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 <queue>
  66
  67 #include <QByteArray>
  68 #include <QClipboard>
  69 #include <QDateTime>
  70 #include <QDir>
  71 #include <QEventLoop>
  72 #include <QFileOpenEvent>
  73 #include <QFileInfo>
  74 #include <QHash>
  75 #include <QIcon>
  76 #include <QImageReader>
  77 #include <QLocale>
  78 #include <QLibraryInfo>
  79 #include <QList>
  80 #include <QMacPasteboardMime>
  81 #include <QMenuBar>
  82 #include <QMimeData>
  83 #include <QObject>
  84 #include <QPixmap>
  85 #include <QPixmapCache>
  86 #include <QRegExp>
  87 #include <QSessionManager>
  88 #include <QSettings>
  89 #include <QSocketNotifier>
  90 #include <QSortFilterProxyModel>
  91 #include <QStandardItemModel>
  92 #include <QTextCodec>
  93 #include <QTimer>
  94 #include <QTranslator>
  95 #include <QWidget>
  96
  97 #ifdef Q_WS_X11
  98 #include <X11/Xatom.h>
  99 #include <X11/Xlib.h>
 100 #undef CursorShape
 101 #undef None
 102 #endif
 103
 104 #ifdef Q_WS_WIN
 105 #include <QWindowsMime>
 106 #ifdef Q_CC_GNU
 107 #include <wtypes.h>
 108 #endif
 109 #include <objidl.h>
 110 #endif // Q_WS_WIN
 111
 112 #include <boost/bind.hpp>
 113 #include <boost/crc.hpp>
 114
 115 #include <exception>
 116 #include <vector>
 117
 118 using namespace std;
 119 using namespace lyx::support;
 120
 121
 122 static void initializeResources()
 123 {
 124         static bool initialized = false;
 125         if (!initialized) {
 126                 Q_INIT_RESOURCE(Resources);
 127                 initialized = true;
 128         }
 129 }
 130
 131
 132 namespace lyx {
 133
 134 frontend::Application * createApplication(int & argc, char * argv[])
 135 {
 136 #ifndef Q_WS_X11
 137         // prune -geometry argument(s) by shifting
 138         // the following ones 2 places down.
 139         for (int i = 0 ; i < argc ; ++i) {
 140                 if (strcmp(argv[i], "-geometry") == 0) {
 141                         int const remove = (i+1) < argc ? 2 : 1;
 142                         argc -= remove;
 143                         for (int j = i; j < argc; ++j)
 144                                 argv[j] = argv[j + remove];
 145                         --i;
 146                 }
 147         }
 148 #endif
 149         return new frontend::GuiApplication(argc, argv);
 150 }
 151
 152 namespace frontend {
 153
 154
 155 /// Return the list of loadable formats.
 156 vector<string> loadableImageFormats()
 157 {
 158         vector<string> fmts;
 159
 160         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 161
 162         LYXERR(Debug::GRAPHICS,
 163                 "\nThe image loader can load the following directly:\n");
 164
 165         if (qt_formats.empty())
 166                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 167
 168         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 169
 170                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 171
 172                 string ext = ascii_lowercase((const char *) *it);
 173                 // special case
 174                 if (ext == "jpeg")
 175                         ext = "jpg";
 176                 fmts.push_back(ext);
 177         }
 178
 179         return fmts;
 180 }
 181
 182
 183 ////////////////////////////////////////////////////////////////////////
 184 //
 185 // Icon loading support code
 186 //
 187 ////////////////////////////////////////////////////////////////////////
 188
 189 namespace {
 190
 191 struct PngMap {
 192         QString key;
 193         QString value;
 194 };
 195
 196
 197 bool operator<(PngMap const & lhs, PngMap const & rhs)
 198 {
 199         return lhs.key < rhs.key;
 200 }
 201
 202
 203 class CompareKey {
 204 public:
 205         CompareKey(QString const & name) : name_(name) {}
 206         bool operator()(PngMap const & other) const { return other.key == name_; }
 207 private:
 208         QString const name_;
 209 };
 210
 211
 212 // this must be sorted alphabetically
 213 // Upper case comes before lower case
 214 PngMap sorted_png_map[] = {
 215         { "Bumpeq", "bumpeq2" },
 216         { "Cap", "cap2" },
 217         { "Cup", "cup2" },
 218         { "Delta", "delta2" },
 219         { "Downarrow", "downarrow2" },
 220         { "Gamma", "gamma2" },
 221         { "Lambda", "lambda2" },
 222         { "Leftarrow", "leftarrow2" },
 223         { "Leftrightarrow", "leftrightarrow2" },
 224         { "Longleftarrow", "longleftarrow2" },
 225         { "Longleftrightarrow", "longleftrightarrow2" },
 226         { "Longrightarrow", "longrightarrow2" },
 227         { "Omega", "omega2" },
 228         { "Phi", "phi2" },
 229         { "Pi", "pi2" },
 230         { "Psi", "psi2" },
 231         { "Rightarrow", "rightarrow2" },
 232         { "Sigma", "sigma2" },
 233         { "Subset", "subset2" },
 234         { "Supset", "supset2" },
 235         { "Theta", "theta2" },
 236         { "Uparrow", "uparrow2" },
 237         { "Updownarrow", "updownarrow2" },
 238         { "Upsilon", "upsilon2" },
 239         { "Vdash", "vdash3" },
 240         { "Vert", "vert2" },
 241         { "Xi", "xi2" },
 242         { "nLeftarrow", "nleftarrow2" },
 243         { "nLeftrightarrow", "nleftrightarrow2" },
 244         { "nRightarrow", "nrightarrow2" },
 245         { "nVDash", "nvdash3" },
 246         { "nvDash", "nvdash2" },
 247         { "textrm \\AA", "textrm_AA"},
 248         { "textrm \\O", "textrm_O"},
 249         { "vDash", "vdash2" }
 250 };
 251
 252 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 253
 254
 255 QString findPng(QString const & name)
 256 {
 257         PngMap const * const begin = sorted_png_map;
 258         PngMap const * const end = begin + nr_sorted_png_map;
 259         LASSERT(sorted(begin, end), /**/);
 260
 261         PngMap const * const it = find_if(begin, end, CompareKey(name));
 262
 263         QString png_name;
 264         if (it != end) {
 265                 png_name = it->value;
 266         } else {
 267                 png_name = name;
 268                 png_name.replace('_', "underscore");
 269                 png_name.replace(' ', '_');
 270
 271                 // This way we can have "math-delim { }" on the toolbar.
