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 "ColorSet.h"
  19 #include "GuiClipboard.h"
  20 #include "GuiImage.h"
  21 #include "GuiKeySymbol.h"
  22 #include "GuiSelection.h"
  23 #include "GuiView.h"
  24 #include "Menus.h"
  25 #include "qt_helpers.h"
  26 #include "Toolbars.h"
  27
  28 #include "frontends/alert.h"
  29 #include "frontends/Application.h"
  30 #include "frontends/FontLoader.h"
  31 #include "frontends/FontMetrics.h"
  32
  33 #include "Buffer.h"
  34 #include "BufferList.h"
  35 #include "BufferView.h"
  36 #include "Color.h"
  37 #include "Font.h"
  38 #include "FuncRequest.h"
  39 #include "FuncStatus.h"
  40 #include "Language.h"
  41 #include "Lexer.h"
  42 #include "LyX.h"
  43 #include "LyXAction.h"
  44 #include "LyXFunc.h"
  45 #include "LyXRC.h"
  46 #include "Session.h"
  47 #include "version.h"
  48
  49 #include "support/lassert.h"
  50 #include "support/debug.h"
  51 #include "support/ExceptionMessage.h"
  52 #include "support/FileName.h"
  53 #include "support/filetools.h"
  54 #include "support/foreach.h"
  55 #include "support/ForkedCalls.h"
  56 #include "support/gettext.h"
  57 #include "support/lstrings.h"
  58 #include "support/lyxalgo.h" // sorted
  59 #include "support/Messages.h"
  60 #include "support/os.h"
  61 #include "support/Package.h"
  62
  63 #ifdef Q_WS_MACX
  64 #include "support/linkback/LinkBackProxy.h"
  65 #endif
  66
  67 #include <queue>
  68
  69 #include <QByteArray>
  70 #include <QClipboard>
  71 #include <QDateTime>
  72 #include <QDir>
  73 #include <QEventLoop>
  74 #include <QFileOpenEvent>
  75 #include <QFileInfo>
  76 #include <QHash>
  77 #include <QIcon>
  78 #include <QImageReader>
  79 #include <QLocale>
  80 #include <QLibraryInfo>
  81 #include <QList>
  82 #include <QMacPasteboardMime>
  83 #include <QMenuBar>
  84 #include <QMimeData>
  85 #include <QObject>
  86 #include <QPixmap>
  87 #include <QPixmapCache>
  88 #include <QRegExp>
  89 #include <QSessionManager>
  90 #include <QSettings>
  91 #include <QSocketNotifier>
  92 #include <QSortFilterProxyModel>
  93 #include <QStandardItemModel>
  94 #include <QTextCodec>
  95 #include <QTimer>
  96 #include <QTranslator>
  97 #include <QWidget>
  98
  99 #ifdef Q_WS_X11
 100 #include <X11/Xatom.h>
 101 #include <X11/Xlib.h>
 102 #undef CursorShape
 103 #undef None
 104 #endif
 105
 106 #ifdef Q_WS_WIN
 107 #include <QWindowsMime>
 108 #ifdef Q_CC_GNU
 109 #include <wtypes.h>
 110 #endif
 111 #include <objidl.h>
 112 #endif // Q_WS_WIN
 113
 114 #include <boost/bind.hpp>
 115 #include <boost/crc.hpp>
 116
 117 #include <exception>
 118 #include <vector>
 119
 120 using namespace std;
 121 using namespace lyx::support;
 122
 123
 124 static void initializeResources()
 125 {
 126         static bool initialized = false;
 127         if (!initialized) {
 128                 Q_INIT_RESOURCE(Resources);
 129                 initialized = true;
 130         }
 131 }
 132
 133
 134 namespace lyx {
 135
 136 frontend::Application * createApplication(int & argc, char * argv[])
 137 {
 138 #ifndef Q_WS_X11
 139         // prune -geometry argument(s) by shifting
 140         // the following ones 2 places down.
 141         for (int i = 0 ; i < argc ; ++i) {
 142                 if (strcmp(argv[i], "-geometry") == 0) {
 143                         int const remove = (i+1) < argc ? 2 : 1;
 144                         argc -= remove;
 145                         for (int j = i; j < argc; ++j)
 146                                 argv[j] = argv[j + remove];
 147                         --i;
 148                 }
 149         }
 150 #endif
 151         return new frontend::GuiApplication(argc, argv);
 152 }
 153
 154 namespace frontend {
 155
 156
 157 /// Return the list of loadable formats.
 158 vector<string> loadableImageFormats()
 159 {
 160         vector<string> fmts;
 161
 162         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 163
 164         LYXERR(Debug::GRAPHICS,
 165                 "\nThe image loader can load the following directly:\n");
 166
 167         if (qt_formats.empty())
 168                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 169
 170         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 171
 172                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 173
 174                 string ext = ascii_lowercase((const char *) *it);
 175                 // special case
 176                 if (ext == "jpeg")
 177                         ext = "jpg";
 178                 fmts.push_back(ext);
 179         }
 180
 181         return fmts;
 182 }
 183
 184
 185 ////////////////////////////////////////////////////////////////////////
 186 //
 187 // Icon loading support code
 188 //
 189 ////////////////////////////////////////////////////////////////////////
 190
 191 namespace {
 192
 193 struct PngMap {
 194         QString key;
 195         QString value;
 196 };
 197
 198
 199 bool operator<(PngMap const & lhs, PngMap const & rhs)
 200 {
 201         return lhs.key < rhs.key;
 202 }
 203
 204
 205 class CompareKey {
 206 public:
 207         CompareKey(QString const & name) : name_(name) {}
 208         bool operator()(PngMap const & other) const { return other.key == name_; }
 209 private:
 210         QString const name_;
 211 };
 212
 213
 214 // this must be sorted alphabetically
 215 // Upper case comes before lower case
 216 PngMap sorted_png_map[] = {
 217         { "Bumpeq", "bumpeq2" },
 218         { "Cap", "cap2" },
 219         { "Cup", "cup2" },
 220         { "Delta", "delta2" },
 221         { "Downarrow", "downarrow2" },
 222         { "Gamma", "gamma2" },
 223         { "Lambda", "lambda2" },
 224         { "Leftarrow", "leftarrow2" },
 225         { "Leftrightarrow", "leftrightarrow2" },
 226         { "Longleftarrow", "longleftarrow2" },
 227         { "Longleftrightarrow", "longleftrightarrow2" },
 228         { "Longrightarrow", "longrightarrow2" },
 229         { "Omega", "omega2" },
 230         { "Phi", "phi2" },
 231         { "Pi", "pi2" },
 232         { "Psi", "psi2" },
 233         { "Rightarrow", "rightarrow2" },
 234         { "Sigma", "sigma2" },
 235         { "Subset", "subset2" },
 236         { "Supset", "supset2" },
 237         { "Theta", "theta2" },
 238         { "Uparrow", "uparrow2" },
 239         { "Updownarrow", "updownarrow2" },
 240         { "Upsilon", "upsilon2" },
 241         { "Vdash", "vdash3" },
 242         { "Vert", "vert2" },
 243         { "Xi", "xi2" },
 244         { "nLeftarrow", "nleftarrow2" },
 245         { "nLeftrightarrow", "nleftrightarrow2" },
 246         { "nRightarrow", "nrightarrow2" },
 247         { "nVDash", "nvdash3" },
 248         { "nvDash", "nvdash2" },
 249         { "textrm \\AA", "textrm_AA"},
 250         { "textrm \\O", "textrm_O"},
 251         { "vDash", "vdash2" }
 252 };
 253
 254 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 255
 256
 257 QString findPng(QString const & name)
 258 {
 259         PngMap const * const begin = sorted_png_map;
 260         PngMap const * const end = begin + nr_sorted_png_map;
 261         LASSERT(sorted(begin, end), /**/);
 262
 263         PngMap const * const it = find_if(begin, end, CompareKey(name));
 264
 265         QString png_name;
 266         if (it != end) {
 267                 png_name = it->value;
 268         } else {
 269                 png_name = name;
 270                 png_name.replace('_', "underscore");
 271                 png_name.replace(' ', '_');
 272
 273                 // This way we can have "math-delim { }" on the toolbar.
