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         // Qt bug? setQuitOnLastWindowClosed(true); does not work
  99         setQuitOnLastWindowClosed(false);
 100
 101 #ifdef Q_WS_X11
 102         // doubleClickInterval() is 400 ms on X11 which is just too long.
 103         // On Windows and Mac OS X, the operating system's value is used.
 104         // On Microsoft Windows, calling this function sets the double
 105         // click interval for all applications. So we don't!
 106         QApplication::setDoubleClickInterval(300);
 107 #endif
 108
 109         // install translation file for Qt built-in dialogs
 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         guiApp = this;
 155 }
 156
 157 Clipboard& GuiApplication::clipboard()
 158 {
 159         return clipboard_;
 160 }
 161
 162
 163 Selection& GuiApplication::selection()
 164 {
 165         return selection_;
 166 }
 167
 168
 169 int const GuiApplication::exec()
 170 {
 171         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 172         return QApplication::exec();
 173 }
 174
 175
 176 void GuiApplication::exit(int status)
 177 {
 178         QApplication::exit(status);
 179 }
 180
 181
 182 void GuiApplication::execBatchCommands()
 183 {
 184         LyX::ref().execBatchCommands();
 185 }
 186
 187
 188 string const GuiApplication::romanFontName()
 189 {
 190         QFont font;
 191         font.setKerning(false);
 192         font.setStyleHint(QFont::Serif);
 193         font.setFamily("serif");
 194
 195         return fromqstr(QFontInfo(font).family());
 196 }
 197
 198
 199 string const GuiApplication::sansFontName()
 200 {
 201         QFont font;
 202         font.setKerning(false);
 203         font.setStyleHint(QFont::SansSerif);
 204         font.setFamily("sans");
 205
 206         return fromqstr(QFontInfo(font).family());
 207 }
 208
 209
 210 string const GuiApplication::typewriterFontName()
 211 {
 212         QFont font;
 213         font.setKerning(false);
 214         font.setStyleHint(QFont::TypeWriter);
 215         font.setFamily("monospace");
 216
 217         return fromqstr(QFontInfo(font).family());
 218 }
 219
 220
 221 bool GuiApplication::event(QEvent * e)
 222 {
 223         switch(e->type()) {
 224         case QEvent::FileOpen: {
 225                 // Open a file; this happens only on Mac OS X for now
 226                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 227                 lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 228                                           fromqstr(foe->file())));
 229                 return true;
 230         }
 231         default:
 232                 return false;
 233         }
 234 }
 235
 236
 237 void GuiApplication::syncEvents()
 238 {
 239         // This is the ONLY place where processEvents may be called.
 240         // During screen update/ redraw, this method is disabled to
 241         // prevent keyboard events being handed to the LyX core, where
 242         // they could cause re-entrant calls to screen update.
 243         processEvents(QEventLoop::ExcludeUserInputEvents);
 244 }
 245
 246
 247 bool GuiApplication::getRgbColor(LColor_color col,
 248         lyx::RGBColor & rgbcol)
 249 {
 250         QColor const & qcol = color_cache_.get(col);
 251         if (!qcol.isValid()) {
 252                 rgbcol.r = 0;
 253                 rgbcol.g = 0;
 254                 rgbcol.b = 0;
 255                 return false;
 256         }
 257         rgbcol.r = qcol.red();
 258         rgbcol.g = qcol.green();
 259         rgbcol.b = qcol.blue();
 260         return true;
 261 }
 262
 263
 264 string const GuiApplication::hexName(LColor_color col)
 265 {
 266         return lyx::support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 267 }
 268
 269
 270 void GuiApplication::updateColor(LColor_color)
 271 {
 272         // FIXME: Bleh, can't we just clear them all at once ?
 273         color_cache_.clear();
 274 }
 275
 276
 277 void GuiApplication::registerSocketCallback(int fd, boost::function<void()> func)
 278 {
 279         socket_callbacks_[fd] =
 280                 boost::shared_ptr<socket_callback>(new socket_callback(fd, func));
 281 }
 282
 283
 284 void GuiApplication::unregisterSocketCallback(int fd)
 285 {
 286         socket_callbacks_.erase(fd);
 287 }
 288
 289 ////////////////////////////////////////////////////////////////////////
 290 // X11 specific stuff goes here...
 291 #ifdef Q_WS_X11
 292 bool GuiApplication::x11EventFilter(XEvent * xev)
 293 {
 294         if (!currentView())
 295                 return false;
 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"