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 "debug.h"
  29 #include "dispatchresult.h"
  30 #include "factory.h"
  31 #include "FloatList.h"
  32 #include "funcrequest.h"
  33 #include "FuncStatus.h"
  34 #include "gettext.h"
  35 #include "intl.h"
  36 #include "insetiterator.h"
  37 #include "LaTeXFeatures.h"
  38 #include "lyx_cb.h" // added for Dispatch functions
  39 #include "lyx_main.h"
  40 #include "lyxfind.h"
  41 #include "lyxfunc.h"
  42 #include "lyxtext.h"
  43 #include "lyxrc.h"
  44 #include "lastfiles.h"
  45 #include "metricsinfo.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "rowpainter.h"
  51 #include "undo.h"
  52 #include "vspace.h"
  53
  54 #include "insets/insetbibtex.h"
  55 #include "insets/insetref.h"
  56 #include "insets/insettext.h"
  57
  58 #include "frontends/Alert.h"
  59 #include "frontends/Dialogs.h"
  60 #include "frontends/FileDialog.h"
  61 #include "frontends/font_metrics.h"
  62 #include "frontends/LyXView.h"
  63 #include "frontends/LyXScreenFactory.h"
  64 #include "frontends/screen.h"
  65 #include "frontends/WorkArea.h"
  66 #include "frontends/WorkAreaFactory.h"
  67
  68 #include "graphics/Previews.h"
  69
  70 #include "support/convert.h"
  71 #include "support/filefilterlist.h"
  72 #include "support/filetools.h"
  73 #include "support/forkedcontr.h"
  74 #include "support/package.h"
  75 #include "support/types.h"
  76
  77 #include <boost/bind.hpp>
  78 #include <boost/current_function.hpp>
  79
  80 #include <functional>
  81 #include <vector>
  82
  83 using lyx::pos_type;
  84
  85 using lyx::support::AddPath;
  86 using lyx::support::bformat;
  87 using lyx::support::FileFilterList;
  88 using lyx::support::FileSearch;
  89 using lyx::support::ForkedcallsController;
  90 using lyx::support::IsDirWriteable;
  91 using lyx::support::MakeDisplayPath;
  92 using lyx::support::MakeAbsPath;
  93 using lyx::support::package;
  94
  95 using std::endl;
  96 using std::istringstream;
  97 using std::make_pair;
  98 using std::min;
  99 using std::max;
 100 using std::string;
 101 using std::mem_fun_ref;
 102 using std::vector;
 103
 104
 105 extern BufferList bufferlist;
 106
 107
 108 namespace {
 109
 110 unsigned int const saved_positions_num = 20;
 111
 112 // All the below connection objects are needed because of a bug in some
 113 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 114 // to these connections we avoid a segfault upon startup, and also at exit.
 115 // (Lgb)
 116
 117 boost::signals::connection dispatchcon;
 118 boost::signals::connection timecon;
 119 boost::signals::connection doccon;
 120 boost::signals::connection resizecon;
 121 boost::signals::connection kpresscon;
 122 boost::signals::connection selectioncon;
 123 boost::signals::connection lostcon;
 124
 125
 126 /// Return an inset of this class if it exists at the current cursor position
 127 template <class T>
 128 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 129 {
 130         T * inset = 0;
 131         DocIterator it = cur;
 132         if (it.nextInset() &&
 133             it.nextInset()->lyxCode() == code) {
 134                 inset = static_cast<T*>(it.nextInset());
 135         }
 136         return inset;
 137 }
 138
 139 } // anon namespace
 140
 141
 142 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 143                          int width, int height)
 144         : bv_(&bv), owner_(owner), buffer_(0), wh_(0), cursor_timeout(400),
 145           using_xterm_cursor(false), cursor_(bv),
 146           anchor_ref_(0), offset_ref_(0)
 147 {
 148         xsel_cache_.set = false;
 149
 150         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 151         screen_.reset(LyXScreenFactory::create(workarea()));
 152
 153         // Setup the signals
 154         doccon = workarea().scrollDocView
 155                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 156         resizecon = workarea().workAreaResize
 157                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 158         dispatchcon = workarea().dispatch
 159                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 160         kpresscon = workarea().workAreaKeyPress
 161                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 162         selectioncon = workarea().selectionRequested
 163                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 164         lostcon = workarea().selectionLost
 165                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 166
 167         timecon = cursor_timeout.timeout
 168                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 169         cursor_timeout.start();
 170         saved_positions.resize(saved_positions_num);
 171 }
 172
 173
 174 void BufferView::Pimpl::addError(ErrorItem const & ei)
 175 {
 176         errorlist_.push_back(ei);
 177 }
 178
 179
 180 void BufferView::Pimpl::showReadonly(bool)
 181 {
 182         owner_->updateWindowTitle();
 183         owner_->getDialogs().updateBufferDependent(false);
 184 }
 185
 186
 187 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 188 {
 189         if (errorConnection_.connected())
 190                 disconnectBuffer();
 191
 192         errorConnection_ =
 193                 buf.error.connect(
 194                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 195
 196         messageConnection_ =
 197                 buf.message.connect(
 198                         boost::bind(&LyXView::message, owner_, _1));
 199
 200         busyConnection_ =
 201                 buf.busy.connect(
 202                         boost::bind(&LyXView::busy, owner_, _1));
 203
 204         titleConnection_ =
 205                 buf.updateTitles.connect(
 206                         boost::bind(&LyXView::updateWindowTitle, owner_));
 207
 208         timerConnection_ =
 209                 buf.resetAutosaveTimers.connect(
 210                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 211
 212         readonlyConnection_ =
 213                 buf.readonly.connect(
 214                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 215
 216         closingConnection_ =
 217                 buf.closing.connect(
 218                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 219 }
 220
 221
 222 void BufferView::Pimpl::disconnectBuffer()
 223 {
 224         errorConnection_.disconnect();
 225         messageConnection_.disconnect();
 226         busyConnection_.disconnect();
 227         titleConnection_.disconnect();
 228         timerConnection_.disconnect();
 229         readonlyConnection_.disconnect();
 230         closingConnection_.disconnect();
 231 }
 232
 233
 234 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 235         bool isNamed)
 236 {
 237         setBuffer(::newFile(filename, tname, isNamed));
 238 }
 239
 240
 241 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 242 {
 243         // Get absolute path of file and add ".lyx"
 244         // to the filename if necessary
 245         string s = FileSearch(string(), filename, "lyx");
 246
 247         bool const found = !s.empty();
 248
 249         if (!found)
 250                 s = filename;
 251
 252         // File already open?