 274                 png_name.replace('(', "lparen");
 275                 png_name.replace(')', "rparen");
 276                 png_name.replace('[', "lbracket");
 277                 png_name.replace(']', "rbracket");
 278                 png_name.replace('{', "lbrace");
 279                 png_name.replace('}', "rbrace");
 280                 png_name.replace('|', "bars");
 281                 png_name.replace(',', "thinspace");
 282                 png_name.replace(':', "mediumspace");
 283                 png_name.replace(';', "thickspace");
 284                 png_name.replace('!', "negthinspace");
 285         }
 286
 287         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 288                 << "Looking for math PNG called \"" << png_name << '"');
 289         return png_name;
 290 }
 291
 292 } // namespace anon
 293
 294
 295 QString iconName(FuncRequest const & f, bool unknown)
 296 {
 297         initializeResources();
 298         QString name1;
 299         QString name2;
 300         QString path;
 301         switch (f.action) {
 302         case LFUN_MATH_INSERT:
 303                 if (!f.argument().empty()) {
 304                         path = "math/";
 305                         name1 = findPng(toqstr(f.argument()).mid(1));
 306                 }
 307                 break;
 308         case LFUN_MATH_DELIM:
 309         case LFUN_MATH_BIGDELIM:
 310                 path = "math/";
 311                 name1 = findPng(toqstr(f.argument()));
 312                 break;
 313         case LFUN_CALL:
 314                 path = "commands/";
 315                 name1 = toqstr(f.argument());
 316                 break;
 317         case LFUN_COMMAND_ALTERNATIVES: {
 318                 // use the first of the alternative commands
 319                 docstring firstcom;
 320                 docstring dummy = split(f.argument(), firstcom, ';');
 321                 name1 = toqstr(firstcom);
 322                 name1.replace(' ', '_');
 323                 break;
 324         }
 325         default:
 326                 name2 = toqstr(lyxaction.getActionName(f.action));
 327                 name1 = name2;
 328
 329                 if (!f.argument().empty()) {
 330                         name1 = name2 + ' ' + toqstr(f.argument());
 331                         name1.replace(' ', '_');
 332                         name1.replace('\\', "backslash");
 333                 }
 334         }
 335
 336         FileName fname = libFileSearch("images/" + path, name1, "png");
 337         if (fname.exists())
 338                 return toqstr(fname.absFilename());
 339
 340         fname = libFileSearch("images/" + path, name2, "png");
 341         if (fname.exists())
 342                 return toqstr(fname.absFilename());
 343
 344         path = ":/images/" + path;
 345         QDir res(path);
 346         if (!res.exists()) {
 347                 LYXERR0("Directory " << path << " not found in resource!");
 348                 return QString();
 349         }
 350         name1 += ".png";
 351         if (res.exists(name1))
 352                 return path + name1;
 353
 354         name2 += ".png";
 355         if (res.exists(name2))
 356                 return path + name2;
 357
 358         LYXERR(Debug::GUI, "Cannot find icon with filename "
 359                            << "\"" << name1 << "\""
 360                            << " or filename "
 361                            << "\"" << name2 << "\""
 362                            << " for command \""
 363                            << lyxaction.getActionName(f.action)
 364                            << '(' << to_utf8(f.argument()) << ")\"");
 365
 366         if (unknown) {
 367                 fname = libFileSearch(QString("images/"), "unknown", "png");
 368                 if (fname.exists())
 369                         return toqstr(fname.absFilename());
 370                 return QString(":/images/unknown.png");
 371         }
 372
 373         return QString();
 374 }
 375
 376 QPixmap getPixmap(QString const & path, QString const & name, QString const & ext)
 377 {
 378         QPixmap pixmap;
 379         FileName fname = libFileSearch(path, name, ext);
 380         QString path1 = toqstr(fname.absFilename());
 381         QString path2 = ":/" + path + name + "." + ext;
 382
 383         if (pixmap.load(path1)) {
 384                 return pixmap;
 385         }
 386         else if (pixmap.load(path2)) {
 387                 return pixmap;
 388         }
 389
 390         LYXERR0("Cannot load pixmap \""
 391                 << path << name << '.' << ext
 392                 << "\", please verify resource system!");
 393
 394         return QPixmap();
 395 }
 396
 397 QIcon getIcon(FuncRequest const & f, bool unknown)
 398 {
 399         QString icon = iconName(f, unknown);
 400         if (icon.isEmpty())
 401                 return QIcon();
 402
 403         //LYXERR(Debug::GUI, "Found icon: " << icon);
 404         QPixmap pm;
 405         if (!pm.load(icon)) {
 406                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 407                 return QIcon();
 408         }
 409
 410         return QIcon(pm);
 411 }
 412
 413
 414 ////////////////////////////////////////////////////////////////////////
 415 //
 416 // LyX server support code.
