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 "qt_helpers.h"
  18 #include "GuiImage.h"
  19 #include "GuiView.h"
  20
  21 #include "frontends/alert.h"
  22 #include "frontends/Application.h"
  23 #include "frontends/NoGuiFontLoader.h"
  24 #include "frontends/NoGuiFontMetrics.h"
  25 #include "frontends/FontLoader.h"
  26 #include "frontends/FontMetrics.h"
  27
  28 #include "graphics/LoaderQueue.h"
  29
  30 #include "support/ExceptionMessage.h"
  31 #include "support/FileName.h"
  32 #include "support/lstrings.h"
  33 #include "support/os.h"
  34 #include "support/Package.h"
  35
  36 #include "BufferList.h"
  37 #include "BufferView.h"
  38 #include "debug.h"
  39 #include "Font.h"
  40 #include "FuncRequest.h"
  41 #include "gettext.h"
  42 #include "LyX.h"
  43 #include "LyXFunc.h"
  44 #include "LyXRC.h"
  45 #include "version.h"
  46
  47 #include <QApplication>
  48 #include <QClipboard>
  49 #include <QEventLoop>
  50 #include <QFileOpenEvent>
  51 #include <QLocale>
  52 #include <QLibraryInfo>
  53 #include <QPixmapCache>
  54 #include <QRegExp>
  55 #include <QSessionManager>
  56 #include <QSocketNotifier>
  57 #include <QTextCodec>
  58 #include <QTimer>
  59 #include <QTranslator>
  60 #include <QWidget>
  61
  62 #ifdef Q_WS_X11
  63 #include <X11/Xatom.h>
  64 #include <X11/Xlib.h>
  65 #undef CursorShape
  66 #undef None
  67 #endif
  68
  69 #include <boost/bind.hpp>
  70
  71 #include <exception>
  72
  73 using std::endl;
  74 using std::map;
  75 using std::string;
  76 using std::vector;
  77
  78
  79 namespace lyx {
  80
  81 frontend::Application * createApplication(int & argc, char * argv[])
  82 {
  83         return new frontend::GuiApplication(argc, argv);
  84 }
  85
  86
  87 namespace frontend {
  88
  89 class SocketNotifier : public QSocketNotifier
  90 {
  91 public:
  92         /// connect a connection notification from the LyXServerSocket
  93         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
  94                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
  95         {}
  96
  97 public:
  98         /// The callback function
  99         Application::SocketCallback func_;
 100 };
 101
 102
 103 ////////////////////////////////////////////////////////////////////////
 104 // Mac specific stuff goes here...
 105
 106 class MenuTranslator : public QTranslator
 107 {
 108 public:
 109         MenuTranslator(QObject * parent)
 110                 : QTranslator(parent)
 111         {}
 112
 113         QString translate(const char * /*context*/,
 114           const char * sourceText,
 115           const char * /*comment*/ = 0)
 116         {
 117                 string const s = sourceText;
 118                 if (s == N_("About %1") || s == N_("Preferences")
 119                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 120                         return qt_(s);
 121                 else
 122                         return QString();
 123         }
 124 };
 125
 126
 127 ///////////////////////////////////////////////////////////////
 128 // You can find more platform specific stuff
 129 // at the end of this file...
 130 ///////////////////////////////////////////////////////////////
 131
 132
 133 using support::FileName;
 134
 135 GuiApplication * guiApp;
 136
 137
 138 GuiApplication::GuiApplication(int & argc, char ** argv)
 139         : QApplication(argc, argv), Application(), current_view_(0)
 140 {
 141         QString app_name = "LyX";
 142         QCoreApplication::setOrganizationName(app_name);
 143         QCoreApplication::setOrganizationDomain("lyx.org");
 144         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 145
 146         // Qt bug? setQuitOnLastWindowClosed(true); does not work
 147         setQuitOnLastWindowClosed(false);
 148
 149 #ifdef Q_WS_X11
 150         // doubleClickInterval() is 400 ms on X11 which is just too long.
 151         // On Windows and Mac OS X, the operating system's value is used.
 152         // On Microsoft Windows, calling this function sets the double
 153         // click interval for all applications. So we don't!
 154         QApplication::setDoubleClickInterval(300);
 155 #endif
 156
 157         // install translation file for Qt built-in dialogs
 158         QString language_name = QString("qt_") + QLocale::system().name();
 159
 160         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 161         // Short-named translator can be loaded from a long name, but not the
 162         // opposite. Therefore, long name should be used without truncation.
