src/frontends/qt4/GuiApplication.cpp

   1 /**
   2  * \file GuiApplication.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiApplication.h"
  16
  17 #include "qt_helpers.h"
  18 #include "GuiImage.h"
  19 #include "GuiKeySymbol.h"
  20 #include "GuiView.h"
  21
  22 #include "frontends/alert.h"
  23 #include "frontends/Application.h"
  24 #include "frontends/FontLoader.h"
  25 #include "frontends/FontMetrics.h"
  26
  27 #include "Buffer.h"
  28 #include "BufferList.h"
  29 #include "BufferView.h"
  30 #include "Font.h"
  31 #include "FuncRequest.h"
  32 #include "FuncStatus.h"
  33 #include "LyX.h"
  34 #include "LyXFunc.h"
  35 #include "LyXRC.h"
  36 #include "Session.h"
  37 #include "version.h"
  38
  39 #include "support/debug.h"
  40 #include "support/ExceptionMessage.h"
  41 #include "support/FileName.h"
  42 #include "support/ForkedCalls.h"
  43 #include "support/gettext.h"
  44 #include "support/lstrings.h"
  45 #include "support/os.h"
  46 #include "support/Package.h"
  47
  48 #include <QApplication>
  49 #include <QClipboard>
  50 #include <QEventLoop>
  51 #include <QFileOpenEvent>
  52 #include <QLocale>
  53 #include <QLibraryInfo>
  54 #include <QMenuBar>
  55 #include <QPixmapCache>
  56 #include <QRegExp>
  57 #include <QSessionManager>
  58 #include <QSocketNotifier>
  59 #include <QTextCodec>
  60 #include <QTimer>
  61 #include <QTranslator>
  62 #include <QWidget>
  63
  64 #ifdef Q_WS_X11
  65 #include <X11/Xatom.h>
  66 #include <X11/Xlib.h>
  67 #undef CursorShape
  68 #undef None
  69 #endif
  70
  71 #include <boost/bind.hpp>
  72
  73 #include <exception>
  74
  75 using namespace std;
  76 using namespace lyx::support;
  77
  78 namespace lyx {
  79
  80 frontend::Application * createApplication(int & argc, char * argv[])
  81 {
  82         return new frontend::GuiApplication(argc, argv);
  83 }
  84
  85
  86 namespace frontend {
  87
  88 class SocketNotifier : public QSocketNotifier
  89 {
  90 public:
  91         /// connect a connection notification from the LyXServerSocket
  92         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
  93                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
  94         {}
  95
  96 public:
  97         /// The callback function
  98         Application::SocketCallback func_;
  99 };
 100
 101
 102 ////////////////////////////////////////////////////////////////////////
 103 // Mac specific stuff goes here...
 104
 105 class MenuTranslator : public QTranslator
 106 {
 107 public:
 108         MenuTranslator(QObject * parent)
 109                 : QTranslator(parent)
 110         {}
 111
 112         QString translate(const char * /*context*/,
 113           const char * sourceText,
 114           const char * /*comment*/ = 0)
 115         {
 116                 string const s = sourceText;
 117                 if (s == N_("About %1") || s == N_("Preferences")
 118                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 119                         return qt_(s);
 120                 else
 121                         return QString();
 122         }
 123 };
 124
 125 class GlobalMenuBar : public QMenuBar
 126 {
 127 public:
 128         ///
 129         GlobalMenuBar() : QMenuBar(0) {}
 130
 131         ///
 132         bool event(QEvent * e)
 133         {
 134                 if (e->type() == QEvent::ShortcutOverride) {
 135                         //          && activeWindow() == 0) {
 136                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 137                         KeySymbol sym;
 138                         setKeySymbol(&sym, ke);
 139                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 140                         e->accept();
 141                         return true;
 142                 }
 143                 return false;
 144         }
 145 };
 146
 147 ///////////////////////////////////////////////////////////////
 148 // You can find more platform specific stuff
 149 // at the end of this file...
