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         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 173         // seems to be the default case for applications like LyX.
 174         setQuitOnLastWindowClosed(false);
 175 #endif
 176
 177 #ifdef Q_WS_X11
 178         // doubleClickInterval() is 400 ms on X11 which is just too long.
 179         // On Windows and Mac OS X, the operating system's value is used.
 180         // On Microsoft Windows, calling this function sets the double
 181         // click interval for all applications. So we don't!
 182         QApplication::setDoubleClickInterval(300);
 183 #endif
 184
 185         // install translation file for Qt built-in dialogs
 186         QString language_name = QString("qt_") + QLocale::system().name();
 187
 188         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 189         // Short-named translator can be loaded from a long name, but not the
 190         // opposite. Therefore, long name should be used without truncation.
 191         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 192         if (qt_trans_.load(language_name,
 193                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 194         {
 195                 installTranslator(&qt_trans_);
 196                 // even if the language calls for RtL, don't do that
 197                 setLayoutDirection(Qt::LeftToRight);
 198                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 199                         << fromqstr(language_name));
 200         } else
 201                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 202                         << fromqstr(language_name));
 203
 204 #ifdef Q_WS_MACX
 205         // This allows to translate the strings that appear in the LyX menu.
 206         addMenuTranslator();
 207 #endif
 208         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 209
 210         using namespace lyx::graphics;
 211
 212         Image::newImage = boost::bind(&GuiImage::newImage);
 213         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 214
 215         // needs to be done before reading lyxrc
 216         QWidget w;
 217         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 218
 219         guiApp = this;
 220
 221         // Set the cache to 5120 kilobytes which corresponds to screen size of
 222         // 1280 by 1024 pixels with a color depth of 32 bits.
 223         QPixmapCache::setCacheLimit(5120);
 224
 225         // Initialize RC Fonts
 226         if (lyxrc.roman_font_name.empty())
 227                 lyxrc.roman_font_name = fromqstr(romanFontName());
 228
 229         if (lyxrc.sans_font_name.empty())
 230                 lyxrc.sans_font_name = fromqstr(sansFontName());
 231
 232         if (lyxrc.typewriter_font_name.empty())
 233                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 234
 235         general_timer_.setInterval(500);
 236         connect(&general_timer_, SIGNAL(timeout()),
 237                 this, SLOT(handleRegularEvents()));
 238         general_timer_.start();
 239
 240 #ifdef Q_WS_MACX
 241         if (global_menubar_ == 0) {
 242                 // Create the global default menubar which is shown for the dialogs
 243                 // and if no GuiView is visible.
 244                 global_menubar_ = new GlobalMenuBar();
 245         }
 246 #endif
 247 }
 248
 249
 250 GuiApplication::~GuiApplication()
 251 {
 252         socket_notifiers_.clear();
 253 }
 254
 255
 256 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
 257 {
 258         FuncStatus flag;
 259         bool enable = true;
 260
 261         switch(cmd.action) {
 262
 263         case LFUN_WINDOW_CLOSE:
 264                 enable = view_ids_.size() > 0;
 265                 break;
 266
 267         default:
 268                 if (!current_view_) {
 269                         enable = false;
 270                         break;
 271                 }
 272         }
 273
 274         if (!enable)
 275                 flag.enabled(false);
 276
 277         return flag;
 278 }
 279
 280
 281 bool GuiApplication::dispatch(FuncRequest const & cmd)
 282 {
 283         switch(cmd.action) {
 284
 285         case LFUN_WINDOW_NEW:
 286                 createView(toqstr(cmd.argument()));
 287                 break;
 288
 289         case LFUN_WINDOW_CLOSE:
 290                 // update bookmark pit of the current buffer before window close
 291                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 292                         theLyXFunc().gotoBookmark(i+1, false, false);
 293                 current_view_->close();
 294                 break;
 295
 296         case LFUN_LYX_QUIT:
 297                 // quitting is triggered by the gui code
 298                 // (leaving the event loop).
 299                 current_view_->message(from_utf8(N_("Exiting.")));
 300                 if (closeAllViews())
 301                         quit();
 302                 break;
 303
 304         case LFUN_SCREEN_FONT_UPDATE: {
 305                 // handle the screen font changes.
 306                 font_loader_.update();
 307                 // Backup current_view_
 308                 GuiView * view = current_view_;
 309                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 310                 // to skip the refresh.