 272                 png_name.replace('(', "lparen");
 273                 png_name.replace(')', "rparen");
 274                 png_name.replace('[', "lbracket");
 275                 png_name.replace(']', "rbracket");
 276                 png_name.replace('{', "lbrace");
 277                 png_name.replace('}', "rbrace");
 278                 png_name.replace('|', "bars");
 279                 png_name.replace(',', "thinspace");
 280                 png_name.replace(':', "mediumspace");
 281                 png_name.replace(';', "thickspace");
 282                 png_name.replace('!', "negthinspace");
 283         }
 284
 285         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 286                 << "Looking for math PNG called \"" << png_name << '"');
 287         return png_name;
 288 }
 289
 290 } // namespace anon
 291
 292
 293 QString iconName(FuncRequest const & f, bool unknown)
 294 {
 295         initializeResources();
 296         QString name1;
 297         QString name2;
 298         QString path;
 299         switch (f.action) {
 300         case LFUN_MATH_INSERT:
 301                 if (!f.argument().empty()) {
 302                         path = "math/";
 303                         name1 = findPng(toqstr(f.argument()).mid(1));
 304                 }
 305                 break;
 306         case LFUN_MATH_DELIM:
 307         case LFUN_MATH_BIGDELIM:
 308                 path = "math/";
 309                 name1 = findPng(toqstr(f.argument()));
 310                 break;
 311         case LFUN_CALL:
 312                 path = "commands/";
 313                 name1 = toqstr(f.argument());
 314                 break;
 315         default:
 316                 name2 = toqstr(lyxaction.getActionName(f.action));
 317                 name1 = name2;
 318
 319                 if (!f.argument().empty()) {
 320                         name1 = name2 + ' ' + toqstr(f.argument());
 321                         name1.replace(' ', '_');
 322                         name1.replace('\\', "backslash");
 323                 }
 324         }
 325
 326         FileName fname = libFileSearch("images/" + path, name1, "png");
 327         if (fname.exists())
 328                 return toqstr(fname.absFilename());
 329
 330         fname = libFileSearch("images/" + path, name2, "png");
 331         if (fname.exists())
 332                 return toqstr(fname.absFilename());
 333
 334         path = ":/images/" + path;
 335         QDir res(path);
 336         if (!res.exists()) {
 337                 LYXERR0("Directory " << path << " not found in resource!");
 338                 return QString();
 339         }
 340         name1 += ".png";
 341         if (res.exists(name1))
 342                 return path + name1;
 343
 344         name2 += ".png";
 345         if (res.exists(name2))
 346                 return path + name2;
 347
 348         LYXERR(Debug::GUI, "Cannot find icon with filename "
 349                            << "\"" << name1 << "\""
 350                            << " or filename "
 351                            << "\"" << name2 << "\""
 352                            << " for command \""
 353                            << lyxaction.getActionName(f.action)
 354                            << '(' << to_utf8(f.argument()) << ")\"");
 355
 356         if (unknown)
 357                 return QString(":/images/unknown.png");
 358
 359         return QString();
 360 }
 361
 362
 363 QIcon getIcon(FuncRequest const & f, bool unknown)
 364 {
 365         QString icon = iconName(f, unknown);
 366         if (icon.isEmpty())
 367                 return QIcon();
 368
 369         //LYXERR(Debug::GUI, "Found icon: " << icon);
 370         QPixmap pm;
 371         if (!pm.load(icon)) {
 372                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 373                 return QIcon();
 374         }
 375
 376         return QIcon(pm);
 377 }
 378
 379
 380 ////////////////////////////////////////////////////////////////////////
 381 //
 382 // LyX server support code.
 383 //
 384 ////////////////////////////////////////////////////////////////////////
 385
 386 class SocketNotifier : public QSocketNotifier
 387 {
 388 public:
 389         /// connect a connection notification from the LyXServerSocket
 390         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 391                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 392         {}
 393
 394 public:
 395         /// The callback function
 396         Application::SocketCallback func_;
 397 };
 398
 399
 400 ////////////////////////////////////////////////////////////////////////
 401 //
 402 // Mac specific stuff goes here...