 417 //
 418 ////////////////////////////////////////////////////////////////////////
 419
 420 class SocketNotifier : public QSocketNotifier
 421 {
 422 public:
 423         /// connect a connection notification from the LyXServerSocket
 424         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 425                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 426         {}
 427
 428 public:
 429         /// The callback function
 430         Application::SocketCallback func_;
 431 };
 432
 433
 434 ////////////////////////////////////////////////////////////////////////
 435 //
 436 // Mac specific stuff goes here...
 437 //
 438 ////////////////////////////////////////////////////////////////////////
 439
 440 class MenuTranslator : public QTranslator
 441 {
 442 public:
 443         MenuTranslator(QObject * parent)
 444                 : QTranslator(parent)
 445         {}
 446
 447         QString translate(const char * /*context*/,
 448           const char * sourceText,
 449           const char * /*comment*/ = 0)
 450         {
 451                 string const s = sourceText;
 452                 if (s == N_("About %1") || s == N_("Preferences")
 453                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 454                         return qt_(s);
 455                 else
 456                         return QString();
 457         }
 458 };
 459
 460 class GlobalMenuBar : public QMenuBar
 461 {
 462 public:
 463         ///
 464         GlobalMenuBar() : QMenuBar(0) {}
 465
 466         ///
 467         bool event(QEvent * e)
 468         {
 469                 if (e->type() == QEvent::ShortcutOverride) {
 470                         //          && activeWindow() == 0) {
 471                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 472                         KeySymbol sym;
 473                         setKeySymbol(&sym, ke);
 474                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 475                         e->accept();
 476                         return true;
 477                 }
 478                 return false;
 479         }
 480 };
 481
 482 #ifdef Q_WS_MACX
 483 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 484
 485 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 486 {
 487 public:
 488         QMacPasteboardMimeGraphics()
 489                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 490         {}
 491
 492         QString convertorName() { return "Graphics"; }
 493
 494         QString flavorFor(QString const & mime)
 495         {
 496                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 497                 if (mime == pdfMimeType())
 498                         return QLatin1String("com.adobe.pdf");
 499                 return QString();
 500         }
 501
 502         QString mimeFor(QString flav)
 503         {
 504                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 505                 if (flav == QLatin1String("com.adobe.pdf"))
 506                         return pdfMimeType();
 507                 return QString();
 508         }
 509
 510         bool canConvert(QString const & mime, QString flav)
 511         {
 512                 return mimeFor(flav) == mime;
 513         }
 514
 515         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 516                 QString /*flav*/)
 517         {
 518                 if(data.count() > 1)
 519                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 520                 return data.first();
 521         }
 522
 523         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 524                 QVariant data, QString /*flav*/)
 525         {
 526                 QList<QByteArray> ret;
 527                 ret.append(data.toByteArray());
 528                 return ret;
 529         }
 530 };
 531 #endif
 532
 533 ///////////////////////////////////////////////////////////////
 534 //
 535 // You can find more platform specific stuff at the end of this file...
 536 //
 537 ///////////////////////////////////////////////////////////////
 538
 539 ////////////////////////////////////////////////////////////////////////
 540 // Windows specific stuff goes here...
 541
 542 #ifdef Q_WS_WIN
 543 // QWindowsMimeMetafile can only be compiled on Windows.
 544
 545 static FORMATETC cfFromMime(QString const & mimetype)
 546 {
 547         FORMATETC formatetc;
 548         if (mimetype == emfMimeType()) {
 549                 formatetc.cfFormat = CF_ENHMETAFILE;
 550                 formatetc.tymed = TYMED_ENHMF;
 551         } else if (mimetype == wmfMimeType()) {
 552                 formatetc.cfFormat = CF_METAFILEPICT;
 553                 formatetc.tymed = TYMED_MFPICT;
 554         }
 555         formatetc.ptd = 0;
 556         formatetc.dwAspect = DVASPECT_CONTENT;
 557         formatetc.lindex = -1;
 558         return formatetc;
 559 }
 560
 561
 562 class QWindowsMimeMetafile : public QWindowsMime {
 563 public:
 564         QWindowsMimeMetafile() {}
 565
 566         bool canConvertFromMime(FORMATETC const & formatetc,
 567                 QMimeData const * mimedata) const
 568         {
 569                 return false;
 570         }
 571
 572         bool canConvertToMime(QString const & mimetype,
 573                 IDataObject * pDataObj) const
 574         {
 575                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 576                         return false;
 577                 FORMATETC formatetc = cfFromMime(mimetype);
 578                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 579         }
 580
 581         bool convertFromMime(FORMATETC const & formatetc,
 582                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 583         {
 584                 return false;
 585         }
 586
 587         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 588                 QVariant::Type preferredType) const
 589         {
 590                 QByteArray data;
 591                 if (!canConvertToMime(mimetype, pDataObj))
 592                         return data;
 593
 594                 FORMATETC formatetc = cfFromMime(mimetype);
 595                 STGMEDIUM s;
 596                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 597                         return data;
 598
 599                 int dataSize;
 600                 if (s.tymed == TYMED_ENHMF) {
 601                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 602                         data.resize(dataSize);
 603                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 604                                 (LPBYTE)data.data());
 605                 } else if (s.tymed == TYMED_MFPICT) {
 606                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 607                         data.resize(dataSize);
 608                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 609                                 (LPBYTE)data.data());
 610                 }
 611                 data.detach();
 612                 ReleaseStgMedium(&s);
 613
 614                 return data;
 615         }
 616
 617
 618         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 619                 QMimeData const * mimedata) const
 620         {
 621                 QVector<FORMATETC> formats;
 622                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 623                         formats += cfFromMime(mimetype);
 624                 return formats;
 625         }
 626
 627         QString mimeForFormat(FORMATETC const & formatetc) const
 628         {
 629                 switch (formatetc.cfFormat) {
 630                 case CF_ENHMETAFILE:
 631                         return emfMimeType();
 632                 case CF_METAFILEPICT:
 633                         return wmfMimeType();
 634                 }
 635                 return QString();
 636         }
 637 };
 638
 639 #endif // Q_WS_WIN
 640
 641 ////////////////////////////////////////////////////////////////////////
 642 // GuiApplication::Private definition and implementation.
 643 ////////////////////////////////////////////////////////////////////////
 644
 645 struct GuiApplication::Private
 646 {
 647         Private(): language_model_(0), global_menubar_(0)
 648         {
 649         #ifdef Q_WS_WIN
 650                 /// WMF Mime handler for Windows clipboard.
