         if (startx < endx) {
3057                                 x = p.xo + startx;
3058                                 w = endx - startx;
3059                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3060                         } else {
3061                                 x = p.xo + endx;
3062                                 w = startx - endx;
3063                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3064                         }
3065                 } else if (startrow == row) {
3066                         int const x = (is_rtl) ? p.xo : (p.xo + startx);
3067                         int const w = (is_rtl) ? startx : (p.width - startx);
3068                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3069                 } else if (endrow == row) {
3070                         int const x = (is_rtl) ? (p.xo + endx) : p.xo;
3071                         int const w = (is_rtl) ? (p.width - endx) : endx;
3072                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3073                 } else if (p.y > starty && p.y < endy) {
3074                         p.pain->fillRectangle(p.xo, y, p.width, h, LColor::selection);
3075                 }
3076                 return;
3077         } else if (startrow != row && endrow != row) {
3078                 int w = p.width;
3079                 int h = row->height();
3080                 if (p.y > starty && p.y < endy) {
3081                         p.pain->fillRectangle(p.xo, p.yo, w, h, LColor::selection);
3082                 }
3083                 return;
3084         }
3085
3086         if (!((startrow != row && !is_rtl) || (endrow != row && is_rtl))) {
3087                 return;
3088         }
3089
3090         float tmpx = p.x;
3091
3092         p.pain->fillRectangle(p.xo, p.yo, int(p.x), row->height(), LColor::selection);
3093
3094         Buffer const * buffer = p.bv->buffer();
3095         Paragraph * par = row->par();
3096         pos_type main_body = beginningOfMainBody(buffer, par);
3097         pos_type const last = rowLastPrintable(row);
3098
3099         for (pos_type vpos = row->pos(); vpos <= last; ++vpos)  {
3100                 pos_type pos = vis2log(vpos);
3101                 float const old_tmpx = tmpx;
3102                 if (main_body > 0 && pos == main_body - 1) {
3103                         LyXLayout const & layout = textclasslist.Style(buffer->params.textclass,
3104                                 par->getLayout());
3105                         LyXFont const lfont = getLabelFont(buffer, par);
3106
3107
3108                         tmpx += p.label_hfill + lyxfont::width(layout.labelsep, lfont);
3109
3110                         if (par->isLineSeparator(main_body - 1))
3111                                 tmpx -= singleWidth(p.bv, par, main_body - 1);
3112                 }
3113
3114                 if (hfillExpansion(buffer, row, pos)) {
3115                         tmpx += singleWidth(p.bv, par, pos);
3116                         if (pos >= main_body)
3117                                 tmpx += p.hfill;
3118                         else
3119                                 tmpx += p.label_hfill;
3120                 }
3121
3122                 else if (par->isSeparator(pos)) {
3123                         tmpx += singleWidth(p.bv, par, pos);
3124                         if (pos >= main_body)
3125                                 tmpx += p.separator;
3126                 } else {
3127                         tmpx += singleWidth(p.bv, par, pos);
3128                 }
3129
3130                 if ((startrow != row || selection.start.pos() <= pos) &&
3131                         (endrow != row || pos < selection.end.pos())) {
3132                         // Here we do not use p.x as p.xo was added to p.x.
3133                         p.pain->fillRectangle(int(old_tmpx), p.yo,
3134                                 int(tmpx - old_tmpx + 1),
3135                                 row->height(), LColor::selection);
3136                 }
3137
3138                 if ((startrow != row && is_rtl) || (endrow != row && !is_rtl)) {
3139                         p.pain->fillRectangle(p.xo + int(tmpx),
3140                                 p.yo, int(p.bv->workWidth() - tmpx),
3141                                 row->height(), LColor::selection);
3142                 }
3143         }
3144 }
3145
3146
3147 void LyXText::paintRowAppendix(DrawRowParams & p)
3148 {
3149         // FIXME: can be just p.width ?
