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 "ColorCache.h"
  18 #include "GuiClipboard.h"
  19 #include "GuiImage.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiSelection.h"
  22 #include "GuiView.h"
  23 #include "Menus.h"
  24 #include "qt_helpers.h"
  25 #include "Toolbars.h"
  26
  27 #include "frontends/alert.h"
  28 #include "frontends/Application.h"
  29 #include "frontends/FontLoader.h"
  30 #include "frontends/FontMetrics.h"
  31
  32 #include "Buffer.h"
  33 #include "BufferList.h"
  34 #include "BufferView.h"
  35 #include "Color.h"
  36 #include "Font.h"
  37 #include "FuncRequest.h"
  38 #include "FuncStatus.h"
  39 #include "Language.h"
  40 #include "Lexer.h"
  41 #include "LyX.h"
  42 #include "LyXAction.h"
  43 #include "LyXFunc.h"
  44 #include "LyXRC.h"
  45 #include "Session.h"
  46 #include "version.h"
  47
  48 #include "support/lassert.h"
  49 #include "support/debug.h"
  50 #include "support/ExceptionMessage.h"
  51 #include "support/FileName.h"
  52 #include "support/foreach.h"
  53 #include "support/ForkedCalls.h"
  54 #include "support/gettext.h"
  55 #include "support/lstrings.h"
  56 #include "support/lyxalgo.h" // sorted
  57 #include "support/Messages.h"
  58 #include "support/os.h"
  59 #include "support/Package.h"
  60
  61 #ifdef Q_WS_MACX
  62 #include "support/linkback/LinkBackProxy.h"
  63 #endif
  64
  65 #include <QByteArray>
  66 #include <QClipboard>
  67 #include <QDateTime>
  68 #include <QDir>
  69 #include <QEventLoop>
  70 #include <QFileOpenEvent>
  71 #include <QFileInfo>
  72 #include <QHash>
  73 #include <QIcon>
  74 #include <QImageReader>
  75 #include <QLocale>
  76 #include <QLibraryInfo>
  77 #include <QList>
  78 #include <QMacPasteboardMime>
  79 #include <QMenuBar>
  80 #include <QMimeData>
  81 #include <QObject>
  82 #include <QPixmap>
  83 #include <QPixmapCache>
  84 #include <QRegExp>
  85 #include <QSessionManager>
  86 #include <QSettings>
  87 #include <QSocketNotifier>
  88 #include <QSortFilterProxyModel>
  89 #include <QStandardItemModel>
  90 #include <QTextCodec>
  91 #include <QTimer>
  92 #include <QTranslator>
  93 #include <QWidget>
  94
  95 #ifdef Q_WS_X11
  96 #include <X11/Xatom.h>
  97 #include <X11/Xlib.h>
  98 #undef CursorShape
  99 #undef None
 100 #endif
 101
 102 #ifdef Q_WS_WIN
 103 #include <QWindowsMime>
 104 #if defined(Q_CYGWIN_WIN) || defined(Q_CC_MINGW)
 105 #include <wtypes.h>
 106 #endif
 107 #include <objidl.h>
 108 #endif // Q_WS_WIN
 109
 110 #include <boost/bind.hpp>
 111 #include <boost/crc.hpp>
 112
 113 #include <exception>
 114 #include <vector>
 115
 116 using namespace std;
 117 using namespace lyx::support;
 118
 119
 120 static void initializeResources()
 121 {
 122         static bool initialized = false;
 123         if (!initialized) {
 124                 Q_INIT_RESOURCE(Resources);
 125                 initialized = true;
 126         }
 127 }
 128
 129
 130 namespace lyx {
 131
 132 frontend::Application * createApplication(int & argc, char * argv[])
 133 {
 134 #ifndef Q_WS_X11
 135         // prune -geometry argument(s) by shifting
 136         // the following ones 2 places down.
 137         for (int i = 0 ; i < argc ; ++i) {
 138                 if (argv[i] == "-geometry") {
 139                         int const remove = (i+1) < argc ? 2 : 1;
 140                         argc -= remove;
 141                         for (int j = i; j < argc; ++j)
 142                                 argv[j] = argv[j + remove];
 143                         --i;
 144                 }
 145         }
 146 #endif
 147         return new frontend::GuiApplication(argc, argv);
 148 }
 149
 150 namespace frontend {
 151
 152
 153 /// Return the list of loadable formats.
 154 vector<string> loadableImageFormats()
 155 {
 156         vector<string> fmts;
 157
 158         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 159
 160         LYXERR(Debug::GRAPHICS,
 161                 "\nThe image loader can load the following directly:\n");
 162
 163         if (qt_formats.empty())
 164                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 165
 166         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 167
 168                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 169
 170                 string ext = ascii_lowercase((const char *) *it);
 171                 // special case
 172                 if (ext == "jpeg")
 173                         ext = "jpg";
 174                 fmts.push_back(ext);
 175         }
 176
 177         return fmts;
 178 }
 179
 180 ////////////////////////////////////////////////////////////////////////
 181 // Icon loading support code.