 651                 wmf_mime_ = new QWindowsMimeMetafile();
 652         #endif
 653         }
 654
 655         ///
 656         QSortFilterProxyModel * language_model_;
 657         ///
 658         GuiClipboard clipboard_;
 659         ///
 660         GuiSelection selection_;
 661         ///
 662         FontLoader font_loader_;
 663         ///
 664         ColorCache color_cache_;
 665         ///
 666         QTranslator qt_trans_;
 667         ///
 668         QHash<int, SocketNotifier *> socket_notifiers_;
 669         ///
 670         Menus menus_;
 671         ///
 672         /// The global instance
 673         Toolbars toolbars_;
 674
 675         /// this timer is used for any regular events one wants to
 676         /// perform. at present it is used to check if forked processes
 677         /// are done.
 678         QTimer general_timer_;
 679
 680         /// delayed FuncRequests
 681         std::queue<FuncRequest> func_request_queue_;
 682
 683         /// Multiple views container.
 684         /**
 685         * Warning: This must not be a smart pointer as the destruction of the
 686         * object is handled by Qt when the view is closed
 687         * \sa Qt::WA_DeleteOnClose attribute.
 688         */
 689         QHash<int, GuiView *> views_;
 690
 691         /// Only used on mac.
 692         GlobalMenuBar * global_menubar_;
 693
 694 #ifdef Q_WS_MACX
 695         /// Linkback mime handler for MacOSX.
 696         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 697 #endif
 698
 699 #ifdef Q_WS_WIN
 700         /// WMF Mime handler for Windows clipboard.
 701         QWindowsMimeMetafile * wmf_mime_;
 702 #endif
 703 };
 704
 705
 706 GuiApplication * guiApp;
 707
 708 GuiApplication::~GuiApplication()
 709 {
 710 #ifdef Q_WS_MACX
 711         closeAllLinkBackLinks();
 712 #endif
 713         delete d;
 714 }
 715
 716
 717 GuiApplication::GuiApplication(int & argc, char ** argv)
 718         : QApplication(argc, argv), current_view_(0),
 719           d(new GuiApplication::Private)
 720 {
 721         QString app_name = "LyX";
 722         QCoreApplication::setOrganizationName(app_name);
 723         QCoreApplication::setOrganizationDomain("lyx.org");
 724         QCoreApplication::setApplicationName(lyx_package);
 725
 726         // Install translator for GUI elements.
 727         installTranslator(&d->qt_trans_);
 728
 729         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 730         // lyxrc setting for this in order to let the application stay resident.
 731         // But then we need some kind of dock icon, at least on Windows.
 732         /*
 733         if (lyxrc.quit_on_last_window_closed)
 734                 setQuitOnLastWindowClosed(false);
 735         */
 736 #ifdef Q_WS_MACX
 737         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 738         // seems to be the default case for applications like LyX.
 739         setQuitOnLastWindowClosed(false);
 740
 741         // This allows to translate the strings that appear in the LyX menu.
 742         /// A translator suitable for the entries in the LyX menu.
 743         /// Only needed with Qt/Mac.
 744         installTranslator(new MenuTranslator(this));
 745 #endif
 746
 747 #ifdef Q_WS_X11
 748         // doubleClickInterval() is 400 ms on X11 which is just too long.
 749         // On Windows and Mac OS X, the operating system's value is used.
 750         // On Microsoft Windows, calling this function sets the double
 751         // click interval for all applications. So we don't!
 752         QApplication::setDoubleClickInterval(300);
 753 #endif
 754
 755         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 756
 757         // needs to be done before reading lyxrc
 758         QWidget w;
 759         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 760
 761         guiApp = this;
 762
 763         // Set the cache to 5120 kilobytes which corresponds to screen size of
 764         // 1280 by 1024 pixels with a color depth of 32 bits.
 765         QPixmapCache::setCacheLimit(5120);
 766
 767         // Initialize RC Fonts
 768         if (lyxrc.roman_font_name.empty())
 769                 lyxrc.roman_font_name = fromqstr(romanFontName());
 770
 771         if (lyxrc.sans_font_name.empty())
 772                 lyxrc.sans_font_name = fromqstr(sansFontName());
 773
 774         if (lyxrc.typewriter_font_name.empty())
 775                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 776
 777         d->general_timer_.setInterval(500);
 778         connect(&d->general_timer_, SIGNAL(timeout()),
 779                 this, SLOT(handleRegularEvents()));
 780         d->general_timer_.start();
 781 }
 782
 783
 784 GuiApplication * theGuiApp()
 785 {
 786         return dynamic_cast<GuiApplication *>(theApp());
 787 }
 788
 789
 790 void GuiApplication::clearSession()
 791 {
 792         QSettings settings;
 793         settings.clear();
 794 }
 795
 796
 797 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 798 {
 799         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 800 }
 801
 802
 803 LyXView * GuiApplication::currentWindow()
 804 {
 805         return current_view_;
 806 }
 807
 808
 809 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 810 {
 811         bool enable = true;
 812
 813         switch(cmd.action) {
 814
 815         case LFUN_WINDOW_CLOSE:
 816                 enable = d->views_.size() > 0;
 817                 break;
 818
 819         case LFUN_BUFFER_NEW:
 820         case LFUN_BUFFER_NEW_TEMPLATE:
 821         case LFUN_FILE_OPEN:
 822         case LFUN_HELP_OPEN:
 823         case LFUN_SCREEN_FONT_UPDATE:
 824         case LFUN_SET_COLOR:
 825         case LFUN_WINDOW_NEW:
 826         case LFUN_LYX_QUIT:
 827                 enable = true;
 828                 break;
 829
 830         default:
 831                 return false;
 832         }
 833
 834         if (!enable)
 835                 flag.setEnabled(false);
 836
 837         return true;
 838 }
 839
 840
 841 bool GuiApplication::dispatch(FuncRequest const & cmd)
 842 {
 843         switch (cmd.action) {
 844
 845         case LFUN_WINDOW_NEW:
 846                 createView(toqstr(cmd.argument()));
 847                 break;
 848
 849         case LFUN_WINDOW_CLOSE:
 850                 // update bookmark pit of the current buffer before window close
 851                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 852                         theLyXFunc().gotoBookmark(i+1, false, false);
 853                 // clear the last opened list, because
 854                 // maybe this will end the session
 855                 theSession().lastOpened().clear();
 856                 current_view_->close();
 857                 break;
 858
 859         case LFUN_LYX_QUIT:
 860                 // quitting is triggered by the gui code
 861                 // (leaving the event loop).
 862                 if (current_view_)
 863                         current_view_->message(from_utf8(N_("Exiting.")));
 864                 if (closeAllViews())
 865                         quit();
 866                 break;
 867
 868         case LFUN_SCREEN_FONT_UPDATE: {
 869                 // handle the screen font changes.
