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