 182 ////////////////////////////////////////////////////////////////////////
 183
 184 namespace {
 185
 186 struct PngMap {
 187         QString key;
 188         QString value;
 189 };
 190
 191
 192 bool operator<(PngMap const & lhs, PngMap const & rhs)
 193 {
 194         return lhs.key < rhs.key;
 195 }
 196
 197
 198 class CompareKey {
 199 public:
 200         CompareKey(QString const & name) : name_(name) {}
 201         bool operator()(PngMap const & other) const { return other.key == name_; }
 202 private:
 203         QString const name_;
 204 };
 205
 206
 207 // this must be sorted alphabetically
 208 // Upper case comes before lower case
 209 PngMap sorted_png_map[] = {
 210         { "Bumpeq", "bumpeq2" },
 211         { "Cap", "cap2" },
 212         { "Cup", "cup2" },
 213         { "Delta", "delta2" },
 214         { "Downarrow", "downarrow2" },
 215         { "Gamma", "gamma2" },
 216         { "Lambda", "lambda2" },
 217         { "Leftarrow", "leftarrow2" },
 218         { "Leftrightarrow", "leftrightarrow2" },
 219         { "Longleftarrow", "longleftarrow2" },
 220         { "Longleftrightarrow", "longleftrightarrow2" },
 221         { "Longrightarrow", "longrightarrow2" },
 222         { "Omega", "omega2" },
 223         { "Phi", "phi2" },
 224         { "Pi", "pi2" },
 225         { "Psi", "psi2" },
 226         { "Rightarrow", "rightarrow2" },
 227         { "Sigma", "sigma2" },
 228         { "Subset", "subset2" },
 229         { "Supset", "supset2" },
 230         { "Theta", "theta2" },
 231         { "Uparrow", "uparrow2" },
 232         { "Updownarrow", "updownarrow2" },
 233         { "Upsilon", "upsilon2" },
 234         { "Vdash", "vdash3" },
 235         { "Vert", "vert2" },
 236         { "Xi", "xi2" },
 237         { "nLeftarrow", "nleftarrow2" },
 238         { "nLeftrightarrow", "nleftrightarrow2" },
 239         { "nRightarrow", "nrightarrow2" },
 240         { "nVDash", "nvdash3" },
 241         { "nvDash", "nvdash2" },
 242         { "textrm \\AA", "textrm_AA"},
 243         { "textrm \\O", "textrm_O"},
 244         { "vDash", "vdash2" }
 245 };
 246
 247 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 248
 249
 250 QString findPng(QString const & name)
 251 {
 252         PngMap const * const begin = sorted_png_map;
 253         PngMap const * const end = begin + nr_sorted_png_map;
 254         LASSERT(sorted(begin, end), /**/);
 255
 256         PngMap const * const it = find_if(begin, end, CompareKey(name));
 257
 258         QString png_name;
 259         if (it != end) {
 260                 png_name = it->value;
 261         } else {
 262                 png_name = name;
 263                 png_name.replace('_', "underscore");
 264                 png_name.replace(' ', '_');
 265
 266                 // This way we can have "math-delim { }" on the toolbar.
 267                 png_name.replace('(', "lparen");
 268                 png_name.replace(')', "rparen");
 269                 png_name.replace('[', "lbracket");
 270                 png_name.replace(']', "rbracket");
 271                 png_name.replace('{', "lbrace");
 272                 png_name.replace('}', "rbrace");
 273                 png_name.replace('|', "bars");
 274                 png_name.replace(',', "thinspace");
 275                 png_name.replace(':', "mediumspace");
 276                 png_name.replace(';', "thickspace");
 277                 png_name.replace('!', "negthinspace");
 278         }
 279
 280         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 281                 << "Looking for math PNG called \"" << png_name << '"');
 282         return png_name;
 283 }
 284
 285 } // namespace anon
 286
 287
 288 QString iconName(FuncRequest const & f, bool unknown)
 289 {
 290         initializeResources();
 291         QString name1;
 292         QString name2;
 293         QString path;
 294         switch (f.action) {
 295         case LFUN_MATH_INSERT:
 296                 if (!f.argument().empty()) {
 297                         path = "math/";
 298                         name1 = findPng(toqstr(f.argument()).mid(1));
 299                 }
 300                 break;
 301         case LFUN_MATH_DELIM:
 302         case LFUN_MATH_BIGDELIM:
 303                 path = "math/";
 304                 name1 = findPng(toqstr(f.argument()));
 305                 break;
 306         case LFUN_CALL:
 307                 path = "commands/";
 308                 name1 = toqstr(f.argument());
 309                 break;
 310         default:
 311                 name2 = toqstr(lyxaction.getActionName(f.action));
 312                 name1 = name2;
 313
 314                 if (!f.argument().empty()) {
 315                         name1 = name2 + ' ' + toqstr(f.argument());
 316                         name1.replace(' ', '_');
 317                 }
 318         }
 319
 320         FileName fname = libFileSearch("images/" + path, name1, "png");
 321         if (fname.exists())
 322                 return toqstr(fname.absFilename());
 323
 324         fname = libFileSearch("images/" + path, name2, "png");
 325         if (fname.exists())
 326                 return toqstr(fname.absFilename());
 327
 328         path = ":/images/" + path;
 329         QDir res(path);
 330         if (!res.exists()) {
 331                 LYXERR0("Directory " << path << " not found in resource!");
 332                 return QString();
 333         }
 334         name1 += ".png";
 335         if (res.exists(name1))
 336                 return path + name1;
 337
 338         name2 += ".png";
 339         if (res.exists(name2))
 340                 return path + name2;
 341
 342         LYXERR(Debug::GUI, "Cannot find icon for command \""
 343                            << lyxaction.getActionName(f.action)
 344                            << '(' << to_utf8(f.argument()) << ")\"");
 345
 346         if (unknown)
 347                 return QString(":/images/unknown.png");
 348
 349         return QString();
 350 }
 351
 352
 353 QIcon getIcon(FuncRequest const & f, bool unknown)
 354 {
 355         QString icon = iconName(f, unknown);
 356         if (icon.isEmpty())
 357                 return QIcon();
 358
 359         //LYXERR(Debug::GUI, "Found icon: " << icon);
 360         QPixmap pm;
 361         if (!pm.load(icon)) {
 362                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 363                 return QIcon();
 364         }
 365
 366         return QIcon(pm);
 367 }
 368
 369
 370 ////////////////////////////////////////////////////////////////////////
 371 // LyX server support code.
 372 ////////////////////////////////////////////////////////////////////////
 373 class SocketNotifier : public QSocketNotifier
 374 {
 375 public:
 376         /// connect a connection notification from the LyXServerSocket
 377         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 378                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 379         {}
 380
 381 public:
 382         /// The callback function
 383         Application::SocketCallback func_;
 384 };
 385
 386
 387 ////////////////////////////////////////////////////////////////////////
 388 // Mac specific stuff goes here...
