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         // These are only installed since Qt 3.2.x
 110         QTranslator qt_trans;
 111         QString language_name = QString("qt_") + QLocale::system().name();
 112         language_name.truncate(5);
 113         if (qt_trans.load(language_name,
 114                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 115         {
 116                 qApp->installTranslator(&qt_trans);
 117                 // even if the language calls for RtL, don't do that
 118                 qApp->setLayoutDirection(Qt::LeftToRight);
 119                 lyxerr[Debug::GUI]
 120                         << "Successfully installed Qt translations for locale "
 121                         << fromqstr(language_name) << std::endl;
 122         } else
 123                 lyxerr[Debug::GUI]
 124                         << "Could not find  Qt translations for locale "
 125                         << fromqstr(language_name) << std::endl;
 126
 127 /*#ifdef Q_WS_MACX
 128         // These translations are meant to break Qt/Mac menu merging
 129         // algorithm on some entries. It lists the menu names that
 130         // should not be moved to the LyX menu
 131         QTranslator aqua_trans(0);
 132         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setting", 0,
 133                                              "do_not_merge_me"));
 134         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Config", 0,
 135                                              "do_not_merge_me"));
 136         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Options", 0,
 137                                              "do_not_merge_me"));
 138         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setup", 0,
 139                                              "do_not_merge_me"));
 140
 141         qApp->installTranslator(&aqua_trans);
 142 #endif
 143 */
 144         using namespace lyx::graphics;
 145
 146         Image::newImage = boost::bind(&QLImage::newImage);
 147         Image::loadableFormats = boost::bind(&QLImage::loadableFormats);
 148
 149         // needs to be done before reading lyxrc
 150         lyxrc.dpi = getDPI();
 151
 152         LoaderQueue::setPriority(10,100);
 153
 154         setQuitOnLastWindowClosed(false);
 155         QObject::connect(this, SIGNAL(lastWindowClosed()),
 156                 this, SLOT(quitLyX()));
 157
 158         guiApp = this;
 159 }
 160
 161
 162 void GuiApplication::quitLyX()
 163 {
 164         theLyXFunc().setLyXView(0);
 165
 166         // trigger LFUN_LYX_QUIT instead of QApplication::quit() directly
 167         // since LFUN_LYX_QUIT may have more cleanup stuff
 168         dispatch(FuncRequest(LFUN_LYX_QUIT, "force"));
 169 }
 170
 171
 172 Clipboard& GuiApplication::clipboard()
 173 {
 174         return clipboard_;
 175 }
 176
 177
 178 Selection& GuiApplication::selection()
 179 {
 180         return selection_;
 181 }
 182
 183
 184 int const GuiApplication::exec()
 185 {
 186         return QApplication::exec();
 187 }
 188
 189
 190 void GuiApplication::exit(int status)
 191 {
 192         QApplication::exit(status);
 193 }
 194
 195
 196 string const GuiApplication::romanFontName()
 197 {
 198         QFont font;
 199         font.setKerning(false);
 200         font.setStyleHint(QFont::Serif);
 201         font.setFamily("serif");
 202
 203         return fromqstr(QFontInfo(font).family());
 204 }
 205
 206
 207 string const GuiApplication::sansFontName()
 208 {
 209         QFont font;
 210         font.setKerning(false);
 211         font.setStyleHint(QFont::SansSerif);
 212         font.setFamily("sans");
 213
 214         return fromqstr(QFontInfo(font).family());
 215 }
 216
 217
 218 string const GuiApplication::typewriterFontName()
 219 {
 220         QFont font;
 221         font.setKerning(false);
 222         font.setStyleHint(QFont::TypeWriter);
 223         font.setFamily("monospace");
 224
 225         return fromqstr(QFontInfo(font).family());
 226 }
 227
 228
 229 void GuiApplication::syncEvents()
 230 {
 231         // This is the ONLY place where processEvents may be called.
 232         // During screen update/ redraw, this method is disabled to
 233         // prevent keyboard events being handed to the LyX core, where
 234         // they could cause re-entrant calls to screen update.
 235         processEvents(QEventLoop::ExcludeUserInputEvents);
 236 }
 237
 238
 239 bool GuiApplication::getRgbColor(LColor_color col,
 240         lyx::RGBColor & rgbcol)
 241 {
 242         QColor const & qcol = color_cache_.get(col);
 243         if (!qcol.isValid()) {
 244                 rgbcol.r = 0;
 245                 rgbcol.g = 0;
 246                 rgbcol.b = 0;
 247                 return false;
 248         }
 249         rgbcol.r = qcol.red();
 250         rgbcol.g = qcol.green();
 251         rgbcol.b = qcol.blue();
 252         return true;
 253 }
 254
 255
 256 string const GuiApplication::hexName(LColor_color col)
 257 {
 258         return lyx::support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 259 }
 260
 261
 262 void GuiApplication::updateColor(LColor_color)
 263 {
 264         // FIXME: Bleh, can't we just clear them all at once ?