 253         if (bufferlist.exists(s)) {
 254                 string const file = MakeDisplayPath(s, 20);
 255                 string text = bformat(_("The document %1$s is already "
 256                                         "loaded.\n\nDo you want to revert "
 257                                         "to the saved version?"), file);
 258                 int const ret = Alert::prompt(_("Revert to saved document?"),
 259                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 260
 261                 if (ret != 0) {
 262                         setBuffer(bufferlist.getBuffer(s));
 263                         return true;
 264                 }
 265                 // FIXME: should be LFUN_REVERT
 266                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 267                         return false;
 268                 // Fall through to new load. (Asger)
 269         }
 270
 271         Buffer * b = 0;
 272
 273         if (found) {
 274                 b = bufferlist.newBuffer(s);
 275                 connectBuffer(*b);
 276                 if (!::loadLyXFile(b, s)) {
 277                         bufferlist.release(b);
 278                         return false;
 279                 }
 280         } else {
 281                 string text = bformat(_("The document %1$s does not yet "
 282                                         "exist.\n\nDo you want to create "
 283                                         "a new document?"), s);
 284                 int const ret = Alert::prompt(_("Create new document?"),
 285                          text, 0, 1, _("&Create"), _("Cancel"));
 286
 287                 if (ret == 0)
 288                         b = ::newFile(s, string(), true);
 289                 else
 290                         return false;
 291         }
 292
 293         setBuffer(b);
 294         bv_->showErrorList(_("Parse"));
 295
 296         if (tolastfiles)
 297                 LyX::ref().lastfiles().newFile(b->fileName());
 298
 299         return true;
 300 }
 301
 302
 303 WorkArea & BufferView::Pimpl::workarea() const
 304 {
 305         return *workarea_.get();
 306 }
 307
 308
 309 LyXScreen & BufferView::Pimpl::screen() const
 310 {
 311         return *screen_.get();
 312 }
 313
 314
 315 Painter & BufferView::Pimpl::painter() const
 316 {
 317         return workarea().getPainter();
 318 }
 319
 320
 321 void BufferView::Pimpl::setBuffer(Buffer * b)
 322 {
 323         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 324                             << "[ b = " << b << "]" << endl;
 325
 326         if (buffer_) {
 327                 disconnectBuffer();
 328                 // Save the actual cursor position and anchor inside the
 329                 // buffer so that it can be restored in case we rechange
 330                 // to this buffer later on.
 331                 buffer_->saveCursor(cursor_.selectionBegin(),
 332                                     cursor_.selectionEnd());
 333         }
 334
 335         // If we are closing current buffer, switch to the first in
 336         // buffer list.
 337         if (!b) {
 338                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 339                                     << " No Buffer!" << endl;
 340                 // We are closing the buffer, use the first buffer as current
 341                 buffer_ = bufferlist.first();
 342                 owner_->getDialogs().hideBufferDependent();
 343         } else {
 344                 // Set current buffer
 345                 buffer_ = b;
 346         }
 347
 348         // Reset old cursor
 349         cursor_ = LCursor(*bv_);
 350         anchor_ref_ = 0;
 351         offset_ref_ = 0;
 352
 353
 354         // If we're quitting lyx, don't bother updating stuff
 355         if (quitting)
 356                 return;
 357
 358         if (buffer_) {
 359                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 360                                     << "Buffer addr: " << buffer_ << endl;
 361                 connectBuffer(*buffer_);
 362                 cursor_.push(buffer_->inset());
 363                 cursor_.resetAnchor();
 364                 buffer_->text().init(bv_);
 365                 buffer_->text().setCurrentFont(cursor_);
 366                 if (buffer_->getCursor().size() > 0 &&
 367                     buffer_->getAnchor().size() > 0)
 368                 {
 369                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 370                         cursor_.resetAnchor();
 371                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 372                         cursor_.setSelection();
 373                 }
 374
 375                 // Buffer-dependent dialogs should be updated or
 376                 // hidden. This should go here because some dialogs (eg ToC)
 377                 // require bv_->text.
