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/assert.h"
  40 #include "support/debug.h"
  41 #include "support/ExceptionMessage.h"
  42 #include "support/FileName.h"
  43 #include "support/ForkedCalls.h"
  44 #include "support/gettext.h"
  45 #include "support/lstrings.h"
  46 #include "support/os.h"
  47 #include "support/Package.h"
  48
  49 #include <QApplication>
  50 #include <QClipboard>
  51 #include <QEventLoop>
  52 #include <QFileOpenEvent>
  53 #include <QLocale>
  54 #include <QLibraryInfo>
  55 #include <QMenuBar>
  56 #include <QPixmapCache>
  57 #include <QRegExp>
  58 #include <QSessionManager>
  59 #include <QSocketNotifier>
  60 #include <QTextCodec>
  61 #include <QTimer>
  62 #include <QTranslator>
  63 #include <QWidget>
  64
  65 #ifdef Q_WS_X11
  66 #include <X11/Xatom.h>
  67 #include <X11/Xlib.h>
  68 #undef CursorShape
  69 #undef None
  70 #endif
  71
  72 #include <boost/bind.hpp>
  73
  74 #include <exception>
  75
  76 using namespace std;
  77 using namespace lyx::support;
  78
  79 namespace lyx {
  80
  81 frontend::Application * createApplication(int & argc, char * argv[])
  82 {
  83         return new frontend::GuiApplication(argc, argv);
  84 }
  85
  86
  87 namespace frontend {
  88
  89 class SocketNotifier : public QSocketNotifier
  90 {
  91 public:
  92         /// connect a connection notification from the LyXServerSocket
  93         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
  94                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
  95         {}
  96
  97 public:
  98         /// The callback function
  99         Application::SocketCallback func_;
 100 };
 101
 102
 103 ////////////////////////////////////////////////////////////////////////
 104 // Mac specific stuff goes here...
 105
 106 class MenuTranslator : public QTranslator
 107 {
 108 public:
 109         MenuTranslator(QObject * parent)
 110                 : QTranslator(parent)
 111         {}
 112
 113         QString translate(const char * /*context*/,
 114           const char * sourceText,
 115           const char * /*comment*/ = 0)
 116         {
 117                 string const s = sourceText;
 118                 if (s == N_("About %1") || s == N_("Preferences")
 119                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 120                         return qt_(s);
 121                 else
 122                         return QString();
 123         }
 124 };
 125
 126 class GlobalMenuBar : public QMenuBar
 127 {
 128 public:
 129         ///
 130         GlobalMenuBar() : QMenuBar(0) {}
 131
 132         ///
 133         bool event(QEvent * e)
 134         {
 135                 if (e->type() == QEvent::ShortcutOverride) {
 136                         //          && activeWindow() == 0) {
 137                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 138                         KeySymbol sym;
 139                         setKeySymbol(&sym, ke);
 140                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 141                         e->accept();
 142                         return true;
 143                 }
 144                 return false;
 145         }
 146 };
 147
 148 ///////////////////////////////////////////////////////////////
 149 // You can find more platform specific stuff
 150 // at the end of this file...
 151 ///////////////////////////////////////////////////////////////
 152
 153
 154 GuiApplication * guiApp;
 155
 156
 157 GuiApplication::GuiApplication(int & argc, char ** argv)
 158         : QApplication(argc, argv), Application(), current_view_(0), global_menubar_(0)
 159 {
 160         QString app_name = "LyX";
 161         QCoreApplication::setOrganizationName(app_name);
 162         QCoreApplication::setOrganizationDomain("lyx.org");
 163         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 164
 165         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 166         // lyxrc setting for this in order to let the application stay resident.
 167         // But then we need some kind of dock icon, at least on Windows.
 168         /*
 169         if (lyxrc.quit_on_last_window_closed)
 170                 setQuitOnLastWindowClosed(false);
 171         */
 172 #ifdef Q_WS_MACX
 173         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 174         // seems to be the default case for applications like LyX.
