src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braunstein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "coordcache.h"
  27 #include "cursor.h"
  28 #include "CutAndPaste.h"
  29 #include "debug.h"
  30 #include "dispatchresult.h"
  31 #include "factory.h"
  32 #include "FloatList.h"
  33 #include "funcrequest.h"
  34 #include "FuncStatus.h"
  35 #include "gettext.h"
  36 #include "intl.h"
  37 #include "insetiterator.h"
  38 #include "LaTeXFeatures.h"
  39 #include "lyx_cb.h" // added for Dispatch functions
  40 #include "lyx_main.h"
  41 #include "lyxfind.h"
  42 #include "lyxfunc.h"
  43 #include "lyxtext.h"
  44 #include "lyxrc.h"
  45 #include "session.h"
  46 #include "metricsinfo.h"
  47 #include "paragraph.h"
  48 #include "paragraph_funcs.h"
  49 #include "ParagraphParameters.h"
  50 #include "pariterator.h"
  51 #include "rowpainter.h"
  52 #include "toc.h"
  53 #include "undo.h"
  54 #include "vspace.h"
  55
  56 #include "insets/insetbibtex.h"
  57 #include "insets/insetref.h"
  58 #include "insets/insettext.h"
  59
  60 #include "frontends/Alert.h"
  61 #include "frontends/Clipboard.h"
  62 #include "frontends/Dialogs.h"
  63 #include "frontends/FileDialog.h"
  64 #include "frontends/font_metrics.h"
  65 #include "frontends/Gui.h"
  66 #include "frontends/LyXView.h"
  67 #include "frontends/WorkArea.h"
  68
  69 #include "graphics/Previews.h"
  70
  71 #include "support/convert.h"
  72 #include "support/filefilterlist.h"
  73 #include "support/filetools.h"
  74 #include "support/forkedcontr.h"
  75 #include "support/package.h"
  76 #include "support/types.h"
  77
  78 #include <boost/bind.hpp>
  79 #include <boost/current_function.hpp>
  80
  81 #include <functional>
  82 #include <vector>
  83
  84 using lyx::frontend::WorkArea;
  85 using lyx::frontend::Clipboard;
  86 using lyx::frontend::Gui;
  87
  88 using lyx::pos_type;
  89
  90 using lyx::support::addPath;
  91 using lyx::support::bformat;
  92 using lyx::support::FileFilterList;
  93 using lyx::support::fileSearch;
  94 using lyx::support::ForkedcallsController;
  95 using lyx::support::isDirWriteable;
  96 using lyx::support::makeDisplayPath;
  97 using lyx::support::makeAbsPath;
  98 using lyx::support::package;
  99
 100 using std::endl;
 101 using std::istringstream;
 102 using std::make_pair;
 103 using std::min;
 104 using std::max;
 105 using std::string;
 106 using std::mem_fun_ref;
 107 using std::vector;
 108
 109 extern BufferList bufferlist;
 110
 111
 112 namespace {
 113
 114 unsigned int const saved_positions_num = 20;
 115
 116 // All the below connection objects are needed because of a bug in some
 117 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 118 // to these connections we avoid a segfault upon startup, and also at exit.
 119 // (Lgb)
 120
 121 boost::signals::connection timecon;
 122
 123 /// Return an inset of this class if it exists at the current cursor position
 124 template <class T>
 125 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 126 {
 127         T * inset = 0;
 128         DocIterator it = cur;
 129         if (it.nextInset() &&
 130             it.nextInset()->lyxCode() == code) {
 131                 inset = static_cast<T*>(it.nextInset());
 132         }
 133         return inset;
 134 }
 135
 136 } // anon namespace
 137
 138
 139 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner)
 140         : bv_(&bv), owner_(owner), buffer_(0), wh_(0), cursor_timeout(400),
 141           using_xterm_cursor(false), cursor_(bv),
 142           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0), needs_redraw_(false)
 143 {
 144         xsel_cache_.set = false;
 145
 146         // Setup the signals
 147         timecon = cursor_timeout.timeout
 148                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 149
 150         cursor_timeout.start();
 151
 152         saved_positions.resize(saved_positions_num);
 153         // load saved bookmarks
 154         lyx::Session::BookmarkList & bmList = LyX::ref().session().loadBookmarks();
 155         for (lyx::Session::BookmarkList::iterator bm = bmList.begin();
 156                 bm != bmList.end(); ++bm)
 157                 if (bm->get<0>() < saved_positions_num)
 158                         saved_positions[bm->get<0>()] = Position( bm->get<1>(), bm->get<2>(), bm->get<3>() );
 159         // and then clear them
 160         bmList.clear();
 161 }
 162
 163
 164 void BufferView::Pimpl::addError(ErrorItem const & ei)
 165 {
 166         errorlist_.push_back(ei);
 167 }
 168
 169
 170 void BufferView::Pimpl::showReadonly(bool)
 171 {
 172         owner_->updateWindowTitle();
 173         owner_->getDialogs().updateBufferDependent(false);
 174 }
 175
 176
 177 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 178 {
 179         if (errorConnection_.connected())
 180                 disconnectBuffer();
 181
 182         errorConnection_ =
 183                 buf.error.connect(
 184                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 185
 186         messageConnection_ =
 187                 buf.message.connect(
 188                         boost::bind(&LyXView::message, owner_, _1));
 189
 190         busyConnection_ =
 191                 buf.busy.connect(
 192                         boost::bind(&LyXView::busy, owner_, _1));
 193
 194         titleConnection_ =
 195                 buf.updateTitles.connect(
 196                         boost::bind(&LyXView::updateWindowTitle, owner_));
 197
 198         timerConnection_ =
 199                 buf.resetAutosaveTimers.connect(
 200                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 201
 202         readonlyConnection_ =
 203                 buf.readonly.connect(
 204                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 205
 206         closingConnection_ =
 207                 buf.closing.connect(
 208                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 209 }
 210
 211
 212 void BufferView::Pimpl::disconnectBuffer()
 213 {
 214         errorConnection_.disconnect();
 215         messageConnection_.disconnect();
 216         busyConnection_.disconnect();
 217         titleConnection_.disconnect();
 218         timerConnection_.disconnect();
 219         readonlyConnection_.disconnect();
 220         closingConnection_.disconnect();
 221 }
 222
 223
 224 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 225         bool isNamed)
 226 {
 227         setBuffer(::newFile(filename, tname, isNamed));
 228 }
 229
 230
 231 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 232 {
 233         // Get absolute path of file and add ".lyx"
 234         // to the filename if necessary
 235         string s = fileSearch(string(), filename, "lyx");
 236
 237         bool const found = !s.empty();
 238
 239         if (!found)
 240                 s = filename;
 241
 242         // File already open?
