src/frontends/qt4/GuiApplication.C

   1 /**
   2  * \file qt4/GuiApplication.C
   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 "QLImage.h"
  19 #include "socket_callback.h"
  20
  21 #include "frontends/LyXView.h"
  22
  23 #include "graphics/LoaderQueue.h"
  24
  25 #include "support/lstrings.h"
  26 #include "support/os.h"
  27 #include "support/package.h"
  28
  29 #include "BufferView.h"
  30 #include "Color.h"
  31 #include "debug.h"
  32 #include "funcrequest.h"
  33 #include "lyx_main.h"
  34 #include "lyxfunc.h"
  35 #include "lyxrc.h"
  36
  37 #include <QApplication>
  38 #include <QClipboard>
  39 #include <QEventLoop>
  40 #include <QLocale>
  41 #include <QLibraryInfo>
  42 #include <QTextCodec>
  43 #include <QTranslator>
  44 #include <QWidget>
  45
  46 #ifdef Q_WS_X11
  47 #include <X11/Xlib.h>
  48 #endif
  49
  50 #include <boost/bind.hpp>
  51
  52 using std::string;
  53 using std::endl;
  54
  55 // in QLyXKeySym.C
  56 extern void initEncodings();
  57
  58 ///////////////////////////////////////////////////////////////
  59 // You can find other X11 and MACX specific stuff
  60 // at the end of this file...
  61 ///////////////////////////////////////////////////////////////
  62
  63 namespace {
  64
  65 int getDPI()
  66 {
  67         QWidget w;
  68         return int(0.5 * (w.logicalDpiX() + w.logicalDpiY()));
  69 }
  70
  71 } // namespace anon
  72
  73
  74 namespace lyx {
  75
  76 frontend::Application * createApplication(int & argc, char * argv[])
  77 {
  78         return new frontend::GuiApplication(argc, argv);
  79 }
  80
  81
  82 namespace frontend {
  83
  84 GuiApplication * guiApp;
  85
  86
  87 GuiApplication::~GuiApplication()
  88 {
  89         socket_callbacks_.clear();
  90 }
  91
  92
  93 GuiApplication::GuiApplication(int & argc, char ** argv)
  94         : QApplication(argc, argv), Application(argc, argv)
  95 {
  96 #ifdef Q_WS_X11
  97         // doubleClickInterval() is 400 ms on X11 which is just too long.
  98         // On Windows and Mac OS X, the operating system's value is used.
  99         // On Microsoft Windows, calling this function sets the double
 100         // click interval for all applications. So we don't!
 101         QApplication::setDoubleClickInterval(300);
 102 #endif
 103
 104 #ifdef Q_WS_MACX
 105         AEInstallEventHandler(kCoreEventClass, kAEOpenDocuments,
 106                               NewAEEventHandlerUPP(handleOpenDocuments),
 107                               0, false);
 108 #endif
 109
 110         // install translation file for Qt built-in dialogs
 111         QTranslator qt_trans;
 112         QString language_name = QString("qt_") + QLocale::system().name();
 113         language_name.truncate(5);
 114         if (qt_trans.load(language_name,
 115                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 116         {
 117                 qApp->installTranslator(&qt_trans);
 118                 // even if the language calls for RtL, don't do that
 119                 qApp->setLayoutDirection(Qt::LeftToRight);
 120                 lyxerr[Debug::GUI]
 121                         << "Successfully installed Qt translations for locale "
 122                         << fromqstr(language_name) << std::endl;
 123         } else
 124                 lyxerr[Debug::GUI]
 125                         << "Could not find  Qt translations for locale "
 126                         << fromqstr(language_name) << std::endl;
 127
 128 /*#ifdef Q_WS_MACX
 129         // These translations are meant to break Qt/Mac menu merging
 130         // algorithm on some entries. It lists the menu names that
 131         // should not be moved to the LyX menu
 132         QTranslator aqua_trans(0);
 133         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setting", 0,
 134                                              "do_not_merge_me"));
 135         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Config", 0,
 136                                              "do_not_merge_me"));
 137         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Options", 0,