3150         int const ww = p.bv->workWidth();
3151         Paragraph * firstpar = p.row->par();
3152
3153         if (firstpar->params().appendix()) {
3154                 p.pain->line(1, p.yo, 1, p.yo + p.row->height(), LColor::appendixline);
3155                 p.pain->line(ww - 2, p.yo, ww - 2, p.yo + p.row->height(), LColor::appendixline);
3156         }
3157 }
3158
3159
3160 void LyXText::paintRowDepthBar(DrawRowParams & p)
3161 {
3162         Paragraph::depth_type const depth = p.row->par()->getDepth();
3163
3164         if (depth <= 0)
3165                 return;
3166
3167         Paragraph::depth_type prev_depth = 0;
3168         if (p.row->previous())
3169                 prev_depth = p.row->previous()->par()->getDepth();
3170         Paragraph::depth_type next_depth = 0;
3171         if (p.row->next())
3172                 next_depth = p.row->next()->par()->getDepth();
3173
3174         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
3175                 int const x = (LYX_PAPER_MARGIN / 5) * i + p.xo;
3176                 int const h = p.yo + p.row->height() - 1 - (i - next_depth - 1) * 3;
3177
3178                 p.pain->line(x, p.yo, x, h, LColor::depthbar);
3179
3180                 int const w = LYX_PAPER_MARGIN / 5;
3181
3182                 if (i > prev_depth) {
3183                         p.pain->fillRectangle(x, p.yo, w, 2, LColor::depthbar);
3184                 }
3185                 if (i > next_depth) {
3186                         p.pain->fillRectangle(x, h, w, 2, LColor::depthbar);
3187                 }
3188         }
3189 }
3190
3191
3192 int LyXText::getLengthMarkerHeight(BufferView * bv, VSpace const & vsp) const
3193 {
3194         int const arrow_size = 4;
3195         int const space_size = int(vsp.inPixels(bv));
3196
3197         if (vsp.kind() != VSpace::LENGTH) {
3198                 return space_size;
3199         }
3200
3201         LyXFont font;
3202         font.decSize();
3203         int const min_size = std::max(3 * arrow_size,
3204                                       lyxfont::maxAscent(font)
3205                                       + lyxfont::maxDescent(font));
3206
3207         if (vsp.length().len().value() < 0.0)
3208                 return min_size;
3209         else
3210                 return std::max(min_size, space_size);
3211 }
3212
3213
3214 int LyXText::drawLengthMarker(DrawRowParams & p, string const & prefix,
3215                               VSpace const & vsp, int start)
3216 {
3217         int const arrow_size = 4;
3218         int const size = getLengthMarkerHeight(p.bv, vsp);
3219         int const end = start + size;
3220
3221         // the label to display (if any)
3222         string str;
3223         // y-values for top arrow
3224         int ty1, ty2;
3225         // y-values for bottom arrow
3226         int by1, by2;
3227         switch (vsp.kind()) {
3228         case VSpace::LENGTH:
3229         {
3230                 str = prefix + " (" + vsp.asLyXCommand() + ")";
3231                 // adding or removing space
3232                 bool const added = !(vsp.length().len().value() < 0.0);
3233                 ty1 = added ? (start + arrow_size) : start;
3234                 ty2 = added ? start : (start + arrow_size);
3235                 by1 = added ? (end - arrow_size) : end;
3236                 by2 = added ? end : (end - arrow_size);
3237                 break;
3238         }
3239         case VSpace:: VFILL:
3240                 str = prefix + " (vertical fill)";
3241                 ty1 = ty2 = start;
3242                 by1 = by2 = end;
3243                 break;
3244         default:
3245                 // nothing to draw here
3246                 return size;
3247         }
3248
3249         int const leftx = p.xo + leftMargin(p.bv, p.row);
3250         int const midx = leftx + arrow_size;
3251         int const rightx = midx + arrow_size;
3252
3253         // first the string
3254         int w = 0;
3255         int a = 0;
3256         int d = 0;
3257
3258         LyXFont font;
3259         font.setColor(LColor::added_space).decSize();
3260         lyxfont::rectText(str, font, w, a, d);
3261
3262         p.pain->rectText(leftx + 2 * arrow_size + 5,
3263                          start + ((end - start) / 2) + d,
3264                          str, font,
3265                          backgroundColor(),
3266                          backgroundColor());
3267
3268         // top arrow
3269         p.pain->line(leftx, ty1, midx, ty2, LColor::added_space);
3270         p.pain->line(midx, ty2, rightx, ty1, LColor::added_space);
3271
3272         // bottom arrow
3273         p.pain->line(leftx, by1, midx, by2, LColor::added_space);
3274         p.pain->line(midx, by2, rightx, by1, LColor::added_space);
3275
3276         // joining line
3277         p.pain->line(midx, ty2, midx, by2, LColor::added_space);
3278
3279         return size;
3280 }
3281
3282
3283 void LyXText::paintFirstRow(DrawRowParams & p)
3284 {
3285         Paragraph * par = p.row->par();
3286         ParagraphParameters const & parparams = par->params();
3287
3288         // start of appendix?