 870                 d->font_loader_.update();
 871                 // Backup current_view_
 872                 GuiView * view = current_view_;
 873                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 874                 // to skip the refresh.
 875                 current_view_ = 0;
 876                 BufferList::iterator it = theBufferList().begin();
 877                 BufferList::iterator const end = theBufferList().end();
 878                 for (; it != end; ++it)
 879                         (*it)->changed();
 880                 // Restore current_view_
 881                 current_view_ = view;
 882                 break;
 883         }
 884
 885         case LFUN_BUFFER_NEW:
 886                 if (d->views_.empty()
 887                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 888                         createView(QString(), false); // keep hidden
 889                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 890                         current_view_->show();
 891                         setActiveWindow(current_view_);
 892                 } else {
 893                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 894                 }
 895                 break;
 896
 897         case LFUN_BUFFER_NEW_TEMPLATE:
 898                 if (d->views_.empty()
 899                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 900                         createView();
 901                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 902                         if (!current_view_->documentBufferView())
 903                                 current_view_->close();
 904                 } else {
 905                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 906                 }
 907                 break;
 908
 909         case LFUN_FILE_OPEN:
 910                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
 911                 if (d->views_.empty()
 912                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 913                         string const fname = to_utf8(cmd.argument());
 914                         // We want the ui session to be saved per document and not per
 915                         // window number. The filename crc is a good enough identifier.
 916                         boost::crc_32_type crc;
 917                         crc = for_each(fname.begin(), fname.end(), crc);
 918                         createView(crc.checksum());
 919                         current_view_->openDocument(fname);
 920                         if (current_view_ && !current_view_->documentBufferView())
 921                                 current_view_->close();
 922                 } else
 923                         current_view_->openDocument(to_utf8(cmd.argument()));
 924                 break;
 925
 926         case LFUN_HELP_OPEN: {
 927                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
 928                 if (current_view_ == 0)
 929                         createView();
 930                 string const arg = to_utf8(cmd.argument());
 931                 if (arg.empty()) {
 932                         current_view_->message(_("Missing argument"));
 933                         break;
 934                 }
 935                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
 936                 if (fname.empty())
 937                         fname = i18nLibFileSearch("examples", arg, "lyx");
 938
 939                 if (fname.empty()) {
 940                         lyxerr << "LyX: unable to find documentation file `"
 941                                 << arg << "'. Bad installation?" << endl;
 942                         break;
 943                 }
 944                 current_view_->message(bformat(_("Opening help file %1$s..."),
 945                         makeDisplayPath(fname.absFilename())));
 946                 Buffer * buf = current_view_->loadDocument(fname, false);
 947                 if (buf) {
 948                         current_view_->setBuffer(buf);
 949                         buf->updateLabels();
 950                         buf->errors("Parse");
 951                 }
 952                 break;
 953         }
 954
 955         case LFUN_SET_COLOR: {
 956                 string lyx_name;
 957                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 958                 if (lyx_name.empty() || x11_name.empty()) {
 959                         current_view_->message(
 960                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 961                         break;
 962                 }
 963
 964                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 965                 bool const graphicsbg_changed = lyx_name == graphicsbg
 966                         && x11_name != graphicsbg;
 967                 if (graphicsbg_changed) {
 968                         // FIXME: The graphics cache no longer has a changeDisplay method.
 969 #if 0
 970                         graphics::GCache::get().changeDisplay(true);
 971 #endif
 972                 }
 973
 974                 if (!lcolor.setColor(lyx_name, x11_name)) {
 975                         current_view_->message(
 976                                         bformat(_("Set-color \"%1$s\" failed "
 977                                                                "- color is undefined or "
 978                                                                "may not be redefined"),
 979                                                                    from_utf8(lyx_name)));
 980                         break;
 981                 }
 982                 // Make sure we don't keep old colors in cache.
 983                 d->color_cache_.clear();
 984                 break;
 985         }
 986
 987         default:
 988                 // Notify the caller that the action has not been dispatched.
 989                 return false;
 990         }
 991
 992         // The action has been dispatched.
 993         return true;
 994 }
 995
 996
 997 void GuiApplication::dispatchDelayed(FuncRequest const & func)
 998 {
 999         d->func_request_queue_.push(func);
1000         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
1001 }
1002
1003
1004 void GuiApplication::resetGui()
1005 {
1006         // Set the language defined by the user.
1007         setGuiLanguage();
1008
1009         // Read menus
1010         if (!readUIFile(toqstr(lyxrc.ui_file)))
1011                 // Gives some error box here.
1012                 return;
1013
1014         if (d->global_menubar_)
1015                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1016
1017         QHash<int, GuiView *>::iterator it;
1018         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1019                 GuiView * gv = *it;
1020                 gv->setLayoutDirection(layoutDirection());
1021                 gv->resetDialogs();
1022         }
1023
1024         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1025 }
1026
1027
1028 void GuiApplication::createView(int view_id)
1029 {
1030         createView(QString(), true, view_id);
1031 }
1032
1033
1034 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1035         int view_id)
1036 {
1037         // release the keyboard which might have been grabed by the global
1038         // menubar on Mac to catch shortcuts even without any GuiView.
1039         if (d->global_menubar_)
1040                 d->global_menubar_->releaseKeyboard();
1041
1042         // create new view
1043         int id = view_id;
1044         while (d->views_.find(id) != d->views_.end())
1045                 id++;
1046
1047         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1048         GuiView * view = new GuiView(id);
1049         // register view
1050         d->views_[id] = view;
1051
1052         if (autoShow) {
1053                 view->show();
1054                 setActiveWindow(view);
1055         }
1056
1057         if (!geometry_arg.isEmpty()) {
1058 #ifdef Q_WS_WIN
1059                 int x, y;
1060                 int w, h;
1061                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1062                 re.indexIn(geometry_arg);
1063                 w = re.cap(1).toInt();
1064                 h = re.cap(2).toInt();
1065                 x = re.cap(3).toInt();
1066                 y = re.cap(4).toInt();
1067                 view->setGeometry(x, y, w, h);
1068 #endif
1069         }
1070         view->setFocus();
1071 }
1072
1073
1074 Clipboard & GuiApplication::clipboard()
1075 {
1076         return d->clipboard_;
1077 }
1078
1079
1080 Selection & GuiApplication::selection()
1081 {
1082         return d->selection_;
1083 }
1084
1085
1086 FontLoader & GuiApplication::fontLoader()
1087 {
1088         return d->font_loader_;
1089 }
1090
1091
1092 Toolbars const & GuiApplication::toolbars() const
1093 {
1094         return d->toolbars_;
1095 }
1096
1097
1098 Toolbars & GuiApplication::toolbars()
1099 {
1100         return d->toolbars_;
1101 }
1102
1103
1104 Menus const & GuiApplication::menus() const
1105 {
1106         return d->menus_;
1107 }
1108
1109
1110 Menus & GuiApplication::menus()
1111 {
1112         return d->menus_;
1113 }
1114
1115
1116 QList<int> GuiApplication::viewIds() const
1117 {
1118         return d->views_.keys();
1119 }
1120
1121
1122 ColorCache & GuiApplication::colorCache()
1123 {
1124         return d->color_cache_;
1125 }
1126
1127
1128 int GuiApplication::exec()
1129 {
1130         // asynchronously handle batch commands. This event will be in
1131         // the event queue in front of other asynchronous events. Hence,
1132         // we can assume in the latter that the gui is setup already.