 403 //
 404 ////////////////////////////////////////////////////////////////////////
 405
 406 class MenuTranslator : public QTranslator
 407 {
 408 public:
 409         MenuTranslator(QObject * parent)
 410                 : QTranslator(parent)
 411         {}
 412
 413         QString translate(const char * /*context*/,
 414           const char * sourceText,
 415           const char * /*comment*/ = 0)
 416         {
 417                 string const s = sourceText;
 418                 if (s == N_("About %1") || s == N_("Preferences")
 419                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 420                         return qt_(s);
 421                 else
 422                         return QString();
 423         }
 424 };
 425
 426 class GlobalMenuBar : public QMenuBar
 427 {
 428 public:
 429         ///
 430         GlobalMenuBar() : QMenuBar(0) {}
 431
 432         ///
 433         bool event(QEvent * e)
 434         {
 435                 if (e->type() == QEvent::ShortcutOverride) {
 436                         //          && activeWindow() == 0) {
 437                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 438                         KeySymbol sym;
 439                         setKeySymbol(&sym, ke);
 440                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 441                         e->accept();
 442                         return true;
 443                 }
 444                 return false;
 445         }
 446 };
 447
 448 #ifdef Q_WS_MACX
 449 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 450
 451 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 452 {
 453 public:
 454         QMacPasteboardMimeGraphics()
 455                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 456         {}
 457
 458         QString convertorName() { return "Graphics"; }
 459
 460         QString flavorFor(QString const & mime)
 461         {
 462                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 463                 if (mime == pdfMimeType())
 464                         return QLatin1String("com.adobe.pdf");
 465                 return QString();
 466         }
 467
 468         QString mimeFor(QString flav)
 469         {
 470                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 471                 if (flav == QLatin1String("com.adobe.pdf"))
 472                         return pdfMimeType();
 473                 return QString();
 474         }
 475
 476         bool canConvert(QString const & mime, QString flav)
 477         {
 478                 return mimeFor(flav) == mime;
 479         }
 480
 481         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 482                 QString /*flav*/)
 483         {
 484                 if(data.count() > 1)
 485                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 486                 return data.first();
 487         }
 488
 489         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 490                 QVariant data, QString /*flav*/)
 491         {
 492                 QList<QByteArray> ret;
 493                 ret.append(data.toByteArray());
 494                 return ret;
 495         }
 496 };
 497 #endif
 498
 499 ///////////////////////////////////////////////////////////////
 500 //
 501 // You can find more platform specific stuff at the end of this file...
 502 //
 503 ///////////////////////////////////////////////////////////////
 504
 505 ////////////////////////////////////////////////////////////////////////
 506 // Windows specific stuff goes here...
 507
 508 #ifdef Q_WS_WIN
 509 // QWindowsMimeMetafile can only be compiled on Windows.
 510
 511 static FORMATETC cfFromMime(QString const & mimetype)
 512 {
 513         FORMATETC formatetc;
 514         if (mimetype == emfMimeType()) {
 515                 formatetc.cfFormat = CF_ENHMETAFILE;
 516                 formatetc.tymed = TYMED_ENHMF;
 517         } else if (mimetype == wmfMimeType()) {
 518                 formatetc.cfFormat = CF_METAFILEPICT;
 519                 formatetc.tymed = TYMED_MFPICT;
 520         }
 521         formatetc.ptd = 0;
 522         formatetc.dwAspect = DVASPECT_CONTENT;
 523         formatetc.lindex = -1;
 524         return formatetc;
 525 }
 526
 527
 528 class QWindowsMimeMetafile : public QWindowsMime {
 529 public:
 530         QWindowsMimeMetafile() {}
 531
 532         bool canConvertFromMime(FORMATETC const & formatetc,
 533                 QMimeData const * mimedata) const
 534         {
 535                 return false;
 536         }
 537
 538         bool canConvertToMime(QString const & mimetype,
 539                 IDataObject * pDataObj) const
 540         {
 541                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 542                         return false;
 543                 FORMATETC formatetc = cfFromMime(mimetype);
 544                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 545         }
 546
 547         bool convertFromMime(FORMATETC const & formatetc,
 548                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 549         {
 550                 return false;
 551         }
 552
 553         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 554                 QVariant::Type preferredType) const
 555         {
 556                 QByteArray data;
 557                 if (!canConvertToMime(mimetype, pDataObj))
 558                         return data;
 559
 560                 FORMATETC formatetc = cfFromMime(mimetype);
 561                 STGMEDIUM s;
 562                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 563                         return data;
 564
 565                 int dataSize;
 566                 if (s.tymed == TYMED_ENHMF) {
 567                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 568                         data.resize(dataSize);
 569                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 570                                 (LPBYTE)data.data());
 571                 } else if (s.tymed == TYMED_MFPICT) {
 572                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 573                         data.resize(dataSize);
 574                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 575                                 (LPBYTE)data.data());
 576                 }
 577                 data.detach();
 578                 ReleaseStgMedium(&s);
 579
 580                 return data;
 581         }
 582
 583
 584         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 585                 QMimeData const * mimedata) const
 586         {
 587                 QVector<FORMATETC> formats;
 588                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 589                         formats += cfFromMime(mimetype);
 590                 return formats;
 591         }
 592
 593         QString mimeForFormat(FORMATETC const & formatetc) const
 594         {
 595                 switch (formatetc.cfFormat) {
 596                 case CF_ENHMETAFILE:
 597                         return emfMimeType();
 598                 case CF_METAFILEPICT:
 599                         return wmfMimeType();
 600                 }
 601                 return QString();
 602         }
 603 };
 604
 605 #endif // Q_WS_WIN
 606
 607 ////////////////////////////////////////////////////////////////////////
 608 // GuiApplication::Private definition and implementation.
 609 ////////////////////////////////////////////////////////////////////////
 610
 611 struct GuiApplication::Private
 612 {
 613         Private(): language_model_(0), global_menubar_(0) {}
 614
 615         ///
 616         QSortFilterProxyModel * language_model_;
 617         ///
 618         GuiClipboard clipboard_;
 619         ///
 620         GuiSelection selection_;
 621         ///
 622         FontLoader font_loader_;
 623         ///
 624         ColorCache color_cache_;
 625         ///
 626         QTranslator qt_trans_;
 627         ///
 628         QHash<int, SocketNotifier *> socket_notifiers_;
 629         ///
 630         Menus menus_;
 631         ///
 632         /// The global instance
 633         Toolbars toolbars_;
 634
 635         /// this timer is used for any regular events one wants to
 636         /// perform. at present it is used to check if forked processes
 637         /// are done.
 638         QTimer general_timer_;
 639
 640         /// delayed FuncRequests
 641         std::queue<FuncRequest> func_request_queue_;
 642
 643         /// Multiple views container.
 644         /**
 645         * Warning: This must not be a smart pointer as the destruction of the
 646         * object is handled by Qt when the view is closed
 647         * \sa Qt::WA_DeleteOnClose attribute.