 150 ///////////////////////////////////////////////////////////////
 151
 152
 153 GuiApplication * guiApp;
 154
 155
 156 GuiApplication::GuiApplication(int & argc, char ** argv)
 157         : QApplication(argc, argv), Application(), current_view_(0), global_menubar_(0)
 158 {
 159         QString app_name = "LyX";
 160         QCoreApplication::setOrganizationName(app_name);
 161         QCoreApplication::setOrganizationDomain("lyx.org");
 162         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 163
 164         //FIXME: quitOnLastWindowClosed is true by default, at least on Windows and
 165         // X11 platforms. We should have a lyxrc setting for this in order to let the
 166         // application stay resident.
 167         /*
 168         if (lyxrc.quit_on_last_window_closed)
 169                 setQuitOnLastWindowClosed(false);
 170         */
 171 #ifdef Q_WS_MAC
 172         setQuitOnLastWindowClosed(false);
 173 #endif
 174
 175 #ifdef Q_WS_X11
 176         // doubleClickInterval() is 400 ms on X11 which is just too long.
 177         // On Windows and Mac OS X, the operating system's value is used.
 178         // On Microsoft Windows, calling this function sets the double
 179         // click interval for all applications. So we don't!
 180         QApplication::setDoubleClickInterval(300);
 181 #endif
 182
 183         // install translation file for Qt built-in dialogs
 184         QString language_name = QString("qt_") + QLocale::system().name();
 185
 186         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 187         // Short-named translator can be loaded from a long name, but not the
 188         // opposite. Therefore, long name should be used without truncation.
 189         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 190         if (qt_trans_.load(language_name,
 191                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 192         {
 193                 installTranslator(&qt_trans_);
 194                 // even if the language calls for RtL, don't do that
 195                 setLayoutDirection(Qt::LeftToRight);
 196                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 197                         << fromqstr(language_name));
 198         } else
 199                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 200                         << fromqstr(language_name));
 201
 202 #ifdef Q_WS_MACX
 203         // This allows to translate the strings that appear in the LyX menu.
 204         addMenuTranslator();
 205 #endif
 206         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 207
 208         using namespace lyx::graphics;
 209
 210         Image::newImage = boost::bind(&GuiImage::newImage);
 211         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 212
 213         // needs to be done before reading lyxrc
 214         QWidget w;
 215         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 216
 217         guiApp = this;
 218
 219         // Set the cache to 5120 kilobytes which corresponds to screen size of
 220         // 1280 by 1024 pixels with a color depth of 32 bits.
 221         QPixmapCache::setCacheLimit(5120);
 222
 223         // Initialize RC Fonts
 224         if (lyxrc.roman_font_name.empty())
 225                 lyxrc.roman_font_name = fromqstr(romanFontName());
 226
 227         if (lyxrc.sans_font_name.empty())
 228                 lyxrc.sans_font_name = fromqstr(sansFontName());
 229
 230         if (lyxrc.typewriter_font_name.empty())
 231                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 232
 233         general_timer_.setInterval(500);
 234         connect(&general_timer_, SIGNAL(timeout()),
 235                 this, SLOT(handleRegularEvents()));
 236         general_timer_.start();
 237
 238 #ifdef Q_WS_MACX
 239         if (global_menubar_ == 0) {
 240                 // Create the global default menubar which is shown for the dialogs
 241                 // and if no GuiView is visible.
 242                 global_menubar_ = new GlobalMenuBar();
 243         }
 244 #endif
 245 }
 246
 247
 248 GuiApplication::~GuiApplication()
 249 {
 250         socket_notifiers_.clear();
 251 }
 252
 253
 254 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
 255 {
 256         FuncStatus flag;
 257         bool enable = true;
 258
 259         switch(cmd.action) {
 260
 261         case LFUN_WINDOW_CLOSE:
 262                 enable = view_ids_.size() > 0;
 263                 break;
 264
 265         default:
 266                 if (!current_view_) {
 267                         enable = false;
 268                         break;
 269                 }
 270         }
 271
 272         if (!enable)
 273                 flag.enabled(false);
 274
 275         return flag;
 276 }
 277
 278
 279 bool GuiApplication::dispatch(FuncRequest const & cmd)
 280 {
 281         switch(cmd.action) {
 282
 283         case LFUN_WINDOW_NEW:
 284                 createView(toqstr(cmd.argument()));
 285                 break;
 286
 287         case LFUN_WINDOW_CLOSE:
 288                 // update bookmark pit of the current buffer before window close
 289                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 290                         theLyXFunc().gotoBookmark(i+1, false, false);
 291                 current_view_->close();
 292                 break;
 293
 294         case LFUN_LYX_QUIT:
 295                 // quitting is triggered by the gui code
 296                 // (leaving the event loop).
