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. We should have a
 165         // lyxrc setting for this in order to let the application stay resident.
 166         // But then we need some kind of dock icon, at least on Windows.
 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         if (global_menubar_)
 380                 global_menubar_->releaseKeyboard();
 381
 382         // create new view
 383         updateIds(views_, view_ids_);
 384         int id = 0;
 385         while (views_.find(id) != views_.end())
 386                 id++;
 387         GuiView * view = new GuiView(id);
 388
 389         // copy the icon size from old view
 390         if (viewCount() > 0)
 391                 view->setIconSize(current_view_->iconSize());
 392
 393         // register view
 394         views_[id] = view;
 395         updateIds(views_, view_ids_);
 396
 397         theLyXFunc().setLyXView(view);
 398         view->show();
 399         if (!geometry_arg.isEmpty()) {
 400 #ifdef Q_WS_WIN
 401                 int x, y;
 402                 int w, h;
 403                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 404                 re.indexIn(geometry_arg);
 405                 w = re.cap(1).toInt();
 406                 h = re.cap(2).toInt();
 407                 x = re.cap(3).toInt();
 408                 y = re.cap(4).toInt();
 409                 view->setGeometry(x, y, w, h);
 410 #endif
 411         }
 412         view->setFocus();
 413         setActiveWindow(view);
 414         setCurrentView(*view);
 415 }
 416
 417
 418
 419
 420 Clipboard & GuiApplication::clipboard()
 421 {
 422         return clipboard_;
 423 }
 424
 425
 426 Selection & GuiApplication::selection()
 427 {
 428         return selection_;
 429 }
 430
 431
 432 int GuiApplication::exec()
 433 {
 434         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 435         return QApplication::exec();
 436 }
 437
 438
 439 void GuiApplication::exit(int status)
 440 {
 441         QApplication::exit(status);
 442 }
 443
 444
 445 void GuiApplication::execBatchCommands()
 446 {
 447         LyX::ref().execBatchCommands();
 448 }
 449
 450
 451 void GuiApplication::restoreGuiSession()
 452 {
 453         if (!lyxrc.load_session)
 454                 return;
 455
 456         Session & session = LyX::ref().session();
 457         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 458         // do not add to the lastfile list since these files are restored from
 459         // last session, and should be already there (regular files), or should
 460         // not be added at all (help files).
 461         for_each(lastopened.begin(), lastopened.end(),
 462                 bind(&GuiView::loadDocument, current_view_, _1, false));
 463
 464         // clear this list to save a few bytes of RAM
 465         session.lastOpened().clear();
 466 }
 467
 468
 469 QString const GuiApplication::romanFontName()
 470 {
 471         QFont font;
 472         font.setKerning(false);
 473         font.setStyleHint(QFont::Serif);
 474         font.setFamily("serif");
 475
 476         return QFontInfo(font).family();
 477 }
 478
 479
 480 QString const GuiApplication::sansFontName()
 481 {
 482         QFont font;
 483         font.setKerning(false);
 484         font.setStyleHint(QFont::SansSerif);
 485         font.setFamily("sans");
 486
 487         return QFontInfo(font).family();
 488 }
 489
 490
 491 QString const GuiApplication::typewriterFontName()
 492 {
 493         QFont font;
 494         font.setKerning(false);
 495         font.setStyleHint(QFont::TypeWriter);
 496         font.setFamily("monospace");
 497
 498         return QFontInfo(font).family();
 499 }
 500
 501
 502 void GuiApplication::handleRegularEvents()
 503 {
 504         ForkedCallsController::handleCompletedProcesses();
 505 }
 506
 507
 508 bool GuiApplication::event(QEvent * e)
 509 {
 510         switch(e->type()) {
 511         case QEvent::FileOpen: {
 512                 // Open a file; this happens only on Mac OS X for now
 513                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 514
 515                 if (!current_view_ || !current_view_->view())
 516                         // The application is not properly initialized yet.
 517                         // So we acknowledge the event and delay the file opening
 518                         // until LyX is ready.
