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 "ToolbarBackend.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 "LyXFunc.h"
  43 #include "LyXRC.h"
  44 #include "Session.h"
  45 #include "version.h"
  46
  47 #include "support/lassert.h"
  48 #include "support/debug.h"
  49 #include "support/ExceptionMessage.h"
  50 #include "support/FileName.h"
  51 #include "support/foreach.h"
  52 #include "support/ForkedCalls.h"
  53 #include "support/gettext.h"
  54 #include "support/lstrings.h"
  55 #include "support/os.h"
  56 #include "support/Package.h"
  57
  58 #ifdef Q_WS_MACX
  59 #include "support/linkback/LinkBackProxy.h"
  60 #endif
  61
  62 #include <QClipboard>
  63 #include <QEventLoop>
  64 #include <QFileOpenEvent>
  65 #include <QHash>
  66 #include <QLocale>
  67 #include <QLibraryInfo>
  68 #include <QMacPasteboardMime>
  69 #include <QMenuBar>
  70 #include <QMimeData>
  71 #include <QPixmapCache>
  72 #include <QRegExp>
  73 #include <QSessionManager>
  74 #include <QSocketNotifier>
  75 #include <QSortFilterProxyModel>
  76 #include <QStandardItemModel>
  77 #include <QTextCodec>
  78 #include <QTimer>
  79 #include <QTranslator>
  80 #include <QWidget>
  81
  82 #ifdef Q_WS_X11
  83 #include <X11/Xatom.h>
  84 #include <X11/Xlib.h>
  85 #undef CursorShape
  86 #undef None
  87 #endif
  88
  89 #ifdef Q_WS_WIN
  90 #include <QList>
  91 #include <QWindowsMime>
  92 #if defined(Q_CYGWIN_WIN) || defined(Q_CC_MINGW)
  93 #include <wtypes.h>
  94 #endif
  95 #include <objidl.h>
  96 #endif // Q_WS_WIN
  97
  98 #include <boost/bind.hpp>
  99
 100 #include <exception>
 101
 102 using namespace std;
 103 using namespace lyx::support;
 104
 105 // FIXME: These strings are also used in GuiClipboard.cpp.
 106 static char const * const lyx_mime_type = "application/x-lyx";
 107 static char const * const pdf_mime_type = "application/pdf";
 108 static char const * const emf_mime_type = "image/x-emf";
 109 static char const * const wmf_mime_type = "image/x-wmf";
 110
 111 namespace lyx {
 112
 113 frontend::Application * createApplication(int & argc, char * argv[])
 114 {
 115         return new frontend::GuiApplication(argc, argv);
 116 }
 117
 118
 119 namespace frontend {
 120
 121 class SocketNotifier : public QSocketNotifier
 122 {
 123 public:
 124         /// connect a connection notification from the LyXServerSocket
 125         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 126                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 127         {}
 128
 129 public:
 130         /// The callback function
 131         Application::SocketCallback func_;
 132 };
 133
 134
 135 ////////////////////////////////////////////////////////////////////////
 136 // Mac specific stuff goes here...
 137
 138 class MenuTranslator : public QTranslator
 139 {
 140 public:
 141         MenuTranslator(QObject * parent)
 142                 : QTranslator(parent)
 143         {}
 144
 145         QString translate(const char * /*context*/,
 146           const char * sourceText,
 147           const char * /*comment*/ = 0)
 148         {
 149                 string const s = sourceText;
 150                 if (s == N_("About %1") || s == N_("Preferences")
 151                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 152                         return qt_(s);
 153                 else
 154                         return QString();
 155         }
 156 };
 157
 158 class GlobalMenuBar : public QMenuBar
 159 {
 160 public:
 161         ///
 162         GlobalMenuBar() : QMenuBar(0) {}
 163
 164         ///
 165         bool event(QEvent * e)
 166         {
 167                 if (e->type() == QEvent::ShortcutOverride) {
 168                         //          && activeWindow() == 0) {
 169                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 170                         KeySymbol sym;
 171                         setKeySymbol(&sym, ke);
 172                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 173                         e->accept();
 174                         return true;
 175                 }
 176                 return false;
 177         }
 178 };
 179
 180 #ifdef Q_WS_MACX
 181 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 182
 183 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 184 {
 185 public:
 186         QMacPasteboardMimeGraphics()
 187                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 188         {}
 189
 190         QString convertorName() { return "Graphics"; }
 191
 192         QString flavorFor(QString const & mime)
 193         {
 194                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 195                 if (mime == QLatin1String(pdf_mime_type))
 196                         return QLatin1String("com.adobe.pdf");
 197                 return QString();
 198         }
 199
 200         QString mimeFor(QString flav)
 201         {
 202                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 203                 if (flav == QLatin1String("com.adobe.pdf"))
 204                         return QLatin1String(pdf_mime_type);
 205                 return QString();
 206         }
 207
 208         bool canConvert(QString const & mime, QString flav)
 209         { return mimeFor(flav) == mime; }
 210
 211         QVariant convertToMime(QString const & mime, QList<QByteArray> data, QString flav)
 212         {
 213                 if(data.count() > 1)
 214                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 215                 return data.first();
 216         }
 217
 218         QList<QByteArray> convertFromMime(QString const & mime, QVariant data, QString flav)
 219         {
 220                 QList<QByteArray> ret;
 221                 ret.append(data.toByteArray());
 222                 return ret;
 223         }
 224 };
 225 #endif
 226
 227 ///////////////////////////////////////////////////////////////
 228 // You can find more platform specific stuff
 229 // at the end of this file...