 243         if (bufferlist.exists(s)) {
 244                 string const file = makeDisplayPath(s, 20);
 245                 string text = bformat(_("The document %1$s is already "
 246                                         "loaded.\n\nDo you want to revert "
 247                                         "to the saved version?"), file);
 248                 int const ret = Alert::prompt(_("Revert to saved document?"),
 249                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 250
 251                 if (ret != 0) {
 252                         setBuffer(bufferlist.getBuffer(s));
 253                         return true;
 254                 }
 255                 // FIXME: should be LFUN_REVERT
 256                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 257                         return false;
 258                 // Fall through to new load. (Asger)
 259         }
 260
 261         Buffer * b = 0;
 262
 263         if (found) {
 264                 b = bufferlist.newBuffer(s);
 265                 connectBuffer(*b);
 266                 if (!::loadLyXFile(b, s)) {
 267                         bufferlist.release(b);
 268                         return false;
 269                 }
 270         } else {
 271                 string text = bformat(_("The document %1$s does not yet "
 272                                         "exist.\n\nDo you want to create "
 273                                         "a new document?"), s);
 274                 int const ret = Alert::prompt(_("Create new document?"),
 275                          text, 0, 1, _("&Create"), _("Cancel"));
 276
 277                 if (ret == 0)
 278                         b = ::newFile(s, string(), true);
 279                 else
 280                         return false;
 281         }
 282
 283         setBuffer(b);
 284         bv_->showErrorList(_("Parse"));
 285
 286         // scroll to the position when the file was last closed
 287         if (lyxrc.use_lastfilepos) {
 288                 lyx::pit_type pit;
 289                 lyx::pos_type pos;
 290                 boost::tie(pit, pos) = LyX::ref().session().loadFilePosition(s);
 291                 // I am not sure how to separate the following part to a function
 292                 // so I will leave this to Lars.
 293                 //
 294                 // check pit since the document may be externally changed.
 295                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 296                         ParIterator it = b->par_iterator_begin();
 297                         ParIterator const end = b->par_iterator_end();
 298                         for (; it != end; ++it)
 299                                 if (it.pit() == pit) {
 300                                         // restored pos may be bigger than it->size
 301                                         bv_->setCursor(makeDocIterator(it, min(pos, it->size())));
 302                                         bv_->update(Update::FitCursor);
 303                                         break;
 304                                 }
 305                 }
 306         }
 307
 308         if (tolastfiles)
 309                 LyX::ref().session().addLastFile(b->fileName());
 310
 311         return true;
 312 }
 313
 314
 315 lyx::frontend::Gui & BufferView::Pimpl::gui() const
 316 {
 317         return owner_->gui();
 318 }
 319
 320
 321 int BufferView::Pimpl::width() const
 322 {
 323         return width_;
 324 }
 325
 326
 327 int BufferView::Pimpl::height() const
 328 {
 329         return height_;
 330 }
 331
 332
 333 void BufferView::Pimpl::setBuffer(Buffer * b)
 334 {
 335         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 336                             << "[ b = " << b << "]" << endl;
 337
 338         if (buffer_) {
 339                 disconnectBuffer();
 340                 // Save the actual cursor position and anchor inside the
 341                 // buffer so that it can be restored in case we rechange
 342                 // to this buffer later on.
 343                 buffer_->saveCursor(cursor_.selectionBegin(),
 344                                     cursor_.selectionEnd());
 345                 // current buffer is going to be switched-off, save cursor pos
 346                 LyX::ref().session().saveFilePosition(buffer_->fileName(),
 347                         boost::tie(cursor_.pit(), cursor_.pos()) );
 348         }
 349
 350         // If we are closing current buffer, switch to the first in
 351         // buffer list.
 352         if (!b) {
 353                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 354                                     << " No Buffer!" << endl;
 355                 // We are closing the buffer, use the first buffer as current
 356                 buffer_ = bufferlist.first();
 357                 owner_->getDialogs().hideBufferDependent();
 358         } else {
 359                 // Set current buffer
 360                 buffer_ = b;
 361         }
 362
 363         // Reset old cursor
 364         cursor_ = LCursor(*bv_);
 365         anchor_ref_ = 0;
 366         offset_ref_ = 0;
 367
 368
 369         // If we're quitting lyx, don't bother updating stuff
 370         if (quitting)
 371                 return;
 372
 373         if (buffer_) {
 374                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 375                                     << "Buffer addr: " << buffer_ << endl;
 376                 connectBuffer(*buffer_);
 377                 cursor_.push(buffer_->inset());
 378                 cursor_.resetAnchor();
 379                 buffer_->text().init(bv_);
 380                 buffer_->text().setCurrentFont(cursor_);
 381                 if (buffer_->getCursor().size() > 0 &&
 382                     buffer_->getAnchor().size() > 0)
 383                 {
 384                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 385                         cursor_.resetAnchor();
 386                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 387                         cursor_.setSelection();
 388                 }
 389
 390                 // Buffer-dependent dialogs should be updated or
 391                 // hidden. This should go here because some dialogs (eg ToC)
 392                 // require bv_->text.