 265         color_cache_.clear();
 266 }
 267
 268
 269 void GuiApplication::registerSocketCallback(int fd, boost::function<void()> func)
 270 {
 271         socket_callbacks_[fd] =
 272                 boost::shared_ptr<socket_callback>(new socket_callback(fd, func));
 273 }
 274
 275
 276 void GuiApplication::unregisterSocketCallback(int fd)
 277 {
 278         socket_callbacks_.erase(fd);
 279 }
 280
 281 ////////////////////////////////////////////////////////////////////////
 282 // X11 specific stuff goes here...
 283 #ifdef Q_WS_X11
 284 bool GuiApplication::x11EventFilter(XEvent * xev)
 285 {
 286         switch (xev->type) {
 287         case SelectionRequest:
 288                 lyxerr[Debug::GUI] << "X requested selection." << endl;
 289                 if (buffer_view_) {
 290                         lyx::docstring const sel = buffer_view_->requestSelection();
 291                         if (!sel.empty())
 292                                 selection_.put(sel);
 293                 }
 294                 break;
 295         case SelectionClear:
 296                 lyxerr[Debug::GUI] << "Lost selection." << endl;
 297                 if (buffer_view_)
 298                         buffer_view_->clearSelection();
 299                 break;
 300         }
 301         return false;
 302 }
 303 #endif
 304
 305
 306 ////////////////////////////////////////////////////////////////////////
 307 // Mac OSX specific stuff goes here...
 308
 309 #ifdef Q_WS_MACX
 310 namespace{
 311
 312 OSErr checkAppleEventForMissingParams(const AppleEvent& theAppleEvent)
 313  {
 314         DescType returnedType;
 315         Size actualSize;
 316         OSErr err = AEGetAttributePtr(&theAppleEvent, keyMissedKeywordAttr,
 317                                       typeWildCard, &returnedType, nil, 0,
 318                                       &actualSize);
 319         switch (err) {
 320         case errAEDescNotFound:
 321                 return noErr;
 322         case noErr:
 323                 return errAEEventNotHandled;
 324         default:
 325                 return err;
 326         }
 327  }
 328
 329 } // namespace
 330
 331 OSErr GuiApplication::handleOpenDocuments(const AppleEvent* inEvent,
 332                                        AppleEvent* /*reply*/, long /*refCon*/)
 333 {
 334         QString s_arg;
 335         AEDescList documentList;
 336         OSErr err = AEGetParamDesc(inEvent, keyDirectObject, typeAEList,
 337                                    &documentList);
 338         if (err != noErr)
 339                 return err;
 340
 341         err = checkAppleEventForMissingParams(*inEvent);
 342         if (err == noErr) {
 343                 long documentCount;
 344                 err = AECountItems(&documentList, &documentCount);
 345                 for (long documentIndex = 1;
 346                      err == noErr && documentIndex <= documentCount;
 347                      documentIndex++) {
 348                         DescType returnedType;
 349                         Size actualSize;
 350                         AEKeyword keyword;
 351                         FSRef ref;
 352                         char qstr_buf[1024];
 353                         err = AESizeOfNthItem(&documentList, documentIndex,
 354                                               &returnedType, &actualSize);
 355                         if (err == noErr) {
 356                                 err = AEGetNthPtr(&documentList, documentIndex,
 357                                                   typeFSRef, &keyword,
 358                                                   &returnedType, (Ptr)&ref,
 359                                                   sizeof(FSRef), &actualSize);
 360                                 if (err == noErr) {
 361                                         FSRefMakePath(&ref, (UInt8*)qstr_buf,
 362                                                       1024);
 363                                         s_arg=QString::fromUtf8(qstr_buf);
 364 //                                      buffer_view_->workAreaDispatch(
 365 //                                              FuncRequest(LFUN_FILE_OPEN,
 366 //                                                          fromqstr(s_arg)));
 367                                         break;
 368                                 }
 369                         }
 370                 } // for ...
 371         }
 372         AEDisposeDesc(&documentList);
 373
 374         return err;
 375 }
 376
 377 bool GuiApplication::macEventFilter(EventRef event)
 378 {
 379         if (GetEventClass(event) == kEventClassAppleEvent) {
 380                 EventRecord eventrec;
 381                 ConvertEventRefToEventRecord(event, &eventrec);
 382                 AEProcessAppleEvent(&eventrec);
 383
 384                 return false;
 385         }
 386         return false;
 387 }
 388
 389 #endif  // Q_WS_MACX
 390
 391 } // namespace frontend
 392 } // namespace lyx
 393
 394 #include "GuiApplication_moc.cpp"