 519                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 520                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 521                 else
 522                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 523                                 qstring_to_ucs4(foe->file())));
 524
 525                 e->accept();
 526                 return true;
 527         }
 528         default:
 529                 return QApplication::event(e);
 530         }
 531 }
 532
 533
 534 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 535 {
 536         try {
 537                 return QApplication::notify(receiver, event);
 538         }
 539         catch (ExceptionMessage const & e) {
 540                 switch(e.type_) {
 541                 case ErrorException:
 542                         LyX::cref().emergencyCleanup();
 543                         setQuitOnLastWindowClosed(false);
 544                         closeAllViews();
 545                         Alert::error(e.title_, e.details_);
 546 #ifndef NDEBUG
 547                         // Properly crash in debug mode in order to get a useful backtrace.
 548                         abort();
 549 #endif
 550                         // In release mode, try to exit gracefully.
 551                         this->exit(1);
 552
 553                 case BufferException: {
 554                         Buffer * buf = current_view_->buffer();
 555                         docstring details = e.details_ + '\n';
 556                         details += theBufferList().emergencyWrite(buf);
 557                         theBufferList().release(buf);
 558                         details += _("\nThe current document was closed.");
 559                         Alert::error(e.title_, details);
 560                         return false;
 561                 }
 562                 case WarningException:
 563                         Alert::warning(e.title_, e.details_);
 564                         return false;
 565                 };
 566         }
 567         catch (exception const & e) {
 568                 docstring s = _("LyX has caught an exception, it will now "
 569                         "attempt to save all unsaved documents and exit."
 570                         "\n\nException: ");
 571                 s += from_ascii(e.what());
 572                 Alert::error(_("Software exception Detected"), s);
 573                 LyX::cref().exit(1);
 574         }
 575         catch (...) {
 576                 docstring s = _("LyX has caught some really weird exception, it will "
 577                         "now attempt to save all unsaved documents and exit.");
 578                 Alert::error(_("Software exception Detected"), s);
 579                 LyX::cref().exit(1);
 580         }
 581
 582         return false;
 583 }
 584
 585
 586 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 587 {
 588         QColor const & qcol = color_cache_.get(col);
 589         if (!qcol.isValid()) {
 590                 rgbcol.r = 0;
 591                 rgbcol.g = 0;
 592                 rgbcol.b = 0;
 593                 return false;
 594         }
 595         rgbcol.r = qcol.red();
 596         rgbcol.g = qcol.green();
 597         rgbcol.b = qcol.blue();
 598         return true;
 599 }
 600
 601
 602 string const GuiApplication::hexName(ColorCode col)
 603 {
 604         return ltrim(fromqstr(color_cache_.get(col).name()), "#");
 605 }
 606
 607
 608 void GuiApplication::updateColor(ColorCode)
 609 {
 610         // FIXME: Bleh, can't we just clear them all at once ?
 611         color_cache_.clear();
 612 }
 613
 614
 615 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 616 {
 617         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 618         socket_notifiers_[fd] = sn;
 619         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 620 }
 621
 622
 623 void GuiApplication::socketDataReceived(int fd)
 624 {
 625         socket_notifiers_[fd]->func_();
 626 }
 627
 628
 629 void GuiApplication::unregisterSocketCallback(int fd)
 630 {
 631         socket_notifiers_.erase(fd);
 632 }
 633
 634
 635 void GuiApplication::commitData(QSessionManager & sm)
 636 {
 637         /// The implementation is required to avoid an application exit
 638         /// when session state save is triggered by session manager.
 639         /// The default implementation sends a close event to all
 640         /// visible top level widgets when session managment allows
 641         /// interaction.
 642         /// We are changing that to close all wiew one by one.
 643         /// FIXME: verify if the default implementation is enough now.