3289         if (parparams.startOfAppendix()) {
3290                 p.pain->line(1, p.yo, p.width - 2, p.yo, LColor::appendixline);
3291         }
3292
3293         int y_top = 0;
3294
3295         // think about the margins
3296         if (!p.row->previous() && bv_owner)
3297                 y_top += LYX_PAPER_MARGIN;
3298
3299         // draw a top pagebreak
3300         if (parparams.pagebreakTop()) {
3301                 int const y = p.yo + y_top + 2*defaultHeight();
3302                 p.pain->line(p.xo, y, p.xo + p.width, y,
3303                         LColor::pagebreak, Painter::line_onoffdash);
3304
3305                 int w = 0;
3306                 int a = 0;
3307                 int d = 0;
3308
3309                 LyXFont pb_font;
3310                 pb_font.setColor(LColor::pagebreak).decSize();
3311                 lyxfont::rectText(_("Page Break (top)"), pb_font, w, a, d);
3312                 p.pain->rectText((p.width - w)/2, y + d,
3313                               _("Page Break (top)"), pb_font,
3314                               backgroundColor(),
3315                               backgroundColor());
3316                 y_top += 3 * defaultHeight();
3317         }
3318
3319         // draw the additional space if needed:
3320         y_top += drawLengthMarker(p, _("Space above"),
3321                                   parparams.spaceTop(), p.yo + y_top);
3322
3323         Buffer const * buffer = p.bv->buffer();
3324
3325         LyXLayout const & layout =
3326                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3327
3328         // think about the parskip
3329         // some parskips VERY EASY IMPLEMENTATION
3330         if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
3331                 if (par->previous()) {
3332                         if (layout.latextype == LATEX_PARAGRAPH
3333                                 && !par->getDepth()) {
3334                                 y_top += buffer->params.getDefSkip().inPixels(p.bv);
3335                         } else {
3336                                 LyXLayout const & playout =
3337                                         textclasslist.Style(buffer->params.textclass,
3338                                                 par->previous()->getLayout());
3339                                 if (playout.latextype == LATEX_PARAGRAPH
3340                                         && !par->previous()->getDepth()) {
3341                                         // is it right to use defskip here, too? (AS)
3342                                         y_top += buffer->params.getDefSkip().inPixels(p.bv);
3343                                 }
3344                         }
3345                 }
3346         }
3347
3348         int const ww = p.bv->workWidth();
3349
3350         // draw a top line
3351         if (parparams.lineTop()) {
3352                 LyXFont font(LyXFont::ALL_SANE);
3353                 int const asc = lyxfont::ascent('x', getFont(buffer, par, 0));
3354
3355                 y_top += asc;
3356
3357                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3358                 int const xp = static_cast<int>(inset_owner ? p.xo : 0);
3359                 p.pain->line(xp, p.yo + y_top, xp + w, p.yo + y_top,
3360                         LColor::topline, Painter::line_solid,
3361                         Painter::line_thick);
3362
3363                 y_top += asc;
3364         }
3365
3366         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3367
3368         // should we print a label?
3369         if (layout.labeltype >= LABEL_STATIC
3370             && (layout.labeltype != LABEL_STATIC
3371                 || layout.latextype != LATEX_ENVIRONMENT
3372                 || par->isFirstInSequence())) {
3373
3374                 LyXFont font = getLabelFont(buffer, par);
3375                 if (!par->getLabelstring().empty()) {
3376                         float x = p.x;
3377                         string const str = par->getLabelstring();
3378
3379                         // this is special code for the chapter layout. This is
3380                         // printed in an extra row and has a pagebreak at
3381                         // the top.