 230 ///////////////////////////////////////////////////////////////
 231
 232 ////////////////////////////////////////////////////////////////////////
 233 // Windows specific stuff goes here...
 234
 235 #ifdef Q_WS_WIN
 236 // QWindowsMimeMetafile can only be compiled on Windows.
 237
 238 static FORMATETC cfFromMime(QString const & mimetype)
 239 {
 240         FORMATETC formatetc;
 241         if (mimetype == emf_mime_type) {
 242                 formatetc.cfFormat = CF_ENHMETAFILE;
 243                 formatetc.tymed = TYMED_ENHMF;
 244         } else if (mimetype == wmf_mime_type) {
 245                 formatetc.cfFormat = CF_METAFILEPICT;
 246                 formatetc.tymed = TYMED_MFPICT;
 247         }
 248         formatetc.ptd = 0;
 249         formatetc.dwAspect = DVASPECT_CONTENT;
 250         formatetc.lindex = -1;
 251         return formatetc;
 252 }
 253
 254
 255 class QWindowsMimeMetafile : public QWindowsMime {
 256 public:
 257         QWindowsMimeMetafile() {}
 258
 259         bool canConvertFromMime(FORMATETC const & formatetc,
 260                 QMimeData const * mimedata) const
 261         {
 262                 return false;
 263         }
 264
 265         bool canConvertToMime(QString const & mimetype,
 266                 IDataObject * pDataObj) const
 267         {
 268                 if (mimetype != emf_mime_type && mimetype != wmf_mime_type)
 269                         return false;
 270                 FORMATETC formatetc = cfFromMime(mimetype);
 271                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 272         }
 273
 274         bool convertFromMime(FORMATETC const & formatetc,
 275                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 276         {
 277                 return false;
 278         }
 279
 280         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 281                 QVariant::Type preferredType) const
 282         {
 283                 QByteArray data;
 284                 if (!canConvertToMime(mimetype, pDataObj))
 285                         return data;
 286
 287                 FORMATETC formatetc = cfFromMime(mimetype);
 288                 STGMEDIUM s;
 289                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 290                         return data;
 291
 292                 int dataSize;
 293                 if (s.tymed == TYMED_ENHMF) {
 294                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 295                         data.resize(dataSize);
 296                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 297                                 (LPBYTE)data.data());
 298                 } else if (s.tymed == TYMED_MFPICT) {
 299                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 300                         data.resize(dataSize);
 301                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 302                                 (LPBYTE)data.data());
 303                 }
 304                 data.detach();
 305                 ReleaseStgMedium(&s);
 306
 307                 return data;
 308         }
 309
 310
 311         QVector<FORMATETC> formatsForMime(QString const & mimeType,
 312                 QMimeData const * mimeData) const
 313         {
 314                 QVector<FORMATETC> formats;
 315                 formats += cfFromMime(mimeType);
 316                 return formats;
 317         }
 318
 319         QString mimeForFormat(FORMATETC const & formatetc) const
 320         {
 321                 switch (formatetc.cfFormat) {
 322                 case CF_ENHMETAFILE:
 323                         return emf_mime_type;
 324                 case CF_METAFILEPICT:
 325                         return wmf_mime_type;
 326                 }
 327                 return QString();
 328         }
 329 };
 330
 331 #endif // Q_WS_WIN
 332
 333 ////////////////////////////////////////////////////////////////////////
 334 // GuiApplication::Private definition and implementation.