 163         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 164         if (qt_trans_.load(language_name,
 165                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 166         {
 167                 installTranslator(&qt_trans_);
 168                 // even if the language calls for RtL, don't do that
 169                 setLayoutDirection(Qt::LeftToRight);
 170                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 171                         << fromqstr(language_name));
 172         } else
 173                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 174                         << fromqstr(language_name));
 175
 176 #ifdef Q_WS_MACX
 177         // This allows to translate the strings that appear in the LyX menu.
 178         addMenuTranslator();
 179 #endif
 180
 181         using namespace lyx::graphics;
 182
 183         Image::newImage = boost::bind(&GuiImage::newImage);
 184         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 185
 186         // needs to be done before reading lyxrc
 187         QWidget w;
 188         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 189
 190         LoaderQueue::setPriority(10,100);
 191
 192         guiApp = this;
 193
 194         // Set the cache to 5120 kilobytes which corresponds to screen size of
 195         // 1280 by 1024 pixels with a color depth of 32 bits.
 196         QPixmapCache::setCacheLimit(5120);
 197
 198         // Initialize RC Fonts
 199         if (lyxrc.roman_font_name.empty())
 200                 lyxrc.roman_font_name = fromqstr(romanFontName());
 201
 202         if (lyxrc.sans_font_name.empty())
 203                 lyxrc.sans_font_name = fromqstr(sansFontName());
 204
 205         if (lyxrc.typewriter_font_name.empty())
 206                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 207 }
 208
 209
 210 GuiApplication::~GuiApplication()
 211 {
 212         socket_notifiers_.clear();
 213 }
 214
 215
 216 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 217 {
 218         ids.clear();
 219         map<int, GuiView *>::const_iterator it;
 220         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 221                 ids.push_back(it->first);
 222 }
 223
 224
 225 LyXView & GuiApplication::createView(string const & geometry_arg)
 226 {
 227         updateIds(views_, view_ids_);
 228         int id = 0;
 229         while (views_.find(id) != views_.end())
 230                 id++;
 231         views_[id] = new GuiView(id);
 232         updateIds(views_, view_ids_);
 233
 234         GuiView * view  = views_[id];
 235         theLyXFunc().setLyXView(view);
 236
 237         view->init();
 238         view->show();
 239         if (!geometry_arg.empty()) {
 240 #ifdef Q_WS_WIN
 241                 int x, y;
 242                 int w, h;
 243                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 244                 re.indexIn(toqstr(geometry_arg.c_str()));
 245                 w = re.cap(1).toInt();
 246                 h = re.cap(2).toInt();
 247                 x = re.cap(3).toInt();
 248                 y = re.cap(4).toInt();
 249                 view->setGeometry(x, y, w, h);
 250 #endif
 251         }
 252         view->setFocus();
 253
 254         setCurrentView(*view);
 255
 256         return *view;
 257 }
 258
 259
 260
 261
 262 Clipboard & GuiApplication::clipboard()
 263 {
 264         return clipboard_;
 265 }
 266
 267
 268 Selection & GuiApplication::selection()
 269 {
 270         return selection_;
 271 }
 272
 273
 274 int GuiApplication::exec()
 275 {
 276         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 277         return QApplication::exec();
 278 }
 279
 280
 281 void GuiApplication::exit(int status)
 282 {
 283         QApplication::exit(status);
 284 }
 285
 286
 287 void GuiApplication::execBatchCommands()
 288 {
 289         LyX::ref().execBatchCommands();
 290 }
 291
 292
 293 QString const GuiApplication::romanFontName()
 294 {
 295         QFont font;
 296         font.setKerning(false);
 297         font.setStyleHint(QFont::Serif);
 298         font.setFamily("serif");
 299
 300         return QFontInfo(font).family();
 301 }
 302
 303
 304 QString const GuiApplication::sansFontName()
 305 {
 306         QFont font;
 307         font.setKerning(false);
 308         font.setStyleHint(QFont::SansSerif);
 309         font.setFamily("sans");
 310
 311         return QFontInfo(font).family();
 312 }
 313
 314
 315 QString const GuiApplication::typewriterFontName()
 316 {
 317         QFont font;
 318         font.setKerning(false);
 319         font.setStyleHint(QFont::TypeWriter);
 320         font.setFamily("monospace");
 321
 322         return QFontInfo(font).family();
 323 }
 324
 325
 326 bool GuiApplication::event(QEvent * e)
 327 {
 328         switch(e->type()) {
 329         case QEvent::FileOpen: {
 330                 // Open a file; this happens only on Mac OS X for now
 331                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 332
 333                 if (!current_view_ || !current_view_->view())
 334                         // The application is not properly initialized yet.