 297                 current_view_->message(from_utf8(N_("Exiting.")));
 298                 if (closeAllViews())
 299                         quit();
 300                 break;
 301
 302         case LFUN_SCREEN_FONT_UPDATE: {
 303                 // handle the screen font changes.
 304                 font_loader_.update();
 305                 // Backup current_view_
 306                 GuiView * view = current_view_;
 307                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 308                 // to skip the refresh.
 309                 current_view_ = 0;
 310                 BufferList::iterator it = theBufferList().begin();
 311                 BufferList::iterator const end = theBufferList().end();
 312                 for (; it != end; ++it)
 313                         (*it)->changed();
 314                 // Restore current_view_
 315                 current_view_ = view;
 316                 break;
 317         }
 318
 319         case LFUN_BUFFER_NEW:
 320                 if (viewCount() == 0
 321                     || (!lyxrc.single_window && current_view_->buffer() != 0))
 322                         createView();
 323                 current_view_->newDocument(to_utf8(cmd.argument()), false);
 324                 break;
 325
 326         case LFUN_BUFFER_NEW_TEMPLATE:
 327                 if (viewCount() == 0
 328                     || (!lyxrc.single_window && current_view_->buffer() != 0)) {
 329                         createView();
 330                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 331                         if (!current_view_->buffer())
 332                                 current_view_->close();
 333                 } else
 334                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 335                 break;
 336
 337         case LFUN_FILE_OPEN:
 338                 if (viewCount() == 0
 339                     || (!lyxrc.single_window && current_view_->buffer() != 0)) {
 340                         createView();
 341                         current_view_->openDocument(to_utf8(cmd.argument()));
 342                         if (!current_view_->buffer())
 343                                 current_view_->close();
 344                 } else
 345                         current_view_->openDocument(to_utf8(cmd.argument()));
 346                 break;
 347
 348         default:
 349                 // Notify the caller that the action has not been dispatched.
 350                 return false;
 351         }
 352
 353         // The action has been dispatched.
 354         return true;
 355 }
 356
 357
 358 void GuiApplication::resetGui()
 359 {
 360         map<int, GuiView *>::iterator it;
 361         for (it = views_.begin(); it != views_.end(); ++it)
 362                 it->second->resetDialogs();
 363
 364         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 365 }
 366
 367
 368 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 369 {
 370         ids.clear();
 371         map<int, GuiView *>::const_iterator it;
 372         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 373                 ids.push_back(it->first);
 374 }
 375
 376
 377 void GuiApplication::createView(QString const & geometry_arg)
 378 {
 379         // create new view
 380         updateIds(views_, view_ids_);
 381         int id = 0;
 382         while (views_.find(id) != views_.end())
 383                 id++;
 384         GuiView * view = new GuiView(id);
 385
 386         // copy the icon size from old view
 387         if (viewCount() > 0)
 388                 view->setIconSize(current_view_->iconSize());
 389
 390         // register view
 391         views_[id] = view;
 392         updateIds(views_, view_ids_);
 393
 394         theLyXFunc().setLyXView(view);
 395         view->show();
 396         if (!geometry_arg.isEmpty()) {
 397 #ifdef Q_WS_WIN
 398                 int x, y;
 399                 int w, h;
 400                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 401                 re.indexIn(geometry_arg);
 402                 w = re.cap(1).toInt();
 403                 h = re.cap(2).toInt();
 404                 x = re.cap(3).toInt();
 405                 y = re.cap(4).toInt();
 406                 view->setGeometry(x, y, w, h);