 335 ////////////////////////////////////////////////////////////////////////
 336
 337 struct GuiApplication::Private
 338 {
 339         Private()
 340                 : language_model_(0), global_menubar_(0)
 341         {
 342 #ifdef Q_WS_MACX
 343                 // Create the global default menubar which is shown for the dialogs
 344                 // and if no GuiView is visible.
 345                 global_menubar_ = new GlobalMenuBar();
 346 #endif
 347         }
 348
 349         ///
 350         QSortFilterProxyModel * language_model_;
 351         ///
 352         GuiClipboard clipboard_;
 353         ///
 354         GuiSelection selection_;
 355         ///
 356         FontLoader font_loader_;
 357         ///
 358         ColorCache color_cache_;
 359         ///
 360         QTranslator qt_trans_;
 361         ///
 362         QHash<int, SocketNotifier *> socket_notifiers_;
 363         ///
 364         Menus menus_;
 365         /// this timer is used for any regular events one wants to
 366         /// perform. at present it is used to check if forked processes
 367         /// are done.
 368         QTimer general_timer_;
 369
 370         /// Multiple views container.
 371         /**
 372         * Warning: This must not be a smart pointer as the destruction of the
 373         * object is handled by Qt when the view is closed
 374         * \sa Qt::WA_DeleteOnClose attribute.
 375         */
 376         QHash<int, GuiView *> views_;
 377
 378         /// Only used on mac.
 379         GlobalMenuBar * global_menubar_;
 380
 381 #ifdef Q_WS_MACX
 382         /// Linkback mime handler for MacOSX.
 383         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 384 #endif
 385
 386 #ifdef Q_WS_WIN
 387         /// WMF Mime handler for Windows clipboard.
 388         // FIXME for Windows Vista and Qt4 (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 389         // But this makes LyX crash on exit when LyX is compiled in release mode and if there
 390         // is something in the clipboard.
 391         QWindowsMimeMetafile wmf_mime_;
 392 #endif
 393 };
 394
 395
 396 GuiApplication * guiApp;
 397
 398 GuiApplication::~GuiApplication()
 399 {
 400 #ifdef Q_WS_MACX
 401         closeAllLinkBackLinks();
 402 #endif
 403         delete d;
 404 }
 405
 406
 407 GuiApplication::GuiApplication(int & argc, char ** argv)
 408         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 409 {
 410         QString app_name = "LyX";
 411         QCoreApplication::setOrganizationName(app_name);
 412         QCoreApplication::setOrganizationDomain("lyx.org");
 413         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 414
 415         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 416         // lyxrc setting for this in order to let the application stay resident.
 417         // But then we need some kind of dock icon, at least on Windows.
 418         /*
 419         if (lyxrc.quit_on_last_window_closed)
 420                 setQuitOnLastWindowClosed(false);
 421         */
 422 #ifdef Q_WS_MACX
 423         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 424         // seems to be the default case for applications like LyX.
 425         setQuitOnLastWindowClosed(false);
 426 #endif
 427
 428 #ifdef Q_WS_X11
 429         // doubleClickInterval() is 400 ms on X11 which is just too long.
 430         // On Windows and Mac OS X, the operating system's value is used.
 431         // On Microsoft Windows, calling this function sets the double
 432         // click interval for all applications. So we don't!
 433         QApplication::setDoubleClickInterval(300);
 434 #endif
 435
 436         // install translation file for Qt built-in dialogs
 437         QString language_name = QString("qt_") + QLocale::system().name();
 438
 439         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 440         // Short-named translator can be loaded from a long name, but not the
 441         // opposite. Therefore, long name should be used without truncation.
 442         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 443         if (d->qt_trans_.load(language_name,
 444                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 445         {
 446                 installTranslator(&d->qt_trans_);
 447                 // even if the language calls for RtL, don't do that
 448                 setLayoutDirection(Qt::LeftToRight);
 449                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 450                         << language_name);
 451         } else
 452                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 453                         << language_name);
 454
 455 #ifdef Q_WS_MACX
 456         // This allows to translate the strings that appear in the LyX menu.
 457         /// A translator suitable for the entries in the LyX menu.
 458         /// Only needed with Qt/Mac.
 459         installTranslator(new MenuTranslator(this));
 460 #endif
 461         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 462
 463         using namespace lyx::graphics;
 464
 465         Image::newImage = boost::bind(&GuiImage::newImage);
 466         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 467
 468         // needs to be done before reading lyxrc
 469         QWidget w;
 470         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 471
 472         guiApp = this;
 473
 474         // Set the cache to 5120 kilobytes which corresponds to screen size of
 475         // 1280 by 1024 pixels with a color depth of 32 bits.