3382                         if (layout.labeltype == LABEL_COUNTER_CHAPTER) {
3383                                 if (buffer->params.secnumdepth >= 0) {
3384                                         float spacing_val = 1.0;
3385                                         if (!parparams.spacing().isDefault()) {
3386                                                 spacing_val = parparams.spacing().getValue();
3387                                         } else {
3388                                                 spacing_val = buffer->params.spacing.getValue();
3389                                         }
3390
3391                                         int const maxdesc =
3392                                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val)
3393                                                 + int(layout.parsep) * defaultHeight();
3394
3395                                         if (is_rtl) {
3396                                                 x = ww - leftMargin(p.bv, p.row) -
3397                                                         lyxfont::width(str, font);
3398                                         }
3399
3400                                         p.pain->text(int(x),
3401                                                 p.yo + p.row->baseline() -
3402                                                 p.row->ascent_of_text() - maxdesc,
3403                                                 str, font);
3404                                 }
3405                         } else {
3406                                 if (is_rtl) {
3407                                         x = ww - leftMargin(p.bv, p.row)
3408                                                 + lyxfont::width(layout.labelsep, font);
3409                                 } else {
3410                                         x = p.x - lyxfont::width(layout.labelsep, font)
3411                                                 - lyxfont::width(str, font);
3412                                 }
3413
3414                                 p.pain->text(int(x), p.yo + p.row->baseline(), str, font);
3415                         }
3416                 }
3417         // the labels at the top of an environment.
3418         // More or less for bibliography
3419         } else if (par->isFirstInSequence() &&
3420                 (layout.labeltype == LABEL_TOP_ENVIRONMENT ||
3421                 layout.labeltype == LABEL_BIBLIO ||
3422                 layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
3423                 LyXFont font = getLabelFont(buffer, par);
3424                 if (!par->getLabelstring().empty()) {
3425                         string const str = par->getLabelstring();
3426                         float spacing_val = 1.0;
3427                         if (!parparams.spacing().isDefault()) {
3428                                 spacing_val = parparams.spacing().getValue();
3429                         } else {
3430                                 spacing_val = buffer->params.spacing.getValue();
3431                         }
3432
3433                         int maxdesc =
3434                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val
3435                                 + (layout.labelbottomsep * defaultHeight()));
3436
3437                         float x = p.x;
3438                         if (layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
3439                                 x = ((is_rtl ? leftMargin(p.bv, p.row) : p.x)
3440                                          + ww - rightMargin(buffer, p.row) ) / 2;
3441                                 x -= lyxfont::width(str, font) / 2;
3442                         } else if (is_rtl) {
3443                                 x = ww - leftMargin(p.bv, p.row) -
3444                                         lyxfont::width(str, font);
3445                         }
3446                         p.pain->text(int(x), p.yo + p.row->baseline()
3447                                   - p.row->ascent_of_text() - maxdesc,
3448                                   str, font);
3449                 }
3450         }
3451
3452         if (layout.labeltype == LABEL_BIBLIO && par->bibkey) {
3453                 LyXFont font = getLayoutFont(buffer, par);
3454                 float x;
3455                 if (is_rtl) {
3456                         x = ww - leftMargin(p.bv, p.row)
3457                                 + lyxfont::width(layout.labelsep, font);
3458                 } else {
3459                         x = p.x - lyxfont::width(layout.labelsep, font)
3460                                 - par->bibkey->width(p.bv, font);
3461                 }
3462                 par->bibkey->draw(p.bv, font, p.yo + p.row->baseline(), x, p.cleared);
3463         }
3464 }
3465
3466
3467 void LyXText::paintLastRow(DrawRowParams & p)
3468 {
3469         Paragraph * par = p.row->par();
3470         ParagraphParameters const & parparams = par->params();
3471         int y_bottom = p.row->height() - 1;
3472
3473         // think about the margins
3474         if (!p.row->next() && bv_owner)
3475                 y_bottom -= LYX_PAPER_MARGIN;
3476
3477         int const ww = p.bv->workWidth();
3478
3479         // draw a bottom pagebreak
3480         if (parparams.pagebreakBottom()) {
3481                 LyXFont pb_font;
3482                 pb_font.setColor(LColor::pagebreak).decSize();
3483                 int const y = p.yo + y_bottom - 2 * defaultHeight();
3484
3485                 p.pain->line(p.xo, y, p.xo + p.width, y, LColor::pagebreak,
3486                              Painter::line_onoffdash);
3487
3488                 int w = 0;
3489                 int a = 0;
3490                 int d = 0;