 378                 owner_->getDialogs().updateBufferDependent(true);
 379         }
 380
 381         update();
 382         updateScrollbar();
 383         owner_->updateMenubar();
 384         owner_->updateToolbars();
 385         owner_->updateLayoutChoice();
 386         owner_->updateWindowTitle();
 387
 388         // This is done after the layout combox has been populated
 389         if (buffer_) {
 390                 size_t i = cursor_.depth() - 1;
 391                 // we know we'll eventually find a paragraph
 392                 while (true) {
 393                         CursorSlice const & slice = cursor_[i];
 394                         if (!slice.inset().inMathed()) {
 395                                 LyXLayout_ptr const layout = slice.paragraph().layout();
 396                                 owner_->setLayout(layout->name());
 397                                 break;
 398                         }
 399                         BOOST_ASSERT(i>0);
 400                         --i;
 401                 }
 402         }
 403
 404         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 405                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 406 }
 407
 408
 409 void BufferView::Pimpl::resizeCurrentBuffer()
 410 {
 411         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 412         owner_->busy(true);
 413         owner_->message(_("Formatting document..."));
 414
 415         LyXText * text = bv_->text();
 416         if (!text)
 417                 return;
 418
 419         text->init(bv_);
 420         update();
 421
 422         switchKeyMap();
 423         owner_->busy(false);
 424
 425         // Reset the "Formatting..." message
 426         owner_->clearMessage();
 427
 428         updateScrollbar();
 429 }
 430
 431
 432 void BufferView::Pimpl::updateScrollbar()
 433 {
 434         if (!bv_->text()) {
 435                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 436                                      << " no text in updateScrollbar" << endl;
 437                 workarea().setScrollbarParams(0, 0, 0);
 438                 return;
 439         }
 440
 441         LyXText & t = *bv_->text();
 442         int const parsize = int(t.paragraphs().size() - 1);
 443         if (anchor_ref_ >  parsize)  {
 444                 anchor_ref_ = parsize;
 445                 offset_ref_ = 0;
 446         }
 447
 448         lyxerr[Debug::GUI]
 449                 << BOOST_CURRENT_FUNCTION
 450                 << " Updating scrollbar: height: " << t.paragraphs().size()
 451                 << " curr par: " << cursor_.bottom().pit()
 452                 << " default height " << defaultRowHeight() << endl;
 453
 454         // It would be better to fix the scrollbar to understand
 455         // values in [0..1] and divide everything by wh
 456
 457         // estimated average paragraph height:
 458         if (wh_ == 0)
 459                 wh_ = workarea().workHeight() / 4;
 460         int h = t.getPar(anchor_ref_).height();
 461
 462         // Normalize anchor/offset (MV):
 463         while (offset_ref_ > h && anchor_ref_ < parsize) {
 464                 anchor_ref_++;
 465                 offset_ref_ -= h;
 466                 h = t.getPar(anchor_ref_).height();
 467         }
 468         // Look at paragraph heights on-screen
 469         int sumh = 0;
 470         int nh = 0;
 471         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 472                 if (sumh > workarea().workHeight())
 473                         break;
 474                 int const h2 = t.getPar(pit).height();
 475                 sumh += h2;
 476                 nh++;
 477         }
 478         int const hav = sumh / nh;
 479         // More realistic average paragraph height
 480         if (hav > wh_)
 481                 wh_ = hav;
 482
 483         workarea().setScrollbarParams((parsize + 1) * wh_,
 484                 anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h)),
 485                 int(wh_ * defaultRowHeight() / float(h)));
 486 }
 487
 488
 489 void BufferView::Pimpl::scrollDocView(int value)
 490 {
 491         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 492                            << "[ value = " << value << "]" << endl;
 493
 494         if (!buffer_)
 495                 return;
 496
 497         screen().hideCursor();
 498
 499         LyXText & t = *bv_->text();
 500
 501         float const bar = value / float(wh_ * t.paragraphs().size());
 502
 503         anchor_ref_ = int(bar * t.paragraphs().size());
 504         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 505                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 506         t.redoParagraph(anchor_ref_);
 507         int const h = t.getPar(anchor_ref_).height();
 508         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 509         update();
 510
 511         if (!lyxrc.cursor_follows_scrollbar)
 512                 return;
 513
 514         int const height = 2 * defaultRowHeight();
 515         int const first = height;
 516         int const last = workarea().workHeight() - height;
 517         LCursor & cur = cursor_;
 518
 519         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 520
 521         switch (st) {
 522         case bv_funcs::CUR_ABOVE:
 523                 t.setCursorFromCoordinates(cur, 0, first);
 524                 cur.clearSelection();
 525                 break;
 526         case bv_funcs::CUR_BELOW:
 527                 t.setCursorFromCoordinates(cur, 0, last);
 528                 cur.clearSelection();
 529                 break;
 530         case bv_funcs::CUR_INSIDE:
 531                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 532                 int const newy = min(last, max(y, first));
 533                 if (y != newy) {
 534                         cur.reset(buffer_->inset());
 535                         t.setCursorFromCoordinates(cur, 0, newy);
 536                 }
 537         }
 538         owner_->updateLayoutChoice();
 539 }
 540
 541
 542 void BufferView::Pimpl::scroll(int /*lines*/)
 543 {
 544 //      if (!buffer_)
 545 //              return;
 546 //
 547 //      LyXText const * t = bv_->text();
 548 //      int const line_height = defaultRowHeight();
 549 //
 550 //      // The new absolute coordinate
 551 //      int new_top_y = top_y() + lines * line_height;
 552 //
 553 //      // Restrict to a valid value
 554 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 555 //      new_top_y = std::max(0, new_top_y);
 556 //
 557 //      scrollDocView(new_top_y);
 558 //
 559 //      // Update the scrollbar.
 560 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 561 }
 562
 563
 564 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 565                                          key_modifier::state state)
 566 {
 567         owner_->getLyXFunc().processKeySym(key, state);
 568
 569         /* This is perhaps a bit of a hack. When we move
 570          * around, or type, it's nice to be able to see
 571          * the cursor immediately after the keypress. So
 572          * we reset the toggle timeout and force the visibility
 573          * of the cursor. Note we cannot do this inside
 574          * dispatch() itself, because that's called recursively.