 476         QPixmapCache::setCacheLimit(5120);
 477
 478         // Initialize RC Fonts
 479         if (lyxrc.roman_font_name.empty())
 480                 lyxrc.roman_font_name = fromqstr(romanFontName());
 481
 482         if (lyxrc.sans_font_name.empty())
 483                 lyxrc.sans_font_name = fromqstr(sansFontName());
 484
 485         if (lyxrc.typewriter_font_name.empty())
 486                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 487
 488         d->general_timer_.setInterval(500);
 489         connect(&d->general_timer_, SIGNAL(timeout()),
 490                 this, SLOT(handleRegularEvents()));
 491         d->general_timer_.start();
 492 }
 493
 494
 495 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 496 {
 497         bool enable = true;
 498
 499         switch(cmd.action) {
 500
 501         case LFUN_WINDOW_CLOSE:
 502                 enable = d->views_.size() > 0;
 503                 break;
 504
 505         case LFUN_BUFFER_NEW:
 506         case LFUN_BUFFER_NEW_TEMPLATE:
 507         case LFUN_FILE_OPEN:
 508         case LFUN_SCREEN_FONT_UPDATE:
 509         case LFUN_SET_COLOR:
 510         case LFUN_WINDOW_NEW:
 511         case LFUN_LYX_QUIT:
 512                 enable = true;
 513                 break;
 514
 515         default:
 516                 return false;
 517         }
 518
 519         if (!enable)
 520                 flag.enabled(false);
 521
 522         return true;
 523 }
 524
 525
 526 bool GuiApplication::dispatch(FuncRequest const & cmd)
 527 {
 528         switch (cmd.action) {
 529
 530         case LFUN_WINDOW_NEW:
 531                 createView(toqstr(cmd.argument()));
 532                 break;
 533
 534         case LFUN_WINDOW_CLOSE:
 535                 // update bookmark pit of the current buffer before window close
 536                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 537                         theLyXFunc().gotoBookmark(i+1, false, false);
 538                 current_view_->close();
 539                 break;
 540
 541         case LFUN_LYX_QUIT:
 542                 // quitting is triggered by the gui code
 543                 // (leaving the event loop).
 544                 if (current_view_)
 545                         current_view_->message(from_utf8(N_("Exiting.")));
 546                 if (closeAllViews())
 547                         quit();
 548                 break;
 549
 550         case LFUN_SCREEN_FONT_UPDATE: {
 551                 // handle the screen font changes.
 552                 d->font_loader_.update();
 553                 // Backup current_view_
 554                 GuiView * view = current_view_;
 555                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 556                 // to skip the refresh.
 557                 current_view_ = 0;
 558                 BufferList::iterator it = theBufferList().begin();
 559                 BufferList::iterator const end = theBufferList().end();
 560                 for (; it != end; ++it)
 561                         (*it)->changed();
 562                 // Restore current_view_
 563                 current_view_ = view;
 564                 break;
 565         }
 566
 567         case LFUN_BUFFER_NEW:
 568                 if (d->views_.empty()
 569                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 570                         createView(QString(), false); // keep hidden
 571                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 572                         current_view_->show();
 573                         setActiveWindow(current_view_);
 574                 } else {
 575                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 576                 }
 577                 break;
 578
 579         case LFUN_BUFFER_NEW_TEMPLATE:
 580                 if (d->views_.empty()
 581                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 582                         createView();
 583                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 584                         if (!current_view_->buffer())
 585                                 current_view_->close();
 586                 } else {
 587                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 588                 }
 589                 break;
 590
 591         case LFUN_FILE_OPEN:
 592                 if (d->views_.empty()
 593                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 594                         createView();
 595                         current_view_->openDocument(to_utf8(cmd.argument()));
 596                         if (!current_view_->buffer())
 597                                 current_view_->close();
 598                 } else
 599                         current_view_->openDocument(to_utf8(cmd.argument()));
 600                 break;
 601
 602         case LFUN_SET_COLOR: {
 603                 string lyx_name;
 604                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 605                 if (lyx_name.empty() || x11_name.empty()) {
 606                         current_view_->message(
 607                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 608                         break;
 609                 }
 610
 611                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 612                 bool const graphicsbg_changed = lyx_name == graphicsbg
 613                         && x11_name != graphicsbg;
 614                 if (graphicsbg_changed) {
 615                         // FIXME: The graphics cache no longer has a changeDisplay method.