 175         setQuitOnLastWindowClosed(false);
 176 #endif
 177
 178 #ifdef Q_WS_X11
 179         // doubleClickInterval() is 400 ms on X11 which is just too long.
 180         // On Windows and Mac OS X, the operating system's value is used.
 181         // On Microsoft Windows, calling this function sets the double
 182         // click interval for all applications. So we don't!
 183         QApplication::setDoubleClickInterval(300);
 184 #endif
 185
 186         // install translation file for Qt built-in dialogs
 187         QString language_name = QString("qt_") + QLocale::system().name();
 188
 189         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 190         // Short-named translator can be loaded from a long name, but not the
 191         // opposite. Therefore, long name should be used without truncation.
 192         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 193         if (qt_trans_.load(language_name,
 194                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 195         {
 196                 installTranslator(&qt_trans_);
 197                 // even if the language calls for RtL, don't do that
 198                 setLayoutDirection(Qt::LeftToRight);
 199                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 200                         << fromqstr(language_name));
 201         } else
 202                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 203                         << fromqstr(language_name));
 204
 205 #ifdef Q_WS_MACX
 206         // This allows to translate the strings that appear in the LyX menu.
 207         addMenuTranslator();
 208 #endif
 209         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 210
 211         using namespace lyx::graphics;
 212
 213         Image::newImage = boost::bind(&GuiImage::newImage);
 214         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 215
 216         // needs to be done before reading lyxrc
 217         QWidget w;
 218         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 219
 220         guiApp = this;
 221
 222         // Set the cache to 5120 kilobytes which corresponds to screen size of
 223         // 1280 by 1024 pixels with a color depth of 32 bits.
 224         QPixmapCache::setCacheLimit(5120);
 225
 226         // Initialize RC Fonts
 227         if (lyxrc.roman_font_name.empty())
 228                 lyxrc.roman_font_name = fromqstr(romanFontName());
 229
 230         if (lyxrc.sans_font_name.empty())
 231                 lyxrc.sans_font_name = fromqstr(sansFontName());
 232
 233         if (lyxrc.typewriter_font_name.empty())
 234                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 235
 236         general_timer_.setInterval(500);
 237         connect(&general_timer_, SIGNAL(timeout()),
 238                 this, SLOT(handleRegularEvents()));
 239         general_timer_.start();
 240
 241 #ifdef Q_WS_MACX
 242         if (global_menubar_ == 0) {
 243                 // Create the global default menubar which is shown for the dialogs
 244                 // and if no GuiView is visible.
 245                 global_menubar_ = new GlobalMenuBar();
 246         }
 247 #endif
 248 }
 249
 250
 251 GuiApplication::~GuiApplication()
 252 {
 253         socket_notifiers_.clear();
 254 }
 255
 256
 257 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
 258 {
 259         FuncStatus flag;
 260         bool enable = true;
 261
 262         switch(cmd.action) {
 263
 264         case LFUN_WINDOW_CLOSE:
 265                 enable = view_ids_.size() > 0;
 266                 break;
 267
 268         default:
 269                 if (!current_view_) {
 270                         enable = false;
 271                         break;
 272                 }
 273         }
 274
 275         if (!enable)
 276                 flag.enabled(false);
 277
 278         return flag;
 279 }
 280
 281
 282 bool GuiApplication::dispatch(FuncRequest const & cmd)
 283 {
 284         switch(cmd.action) {
 285
 286         case LFUN_WINDOW_NEW:
 287                 createView(toqstr(cmd.argument()));
 288                 break;
 289
 290         case LFUN_WINDOW_CLOSE:
 291                 // update bookmark pit of the current buffer before window close
 292                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 293                         theLyXFunc().gotoBookmark(i+1, false, false);
 294                 current_view_->close();
 295                 break;
 296
 297         case LFUN_LYX_QUIT:
 298                 // quitting is triggered by the gui code
 299                 // (leaving the event loop).