 575          */
 576         if (available())
 577                 screen().showCursor(*bv_);
 578 }
 579
 580
 581 void BufferView::Pimpl::selectionRequested()
 582 {
 583         static string sel;
 584
 585         if (!available())
 586                 return;
 587
 588         LCursor & cur = cursor_;
 589
 590         if (!cur.selection()) {
 591                 xsel_cache_.set = false;
 592                 return;
 593         }
 594
 595         if (!xsel_cache_.set ||
 596             cur.top() != xsel_cache_.cursor ||
 597             cur.anchor_.top() != xsel_cache_.anchor)
 598         {
 599                 xsel_cache_.cursor = cur.top();
 600                 xsel_cache_.anchor = cur.anchor_.top();
 601                 xsel_cache_.set = cur.selection();
 602                 sel = cur.selectionAsString(false);
 603                 if (!sel.empty())
 604                         workarea().putClipboard(sel);
 605         }
 606 }
 607
 608
 609 void BufferView::Pimpl::selectionLost()
 610 {
 611         if (available()) {
 612                 screen().hideCursor();
 613                 cursor_.clearSelection();
 614                 xsel_cache_.set = false;
 615         }
 616 }
 617
 618
 619 void BufferView::Pimpl::workAreaResize()
 620 {
 621         static int work_area_width;
 622         static int work_area_height;
 623
 624         bool const widthChange = workarea().workWidth() != work_area_width;
 625         bool const heightChange = workarea().workHeight() != work_area_height;
 626
 627         // Update from work area
 628         work_area_width = workarea().workWidth();
 629         work_area_height = workarea().workHeight();
 630
 631         if (buffer_ && widthChange) {
 632                 // The visible LyXView need a resize
 633                 resizeCurrentBuffer();
 634         }
 635
 636         if (widthChange || heightChange)
 637                 update();
 638
 639         // Always make sure that the scrollbar is sane.
 640         updateScrollbar();
 641         owner_->updateLayoutChoice();
 642 }
 643
 644
 645 bool BufferView::Pimpl::fitCursor()
 646 {
 647         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 648                 LyXFont const font = cursor_.getFont();
 649                 int const asc = font_metrics::maxAscent(font);
 650                 int const des = font_metrics::maxDescent(font);
 651                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 652                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 653                         return false;
 654         }
 655         center();
 656         return true;
 657 }
 658
 659
 660 void BufferView::Pimpl::update(Update::flags flags)
 661 {
 662         lyxerr[Debug::DEBUG]
 663                 << BOOST_CURRENT_FUNCTION
 664                 << "[fitcursor = " << (flags & Update::FitCursor)
 665                 << ", forceupdate = " << (flags & Update::Force)
 666                 << ", singlepar = " << (flags & Update::SinglePar)
 667                 << "]  buffer: " << buffer_ << endl;
 668
 669         // Check needed to survive LyX startup
 670         if (buffer_) {
 671                 // Update macro store
 672                 buffer_->buildMacros();
 673
 674                 CoordCache backup;
 675                 std::swap(theCoords, backup);
 676
 677                 // This, together with doneUpdating(), verifies (using
 678                 // asserts) that screen redraw is not called from
 679                 // within itself.
 680                 theCoords.startUpdating();
 681
 682                 // First drawing step
 683                 ViewMetricsInfo vi = metrics(flags & Update::SinglePar);
 684                 bool forceupdate(flags & Update::Force);
 685
 686                 if ((flags & Update::FitCursor) && fitCursor()) {
 687                         forceupdate = true;
 688                         vi = metrics();
 689                 }
 690                 if (forceupdate) {
 691                         // Second drawing step
 692                         screen().redraw(*bv_, vi);
 693                 } else {
 694                         // Abort updating of the coord
 695                         // cache - just restore the old one
 696                         std::swap(theCoords, backup);
 697                 }
 698         } else
 699                 screen().greyOut();
 700
 701         // And the scrollbar
 702         updateScrollbar();
 703         owner_->view_state_changed();
 704 }
 705
 706
 707 // Callback for cursor timer
 708 void BufferView::Pimpl::cursorToggle()
 709 {
 710         if (buffer_) {
 711                 screen().toggleCursor(*bv_);
 712
 713                 // Use this opportunity to deal with any child processes that
 714                 // have finished but are waiting to communicate this fact
 715                 // to the rest of LyX.
 716                 ForkedcallsController & fcc = ForkedcallsController::get();
 717                 fcc.handleCompletedProcesses();
 718         }
 719
 720         cursor_timeout.restart();
 721 }
 722
 723
 724 bool BufferView::Pimpl::available() const
 725 {
 726         return buffer_ && bv_->text();
 727 }
 728
 729
 730 Change const BufferView::Pimpl::getCurrentChange()
 731 {
 732         if (!buffer_->params().tracking_changes)
 733                 return Change(Change::UNCHANGED);
 734
 735         LyXText * text = bv_->getLyXText();
 736         LCursor & cur = cursor_;
 737
 738         if (!cur.selection())
 739                 return Change(Change::UNCHANGED);
 740
 741         return text->getPar(cur.selBegin().pit()).
