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