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