 311                 current_view_ = 0;
 312                 BufferList::iterator it = theBufferList().begin();
 313                 BufferList::iterator const end = theBufferList().end();
 314                 for (; it != end; ++it)
 315                         (*it)->changed();
 316                 // Restore current_view_
 317                 current_view_ = view;
 318                 break;
 319         }
 320
 321         case LFUN_BUFFER_NEW:
 322                 if (viewCount() == 0
 323                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 324                         createView(QString(), false); // keep hidden
 325                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 326                         current_view_->show();
 327                         setActiveWindow(current_view_);
 328                 } else
 329                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 330                 break;
 331
 332         case LFUN_BUFFER_NEW_TEMPLATE:
 333                 if (viewCount() == 0
 334                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 335                         createView();
 336                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 337                         if (!current_view_->buffer())
 338                                 current_view_->close();
 339                 } else
 340                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 341                 break;
 342
 343         case LFUN_FILE_OPEN:
 344                 if (viewCount() == 0
 345                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 346                         createView();
 347                         current_view_->openDocument(to_utf8(cmd.argument()));
 348                         if (!current_view_->buffer())
 349                                 current_view_->close();
 350                 } else
 351                         current_view_->openDocument(to_utf8(cmd.argument()));
 352                 break;
 353
 354         default:
 355                 // Notify the caller that the action has not been dispatched.
 356                 return false;
 357         }
 358
 359         // The action has been dispatched.
 360         return true;
 361 }
 362
 363
 364 void GuiApplication::resetGui()
 365 {
 366         map<int, GuiView *>::iterator it;
 367         for (it = views_.begin(); it != views_.end(); ++it)
 368                 it->second->resetDialogs();
 369
 370         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 371 }
 372
 373
 374 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 375 {
 376         ids.clear();
 377         map<int, GuiView *>::const_iterator it;
 378         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 379                 ids.push_back(it->first);
 380 }
 381
 382
 383 void GuiApplication::createView(QString const & geometry_arg, bool autoShow)
 384 {
 385         // release the keyboard which might have been grabed by the global
 386         // menubar on Mac to catch shortcuts even without any GuiView.
 387         if (global_menubar_)
 388                 global_menubar_->releaseKeyboard();
 389
 390         // create new view
 391         updateIds(views_, view_ids_);
 392         int id = 0;
 393         while (views_.find(id) != views_.end())
 394                 id++;
 395         GuiView * view = new GuiView(id);
 396
 397         // copy the icon size from old view
 398         if (viewCount() > 0)
 399                 view->setIconSize(current_view_->iconSize());
 400
 401         // register view
 402         views_[id] = view;
 403         updateIds(views_, view_ids_);
 404
 405         if (autoShow) {
 406                 view->show();
 407                 setActiveWindow(view);
 408         }
 409
 410         if (!geometry_arg.isEmpty()) {
 411 #ifdef Q_WS_WIN
 412                 int x, y;
 413                 int w, h;
 414                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 415                 re.indexIn(geometry_arg);
 416                 w = re.cap(1).toInt();
 417                 h = re.cap(2).toInt();
 418                 x = re.cap(3).toInt();
 419                 y = re.cap(4).toInt();
 420                 view->setGeometry(x, y, w, h);
 421 #endif
 422         }
 423         view->setFocus();
 424         setCurrentView(*view);
 425 }
 426
 427
 428
 429
 430 Clipboard & GuiApplication::clipboard()
 431 {
 432         return clipboard_;
 433 }
 434
 435
 436 Selection & GuiApplication::selection()
 437 {
 438         return selection_;
 439 }
 440
 441
 442 int GuiApplication::exec()
 443 {
 444         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 445         return QApplication::exec();
 446 }
 447
 448
 449 void GuiApplication::exit(int status)
 450 {
 451         QApplication::exit(status);
 452 }
 453
 454
 455 void GuiApplication::execBatchCommands()
 456 {
 457         LyX::ref().execBatchCommands();
 458 }
 459
 460
 461 void GuiApplication::restoreGuiSession()
 462 {
 463         if (!lyxrc.load_session)
 464                 return;
 465
 466         Session & session = LyX::ref().session();
 467         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 468         // do not add to the lastfile list since these files are restored from
 469         // last session, and should be already there (regular files), or should
 470         // not be added at all (help files).
 471         for_each(lastopened.begin(), lastopened.end(),
 472                 bind(&GuiView::loadDocument, current_view_, _1, false));
 473
 474         // clear this list to save a few bytes of RAM
 475         session.lastOpened().clear();
 476 }
 477
 478
 479 QString const GuiApplication::romanFontName()
 480 {
 481         QFont font;
 482         font.setKerning(false);
 483         font.setStyleHint(QFont::Serif);
 484         font.setFamily("serif");
 485
 486         return QFontInfo(font).family();
 487 }
 488
 489
 490 QString const GuiApplication::sansFontName()
 491 {
 492         QFont font;
 493         font.setKerning(false);
 494         font.setStyleHint(QFont::SansSerif);
 495         font.setFamily("sans");
 496
 497         return QFontInfo(font).family();
 498 }
 499
 500
 501 QString const GuiApplication::typewriterFontName()
 502 {
 503         QFont font;
 504         font.setKerning(false);
 505         font.setStyleHint(QFont::TypeWriter);
 506         font.setFamily("monospace");
 507
 508         return QFontInfo(font).family();
 509 }
 510
 511
 512 void GuiApplication::handleRegularEvents()
 513 {
 514         ForkedCallsController::handleCompletedProcesses();
 515 }
 516
 517
 518 bool GuiApplication::event(QEvent * e)
 519 {
 520         switch(e->type()) {
 521         case QEvent::FileOpen: {
 522                 // Open a file; this happens only on Mac OS X for now
 523                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 524
 525                 if (!current_view_ || !current_view_->view())
 526                         // The application is not properly initialized yet.