 742                         lookupChangeFull(cur.selBegin().pos());
 743 }
 744
 745
 746 void BufferView::Pimpl::savePosition(unsigned int i)
 747 {
 748         if (i >= saved_positions_num)
 749                 return;
 750         BOOST_ASSERT(cursor_.inTexted());
 751         saved_positions[i] = Position(buffer_->fileName(),
 752                                       cursor_.paragraph().id(),
 753                                       cursor_.pos());
 754         if (i > 0)
 755                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 756 }
 757
 758
 759 void BufferView::Pimpl::restorePosition(unsigned int i)
 760 {
 761         if (i >= saved_positions_num)
 762                 return;
 763
 764         string const fname = saved_positions[i].filename;
 765
 766         cursor_.clearSelection();
 767
 768         if (fname != buffer_->fileName()) {
 769                 Buffer * b = 0;
 770                 if (bufferlist.exists(fname))
 771                         b = bufferlist.getBuffer(fname);
 772                 else {
 773                         b = bufferlist.newBuffer(fname);
 774                         // Don't ask, just load it
 775                         ::loadLyXFile(b, fname);
 776                 }
 777                 if (b)
 778                         setBuffer(b);
 779         }
 780
 781         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 782         if (par == buffer_->par_iterator_end())
 783                 return;
 784
 785         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 786
 787         if (i > 0)
 788                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 789 }
 790
 791
 792 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 793 {
 794         return i < saved_positions_num && !saved_positions[i].filename.empty();
 795 }
 796
 797
 798 void BufferView::Pimpl::switchKeyMap()
 799 {
 800         if (!lyxrc.rtl_support)
 801                 return;
 802
 803         Intl & intl = owner_->getIntl();
 804         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 805                 if (intl.keymap == Intl::PRIMARY)
 806                         intl.KeyMapSec();
 807         } else {
 808                 if (intl.keymap == Intl::SECONDARY)
 809                         intl.KeyMapPrim();
 810         }
 811 }
 812
 813
 814 void BufferView::Pimpl::center()
 815 {
 816         CursorSlice & bot = cursor_.bottom();
 817         lyx::pit_type const pit = bot.pit();
 818         bot.text()->redoParagraph(pit);
 819         Paragraph const & par = bot.text()->paragraphs()[pit];
 820         anchor_ref_ = pit;
 821         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 822                 + par.ascent() - workarea().workHeight() / 2;
 823 }
 824
 825
 826 void BufferView::Pimpl::stuffClipboard(string const & content) const
 827 {
 828         workarea().putClipboard(content);
 829 }
 830
 831
 832 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 833 {
 834         string filename = filenm;
 835
 836         if (filename.empty()) {
 837                 // Launch a file browser
 838                 string initpath = lyxrc.document_path;
 839
 840                 if (available()) {
 841                         string const trypath = owner_->buffer()->filePath();
 842                         // If directory is writeable, use this as default.
 843                         if (IsDirWriteable(trypath))
 844                                 initpath = trypath;
 845                 }
 846
 847                 FileDialog fileDlg(_("Select LyX document to insert"),
 848                         LFUN_FILE_INSERT,
 849                         make_pair(string(_("Documents|#o#O")),
 850                                   string(lyxrc.document_path)),
 851                         make_pair(string(_("Examples|#E#e")),
 852                                   string(AddPath(package().system_support(), "examples"))));
 853
 854                 FileDialog::Result result =
 855                         fileDlg.open(initpath,
 856                                      FileFilterList(_("LyX Documents (*.lyx)")),
 857                                      string());
 858
 859                 if (result.first == FileDialog::Later)
 860                         return;
 861
 862                 filename = result.second;
 863
 864                 // check selected filename
 865                 if (filename.empty()) {
 866                         owner_->message(_("Canceled."));
 867                         return;
 868                 }
 869         }
 870
 871         // Get absolute path of file and add ".lyx"
 872         // to the filename if necessary
 873         filename = FileSearch(string(), filename, "lyx");
 874
 875         string const disp_fn = MakeDisplayPath(filename);
 876         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 877
 878         cursor_.clearSelection();
 879         bv_->getLyXText()->breakParagraph(cursor_);
 880
 881         BOOST_ASSERT(cursor_.inTexted());
 882
 883         string const fname = MakeAbsPath(filename);
 884         bool const res = buffer_->readFile(fname, cursor_.pit());
 885         resizeCurrentBuffer();
 886
 887         string s = res ? _("Document %1$s inserted.")
 888                        : _("Could not insert document %1$s");
 889         owner_->message(bformat(s, disp_fn));
 890 }
 891
 892
 893 void BufferView::Pimpl::trackChanges()
 894 {
 895         bool const tracking = buffer_->params().tracking_changes;
 896
 897         if (!tracking) {
 898                 for_each(buffer_->par_iterator_begin(),
 899                          buffer_->par_iterator_end(),
 900                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 901                 buffer_->params().tracking_changes = true;
 902
 903                 // We cannot allow undos beyond the freeze point
 904                 buffer_->undostack().clear();
 905         } else {
 906                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
 907                 bool const found = lyx::find::findNextChange(bv_);
 908                 if (found) {
 909                         // We reset the cursor to the start of the
 910                         // document, since the Changes Dialog is going
 911                         // to search for the next change anyway.
 912                         cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
 913                         owner_->getDialogs().show("changes");
 914                         return;
 915                 }
 916
 917                 for_each(buffer_->par_iterator_begin(),
 918                          buffer_->par_iterator_end(),
 919                          mem_fun_ref(&Paragraph::untrackChanges));
 920
 921                 buffer_->params().tracking_changes = false;
 922         }
 923
 924         buffer_->redostack().clear();
 925 }
 926
 927
 928 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 929 {
 930         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
 931
 932         // This is only called for mouse related events including
 933         // LFUN_FILE_OPEN generated by drag-and-drop.