 616 #if 0
 617                         graphics::GCache::get().changeDisplay(true);
 618 #endif
 619                 }
 620
 621                 if (!lcolor.setColor(lyx_name, x11_name)) {
 622                         current_view_->message(
 623                                         bformat(_("Set-color \"%1$s\" failed "
 624                                                                "- color is undefined or "
 625                                                                "may not be redefined"),
 626                                                                    from_utf8(lyx_name)));
 627                         break;
 628                 }
 629                 // Make sure we don't keep old colors in cache.
 630                 d->color_cache_.clear();
 631                 break;
 632         }
 633
 634         default:
 635                 // Notify the caller that the action has not been dispatched.
 636                 return false;
 637         }
 638
 639         // The action has been dispatched.
 640         return true;
 641 }
 642
 643
 644 void GuiApplication::resetGui()
 645 {
 646         QHash<int, GuiView *>::iterator it;
 647         for (it = d->views_.begin(); it != d->views_.end(); ++it)
 648                 (*it)->resetDialogs();
 649
 650         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 651 }
 652
 653
 654 void GuiApplication::createView(QString const & geometry_arg, bool autoShow)
 655 {
 656         // release the keyboard which might have been grabed by the global
 657         // menubar on Mac to catch shortcuts even without any GuiView.
 658         if (d->global_menubar_)
 659                 d->global_menubar_->releaseKeyboard();
 660
 661         // create new view
 662         int id = 0;
 663         while (d->views_.find(id) != d->views_.end())
 664                 id++;
 665         GuiView * view = new GuiView(id);
 666
 667         // copy the icon size from old view
 668         if (current_view_)
 669                 view->setIconSize(current_view_->iconSize());
 670
 671         // register view
 672         d->views_[id] = view;
 673
 674         if (autoShow) {
 675                 view->show();
 676                 setActiveWindow(view);
 677         }
 678
 679         if (!geometry_arg.isEmpty()) {
 680 #ifdef Q_WS_WIN
 681                 int x, y;
 682                 int w, h;
 683                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 684                 re.indexIn(geometry_arg);
 685                 w = re.cap(1).toInt();
 686                 h = re.cap(2).toInt();
 687                 x = re.cap(3).toInt();
 688                 y = re.cap(4).toInt();
 689                 view->setGeometry(x, y, w, h);
 690 #endif
 691         }
 692         view->setFocus();
 693         setCurrentView(view);
 694 }
 695
 696
 697 Clipboard & GuiApplication::clipboard()
 698 {
 699         return d->clipboard_;
 700 }
 701
 702
 703 Selection & GuiApplication::selection()
 704 {
 705         return d->selection_;
 706 }
 707
 708
 709 FontLoader & GuiApplication::fontLoader()
 710 {
 711         return d->font_loader_;
 712 }
 713
 714
 715 Menus const & GuiApplication::menus() const
 716 {
 717         return d->menus_;
 718 }
 719
 720
 721 Menus & GuiApplication::menus()
 722 {
 723         return d->menus_;
 724 }
 725
 726
 727 QList<int> GuiApplication::viewIds() const
 728 {
 729         return d->views_.keys();
 730 }
 731
 732
 733 ColorCache & GuiApplication::colorCache()
 734 {
 735         return d->color_cache_;
 736 }
 737
 738
 739 int GuiApplication::exec()
 740 {
 741         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 742         return QApplication::exec();
 743 }
 744
 745
 746 void GuiApplication::exit(int status)
 747 {
 748         QApplication::exit(status);
 749 }
 750
 751
 752 void GuiApplication::execBatchCommands()
 753 {
 754         // Read menus
 755         if (!readUIFile(lyxrc.ui_file))
 756                 // Gives some error box here.
 757                 return;
 758
 759         // init the global menubar on Mac. This must be done after the session
 760         // was recovered to know the "last files".
 761         if (d->global_menubar_)
 762                 d->menus_.fillMenuBar(d->global_menubar_, 0, true);
 763
 764         LyX::ref().execBatchCommands();
 765 }
 766
 767 QAbstractItemModel * GuiApplication::languageModel()
 768 {
 769         if (d->language_model_)
 770                 return d->language_model_;
 771
 772         QStandardItemModel * lang_model = new QStandardItemModel(this);
 773         lang_model->insertColumns(0, 1);
 774         int current_row;
 775         Languages::const_iterator it = languages.begin();
 776         Languages::const_iterator end = languages.end();
 777         for (; it != end; ++it) {
 778                 current_row = lang_model->rowCount();
 779                 lang_model->insertRows(current_row, 1);
 780                 QModelIndex item = lang_model->index(current_row, 0);
 781                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
 782                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
 783         }
 784         d->language_model_ = new QSortFilterProxyModel(this);
 785         d->language_model_->setSourceModel(lang_model);
 786 #if QT_VERSION >= 0x040300
 787         d->language_model_->setSortLocaleAware(true);
 788 #endif
 789         return d->language_model_;
 790 }
 791
 792
 793 void GuiApplication::restoreGuiSession()
 794 {
 795         if (!lyxrc.load_session)
 796                 return;
 797
 798         Session & session = LyX::ref().session();
 799         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 800         // do not add to the lastfile list since these files are restored from
 801         // last session, and should be already there (regular files), or should
 802         // not be added at all (help files).