1133         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1134
1135         return QApplication::exec();
1136 }
1137
1138
1139 void GuiApplication::exit(int status)
1140 {
1141         QApplication::exit(status);
1142 }
1143
1144
1145 void GuiApplication::setGuiLanguage()
1146 {
1147         // Set the language defined by the user.
1148         setRcGuiLanguage();
1149
1150         QString const default_language = toqstr(Messages::defaultLanguage());
1151         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1152         QLocale const default_locale(default_language);
1153         QLocale::setDefault(default_locale);
1154
1155         // install translation file for Qt built-in dialogs
1156         QString const language_name = QString("qt_") + default_locale.name();
1157
1158         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1159         // Short-named translator can be loaded from a long name, but not the
1160         // opposite. Therefore, long name should be used without truncation.
1161         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1162         if (!d->qt_trans_.load(language_name,
1163                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1164                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1165                         << language_name);
1166         } else {
1167                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1168                         << language_name);
1169         }
1170
1171         switch (default_locale.language()) {
1172         case QLocale::Arabic :
1173         case QLocale::Hebrew :
1174         case QLocale::Persian :
1175         case QLocale::Urdu :
1176         setLayoutDirection(Qt::RightToLeft);
1177                 break;
1178         default:
1179         setLayoutDirection(Qt::LeftToRight);
1180         }
1181 }
1182
1183
1184 void GuiApplication::processFuncRequestQueue()
1185 {
1186         while (!d->func_request_queue_.empty()) {
1187                 lyx::dispatch(d->func_request_queue_.back());
1188                 d->func_request_queue_.pop();
1189         }
1190 }
1191
1192
1193 void GuiApplication::execBatchCommands()
1194 {
1195         setGuiLanguage();
1196
1197         // Read menus
1198         if (!readUIFile(toqstr(lyxrc.ui_file)))
1199                 // Gives some error box here.
1200                 return;
1201
1202 #ifdef Q_WS_MACX
1203         // Create the global default menubar which is shown for the dialogs
1204         // and if no GuiView is visible.
1205         // This must be done after the session was recovered to know the "last files".
1206         d->global_menubar_ = new GlobalMenuBar();
1207         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1208 #endif
1209
1210         lyx::execBatchCommands();
1211 }
1212
1213
1214 QAbstractItemModel * GuiApplication::languageModel()
1215 {
1216         if (d->language_model_)
1217                 return d->language_model_;
1218
1219         QStandardItemModel * lang_model = new QStandardItemModel(this);
1220         lang_model->insertColumns(0, 1);
1221         int current_row;
1222         Languages::const_iterator it = languages.begin();
1223         Languages::const_iterator end = languages.end();
1224         for (; it != end; ++it) {
1225                 current_row = lang_model->rowCount();
1226                 lang_model->insertRows(current_row, 1);
1227                 QModelIndex item = lang_model->index(current_row, 0);
1228                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1229                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1230         }
1231         d->language_model_ = new QSortFilterProxyModel(this);
1232         d->language_model_->setSourceModel(lang_model);
1233 #if QT_VERSION >= 0x040300
1234         d->language_model_->setSortLocaleAware(true);
1235 #endif
1236         return d->language_model_;
1237 }
1238
1239
1240 void GuiApplication::restoreGuiSession()
1241 {
1242         if (!lyxrc.load_session)
1243                 return;
1244
1245         Session & session = theSession();
1246         LastOpenedSection::LastOpened const & lastopened =
1247                 session.lastOpened().getfiles();
1248
1249         FileName active_file;
1250         // do not add to the lastfile list since these files are restored from
1251         // last session, and should be already there (regular files), or should
1252         // not be added at all (help files).
1253         for (size_t i = 0; i < lastopened.size(); ++i) {
1254                 FileName const & file_name = lastopened[i].file_name;
1255                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
1256                           && current_view_->documentBufferView() != 0)) {
1257                         boost::crc_32_type crc;
1258                         string const & fname = file_name.absFilename();
1259                         crc = for_each(fname.begin(), fname.end(), crc);
1260                         createView(crc.checksum());
1261                 }
1262                 current_view_->loadDocument(file_name, false);
1263
1264                 if (lastopened[i].active)
1265                         active_file = file_name;
1266         }
1267
1268         // Restore last active buffer
1269         Buffer * buffer = theBufferList().getBuffer(active_file);
1270         if (buffer)
1271                 current_view_->setBuffer(buffer);
1272
1273         // clear this list to save a few bytes of RAM
1274         session.lastOpened().clear();
1275 }
1276
1277
1278 QString const GuiApplication::romanFontName()
1279 {
1280         QFont font;
1281         font.setKerning(false);
1282         font.setStyleHint(QFont::Serif);
1283         font.setFamily("serif");
1284
1285         return QFontInfo(font).family();
1286 }
1287
1288
1289 QString const GuiApplication::sansFontName()
1290 {
1291         QFont font;
1292         font.setKerning(false);
1293         font.setStyleHint(QFont::SansSerif);
1294         font.setFamily("sans");
1295
1296         return QFontInfo(font).family();
1297 }
1298
1299
1300 QString const GuiApplication::typewriterFontName()
1301 {
1302         QFont font;
1303         font.setKerning(false);
1304         font.setStyleHint(QFont::TypeWriter);
1305         font.setFamily("monospace");
1306
1307         return QFontInfo(font).family();
1308 }
1309
1310
1311 void GuiApplication::handleRegularEvents()
1312 {
1313         ForkedCallsController::handleCompletedProcesses();
1314 }
1315
1316
1317 bool GuiApplication::event(QEvent * e)
1318 {
1319         switch(e->type()) {
1320         case QEvent::FileOpen: {
1321                 // Open a file; this happens only on Mac OS X for now.