 648         */
 649         QHash<int, GuiView *> views_;
 650
 651         /// Only used on mac.
 652         GlobalMenuBar * global_menubar_;
 653
 654 #ifdef Q_WS_MACX
 655         /// Linkback mime handler for MacOSX.
 656         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 657 #endif
 658
 659 #ifdef Q_WS_WIN
 660         /// WMF Mime handler for Windows clipboard.
 661         /// \warning: see comment in ~GuiApplication and in bug 4846.
 662         QWindowsMimeMetafile wmf_mime_;
 663 #endif
 664 };
 665
 666
 667 GuiApplication * guiApp;
 668
 669 GuiApplication::~GuiApplication()
 670 {
 671 #ifdef Q_WS_MACX
 672         closeAllLinkBackLinks();
 673 #endif
 674         // FIXME: Work around bug 4846 for Windows Vista and Qt4
 675         // (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 676         // If the clipboard is not cleared, LyX crashes on exit when it is
 677         // compiled in release mode and if there is something in the clipboard.
 678         // This is related to QWindowsMimeMetafile which is apparently not
 679         // properly destroyed.
 680         qApp->clipboard()->clear(QClipboard::Clipboard);
 681         delete d;
 682 }
 683
 684
 685 GuiApplication::GuiApplication(int & argc, char ** argv)
 686         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 687 {
 688         QString app_name = "LyX";
 689         QCoreApplication::setOrganizationName(app_name);
 690         QCoreApplication::setOrganizationDomain("lyx.org");
 691         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 692
 693         // Install translator for GUI elements.
 694         installTranslator(&d->qt_trans_);
 695
 696         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 697         // lyxrc setting for this in order to let the application stay resident.
 698         // But then we need some kind of dock icon, at least on Windows.
 699         /*
 700         if (lyxrc.quit_on_last_window_closed)
 701                 setQuitOnLastWindowClosed(false);
 702         */
 703 #ifdef Q_WS_MACX
 704         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 705         // seems to be the default case for applications like LyX.
 706         setQuitOnLastWindowClosed(false);
 707
 708         // This allows to translate the strings that appear in the LyX menu.
 709         /// A translator suitable for the entries in the LyX menu.
 710         /// Only needed with Qt/Mac.
 711         installTranslator(new MenuTranslator(this));
 712 #endif
 713
 714 #ifdef Q_WS_X11
 715         // doubleClickInterval() is 400 ms on X11 which is just too long.
 716         // On Windows and Mac OS X, the operating system's value is used.
 717         // On Microsoft Windows, calling this function sets the double
 718         // click interval for all applications. So we don't!
 719         QApplication::setDoubleClickInterval(300);
 720 #endif
 721
 722         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 723
 724         // needs to be done before reading lyxrc
 725         QWidget w;
 726         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 727
 728         guiApp = this;
 729
 730         // Set the cache to 5120 kilobytes which corresponds to screen size of
 731         // 1280 by 1024 pixels with a color depth of 32 bits.
 732         QPixmapCache::setCacheLimit(5120);
 733
 734         // Initialize RC Fonts
 735         if (lyxrc.roman_font_name.empty())
 736                 lyxrc.roman_font_name = fromqstr(romanFontName());
 737
 738         if (lyxrc.sans_font_name.empty())
 739                 lyxrc.sans_font_name = fromqstr(sansFontName());
 740
 741         if (lyxrc.typewriter_font_name.empty())
 742                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 743
 744         d->general_timer_.setInterval(500);
 745         connect(&d->general_timer_, SIGNAL(timeout()),
 746                 this, SLOT(handleRegularEvents()));
 747         d->general_timer_.start();
 748 }
 749
 750
 751 GuiApplication * theGuiApp()
 752 {
 753         return dynamic_cast<GuiApplication *>(theApp());
 754 }
 755
 756
 757 void GuiApplication::clearSession()
 758 {
 759         QSettings settings;
 760         settings.clear();
 761 }
 762
 763
 764 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 765 {
 766         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 767 }
 768
 769
 770
 771 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 772 {
 773         bool enable = true;
 774
 775         switch(cmd.action) {
 776
 777         case LFUN_WINDOW_CLOSE:
 778                 enable = d->views_.size() > 0;
 779                 break;
 780
 781         case LFUN_BUFFER_NEW:
 782         case LFUN_BUFFER_NEW_TEMPLATE:
 783         case LFUN_FILE_OPEN:
 784         case LFUN_SCREEN_FONT_UPDATE:
 785         case LFUN_SET_COLOR:
 786         case LFUN_WINDOW_NEW:
 787         case LFUN_LYX_QUIT:
 788                 enable = true;
 789                 break;
 790
 791         default:
 792                 return false;
 793         }
 794
 795         if (!enable)
 796                 flag.setEnabled(false);
 797
 798         return true;
 799 }
 800
 801
 802 bool GuiApplication::dispatch(FuncRequest const & cmd)
 803 {
 804         switch (cmd.action) {
 805
 806         case LFUN_WINDOW_NEW:
 807                 createView(toqstr(cmd.argument()));
 808                 break;
 809
 810         case LFUN_WINDOW_CLOSE:
 811                 // update bookmark pit of the current buffer before window close
 812                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 813                         theLyXFunc().gotoBookmark(i+1, false, false);
 814                 current_view_->close();
 815                 break;
 816
 817         case LFUN_LYX_QUIT:
 818                 // quitting is triggered by the gui code
 819                 // (leaving the event loop).
 820                 if (current_view_)
 821                         current_view_->message(from_utf8(N_("Exiting.")));
 822                 if (closeAllViews())
 823                         quit();
 824                 break;
 825
 826         case LFUN_SCREEN_FONT_UPDATE: {
 827                 // handle the screen font changes.
 828                 d->font_loader_.update();
 829                 // Backup current_view_
 830                 GuiView * view = current_view_;
 831                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 832                 // to skip the refresh.