 389 ////////////////////////////////////////////////////////////////////////
 390
 391 class MenuTranslator : public QTranslator
 392 {
 393 public:
 394         MenuTranslator(QObject * parent)
 395                 : QTranslator(parent)
 396         {}
 397
 398         QString translate(const char * /*context*/,
 399           const char * sourceText,
 400           const char * /*comment*/ = 0)
 401         {
 402                 string const s = sourceText;
 403                 if (s == N_("About %1") || s == N_("Preferences")
 404                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 405                         return qt_(s);
 406                 else
 407                         return QString();
 408         }
 409 };
 410
 411 class GlobalMenuBar : public QMenuBar
 412 {
 413 public:
 414         ///
 415         GlobalMenuBar() : QMenuBar(0) {}
 416
 417         ///
 418         bool event(QEvent * e)
 419         {
 420                 if (e->type() == QEvent::ShortcutOverride) {
 421                         //          && activeWindow() == 0) {
 422                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 423                         KeySymbol sym;
 424                         setKeySymbol(&sym, ke);
 425                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 426                         e->accept();
 427                         return true;
 428                 }
 429                 return false;
 430         }
 431 };
 432
 433 #ifdef Q_WS_MACX
 434 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 435
 436 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 437 {
 438 public:
 439         QMacPasteboardMimeGraphics()
 440                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 441         {}
 442
 443         QString convertorName() { return "Graphics"; }
 444
 445         QString flavorFor(QString const & mime)
 446         {
 447                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 448                 if (mime == pdfMimeType())
 449                         return QLatin1String("com.adobe.pdf");
 450                 return QString();
 451         }
 452
 453         QString mimeFor(QString flav)
 454         {
 455                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 456                 if (flav == QLatin1String("com.adobe.pdf"))
 457                         return pdfMimeType();
 458                 return QString();
 459         }
 460
 461         bool canConvert(QString const & mime, QString flav)
 462         {
 463                 return mimeFor(flav) == mime;
 464         }
 465
 466         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 467                 QString /*flav*/)
 468         {
 469                 if(data.count() > 1)
 470                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 471                 return data.first();
 472         }
 473
 474         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 475                 QVariant data, QString /*flav*/)
 476         {
 477                 QList<QByteArray> ret;
 478                 ret.append(data.toByteArray());
 479                 return ret;
 480         }
 481 };
 482 #endif
 483
 484 ///////////////////////////////////////////////////////////////
 485 // You can find more platform specific stuff
 486 // at the end of this file...
 487 ///////////////////////////////////////////////////////////////
 488
 489 ////////////////////////////////////////////////////////////////////////
 490 // Windows specific stuff goes here...
 491
 492 #ifdef Q_WS_WIN
 493 // QWindowsMimeMetafile can only be compiled on Windows.
 494
 495 static FORMATETC cfFromMime(QString const & mimetype)
 496 {
 497         FORMATETC formatetc;
 498         if (mimetype == emfMimeType()) {
 499                 formatetc.cfFormat = CF_ENHMETAFILE;
 500                 formatetc.tymed = TYMED_ENHMF;
 501         } else if (mimetype == wmfMimeType()) {
 502                 formatetc.cfFormat = CF_METAFILEPICT;
 503                 formatetc.tymed = TYMED_MFPICT;
 504         }
 505         formatetc.ptd = 0;
 506         formatetc.dwAspect = DVASPECT_CONTENT;
 507         formatetc.lindex = -1;
 508         return formatetc;
 509 }
 510
 511
 512 class QWindowsMimeMetafile : public QWindowsMime {
 513 public:
 514         QWindowsMimeMetafile() {}
 515
 516         bool canConvertFromMime(FORMATETC const & formatetc,
 517                 QMimeData const * mimedata) const
 518         {
 519                 return false;
 520         }
 521
 522         bool canConvertToMime(QString const & mimetype,
 523                 IDataObject * pDataObj) const
 524         {
 525                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 526                         return false;
 527                 FORMATETC formatetc = cfFromMime(mimetype);
 528                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 529         }
 530
 531         bool convertFromMime(FORMATETC const & formatetc,
 532                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 533         {
 534                 return false;
 535         }
 536
 537         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 538                 QVariant::Type preferredType) const
 539         {
 540                 QByteArray data;
 541                 if (!canConvertToMime(mimetype, pDataObj))
 542                         return data;
 543
 544                 FORMATETC formatetc = cfFromMime(mimetype);
 545                 STGMEDIUM s;
 546                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 547                         return data;
 548
 549                 int dataSize;
 550                 if (s.tymed == TYMED_ENHMF) {
 551                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 552                         data.resize(dataSize);
 553                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 554                                 (LPBYTE)data.data());
 555                 } else if (s.tymed == TYMED_MFPICT) {
 556                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 557                         data.resize(dataSize);
 558                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 559                                 (LPBYTE)data.data());
 560                 }
 561                 data.detach();
 562                 ReleaseStgMedium(&s);
 563
 564                 return data;
 565         }
 566
 567
 568         QVector<FORMATETC> formatsForMime(QString const & mimeType,
 569                 QMimeData const * mimeData) const
 570         {
 571                 QVector<FORMATETC> formats;
 572                 formats += cfFromMime(mimeType);
 573                 return formats;
 574         }
 575
 576         QString mimeForFormat(FORMATETC const & formatetc) const
 577         {
 578                 switch (formatetc.cfFormat) {
 579                 case CF_ENHMETAFILE:
 580                         return emfMimeType();
 581                 case CF_METAFILEPICT:
 582                         return wmfMimeType();
 583                 }
 584                 return QString();
 585         }
 586 };
 587
 588 #endif // Q_WS_WIN
 589
 590 ////////////////////////////////////////////////////////////////////////
 591 // GuiApplication::Private definition and implementation.
