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         case LFUN_COMMAND_ALTERNATIVES: {
 316                 // use the first of the alternative commands
 317                 docstring firstcom;
 318                 docstring dummy = split(f.argument(), firstcom, ';');
 319                 name1 = toqstr(firstcom);
 320                 name1.replace(' ', '_');
 321                 break;
 322         }
 323         default:
 324                 name2 = toqstr(lyxaction.getActionName(f.action));
 325                 name1 = name2;
 326
 327                 if (!f.argument().empty()) {
 328                         name1 = name2 + ' ' + toqstr(f.argument());
 329                         name1.replace(' ', '_');
 330                         name1.replace('\\', "backslash");
 331                 }
 332         }
 333
 334         FileName fname = libFileSearch("images/" + path, name1, "png");
 335         if (fname.exists())
 336                 return toqstr(fname.absFilename());
 337
 338         fname = libFileSearch("images/" + path, name2, "png");
 339         if (fname.exists())
 340                 return toqstr(fname.absFilename());
 341
 342         path = ":/images/" + path;
 343         QDir res(path);
 344         if (!res.exists()) {
 345                 LYXERR0("Directory " << path << " not found in resource!");
 346                 return QString();
 347         }
 348         name1 += ".png";
 349         if (res.exists(name1))
 350                 return path + name1;
 351
 352         name2 += ".png";
 353         if (res.exists(name2))
 354                 return path + name2;
 355
 356         LYXERR(Debug::GUI, "Cannot find icon with filename "
 357                            << "\"" << name1 << "\""
 358                            << " or filename "
 359                            << "\"" << name2 << "\""
 360                            << " for command \""
 361                            << lyxaction.getActionName(f.action)
 362                            << '(' << to_utf8(f.argument()) << ")\"");
 363
 364         if (unknown)
 365                 return QString(":/images/unknown.png");
 366
 367         return QString();
 368 }
 369
 370
 371 QIcon getIcon(FuncRequest const & f, bool unknown)
 372 {
 373         QString icon = iconName(f, unknown);
 374         if (icon.isEmpty())
 375                 return QIcon();
 376
 377         //LYXERR(Debug::GUI, "Found icon: " << icon);
 378         QPixmap pm;
 379         if (!pm.load(icon)) {
 380                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 381                 return QIcon();
 382         }
 383
 384         return QIcon(pm);
 385 }
 386
 387
 388 ////////////////////////////////////////////////////////////////////////
 389 //
 390 // LyX server support code.
 391 //
 392 ////////////////////////////////////////////////////////////////////////
 393
 394 class SocketNotifier : public QSocketNotifier
 395 {
 396 public:
 397         /// connect a connection notification from the LyXServerSocket
 398         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 399                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 400         {}
 401
 402 public:
 403         /// The callback function
 404         Application::SocketCallback func_;
 405 };
 406
 407
 408 ////////////////////////////////////////////////////////////////////////
 409 //
 410 // Mac specific stuff goes here...
 411 //
 412 ////////////////////////////////////////////////////////////////////////
 413
 414 class MenuTranslator : public QTranslator
 415 {
 416 public:
 417         MenuTranslator(QObject * parent)
 418                 : QTranslator(parent)
 419         {}
 420
 421         QString translate(const char * /*context*/,
 422           const char * sourceText,
 423           const char * /*comment*/ = 0)
 424         {
 425                 string const s = sourceText;
 426                 if (s == N_("About %1") || s == N_("Preferences")
 427                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 428                         return qt_(s);
 429                 else
 430                         return QString();
 431         }
 432 };
 433
 434 class GlobalMenuBar : public QMenuBar
 435 {
 436 public:
 437         ///
 438         GlobalMenuBar() : QMenuBar(0) {}
 439
 440         ///
 441         bool event(QEvent * e)
 442         {
 443                 if (e->type() == QEvent::ShortcutOverride) {
 444                         //          && activeWindow() == 0) {
 445                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 446                         KeySymbol sym;
 447                         setKeySymbol(&sym, ke);
 448                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 449                         e->accept();
 450                         return true;
 451                 }
 452                 return false;
 453         }
 454 };
 455
 456 #ifdef Q_WS_MACX
 457 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 458
 459 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 460 {
 461 public:
 462         QMacPasteboardMimeGraphics()
 463                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 464         {}
 465
 466         QString convertorName() { return "Graphics"; }
 467
 468         QString flavorFor(QString const & mime)
 469         {
 470                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 471                 if (mime == pdfMimeType())
 472                         return QLatin1String("com.adobe.pdf");
 473                 return QString();
 474         }
 475
 476         QString mimeFor(QString flav)
 477         {
 478                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 479                 if (flav == QLatin1String("com.adobe.pdf"))
 480                         return pdfMimeType();
 481                 return QString();
 482         }
 483
 484         bool canConvert(QString const & mime, QString flav)
 485         {
 486                 return mimeFor(flav) == mime;
 487         }
 488
 489         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 490                 QString /*flav*/)
 491         {
 492                 if(data.count() > 1)
 493                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 494                 return data.first();
 495         }
 496
 497         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 498                 QVariant data, QString /*flav*/)
 499         {
 500                 QList<QByteArray> ret;
 501                 ret.append(data.toByteArray());
 502                 return ret;
 503         }
 504 };
 505 #endif
 506
 507 ///////////////////////////////////////////////////////////////
 508 //
 509 // You can find more platform specific stuff at the end of this file...