 407 #endif
 408         }
 409         view->setFocus();
 410         setActiveWindow(view);
 411         setCurrentView(*view);
 412 }
 413
 414
 415
 416
 417 Clipboard & GuiApplication::clipboard()
 418 {
 419         return clipboard_;
 420 }
 421
 422
 423 Selection & GuiApplication::selection()
 424 {
 425         return selection_;
 426 }
 427
 428
 429 int GuiApplication::exec()
 430 {
 431         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 432         return QApplication::exec();
 433 }
 434
 435
 436 void GuiApplication::exit(int status)
 437 {
 438         QApplication::exit(status);
 439 }
 440
 441
 442 void GuiApplication::execBatchCommands()
 443 {
 444         LyX::ref().execBatchCommands();
 445 }
 446
 447
 448 void GuiApplication::restoreGuiSession()
 449 {
 450         if (!lyxrc.load_session)
 451                 return;
 452
 453         Session & session = LyX::ref().session();
 454         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 455         // do not add to the lastfile list since these files are restored from
 456         // last session, and should be already there (regular files), or should
 457         // not be added at all (help files).
 458         for_each(lastopened.begin(), lastopened.end(),
 459                 bind(&GuiView::loadDocument, current_view_, _1, false));
 460
 461         // clear this list to save a few bytes of RAM
 462         session.lastOpened().clear();
 463 }
 464
 465
 466 QString const GuiApplication::romanFontName()
 467 {
 468         QFont font;
 469         font.setKerning(false);
 470         font.setStyleHint(QFont::Serif);
 471         font.setFamily("serif");
 472
 473         return QFontInfo(font).family();
 474 }
 475
 476
 477 QString const GuiApplication::sansFontName()
 478 {
 479         QFont font;
 480         font.setKerning(false);
 481         font.setStyleHint(QFont::SansSerif);
 482         font.setFamily("sans");
 483
 484         return QFontInfo(font).family();
 485 }
 486
 487
 488 QString const GuiApplication::typewriterFontName()
 489 {
 490         QFont font;
 491         font.setKerning(false);
 492         font.setStyleHint(QFont::TypeWriter);
 493         font.setFamily("monospace");
 494
 495         return QFontInfo(font).family();
 496 }
 497
 498
 499 void GuiApplication::handleRegularEvents()
 500 {
 501         ForkedCallsController::handleCompletedProcesses();
 502 }
 503
 504
 505 bool GuiApplication::event(QEvent * e)
 506 {
 507         switch(e->type()) {
 508         case QEvent::FileOpen: {
 509                 // Open a file; this happens only on Mac OS X for now
 510                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 511
 512                 if (!current_view_ || !current_view_->view())
 513                         // The application is not properly initialized yet.
 514                         // So we acknowledge the event and delay the file opening
 515                         // until LyX is ready.
 516                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 517                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 518                 else
 519                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 520                                 qstring_to_ucs4(foe->file())));
 521
 522                 e->accept();
 523                 return true;
 524         }
 525         default:
 526                 return QApplication::event(e);
 527         }
 528 }
 529
 530
 531 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 532 {
 533         try {
 534                 return QApplication::notify(receiver, event);
 535         }
 536         catch (ExceptionMessage const & e) {
 537                 switch(e.type_) {
 538                 case ErrorException:
 539                         LyX::cref().emergencyCleanup();
 540                         setQuitOnLastWindowClosed(false);
 541                         closeAllViews();
 542                         Alert::error(e.title_, e.details_);
 543 #ifndef NDEBUG
 544                         // Properly crash in debug mode in order to get a useful backtrace.
 545                         abort();
 546 #endif
 547                         // In release mode, try to exit gracefully.