 592 ////////////////////////////////////////////////////////////////////////
 593
 594 struct GuiApplication::Private
 595 {
 596         Private()
 597                 : language_model_(0), global_menubar_(0)
 598         {
 599 #ifdef Q_WS_MACX
 600                 // Create the global default menubar which is shown for the dialogs
 601                 // and if no GuiView is visible.
 602                 global_menubar_ = new GlobalMenuBar();
 603 #endif
 604         }
 605
 606         ///
 607         QSortFilterProxyModel * language_model_;
 608         ///
 609         GuiClipboard clipboard_;
 610         ///
 611         GuiSelection selection_;
 612         ///
 613         FontLoader font_loader_;
 614         ///
 615         ColorCache color_cache_;
 616         ///
 617         QTranslator qt_trans_;
 618         ///
 619         QHash<int, SocketNotifier *> socket_notifiers_;
 620         ///
 621         Menus menus_;
 622         ///
 623         /// The global instance
 624         Toolbars toolbars_;
 625
 626         /// this timer is used for any regular events one wants to
 627         /// perform. at present it is used to check if forked processes
 628         /// are done.
 629         QTimer general_timer_;
 630
 631         /// Multiple views container.
 632         /**
 633         * Warning: This must not be a smart pointer as the destruction of the
 634         * object is handled by Qt when the view is closed
 635         * \sa Qt::WA_DeleteOnClose attribute.
 636         */
 637         QHash<int, GuiView *> views_;
 638
 639         /// Only used on mac.
 640         GlobalMenuBar * global_menubar_;
 641
 642 #ifdef Q_WS_MACX
 643         /// Linkback mime handler for MacOSX.
 644         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 645 #endif
 646
 647 #ifdef Q_WS_WIN
 648         /// WMF Mime handler for Windows clipboard.
 649         /// \warning: see comment in ~GuiApplication and in bug 4846.
 650         QWindowsMimeMetafile wmf_mime_;
 651 #endif
 652 };
 653
 654
 655 GuiApplication * guiApp;
 656
 657 GuiApplication::~GuiApplication()
 658 {
 659 #ifdef Q_WS_MACX
 660         closeAllLinkBackLinks();
 661 #endif
 662         // FIXME: Work around bug 4846 for Windows Vista and Qt4
 663         // (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 664         // If the clipboard is not cleared, LyX crashes on exit when it is
 665         // compiled in release mode and if there is something in the clipboard.
 666         // This is related to QWindowsMimeMetafile which is apparently not
 667         // properly destroyed.
 668         qApp->clipboard()->clear(QClipboard::Clipboard);
 669         delete d;
 670 }
 671
 672
 673 GuiApplication::GuiApplication(int & argc, char ** argv)
 674         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 675 {
 676         QString app_name = "LyX";
 677         QCoreApplication::setOrganizationName(app_name);
 678         QCoreApplication::setOrganizationDomain("lyx.org");
 679         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 680
 681         // Install translator for GUI elements.
 682         installTranslator(&d->qt_trans_);
 683
 684         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 685         // lyxrc setting for this in order to let the application stay resident.
 686         // But then we need some kind of dock icon, at least on Windows.
 687         /*
 688         if (lyxrc.quit_on_last_window_closed)
 689                 setQuitOnLastWindowClosed(false);
 690         */
 691 #ifdef Q_WS_MACX
 692         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 693         // seems to be the default case for applications like LyX.
 694         setQuitOnLastWindowClosed(false);
 695
 696         // This allows to translate the strings that appear in the LyX menu.
 697         /// A translator suitable for the entries in the LyX menu.
 698         /// Only needed with Qt/Mac.
 699         installTranslator(new MenuTranslator(this));
 700 #endif
 701
 702 #ifdef Q_WS_X11
 703         // doubleClickInterval() is 400 ms on X11 which is just too long.
 704         // On Windows and Mac OS X, the operating system's value is used.
 705         // On Microsoft Windows, calling this function sets the double
 706         // click interval for all applications. So we don't!
 707         QApplication::setDoubleClickInterval(300);
 708 #endif
 709
 710         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 711
 712         // needs to be done before reading lyxrc
 713         QWidget w;
 714         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 715
 716         guiApp = this;
 717
 718         // Set the cache to 5120 kilobytes which corresponds to screen size of
 719         // 1280 by 1024 pixels with a color depth of 32 bits.
 720         QPixmapCache::setCacheLimit(5120);
 721
 722         // Initialize RC Fonts
 723         if (lyxrc.roman_font_name.empty())
 724                 lyxrc.roman_font_name = fromqstr(romanFontName());
 725
 726         if (lyxrc.sans_font_name.empty())
 727                 lyxrc.sans_font_name = fromqstr(sansFontName());
 728
 729         if (lyxrc.typewriter_font_name.empty())
 730                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 731
 732         d->general_timer_.setInterval(500);
 733         connect(&d->general_timer_, SIGNAL(timeout()),
 734                 this, SLOT(handleRegularEvents()));
 735         d->general_timer_.start();
 736 }
 737
 738
 739 void GuiApplication::clearSession()
 740 {
 741         QSettings settings;
 742         settings.clear();
 743 }
 744
 745
 746 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 747 {
 748         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 749 }
 750
 751
 752
 753 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 754 {
 755         bool enable = true;
 756
 757         switch(cmd.action) {
 758
 759         case LFUN_WINDOW_CLOSE:
 760                 enable = d->views_.size() > 0;
 761                 break;
 762
 763         case LFUN_BUFFER_NEW:
 764         case LFUN_BUFFER_NEW_TEMPLATE:
 765         case LFUN_FILE_OPEN:
 766         case LFUN_SCREEN_FONT_UPDATE:
 767         case LFUN_SET_COLOR:
 768         case LFUN_WINDOW_NEW:
 769         case LFUN_LYX_QUIT:
 770                 enable = true;
 771                 break;
 772
 773         default:
 774                 return false;
 775         }
 776
 777         if (!enable)
 778                 flag.setEnabled(false);
 779
 780         return true;
 781 }
 782
 783
 784 bool GuiApplication::dispatch(FuncRequest const & cmd)
 785 {
 786         switch (cmd.action) {
 787
 788         case LFUN_WINDOW_NEW:
 789                 createView(toqstr(cmd.argument()));
 790                 break;
 791
 792         case LFUN_WINDOW_CLOSE:
 793                 // update bookmark pit of the current buffer before window close
 794                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 795                         theLyXFunc().gotoBookmark(i+1, false, false);
 796                 current_view_->close();
 797                 break;
 798
 799         case LFUN_LYX_QUIT:
 800                 // quitting is triggered by the gui code
 801                 // (leaving the event loop).