 510 //
 511 ///////////////////////////////////////////////////////////////
 512
 513 ////////////////////////////////////////////////////////////////////////
 514 // Windows specific stuff goes here...
 515
 516 #ifdef Q_WS_WIN
 517 // QWindowsMimeMetafile can only be compiled on Windows.
 518
 519 static FORMATETC cfFromMime(QString const & mimetype)
 520 {
 521         FORMATETC formatetc;
 522         if (mimetype == emfMimeType()) {
 523                 formatetc.cfFormat = CF_ENHMETAFILE;
 524                 formatetc.tymed = TYMED_ENHMF;
 525         } else if (mimetype == wmfMimeType()) {
 526                 formatetc.cfFormat = CF_METAFILEPICT;
 527                 formatetc.tymed = TYMED_MFPICT;
 528         }
 529         formatetc.ptd = 0;
 530         formatetc.dwAspect = DVASPECT_CONTENT;
 531         formatetc.lindex = -1;
 532         return formatetc;
 533 }
 534
 535
 536 class QWindowsMimeMetafile : public QWindowsMime {
 537 public:
 538         QWindowsMimeMetafile() {}
 539
 540         bool canConvertFromMime(FORMATETC const & formatetc,
 541                 QMimeData const * mimedata) const
 542         {
 543                 return false;
 544         }
 545
 546         bool canConvertToMime(QString const & mimetype,
 547                 IDataObject * pDataObj) const
 548         {
 549                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 550                         return false;
 551                 FORMATETC formatetc = cfFromMime(mimetype);
 552                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 553         }
 554
 555         bool convertFromMime(FORMATETC const & formatetc,
 556                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 557         {
 558                 return false;
 559         }
 560
 561         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 562                 QVariant::Type preferredType) const
 563         {
 564                 QByteArray data;
 565                 if (!canConvertToMime(mimetype, pDataObj))
 566                         return data;
 567
 568                 FORMATETC formatetc = cfFromMime(mimetype);
 569                 STGMEDIUM s;
 570                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 571                         return data;
 572
 573                 int dataSize;
 574                 if (s.tymed == TYMED_ENHMF) {
 575                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 576                         data.resize(dataSize);
 577                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 578                                 (LPBYTE)data.data());
 579                 } else if (s.tymed == TYMED_MFPICT) {
 580                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 581                         data.resize(dataSize);
 582                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 583                                 (LPBYTE)data.data());
 584                 }
 585                 data.detach();
 586                 ReleaseStgMedium(&s);
 587
 588                 return data;
 589         }
 590
 591
 592         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 593                 QMimeData const * mimedata) const
 594         {
 595                 QVector<FORMATETC> formats;
 596                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 597                         formats += cfFromMime(mimetype);
 598                 return formats;
 599         }
 600
 601         QString mimeForFormat(FORMATETC const & formatetc) const
 602         {
 603                 switch (formatetc.cfFormat) {
 604                 case CF_ENHMETAFILE:
 605                         return emfMimeType();
 606                 case CF_METAFILEPICT:
 607                         return wmfMimeType();
 608                 }
 609                 return QString();
 610         }
 611 };
 612
 613 #endif // Q_WS_WIN
 614
 615 ////////////////////////////////////////////////////////////////////////
 616 // GuiApplication::Private definition and implementation.
 617 ////////////////////////////////////////////////////////////////////////
 618
 619 struct GuiApplication::Private
 620 {
 621         Private(): language_model_(0), global_menubar_(0) {}
 622
 623         ///
 624         QSortFilterProxyModel * language_model_;
 625         ///
 626         GuiClipboard clipboard_;
 627         ///
 628         GuiSelection selection_;
 629         ///
 630         FontLoader font_loader_;
 631         ///
 632         ColorCache color_cache_;
 633         ///
 634         QTranslator qt_trans_;
 635         ///
 636         QHash<int, SocketNotifier *> socket_notifiers_;
 637         ///
 638         Menus menus_;
 639         ///
 640         /// The global instance
 641         Toolbars toolbars_;
 642
 643         /// this timer is used for any regular events one wants to
 644         /// perform. at present it is used to check if forked processes
 645         /// are done.
 646         QTimer general_timer_;
 647
 648         /// delayed FuncRequests
 649         std::queue<FuncRequest> func_request_queue_;
 650
 651         /// Multiple views container.