 138                                              "do_not_merge_me"));
 139         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setup", 0,
 140                                              "do_not_merge_me"));
 141
 142         qApp->installTranslator(&aqua_trans);
 143 #endif
 144 */
 145         using namespace lyx::graphics;
 146
 147         Image::newImage = boost::bind(&QLImage::newImage);
 148         Image::loadableFormats = boost::bind(&QLImage::loadableFormats);
 149
 150         // needs to be done before reading lyxrc
 151         lyxrc.dpi = getDPI();
 152
 153         LoaderQueue::setPriority(10,100);
 154
 155         setQuitOnLastWindowClosed(false);
 156         QObject::connect(this, SIGNAL(lastWindowClosed()),
 157                 this, SLOT(quitLyX()));
 158
 159         guiApp = this;
 160 }
 161
 162
 163 void GuiApplication::quitLyX()
 164 {
 165         theLyXFunc().setLyXView(0);
 166
 167         // trigger LFUN_LYX_QUIT instead of QApplication::quit() directly
 168         // since LFUN_LYX_QUIT may have more cleanup stuff
 169         dispatch(FuncRequest(LFUN_LYX_QUIT, "force"));
 170 }
 171
 172
 173 Clipboard& GuiApplication::clipboard()
 174 {
 175         return clipboard_;
 176 }
 177
 178
 179 Selection& GuiApplication::selection()
 180 {
 181         return selection_;
 182 }
 183
 184
 185 int const GuiApplication::exec()
 186 {
 187         return QApplication::exec();
 188 }
 189
 190
 191 void GuiApplication::exit(int status)
 192 {
 193         QApplication::exit(status);
 194 }
 195
 196
 197 string const GuiApplication::romanFontName()
 198 {
 199         QFont font;
 200         font.setKerning(false);
 201         font.setStyleHint(QFont::Serif);
 202         font.setFamily("serif");
 203
 204         return fromqstr(QFontInfo(font).family());
 205 }
 206
 207
 208 string const GuiApplication::sansFontName()
 209 {
 210         QFont font;
 211         font.setKerning(false);
 212         font.setStyleHint(QFont::SansSerif);
 213         font.setFamily("sans");
 214
 215         return fromqstr(QFontInfo(font).family());
 216 }
 217
 218
 219 string const GuiApplication::typewriterFontName()
 220 {
 221         QFont font;
 222         font.setKerning(false);
 223         font.setStyleHint(QFont::TypeWriter);
 224         font.setFamily("monospace");
 225
 226         return fromqstr(QFontInfo(font).family());
 227 }
 228
 229
 230 void GuiApplication::syncEvents()
 231 {
 232         // This is the ONLY place where processEvents may be called.
 233         // During screen update/ redraw, this method is disabled to
 234         // prevent keyboard events being handed to the LyX core, where
 235         // they could cause re-entrant calls to screen update.
 236         processEvents(QEventLoop::ExcludeUserInputEvents);
 237 }
 238
 239
 240 bool GuiApplication::getRgbColor(LColor_color col,
 241         lyx::RGBColor & rgbcol)
 242 {
 243         QColor const & qcol = color_cache_.get(col);
 244         if (!qcol.isValid()) {
 245                 rgbcol.r = 0;
 246                 rgbcol.g = 0;
 247                 rgbcol.b = 0;
 248                 return false;
 249         }
 250         rgbcol.r = qcol.red();
 251         rgbcol.g = qcol.green();
 252         rgbcol.b = qcol.blue();
 253         return true;
 254 }
 255
 256
 257 string const GuiApplication::hexName(LColor_color col)
 258 {
 259         return lyx::support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 260 }
 261
 262
 263 void GuiApplication::updateColor(LColor_color)
 264 {
 265         // FIXME: Bleh, can't we just clear them all at once ?
 266         color_cache_.clear();
 267 }
 268
 269
 270 void GuiApplication::registerSocketCallback(int fd, boost::function<void()> func)
 271 {
 272         socket_callbacks_[fd] =
 273                 boost::shared_ptr<socket_callback>(new socket_callback(fd, func));
 274 }
 275
 276
 277 void GuiApplication::unregisterSocketCallback(int fd)
 278 {
 279         socket_callbacks_.erase(fd);
 280 }
 281
 282 ////////////////////////////////////////////////////////////////////////
 283 // X11 specific stuff goes here...