 934         FuncRequest cmd = cmd0;
 935
 936         // Handle drag&drop
 937         if (cmd.action == LFUN_FILE_OPEN) {
 938                 owner_->dispatch(cmd);
 939                 return true;
 940         }
 941
 942         if (!buffer_)
 943                 return false;
 944
 945         LCursor cur(*bv_);
 946         cur.push(buffer_->inset());
 947         cur.selection() = cursor_.selection();
 948
 949         // Doesn't go through lyxfunc, so we need to update
 950         // the layout choice etc. ourselves
 951
 952         // E.g. Qt mouse press when no buffer
 953         if (!available())
 954                 return false;
 955
 956         screen().hideCursor();
 957
 958         // Either the inset under the cursor or the
 959         // surrounding LyXText will handle this event.
 960
 961         // Build temporary cursor.
 962         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 963         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 964         //lyxerr << BOOST_CURRENT_FUNCTION
 965         //       << " * hit inset at tip: " << inset << endl;
 966         //lyxerr << BOOST_CURRENT_FUNCTION
 967         //       << " * created temp cursor:" << cur << endl;
 968
 969         // Put anchor at the same position.
 970         cur.resetAnchor();
 971
 972         // Try to dispatch to an non-editable inset near this position
 973         // via the temp cursor. If the inset wishes to change the real
 974         // cursor it has to do so explicitly by using
 975         //  cur.bv().cursor() = cur;  (or similar)
 976         if (inset)
 977                 inset->dispatch(cur, cmd);
 978
 979         // Now dispatch to the temporary cursor. If the real cursor should
 980         // be modified, the inset's dispatch has to do so explicitly.
 981         if (!cur.result().dispatched())
 982                 cur.dispatch(cmd);
 983
 984         if (cur.result().dispatched()) {
 985                 // Redraw if requested or necessary.
 986                 if (cur.result().update())
 987                         update(Update::FitCursor | Update::Force);
 988                 else
 989                         update();
 990         }
 991
 992         // See workAreaKeyPress
 993         cursor_timeout.restart();
 994         screen().showCursor(*bv_);
 995
 996         // Skip these when selecting
 997         if (cmd.action != LFUN_MOUSE_MOTION) {
 998                 owner_->updateLayoutChoice();
 999                 owner_->updateToolbars();
1000         }
1001
1002         // Slight hack: this is only called currently when we
1003         // clicked somewhere, so we force through the display
1004         // of the new status here.
1005         owner_->clearMessage();
1006         return true;
1007 }
1008
1009
1010 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
1011 {
1012         FuncStatus flag;
1013
1014         switch (cmd.action) {
1015
1016         case LFUN_UNDO:
1017                 flag.enabled(!buffer_->undostack().empty());
1018                 break;
1019         case LFUN_REDO:
1020                 flag.enabled(!buffer_->redostack().empty());
1021                 break;
1022         case LFUN_FILE_INSERT:
1023         case LFUN_FILE_INSERT_ASCII_PARA:
1024         case LFUN_FILE_INSERT_ASCII:
1025         case LFUN_FONT_STATE:
1026         case LFUN_INSERT_LABEL:
1027         case LFUN_BOOKMARK_SAVE:
1028         case LFUN_GOTO_PARAGRAPH:
1029         case LFUN_GOTOERROR:
1030         case LFUN_GOTONOTE:
1031         case LFUN_REFERENCE_GOTO:
1032         case LFUN_WORD_FIND:
1033         case LFUN_WORD_REPLACE:
1034         case LFUN_MARK_OFF:
1035         case LFUN_MARK_ON:
1036         case LFUN_SETMARK:
1037         case LFUN_CENTER:
1038         case LFUN_BIBDB_ADD:
1039         case LFUN_BIBDB_DEL:
1040         case LFUN_WORDS_COUNT:
1041                 flag.enabled(true);
1042                 break;
1043
1044         case LFUN_LABEL_GOTO: {
1045                 flag.enabled(!cmd.argument.empty()
1046                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
1047                 break;
1048         }
1049
1050         case LFUN_BOOKMARK_GOTO:
1051                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
1052                 break;
1053         case LFUN_TRACK_CHANGES:
1054                 flag.enabled(true);
1055                 flag.setOnOff(buffer_->params().tracking_changes);
1056                 break;
1057
1058         case LFUN_OUTPUT_CHANGES: {
1059                 LaTeXFeatures features(*buffer_, buffer_->params(), false);
1060                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1061                         && features.isAvailable("dvipost"));
1062                 flag.setOnOff(buffer_->params().output_changes);
1063                 break;
1064         }
1065
1066         case LFUN_MERGE_CHANGES:
1067         case LFUN_ACCEPT_CHANGE: // what about these two
1068         case LFUN_REJECT_CHANGE: // what about these two
1069         case LFUN_ACCEPT_ALL_CHANGES:
1070         case LFUN_REJECT_ALL_CHANGES:
1071                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1072                 break;
1073         default:
1074                 flag.enabled(false);
1075         }
1076
1077         return flag;
1078 }
1079
1080
1081
1082 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1083 {
1084         //lyxerr << BOOST_CURRENT_FUNCTION
1085         //       << [ cmd = " << cmd << "]" << endl;
1086
1087         // Make sure that the cached BufferView is correct.