 833                 current_view_ = 0;
 834                 BufferList::iterator it = theBufferList().begin();
 835                 BufferList::iterator const end = theBufferList().end();
 836                 for (; it != end; ++it)
 837                         (*it)->changed();
 838                 // Restore current_view_
 839                 current_view_ = view;
 840                 break;
 841         }
 842
 843         case LFUN_BUFFER_NEW:
 844                 if (d->views_.empty()
 845                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 846                         createView(QString(), false); // keep hidden
 847                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 848                         current_view_->show();
 849                         setActiveWindow(current_view_);
 850                 } else {
 851                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 852                 }
 853                 break;
 854
 855         case LFUN_BUFFER_NEW_TEMPLATE:
 856                 if (d->views_.empty()
 857                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 858                         createView();
 859                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 860                         if (!current_view_->buffer())
 861                                 current_view_->close();
 862                 } else {
 863                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 864                 }
 865                 break;
 866
 867         case LFUN_FILE_OPEN:
 868                 if (d->views_.empty()
 869                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 870                         string const fname = to_utf8(cmd.argument());
 871                         // We want the ui session to be saved per document and not per
 872                         // window number. The filename crc is a good enough identifier.
 873                         boost::crc_32_type crc;
 874                         crc = for_each(fname.begin(), fname.end(), crc);
 875                         createView(crc.checksum());
 876                         current_view_->openDocument(fname);
 877                         if (current_view_ && !current_view_->buffer())
 878                                 current_view_->close();
 879                 } else
 880                         current_view_->openDocument(to_utf8(cmd.argument()));
 881                 break;
 882
 883         case LFUN_SET_COLOR: {
 884                 string lyx_name;
 885                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 886                 if (lyx_name.empty() || x11_name.empty()) {
 887                         current_view_->message(
 888                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 889                         break;
 890                 }
 891
 892                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 893                 bool const graphicsbg_changed = lyx_name == graphicsbg
 894                         && x11_name != graphicsbg;
 895                 if (graphicsbg_changed) {
 896                         // FIXME: The graphics cache no longer has a changeDisplay method.
 897 #if 0
 898                         graphics::GCache::get().changeDisplay(true);
 899 #endif
 900                 }
 901
 902                 if (!lcolor.setColor(lyx_name, x11_name)) {
 903                         current_view_->message(
 904                                         bformat(_("Set-color \"%1$s\" failed "
 905                                                                "- color is undefined or "
 906                                                                "may not be redefined"),
 907                                                                    from_utf8(lyx_name)));
 908                         break;
 909                 }
 910                 // Make sure we don't keep old colors in cache.
 911                 d->color_cache_.clear();
 912                 break;
 913         }
 914
 915         default:
 916                 // Notify the caller that the action has not been dispatched.
 917                 return false;
 918         }
 919
 920         // The action has been dispatched.
 921         return true;
 922 }
 923
 924
 925 void GuiApplication::dispatchDelayed(FuncRequest const & func)
 926 {
 927         d->func_request_queue_.push(func);
 928         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
 929 }
 930
 931
 932 void GuiApplication::resetGui()
 933 {
 934         // Set the language defined by the user.
 935         setGuiLanguage();
 936
 937         // Read menus
 938         if (!readUIFile(toqstr(lyxrc.ui_file)))
 939                 // Gives some error box here.
 940                 return;
 941
 942         if (d->global_menubar_)
 943                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
 944
 945         QHash<int, GuiView *>::iterator it;
 946         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 947                 GuiView * gv = *it;
 948                 gv->setLayoutDirection(layoutDirection());
 949                 gv->resetDialogs();
 950         }
 951
 952         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 953 }
 954
 955
 956 void GuiApplication::createView(int view_id)
 957 {
 958         createView(QString(), true, view_id);
 959 }
 960
 961
 962 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 963         int view_id)
 964 {
 965         // release the keyboard which might have been grabed by the global
 966         // menubar on Mac to catch shortcuts even without any GuiView.
 967         if (d->global_menubar_)
 968                 d->global_menubar_->releaseKeyboard();
 969
 970         // create new view
 971         int id = view_id;
 972         if (id == 0) {
 973                 while (d->views_.find(id) != d->views_.end())
 974                         id++;
 975         }
 976         LYXERR(Debug::GUI, "About to create new window with ID " << id);
 977         GuiView * view = new GuiView(id);
 978         // register view
 979         d->views_[id] = view;
 980
 981         if (autoShow) {
 982                 view->show();
 983                 setActiveWindow(view);
 984         }
 985
 986         if (!geometry_arg.isEmpty()) {
 987 #ifdef Q_WS_WIN
 988                 int x, y;
 989                 int w, h;
 990                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 991                 re.indexIn(geometry_arg);
 992                 w = re.cap(1).toInt();
 993                 h = re.cap(2).toInt();
 994                 x = re.cap(3).toInt();
 995                 y = re.cap(4).toInt();
 996                 view->setGeometry(x, y, w, h);
 997 #endif
 998         }
 999         view->setFocus();
1000 }
1001
1002
1003 Clipboard & GuiApplication::clipboard()
1004 {
1005         return d->clipboard_;
1006 }
1007
1008
1009 Selection & GuiApplication::selection()
1010 {
1011         return d->selection_;
1012 }
1013
1014
1015 FontLoader & GuiApplication::fontLoader()
1016 {
1017         return d->font_loader_;
1018 }
1019
1020
1021 Toolbars const & GuiApplication::toolbars() const
1022 {
1023         return d->toolbars_;
1024 }
1025
1026
1027 Toolbars & GuiApplication::toolbars()
1028 {
1029         return d->toolbars_;
1030 }
1031
1032
1033 Menus const & GuiApplication::menus() const
1034 {
1035         return d->menus_;
1036 }
1037
1038
1039 Menus & GuiApplication::menus()
1040 {
1041         return d->menus_;
1042 }
1043
1044
1045 QList<int> GuiApplication::viewIds() const
1046 {
1047         return d->views_.keys();
1048 }
1049
1050
1051 ColorCache & GuiApplication::colorCache()
1052 {
1053         return d->color_cache_;
1054 }
1055
1056
1057 int GuiApplication::exec()
1058 {
1059         // asynchronously handle batch commands. This event will be in
1060         // the event queue in front of other asynchronous events. Hence,
1061         // we can assume in the latter that the gui is setup already.