 802                 if (current_view_)
 803                         current_view_->message(from_utf8(N_("Exiting.")));
 804                 if (closeAllViews())
 805                         quit();
 806                 break;
 807
 808         case LFUN_SCREEN_FONT_UPDATE: {
 809                 // handle the screen font changes.
 810                 d->font_loader_.update();
 811                 // Backup current_view_
 812                 GuiView * view = current_view_;
 813                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 814                 // to skip the refresh.
 815                 current_view_ = 0;
 816                 BufferList::iterator it = theBufferList().begin();
 817                 BufferList::iterator const end = theBufferList().end();
 818                 for (; it != end; ++it)
 819                         (*it)->changed();
 820                 // Restore current_view_
 821                 current_view_ = view;
 822                 break;
 823         }
 824
 825         case LFUN_BUFFER_NEW:
 826                 if (d->views_.empty()
 827                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 828                         createView(QString(), false); // keep hidden
 829                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 830                         current_view_->show();
 831                         setActiveWindow(current_view_);
 832                 } else {
 833                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 834                 }
 835                 break;
 836
 837         case LFUN_BUFFER_NEW_TEMPLATE:
 838                 if (d->views_.empty()
 839                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 840                         createView();
 841                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 842                         if (!current_view_->buffer())
 843                                 current_view_->close();
 844                 } else {
 845                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 846                 }
 847                 break;
 848
 849         case LFUN_FILE_OPEN:
 850                 if (d->views_.empty()
 851                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 852                         string const fname = to_utf8(cmd.argument());
 853                         // We want the ui session to be saved per document and not per
 854                         // window number. The filename crc is a good enough identifier.
 855                         boost::crc_32_type crc;
 856                         crc = for_each(fname.begin(), fname.end(), crc);
 857                         createView(crc.checksum());
 858                         current_view_->openDocument(fname);
 859                         if (!current_view_->buffer())
 860                                 current_view_->close();
 861                 } else
 862                         current_view_->openDocument(to_utf8(cmd.argument()));
 863                 break;
 864
 865         case LFUN_SET_COLOR: {
 866                 string lyx_name;
 867                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 868                 if (lyx_name.empty() || x11_name.empty()) {
 869                         current_view_->message(
 870                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 871                         break;
 872                 }
 873
 874                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 875                 bool const graphicsbg_changed = lyx_name == graphicsbg
 876                         && x11_name != graphicsbg;
 877                 if (graphicsbg_changed) {
 878                         // FIXME: The graphics cache no longer has a changeDisplay method.
 879 #if 0
 880                         graphics::GCache::get().changeDisplay(true);
 881 #endif
 882                 }
 883
 884                 if (!lcolor.setColor(lyx_name, x11_name)) {
 885                         current_view_->message(
 886                                         bformat(_("Set-color \"%1$s\" failed "
 887                                                                "- color is undefined or "
 888                                                                "may not be redefined"),
 889                                                                    from_utf8(lyx_name)));
 890                         break;
 891                 }
 892                 // Make sure we don't keep old colors in cache.
 893                 d->color_cache_.clear();
 894                 break;
 895         }
 896
 897         default:
 898                 // Notify the caller that the action has not been dispatched.
 899                 return false;
 900         }
 901
 902         // The action has been dispatched.
 903         return true;
 904 }
 905
 906
 907 void GuiApplication::resetGui()
 908 {
 909         // Set the language defined by the user.
 910         setGuiLanguage();
 911
 912         // Read menus
 913         if (!readUIFile(toqstr(lyxrc.ui_file)))
 914                 // Gives some error box here.
 915                 return;
 916
 917 #ifdef Q_WS_MACX
 918         d->global_menubar_->clear();
 919         delete d->global_menubar_;
 920         // Create the global default menubar which is shown for the dialogs
 921         // and if no GuiView is visible.
 922         d->global_menubar_ = new GlobalMenuBar();
 923
 924         // init the global menubar on Mac. This must be done after the session
 925         // was recovered to know the "last files".
 926         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
 927 #endif
 928
 929         QHash<int, GuiView *>::iterator it;
 930         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 931                 GuiView * gv = *it;
 932                 gv->setLayoutDirection(layoutDirection());
 933                 gv->resetDialogs();
 934         }
 935
 936         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 937 }
 938
 939
 940 void GuiApplication::createView(int view_id)
 941 {
 942         createView(QString(), true, view_id);
 943 }
 944
 945
 946 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 947         int view_id)
 948 {
 949         // release the keyboard which might have been grabed by the global
 950         // menubar on Mac to catch shortcuts even without any GuiView.