 803         for_each(lastopened.begin(), lastopened.end(),
 804                 bind(&GuiView::loadDocument, current_view_, _1, false));
 805
 806         // clear this list to save a few bytes of RAM
 807         session.lastOpened().clear();
 808 }
 809
 810
 811 QString const GuiApplication::romanFontName()
 812 {
 813         QFont font;
 814         font.setKerning(false);
 815         font.setStyleHint(QFont::Serif);
 816         font.setFamily("serif");
 817
 818         return QFontInfo(font).family();
 819 }
 820
 821
 822 QString const GuiApplication::sansFontName()
 823 {
 824         QFont font;
 825         font.setKerning(false);
 826         font.setStyleHint(QFont::SansSerif);
 827         font.setFamily("sans");
 828
 829         return QFontInfo(font).family();
 830 }
 831
 832
 833 QString const GuiApplication::typewriterFontName()
 834 {
 835         QFont font;
 836         font.setKerning(false);
 837         font.setStyleHint(QFont::TypeWriter);
 838         font.setFamily("monospace");
 839
 840         return QFontInfo(font).family();
 841 }
 842
 843
 844 void GuiApplication::handleRegularEvents()
 845 {
 846         ForkedCallsController::handleCompletedProcesses();
 847 }
 848
 849
 850 bool GuiApplication::event(QEvent * e)
 851 {
 852         switch(e->type()) {
 853         case QEvent::FileOpen: {
 854                 // Open a file; this happens only on Mac OS X for now
 855                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 856
 857                 if (!current_view_ || !current_view_->view())
 858                         // The application is not properly initialized yet.
 859                         // So we acknowledge the event and delay the file opening
 860                         // until LyX is ready.
 861                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 862                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 863                 else
 864                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 865                                 qstring_to_ucs4(foe->file())));
 866
 867                 e->accept();
 868                 return true;
 869         }
 870         default:
 871                 return QApplication::event(e);
 872         }
 873 }
 874
 875
 876 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 877 {
 878         try {
 879                 return QApplication::notify(receiver, event);
 880         }
 881         catch (ExceptionMessage const & e) {
 882                 switch(e.type_) {
 883                 case ErrorException:
 884                         LyX::cref().emergencyCleanup();
 885                         setQuitOnLastWindowClosed(false);
 886                         closeAllViews();
 887                         Alert::error(e.title_, e.details_);
 888 #ifndef NDEBUG
 889                         // Properly crash in debug mode in order to get a useful backtrace.
 890                         abort();
 891 #endif
 892                         // In release mode, try to exit gracefully.
 893                         this->exit(1);
 894
 895                 case BufferException: {
 896                         Buffer * buf = current_view_->buffer();
 897                         docstring details = e.details_ + '\n';
 898                         details += theBufferList().emergencyWrite(buf);
 899                         theBufferList().release(buf);
 900                         details += "\n" + _("The current document was closed.");
 901                         Alert::error(e.title_, details);
 902                         return false;
 903                 }
 904                 case WarningException:
 905                         Alert::warning(e.title_, e.details_);
 906                         return false;
 907                 }
 908         }
 909         catch (exception const & e) {
 910                 docstring s = _("LyX has caught an exception, it will now "
 911                         "attempt to save all unsaved documents and exit."