 548                         this->exit(1);
 549
 550                 case BufferException: {
 551                         Buffer * buf = current_view_->buffer();
 552                         docstring details = e.details_ + '\n';
 553                         details += theBufferList().emergencyWrite(buf);
 554                         theBufferList().release(buf);
 555                         details += _("\nThe current document was closed.");
 556                         Alert::error(e.title_, details);
 557                         return false;
 558                 }
 559                 case WarningException:
 560                         Alert::warning(e.title_, e.details_);
 561                         return false;
 562                 };
 563         }
 564         catch (exception const & e) {
 565                 docstring s = _("LyX has caught an exception, it will now "
 566                         "attempt to save all unsaved documents and exit."
 567                         "\n\nException: ");
 568                 s += from_ascii(e.what());
 569                 Alert::error(_("Software exception Detected"), s);
 570                 LyX::cref().exit(1);
 571         }
 572         catch (...) {
 573                 docstring s = _("LyX has caught some really weird exception, it will "
 574                         "now attempt to save all unsaved documents and exit.");
 575                 Alert::error(_("Software exception Detected"), s);
 576                 LyX::cref().exit(1);
 577         }
 578
 579         return false;
 580 }
 581
 582
 583 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 584 {
 585         QColor const & qcol = color_cache_.get(col);
 586         if (!qcol.isValid()) {
 587                 rgbcol.r = 0;
 588                 rgbcol.g = 0;
 589                 rgbcol.b = 0;
 590                 return false;
 591         }
 592         rgbcol.r = qcol.red();
 593         rgbcol.g = qcol.green();
 594         rgbcol.b = qcol.blue();
 595         return true;
 596 }
 597
 598
 599 string const GuiApplication::hexName(ColorCode col)
 600 {
 601         return ltrim(fromqstr(color_cache_.get(col).name()), "#");
 602 }
 603
 604
 605 void GuiApplication::updateColor(ColorCode)
 606 {
 607         // FIXME: Bleh, can't we just clear them all at once ?
 608         color_cache_.clear();
 609 }
 610
 611
 612 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 613 {
 614         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 615         socket_notifiers_[fd] = sn;
 616         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 617 }
 618
 619
 620 void GuiApplication::socketDataReceived(int fd)
 621 {
 622         socket_notifiers_[fd]->func_();
 623 }
 624
 625
 626 void GuiApplication::unregisterSocketCallback(int fd)
 627 {
 628         socket_notifiers_.erase(fd);
 629 }
 630
 631
 632 void GuiApplication::commitData(QSessionManager & sm)
 633 {
 634         /// The implementation is required to avoid an application exit
 635         /// when session state save is triggered by session manager.
 636         /// The default implementation sends a close event to all
 637         /// visible top level widgets when session managment allows
 638         /// interaction.
 639         /// We are changing that to close all wiew one by one.
 640         /// FIXME: verify if the default implementation is enough now.
 641         if (sm.allowsInteraction() && !closeAllViews())
 642                 sm.cancel();
 643 }
 644
 645
 646 void GuiApplication::addMenuTranslator()
 647 {
 648         installTranslator(new MenuTranslator(this));
 649 }
 650
 651
 652 bool GuiApplication::unregisterView(int id)
 653 {
 654         updateIds(views_, view_ids_);
 655         BOOST_ASSERT(views_.find(id) != views_.end());
 656         BOOST_ASSERT(views_[id]);
 657
 658         map<int, GuiView *>::iterator it;
 659         for (it = views_.begin(); it != views_.end(); ++it) {
 660                 if (it->first == id) {
 661                         views_.erase(id);
 662                         break;
 663                 }
 664         }
 665         updateIds(views_, view_ids_);
 666         return true;
 667 }
 668
 669
 670 bool GuiApplication::closeAllViews()
 671 {
 672         updateIds(views_, view_ids_);
 673         if (views_.empty())
 674                 return true;
 675
