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 <QFileOpenEvent>
  41 #include <QLocale>
  42 #include <QLibraryInfo>
  43 #include <QTextCodec>
  44 #include <QTimer>
  45 #include <QTranslator>
  46 #include <QWidget>
  47
  48 #ifdef Q_WS_X11
  49 #include <X11/Xlib.h>
  50 #endif
  51
  52 #include <boost/bind.hpp>
  53
  54 using std::string;
  55 using std::endl;
  56
  57 // in QLyXKeySym.C
  58 extern void initEncodings();
  59
  60 ///////////////////////////////////////////////////////////////
  61 // You can find other X11 and MACX specific stuff
  62 // at the end of this file...
  63 ///////////////////////////////////////////////////////////////
  64
  65 namespace {
  66
  67 int getDPI()
  68 {
  69         QWidget w;
  70         return int(0.5 * (w.logicalDpiX() + w.logicalDpiY()));
  71 }
  72
  73 } // namespace anon
  74
  75
  76 namespace lyx {
  77
  78 frontend::Application * createApplication(int & argc, char * argv[])
  79 {
  80         return new frontend::GuiApplication(argc, argv);
  81 }
  82
  83
  84 namespace frontend {
  85
  86 GuiApplication * guiApp;
  87
  88
  89 GuiApplication::~GuiApplication()
  90 {
  91         socket_callbacks_.clear();
  92 }
  93
  94
  95 GuiApplication::GuiApplication(int & argc, char ** argv)
  96         : QApplication(argc, argv), Application(argc, argv)
  97 {
  98 #ifdef Q_WS_X11
  99         // doubleClickInterval() is 400 ms on X11 which is just too long.
 100         // On Windows and Mac OS X, the operating system's value is used.
 101         // On Microsoft Windows, calling this function sets the double
 102         // click interval for all applications. So we don't!
 103         QApplication::setDoubleClickInterval(300);
 104 #endif
 105
 106         // install translation file for Qt built-in dialogs
 107         QTranslator qt_trans;
 108         QString language_name = QString("qt_") + QLocale::system().name();
 109         language_name.truncate(5);
 110         if (qt_trans.load(language_name,
 111                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 112         {
 113                 qApp->installTranslator(&qt_trans);
 114                 // even if the language calls for RtL, don't do that
 115                 qApp->setLayoutDirection(Qt::LeftToRight);
 116                 lyxerr[Debug::GUI]
 117                         << "Successfully installed Qt translations for locale "
 118                         << fromqstr(language_name) << std::endl;
 119         } else
 120                 lyxerr[Debug::GUI]
 121                         << "Could not find  Qt translations for locale "
 122                         << fromqstr(language_name) << std::endl;
 123
 124 /*#ifdef Q_WS_MACX
 125         // These translations are meant to break Qt/Mac menu merging
 126         // algorithm on some entries. It lists the menu names that
 127         // should not be moved to the LyX menu
 128         QTranslator aqua_trans(0);
 129         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setting", 0,
 130                                              "do_not_merge_me"));
 131         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Config", 0,
 132                                              "do_not_merge_me"));
 133         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Options", 0,
 134                                              "do_not_merge_me"));
 135         aqua_trans.insert(QTranslatorMessage("QMenuBar", "Setup", 0,
 136                                              "do_not_merge_me"));
 137
 138         qApp->installTranslator(&aqua_trans);
 139 #endif
 140 */
 141         using namespace lyx::graphics;
 142
 143         Image::newImage = boost::bind(&QLImage::newImage);
 144         Image::loadableFormats = boost::bind(&QLImage::loadableFormats);
 145
 146         // needs to be done before reading lyxrc
 147         lyxrc.dpi = getDPI();
 148
 149         LoaderQueue::setPriority(10,100);
 150
 151         guiApp = this;
 152 }
 153
 154 Clipboard& GuiApplication::clipboard()
 155 {
 156         return clipboard_;
 157 }
 158
 159
 160 Selection& GuiApplication::selection()
 161 {
 162         return selection_;
 163 }
 164
 165
 166 int const GuiApplication::exec()
 167 {
 168         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 169         return QApplication::exec();
 170 }
 171
 172
 173 void GuiApplication::exit(int status)
 174 {