 912                         "\n\nException: ");
 913                 s += from_ascii(e.what());
 914                 Alert::error(_("Software exception Detected"), s);
 915                 LyX::cref().exit(1);
 916         }
 917         catch (...) {
 918                 docstring s = _("LyX has caught some really weird exception, it will "
 919                         "now attempt to save all unsaved documents and exit.");
 920                 Alert::error(_("Software exception Detected"), s);
 921                 LyX::cref().exit(1);
 922         }
 923
 924         return false;
 925 }
 926
 927
 928 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 929 {
 930         QColor const & qcol = d->color_cache_.get(col);
 931         if (!qcol.isValid()) {
 932                 rgbcol.r = 0;
 933                 rgbcol.g = 0;
 934                 rgbcol.b = 0;
 935                 return false;
 936         }
 937         rgbcol.r = qcol.red();
 938         rgbcol.g = qcol.green();
 939         rgbcol.b = qcol.blue();
 940         return true;
 941 }
 942
 943
 944 string const GuiApplication::hexName(ColorCode col)
 945 {
 946         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
 947 }
 948
 949
 950 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 951 {
 952         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 953         d->socket_notifiers_[fd] = sn;
 954         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 955 }
 956
 957
 958 void GuiApplication::socketDataReceived(int fd)
 959 {
 960         d->socket_notifiers_[fd]->func_();
 961 }
 962
 963
 964 void GuiApplication::unregisterSocketCallback(int fd)
 965 {
 966         d->socket_notifiers_.take(fd)->setEnabled(false);
 967 }
 968
 969
 970 void GuiApplication::commitData(QSessionManager & sm)
 971 {
 972         /// The implementation is required to avoid an application exit
 973         /// when session state save is triggered by session manager.
 974         /// The default implementation sends a close event to all
 975         /// visible top level widgets when session managment allows
 976         /// interaction.
 977         /// We are changing that to close all wiew one by one.
 978         /// FIXME: verify if the default implementation is enough now.
 979         if (sm.allowsInteraction() && !closeAllViews())
 980                 sm.cancel();
 981 }
 982
 983
 984 void GuiApplication::unregisterView(GuiView * gv)
 985 {
 986         LASSERT(d->views_[gv->id()] == gv, /**/);
 987         d->views_.remove(gv->id());
 988         if (current_view_ == gv) {
 989                 current_view_ = 0;
 990                 theLyXFunc().setLyXView(0);
 991         }
 992 }
 993
 994
 995 bool GuiApplication::closeAllViews()
 996 {
 997         if (d->views_.empty())
 998                 return true;
 999
1000         QList<GuiView *> views = d->views_.values();
1001         foreach (GuiView * view, views) {
1002                 if (!view->close())
1003                         return false;
1004         }
1005
1006         d->views_.clear();
1007         return true;
1008 }
1009
1010
1011 GuiView & GuiApplication::view(int id) const
1012 {
1013         LASSERT(d->views_.contains(id), /**/);
1014         return *d->views_.value(id);
1015 }
1016
1017
1018 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1019 {
1020         QList<GuiView *> views = d->views_.values();
1021         foreach (GuiView * view, views)
1022                 view->hideDialog(name, inset);
1023 }
1024
1025
1026 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1027 {
1028         Buffer const * buffer_ = 0;
1029         QHash<int, GuiView *>::iterator end = d->views_.end();
1030         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1031                 if (Buffer const * ptr = (*it)->updateInset(inset))
1032                         buffer_ = ptr;
1033         }
1034         return buffer_;
1035 }
1036
1037
1038 void GuiApplication::readMenus(Lexer & lex)
1039 {
1040         menus().read(lex);
1041 }
1042
1043
1044 bool GuiApplication::searchMenu(FuncRequest const & func,
1045         vector<docstring> & names) const
1046 {
1047         return menus().searchMenu(func, names);
1048 }
1049
1050
1051 bool GuiApplication::readUIFile(string const & name, bool include)
1052 {
1053         enum {
1054                 ui_menuset = 1,
1055                 ui_toolbars,
1056                 ui_toolbarset,
1057                 ui_include,
1058                 ui_last
1059         };
1060
1061         LexerKeyword uitags[] = {
1062                 { "include", ui_include },
1063                 { "menuset", ui_menuset },
1064                 { "toolbars", ui_toolbars },
1065                 { "toolbarset", ui_toolbarset }
1066         };
1067
1068         // Ensure that a file is read only once (prevents include loops)
1069         static list<string> uifiles;
1070         list<string>::const_iterator it  = uifiles.begin();
1071         list<string>::const_iterator end = uifiles.end();
1072         it = find(it, end, name);
1073         if (it != end) {
1074                 LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1075                                     << "Is this an include loop?");
1076                 return false;
1077         }
1078
1079         LYXERR(Debug::INIT, "About to read " << name << "...");
1080
1081
1082         FileName ui_path;