1062         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1063
1064         return QApplication::exec();
1065 }
1066
1067
1068 void GuiApplication::exit(int status)
1069 {
1070         QApplication::exit(status);
1071 }
1072
1073
1074 void GuiApplication::setGuiLanguage()
1075 {
1076         // Set the language defined by the user.
1077         setRcGuiLanguage();
1078
1079         QString const default_language = toqstr(Messages::defaultLanguage());
1080         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1081         QLocale const default_locale(default_language);
1082         QLocale::setDefault(default_locale);
1083
1084         // install translation file for Qt built-in dialogs
1085         QString const language_name = QString("qt_") + default_locale.name();
1086
1087         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1088         // Short-named translator can be loaded from a long name, but not the
1089         // opposite. Therefore, long name should be used without truncation.
1090         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1091         if (!d->qt_trans_.load(language_name,
1092                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1093                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1094                         << language_name);
1095         } else {
1096                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1097                         << language_name);
1098         }
1099
1100         switch (default_locale.language()) {
1101         case QLocale::Arabic :
1102         case QLocale::Hebrew :
1103         case QLocale::Persian :
1104         case QLocale::Urdu :
1105         setLayoutDirection(Qt::RightToLeft);
1106                 break;
1107         default:
1108         setLayoutDirection(Qt::LeftToRight);
1109         }
1110 }
1111
1112
1113 void GuiApplication::processFuncRequestQueue()
1114 {
1115         while (!d->func_request_queue_.empty()) {
1116                 lyx::dispatch(d->func_request_queue_.back());
1117                 d->func_request_queue_.pop();
1118         }
1119 }
1120
1121
1122 void GuiApplication::execBatchCommands()
1123 {
1124         setGuiLanguage();
1125
1126         // Read menus
1127         if (!readUIFile(toqstr(lyxrc.ui_file)))
1128                 // Gives some error box here.
1129                 return;
1130
1131 #ifdef Q_WS_MACX
1132         // Create the global default menubar which is shown for the dialogs
1133         // and if no GuiView is visible.
1134         // This must be done after the session was recovered to know the "last files".
1135         d->global_menubar_ = new GlobalMenuBar();
1136         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1137 #endif
1138
1139         lyx::execBatchCommands();
1140 }
1141
1142
1143 QAbstractItemModel * GuiApplication::languageModel()
1144 {
1145         if (d->language_model_)
1146                 return d->language_model_;
1147
1148         QStandardItemModel * lang_model = new QStandardItemModel(this);
1149         lang_model->insertColumns(0, 1);
1150         int current_row;
1151         Languages::const_iterator it = languages.begin();
1152         Languages::const_iterator end = languages.end();
1153         for (; it != end; ++it) {
1154                 current_row = lang_model->rowCount();
1155                 lang_model->insertRows(current_row, 1);
1156                 QModelIndex item = lang_model->index(current_row, 0);
1157                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1158                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1159         }
1160         d->language_model_ = new QSortFilterProxyModel(this);
1161         d->language_model_->setSourceModel(lang_model);
1162 #if QT_VERSION >= 0x040300
1163         d->language_model_->setSortLocaleAware(true);
1164 #endif
1165         return d->language_model_;
1166 }
1167
1168
1169 void GuiApplication::restoreGuiSession()
1170 {
1171         if (!lyxrc.load_session)
1172                 return;
1173
1174         Session & session = theSession();
1175         vector<FileName> const & lastopened = session.lastOpened().getfiles();
1176         // do not add to the lastfile list since these files are restored from
1177         // last session, and should be already there (regular files), or should
1178         // not be added at all (help files).
1179         for_each(lastopened.begin(), lastopened.end(),
1180                 bind(&GuiView::loadDocument, current_view_, _1, false));
1181
1182         // clear this list to save a few bytes of RAM
1183         session.lastOpened().clear();
1184 }
1185
1186
1187 QString const GuiApplication::romanFontName()
1188 {
1189         QFont font;
1190         font.setKerning(false);
1191         font.setStyleHint(QFont::Serif);
1192         font.setFamily("serif");
1193
1194         return QFontInfo(font).family();
1195 }
1196
1197
1198 QString const GuiApplication::sansFontName()
1199 {
1200         QFont font;
1201         font.setKerning(false);
1202         font.setStyleHint(QFont::SansSerif);
1203         font.setFamily("sans");
1204
1205         return QFontInfo(font).family();
1206 }
1207
1208
1209 QString const GuiApplication::typewriterFontName()
1210 {
1211         QFont font;
1212         font.setKerning(false);
1213         font.setStyleHint(QFont::TypeWriter);
1214         font.setFamily("monospace");
1215
1216         return QFontInfo(font).family();
1217 }
1218
1219
1220 void GuiApplication::handleRegularEvents()
1221 {
1222         ForkedCallsController::handleCompletedProcesses();
1223 }
1224
1225
1226 bool GuiApplication::event(QEvent * e)
1227 {
1228         switch(e->type()) {
1229         case QEvent::FileOpen: {
1230                 // Open a file; this happens only on Mac OS X for now.
1231                 //
1232                 // We do this asynchronously because on startup the batch
1233                 // commands are not executed here yet and the gui is not ready
1234                 // therefore.