 652         /**
 653         * Warning: This must not be a smart pointer as the destruction of the
 654         * object is handled by Qt when the view is closed
 655         * \sa Qt::WA_DeleteOnClose attribute.
 656         */
 657         QHash<int, GuiView *> views_;
 658
 659         /// Only used on mac.
 660         GlobalMenuBar * global_menubar_;
 661
 662 #ifdef Q_WS_MACX
 663         /// Linkback mime handler for MacOSX.
 664         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 665 #endif
 666
 667 #ifdef Q_WS_WIN
 668         /// WMF Mime handler for Windows clipboard.
 669         /// \warning: see comment in ~GuiApplication and in bug 4846.
 670         QWindowsMimeMetafile wmf_mime_;
 671 #endif
 672 };
 673
 674
 675 GuiApplication * guiApp;
 676
 677 GuiApplication::~GuiApplication()
 678 {
 679 #ifdef Q_WS_MACX
 680         closeAllLinkBackLinks();
 681 #endif
 682         // FIXME: Work around bug 4846 for Windows Vista and Qt4
 683         // (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 684         // If the clipboard is not cleared, LyX crashes on exit when it is
 685         // compiled in release mode and if there is something in the clipboard.
 686         // This is related to QWindowsMimeMetafile which is apparently not
 687         // properly destroyed.
 688         qApp->clipboard()->clear(QClipboard::Clipboard);
 689         delete d;
 690 }
 691
 692
 693 GuiApplication::GuiApplication(int & argc, char ** argv)
 694         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 695 {
 696         QString app_name = "LyX";
 697         QCoreApplication::setOrganizationName(app_name);
 698         QCoreApplication::setOrganizationDomain("lyx.org");
 699         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 700
 701         // Install translator for GUI elements.
 702         installTranslator(&d->qt_trans_);
 703
 704         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 705         // lyxrc setting for this in order to let the application stay resident.
 706         // But then we need some kind of dock icon, at least on Windows.
 707         /*
 708         if (lyxrc.quit_on_last_window_closed)
 709                 setQuitOnLastWindowClosed(false);
 710         */
 711 #ifdef Q_WS_MACX
 712         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 713         // seems to be the default case for applications like LyX.
 714         setQuitOnLastWindowClosed(false);
 715
 716         // This allows to translate the strings that appear in the LyX menu.
 717         /// A translator suitable for the entries in the LyX menu.
 718         /// Only needed with Qt/Mac.
 719         installTranslator(new MenuTranslator(this));
 720 #endif
 721
 722 #ifdef Q_WS_X11
 723         // doubleClickInterval() is 400 ms on X11 which is just too long.
 724         // On Windows and Mac OS X, the operating system's value is used.
 725         // On Microsoft Windows, calling this function sets the double
 726         // click interval for all applications. So we don't!
 727         QApplication::setDoubleClickInterval(300);
 728 #endif
 729
 730         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 731
 732         // needs to be done before reading lyxrc
 733         QWidget w;
 734         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 735
 736         guiApp = this;
 737
 738         // Set the cache to 5120 kilobytes which corresponds to screen size of
 739         // 1280 by 1024 pixels with a color depth of 32 bits.
 740         QPixmapCache::setCacheLimit(5120);
 741
 742         // Initialize RC Fonts
 743         if (lyxrc.roman_font_name.empty())
 744                 lyxrc.roman_font_name = fromqstr(romanFontName());
 745
 746         if (lyxrc.sans_font_name.empty())
 747                 lyxrc.sans_font_name = fromqstr(sansFontName());
 748
 749         if (lyxrc.typewriter_font_name.empty())
 750                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 751
 752         d->general_timer_.setInterval(500);
 753         connect(&d->general_timer_, SIGNAL(timeout()),
 754                 this, SLOT(handleRegularEvents()));
 755         d->general_timer_.start();
 756 }
 757
 758
 759 GuiApplication * theGuiApp()
 760 {
 761         return dynamic_cast<GuiApplication *>(theApp());
 762 }
 763
 764
 765 void GuiApplication::clearSession()
 766 {
 767         QSettings settings;
 768         settings.clear();
 769 }
 770
 771
 772 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 773 {
 774         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 775 }
 776
 777
 778
 779 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 780 {
 781         bool enable = true;
 782
 783         switch(cmd.action) {
 784
 785         case LFUN_WINDOW_CLOSE:
 786                 enable = d->views_.size() > 0;
 787                 break;
 788
 789         case LFUN_BUFFER_NEW:
 790         case LFUN_BUFFER_NEW_TEMPLATE:
 791         case LFUN_FILE_OPEN:
 792         case LFUN_SCREEN_FONT_UPDATE:
 793         case LFUN_SET_COLOR:
 794         case LFUN_WINDOW_NEW:
 795         case LFUN_LYX_QUIT:
 796                 enable = true;
 797                 break;
 798
 799         default:
 800                 return false;
 801         }
 802
 803         if (!enable)
 804                 flag.setEnabled(false);
 805
 806         return true;
 807 }
 808
 809
 810 bool GuiApplication::dispatch(FuncRequest const & cmd)
 811 {
 812         switch (cmd.action) {
 813
 814         case LFUN_WINDOW_NEW:
 815                 createView(toqstr(cmd.argument()));
 816                 break;
 817
 818         case LFUN_WINDOW_CLOSE:
 819                 // update bookmark pit of the current buffer before window close
 820                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 821                         theLyXFunc().gotoBookmark(i+1, false, false);
 822                 current_view_->close();
 823                 break;
 824
 825         case LFUN_LYX_QUIT:
 826                 // quitting is triggered by the gui code
 827                 // (leaving the event loop).