3491                 lyxfont::rectText(_("Page Break (bottom)"), pb_font, w, a, d);
3492                 p.pain->rectText((ww - w) / 2, y + d,
3493                         _("Page Break (bottom)"),
3494                         pb_font, backgroundColor(), backgroundColor());
3495
3496                 y_bottom -= 3 * defaultHeight();
3497         }
3498
3499         // draw the additional space if needed:
3500         int const height =  getLengthMarkerHeight(p.bv,
3501                                                   parparams.spaceBottom());
3502         y_bottom -= drawLengthMarker(p, _("Space below"),
3503                                      parparams.spaceBottom(),
3504                                      p.yo + y_bottom - height);
3505
3506         Buffer const * buffer = p.bv->buffer();
3507
3508         // draw a bottom line
3509         if (parparams.lineBottom()) {
3510                 LyXFont font(LyXFont::ALL_SANE);
3511                 int const asc = lyxfont::ascent('x',
3512                         getFont(buffer, par,
3513                         max(pos_type(0), par->size() - 1)));
3514
3515                 y_bottom -= asc;
3516
3517                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3518                 int const xp = static_cast<int>(inset_owner ? p.xo : 0);
3519                 int const y = p.yo + y_bottom;
3520                 p.pain->line(xp, y, xp + w, y, LColor::topline, Painter::line_solid,
3521                           Painter::line_thick);
3522
3523                 y_bottom -= asc;
3524         }
3525
3526         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3527         int const endlabel = par->getEndLabel(buffer->params);
3528
3529         // draw an endlabel
3530         switch (endlabel) {
3531         case END_LABEL_BOX:
3532         case END_LABEL_FILLED_BOX:
3533         {
3534                 LyXFont const font = getLabelFont(buffer, par);
3535                 int const size = int(0.75 * lyxfont::maxAscent(font));
3536                 int const y = (p.yo + p.row->baseline()) - size;
3537                 int x = is_rtl ? LYX_PAPER_MARGIN : ww - LYX_PAPER_MARGIN - size;
3538
3539                 if (p.row->fill() <= size)
3540                         x += (size - p.row->fill() + 1) * (is_rtl ? -1 : 1);
3541
3542                 if (endlabel == END_LABEL_BOX) {
3543                         p.pain->rectangle(x, y, size, size, LColor::eolmarker);
3544                 } else {
3545                         p.pain->fillRectangle(x, y, size, size,
3546                                               LColor::eolmarker);
3547                 }
3548                 break;
3549         }
3550         case END_LABEL_STATIC:
3551         {
3552                 LyXFont font(LyXFont::ALL_SANE);
3553                 LyXTextClass::LayoutList::size_type layout = par->getLayout();
3554                 string const str = textclasslist.
3555                         Style(buffer->params.textclass, layout).endlabelstring();
3556                 font = getLabelFont(buffer, par);
3557                 int const x = is_rtl ?
3558                         int(p.x) - lyxfont::width(str, font)
3559                         : ww - rightMargin(buffer, p.row) - p.row->fill();
3560                 p.pain->text(x, p.yo + p.row->baseline(), str, font);
3561                 break;
3562         }
3563         case END_LABEL_NO_LABEL:
3564                 break;
3565         }
3566 }
3567
3568 void LyXText::paintRowText(DrawRowParams & p)
3569 {
3570         Paragraph * par = p.row->par();
3571         Buffer const * buffer = p.bv->buffer();
3572
3573         pos_type const last = rowLastPrintable(p.row);
3574         pos_type main_body =
3575                 beginningOfMainBody(buffer, par);
3576         if (main_body > 0 &&
3577                 (main_body - 1 > last ||
3578                 !par->isLineSeparator(main_body - 1))) {
3579                 main_body = 0;
3580         }
3581
3582         LyXLayout const & layout =
3583                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3584
3585         pos_type vpos = p.row->pos();
3586         while (vpos <= last) {
3587                 pos_type pos = vis2log(vpos);
3588                 if (main_body > 0 && pos == main_body - 1) {
3589                         int const lwidth = lyxfont::width(layout.labelsep,
3590                                 getLabelFont(buffer, par));
3591
3592                         p.x += p.label_hfill + lwidth
3593                                 - singleWidth(p.bv, par, main_body - 1);
3594                 }
3595
3596                 if (par->isHfill(pos)) {
3597                         p.x += 1;
3598
3599                         int const y0 = p.yo + p.row->baseline();
3600                         int const y1 = y0 - defaultHeight() / 2;
3601
3602                         p.pain->line(int(p.x), y1, int(p.x), y0,
3603                                      LColor::added_space);
3604
3605                         if (hfillExpansion(buffer, p.row, pos)) {
3606                                 int const y2 = (y0 + y1) / 2;
3607
3608                                 if (pos >= main_body) {
3609                                         p.pain->line(int(p.x), y2,
3610                                                   int(p.x + p.hfill), y2,
3611                                                   LColor::added_space,
3612                                                   Painter::line_onoffdash);
3613                                         p.x += p.hfill;
3614                                 } else {
3615                                         p.pain->line(int(p.x), y2,
3616                                                   int(p.x + p.label_hfill), y2,