 527                         // So we acknowledge the event and delay the file opening
 528                         // until LyX is ready.
 529                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 530                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 531                 else
 532                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 533                                 qstring_to_ucs4(foe->file())));
 534
 535                 e->accept();
 536                 return true;
 537         }
 538         default:
 539                 return QApplication::event(e);
 540         }
 541 }
 542
 543
 544 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 545 {
 546         try {
 547                 return QApplication::notify(receiver, event);
 548         }
 549         catch (ExceptionMessage const & e) {
 550                 switch(e.type_) {
 551                 case ErrorException:
 552                         LyX::cref().emergencyCleanup();
 553                         setQuitOnLastWindowClosed(false);
 554                         closeAllViews();
 555                         Alert::error(e.title_, e.details_);
 556 #ifndef NDEBUG
 557                         // Properly crash in debug mode in order to get a useful backtrace.
 558                         abort();
 559 #endif
 560                         // In release mode, try to exit gracefully.
 561                         this->exit(1);
 562
 563                 case BufferException: {
 564                         Buffer * buf = current_view_->buffer();
 565                         docstring details = e.details_ + '\n';
 566                         details += theBufferList().emergencyWrite(buf);
 567                         theBufferList().release(buf);
 568                         details += _("\nThe current document was closed.");
 569                         Alert::error(e.title_, details);
 570                         return false;
 571                 }
 572                 case WarningException:
 573                         Alert::warning(e.title_, e.details_);
 574                         return false;
 575                 };
 576         }
 577         catch (exception const & e) {
 578                 docstring s = _("LyX has caught an exception, it will now "
 579                         "attempt to save all unsaved documents and exit."
 580                         "\n\nException: ");
 581                 s += from_ascii(e.what());
 582                 Alert::error(_("Software exception Detected"), s);
 583                 LyX::cref().exit(1);
 584         }
 585         catch (...) {
 586                 docstring s = _("LyX has caught some really weird exception, it will "
 587                         "now attempt to save all unsaved documents and exit.");
 588                 Alert::error(_("Software exception Detected"), s);
 589                 LyX::cref().exit(1);
 590         }
 591
 592         return false;
 593 }
 594
 595
 596 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 597 {
 598         QColor const & qcol = color_cache_.get(col);
 599         if (!qcol.isValid()) {
 600                 rgbcol.r = 0;
 601                 rgbcol.g = 0;
 602                 rgbcol.b = 0;
 603                 return false;
 604         }
 605         rgbcol.r = qcol.red();
 606         rgbcol.g = qcol.green();
 607         rgbcol.b = qcol.blue();
 608         return true;
 609 }
 610
 611
 612 string const GuiApplication::hexName(ColorCode col)
 613 {
 614         return ltrim(fromqstr(color_cache_.get(col).name()), "#");
 615 }
 616
 617
 618 void GuiApplication::updateColor(ColorCode)
 619 {
 620         // FIXME: Bleh, can't we just clear them all at once ?
 621         color_cache_.clear();
 622 }
 623
 624
 625 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 626 {
 627         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 628         socket_notifiers_[fd] = sn;
 629         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 630 }
 631
 632
 633 void GuiApplication::socketDataReceived(int fd)
 634 {
 635         socket_notifiers_[fd]->func_();
 636 }
 637
 638
 639 void GuiApplication::unregisterSocketCallback(int fd)
 640 {
 641         socket_notifiers_.erase(fd);
 642 }
 643
 644
 645 void GuiApplication::commitData(QSessionManager & sm)
 646 {
 647         /// The implementation is required to avoid an application exit
 648         /// when session state save is triggered by session manager.
 649         /// The default implementation sends a close event to all
 650         /// visible top level widgets when session managment allows
 651         /// interaction.
 652         /// We are changing that to close all wiew one by one.
 653         /// FIXME: verify if the default implementation is enough now.