 828                 if (current_view_)
 829                         current_view_->message(from_utf8(N_("Exiting.")));
 830                 if (closeAllViews())
 831                         quit();
 832                 break;
 833
 834         case LFUN_SCREEN_FONT_UPDATE: {
 835                 // handle the screen font changes.
 836                 d->font_loader_.update();
 837                 // Backup current_view_
 838                 GuiView * view = current_view_;
 839                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 840                 // to skip the refresh.
 841                 current_view_ = 0;
 842                 BufferList::iterator it = theBufferList().begin();
 843                 BufferList::iterator const end = theBufferList().end();
 844                 for (; it != end; ++it)
 845                         (*it)->changed();
 846                 // Restore current_view_
 847                 current_view_ = view;
 848                 break;
 849         }
 850
 851         case LFUN_BUFFER_NEW:
 852                 if (d->views_.empty()
 853                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 854                         createView(QString(), false); // keep hidden
 855                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 856                         current_view_->show();
 857                         setActiveWindow(current_view_);
 858                 } else {
 859                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 860                 }
 861                 break;
 862
 863         case LFUN_BUFFER_NEW_TEMPLATE:
 864                 if (d->views_.empty()
 865                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 866                         createView();
 867                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 868                         if (!current_view_->buffer())
 869                                 current_view_->close();
 870                 } else {
 871                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 872                 }
 873                 break;
 874
 875         case LFUN_FILE_OPEN:
 876                 if (d->views_.empty()
 877                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 878                         string const fname = to_utf8(cmd.argument());
 879                         // We want the ui session to be saved per document and not per
 880                         // window number. The filename crc is a good enough identifier.
 881                         boost::crc_32_type crc;
 882                         crc = for_each(fname.begin(), fname.end(), crc);
 883                         createView(crc.checksum());
 884                         current_view_->openDocument(fname);
 885                         if (current_view_ && !current_view_->buffer())
 886                                 current_view_->close();
 887                 } else
 888                         current_view_->openDocument(to_utf8(cmd.argument()));
 889                 break;
 890
 891         case LFUN_SET_COLOR: {
 892                 string lyx_name;
 893                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 894                 if (lyx_name.empty() || x11_name.empty()) {
 895                         current_view_->message(
 896                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 897                         break;
 898                 }
 899
 900                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 901                 bool const graphicsbg_changed = lyx_name == graphicsbg
 902                         && x11_name != graphicsbg;
 903                 if (graphicsbg_changed) {
 904                         // FIXME: The graphics cache no longer has a changeDisplay method.
 905 #if 0
 906                         graphics::GCache::get().changeDisplay(true);
 907 #endif
 908                 }
 909
 910                 if (!lcolor.setColor(lyx_name, x11_name)) {
 911                         current_view_->message(
 912                                         bformat(_("Set-color \"%1$s\" failed "
 913                                                                "- color is undefined or "
 914                                                                "may not be redefined"),
 915                                                                    from_utf8(lyx_name)));
 916                         break;
 917                 }
 918                 // Make sure we don't keep old colors in cache.
 919                 d->color_cache_.clear();
 920                 break;
 921         }
 922
 923         default:
 924                 // Notify the caller that the action has not been dispatched.
 925                 return false;
 926         }
 927
 928         // The action has been dispatched.
 929         return true;
 930 }
 931
 932
 933 void GuiApplication::dispatchDelayed(FuncRequest const & func)
 934 {
 935         d->func_request_queue_.push(func);
 936         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
 937 }
 938
 939
 940 void GuiApplication::resetGui()
 941 {
 942         // Set the language defined by the user.
 943         setGuiLanguage();
 944
 945         // Read menus
 946         if (!readUIFile(toqstr(lyxrc.ui_file)))
 947                 // Gives some error box here.
 948                 return;
 949
 950         if (d->global_menubar_)
 951                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
 952
 953         QHash<int, GuiView *>::iterator it;
 954         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 955                 GuiView * gv = *it;
 956                 gv->setLayoutDirection(layoutDirection());
 957                 gv->resetDialogs();
 958         }
 959
 960         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 961 }
 962
 963
 964 void GuiApplication::createView(int view_id)
 965 {
 966         createView(QString(), true, view_id);
 967 }
 968
 969
 970 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 971         int view_id)
 972 {
 973         // release the keyboard which might have been grabed by the global
 974         // menubar on Mac to catch shortcuts even without any GuiView.