 300                 if (current_view_)
 301                         current_view_->message(from_utf8(N_("Exiting.")));
 302                 if (closeAllViews())
 303                         quit();
 304                 break;
 305
 306         case LFUN_SCREEN_FONT_UPDATE: {
 307                 // handle the screen font changes.
 308                 font_loader_.update();
 309                 // Backup current_view_
 310                 GuiView * view = current_view_;
 311                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 312                 // to skip the refresh.
 313                 current_view_ = 0;
 314                 BufferList::iterator it = theBufferList().begin();
 315                 BufferList::iterator const end = theBufferList().end();
 316                 for (; it != end; ++it)
 317                         (*it)->changed();
 318                 // Restore current_view_
 319                 current_view_ = view;
 320                 break;
 321         }
 322
 323         case LFUN_BUFFER_NEW:
 324                 if (viewCount() == 0
 325                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 326                         createView(QString(), false); // keep hidden
 327                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 328                         current_view_->show();
 329                         setActiveWindow(current_view_);
 330                 } else
 331                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 332                 break;
 333
 334         case LFUN_BUFFER_NEW_TEMPLATE:
 335                 if (viewCount() == 0
 336                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 337                         createView();
 338                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 339                         if (!current_view_->buffer())
 340                                 current_view_->close();
 341                 } else
 342                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 343                 break;
 344
 345         case LFUN_FILE_OPEN:
 346                 if (viewCount() == 0
 347                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 348                         createView();
 349                         current_view_->openDocument(to_utf8(cmd.argument()));
 350                         if (!current_view_->buffer())
 351                                 current_view_->close();
 352                 } else
 353                         current_view_->openDocument(to_utf8(cmd.argument()));
 354                 break;
 355
 356         default:
 357                 // Notify the caller that the action has not been dispatched.
 358                 return false;
 359         }
 360
 361         // The action has been dispatched.
 362         return true;
 363 }
 364
 365
 366 void GuiApplication::resetGui()
 367 {
 368         map<int, GuiView *>::iterator it;
 369         for (it = views_.begin(); it != views_.end(); ++it)
 370                 it->second->resetDialogs();
 371
 372         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 373 }
 374
 375
 376 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 377 {
 378         ids.clear();
 379         map<int, GuiView *>::const_iterator it;
 380         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 381                 ids.push_back(it->first);
 382 }
 383
 384
 385 void GuiApplication::createView(QString const & geometry_arg, bool autoShow)
 386 {
 387         // release the keyboard which might have been grabed by the global
 388         // menubar on Mac to catch shortcuts even without any GuiView.
 389         if (global_menubar_)
 390                 global_menubar_->releaseKeyboard();
 391
 392         // create new view
 393         updateIds(views_, view_ids_);
 394         int id = 0;
 395         while (views_.find(id) != views_.end())
 396                 id++;
 397         GuiView * view = new GuiView(id);
 398
 399         // copy the icon size from old view
 400         if (viewCount() > 0)
 401                 view->setIconSize(current_view_->iconSize());
 402
 403         // register view
 404         views_[id] = view;
 405         updateIds(views_, view_ids_);
 406
 407         if (autoShow) {
 408                 view->show();
 409                 setActiveWindow(view);
 410         }
 411
 412         if (!geometry_arg.isEmpty()) {
 413 #ifdef Q_WS_WIN
 414                 int x, y;
 415                 int w, h;
 416                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 417                 re.indexIn(geometry_arg);
 418                 w = re.cap(1).toInt();
 419                 h = re.cap(2).toInt();
 420                 x = re.cap(3).toInt();
 421                 y = re.cap(4).toInt();
 422                 view->setGeometry(x, y, w, h);
 423 #endif
 424         }
 425         view->setFocus();
 426         setCurrentView(view);
 427 }
 428
 429
 430
 431
 432 Clipboard & GuiApplication::clipboard()
 433 {
 434         return clipboard_;
 435 }
 436
 437
 438 Selection & GuiApplication::selection()
 439 {
 440         return selection_;
 441 }
 442
 443
 444 int GuiApplication::exec()
 445 {
 446         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 447         return QApplication::exec();
 448 }
 449
 450
 451 void GuiApplication::exit(int status)
 452 {
 453         QApplication::exit(status);
 454 }
 455
 456
 457 void GuiApplication::execBatchCommands()
 458 {
 459         LyX::ref().execBatchCommands();
 460 }
 461
 462
 463 void GuiApplication::restoreGuiSession()
 464 {
 465         if (!lyxrc.load_session)
 466                 return;
 467
 468         Session & session = LyX::ref().session();
 469         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 470         // do not add to the lastfile list since these files are restored from
 471         // last session, and should be already there (regular files), or should
 472         // not be added at all (help files).