 393                 owner_->getDialogs().updateBufferDependent(true);
 394         }
 395
 396         update();
 397         owner_->updateMenubar();
 398         owner_->updateToolbars();
 399         owner_->updateLayoutChoice();
 400         owner_->updateWindowTitle();
 401
 402         // This is done after the layout combox has been populated
 403         if (buffer_) {
 404                 size_t i = cursor_.depth() - 1;
 405                 // we know we'll eventually find a paragraph
 406                 while (true) {
 407                         CursorSlice const & slice = cursor_[i];
 408                         if (!slice.inset().inMathed()) {
 409                                 LyXLayout_ptr const layout = slice.paragraph().layout();
 410                                 owner_->setLayout(layout->name());
 411                                 break;
 412                         }
 413                         BOOST_ASSERT(i>0);
 414                         --i;
 415                 }
 416         }
 417
 418         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 419                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 420 }
 421
 422
 423 void BufferView::Pimpl::resizeCurrentBuffer()
 424 {
 425         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 426         owner_->busy(true);
 427         owner_->message(_("Formatting document..."));
 428
 429         LyXText * text = bv_->text();
 430         if (!text)
 431                 return;
 432
 433         text->init(bv_);
 434         update();
 435
 436         switchKeyMap();
 437         owner_->busy(false);
 438
 439         // Reset the "Formatting..." message
 440         owner_->clearMessage();
 441 }
 442
 443
 444 void BufferView::Pimpl::updateScrollbar()
 445 {
 446         if (!bv_->text()) {
 447                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 448                                      << " no text in updateScrollbar" << endl;
 449                 scrollbarParameters_.reset();
 450                 return;
 451         }
 452
 453         LyXText & t = *bv_->text();
 454         int const parsize = int(t.paragraphs().size() - 1);
 455         if (anchor_ref_ >  parsize)  {
 456                 anchor_ref_ = parsize;
 457                 offset_ref_ = 0;
 458         }
 459
 460         lyxerr[Debug::GUI]
 461                 << BOOST_CURRENT_FUNCTION
 462                 << " Updating scrollbar: height: " << t.paragraphs().size()
 463                 << " curr par: " << cursor_.bottom().pit()
 464                 << " default height " << defaultRowHeight() << endl;
 465
 466         // It would be better to fix the scrollbar to understand
 467         // values in [0..1] and divide everything by wh
 468
 469         // estimated average paragraph height:
 470         if (wh_ == 0)
 471                 wh_ = height_ / 4;
 472         int h = t.getPar(anchor_ref_).height();
 473
 474         // Normalize anchor/offset (MV):
 475         while (offset_ref_ > h && anchor_ref_ < parsize) {
 476                 anchor_ref_++;
 477                 offset_ref_ -= h;
 478                 h = t.getPar(anchor_ref_).height();
 479         }
 480         // Look at paragraph heights on-screen
 481         int sumh = 0;
 482         int nh = 0;
 483         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 484                 if (sumh > height_)
 485                         break;
 486                 int const h2 = t.getPar(pit).height();
 487                 sumh += h2;
 488                 nh++;
 489         }
 490         int const hav = sumh / nh;
 491         // More realistic average paragraph height
 492         if (hav > wh_)
 493                 wh_ = hav;
 494
 495         scrollbarParameters_.height = (parsize + 1) * wh_;
 496         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 497         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 498 }
 499
 500
 501 ScrollbarParameters const & BufferView::Pimpl::scrollbarParameters() const
 502 {
 503         return scrollbarParameters_;
 504 }
 505
 506
 507 void BufferView::Pimpl::scrollDocView(int value)
 508 {
 509         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 510                            << "[ value = " << value << "]" << endl;
 511
 512         if (!buffer_)
 513                 return;
 514
 515         owner_->gui().guiCursor().hide();
 516
 517         LyXText & t = *bv_->text();
 518
 519         float const bar = value / float(wh_ * t.paragraphs().size());
 520
 521         anchor_ref_ = int(bar * t.paragraphs().size());
 522         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 523                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 524         t.redoParagraph(anchor_ref_);
 525         int const h = t.getPar(anchor_ref_).height();
 526         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 527         update();
 528
 529         if (!lyxrc.cursor_follows_scrollbar)
 530                 return;
 531
 532         int const height = 2 * defaultRowHeight();
 533         int const first = height;
 534         int const last = height_ - height;
 535         LCursor & cur = cursor_;
 536
 537         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 538
 539         switch (st) {
 540         case bv_funcs::CUR_ABOVE:
 541                 t.setCursorFromCoordinates(cur, 0, first);
 542                 cur.clearSelection();
 543                 break;
 544         case bv_funcs::CUR_BELOW:
 545                 t.setCursorFromCoordinates(cur, 0, last);
 546                 cur.clearSelection();
 547                 break;
 548         case bv_funcs::CUR_INSIDE:
 549                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 550                 int const newy = min(last, max(y, first));
 551                 if (y != newy) {
 552                         cur.reset(buffer_->inset());
 553                         t.setCursorFromCoordinates(cur, 0, newy);
 554                 }
 555         }
 556         owner_->updateLayoutChoice();
 557 }
 558
 559
 560 void BufferView::Pimpl::scroll(int /*lines*/)
 561 {
 562 //      if (!buffer_)
 563 //              return;
 564 //
 565 //      LyXText const * t = bv_->text();
 566 //      int const line_height = defaultRowHeight();
 567 //
 568 //      // The new absolute coordinate
 569 //      int new_top_y = top_y() + lines * line_height;
 570 //
 571 //      // Restrict to a valid value
 572 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 573 //      new_top_y = std::max(0, new_top_y);
 574 //
 575 //      scrollDocView(new_top_y);
 576 //
 577 //      // Update the scrollbar.
 578 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 579 }
 580
 581
 582 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 583                                          key_modifier::state state)
 584 {
 585         owner_->getLyXFunc().processKeySym(key, state);
 586
 587         /* This is perhaps a bit of a hack. When we move
 588          * around, or type, it's nice to be able to see
 589          * the cursor immediately after the keypress. So
 590          * we reset the toggle timeout and force the visibility
 591          * of the cursor. Note we cannot do this inside
 592          * dispatch() itself, because that's called recursively.