1322                 //
1323                 // We do this asynchronously because on startup the batch
1324                 // commands are not executed here yet and the gui is not ready
1325                 // therefore.
1326                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1327                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
1328                 e->accept();
1329                 return true;
1330         }
1331         default:
1332                 return QApplication::event(e);
1333         }
1334 }
1335
1336
1337 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1338 {
1339         try {
1340                 return QApplication::notify(receiver, event);
1341         }
1342         catch (ExceptionMessage const & e) {
1343                 switch(e.type_) {
1344                 case ErrorException:
1345                         emergencyCleanup();
1346                         setQuitOnLastWindowClosed(false);
1347                         closeAllViews();
1348                         Alert::error(e.title_, e.details_);
1349 #ifndef NDEBUG
1350                         // Properly crash in debug mode in order to get a useful backtrace.
1351                         abort();
1352 #endif
1353                         // In release mode, try to exit gracefully.
1354                         this->exit(1);
1355
1356                 case BufferException: {
1357                         if (!current_view_->documentBufferView())
1358                                 return false;
1359                         Buffer * buf = &current_view_->documentBufferView()->buffer();
1360                         docstring details = e.details_ + '\n';
1361                         details += buf->emergencyWrite();
1362                         theBufferList().release(buf);
1363                         details += "\n" + _("The current document was closed.");
1364                         Alert::error(e.title_, details);
1365                         return false;
1366                 }
1367                 case WarningException:
1368                         Alert::warning(e.title_, e.details_);
1369                         return false;
1370                 }
1371         }
1372         catch (exception const & e) {
1373                 docstring s = _("LyX has caught an exception, it will now "
1374                         "attempt to save all unsaved documents and exit."
1375                         "\n\nException: ");
1376                 s += from_ascii(e.what());
1377                 Alert::error(_("Software exception Detected"), s);
1378                 lyx_exit(1);
1379         }
1380         catch (...) {
1381                 docstring s = _("LyX has caught some really weird exception, it will "
1382                         "now attempt to save all unsaved documents and exit.");
1383                 Alert::error(_("Software exception Detected"), s);
1384                 lyx_exit(1);
1385         }
1386
1387         return false;
1388 }
1389
1390
1391 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1392 {
1393         QColor const & qcol = d->color_cache_.get(col);
1394         if (!qcol.isValid()) {
1395                 rgbcol.r = 0;
1396                 rgbcol.g = 0;
1397                 rgbcol.b = 0;
1398                 return false;
1399         }
1400         rgbcol.r = qcol.red();
1401         rgbcol.g = qcol.green();
1402         rgbcol.b = qcol.blue();
1403         return true;
1404 }
1405
1406
1407 string const GuiApplication::hexName(ColorCode col)
1408 {
1409         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1410 }
1411
1412
1413 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1414 {
1415         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1416         d->socket_notifiers_[fd] = sn;
1417         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1418 }
1419
1420
1421 void GuiApplication::socketDataReceived(int fd)
1422 {
1423         d->socket_notifiers_[fd]->func_();
1424 }
1425
1426
1427 void GuiApplication::unregisterSocketCallback(int fd)
1428 {
1429         d->socket_notifiers_.take(fd)->setEnabled(false);
1430 }
1431
1432
1433 void GuiApplication::commitData(QSessionManager & sm)
1434 {
1435         /// The implementation is required to avoid an application exit
1436         /// when session state save is triggered by session manager.
1437         /// The default implementation sends a close event to all
1438         /// visible top level widgets when session managment allows
1439         /// interaction.
1440         /// We are changing that to close all wiew one by one.
1441         /// FIXME: verify if the default implementation is enough now.
1442         if (sm.allowsInteraction() && !closeAllViews())
1443                 sm.cancel();
1444 }
1445
1446
1447 void GuiApplication::unregisterView(GuiView * gv)
1448 {
1449         LASSERT(d->views_[gv->id()] == gv, /**/);
1450         d->views_.remove(gv->id());
1451         if (current_view_ == gv)
1452                 current_view_ = 0;
1453 }
1454
1455
1456 bool GuiApplication::closeAllViews()
1457 {
1458         if (d->views_.empty())
1459                 return true;
1460
1461         // When a view/window was closed before without quitting LyX, there
1462         // are already entries in the lastOpened list.
1463         theSession().lastOpened().clear();
1464
1465         QList<GuiView *> views = d->views_.values();
1466         foreach (GuiView * view, views) {
1467                 if (!view->close())
1468                         return false;
1469         }
1470
1471         d->views_.clear();
1472         return true;
1473 }
1474
1475
1476 GuiView & GuiApplication::view(int id) const
1477 {
1478         LASSERT(d->views_.contains(id), /**/);
1479         return *d->views_.value(id);
1480 }
1481
1482
1483 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1484 {
1485         QList<GuiView *> views = d->views_.values();
1486         foreach (GuiView * view, views)
1487                 view->hideDialog(name, inset);
1488 }
1489
1490
1491 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1492 {
1493         Buffer const * buffer_ = 0;
1494         QHash<int, GuiView *>::iterator end = d->views_.end();
1495         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1496                 if (Buffer const * ptr = (*it)->updateInset(inset))
1497                         buffer_ = ptr;
1498         }
1499         return buffer_;
1500 }
1501
1502
1503 bool GuiApplication::searchMenu(FuncRequest const & func,
1504         docstring_list & names) const
1505 {
1506         return d->menus_.searchMenu(func, names);
1507 }
1508
1509
1510 bool GuiApplication::readUIFile(QString const & name, bool include)
1511 {
1512         LYXERR(Debug::INIT, "About to read " << name << "...");
1513
1514         FileName ui_path;
1515         if (include) {
1516                 ui_path = libFileSearch("ui", name, "inc");
1517                 if (ui_path.empty())
1518                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1519         } else {
1520                 ui_path = libFileSearch("ui", name, "ui");
1521         }
1522
1523         if (ui_path.empty()) {
1524                 static const QString defaultUIFile = "default";
1525                 LYXERR(Debug::INIT, "Could not find " << name);
1526                 if (include) {
1527                         Alert::warning(_("Could not find UI definition file"),
1528                                 bformat(_("Error while reading the included file\n%1$s\n"
1529                                         "Please check your installation."), qstring_to_ucs4(name)));
1530                         return false;
1531                 }
1532                 if (name == defaultUIFile) {
1533                         LYXERR(Debug::INIT, "Could not find default UI file!!");
1534                         Alert::warning(_("Could not find default UI file"),