 654         if (sm.allowsInteraction() && !closeAllViews())
 655                 sm.cancel();
 656 }
 657
 658
 659 void GuiApplication::addMenuTranslator()
 660 {
 661         installTranslator(new MenuTranslator(this));
 662 }
 663
 664
 665 bool GuiApplication::unregisterView(int id)
 666 {
 667         updateIds(views_, view_ids_);
 668         BOOST_ASSERT(views_.find(id) != views_.end());
 669         BOOST_ASSERT(views_[id]);
 670
 671         map<int, GuiView *>::iterator it;
 672         for (it = views_.begin(); it != views_.end(); ++it) {
 673                 if (it->first == id) {
 674                         views_.erase(id);
 675                         break;
 676                 }
 677         }
 678         updateIds(views_, view_ids_);
 679         return true;
 680 }
 681
 682
 683 bool GuiApplication::closeAllViews()
 684 {
 685         updateIds(views_, view_ids_);
 686         if (views_.empty())
 687                 return true;
 688
 689         map<int, GuiView*> const cmap = views_;
 690         map<int, GuiView*>::const_iterator it;
 691         for (it = cmap.begin(); it != cmap.end(); ++it) {
 692                 if (!it->second->close())
 693                         return false;
 694         }
 695
 696         views_.clear();
 697         view_ids_.clear();
 698         return true;
 699 }
 700
 701
 702 GuiView & GuiApplication::view(int id) const
 703 {
 704         BOOST_ASSERT(views_.find(id) != views_.end());
 705         return *views_.find(id)->second;
 706 }
 707
 708
 709 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 710 {
 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                 view(*it).hideDialog(name, inset);
 715 }
 716
 717
 718 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 719 {
 720         Buffer const * buffer_ = 0;
 721         vector<int>::const_iterator it = view_ids_.begin();
 722         vector<int>::const_iterator const end = view_ids_.end();
 723         for (; it != end; ++it) {
 724                 Buffer const * ptr = view(*it).updateInset(inset);
 725                 if (ptr)
 726                         buffer_ = ptr;
 727         }
 728         return buffer_;
 729 }
 730
 731
 732 void GuiApplication::readMenus(Lexer & lex)
 733 {
 734         menus().read(lex);
 735 }
 736
 737
 738 bool GuiApplication::searchMenu(FuncRequest const & func,
 739         vector<docstring> & names) const
 740 {
 741         return menus().searchMenu(func, names);
 742 }
 743
 744
 745 void GuiApplication::initGlobalMenu()
 746 {
 747         if (global_menubar_)
 748                 menus().fillMenuBar(global_menubar_, 0);
 749 }
 750
 751
 752 void GuiApplication::onLastWindowClosed()
 753 {
 754         if (global_menubar_)
 755                 global_menubar_->grabKeyboard();
 756 }
 757
 758 ////////////////////////////////////////////////////////////////////////
 759 // X11 specific stuff goes here...
 760 #ifdef Q_WS_X11
 761 bool GuiApplication::x11EventFilter(XEvent * xev)
 762 {
 763         if (!current_view_)
 764                 return false;
 765
 766         switch (xev->type) {
 767         case SelectionRequest: {
 768                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 769                         break;
 770                 LYXERR(Debug::GUI, "X requested selection.");
 771                 BufferView * bv = current_view_->view();
 772                 if (bv) {
 773                         docstring const sel = bv->requestSelection();
 774                         if (!sel.empty())
 775                                 selection_.put(sel);
 776                 }
 777                 break;
 778         }
 779         case SelectionClear: {
 780                 if (xev->xselectionclear.selection != XA_PRIMARY)
 781                         break;
 782                 LYXERR(Debug::GUI, "Lost selection.");
 783                 BufferView * bv = current_view_->view();
 784                 if (bv)
 785                         bv->clearSelection();
 786                 break;
 787         }
 788         }
 789         return false;
 790 }
 791 #endif
 792
 793 } // namespace frontend
 794
 795
 796 ////////////////////////////////////////////////////////////////////
 797 //
 798 // Font stuff
 799 //
 800 ////////////////////////////////////////////////////////////////////
 801
 802 frontend::FontLoader & theFontLoader()
 803 {
 804         BOOST_ASSERT(frontend::guiApp);
 805         return frontend::guiApp->fontLoader();
 806 }
 807
 808
 809 frontend::FontMetrics const & theFontMetrics(Font const & f)
 810 {
 811         return theFontMetrics(f.fontInfo());
 812 }
 813
 814
 815 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 816 {
 817         BOOST_ASSERT(frontend::guiApp);
 818         return frontend::guiApp->fontLoader().metrics(f);
 819 }
 820
 821
 822 frontend::Clipboard & theClipboard()
 823 {
 824         BOOST_ASSERT(frontend::guiApp);
 825         return frontend::guiApp->clipboard();
 826 }
 827
 828
 829 frontend::Selection & theSelection()
 830 {
 831         BOOST_ASSERT(frontend::guiApp);
 832         return frontend::guiApp->selection();
 833 }
 834
 835 } // namespace lyx
 836
 837 #include "GuiApplication_moc.cpp"