 284 #ifdef Q_WS_X11
 285 bool GuiApplication::x11EventFilter(XEvent * xev)
 286 {
 287         BufferView * bv = currentView().view();
 288
 289         switch (xev->type) {
 290         case SelectionRequest:
 291                 lyxerr[Debug::GUI] << "X requested selection." << endl;
 292                 if (bv) {
 293                         lyx::docstring const sel = bv->requestSelection();
 294                         if (!sel.empty())
 295                                 selection_.put(sel);
 296                 }
 297                 break;
 298         case SelectionClear:
 299                 lyxerr[Debug::GUI] << "Lost selection." << endl;
 300                 if (bv)
 301                         bv->clearSelection();
 302                 break;
 303         }
 304         return false;
 305 }
 306 #endif
 307
 308
 309 ////////////////////////////////////////////////////////////////////////
 310 // Mac OSX specific stuff goes here...
 311
 312 #ifdef Q_WS_MACX
 313 namespace{
 314
 315 OSErr checkAppleEventForMissingParams(const AppleEvent& theAppleEvent)
 316  {
 317         DescType returnedType;
 318         Size actualSize;
 319         OSErr err = AEGetAttributePtr(&theAppleEvent, keyMissedKeywordAttr,
 320                                       typeWildCard, &returnedType, nil, 0,
 321                                       &actualSize);
 322         switch (err) {
 323         case errAEDescNotFound:
 324                 return noErr;
 325         case noErr:
 326                 return errAEEventNotHandled;
 327         default:
 328                 return err;
 329         }
 330  }
 331
 332 } // namespace
 333
 334 OSErr GuiApplication::handleOpenDocuments(const AppleEvent* inEvent,
 335                                        AppleEvent* /*reply*/, long /*refCon*/)
 336 {
 337         QString s_arg;
 338         AEDescList documentList;
 339         OSErr err = AEGetParamDesc(inEvent, keyDirectObject, typeAEList,
 340                                    &documentList);
 341         if (err != noErr)
 342                 return err;
 343
 344         err = checkAppleEventForMissingParams(*inEvent);
 345         if (err == noErr) {
 346                 long documentCount;
 347                 err = AECountItems(&documentList, &documentCount);
 348                 for (long documentIndex = 1;
 349                      err == noErr && documentIndex <= documentCount;
 350                      documentIndex++) {
 351                         DescType returnedType;
 352                         Size actualSize;
 353                         AEKeyword keyword;
 354                         FSRef ref;
 355                         char qstr_buf[1024];
 356                         err = AESizeOfNthItem(&documentList, documentIndex,
 357                                               &returnedType, &actualSize);
 358                         if (err == noErr) {
 359                                 err = AEGetNthPtr(&documentList, documentIndex,
 360                                                   typeFSRef, &keyword,
 361                                                   &returnedType, (Ptr)&ref,
 362                                                   sizeof(FSRef), &actualSize);
 363                                 if (err == noErr) {
 364                                         FSRefMakePath(&ref, (UInt8*)qstr_buf,
 365                                                       1024);
 366                                         s_arg=QString::fromUtf8(qstr_buf);
 367 //                                      bv->workAreaDispatch(
 368 //                                              FuncRequest(LFUN_FILE_OPEN,
 369 //                                                          fromqstr(s_arg)));
 370                                         break;
 371                                 }
 372                         }
 373                 } // for ...
 374         }
 375         AEDisposeDesc(&documentList);
 376
 377         return err;
 378 }
 379
 380 bool GuiApplication::macEventFilter(EventRef event)
 381 {
 382         if (GetEventClass(event) == kEventClassAppleEvent) {
 383                 EventRecord eventrec;
 384                 ConvertEventRefToEventRecord(event, &eventrec);
 385                 AEProcessAppleEvent(&eventrec);
 386
 387                 return false;
 388         }
 389         return false;
 390 }
 391
 392 #endif  // Q_WS_MACX
 393
 394 } // namespace frontend
 395 } // namespace lyx
 396
 397 #include "GuiApplication_moc.cpp"