1088         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1089                 << " action[" << cmd.action << ']'
1090                 << " arg[" << cmd.argument << ']'
1091                 << " x[" << cmd.x << ']'
1092                 << " y[" << cmd.y << ']'
1093                 << " button[" << cmd.button() << ']'
1094                 << endl;
1095
1096         LCursor & cur = cursor_;
1097
1098         switch (cmd.action) {
1099
1100         case LFUN_UNDO:
1101                 if (available()) {
1102                         cur.message(_("Undo"));
1103                         cur.clearSelection();
1104                         if (!textUndo(*bv_))
1105                                 cur.message(_("No further undo information"));
1106                         update();
1107                         switchKeyMap();
1108                 }
1109                 break;
1110
1111         case LFUN_REDO:
1112                 if (available()) {
1113                         cur.message(_("Redo"));
1114                         cur.clearSelection();
1115                         if (!textRedo(*bv_))
1116                                 cur.message(_("No further redo information"));
1117                         update();
1118                         switchKeyMap();
1119                 }
1120                 break;
1121
1122         case LFUN_FILE_INSERT:
1123                 MenuInsertLyXFile(cmd.argument);
1124                 break;
1125
1126         case LFUN_FILE_INSERT_ASCII_PARA:
1127                 InsertAsciiFile(bv_, cmd.argument, true);
1128                 break;
1129
1130         case LFUN_FILE_INSERT_ASCII:
1131                 InsertAsciiFile(bv_, cmd.argument, false);
1132                 break;
1133
1134         case LFUN_FONT_STATE:
1135                 cur.message(cur.currentState());
1136                 break;
1137
1138         case LFUN_BOOKMARK_SAVE:
1139                 savePosition(convert<unsigned int>(cmd.argument));
1140                 break;
1141
1142         case LFUN_BOOKMARK_GOTO:
1143                 restorePosition(convert<unsigned int>(cmd.argument));
1144                 break;
1145
1146         case LFUN_LABEL_GOTO: {
1147                 string label = cmd.argument;
1148                 if (label.empty()) {
1149                         InsetRef * inset =
1150                                 getInsetByCode<InsetRef>(cursor_,
1151                                                          InsetBase::REF_CODE);
1152                         if (inset) {
1153                                 label = inset->getContents();
1154                                 savePosition(0);
1155                         }
1156                 }
1157
1158                 if (!label.empty())
1159                         bv_->gotoLabel(label);
1160                 break;
1161         }
1162
1163         case LFUN_GOTO_PARAGRAPH: {
1164                 int const id = convert<int>(cmd.argument);
1165                 ParIterator par = buffer_->getParFromID(id);
1166                 if (par == buffer_->par_iterator_end()) {
1167                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1168                                             << id << ']' << endl;
1169                         break;
1170                 } else {
1171                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1172                                             << " found." << endl;
1173                 }
1174
1175                 // Set the cursor
1176                 bv_->setCursor(makeDocIterator(par, 0));
1177
1178                 update();
1179                 switchKeyMap();
1180                 break;
1181         }
1182
1183         case LFUN_GOTOERROR:
1184                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1185                 break;
1186
1187         case LFUN_GOTONOTE:
1188                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1189                 break;
1190
1191         case LFUN_REFERENCE_GOTO: {
1192                 vector<InsetBase_code> tmp;
1193                 tmp.push_back(InsetBase::LABEL_CODE);
1194                 tmp.push_back(InsetBase::REF_CODE);
1195                 bv_funcs::gotoInset(bv_, tmp, true);
1196                 break;
1197         }
1198
1199         case LFUN_TRACK_CHANGES:
1200                 trackChanges();
1201                 break;
1202
1203         case LFUN_OUTPUT_CHANGES: {
1204                 bool const state = buffer_->params().output_changes;
1205                 buffer_->params().output_changes = !state;
1206                 break;
1207         }
1208
1209         case LFUN_MERGE_CHANGES:
1210                 owner_->getDialogs().show("changes");
1211                 break;
1212
1213         case LFUN_ACCEPT_ALL_CHANGES: {
1214                 cursor_.reset(buffer_->inset());
1215 #ifdef WITH_WARNINGS
1216 #warning FIXME changes
1217 #endif
1218                 while (lyx::find::findNextChange(bv_))
1219                         bv_->getLyXText()->acceptChange(cursor_);
1220                 update();
1221                 break;
1222         }
1223
1224         case LFUN_REJECT_ALL_CHANGES: {
1225                 cursor_.reset(buffer_->inset());
1226 #ifdef WITH_WARNINGS
1227 #warning FIXME changes
1228 #endif
1229                 while (lyx::find::findNextChange(bv_))
1230                         bv_->getLyXText()->rejectChange(cursor_);
1231                 break;
1232         }
1233
1234         case LFUN_WORD_FIND:
1235                 lyx::find::find(bv_, cmd);
1236                 break;
1237
1238         case LFUN_WORD_REPLACE:
1239                 lyx::find::replace(bv_, cmd);
1240                 break;
1241
1242         case LFUN_MARK_OFF:
1243                 cur.clearSelection();
1244                 cur.resetAnchor();
1245                 cur.message(N_("Mark off"));
1246                 break;
1247
1248         case LFUN_MARK_ON:
1249                 cur.clearSelection();
1250                 cur.mark() = true;
1251                 cur.resetAnchor();
1252                 cur.message(N_("Mark on"));
1253                 break;
1254
1255         case LFUN_SETMARK:
1256                 cur.clearSelection();
1257                 if (cur.mark()) {
1258                         cur.mark() = false;
1259                         cur.message(N_("Mark removed"));
1260                 } else {
1261                         cur.mark() = true;
1262                         cur.message(N_("Mark set"));
1263                 }
1264                 cur.resetAnchor();