1083         if (include) {
1084                 ui_path = libFileSearch("ui", toqstr(name), "inc");
1085                 if (ui_path.empty())
1086                         ui_path = libFileSearch("ui",
1087                                                 changeExtension(toqstr(name), "inc"));
1088         }
1089         else
1090                 ui_path = libFileSearch("ui", toqstr(name), "ui");
1091
1092         if (ui_path.empty()) {
1093                 LYXERR(Debug::INIT, "Could not find " << name);
1094                 Alert::warning(_("Could not find UI defintion file"),
1095                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1096                                    "Please check your installation."), from_utf8(name)));
1097                 return false;
1098         }
1099
1100         uifiles.push_back(name);
1101
1102         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1103         Lexer lex(uitags);
1104         lex.setFile(ui_path);
1105         if (!lex.isOK()) {
1106                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1107                        << endl;
1108         }
1109
1110         if (lyxerr.debugging(Debug::PARSER))
1111                 lex.printTable(lyxerr);
1112
1113         while (lex.isOK()) {
1114                 switch (lex.lex()) {
1115                 case ui_include: {
1116                         lex.next(true);
1117                         string const file = lex.getString();
1118                         if (!readUIFile(file, true))
1119                                 return false;
1120                         break;
1121                 }
1122                 case ui_menuset:
1123                         readMenus(lex);
1124                         break;
1125
1126                 case ui_toolbarset:
1127                         toolbarbackend.readToolbars(lex);
1128                         break;
1129
1130                 case ui_toolbars:
1131                         toolbarbackend.readToolbarSettings(lex);
1132                         break;
1133
1134                 default:
1135                         if (!rtrim(lex.getString()).empty())
1136                                 lex.printError("LyX::ReadUIFile: "
1137                                                "Unknown menu tag: `$$Token'");
1138                         break;
1139                 }
1140         }
1141         return true;
1142 }
1143
1144
1145 void GuiApplication::onLastWindowClosed()
1146 {
1147         if (d->global_menubar_)
1148                 d->global_menubar_->grabKeyboard();
1149 }
1150
1151
1152 ////////////////////////////////////////////////////////////////////////
1153 //
1154 // X11 specific stuff goes here...
1155
1156 #ifdef Q_WS_X11
1157 bool GuiApplication::x11EventFilter(XEvent * xev)
1158 {
1159         if (!current_view_)
1160                 return false;
1161
1162         switch (xev->type) {
1163         case SelectionRequest: {
1164                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1165                         break;
1166                 LYXERR(Debug::GUI, "X requested selection.");
1167                 BufferView * bv = current_view_->view();
1168                 if (bv) {
1169                         docstring const sel = bv->requestSelection();
1170                         if (!sel.empty())
1171                                 d->selection_.put(sel);
1172                 }
1173                 break;
1174         }
1175         case SelectionClear: {
1176                 if (xev->xselectionclear.selection != XA_PRIMARY)
1177                         break;
1178                 LYXERR(Debug::GUI, "Lost selection.");
1179                 BufferView * bv = current_view_->view();
1180                 if (bv)
1181                         bv->clearSelection();
1182                 break;
1183         }
1184         }
1185         return false;
1186 }
1187 #endif
1188
1189 } // namespace frontend
1190
1191
1192 void hideDialogs(std::string const & name, Inset * inset)
1193 {
1194         if (theApp())
1195                 theApp()->hideDialogs(name, inset);
1196 }
1197
1198
1199 ////////////////////////////////////////////////////////////////////
1200 //
1201 // Font stuff
1202 //
1203 ////////////////////////////////////////////////////////////////////
1204
1205 frontend::FontLoader & theFontLoader()
1206 {
1207         LASSERT(frontend::guiApp, /**/);
1208         return frontend::guiApp->fontLoader();
1209 }
1210
1211
1212 frontend::FontMetrics const & theFontMetrics(Font const & f)
1213 {
1214         return theFontMetrics(f.fontInfo());
1215 }
1216
1217
1218 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1219 {
1220         LASSERT(frontend::guiApp, /**/);
1221         return frontend::guiApp->fontLoader().metrics(f);
1222 }
1223
1224
1225 ////////////////////////////////////////////////////////////////////
1226 //
1227 // Misc stuff
1228 //
1229 ////////////////////////////////////////////////////////////////////
1230
1231 frontend::Clipboard & theClipboard()
1232 {
1233         LASSERT(frontend::guiApp, /**/);
1234         return frontend::guiApp->clipboard();
1235 }
1236
1237
1238 frontend::Selection & theSelection()
1239 {
1240         LASSERT(frontend::guiApp, /**/);
1241         return frontend::guiApp->selection();
1242 }
1243
1244 } // namespace lyx
1245
1246 #include "GuiApplication_moc.cpp"