 593          */
 594         if (available())
 595                 owner_->gui().guiCursor().show(*bv_);
 596 }
 597
 598
 599 void BufferView::Pimpl::selectionRequested()
 600 {
 601         static string sel;
 602
 603         if (!available())
 604                 return;
 605
 606         LCursor & cur = cursor_;
 607
 608         if (!cur.selection()) {
 609                 xsel_cache_.set = false;
 610                 return;
 611         }
 612
 613         if (!xsel_cache_.set ||
 614             cur.top() != xsel_cache_.cursor ||
 615             cur.anchor_.top() != xsel_cache_.anchor)
 616         {
 617                 xsel_cache_.cursor = cur.top();
 618                 xsel_cache_.anchor = cur.anchor_.top();
 619                 xsel_cache_.set = cur.selection();
 620                 sel = cur.selectionAsString(false);
 621                 if (!sel.empty())
 622                         owner_->gui().clipboard().put(sel);
 623         }
 624 }
 625
 626
 627 void BufferView::Pimpl::selectionLost()
 628 {
 629         if (available()) {
 630                 owner_->gui().guiCursor().hide();
 631                 cursor_.clearSelection();
 632                 xsel_cache_.set = false;
 633         }
 634 }
 635
 636
 637 void BufferView::Pimpl::workAreaResize(int width, int height)
 638 {
 639         bool const widthChange = width != width_;
 640         bool const heightChange = height != height_;
 641
 642         // Update from work area
 643         width_ = width;
 644         height_ = height;
 645
 646         if (buffer_ && widthChange) {
 647                 // The visible LyXView need a resize
 648                 resizeCurrentBuffer();
 649         }
 650
 651         if (widthChange || heightChange)
 652                 update();
 653
 654         owner_->updateLayoutChoice();
 655 }
 656
 657
 658 bool BufferView::Pimpl::fitCursor()
 659 {
 660         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 661                 LyXFont const font = cursor_.getFont();
 662                 int const asc = font_metrics::maxAscent(font);
 663                 int const des = font_metrics::maxDescent(font);
 664                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 665                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 666                         return false;
 667         }
 668         center();
 669         return true;
 670 }
 671
 672
 673 bool BufferView::Pimpl::multiParSel()
 674 {
 675         if (!cursor_.selection())
 676                 return false;
 677         bool ret = multiparsel_cache_;
 678         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 679         // Either this, or previous selection spans paragraphs
 680         return ret || multiparsel_cache_;
 681 }
 682
 683
 684 ViewMetricsInfo const & BufferView::Pimpl::viewMetricsInfo()
 685 {
 686         return metrics_info_;
 687 }
 688
 689
 690 void BufferView::Pimpl::update(Update::flags flags)
 691 {
 692         // This is close to a hot-path.
 693         if (lyxerr.debugging(Debug::DEBUG)) {
 694                 lyxerr[Debug::DEBUG]
 695                         << BOOST_CURRENT_FUNCTION
 696                         << "[fitcursor = " << (flags & Update::FitCursor)
 697                         << ", forceupdate = " << (flags & Update::Force)
 698                         << ", singlepar = " << (flags & Update::SinglePar)
 699                         << "]  buffer: " << buffer_ << endl;
 700         }
 701
 702         // Check needed to survive LyX startup
 703         if (buffer_) {
 704                 // Update macro store
 705                 buffer_->buildMacros();
 706
 707                 // First drawing step
 708                 bool singlePar = flags & Update::SinglePar;
 709                 needs_redraw_ = flags & (Update::Force | Update::SinglePar);
 710
 711                 if ((flags & (Update::FitCursor | Update::MultiParSel))
 712                     && (fitCursor() || multiParSel())) {
 713                         needs_redraw_ = true;
 714                         singlePar = false;
 715                 }
 716
 717                 if (needs_redraw_) {
 718                         // Second drawing step
 719                         updateMetrics(singlePar);
 720                 }
 721         }
 722
 723         owner_->redrawWorkArea();
 724         owner_->view_state_changed();
 725 }
 726
 727
 728 // Callback for cursor timer
 729 void BufferView::Pimpl::cursorToggle()
 730 {
 731         if (buffer_) {
 732                 owner_->gui().guiCursor().toggle(*bv_);
 733
 734                 // Use this opportunity to deal with any child processes that
 735                 // have finished but are waiting to communicate this fact
 736                 // to the rest of LyX.
 737                 ForkedcallsController & fcc = ForkedcallsController::get();
 738                 fcc.handleCompletedProcesses();
 739         }
 740
 741         cursor_timeout.restart();
 742 }
 743
 744
 745 bool BufferView::Pimpl::available() const
 746 {
 747         return buffer_ && bv_->text();
 748 }
 749
 750
 751 Change const BufferView::Pimpl::getCurrentChange()
 752 {
 753         if (!buffer_->params().tracking_changes)
 754                 return Change(Change::UNCHANGED);
 755
 756         LyXText * text = bv_->getLyXText();
 757         LCursor & cur = cursor_;
 758
 759         if (!cur.selection())
 760                 return Change(Change::UNCHANGED);
 761
 762         return text->getPar(cur.selBegin().pit()).