 975         if (d->global_menubar_)
 976                 d->global_menubar_->releaseKeyboard();
 977
 978         // create new view
 979         int id = view_id;
 980         if (id == 0) {
 981                 while (d->views_.find(id) != d->views_.end())
 982                         id++;
 983         }
 984         LYXERR(Debug::GUI, "About to create new window with ID " << id);
 985         GuiView * view = new GuiView(id);
 986         // register view
 987         d->views_[id] = view;
 988
 989         if (autoShow) {
 990                 view->show();
 991                 setActiveWindow(view);
 992         }
 993
 994         if (!geometry_arg.isEmpty()) {
 995 #ifdef Q_WS_WIN
 996                 int x, y;
 997                 int w, h;
 998                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 999                 re.indexIn(geometry_arg);
1000                 w = re.cap(1).toInt();
1001                 h = re.cap(2).toInt();
1002                 x = re.cap(3).toInt();
1003                 y = re.cap(4).toInt();
1004                 view->setGeometry(x, y, w, h);
1005 #endif
1006         }
1007         view->setFocus();
1008 }
1009
1010
1011 Clipboard & GuiApplication::clipboard()
1012 {
1013         return d->clipboard_;
1014 }
1015
1016
1017 Selection & GuiApplication::selection()
1018 {
1019         return d->selection_;
1020 }
1021
1022
1023 FontLoader & GuiApplication::fontLoader()
1024 {
1025         return d->font_loader_;
1026 }
1027
1028
1029 Toolbars const & GuiApplication::toolbars() const
1030 {
1031         return d->toolbars_;
1032 }
1033
1034
1035 Toolbars & GuiApplication::toolbars()
1036 {
1037         return d->toolbars_;
1038 }
1039
1040
1041 Menus const & GuiApplication::menus() const
1042 {
1043         return d->menus_;
1044 }
1045
1046
1047 Menus & GuiApplication::menus()
1048 {
1049         return d->menus_;
1050 }
1051
1052
1053 QList<int> GuiApplication::viewIds() const
1054 {
1055         return d->views_.keys();
1056 }
1057
1058
1059 ColorCache & GuiApplication::colorCache()
1060 {
1061         return d->color_cache_;
1062 }
1063
1064
1065 int GuiApplication::exec()
1066 {
1067         // asynchronously handle batch commands. This event will be in
1068         // the event queue in front of other asynchronous events. Hence,
1069         // we can assume in the latter that the gui is setup already.
1070         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1071
1072         return QApplication::exec();
1073 }
1074
1075
1076 void GuiApplication::exit(int status)
1077 {
1078         QApplication::exit(status);
1079 }
1080
1081
1082 void GuiApplication::setGuiLanguage()
1083 {
1084         // Set the language defined by the user.
1085         setRcGuiLanguage();
1086
1087         QString const default_language = toqstr(Messages::defaultLanguage());
1088         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1089         QLocale const default_locale(default_language);
1090         QLocale::setDefault(default_locale);
1091
1092         // install translation file for Qt built-in dialogs
1093         QString const language_name = QString("qt_") + default_locale.name();
1094
1095         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1096         // Short-named translator can be loaded from a long name, but not the
1097         // opposite. Therefore, long name should be used without truncation.
1098         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1099         if (!d->qt_trans_.load(language_name,
1100                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1101                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1102                         << language_name);
1103         } else {
1104                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1105                         << language_name);
1106         }
1107
1108         switch (default_locale.language()) {
1109         case QLocale::Arabic :
1110         case QLocale::Hebrew :
1111         case QLocale::Persian :
1112         case QLocale::Urdu :
1113         setLayoutDirection(Qt::RightToLeft);
1114                 break;
1115         default:
1116         setLayoutDirection(Qt::LeftToRight);
1117         }
1118 }
1119
1120
1121 void GuiApplication::processFuncRequestQueue()
1122 {
1123         while (!d->func_request_queue_.empty()) {
1124                 lyx::dispatch(d->func_request_queue_.back());
1125                 d->func_request_queue_.pop();
1126         }
1127 }
1128
1129
1130 void GuiApplication::execBatchCommands()
1131 {
1132         setGuiLanguage();
1133
1134         // Read menus
1135         if (!readUIFile(toqstr(lyxrc.ui_file)))
1136                 // Gives some error box here.
1137                 return;
1138
1139 #ifdef Q_WS_MACX
1140         // Create the global default menubar which is shown for the dialogs
1141         // and if no GuiView is visible.
1142         // This must be done after the session was recovered to know the "last files".