1265                 break;
1266
1267         case LFUN_CENTER:
1268                 center();
1269                 break;
1270
1271         case LFUN_BIBDB_ADD: {
1272                 LCursor tmpcur = cursor_;
1273                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1274                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1275                                                 InsetBase::BIBTEX_CODE);
1276                 if (inset)
1277                         inset->addDatabase(cmd.argument);
1278                 break;
1279         }
1280
1281         case LFUN_BIBDB_DEL: {
1282                 LCursor tmpcur = cursor_;
1283                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1284                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1285                                                 InsetBase::BIBTEX_CODE);
1286                 if (inset)
1287                         inset->delDatabase(cmd.argument);
1288                 break;
1289         }
1290
1291         case LFUN_WORDS_COUNT: {
1292                 DocIterator from, to;
1293                 if (cur.selection()) {
1294                         from = cur.selectionBegin();
1295                         to = cur.selectionEnd();
1296                 } else {
1297                         from = doc_iterator_begin(buffer_->inset());
1298                         to = doc_iterator_end(buffer_->inset());
1299                 }
1300                 int const count = countWords(from, to);
1301                 string message;
1302                 if (count != 1) {
1303                         if (cur.selection())
1304                                 message = bformat(_("%1$d words in selection."),
1305                                           count);
1306                                 else
1307                                         message = bformat(_("%1$d words in document."),
1308                                                           count);
1309                 }
1310                 else {
1311                         if (cur.selection())
1312                                 message = _("One word in selection.");
1313                         else
1314                                 message = _("One word in document.");
1315                 }
1316
1317                 Alert::information(_("Count words"), message);
1318         }
1319                 break;
1320         default:
1321                 return false;
1322         }
1323
1324         return true;
1325 }
1326
1327
1328 ViewMetricsInfo BufferView::Pimpl::metrics(bool singlepar)
1329 {
1330         // Remove old position cache
1331         theCoords.clear();
1332         BufferView & bv = *bv_;
1333         LyXText * const text = bv.text();
1334         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1335                 anchor_ref_ = int(text->paragraphs().size() - 1);
1336                 offset_ref_ = 0;
1337         }
1338
1339         lyx::pit_type const pit = anchor_ref_;
1340         int pit1 = pit;
1341         int pit2 = pit;
1342         size_t const npit = text->paragraphs().size();
1343
1344         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1345         // the (main text, not inset!) paragraph containing the cursor.
1346         // (if this paragraph contains insets etc., rebreaking will
1347         // recursively descend)
1348         if (!singlepar || pit == cursor_.bottom().pit())
1349                 text->redoParagraph(pit);
1350         int y0 = text->getPar(pit).ascent() - offset_ref_;
1351
1352         // Redo paragraphs above anchor if necessary; again, in Single Par
1353         // mode, only if we encounter the (main text) one having the cursor.
1354         int y1 = y0;
1355         while (y1 > 0 && pit1 > 0) {
1356                 y1 -= text->getPar(pit1).ascent();
1357                 --pit1;
1358                 if (!singlepar || pit1 == cursor_.bottom().pit())
1359                         text->redoParagraph(pit1);
1360                 y1 -= text->getPar(pit1).descent();
1361         }
1362
1363
1364         // Take care of ascent of first line
1365         y1 -= text->getPar(pit1).ascent();
1366
1367         // Normalize anchor for next time
1368         anchor_ref_ = pit1;
1369         offset_ref_ = -y1;
1370
1371         // Grey at the beginning is ugly
1372         if (pit1 == 0 && y1 > 0) {
1373                 y0 -= y1;
1374                 y1 = 0;
1375                 anchor_ref_ = 0;
1376         }
1377
1378         // Redo paragraphs below the anchor if necessary. Single par mode:
1379         // only the one containing the cursor if encountered.
1380         int y2 = y0;
1381         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1382                 y2 += text->getPar(pit2).descent();
1383                 ++pit2;
1384                 if (!singlepar || pit2 == cursor_.bottom().pit())
1385                         text->redoParagraph(pit2);
1386                 y2 += text->getPar(pit2).ascent();
1387         }
1388
1389         // Take care of descent of last line
1390         y2 += text->getPar(pit2).descent();
1391
1392         // The coordinates of all these paragraphs are correct, cache them
1393         int y = y1;
1394         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1395                 y += text->getPar(pit).ascent();
1396                 theCoords.parPos()[text][pit] = Point(0, y);
1397                 if (singlepar && pit == cursor_.bottom().pit()) {
1398                         // In Single Paragraph mode, collect here the
1399                         // y1 and y2 of the (one) paragraph the cursor is in
1400                         y1 = y - text->getPar(pit).ascent();
1401                         y2 = y + text->getPar(pit).descent();
1402                 }
1403                 y += text->getPar(pit).descent();
1404         }
1405
1406         if (singlepar) {
1407                 // collect cursor paragraph iter bounds
1408                 pit1 = cursor_.bottom().pit();
1409                 pit2 = cursor_.bottom().pit();
1410         }
1411
1412         lyxerr[Debug::DEBUG]
1413                 << BOOST_CURRENT_FUNCTION
1414                 << " y1: " << y1
1415                 << " y2: " << y2
1416                 << " pit1: " << pit1
1417                 << " pit2: " << pit2
1418                 << " npit: " << npit
1419                 << " singlepar: " << singlepar
1420                 << endl;
1421
1422         return ViewMetricsInfo(pit1, pit2, y1, y2, singlepar);
1423 }