 763                         lookupChange(cur.selBegin().pos());
 764 }
 765
 766
 767 void BufferView::Pimpl::savePosition(unsigned int i)
 768 {
 769         if (i >= saved_positions_num)
 770                 return;
 771         BOOST_ASSERT(cursor_.inTexted());
 772         saved_positions[i] = Position(buffer_->fileName(),
 773                                       cursor_.paragraph().id(),
 774                                       cursor_.pos());
 775         if (i > 0)
 776                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 777 }
 778
 779
 780 void BufferView::Pimpl::restorePosition(unsigned int i)
 781 {
 782         if (i >= saved_positions_num)
 783                 return;
 784
 785         string const fname = saved_positions[i].filename;
 786
 787         cursor_.clearSelection();
 788
 789         if (fname != buffer_->fileName()) {
 790                 Buffer * b = 0;
 791                 if (bufferlist.exists(fname))
 792                         b = bufferlist.getBuffer(fname);
 793                 else {
 794                         b = bufferlist.newBuffer(fname);
 795                         // Don't ask, just load it
 796                         ::loadLyXFile(b, fname);
 797                 }
 798                 if (b)
 799                         setBuffer(b);
 800         }
 801
 802         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 803         if (par == buffer_->par_iterator_end())
 804                 return;
 805
 806         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 807
 808         if (i > 0)
 809                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 810 }
 811
 812
 813 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 814 {
 815         return i < saved_positions_num && !saved_positions[i].filename.empty();
 816 }
 817
 818
 819 void BufferView::Pimpl::saveSavedPositions()
 820 {
 821         // save bookmarks. It is better to use the pit interface
 822         // but I do not know how to effectively convert between
 823         // par_id and pit.
 824         for (unsigned int i=1; i < saved_positions_num; ++i) {
 825                 if ( isSavedPosition(i) )
 826                         LyX::ref().session().saveBookmark( boost::tie(
 827                                 i,
 828                                 saved_positions[i].filename,
 829                                 saved_positions[i].par_id,
 830                                 saved_positions[i].par_pos) );
 831         }
 832 }
 833
 834
 835 void BufferView::Pimpl::switchKeyMap()
 836 {
 837         if (!lyxrc.rtl_support)
 838                 return;
 839
 840         Intl & intl = owner_->getIntl();
 841         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 842                 if (intl.keymap == Intl::PRIMARY)
 843                         intl.keyMapSec();
 844         } else {
 845                 if (intl.keymap == Intl::SECONDARY)
 846                         intl.keyMapPrim();
 847         }
 848 }
 849
 850
 851 void BufferView::Pimpl::center()
 852 {
 853         CursorSlice & bot = cursor_.bottom();
 854         lyx::pit_type const pit = bot.pit();
 855         bot.text()->redoParagraph(pit);
 856         Paragraph const & par = bot.text()->paragraphs()[pit];
 857         anchor_ref_ = pit;
 858         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 859                 + par.ascent() - height_ / 2;
 860 }
 861
 862
 863
 864 void BufferView::Pimpl::menuInsertLyXFile(string const & filenm)
 865 {
 866         BOOST_ASSERT(cursor_.inTexted());
 867         string filename = filenm;
 868
 869         if (filename.empty()) {
 870                 // Launch a file browser
 871                 string initpath = lyxrc.document_path;
 872
 873                 if (available()) {
 874                         string const trypath = owner_->buffer()->filePath();
 875                         // If directory is writeable, use this as default.
 876                         if (isDirWriteable(trypath))
 877                                 initpath = trypath;
 878                 }
 879
 880                 FileDialog fileDlg(_("Select LyX document to insert"),
 881                         LFUN_FILE_INSERT,
 882                         make_pair(string(_("Documents|#o#O")),
 883                                   string(lyxrc.document_path)),
 884                         make_pair(string(_("Examples|#E#e")),
 885                                   string(addPath(package().system_support(), "examples"))));
 886
 887                 FileDialog::Result result =
 888                         fileDlg.open(initpath,
 889                                      FileFilterList(_("LyX Documents (*.lyx)")),
 890                                      string());
 891
 892                 if (result.first == FileDialog::Later)
 893                         return;
 894
 895                 filename = result.second;
 896
 897                 // check selected filename
 898                 if (filename.empty()) {
 899                         owner_->message(_("Canceled."));
 900                         return;
 901                 }
 902         }
 903
 904         // Get absolute path of file and add ".lyx"
 905         // to the filename if necessary
 906         filename = fileSearch(string(), filename, "lyx");
 907
 908         string const disp_fn = makeDisplayPath(filename);
 909         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 910
 911         string res;
 912         Buffer buf("", false);
 913         buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 914         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
 915                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
 916                                              buf.params().textclass);
 917                 res = _("Document %1$s inserted.");
 918         } else
 919                 res = _("Could not insert document %1$s");
 920
 921         owner_->message(bformat(res, disp_fn));
 922         bv_->showErrorList(_("Document insertion"));
 923         resizeCurrentBuffer();
 924 }
 925
 926
 927 void BufferView::Pimpl::trackChanges()
 928 {
 929         bool const tracking = buffer_->params().tracking_changes;
 930
 931         if (!tracking) {
 932                 for_each(buffer_->par_iterator_begin(),
 933                          buffer_->par_iterator_end(),
 934                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 935                 buffer_->params().tracking_changes = true;
 936
 937                 // We cannot allow undos beyond the freeze point
 938                 buffer_->undostack().clear();
 939         } else {
 940                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
 941                 if (lyx::find::findNextChange(bv_)) {
 942                         owner_->getDialogs().show("changes");
 943                         return;
 944                 }
 945
 946                 for_each(buffer_->par_iterator_begin(),
 947                          buffer_->par_iterator_end(),
 948                          mem_fun_ref(&Paragraph::untrackChanges));
 949
 950                 buffer_->params().tracking_changes = false;
 951         }
 952
 953         buffer_->redostack().clear();
 954 }
 955
 956
 957 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 958 {
 959         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
 960
 961         // This is only called for mouse related events including
 962         // LFUN_FILE_OPEN generated by drag-and-drop.
 963         FuncRequest cmd = cmd0;
 964
 965         // Handle drag&drop
 966         if (cmd.action == LFUN_FILE_OPEN) {
 967                 owner_->dispatch(cmd);
 968                 return true;
 969         }
 970
 971         if (!buffer_)
 972                 return false;
 973
 974         LCursor cur(*bv_);
 975         cur.push(buffer_->inset());
 976         cur.selection() = cursor_.selection();
 977
 978         // Doesn't go through lyxfunc, so we need to update
 979         // the layout choice etc. ourselves
 980
 981         // E.g. Qt mouse press when no buffer
 982         if (!available())
 983                 return false;
 984
 985         owner_->gui().guiCursor().hide();
 986
 987         // Either the inset under the cursor or the
 988         // surrounding LyXText will handle this event.