 335                         // So we acknowledge the event and delay the file opening
 336                         // until LyX is ready.
 337                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 338                         LyX::ref().addFileToLoad(FileName(fromqstr(foe->file())));
 339                 else
 340                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 341                                 qstring_to_ucs4(foe->file())));
 342
 343                 e->accept();
 344                 return true;
 345         }
 346         default:
 347                 return QApplication::event(e);
 348         }
 349 }
 350
 351
 352 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 353 {
 354         try {
 355                 return QApplication::notify(receiver, event);
 356         }
 357         catch (support::ExceptionMessage const & e) {
 358                 if (e.type_ == support::ErrorException) {
 359                         Alert::error(e.title_, e.details_);
 360                         LyX::cref().emergencyCleanup();
 361                         QApplication::exit(1);
 362                 } else if (e.type_ == support::WarningException) {
 363                         Alert::warning(e.title_, e.details_);
 364                         return false;
 365                 }
 366         }
 367         catch (std::exception const & e) {
 368                 docstring s = _("LyX has caught an exception, it will now "
 369                         "attemp to save all unsaved documents and exit."
 370                         "\n\nException: ");
 371                 s += from_ascii(e.what());
 372                 Alert::error(_("Software exception Detected"), s);
 373                 LyX::cref().emergencyCleanup();
 374                 QApplication::exit(1);
 375         }
 376         catch (...) {
 377                 docstring s = _("LyX has caught some really weird exception, it will "
 378                         "now attemp to save all unsaved documents and exit.");
 379                 Alert::error(_("Software exception Detected"), s);
 380                 LyX::cref().emergencyCleanup();
 381                 QApplication::exit(1);
 382         }
 383
 384         return false;
 385 }
 386
 387
 388 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 389 {
 390         QColor const & qcol = color_cache_.get(col);
 391         if (!qcol.isValid()) {
 392                 rgbcol.r = 0;
 393                 rgbcol.g = 0;
 394                 rgbcol.b = 0;
 395                 return false;
 396         }
 397         rgbcol.r = qcol.red();
 398         rgbcol.g = qcol.green();
 399         rgbcol.b = qcol.blue();
 400         return true;
 401 }
 402
 403
 404 string const GuiApplication::hexName(ColorCode col)
 405 {
 406         return support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 407 }
 408
 409
 410 void GuiApplication::updateColor(ColorCode)
 411 {
 412         // FIXME: Bleh, can't we just clear them all at once ?
 413         color_cache_.clear();
 414 }
 415
 416
 417 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 418 {
 419         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 420         socket_notifiers_[fd] = sn;
 421         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 422 }
 423
 424
 425 void GuiApplication::socketDataReceived(int fd)
 426 {
 427         socket_notifiers_[fd]->func_();
 428 }
 429
 430
 431 void GuiApplication::unregisterSocketCallback(int fd)
 432 {
 433         socket_notifiers_.erase(fd);
 434 }
 435
 436
 437 void GuiApplication::commitData(QSessionManager & sm)
 438 {
 439         /// The implementation is required to avoid an application exit
 440         /// when session state save is triggered by session manager.
 441         /// The default implementation sends a close event to all
 442         /// visible top level widgets when session managment allows
 443         /// interaction.
 444         /// We are changing that to write all unsaved buffers...