1143         d->global_menubar_ = new GlobalMenuBar();
1144         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1145 #endif
1146
1147         lyx::execBatchCommands();
1148 }
1149
1150
1151 QAbstractItemModel * GuiApplication::languageModel()
1152 {
1153         if (d->language_model_)
1154                 return d->language_model_;
1155
1156         QStandardItemModel * lang_model = new QStandardItemModel(this);
1157         lang_model->insertColumns(0, 1);
1158         int current_row;
1159         Languages::const_iterator it = languages.begin();
1160         Languages::const_iterator end = languages.end();
1161         for (; it != end; ++it) {
1162                 current_row = lang_model->rowCount();
1163                 lang_model->insertRows(current_row, 1);
1164                 QModelIndex item = lang_model->index(current_row, 0);
1165                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1166                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1167         }
1168         d->language_model_ = new QSortFilterProxyModel(this);
1169         d->language_model_->setSourceModel(lang_model);
1170 #if QT_VERSION >= 0x040300
1171         d->language_model_->setSortLocaleAware(true);
1172 #endif
1173         return d->language_model_;
1174 }
1175
1176
1177 void GuiApplication::restoreGuiSession()
1178 {
1179         if (!lyxrc.load_session)
1180                 return;
1181
1182         Session & session = theSession();
1183         vector<FileName> const & lastopened = session.lastOpened().getfiles();
1184         // do not add to the lastfile list since these files are restored from
1185         // last session, and should be already there (regular files), or should
1186         // not be added at all (help files).
1187         for_each(lastopened.begin(), lastopened.end(),
1188                 bind(&GuiView::loadDocument, current_view_, _1, false));
1189
1190         // clear this list to save a few bytes of RAM
1191         session.lastOpened().clear();
1192 }
1193
1194
1195 QString const GuiApplication::romanFontName()
1196 {
1197         QFont font;
1198         font.setKerning(false);
1199         font.setStyleHint(QFont::Serif);
1200         font.setFamily("serif");
1201
1202         return QFontInfo(font).family();
1203 }
1204
1205
1206 QString const GuiApplication::sansFontName()
1207 {
1208         QFont font;
1209         font.setKerning(false);
1210         font.setStyleHint(QFont::SansSerif);
1211         font.setFamily("sans");
1212
1213         return QFontInfo(font).family();
1214 }
1215
1216
1217 QString const GuiApplication::typewriterFontName()
1218 {
1219         QFont font;
1220         font.setKerning(false);
1221         font.setStyleHint(QFont::TypeWriter);
1222         font.setFamily("monospace");
1223
1224         return QFontInfo(font).family();
1225 }
1226
1227
1228 void GuiApplication::handleRegularEvents()
1229 {
1230         ForkedCallsController::handleCompletedProcesses();
1231 }
1232
1233
1234 bool GuiApplication::event(QEvent * e)
1235 {
1236         switch(e->type()) {
1237         case QEvent::FileOpen: {
1238                 // Open a file; this happens only on Mac OS X for now.
1239                 //
1240                 // We do this asynchronously because on startup the batch
1241                 // commands are not executed here yet and the gui is not ready
1242                 // therefore.
1243                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1244                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
1245                 e->accept();
1246                 return true;
1247         }
1248         default:
1249                 return QApplication::event(e);
1250         }
1251 }
1252
1253
1254 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1255 {
1256         try {
1257                 return QApplication::notify(receiver, event);
1258         }
1259         catch (ExceptionMessage const & e) {
1260                 switch(e.type_) {
1261                 case ErrorException:
1262                         emergencyCleanup();
1263                         setQuitOnLastWindowClosed(false);
1264                         closeAllViews();
1265                         Alert::error(e.title_, e.details_);
1266 #ifndef NDEBUG
1267                         // Properly crash in debug mode in order to get a useful backtrace.
1268                         abort();
1269 #endif
1270                         // In release mode, try to exit gracefully.
1271                         this->exit(1);
1272
1273                 case BufferException: {
1274                         Buffer * buf = current_view_->buffer();
1275                         docstring details = e.details_ + '\n';
1276                         details += theBufferList().emergencyWrite(buf);
1277                         theBufferList().release(buf);
1278                         details += "\n" + _("The current document was closed.");
1279                         Alert::error(e.title_, details);
1280                         return false;
1281                 }
1282                 case WarningException:
1283                         Alert::warning(e.title_, e.details_);
1284                         return false;
1285                 }
1286         }
1287         catch (exception const & e) {
1288                 docstring s = _("LyX has caught an exception, it will now "
1289                         "attempt to save all unsaved documents and exit."