 951         if (d->global_menubar_)
 952                 d->global_menubar_->releaseKeyboard();
 953
 954         // create new view
 955         int id = view_id;
 956         if (id == 0) {
 957                 while (d->views_.find(id) != d->views_.end())
 958                         id++;
 959         }
 960         LYXERR(Debug::GUI, "About to create new window with ID " << id);
 961         GuiView * view = new GuiView(id);
 962         // register view
 963         d->views_[id] = view;
 964
 965         if (autoShow) {
 966                 view->show();
 967                 setActiveWindow(view);
 968         }
 969
 970         if (!geometry_arg.isEmpty()) {
 971 #ifdef Q_WS_WIN
 972                 int x, y;
 973                 int w, h;
 974                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 975                 re.indexIn(geometry_arg);
 976                 w = re.cap(1).toInt();
 977                 h = re.cap(2).toInt();
 978                 x = re.cap(3).toInt();
 979                 y = re.cap(4).toInt();
 980                 view->setGeometry(x, y, w, h);
 981 #endif
 982         }
 983         view->setFocus();
 984 }
 985
 986
 987 Clipboard & GuiApplication::clipboard()
 988 {
 989         return d->clipboard_;
 990 }
 991
 992
 993 Selection & GuiApplication::selection()
 994 {
 995         return d->selection_;
 996 }
 997
 998
 999 FontLoader & GuiApplication::fontLoader()
1000 {
1001         return d->font_loader_;
1002 }
1003
1004
1005 Toolbars const & GuiApplication::toolbars() const
1006 {
1007         return d->toolbars_;
1008 }
1009
1010
1011 Toolbars & GuiApplication::toolbars()
1012 {
1013         return d->toolbars_;
1014 }
1015
1016
1017 Menus const & GuiApplication::menus() const
1018 {
1019         return d->menus_;
1020 }
1021
1022
1023 Menus & GuiApplication::menus()
1024 {
1025         return d->menus_;
1026 }
1027
1028
1029 QList<int> GuiApplication::viewIds() const
1030 {
1031         return d->views_.keys();
1032 }
1033
1034
1035 ColorCache & GuiApplication::colorCache()
1036 {
1037         return d->color_cache_;
1038 }
1039
1040
1041 int GuiApplication::exec()
1042 {
1043         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
1044         return QApplication::exec();
1045 }
1046
1047
1048 void GuiApplication::exit(int status)
1049 {
1050         QApplication::exit(status);
1051 }
1052
1053
1054 void GuiApplication::setGuiLanguage()
1055 {
1056         // Set the language defined by the user.
1057         setRcGuiLanguage();
1058
1059         QString const default_language = toqstr(Messages::defaultLanguage());
1060         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1061         QLocale const default_locale(default_language);
1062         QLocale::setDefault(default_locale);
1063
1064         // install translation file for Qt built-in dialogs
1065         QString const language_name = QString("qt_") + default_locale.name();
1066
1067         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1068         // Short-named translator can be loaded from a long name, but not the
1069         // opposite. Therefore, long name should be used without truncation.
1070         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1071         if (!d->qt_trans_.load(language_name,
1072                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1073                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1074                         << language_name);
1075         } else {
1076                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1077                         << language_name);
1078         }
1079
1080         switch (default_locale.language()) {
1081         case QLocale::Arabic :
1082         case QLocale::Hebrew :
1083         case QLocale::Persian :
1084         case QLocale::Urdu :
1085         setLayoutDirection(Qt::RightToLeft);
1086                 break;
1087         default:
1088         setLayoutDirection(Qt::LeftToRight);
1089         }
1090 }
1091
1092
1093 void GuiApplication::execBatchCommands()
1094 {
1095         setGuiLanguage();
1096
1097         // Read menus
1098         if (!readUIFile(toqstr(lyxrc.ui_file)))
1099                 // Gives some error box here.
1100                 return;
1101
1102         // init the global menubar on Mac. This must be done after the session
1103         // was recovered to know the "last files".
1104         if (d->global_menubar_)
1105                 d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1106
1107         lyx::execBatchCommands();
1108 }
1109
1110
1111 QAbstractItemModel * GuiApplication::languageModel()
1112 {
1113         if (d->language_model_)
1114                 return d->language_model_;
1115
1116         QStandardItemModel * lang_model = new QStandardItemModel(this);
1117         lang_model->insertColumns(0, 1);
1118         int current_row;
1119         Languages::const_iterator it = languages.begin();
1120         Languages::const_iterator end = languages.end();
1121         for (; it != end; ++it) {
1122                 current_row = lang_model->rowCount();
1123                 lang_model->insertRows(current_row, 1);
1124                 QModelIndex item = lang_model->index(current_row, 0);
1125                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1126                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1127         }
1128         d->language_model_ = new QSortFilterProxyModel(this);
1129         d->language_model_->setSourceModel(lang_model);
1130 #if QT_VERSION >= 0x040300
1131         d->language_model_->setSortLocaleAware(true);
1132 #endif
1133         return d->language_model_;
1134 }
1135
1136
1137 void GuiApplication::restoreGuiSession()
1138 {
1139         if (!lyxrc.load_session)
1140                 return;
1141
1142         Session & session = theSession();
1143         vector<FileName> const & lastopened = session.lastOpened().getfiles();
1144         // do not add to the lastfile list since these files are restored from
1145         // last session, and should be already there (regular files), or should
1146         // not be added at all (help files).
1147         for_each(lastopened.begin(), lastopened.end(),
1148                 bind(&GuiView::loadDocument, current_view_, _1, false));
1149
1150         // clear this list to save a few bytes of RAM
1151         session.lastOpened().clear();
1152 }
1153
1154
1155 QString const GuiApplication::romanFontName()
1156 {
1157         QFont font;
1158         font.setKerning(false);
1159         font.setStyleHint(QFont::Serif);
1160         font.setFamily("serif");
1161
1162         return QFontInfo(font).family();
1163 }
1164
1165
1166 QString const GuiApplication::sansFontName()
1167 {
1168         QFont font;
1169         font.setKerning(false);
1170         font.setStyleHint(QFont::SansSerif);
1171         font.setFamily("sans");
1172
1173         return QFontInfo(font).family();
1174 }
1175
1176
1177 QString const GuiApplication::typewriterFontName()
1178 {
1179         QFont font;
1180         font.setKerning(false);
1181         font.setStyleHint(QFont::TypeWriter);
1182         font.setFamily("monospace");
1183
1184         return QFontInfo(font).family();
1185 }
1186
1187
1188 void GuiApplication::handleRegularEvents()
1189 {
1190         ForkedCallsController::handleCompletedProcesses();
1191 }
1192
1193
1194 bool GuiApplication::event(QEvent * e)
1195 {
1196         switch(e->type()) {
1197         case QEvent::FileOpen: {
1198                 // Open a file; this happens only on Mac OS X for now
1199                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1200                 lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
1201                         qstring_to_ucs4(foe->file())));
1202                 e->accept();
1203                 return true;
1204         }
1205         default:
1206                 return QApplication::event(e);
1207         }
1208 }
1209
1210
1211 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1212 {
1213         try {
1214                 return QApplication::notify(receiver, event);
1215         }
1216         catch (ExceptionMessage const & e) {
1217                 switch(e.type_) {
1218                 case ErrorException:
1219                         emergencyCleanup();
1220                         setQuitOnLastWindowClosed(false);
1221                         closeAllViews();
1222                         Alert::error(e.title_, e.details_);
1223 #ifndef NDEBUG
1224                         // Properly crash in debug mode in order to get a useful backtrace.
