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