1290                         "\n\nException: ");
1291                 s += from_ascii(e.what());
1292                 Alert::error(_("Software exception Detected"), s);
1293                 lyx_exit(1);
1294         }
1295         catch (...) {
1296                 docstring s = _("LyX has caught some really weird exception, it will "
1297                         "now attempt to save all unsaved documents and exit.");
1298                 Alert::error(_("Software exception Detected"), s);
1299                 lyx_exit(1);
1300         }
1301
1302         return false;
1303 }
1304
1305
1306 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1307 {
1308         QColor const & qcol = d->color_cache_.get(col);
1309         if (!qcol.isValid()) {
1310                 rgbcol.r = 0;
1311                 rgbcol.g = 0;
1312                 rgbcol.b = 0;
1313                 return false;
1314         }
1315         rgbcol.r = qcol.red();
1316         rgbcol.g = qcol.green();
1317         rgbcol.b = qcol.blue();
1318         return true;
1319 }
1320
1321
1322 string const GuiApplication::hexName(ColorCode col)
1323 {
1324         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1325 }
1326
1327
1328 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1329 {
1330         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1331         d->socket_notifiers_[fd] = sn;
1332         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1333 }
1334
1335
1336 void GuiApplication::socketDataReceived(int fd)
1337 {
1338         d->socket_notifiers_[fd]->func_();
1339 }
1340
1341
1342 void GuiApplication::unregisterSocketCallback(int fd)
1343 {
1344         d->socket_notifiers_.take(fd)->setEnabled(false);
1345 }
1346
1347
1348 void GuiApplication::commitData(QSessionManager & sm)
1349 {
1350         /// The implementation is required to avoid an application exit
1351         /// when session state save is triggered by session manager.
1352         /// The default implementation sends a close event to all
1353         /// visible top level widgets when session managment allows
1354         /// interaction.
1355         /// We are changing that to close all wiew one by one.
1356         /// FIXME: verify if the default implementation is enough now.
1357         if (sm.allowsInteraction() && !closeAllViews())
1358                 sm.cancel();
1359 }
1360
1361
1362 void GuiApplication::unregisterView(GuiView * gv)
1363 {
1364         LASSERT(d->views_[gv->id()] == gv, /**/);
1365         d->views_.remove(gv->id());
1366         if (current_view_ == gv) {
1367                 current_view_ = 0;
1368                 theLyXFunc().setLyXView(0);
1369         }
1370 }
1371
1372
1373 bool GuiApplication::closeAllViews()
1374 {
1375         if (d->views_.empty())
1376                 return true;
1377
1378         QList<GuiView *> views = d->views_.values();
1379         foreach (GuiView * view, views) {
1380                 if (!view->close())
1381                         return false;
1382         }
1383
1384         d->views_.clear();
1385         return true;
1386 }
1387
1388
1389 GuiView & GuiApplication::view(int id) const
1390 {
1391         LASSERT(d->views_.contains(id), /**/);
1392         return *d->views_.value(id);
1393 }
1394
1395
1396 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1397 {
1398         QList<GuiView *> views = d->views_.values();
1399         foreach (GuiView * view, views)
1400                 view->hideDialog(name, inset);
1401 }
1402
1403
1404 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1405 {
1406         Buffer const * buffer_ = 0;
1407         QHash<int, GuiView *>::iterator end = d->views_.end();
1408         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1409                 if (Buffer const * ptr = (*it)->updateInset(inset))
1410                         buffer_ = ptr;
1411         }
1412         return buffer_;
1413 }
1414
1415
1416 bool GuiApplication::searchMenu(FuncRequest const & func,
1417         docstring_list & names) const
1418 {
1419         return d->menus_.searchMenu(func, names);
1420 }
1421
1422
1423 bool GuiApplication::readUIFile(QString const & name, bool include)
1424 {
1425         enum {
1426                 ui_menuset = 1,
1427                 ui_toolbars,
1428                 ui_toolbarset,
1429                 ui_include,
1430                 ui_last
1431         };
1432
1433         LexerKeyword uitags[] = {
1434                 { "include", ui_include },
1435                 { "menuset", ui_menuset },
1436                 { "toolbars", ui_toolbars },
1437                 { "toolbarset", ui_toolbarset }
1438         };
1439
1440         LYXERR(Debug::INIT, "About to read " << name << "...");
1441
1442         FileName ui_path;
1443         if (include) {
1444                 ui_path = libFileSearch("ui", name, "inc");
1445                 if (ui_path.empty())
1446                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1447         } else {
1448                 ui_path = libFileSearch("ui", name, "ui");
1449         }
1450
1451         if (ui_path.empty()) {
1452                 LYXERR(Debug::INIT, "Could not find " << name);
1453                 Alert::warning(_("Could not find UI definition file"),
1454                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1455                                    "Please check your installation."), qstring_to_ucs4(name)));
1456                 return false;
1457         }
1458
1459
1460         // Ensure that a file is read only once (prevents include loops)
1461         static QStringList uifiles;
1462         QString const uifile = toqstr(ui_path.absFilename());
1463         if (uifiles.contains(uifile)) {
1464                 if (!include) {
1465                         // We are reading again the top uifile so reset the safeguard:
1466                         uifiles.clear();
1467                         d->menus_.reset();