1225                         abort();
1226 #endif
1227                         // In release mode, try to exit gracefully.
1228                         this->exit(1);
1229
1230                 case BufferException: {
1231                         Buffer * buf = current_view_->buffer();
1232                         docstring details = e.details_ + '\n';
1233                         details += theBufferList().emergencyWrite(buf);
1234                         theBufferList().release(buf);
1235                         details += "\n" + _("The current document was closed.");
1236                         Alert::error(e.title_, details);
1237                         return false;
1238                 }
1239                 case WarningException:
1240                         Alert::warning(e.title_, e.details_);
1241                         return false;
1242                 }
1243         }
1244         catch (exception const & e) {
1245                 docstring s = _("LyX has caught an exception, it will now "
1246                         "attempt to save all unsaved documents and exit."
1247                         "\n\nException: ");
1248                 s += from_ascii(e.what());
1249                 Alert::error(_("Software exception Detected"), s);
1250                 lyx_exit(1);
1251         }
1252         catch (...) {
1253                 docstring s = _("LyX has caught some really weird exception, it will "
1254                         "now attempt to save all unsaved documents and exit.");
1255                 Alert::error(_("Software exception Detected"), s);
1256                 lyx_exit(1);
1257         }
1258
1259         return false;
1260 }
1261
1262
1263 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1264 {
1265         QColor const & qcol = d->color_cache_.get(col);
1266         if (!qcol.isValid()) {
1267                 rgbcol.r = 0;
1268                 rgbcol.g = 0;
1269                 rgbcol.b = 0;
1270                 return false;
1271         }
1272         rgbcol.r = qcol.red();
1273         rgbcol.g = qcol.green();
1274         rgbcol.b = qcol.blue();
1275         return true;
1276 }
1277
1278
1279 string const GuiApplication::hexName(ColorCode col)
1280 {
1281         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1282 }
1283
1284
1285 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1286 {
1287         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1288         d->socket_notifiers_[fd] = sn;
1289         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1290 }
1291
1292
1293 void GuiApplication::socketDataReceived(int fd)
1294 {
1295         d->socket_notifiers_[fd]->func_();
1296 }
1297
1298
1299 void GuiApplication::unregisterSocketCallback(int fd)
1300 {
1301         d->socket_notifiers_.take(fd)->setEnabled(false);
1302 }
1303
1304
1305 void GuiApplication::commitData(QSessionManager & sm)
1306 {
1307         /// The implementation is required to avoid an application exit
1308         /// when session state save is triggered by session manager.
1309         /// The default implementation sends a close event to all
1310         /// visible top level widgets when session managment allows
1311         /// interaction.
1312         /// We are changing that to close all wiew one by one.
1313         /// FIXME: verify if the default implementation is enough now.
1314         if (sm.allowsInteraction() && !closeAllViews())
1315                 sm.cancel();
1316 }
1317
1318
1319 void GuiApplication::unregisterView(GuiView * gv)
1320 {
1321         LASSERT(d->views_[gv->id()] == gv, /**/);
1322         d->views_.remove(gv->id());
1323         if (current_view_ == gv) {
1324                 current_view_ = 0;
1325                 theLyXFunc().setLyXView(0);
1326         }
1327 }
1328
1329
1330 bool GuiApplication::closeAllViews()
1331 {
1332         if (d->views_.empty())
1333                 return true;
1334
1335         QList<GuiView *> views = d->views_.values();
1336         foreach (GuiView * view, views) {
1337                 if (!view->close())
1338                         return false;
1339         }
1340
1341         d->views_.clear();
1342         return true;
1343 }
1344
1345
1346 GuiView & GuiApplication::view(int id) const
1347 {
1348         LASSERT(d->views_.contains(id), /**/);
1349         return *d->views_.value(id);
1350 }
1351
1352
1353 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1354 {
1355         QList<GuiView *> views = d->views_.values();
1356         foreach (GuiView * view, views)
1357                 view->hideDialog(name, inset);
1358 }
1359
1360
1361 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1362 {
1363         Buffer const * buffer_ = 0;
1364         QHash<int, GuiView *>::iterator end = d->views_.end();
1365         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1366                 if (Buffer const * ptr = (*it)->updateInset(inset))
1367                         buffer_ = ptr;
1368         }
1369         return buffer_;
1370 }
1371
1372
1373 bool GuiApplication::searchMenu(FuncRequest const & func,
1374         docstring_list & names) const
1375 {
1376         return d->menus_.searchMenu(func, names);
1377 }
1378
1379
1380 bool GuiApplication::readUIFile(QString const & name, bool include)
1381 {
1382         enum {
1383                 ui_menuset = 1,
1384                 ui_toolbars,
1385                 ui_toolbarset,
1386                 ui_include,
1387                 ui_last
1388         };
1389
1390         LexerKeyword uitags[] = {
1391                 { "include", ui_include },
1392                 { "menuset", ui_menuset },
1393                 { "toolbars", ui_toolbars },
1394                 { "toolbarset", ui_toolbarset }
1395         };
1396
1397         LYXERR(Debug::INIT, "About to read " << name << "...");
1398
1399         FileName ui_path;
1400         if (include) {
1401                 ui_path = libFileSearch("ui", name, "inc");
1402                 if (ui_path.empty())
1403                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1404         } else {
1405                 ui_path = libFileSearch("ui", name, "ui");
1406         }
1407
1408         if (ui_path.empty()) {
1409                 LYXERR(Debug::INIT, "Could not find " << name);
1410                 Alert::warning(_("Could not find UI definition file"),
1411                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1412                                    "Please check your installation."), qstring_to_ucs4(name)));