1535                                 _("LyX could not find the default UI file!\n"
1536                                   "Please check your installation."));
1537                         return false;
1538                 }
1539                 Alert::warning(_("Could not find UI definition file"),
1540                 bformat(_("Error while reading the configuration file\n%1$s\n"
1541                         "Falling back to default.\n"
1542                         "Please look under Tools>Preferences>User Interface and\n"
1543                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
1544                 return readUIFile(defaultUIFile, false);
1545         }
1546
1547         // Ensure that a file is read only once (prevents include loops)
1548         static QStringList uifiles;
1549         QString const uifile = toqstr(ui_path.absFilename());
1550         if (uifiles.contains(uifile)) {
1551                 if (!include) {
1552                         // We are reading again the top uifile so reset the safeguard:
1553                         uifiles.clear();
1554                         d->menus_.reset();
1555                         d->toolbars_.reset();
1556                 } else {
1557                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1558                                 << "Is this an include loop?");
1559                         return false;
1560                 }
1561         }
1562         uifiles.push_back(uifile);
1563
1564         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1565
1566         enum {
1567                 ui_menuset = 1,
1568                 ui_toolbars,
1569                 ui_toolbarset,
1570                 ui_include,
1571                 ui_last
1572         };
1573
1574         LexerKeyword uitags[] = {
1575                 { "include", ui_include },
1576                 { "menuset", ui_menuset },
1577                 { "toolbars", ui_toolbars },
1578                 { "toolbarset", ui_toolbarset }
1579         };
1580
1581         Lexer lex(uitags);
1582         lex.setFile(ui_path);
1583         if (!lex.isOK()) {
1584                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1585                        << endl;
1586         }
1587
1588         if (lyxerr.debugging(Debug::PARSER))
1589                 lex.printTable(lyxerr);
1590
1591         // store which ui files define Toolbars
1592         static QStringList toolbar_uifiles;
1593
1594         while (lex.isOK()) {
1595                 switch (lex.lex()) {
1596                 case ui_include: {
1597                         lex.next(true);
1598                         QString const file = toqstr(lex.getString());
1599                         if (!readUIFile(file, true))
1600                                 return false;
1601                         break;
1602                 }
1603                 case ui_menuset:
1604                         d->menus_.read(lex);
1605                         break;
1606
1607                 case ui_toolbarset:
1608                         d->toolbars_.readToolbars(lex);
1609                         break;
1610
1611                 case ui_toolbars:
1612                         d->toolbars_.readToolbarSettings(lex);
1613                         toolbar_uifiles.push_back(uifile);
1614                         break;
1615
1616                 default:
1617                         if (!rtrim(lex.getString()).empty())
1618                                 lex.printError("LyX::ReadUIFile: "
1619                                                "Unknown menu tag: `$$Token'");
1620                         break;
1621                 }
1622         }
1623
1624         if (include)
1625                 return true;
1626
1627         QSettings settings;
1628         settings.beginGroup("ui_files");
1629         bool touched = false;
1630         for (int i = 0; i != uifiles.size(); ++i) {
1631                 QFileInfo fi(uifiles[i]);
1632                 QDateTime const date_value = fi.lastModified();
1633                 QString const name_key = QString::number(i);
1634                 // if an ui file which defines Toolbars has changed,
1635                 // we have to reset the settings
1636                 if (toolbar_uifiles.contains(uifiles[i])
1637                  && (!settings.contains(name_key)
1638                  || settings.value(name_key).toString() != uifiles[i]
1639                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
1640                         touched = true;
1641                         settings.setValue(name_key, uifiles[i]);
1642                         settings.setValue(name_key + "/date", date_value);
1643                 }
1644         }
1645         settings.endGroup();
1646         if (touched)
1647                 settings.remove("views");
1648
1649         return true;
1650 }
1651
1652
1653 void GuiApplication::onLastWindowClosed()
1654 {
1655         if (d->global_menubar_)
1656                 d->global_menubar_->grabKeyboard();
1657 }
1658
1659
1660 ////////////////////////////////////////////////////////////////////////
1661 //
1662 // X11 specific stuff goes here...
1663
1664 #ifdef Q_WS_X11
1665 bool GuiApplication::x11EventFilter(XEvent * xev)
1666 {
1667         if (!current_view_)
1668                 return false;
1669
1670         switch (xev->type) {
1671         case SelectionRequest: {
1672                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1673                         break;
1674                 LYXERR(Debug::SELECTION, "X requested selection.");
1675                 BufferView * bv = current_view_->currentBufferView();
1676                 if (bv) {
1677                         docstring const sel = bv->requestSelection();
1678                         if (!sel.empty())
1679                                 d->selection_.put(sel);
1680                 }
1681                 break;
1682         }
1683         case SelectionClear: {
1684                 if (xev->xselectionclear.selection != XA_PRIMARY)
1685                         break;
1686                 LYXERR(Debug::SELECTION, "Lost selection.");
1687                 BufferView * bv = current_view_->currentBufferView();
1688                 if (bv)
1689                         bv->clearSelection();
1690                 break;
1691         }
1692         }
1693         return false;
1694 }
1695 #endif
1696
1697 } // namespace frontend
1698
1699
1700 void hideDialogs(std::string const & name, Inset * inset)
1701 {
1702         if (theApp())
1703                 theApp()->hideDialogs(name, inset);
1704 }
1705
1706
1707 ////////////////////////////////////////////////////////////////////
1708 //
1709 // Font stuff
1710 //
1711 ////////////////////////////////////////////////////////////////////
1712
1713 frontend::FontLoader & theFontLoader()
1714 {
1715         LASSERT(frontend::guiApp, /**/);
1716         return frontend::guiApp->fontLoader();
1717 }
1718
1719
1720 frontend::FontMetrics const & theFontMetrics(Font const & f)
1721 {
1722         return theFontMetrics(f.fontInfo());
1723 }
1724
1725
1726 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1727 {
1728         LASSERT(frontend::guiApp, /**/);
1729         return frontend::guiApp->fontLoader().metrics(f);
1730 }
1731
1732
1733 ////////////////////////////////////////////////////////////////////
1734 //
1735 // Misc stuff
1736 //
1737 ////////////////////////////////////////////////////////////////////
1738
1739 frontend::Clipboard & theClipboard()
1740 {
1741         LASSERT(frontend::guiApp, /**/);
1742         return frontend::guiApp->clipboard();
1743 }
1744
1745
1746 frontend::Selection & theSelection()
1747 {
1748         LASSERT(frontend::guiApp, /**/);
1749         return frontend::guiApp->selection();
1750 }
1751
1752
1753 } // namespace lyx
1754
1755 #include "moc_GuiApplication.cpp"