1235                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1236                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
1237                 e->accept();
1238                 return true;
1239         }
1240         default:
1241                 return QApplication::event(e);
1242         }
1243 }
1244
1245
1246 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1247 {
1248         try {
1249                 return QApplication::notify(receiver, event);
1250         }
1251         catch (ExceptionMessage const & e) {
1252                 switch(e.type_) {
1253                 case ErrorException:
1254                         emergencyCleanup();
1255                         setQuitOnLastWindowClosed(false);
1256                         closeAllViews();
1257                         Alert::error(e.title_, e.details_);
1258 #ifndef NDEBUG
1259                         // Properly crash in debug mode in order to get a useful backtrace.
1260                         abort();
1261 #endif
1262                         // In release mode, try to exit gracefully.
1263                         this->exit(1);
1264
1265                 case BufferException: {
1266                         Buffer * buf = current_view_->buffer();
1267                         docstring details = e.details_ + '\n';
1268                         details += theBufferList().emergencyWrite(buf);
1269                         theBufferList().release(buf);
1270                         details += "\n" + _("The current document was closed.");
1271                         Alert::error(e.title_, details);
1272                         return false;
1273                 }
1274                 case WarningException:
1275                         Alert::warning(e.title_, e.details_);
1276                         return false;
1277                 }
1278         }
1279         catch (exception const & e) {
1280                 docstring s = _("LyX has caught an exception, it will now "
1281                         "attempt to save all unsaved documents and exit."
1282                         "\n\nException: ");
1283                 s += from_ascii(e.what());
1284                 Alert::error(_("Software exception Detected"), s);
1285                 lyx_exit(1);
1286         }
1287         catch (...) {
1288                 docstring s = _("LyX has caught some really weird exception, it will "
1289                         "now attempt to save all unsaved documents and exit.");
1290                 Alert::error(_("Software exception Detected"), s);
1291                 lyx_exit(1);
1292         }
1293
1294         return false;
1295 }
1296
1297
1298 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1299 {
1300         QColor const & qcol = d->color_cache_.get(col);
1301         if (!qcol.isValid()) {
1302                 rgbcol.r = 0;
1303                 rgbcol.g = 0;
1304                 rgbcol.b = 0;
1305                 return false;
1306         }
1307         rgbcol.r = qcol.red();
1308         rgbcol.g = qcol.green();
1309         rgbcol.b = qcol.blue();
1310         return true;
1311 }
1312
1313
1314 string const GuiApplication::hexName(ColorCode col)
1315 {
1316         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1317 }
1318
1319
1320 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1321 {
1322         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1323         d->socket_notifiers_[fd] = sn;
1324         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1325 }
1326
1327
1328 void GuiApplication::socketDataReceived(int fd)
1329 {
1330         d->socket_notifiers_[fd]->func_();
1331 }
1332
1333
1334 void GuiApplication::unregisterSocketCallback(int fd)
1335 {
1336         d->socket_notifiers_.take(fd)->setEnabled(false);
1337 }
1338
1339
1340 void GuiApplication::commitData(QSessionManager & sm)
1341 {
1342         /// The implementation is required to avoid an application exit
1343         /// when session state save is triggered by session manager.
1344         /// The default implementation sends a close event to all
1345         /// visible top level widgets when session managment allows
1346         /// interaction.
1347         /// We are changing that to close all wiew one by one.
1348         /// FIXME: verify if the default implementation is enough now.
1349         if (sm.allowsInteraction() && !closeAllViews())
1350                 sm.cancel();
1351 }
1352
1353
1354 void GuiApplication::unregisterView(GuiView * gv)
1355 {
1356         LASSERT(d->views_[gv->id()] == gv, /**/);
1357         d->views_.remove(gv->id());
1358         if (current_view_ == gv) {
1359                 current_view_ = 0;
1360                 theLyXFunc().setLyXView(0);
1361         }
1362 }
1363
1364
1365 bool GuiApplication::closeAllViews()
1366 {
1367         if (d->views_.empty())
1368                 return true;
1369
1370         QList<GuiView *> views = d->views_.values();
1371         foreach (GuiView * view, views) {
1372                 if (!view->close())
1373                         return false;
1374         }
1375
1376         d->views_.clear();
1377         return true;
1378 }
1379
1380
1381 GuiView & GuiApplication::view(int id) const
1382 {
1383         LASSERT(d->views_.contains(id), /**/);
1384         return *d->views_.value(id);
1385 }
1386
1387
1388 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1389 {
1390         QList<GuiView *> views = d->views_.values();
1391         foreach (GuiView * view, views)
1392                 view->hideDialog(name, inset);
1393 }
1394
1395
1396 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1397 {
1398         Buffer const * buffer_ = 0;
1399         QHash<int, GuiView *>::iterator end = d->views_.end();
1400         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1401                 if (Buffer const * ptr = (*it)->updateInset(inset))
1402                         buffer_ = ptr;
1403         }
1404         return buffer_;
1405 }
1406
1407
1408 bool GuiApplication::searchMenu(FuncRequest const & func,
1409         docstring_list & names) const
1410 {
1411         return d->menus_.searchMenu(func, names);
1412 }
1413
1414
1415 bool GuiApplication::readUIFile(QString const & name, bool include)
1416 {
1417         enum {
1418                 ui_menuset = 1,
1419                 ui_toolbars,
1420                 ui_toolbarset,
1421                 ui_include,
1422                 ui_last
1423         };
1424
1425         LexerKeyword uitags[] = {
1426                 { "include", ui_include },
1427                 { "menuset", ui_menuset },
1428                 { "toolbars", ui_toolbars },
1429                 { "toolbarset", ui_toolbarset }
1430         };
1431
1432         LYXERR(Debug::INIT, "About to read " << name << "...");
1433
1434         FileName ui_path;
1435         if (include) {
1436                 ui_path = libFileSearch("ui", name, "inc");
1437                 if (ui_path.empty())