 473         for_each(lastopened.begin(), lastopened.end(),
 474                 bind(&GuiView::loadDocument, current_view_, _1, false));
 475
 476         // clear this list to save a few bytes of RAM
 477         session.lastOpened().clear();
 478 }
 479
 480
 481 QString const GuiApplication::romanFontName()
 482 {
 483         QFont font;
 484         font.setKerning(false);
 485         font.setStyleHint(QFont::Serif);
 486         font.setFamily("serif");
 487
 488         return QFontInfo(font).family();
 489 }
 490
 491
 492 QString const GuiApplication::sansFontName()
 493 {
 494         QFont font;
 495         font.setKerning(false);
 496         font.setStyleHint(QFont::SansSerif);
 497         font.setFamily("sans");
 498
 499         return QFontInfo(font).family();
 500 }
 501
 502
 503 QString const GuiApplication::typewriterFontName()
 504 {
 505         QFont font;
 506         font.setKerning(false);
 507         font.setStyleHint(QFont::TypeWriter);
 508         font.setFamily("monospace");
 509
 510         return QFontInfo(font).family();
 511 }
 512
 513
 514 void GuiApplication::handleRegularEvents()
 515 {
 516         ForkedCallsController::handleCompletedProcesses();
 517 }
 518
 519
 520 bool GuiApplication::event(QEvent * e)
 521 {
 522         switch(e->type()) {
 523         case QEvent::FileOpen: {
 524                 // Open a file; this happens only on Mac OS X for now
 525                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 526
 527                 if (!current_view_ || !current_view_->view())
 528                         // The application is not properly initialized yet.
 529                         // So we acknowledge the event and delay the file opening
 530                         // until LyX is ready.
 531                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 532                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 533                 else
 534                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 535                                 qstring_to_ucs4(foe->file())));
 536
 537                 e->accept();
 538                 return true;
 539         }
 540         default:
 541                 return QApplication::event(e);
 542         }
 543 }
 544
 545
 546 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 547 {
 548         try {
 549                 return QApplication::notify(receiver, event);
 550         }
 551         catch (ExceptionMessage const & e) {
 552                 switch(e.type_) {
 553                 case ErrorException:
 554                         LyX::cref().emergencyCleanup();
 555                         setQuitOnLastWindowClosed(false);
 556                         closeAllViews();
 557                         Alert::error(e.title_, e.details_);
 558 #ifndef NDEBUG
 559                         // Properly crash in debug mode in order to get a useful backtrace.
 560                         abort();
 561 #endif
 562                         // In release mode, try to exit gracefully.
 563                         this->exit(1);
 564
 565                 case BufferException: {
 566                         Buffer * buf = current_view_->buffer();
 567                         docstring details = e.details_ + '\n';
 568                         details += theBufferList().emergencyWrite(buf);
 569                         theBufferList().release(buf);
 570                         details += "\n" + _("The current document was closed.");
 571                         Alert::error(e.title_, details);
 572                         return false;
 573                 }
 574                 case WarningException:
 575                         Alert::warning(e.title_, e.details_);
 576                         return false;
 577                 }
 578         }
 579         catch (exception const & e) {
 580                 docstring s = _("LyX has caught an exception, it will now "
 581                         "attempt to save all unsaved documents and exit."