 989
 990         // Build temporary cursor.
 991         cmd.y = min(max(cmd.y, -1), height_);
 992         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 993         //lyxerr << BOOST_CURRENT_FUNCTION
 994         //       << " * hit inset at tip: " << inset << endl;
 995         //lyxerr << BOOST_CURRENT_FUNCTION
 996         //       << " * created temp cursor:" << cur << endl;
 997
 998         // Put anchor at the same position.
 999         cur.resetAnchor();
1000
1001         // Try to dispatch to an non-editable inset near this position
1002         // via the temp cursor. If the inset wishes to change the real
1003         // cursor it has to do so explicitly by using
1004         //  cur.bv().cursor() = cur;  (or similar)
1005         if (inset)
1006                 inset->dispatch(cur, cmd);
1007
1008         // Now dispatch to the temporary cursor. If the real cursor should
1009         // be modified, the inset's dispatch has to do so explicitly.
1010         if (!cur.result().dispatched())
1011                 cur.dispatch(cmd);
1012
1013         if (cur.result().dispatched()) {
1014                 // Redraw if requested or necessary.
1015                 if (cur.result().update())
1016                         update(Update::FitCursor | Update::Force);
1017                 else
1018                         update(Update::FitCursor | Update::MultiParSel);
1019         }
1020
1021         // See workAreaKeyPress
1022         cursor_timeout.restart();
1023         owner_->gui().guiCursor().show(*bv_);
1024
1025         // Skip these when selecting
1026         if (cmd.action != LFUN_MOUSE_MOTION) {
1027                 owner_->updateLayoutChoice();
1028                 owner_->updateToolbars();
1029         }
1030
1031         // Slight hack: this is only called currently when we
1032         // clicked somewhere, so we force through the display
1033         // of the new status here.
1034         owner_->clearMessage();
1035         return true;
1036 }
1037
1038
1039 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
1040 {
1041         FuncStatus flag;
1042
1043         switch (cmd.action) {
1044
1045         case LFUN_UNDO:
1046                 flag.enabled(!buffer_->undostack().empty());
1047                 break;
1048         case LFUN_REDO:
1049                 flag.enabled(!buffer_->redostack().empty());
1050                 break;
1051         case LFUN_FILE_INSERT:
1052         case LFUN_FILE_INSERT_ASCII_PARA:
1053         case LFUN_FILE_INSERT_ASCII:
1054         case LFUN_BOOKMARK_SAVE:
1055                 // FIXME: Actually, these LFUNS should be moved to LyXText
1056                 flag.enabled(cursor_.inTexted());
1057                 break;
1058         case LFUN_FONT_STATE:
1059         case LFUN_LABEL_INSERT:
1060         case LFUN_PARAGRAPH_GOTO:
1061         // FIXME handle non-trivially
1062         case LFUN_OUTLINE_UP:
1063         case LFUN_OUTLINE_DOWN:
1064         case LFUN_OUTLINE_IN:
1065         case LFUN_OUTLINE_OUT:
1066         case LFUN_ERROR_NEXT:
1067         case LFUN_NOTE_NEXT:
1068         case LFUN_REFERENCE_NEXT:
1069         case LFUN_WORD_FIND:
1070         case LFUN_WORD_REPLACE:
1071         case LFUN_MARK_OFF:
1072         case LFUN_MARK_ON:
1073         case LFUN_MARK_TOGGLE:
1074         case LFUN_SCREEN_RECENTER:
1075         case LFUN_BIBTEX_DATABASE_ADD:
1076         case LFUN_BIBTEX_DATABASE_DEL:
1077         case LFUN_WORDS_COUNT:
1078                 flag.enabled(true);
1079                 break;
1080
1081         case LFUN_LABEL_GOTO: {
1082                 flag.enabled(!cmd.argument.empty()
1083                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
1084                 break;
1085         }
1086
1087         case LFUN_BOOKMARK_GOTO:
1088                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
1089                 break;
1090         case LFUN_CHANGES_TRACK:
1091                 flag.enabled(true);
1092                 flag.setOnOff(buffer_->params().tracking_changes);
1093                 break;
1094
1095         case LFUN_CHANGES_OUTPUT: {
1096                 OutputParams runparams;
1097                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
1098                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1099                         && features.isAvailable("dvipost"));
1100                 flag.setOnOff(buffer_->params().output_changes);
1101                 break;
1102         }
1103
1104         case LFUN_CHANGES_MERGE:
1105         case LFUN_CHANGE_ACCEPT: // what about these two
1106         case LFUN_CHANGE_REJECT: // what about these two
1107         case LFUN_ALL_CHANGES_ACCEPT:
1108         case LFUN_ALL_CHANGES_REJECT:
1109                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1110                 break;
1111
1112         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
1113                 flag.setOnOff(buffer_->params().compressed);
1114                 break;
1115         }
1116
1117         default:
1118                 flag.enabled(false);
1119         }
1120
1121         return flag;
1122 }
1123
1124
1125
1126 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1127 {
1128         //lyxerr << BOOST_CURRENT_FUNCTION
1129         //       << [ cmd = " << cmd << "]" << endl;
1130
1131         // Make sure that the cached BufferView is correct.