1413                 return false;
1414         }
1415
1416
1417         // Ensure that a file is read only once (prevents include loops)
1418         static QStringList uifiles;
1419         QString const uifile = toqstr(ui_path.absFilename());
1420         if (uifiles.contains(uifile)) {
1421                 if (!include) {
1422                         // We are reading again the top uifile so reset the safeguard:
1423                         uifiles.clear();
1424                         d->menus_.reset();
1425                         d->toolbars_.reset();
1426                 } else {
1427                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1428                                 << "Is this an include loop?");
1429                         return false;
1430                 }
1431         }
1432         uifiles.push_back(uifile);
1433
1434         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1435
1436         Lexer lex(uitags);
1437         lex.setFile(ui_path);
1438         if (!lex.isOK()) {
1439                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1440                        << endl;
1441         }
1442
1443         if (lyxerr.debugging(Debug::PARSER))
1444                 lex.printTable(lyxerr);
1445
1446         while (lex.isOK()) {
1447                 switch (lex.lex()) {
1448                 case ui_include: {
1449                         lex.next(true);
1450                         QString const file = toqstr(lex.getString());
1451                         if (!readUIFile(file, true))
1452                                 return false;
1453                         break;
1454                 }
1455                 case ui_menuset:
1456                         d->menus_.read(lex);
1457                         break;
1458
1459                 case ui_toolbarset:
1460                         d->toolbars_.readToolbars(lex);
1461                         break;
1462
1463                 case ui_toolbars:
1464                         d->toolbars_.readToolbarSettings(lex);
1465                         break;
1466
1467                 default:
1468                         if (!rtrim(lex.getString()).empty())
1469                                 lex.printError("LyX::ReadUIFile: "
1470                                                "Unknown menu tag: `$$Token'");
1471                         break;
1472                 }
1473         }
1474
1475         if (include)
1476                 return true;
1477
1478         QSettings settings;
1479         settings.beginGroup("ui_files");
1480         bool touched = false;
1481         for (int i = 0; i != uifiles.size(); ++i) {
1482                 QFileInfo fi(uifiles[i]);
1483                 QDateTime const date_value = fi.lastModified();
1484                 QString const name_key = QString::number(i);
1485                 if (!settings.contains(name_key)
1486                  || settings.value(name_key).toString() != uifiles[i]
1487                  || settings.value(name_key + "/date").toDateTime() != date_value) {
1488                         touched = true;
1489                         settings.setValue(name_key, uifiles[i]);
1490                         settings.setValue(name_key + "/date", date_value);
1491                 }
1492         }
1493         settings.endGroup();
1494         if (touched)
1495                 settings.remove("views");
1496
1497         return true;
1498 }
1499
1500
1501 void GuiApplication::onLastWindowClosed()
1502 {
1503         if (d->global_menubar_)
1504                 d->global_menubar_->grabKeyboard();
1505 }
1506
1507
1508 ////////////////////////////////////////////////////////////////////////
1509 //
1510 // X11 specific stuff goes here...
1511
1512 #ifdef Q_WS_X11
1513 bool GuiApplication::x11EventFilter(XEvent * xev)
1514 {
1515         if (!current_view_)
1516                 return false;
1517
1518         switch (xev->type) {
1519         case SelectionRequest: {
1520                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1521                         break;
1522                 LYXERR(Debug::SELECTION, "X requested selection.");
1523                 BufferView * bv = current_view_->view();
1524                 if (bv) {
1525                         docstring const sel = bv->requestSelection();
1526                         if (!sel.empty())
1527                                 d->selection_.put(sel);
1528                 }
1529                 break;
1530         }
1531         case SelectionClear: {
1532                 if (xev->xselectionclear.selection != XA_PRIMARY)
1533                         break;
1534                 LYXERR(Debug::SELECTION, "Lost selection.");
1535                 BufferView * bv = current_view_->view();
1536                 if (bv)
1537                         bv->clearSelection();
1538                 break;
1539         }
1540         }
1541         return false;
1542 }
1543 #endif
1544
1545 } // namespace frontend
1546
1547
1548 void hideDialogs(std::string const & name, Inset * inset)
1549 {
1550         if (theApp())
1551                 theApp()->hideDialogs(name, inset);
1552 }
1553
1554
1555 ////////////////////////////////////////////////////////////////////
1556 //
1557 // Font stuff
1558 //
1559 ////////////////////////////////////////////////////////////////////
1560
1561 frontend::FontLoader & theFontLoader()
1562 {
1563         LASSERT(frontend::guiApp, /**/);
1564         return frontend::guiApp->fontLoader();
1565 }
1566
1567
1568 frontend::FontMetrics const & theFontMetrics(Font const & f)
1569 {
1570         return theFontMetrics(f.fontInfo());
1571 }
1572
1573
1574 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1575 {
1576         LASSERT(frontend::guiApp, /**/);
1577         return frontend::guiApp->fontLoader().metrics(f);
1578 }
1579
1580
1581 ////////////////////////////////////////////////////////////////////
1582 //
1583 // Misc stuff
1584 //
1585 ////////////////////////////////////////////////////////////////////
1586
1587 frontend::Clipboard & theClipboard()
1588 {
1589         LASSERT(frontend::guiApp, /**/);
1590         return frontend::guiApp->clipboard();
1591 }
1592
1593
1594 frontend::Selection & theSelection()
1595 {
1596         LASSERT(frontend::guiApp, /**/);
1597         return frontend::guiApp->selection();
1598 }
1599
1600 } // namespace lyx
1601
1602 #include "GuiApplication_moc.cpp"