1438                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1439         } else {
1440                 ui_path = libFileSearch("ui", name, "ui");
1441         }
1442
1443         if (ui_path.empty()) {
1444                 LYXERR(Debug::INIT, "Could not find " << name);
1445                 Alert::warning(_("Could not find UI definition file"),
1446                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1447                                    "Please check your installation."), qstring_to_ucs4(name)));
1448                 return false;
1449         }
1450
1451
1452         // Ensure that a file is read only once (prevents include loops)
1453         static QStringList uifiles;
1454         QString const uifile = toqstr(ui_path.absFilename());
1455         if (uifiles.contains(uifile)) {
1456                 if (!include) {
1457                         // We are reading again the top uifile so reset the safeguard:
1458                         uifiles.clear();
1459                         d->menus_.reset();
1460                         d->toolbars_.reset();
1461                 } else {
1462                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1463                                 << "Is this an include loop?");
1464                         return false;
1465                 }
1466         }
1467         uifiles.push_back(uifile);
1468
1469         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1470
1471         Lexer lex(uitags);
1472         lex.setFile(ui_path);
1473         if (!lex.isOK()) {
1474                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1475                        << endl;
1476         }
1477
1478         if (lyxerr.debugging(Debug::PARSER))
1479                 lex.printTable(lyxerr);
1480
1481         while (lex.isOK()) {
1482                 switch (lex.lex()) {
1483                 case ui_include: {
1484                         lex.next(true);
1485                         QString const file = toqstr(lex.getString());
1486                         if (!readUIFile(file, true))
1487                                 return false;
1488                         break;
1489                 }
1490                 case ui_menuset:
1491                         d->menus_.read(lex);
1492                         break;
1493
1494                 case ui_toolbarset:
1495                         d->toolbars_.readToolbars(lex);
1496                         break;
1497
1498                 case ui_toolbars:
1499                         d->toolbars_.readToolbarSettings(lex);
1500                         break;
1501
1502                 default:
1503                         if (!rtrim(lex.getString()).empty())
1504                                 lex.printError("LyX::ReadUIFile: "
1505                                                "Unknown menu tag: `$$Token'");
1506                         break;
1507                 }
1508         }
1509
1510         if (include)
1511                 return true;
1512
1513         QSettings settings;
1514         settings.beginGroup("ui_files");
1515         bool touched = false;
1516         for (int i = 0; i != uifiles.size(); ++i) {
1517                 QFileInfo fi(uifiles[i]);
1518                 QDateTime const date_value = fi.lastModified();
1519                 QString const name_key = QString::number(i);
1520                 if (!settings.contains(name_key)
1521                  || settings.value(name_key).toString() != uifiles[i]
1522                  || settings.value(name_key + "/date").toDateTime() != date_value) {
1523                         touched = true;
1524                         settings.setValue(name_key, uifiles[i]);
1525                         settings.setValue(name_key + "/date", date_value);
1526                 }
1527         }
1528         settings.endGroup();
1529         if (touched)
1530                 settings.remove("views");
1531
1532         return true;
1533 }
1534
1535
1536 void GuiApplication::onLastWindowClosed()
1537 {
1538         if (d->global_menubar_)
1539                 d->global_menubar_->grabKeyboard();
1540 }
1541
1542
1543 ////////////////////////////////////////////////////////////////////////
1544 //
1545 // X11 specific stuff goes here...
1546
1547 #ifdef Q_WS_X11
1548 bool GuiApplication::x11EventFilter(XEvent * xev)
1549 {
1550         if (!current_view_)
1551                 return false;
1552
1553         switch (xev->type) {
1554         case SelectionRequest: {
1555                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1556                         break;
1557                 LYXERR(Debug::SELECTION, "X requested selection.");
1558                 BufferView * bv = current_view_->view();
1559                 if (bv) {
1560                         docstring const sel = bv->requestSelection();
1561                         if (!sel.empty())
1562                                 d->selection_.put(sel);
1563                 }
1564                 break;
1565         }
1566         case SelectionClear: {
1567                 if (xev->xselectionclear.selection != XA_PRIMARY)
1568                         break;
1569                 LYXERR(Debug::SELECTION, "Lost selection.");
1570                 BufferView * bv = current_view_->view();
1571                 if (bv)
1572                         bv->clearSelection();
1573                 break;
1574         }
1575         }
1576         return false;
1577 }
1578 #endif
1579
1580 } // namespace frontend
1581
1582
1583 void hideDialogs(std::string const & name, Inset * inset)
1584 {
1585         if (theApp())
1586                 theApp()->hideDialogs(name, inset);
1587 }
1588
1589
1590 ////////////////////////////////////////////////////////////////////
1591 //
1592 // Font stuff
1593 //
1594 ////////////////////////////////////////////////////////////////////
1595
1596 frontend::FontLoader & theFontLoader()
1597 {
1598         LASSERT(frontend::guiApp, /**/);
1599         return frontend::guiApp->fontLoader();
1600 }
1601
1602
1603 frontend::FontMetrics const & theFontMetrics(Font const & f)
1604 {
1605         return theFontMetrics(f.fontInfo());
1606 }
1607
1608
1609 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1610 {
1611         LASSERT(frontend::guiApp, /**/);
1612         return frontend::guiApp->fontLoader().metrics(f);
1613 }
1614
1615
1616 ////////////////////////////////////////////////////////////////////
1617 //
1618 // Misc stuff
1619 //
1620 ////////////////////////////////////////////////////////////////////
1621
1622 frontend::Clipboard & theClipboard()
1623 {
1624         LASSERT(frontend::guiApp, /**/);
1625         return frontend::guiApp->clipboard();
1626 }
1627
1628
1629 frontend::Selection & theSelection()
1630 {
1631         LASSERT(frontend::guiApp, /**/);
1632         return frontend::guiApp->selection();
1633 }
1634
1635
1636 } // namespace lyx
1637
1638 #include "moc_GuiApplication.cpp"