1132         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1133                 << " action[" << cmd.action << ']'
1134                 << " arg[" << cmd.argument << ']'
1135                 << " x[" << cmd.x << ']'
1136                 << " y[" << cmd.y << ']'
1137                 << " button[" << cmd.button() << ']'
1138                 << endl;
1139
1140         LCursor & cur = cursor_;
1141
1142         switch (cmd.action) {
1143
1144         case LFUN_UNDO:
1145                 if (available()) {
1146                         cur.message(_("Undo"));
1147                         cur.clearSelection();
1148                         if (!textUndo(*bv_))
1149                                 cur.message(_("No further undo information"));
1150                         update();
1151                         switchKeyMap();
1152                 }
1153                 break;
1154
1155         case LFUN_REDO:
1156                 if (available()) {
1157                         cur.message(_("Redo"));
1158                         cur.clearSelection();
1159                         if (!textRedo(*bv_))
1160                                 cur.message(_("No further redo information"));
1161                         update();
1162                         switchKeyMap();
1163                 }
1164                 break;
1165
1166         case LFUN_FILE_INSERT:
1167                 menuInsertLyXFile(cmd.argument);
1168                 break;
1169
1170         case LFUN_FILE_INSERT_ASCII_PARA:
1171                 insertAsciiFile(bv_, cmd.argument, true);
1172                 break;
1173
1174         case LFUN_FILE_INSERT_ASCII:
1175                 insertAsciiFile(bv_, cmd.argument, false);
1176                 break;
1177
1178         case LFUN_FONT_STATE:
1179                 cur.message(cur.currentState());
1180                 break;
1181
1182         case LFUN_BOOKMARK_SAVE:
1183                 savePosition(convert<unsigned int>(cmd.argument));
1184                 break;
1185
1186         case LFUN_BOOKMARK_GOTO:
1187                 restorePosition(convert<unsigned int>(cmd.argument));
1188                 break;
1189
1190         case LFUN_LABEL_GOTO: {
1191                 string label = cmd.argument;
1192                 if (label.empty()) {
1193                         InsetRef * inset =
1194                                 getInsetByCode<InsetRef>(cursor_,
1195                                                          InsetBase::REF_CODE);
1196                         if (inset) {
1197                                 label = inset->getContents();
1198                                 savePosition(0);
1199                         }
1200                 }
1201
1202                 if (!label.empty())
1203                         bv_->gotoLabel(label);
1204                 break;
1205         }
1206
1207         case LFUN_PARAGRAPH_GOTO: {
1208                 int const id = convert<int>(cmd.argument);
1209                 ParIterator par = buffer_->getParFromID(id);
1210                 if (par == buffer_->par_iterator_end()) {
1211                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1212                                             << id << ']' << endl;
1213                         break;
1214                 } else {
1215                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1216                                             << " found." << endl;
1217                 }
1218
1219                 // Set the cursor
1220                 bv_->setCursor(makeDocIterator(par, 0));
1221
1222                 update();
1223                 switchKeyMap();
1224                 break;
1225         }
1226
1227         case LFUN_OUTLINE_UP:
1228                 lyx::toc::outline(lyx::toc::Up, cursor_);
1229                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
1230                 updateLabels(*buffer_);
1231                 break;
1232         case LFUN_OUTLINE_DOWN:
1233                 lyx::toc::outline(lyx::toc::Down, cursor_);
1234                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
1235                 updateLabels(*buffer_);
1236                 break;
1237         case LFUN_OUTLINE_IN:
1238                 lyx::toc::outline(lyx::toc::In, cursor_);
1239                 updateLabels(*buffer_);
1240                 break;
1241         case LFUN_OUTLINE_OUT:
1242                 lyx::toc::outline(lyx::toc::Out, cursor_);
1243                 updateLabels(*buffer_);
1244                 break;
1245
1246         case LFUN_ERROR_NEXT:
1247                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1248                 break;
1249
1250         case LFUN_NOTE_NEXT:
1251                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1252                 break;
1253
1254         case LFUN_REFERENCE_NEXT: {
1255                 vector<InsetBase_code> tmp;
1256                 tmp.push_back(InsetBase::LABEL_CODE);
1257                 tmp.push_back(InsetBase::REF_CODE);
1258                 bv_funcs::gotoInset(bv_, tmp, true);
1259                 break;
1260         }
1261
1262         case LFUN_CHANGES_TRACK:
1263                 trackChanges();
1264                 break;
1265
1266         case LFUN_CHANGES_OUTPUT: {
1267                 bool const state = buffer_->params().output_changes;
1268                 buffer_->params().output_changes = !state;
1269                 break;
1270         }
1271
1272         case LFUN_CHANGES_MERGE:
1273                 if (lyx::find::findNextChange(bv_))
1274                         owner_->getDialogs().show("changes");
1275                 break;
1276
1277         case LFUN_ALL_CHANGES_ACCEPT: {
1278                 cursor_.reset(buffer_->inset());
1279 #ifdef WITH_WARNINGS
1280 #warning FIXME changes
1281 #endif
1282                 while (lyx::find::findNextChange(bv_))
1283                         bv_->getLyXText()->acceptChange(cursor_);
1284                 update();
1285                 break;
1286         }
1287
1288         case LFUN_ALL_CHANGES_REJECT: {
1289                 cursor_.reset(buffer_->inset());
1290 #ifdef WITH_WARNINGS
1291 #warning FIXME changes
1292 #endif
1293                 while (lyx::find::findNextChange(bv_))
1294                         bv_->getLyXText()->rejectChange(cursor_);
1295                 break;
1296         }
1297
1298         case LFUN_WORD_FIND:
1299                 lyx::find::find(bv_, cmd);
1300                 break;
1301
1302         case LFUN_WORD_REPLACE:
1303                 lyx::find::replace(bv_, cmd);
1304                 break;
1305
1306         case LFUN_MARK_OFF:
1307                 cur.clearSelection();
1308                 cur.resetAnchor();
1309                 cur.message(N_("Mark off"));
1310                 break;
1311
1312         case LFUN_MARK_ON:
1313                 cur.clearSelection();
1314                 cur.mark() = true;
1315                 cur.resetAnchor();
1316                 cur.message(N_("Mark on"));
1317                 break;
1318
1319         case LFUN_MARK_TOGGLE:
1320                 cur.clearSelection();
1321                 if (cur.mark()) {
1322                         cur.mark() = false;
1323                         cur.message(N_("Mark removed"));
1324                 } else {