 445         if (sm.allowsInteraction() && !theBufferList().quitWriteAll())
 446                 sm.cancel();
 447 }
 448
 449
 450 void GuiApplication::addMenuTranslator()
 451 {
 452         installTranslator(new MenuTranslator(this));
 453 }
 454
 455
 456 bool GuiApplication::unregisterView(int id)
 457 {
 458         updateIds(views_, view_ids_);
 459         BOOST_ASSERT(views_.find(id) != views_.end());
 460         BOOST_ASSERT(views_[id]);
 461
 462         map<int, GuiView *>::iterator it;
 463         for (it = views_.begin(); it != views_.end(); ++it) {
 464                 if (it->first == id) {
 465                         views_.erase(id);
 466                         break;
 467                 }
 468         }
 469         updateIds(views_, view_ids_);
 470         return true;
 471 }
 472
 473
 474 bool GuiApplication::closeAllViews()
 475 {
 476         updateIds(views_, view_ids_);
 477         if (views_.empty()) {
 478                 // quit in CloseEvent will not be triggert
 479                 qApp->quit();
 480                 return true;
 481         }
 482
 483         map<int, GuiView*> const cmap = views_;
 484         map<int, GuiView*>::const_iterator it;
 485         for (it = cmap.begin(); it != cmap.end(); ++it) {
 486                 // TODO: return false when close event was ignored
 487                 //       e.g. quitWriteAll()->'Cancel'
 488                 //       maybe we need something like 'bool closeView()'
 489                 it->second->close();
 490                 // unregisterd by the CloseEvent
 491         }
 492
 493         views_.clear();
 494         view_ids_.clear();
 495         return true;
 496 }
 497
 498
 499 LyXView & GuiApplication::view(int id) const
 500 {
 501         BOOST_ASSERT(views_.find(id) != views_.end());
 502         return *views_.find(id)->second;
 503 }
 504
 505
 506 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 507 {
 508         vector<int>::const_iterator it = view_ids_.begin();
 509         vector<int>::const_iterator const end = view_ids_.end();
 510         for (; it != end; ++it)
 511                 view(*it).hideDialog(name, inset);
 512 }
 513
 514
 515 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 516 {
 517         Buffer const * buffer_ = 0;
 518         vector<int>::const_iterator it = view_ids_.begin();
 519         vector<int>::const_iterator const end = view_ids_.end();
 520         for (; it != end; ++it) {
 521                 Buffer const * ptr = view(*it).updateInset(inset);
 522                 if (ptr)
 523                         buffer_ = ptr;
 524         }
 525         return buffer_;
 526 }
 527
 528
 529 ////////////////////////////////////////////////////////////////////////
 530 // X11 specific stuff goes here...
 531 #ifdef Q_WS_X11
 532 bool GuiApplication::x11EventFilter(XEvent * xev)
 533 {
 534         if (!current_view_)
 535                 return false;
 536
 537         switch (xev->type) {
 538         case SelectionRequest: {
 539                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 540                         break;
 541                 LYXERR(Debug::GUI, "X requested selection.");
 542                 BufferView * bv = current_view_->view();
 543                 if (bv) {
 544                         docstring const sel = bv->requestSelection();
 545                         if (!sel.empty())
 546                                 selection_.put(sel);
 547                 }
 548                 break;
 549         }
 550         case SelectionClear: {
 551                 if (xev->xselectionclear.selection != XA_PRIMARY)
 552                         break;
 553                 LYXERR(Debug::GUI, "Lost selection.");
 554                 BufferView * bv = current_view_->view();
 555                 if (bv)
 556                         bv->clearSelection();
 557                 break;
 558         }
 559         }
 560         return false;
 561 }
 562 #endif
 563
 564 } // namespace frontend
 565
 566
 567 ////////////////////////////////////////////////////////////////////
 568 //
 569 // Font stuff
 570 //
 571 ////////////////////////////////////////////////////////////////////
 572
 573 frontend::FontLoader & theFontLoader()
 574 {
 575         static frontend::NoGuiFontLoader no_gui_font_loader;
 576
 577         if (!use_gui)
 578                 return no_gui_font_loader;
 579
 580         BOOST_ASSERT(frontend::guiApp);
 581         return frontend::guiApp->fontLoader();
 582 }
 583
 584
 585 frontend::FontMetrics const & theFontMetrics(Font const & f)
 586 {
 587         return theFontMetrics(f.fontInfo());
 588 }
 589
 590
 591 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 592 {
 593         static frontend::NoGuiFontMetrics no_gui_font_metrics;
 594
 595         if (!use_gui)
 596                 return no_gui_font_metrics;
 597
 598         BOOST_ASSERT(frontend::guiApp);
 599         return frontend::guiApp->fontLoader().metrics(f);
 600 }
 601
 602
 603 frontend::Clipboard & theClipboard()
 604 {
 605         BOOST_ASSERT(frontend::guiApp);
 606         return frontend::guiApp->clipboard();
 607 }
 608
 609
 610 frontend::Selection & theSelection()
 611 {
 612         BOOST_ASSERT(frontend::guiApp);
 613         return frontend::guiApp->selection();
 614 }
 615
 616 } // namespace lyx
 617
 618 #include "GuiApplication_moc.cpp"