3617                                                   LColor::added_space,
3618                                                   Painter::line_onoffdash);
3619                                         p.x += p.label_hfill;
3620                                 }
3621                                 p.pain->line(int(p.x), y1,
3622                                              int(p.x), y0,
3623                                              LColor::added_space);
3624                         }
3625                         p.x += 2;
3626                         ++vpos;
3627                 } else if (par->isSeparator(pos)) {
3628                         p.x += singleWidth(p.bv, par, pos);
3629                         if (pos >= main_body)
3630                                 p.x += p.separator;
3631                         ++vpos;
3632                 } else {
3633                         draw(p, vpos);
3634                 }
3635         }
3636 }
3637
3638
3639 void LyXText::getVisibleRow(BufferView * bv, int y_offset, int x_offset,
3640                             Row * row, int y, bool cleared)
3641 {
3642         if (row->height() <= 0) {
3643                 lyxerr << "LYX_ERROR: row.height: "
3644                        << row->height() << endl;
3645                 return;
3646         }
3647
3648         DrawRowParams p;
3649
3650         // set up drawing parameters
3651         p.bv = bv;
3652         p.pain = &bv->painter();
3653         p.row = row;
3654         p.xo = x_offset;
3655         p.yo = y_offset;
3656         prepareToPrint(bv, row, p.x, p.separator, p.hfill, p.label_hfill);
3657         if (inset_owner && (p.x < 0))
3658                 p.x = 0;
3659         p.x += p.xo;
3660         p.y = y;
3661         p.width = inset_owner ? inset_owner->textWidth(bv, true) : bv->workWidth();
3662         p.cleared = cleared;
3663
3664         // start painting
3665
3666         // clear to background if necessary
3667         p.cleared = paintRowBackground(p);
3668
3669         // paint the selection background
3670         if (selection.set()) {
3671                 paintRowSelection(p);
3672         }
3673
3674         // vertical lines for appendix
3675         paintRowAppendix(p);
3676
3677         // environment depth brackets
3678         paintRowDepthBar(p);
3679
3680         // draw any stuff wanted for a first row of a paragraph
3681         if (!row->pos()) {
3682                 paintFirstRow(p);
3683         }
3684
3685         // draw any stuff wanted for the last row of a paragraph
3686         if (!row->next() || (row->next()->par() != row->par())) {
3687                 paintLastRow(p);
3688         }
3689
3690         // paint text
3691         paintRowText(p);
3692 }
3693
3694
3695 int LyXText::defaultHeight() const
3696 {
3697         LyXFont font(LyXFont::ALL_SANE);
3698         return int(lyxfont::maxAscent(font) + lyxfont::maxDescent(font) * 1.5);
3699 }
3700
3701
3702 /* returns the column near the specified x-coordinate of the row
3703 * x is set to the real beginning of this column  */
3704 pos_type
3705 LyXText::getColumnNearX(BufferView * bview, Row * row, int & x,
3706                         bool & boundary) const
3707 {
3708         float tmpx = 0.0;
3709         float fill_separator;
3710         float fill_hfill;
3711         float fill_label_hfill;
3712
3713         prepareToPrint(bview, row, tmpx, fill_separator,
3714                        fill_hfill, fill_label_hfill);
3715
3716         pos_type vc = row->pos();
3717         pos_type last = rowLastPrintable(row);
3718         pos_type c = 0;
3719         LyXLayout const & layout =
3720                 textclasslist.Style(bview->buffer()->params.textclass,
3721                                     row->par()->getLayout());
3722         bool left_side = false;
3723
3724         pos_type main_body = beginningOfMainBody(bview->buffer(), row->par());
3725         float last_tmpx = tmpx;
3726
3727         if (main_body > 0 &&
3728             (main_body - 1 > last ||
3729              !row->par()->isLineSeparator(main_body - 1)))
3730                 main_body = 0;
3731
3732         while (vc <= last && tmpx <= x) {
3733                 c = vis2log(vc);
3734                 last_tmpx = tmpx;
3735                 if (main_body > 0 && c == main_body-1) {
3736                         tmpx += fill_label_hfill +
3737                                 lyxfont::width(layout.labelsep,
3738                                                getLabelFont(bview->buffer(), row->par()));
3739                         if (row->par()->isLineSeparator(main_body - 1))
3740                                 tmpx -= singleWidth(bview, row->par(), main_body-1);
3741                 }
3742
3743                 if (hfillExpansion(bview->buffer(), row, c)) {
3744                         x += singleWidth(bview, row->par(), c);
3745                         if (c >= main_body)
3746                                 tmpx += fill_hfill;
3747                         else
3748                                 tmpx += fill_label_hfill;
3749                 }
3750                 else if (row->par()->isSeparator(c)) {
3751                         tmpx += singleWidth(bview, row->par(), c);
3752                         if (c >= main_body)
3753                                 tmpx+= fill_separator;
3754                 } else
3755                         tmpx += singleWidth(bview, row->par(), c);
3756                 ++vc;
3757         }
3758
3759         if ((tmpx + last_tmpx) / 2 > x) {
3760                 tmpx = last_tmpx;
3761                 left_side = true;
3762         }
3763
3764         if (vc > last + 1)  // This shouldn't happen.