 676         map<int, GuiView*> const cmap = views_;
 677         map<int, GuiView*>::const_iterator it;
 678         for (it = cmap.begin(); it != cmap.end(); ++it) {
 679                 if (!it->second->close())
 680                         return false;
 681         }
 682
 683         views_.clear();
 684         view_ids_.clear();
 685         return true;
 686 }
 687
 688
 689 GuiView & GuiApplication::view(int id) const
 690 {
 691         BOOST_ASSERT(views_.find(id) != views_.end());
 692         return *views_.find(id)->second;
 693 }
 694
 695
 696 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 697 {
 698         vector<int>::const_iterator it = view_ids_.begin();
 699         vector<int>::const_iterator const end = view_ids_.end();
 700         for (; it != end; ++it)
 701                 view(*it).hideDialog(name, inset);
 702 }
 703
 704
 705 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 706 {
 707         Buffer const * buffer_ = 0;
 708         vector<int>::const_iterator it = view_ids_.begin();
 709         vector<int>::const_iterator const end = view_ids_.end();
 710         for (; it != end; ++it) {
 711                 Buffer const * ptr = view(*it).updateInset(inset);
 712                 if (ptr)
 713                         buffer_ = ptr;
 714         }
 715         return buffer_;
 716 }
 717
 718
 719 void GuiApplication::readMenus(Lexer & lex)
 720 {
 721         menus().read(lex);
 722 }
 723
 724
 725 bool GuiApplication::searchMenu(FuncRequest const & func,
 726         vector<docstring> & names) const
 727 {
 728         return menus().searchMenu(func, names);
 729 }
 730
 731
 732 void GuiApplication::initGlobalMenu()
 733 {
 734         if (global_menubar_)
 735                 menus().fillMenuBar(global_menubar_, 0);
 736 }
 737
 738
 739 void GuiApplication::onLastWindowClosed()
 740 {
 741         if (global_menubar_)
 742                 global_menubar_->grabKeyboard();
 743 }
 744
 745 ////////////////////////////////////////////////////////////////////////
 746 // X11 specific stuff goes here...
 747 #ifdef Q_WS_X11
 748 bool GuiApplication::x11EventFilter(XEvent * xev)
 749 {
 750         if (!current_view_)
 751                 return false;
 752
 753         switch (xev->type) {
 754         case SelectionRequest: {
 755                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 756                         break;
 757                 LYXERR(Debug::GUI, "X requested selection.");
 758                 BufferView * bv = current_view_->view();
 759                 if (bv) {
 760                         docstring const sel = bv->requestSelection();
 761                         if (!sel.empty())
 762                                 selection_.put(sel);
 763                 }
 764                 break;
 765         }
 766         case SelectionClear: {
 767                 if (xev->xselectionclear.selection != XA_PRIMARY)
 768                         break;
 769                 LYXERR(Debug::GUI, "Lost selection.");
 770                 BufferView * bv = current_view_->view();
 771                 if (bv)
 772                         bv->clearSelection();
 773                 break;
 774         }
 775         }
 776         return false;
 777 }
 778 #endif
 779
 780 } // namespace frontend
 781
 782
 783 ////////////////////////////////////////////////////////////////////
 784 //
 785 // Font stuff
 786 //
 787 ////////////////////////////////////////////////////////////////////
 788
 789 frontend::FontLoader & theFontLoader()
 790 {
 791         BOOST_ASSERT(frontend::guiApp);
 792         return frontend::guiApp->fontLoader();
 793 }
 794
 795
 796 frontend::FontMetrics const & theFontMetrics(Font const & f)
 797 {
 798         return theFontMetrics(f.fontInfo());
 799 }
 800
 801
 802 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 803 {
 804         BOOST_ASSERT(frontend::guiApp);
 805         return frontend::guiApp->fontLoader().metrics(f);
 806 }
 807
 808
 809 frontend::Clipboard & theClipboard()
 810 {
 811         BOOST_ASSERT(frontend::guiApp);
 812         return frontend::guiApp->clipboard();
 813 }
 814
 815
 816 frontend::Selection & theSelection()
 817 {
 818         BOOST_ASSERT(frontend::guiApp);
 819         return frontend::guiApp->selection();
 820 }
 821
 822 } // namespace lyx
 823
 824 #include "GuiApplication_moc.cpp"