 582                         "\n\nException: ");
 583                 s += from_ascii(e.what());
 584                 Alert::error(_("Software exception Detected"), s);
 585                 LyX::cref().exit(1);
 586         }
 587         catch (...) {
 588                 docstring s = _("LyX has caught some really weird exception, it will "
 589                         "now attempt to save all unsaved documents and exit.");
 590                 Alert::error(_("Software exception Detected"), s);
 591                 LyX::cref().exit(1);
 592         }
 593
 594         return false;
 595 }
 596
 597
 598 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 599 {
 600         QColor const & qcol = color_cache_.get(col);
 601         if (!qcol.isValid()) {
 602                 rgbcol.r = 0;
 603                 rgbcol.g = 0;
 604                 rgbcol.b = 0;
 605                 return false;
 606         }
 607         rgbcol.r = qcol.red();
 608         rgbcol.g = qcol.green();
 609         rgbcol.b = qcol.blue();
 610         return true;
 611 }
 612
 613
 614 string const GuiApplication::hexName(ColorCode col)
 615 {
 616         return ltrim(fromqstr(color_cache_.get(col).name()), "#");
 617 }
 618
 619
 620 void GuiApplication::updateColor(ColorCode)
 621 {
 622         // FIXME: Bleh, can't we just clear them all at once ?
 623         color_cache_.clear();
 624 }
 625
 626
 627 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 628 {
 629         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 630         socket_notifiers_[fd] = sn;
 631         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 632 }
 633
 634
 635 void GuiApplication::socketDataReceived(int fd)
 636 {
 637         socket_notifiers_[fd]->func_();
 638 }
 639
 640
 641 void GuiApplication::unregisterSocketCallback(int fd)
 642 {
 643         socket_notifiers_.erase(fd);
 644 }
 645
 646
 647 void GuiApplication::commitData(QSessionManager & sm)
 648 {
 649         /// The implementation is required to avoid an application exit
 650         /// when session state save is triggered by session manager.
 651         /// The default implementation sends a close event to all
 652         /// visible top level widgets when session managment allows
 653         /// interaction.
 654         /// We are changing that to close all wiew one by one.
 655         /// FIXME: verify if the default implementation is enough now.
 656         if (sm.allowsInteraction() && !closeAllViews())
 657                 sm.cancel();
 658 }
 659
 660
 661 void GuiApplication::addMenuTranslator()
 662 {
 663         installTranslator(new MenuTranslator(this));
 664 }
 665
 666
 667 bool GuiApplication::unregisterView(int id)
 668 {
 669         updateIds(views_, view_ids_);
 670         LASSERT(views_.find(id) != views_.end(), /**/);
 671         LASSERT(views_[id], /**/);
 672
 673         map<int, GuiView *>::iterator it;
 674         for (it = views_.begin(); it != views_.end(); ++it) {
 675                 if (it->first == id) {
 676                         views_.erase(id);
 677                         break;
 678                 }
 679         }
 680         updateIds(views_, view_ids_);
 681         return true;
 682 }
 683
 684
 685 bool GuiApplication::closeAllViews()
 686 {
 687         updateIds(views_, view_ids_);
 688         if (views_.empty())
 689                 return true;
 690
 691         map<int, GuiView*> const cmap = views_;
 692         map<int, GuiView*>::const_iterator it;
 693         for (it = cmap.begin(); it != cmap.end(); ++it) {
 694                 if (!it->second->close())
 695                         return false;
 696         }
 697
 698         views_.clear();
 699         view_ids_.clear();
 700         return true;
 701 }
 702
 703
 704 GuiView & GuiApplication::view(int id) const
 705 {
 706         LASSERT(views_.find(id) != views_.end(), /**/);
 707         return *views_.find(id)->second;
 708 }
 709
 710
 711 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 712 {
 713         vector<int>::const_iterator it = view_ids_.begin();
