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