 175         QApplication::exit(status);
 176 }
 177
 178
 179 void GuiApplication::execBatchCommands()
 180 {
 181         LyX::ref().execBatchCommands();
 182 }
 183
 184
 185 string const GuiApplication::romanFontName()
 186 {
 187         QFont font;
 188         font.setKerning(false);
 189         font.setStyleHint(QFont::Serif);
 190         font.setFamily("serif");
 191
 192         return fromqstr(QFontInfo(font).family());
 193 }
 194
 195
 196 string const GuiApplication::sansFontName()
 197 {
 198         QFont font;
 199         font.setKerning(false);
 200         font.setStyleHint(QFont::SansSerif);
 201         font.setFamily("sans");
 202
 203         return fromqstr(QFontInfo(font).family());
 204 }
 205
 206
 207 string const GuiApplication::typewriterFontName()
 208 {
 209         QFont font;
 210         font.setKerning(false);
 211         font.setStyleHint(QFont::TypeWriter);
 212         font.setFamily("monospace");
 213
 214         return fromqstr(QFontInfo(font).family());
 215 }
 216
 217
 218 bool GuiApplication::event(QEvent * e)
 219 {
 220         switch(e->type()) {
 221         case QEvent::FileOpen: {
 222                 // Open a file; this happens only on Mac OS X for now
 223                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 224                 lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 225                                           fromqstr(foe->file())));
 226                 return true;
 227         }
 228         default:
 229                 return false;
 230         }
 231 }
 232
 233
 234 void GuiApplication::syncEvents()
 235 {
 236         // This is the ONLY place where processEvents may be called.
 237         // During screen update/ redraw, this method is disabled to
 238         // prevent keyboard events being handed to the LyX core, where
 239         // they could cause re-entrant calls to screen update.
 240         processEvents(QEventLoop::ExcludeUserInputEvents);
 241 }
 242
 243
 244 bool GuiApplication::getRgbColor(LColor_color col,
 245         lyx::RGBColor & rgbcol)
 246 {
 247         QColor const & qcol = color_cache_.get(col);
 248         if (!qcol.isValid()) {
 249                 rgbcol.r = 0;
 250                 rgbcol.g = 0;
 251                 rgbcol.b = 0;
 252                 return false;
 253         }
 254         rgbcol.r = qcol.red();
 255         rgbcol.g = qcol.green();
 256         rgbcol.b = qcol.blue();
 257         return true;
 258 }
 259
 260
 261 string const GuiApplication::hexName(LColor_color col)
 262 {
 263         return lyx::support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 264 }
 265
 266
 267 void GuiApplication::updateColor(LColor_color)
 268 {
 269         // FIXME: Bleh, can't we just clear them all at once ?
 270         color_cache_.clear();
 271 }
 272
 273
 274 void GuiApplication::registerSocketCallback(int fd, boost::function<void()> func)
 275 {
 276         socket_callbacks_[fd] =
 277                 boost::shared_ptr<socket_callback>(new socket_callback(fd, func));
 278 }
 279
 280 template<>
 281 void Application::unregisterSocketCallback<int>(int fd)
 282 {
 283         GuiApplication* ptr = static_cast<GuiApplication*>(this);
 284         ptr->unregisterSocketCallbackImpl(fd);
 285 }
 286
 287 void GuiApplication::unregisterSocketCallbackImpl(int fd)
 288 {
 289         socket_callbacks_.erase(fd);
 290 }
 291
 292 ////////////////////////////////////////////////////////////////////////
 293 // X11 specific stuff goes here...
 294 #ifdef Q_WS_X11
 295 bool GuiApplication::x11EventFilter(XEvent * xev)
 296 {
 297         BufferView * bv = currentView().view();
 298
 299         switch (xev->type) {
 300         case SelectionRequest:
 301                 lyxerr[Debug::GUI] << "X requested selection." << endl;
 302                 if (bv) {
 303                         lyx::docstring const sel = bv->requestSelection();
 304                         if (!sel.empty())
 305                                 selection_.put(sel);
 306                 }
 307                 break;
 308         case SelectionClear:
 309                 lyxerr[Debug::GUI] << "Lost selection." << endl;
 310                 if (bv)
 311                         bv->clearSelection();
 312                 break;
 313         }
 314         return false;
 315 }
 316 #endif
 317
 318
 319 } // namespace frontend
 320 } // namespace lyx
 321
 322 #include "GuiApplication_moc.cpp"