 714         vector<int>::const_iterator const end = view_ids_.end();
 715         for (; it != end; ++it)
 716                 view(*it).hideDialog(name, inset);
 717 }
 718
 719
 720 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 721 {
 722         Buffer const * buffer_ = 0;
 723         vector<int>::const_iterator it = view_ids_.begin();
 724         vector<int>::const_iterator const end = view_ids_.end();
 725         for (; it != end; ++it) {
 726                 Buffer const * ptr = view(*it).updateInset(inset);
 727                 if (ptr)
 728                         buffer_ = ptr;
 729         }
 730         return buffer_;
 731 }
 732
 733
 734 void GuiApplication::readMenus(Lexer & lex)
 735 {
 736         menus().read(lex);
 737 }
 738
 739
 740 bool GuiApplication::searchMenu(FuncRequest const & func,
 741         vector<docstring> & names) const
 742 {
 743         return menus().searchMenu(func, names);
 744 }
 745
 746
 747 void GuiApplication::initGlobalMenu()
 748 {
 749         if (global_menubar_)
 750                 menus().fillMenuBar(global_menubar_, 0, true);
 751 }
 752
 753
 754 void GuiApplication::onLastWindowClosed()
 755 {
 756         if (global_menubar_)
 757                 global_menubar_->grabKeyboard();
 758 }
 759
 760
 761 ////////////////////////////////////////////////////////////////////////
 762 //
 763 // X11 specific stuff goes here...
 764
 765 #ifdef Q_WS_X11
 766 bool GuiApplication::x11EventFilter(XEvent * xev)
 767 {
 768         if (!current_view_)
 769                 return false;
 770
 771         switch (xev->type) {
 772         case SelectionRequest: {
 773                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 774                         break;
 775                 LYXERR(Debug::GUI, "X requested selection.");
 776                 BufferView * bv = current_view_->view();
 777                 if (bv) {
 778                         docstring const sel = bv->requestSelection();
 779                         if (!sel.empty())
 780                                 selection_.put(sel);
 781                 }
 782                 break;
 783         }
 784         case SelectionClear: {
 785                 if (xev->xselectionclear.selection != XA_PRIMARY)
 786                         break;
 787                 LYXERR(Debug::GUI, "Lost selection.");
 788                 BufferView * bv = current_view_->view();
 789                 if (bv)
 790                         bv->clearSelection();
 791                 break;
 792         }
 793         }
 794         return false;
 795 }
 796 #endif
 797
 798 } // namespace frontend
 799
 800
 801 void hideDialogs(std::string const & name, Inset * inset)
 802 {
 803         if (theApp())
 804                 theApp()->hideDialogs(name, inset);
 805 }
 806
 807
 808 ////////////////////////////////////////////////////////////////////
 809 //
 810 // Font stuff
 811 //
 812 ////////////////////////////////////////////////////////////////////
 813
 814 frontend::FontLoader & theFontLoader()
 815 {
 816         LASSERT(frontend::guiApp, /**/);
 817         return frontend::guiApp->fontLoader();
 818 }
 819
 820
 821 frontend::FontMetrics const & theFontMetrics(Font const & f)
 822 {
 823         return theFontMetrics(f.fontInfo());
 824 }
 825
 826
 827 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 828 {
 829         LASSERT(frontend::guiApp, /**/);
 830         return frontend::guiApp->fontLoader().metrics(f);
 831 }
 832
 833
 834 ////////////////////////////////////////////////////////////////////
 835 //
 836 // Misc stuff
 837 //
 838 ////////////////////////////////////////////////////////////////////
 839
 840 frontend::Clipboard & theClipboard()
 841 {
 842         LASSERT(frontend::guiApp, /**/);
 843         return frontend::guiApp->clipboard();
 844 }
 845
 846
 847 frontend::Selection & theSelection()
 848 {
 849         LASSERT(frontend::guiApp, /**/);
 850         return frontend::guiApp->selection();
 851 }
 852
 853 } // namespace lyx
 854
 855 #include "GuiApplication_moc.cpp"