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