3765                 vc = last + 1;
3766
3767         boundary = false;
3768         bool const lastrow = lyxrc.rtl_support // This is not needed, but gives
3769                                          // some speedup if rtl_support=false
3770                 && (!row->next() || row->next()->par() != row->par());
3771         bool const rtl = (lastrow)
3772                 ? row->par()->isRightToLeftPar(bview->buffer()->params)
3773                 : false; // If lastrow is false, we don't need to compute
3774                          // the value of rtl.
3775
3776         if (row->pos() > last)  // Row is empty?
3777                 c = row->pos();
3778         else if (lastrow &&
3779                  ( ( rtl &&  left_side && vc == row->pos() && x < tmpx - 5) ||
3780                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5) ))
3781                 c = last + 1;
3782         else if (vc == row->pos()) {
3783                 c = vis2log(vc);
3784                 if (bidi_level(c) % 2 == 1)
3785                         ++c;
3786         } else {
3787                 c = vis2log(vc - 1);
3788                 bool const rtl = (bidi_level(c) % 2 == 1);
3789                 if (left_side == rtl) {
3790                         ++c;
3791                         boundary = isBoundary(bview->buffer(), row->par(), c);
3792                 }
3793         }
3794
3795         if (row->pos() <= last && c > last
3796             && row->par()->isNewline(last)) {
3797                 if (bidi_level(last) % 2 == 0)
3798                         tmpx -= singleWidth(bview, row->par(), last);
3799                 else
3800                         tmpx += singleWidth(bview, row->par(), last);
3801                 c = last;
3802         }
3803
3804         c -= row->pos();
3805         x = int(tmpx);
3806         return c;
3807 }
3808
3809
3810 // returns pointer to a specified row
3811 Row * LyXText::getRow(Paragraph * par, pos_type pos, int & y) const
3812 {
3813         if (!firstrow)
3814                 return 0;
3815
3816         Row * tmprow = firstrow;
3817         y = 0;
3818
3819         // find the first row of the specified paragraph
3820         while (tmprow->next() && tmprow->par() != par) {
3821                 y += tmprow->height();
3822                 tmprow = tmprow->next();
3823         }
3824
3825         // now find the wanted row
3826         while (tmprow->pos() < pos
3827                && tmprow->next()
3828                && tmprow->next()->par() == par
3829                && tmprow->next()->pos() <= pos) {
3830                 y += tmprow->height();
3831                 tmprow = tmprow->next();
3832         }
3833
3834         return tmprow;
3835 }
3836
3837
3838 Row * LyXText::getRowNearY(int & y) const
3839 {
3840         // If possible we should optimize this method. (Lgb)
3841         Row * tmprow = firstrow;
3842         int tmpy = 0;
3843
3844         while (tmprow->next() && tmpy + tmprow->height() <= y) {
3845                 tmpy += tmprow->height();
3846                 tmprow = tmprow->next();
3847         }
3848
3849         y = tmpy;   // return the real y
3850         return tmprow;
3851 }
3852
3853
3854 int LyXText::getDepth() const
3855 {
3856         return cursor.par()->getDepth();
3857 }