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