 644         if (sm.allowsInteraction() && !closeAllViews())
 645                 sm.cancel();
 646 }
 647
 648
 649 void GuiApplication::addMenuTranslator()
 650 {
 651         installTranslator(new MenuTranslator(this));
 652 }
 653
 654
 655 bool GuiApplication::unregisterView(int id)
 656 {
 657         updateIds(views_, view_ids_);
 658         BOOST_ASSERT(views_.find(id) != views_.end());
 659         BOOST_ASSERT(views_[id]);
 660
 661         map<int, GuiView *>::iterator it;
 662         for (it = views_.begin(); it != views_.end(); ++it) {
 663                 if (it->first == id) {
 664                         views_.erase(id);
 665                         break;
 666                 }
 667         }
 668         updateIds(views_, view_ids_);
 669         return true;
 670 }
 671
 672
 673 bool GuiApplication::closeAllViews()
 674 {
 675         updateIds(views_, view_ids_);
 676         if (views_.empty())
 677                 return true;
 678
 679         map<int, GuiView*> const cmap = views_;
 680         map<int, GuiView*>::const_iterator it;
 681         for (it = cmap.begin(); it != cmap.end(); ++it) {
 682                 if (!it->second->close())
 683                         return false;
 684         }
 685
 686         views_.clear();
 687         view_ids_.clear();
 688         return true;
 689 }
 690
 691
 692 GuiView & GuiApplication::view(int id) const
 693 {
 694         BOOST_ASSERT(views_.find(id) != views_.end());
 695         return *views_.find(id)->second;
 696 }
 697
 698
 699 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 700 {
 701         vector<int>::const_iterator it = view_ids_.begin();
 702         vector<int>::const_iterator const end = view_ids_.end();
 703         for (; it != end; ++it)
 704                 view(*it).hideDialog(name, inset);
 705 }
 706
 707
 708 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 709 {
 710         Buffer const * buffer_ = 0;
 711         vector<int>::const_iterator it = view_ids_.begin();
 712         vector<int>::const_iterator const end = view_ids_.end();
 713         for (; it != end; ++it) {
 714                 Buffer const * ptr = view(*it).updateInset(inset);
 715                 if (ptr)
 716                         buffer_ = ptr;
 717         }
 718         return buffer_;
 719 }
 720
 721
 722 void GuiApplication::readMenus(Lexer & lex)
 723 {
 724         menus().read(lex);
 725 }
 726
 727
 728 bool GuiApplication::searchMenu(FuncRequest const & func,
 729         vector<docstring> & names) const
 730 {
 731         return menus().searchMenu(func, names);
 732 }
 733
 734
 735 void GuiApplication::initGlobalMenu()
 736 {
 737         if (global_menubar_)
 738                 menus().fillMenuBar(global_menubar_, 0);
 739 }
 740
 741
 742 void GuiApplication::onLastWindowClosed()
 743 {
 744         if (global_menubar_)
 745                 global_menubar_->grabKeyboard();
 746 }
 747
 748 ////////////////////////////////////////////////////////////////////////
 749 // X11 specific stuff goes here...
 750 #ifdef Q_WS_X11
 751 bool GuiApplication::x11EventFilter(XEvent * xev)
 752 {
 753         if (!current_view_)
 754                 return false;
 755
 756         switch (xev->type) {
 757         case SelectionRequest: {
 758                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 759                         break;
 760                 LYXERR(Debug::GUI, "X requested selection.");
 761                 BufferView * bv = current_view_->view();
 762                 if (bv) {
 763                         docstring const sel = bv->requestSelection();
 764                         if (!sel.empty())
 765                                 selection_.put(sel);
 766                 }
 767                 break;
 768         }
 769         case SelectionClear: {
 770                 if (xev->xselectionclear.selection != XA_PRIMARY)
 771                         break;
 772                 LYXERR(Debug::GUI, "Lost selection.");
 773                 BufferView * bv = current_view_->view();
 774                 if (bv)
 775                         bv->clearSelection();
 776                 break;
 777         }
 778         }
 779         return false;
 780 }
 781 #endif
 782
 783 } // namespace frontend
 784
 785
 786 ////////////////////////////////////////////////////////////////////
 787 //
 788 // Font stuff
 789 //
 790 ////////////////////////////////////////////////////////////////////
 791
 792 frontend::FontLoader & theFontLoader()
 793 {
 794         BOOST_ASSERT(frontend::guiApp);
 795         return frontend::guiApp->fontLoader();
 796 }
 797
 798
 799 frontend::FontMetrics const & theFontMetrics(Font const & f)
 800 {
 801         return theFontMetrics(f.fontInfo());
 802 }
 803
 804
 805 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 806 {
 807         BOOST_ASSERT(frontend::guiApp);
 808         return frontend::guiApp->fontLoader().metrics(f);
 809 }
 810
 811
 812 frontend::Clipboard & theClipboard()
 813 {
 814         BOOST_ASSERT(frontend::guiApp);
 815         return frontend::guiApp->clipboard();
 816 }
 817
 818
 819 frontend::Selection & theSelection()
 820 {
 821         BOOST_ASSERT(frontend::guiApp);
 822         return frontend::guiApp->selection();
 823 }
 824
 825 } // namespace lyx
 826
 827 #include "GuiApplication_moc.cpp"