1325                         cur.mark() = true;
1326                         cur.message(N_("Mark set"));
1327                 }
1328                 cur.resetAnchor();
1329                 break;
1330
1331         case LFUN_SCREEN_RECENTER:
1332                 center();
1333                 break;
1334
1335         case LFUN_BIBTEX_DATABASE_ADD: {
1336                 LCursor tmpcur = cursor_;
1337                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1338                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1339                                                 InsetBase::BIBTEX_CODE);
1340                 if (inset) {
1341                         if (inset->addDatabase(cmd.argument))
1342                                 buffer_->updateBibfilesCache();
1343                 }
1344                 break;
1345         }
1346
1347         case LFUN_BIBTEX_DATABASE_DEL: {
1348                 LCursor tmpcur = cursor_;
1349                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1350                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1351                                                 InsetBase::BIBTEX_CODE);
1352                 if (inset) {
1353                         if (inset->delDatabase(cmd.argument))
1354                                 buffer_->updateBibfilesCache();
1355                 }
1356                 break;
1357         }
1358
1359         case LFUN_WORDS_COUNT: {
1360                 DocIterator from, to;
1361                 if (cur.selection()) {
1362                         from = cur.selectionBegin();
1363                         to = cur.selectionEnd();
1364                 } else {
1365                         from = doc_iterator_begin(buffer_->inset());
1366                         to = doc_iterator_end(buffer_->inset());
1367                 }
1368                 int const count = countWords(from, to);
1369                 string message;
1370                 if (count != 1) {
1371                         if (cur.selection())
1372                                 message = bformat(_("%1$d words in selection."),
1373                                           count);
1374                                 else
1375                                         message = bformat(_("%1$d words in document."),
1376                                                           count);
1377                 }
1378                 else {
1379                         if (cur.selection())
1380                                 message = _("One word in selection.");
1381                         else
1382                                 message = _("One word in document.");
1383                 }
1384
1385                 Alert::information(_("Count words"), message);
1386         }
1387                 break;
1388
1389         case LFUN_BUFFER_TOGGLE_COMPRESSION:
1390                 // turn compression on/off
1391                 buffer_->params().compressed = !buffer_->params().compressed;
1392                 break;
1393
1394         default:
1395                 return false;
1396         }
1397
1398         return true;
1399 }
1400
1401
1402 void BufferView::Pimpl::updateMetrics(bool singlepar)
1403 {
1404         // Remove old position cache
1405         theCoords.clear();
1406         BufferView & bv = *bv_;
1407         LyXText * const text = bv.text();
1408         lyx::pit_type size = int(text->paragraphs().size());
1409
1410         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1411                 anchor_ref_ = int(text->paragraphs().size() - 1);
1412                 offset_ref_ = 0;
1413         }
1414
1415         lyx::pit_type const pit = anchor_ref_;
1416         int pit1 = pit;
1417         int pit2 = pit;
1418         size_t const npit = text->paragraphs().size();
1419
1420         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1421         // the (main text, not inset!) paragraph containing the cursor.
1422         // (if this paragraph contains insets etc., rebreaking will
1423         // recursively descend)
1424         if (!singlepar || pit == cursor_.bottom().pit())
1425                 text->redoParagraph(pit);
1426         int y0 = text->getPar(pit).ascent() - offset_ref_;
1427
1428         // Redo paragraphs above anchor if necessary; again, in Single Par
1429         // mode, only if we encounter the (main text) one having the cursor.
1430         int y1 = y0;
1431         while (y1 > 0 && pit1 > 0) {
1432                 y1 -= text->getPar(pit1).ascent();
1433                 --pit1;
1434                 if (!singlepar || pit1 == cursor_.bottom().pit())
1435                         text->redoParagraph(pit1);
1436                 y1 -= text->getPar(pit1).descent();
1437         }
1438
1439
1440         // Take care of ascent of first line
1441         y1 -= text->getPar(pit1).ascent();
1442
1443         // Normalize anchor for next time
1444         anchor_ref_ = pit1;
1445         offset_ref_ = -y1;
1446
1447         // Grey at the beginning is ugly
1448         if (pit1 == 0 && y1 > 0) {
1449                 y0 -= y1;
1450                 y1 = 0;
1451                 anchor_ref_ = 0;
1452         }
1453
1454         // Redo paragraphs below the anchor if necessary. Single par mode:
1455         // only the one containing the cursor if encountered.
1456         int y2 = y0;
1457         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1458                 y2 += text->getPar(pit2).descent();
1459                 ++pit2;
1460                 if (!singlepar || pit2 == cursor_.bottom().pit())
1461                         text->redoParagraph(pit2);
1462                 y2 += text->getPar(pit2).ascent();
1463         }
1464
1465         // Take care of descent of last line
1466         y2 += text->getPar(pit2).descent();
1467
1468         // The coordinates of all these paragraphs are correct, cache them
1469         int y = y1;
1470         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1471                 y += text->getPar(pit).ascent();
1472                 theCoords.parPos()[text][pit] = Point(0, y);
1473                 if (singlepar && pit == cursor_.bottom().pit()) {
1474                         // In Single Paragraph mode, collect here the
1475                         // y1 and y2 of the (one) paragraph the cursor is in
1476                         y1 = y - text->getPar(pit).ascent();
1477                         y2 = y + text->getPar(pit).descent();
1478                 }
1479                 y += text->getPar(pit).descent();
1480         }
1481
1482         if (singlepar) {
1483                 // collect cursor paragraph iter bounds
1484                 pit1 = cursor_.bottom().pit();
1485                 pit2 = cursor_.bottom().pit();
1486         }
1487
1488         lyxerr[Debug::DEBUG]
1489                 << BOOST_CURRENT_FUNCTION
1490                 << " y1: " << y1
1491                 << " y2: " << y2
1492                 << " pit1: " << pit1
1493                 << " pit2: " << pit2
1494                 << " npit: " << npit
1495                 << " singlepar: " << singlepar
1496                 << "size: " << size
1497                 << endl;
1498
1499         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1500 }