1468                         d->toolbars_.reset();
1469                 } else {
1470                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1471                                 << "Is this an include loop?");
1472                         return false;
1473                 }
1474         }
1475         uifiles.push_back(uifile);
1476
1477         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1478
1479         Lexer lex(uitags);
1480         lex.setFile(ui_path);
1481         if (!lex.isOK()) {
1482                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1483                        << endl;
1484         }
1485
1486         if (lyxerr.debugging(Debug::PARSER))
1487                 lex.printTable(lyxerr);
1488
1489         while (lex.isOK()) {
1490                 switch (lex.lex()) {
1491                 case ui_include: {
1492                         lex.next(true);
1493                         QString const file = toqstr(lex.getString());
1494                         if (!readUIFile(file, true))
1495                                 return false;
1496                         break;
1497                 }
1498                 case ui_menuset:
1499                         d->menus_.read(lex);
1500                         break;
1501
1502                 case ui_toolbarset:
1503                         d->toolbars_.readToolbars(lex);
1504                         break;
1505
1506                 case ui_toolbars:
1507                         d->toolbars_.readToolbarSettings(lex);
1508                         break;
1509
1510                 default:
1511                         if (!rtrim(lex.getString()).empty())
1512                                 lex.printError("LyX::ReadUIFile: "
1513                                                "Unknown menu tag: `$$Token'");
1514                         break;
1515                 }
1516         }
1517
1518         if (include)
1519                 return true;
1520
1521         QSettings settings;
1522         settings.beginGroup("ui_files");
1523         bool touched = false;
1524         for (int i = 0; i != uifiles.size(); ++i) {
1525                 QFileInfo fi(uifiles[i]);
1526                 QDateTime const date_value = fi.lastModified();
1527                 QString const name_key = QString::number(i);
1528                 if (!settings.contains(name_key)
1529                  || settings.value(name_key).toString() != uifiles[i]
1530                  || settings.value(name_key + "/date").toDateTime() != date_value) {
1531                         touched = true;
1532                         settings.setValue(name_key, uifiles[i]);
1533                         settings.setValue(name_key + "/date", date_value);
1534                 }
1535         }
1536         settings.endGroup();
1537         if (touched)
1538                 settings.remove("views");
1539
1540         return true;
1541 }
1542
1543
1544 void GuiApplication::onLastWindowClosed()
1545 {
1546         if (d->global_menubar_)
1547                 d->global_menubar_->grabKeyboard();
1548 }
1549
1550
1551 ////////////////////////////////////////////////////////////////////////
1552 //
1553 // X11 specific stuff goes here...
1554
1555 #ifdef Q_WS_X11
1556 bool GuiApplication::x11EventFilter(XEvent * xev)
1557 {
1558         if (!current_view_)
1559                 return false;
1560
1561         switch (xev->type) {
1562         case SelectionRequest: {
1563                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1564                         break;
1565                 LYXERR(Debug::SELECTION, "X requested selection.");
1566                 BufferView * bv = current_view_->view();
1567                 if (bv) {
1568                         docstring const sel = bv->requestSelection();
1569                         if (!sel.empty())
1570                                 d->selection_.put(sel);
1571                 }
1572                 break;
1573         }
1574         case SelectionClear: {
1575                 if (xev->xselectionclear.selection != XA_PRIMARY)
1576                         break;
1577                 LYXERR(Debug::SELECTION, "Lost selection.");
1578                 BufferView * bv = current_view_->view();
1579                 if (bv)
1580                         bv->clearSelection();
1581                 break;
1582         }
1583         }
1584         return false;
1585 }
1586 #endif
1587
1588 } // namespace frontend
1589
1590
1591 void hideDialogs(std::string const & name, Inset * inset)
1592 {
1593         if (theApp())
1594                 theApp()->hideDialogs(name, inset);
1595 }
1596
1597
1598 ////////////////////////////////////////////////////////////////////
1599 //
1600 // Font stuff
1601 //
1602 ////////////////////////////////////////////////////////////////////
1603
1604 frontend::FontLoader & theFontLoader()
1605 {
1606         LASSERT(frontend::guiApp, /**/);
1607         return frontend::guiApp->fontLoader();
1608 }
1609
1610
1611 frontend::FontMetrics const & theFontMetrics(Font const & f)
1612 {
1613         return theFontMetrics(f.fontInfo());
1614 }
1615
1616
1617 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1618 {
1619         LASSERT(frontend::guiApp, /**/);
1620         return frontend::guiApp->fontLoader().metrics(f);
1621 }
1622
1623
1624 ////////////////////////////////////////////////////////////////////
1625 //
1626 // Misc stuff
1627 //
1628 ////////////////////////////////////////////////////////////////////
1629
1630 frontend::Clipboard & theClipboard()
1631 {
1632         LASSERT(frontend::guiApp, /**/);
1633         return frontend::guiApp->clipboard();
1634 }
1635
1636
1637 frontend::Selection & theSelection()
1638 {
1639         LASSERT(frontend::guiApp, /**/);
1640         return frontend::guiApp->selection();
1641 }
1642
1643
1644 } // namespace lyx
1645
1646 #include "moc_GuiApplication.cpp"