lyx_mirror/src/frontends/qt4/GuiApplication.cpp
André Pönitz 50de85396c some remnaming
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@20298 a592a061-630c-0410-9148-cb99ea01b6c8
2007-09-15 20:31:50 +00:00

419 lines
9.2 KiB
C++

/**
* \file GuiApplication.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author unknown
* \author John Levon
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "GuiApplication.h"
#include "qt_helpers.h"
#include "GuiImage.h"
#include "frontends/LyXView.h"
#include "graphics/LoaderQueue.h"
#include "support/FileName.h"
#include "support/lstrings.h"
#include "support/os.h"
#include "support/Package.h"
#include "BufferList.h"
#include "BufferView.h"
#include "Color.h"
#include "debug.h"
#include "FuncRequest.h"
#include "gettext.h"
#include "LyX.h"
#include "LyXFunc.h"
#include "LyXRC.h"
#include <QApplication>
#include <QClipboard>
#include <QEventLoop>
#include <QFileOpenEvent>
#include <QLocale>
#include <QLibraryInfo>
#include <QPixmapCache>
#include <QSessionManager>
#include <QSocketNotifier>
#include <QTextCodec>
#include <QTimer>
#include <QTranslator>
#include <QWidget>
#ifdef Q_WS_X11
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#endif
#include <boost/bind.hpp>
#include <exception>
using std::string;
using std::endl;
namespace lyx {
frontend::Application * createApplication(int & argc, char * argv[])
{
return new frontend::GuiApplication(argc, argv);
}
namespace frontend {
class SocketNotifier : public QSocketNotifier
{
public:
/// connect a connection notification from the LyXServerSocket
SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
: QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
{}
public:
/// The callback function
Application::SocketCallback func_;
};
////////////////////////////////////////////////////////////////////////
// Mac specific stuff goes here...
class MenuTranslator : public QTranslator
{
public:
MenuTranslator(QObject * parent)
: QTranslator(parent)
{}
QString translate(const char * /*context*/,
const char * sourceText,
const char * /*comment*/ = 0)
{
string const s = sourceText;
if (s == N_("About %1") || s == N_("Preferences")
|| s == N_("Reconfigure") || s == N_("Quit %1"))
return qt_(s);
else
return QString();
}
};
///////////////////////////////////////////////////////////////
// You can find more platform specific stuff
// at the end of this file...
///////////////////////////////////////////////////////////////
using support::FileName;
GuiApplication * guiApp;
GuiApplication::GuiApplication(int & argc, char ** argv)
: QApplication(argc, argv), Application(argc, argv)
{
// Qt bug? setQuitOnLastWindowClosed(true); does not work
setQuitOnLastWindowClosed(false);
#ifdef Q_WS_X11
// doubleClickInterval() is 400 ms on X11 which is just too long.
// On Windows and Mac OS X, the operating system's value is used.
// On Microsoft Windows, calling this function sets the double
// click interval for all applications. So we don't!
QApplication::setDoubleClickInterval(300);
#endif
// install translation file for Qt built-in dialogs
QString language_name = QString("qt_") + QLocale::system().name();
// language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
// Short-named translator can be loaded from a long name, but not the
// opposite. Therefore, long name should be used without truncation.
// c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
if (qt_trans_.load(language_name,
QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
{
installTranslator(&qt_trans_);
// even if the language calls for RtL, don't do that
setLayoutDirection(Qt::LeftToRight);
LYXERR(Debug::GUI)
<< "Successfully installed Qt translations for locale "
<< fromqstr(language_name) << std::endl;
} else
LYXERR(Debug::GUI)
<< "Could not find Qt translations for locale "
<< fromqstr(language_name) << std::endl;
#ifdef Q_WS_MACX
// This allows to translate the strings that appear in the LyX menu.
addMenuTranslator();
#endif
using namespace lyx::graphics;
Image::newImage = boost::bind(&GuiImage::newImage);
Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
// needs to be done before reading lyxrc
QWidget w;
lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
LoaderQueue::setPriority(10,100);
guiApp = this;
// Set the cache to 5120 kilobytes which corresponds to screen size of
// 1280 by 1024 pixels with a color depth of 32 bits.
QPixmapCache::setCacheLimit(5120);
}
GuiApplication::~GuiApplication()
{
socket_notifiers_.clear();
}
Clipboard & GuiApplication::clipboard()
{
return clipboard_;
}
Selection & GuiApplication::selection()
{
return selection_;
}
int GuiApplication::exec()
{
QTimer::singleShot(1, this, SLOT(execBatchCommands()));
return QApplication::exec();
}
void GuiApplication::exit(int status)
{
QApplication::exit(status);
}
void GuiApplication::execBatchCommands()
{
LyX::ref().execBatchCommands();
}
string const GuiApplication::romanFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::Serif);
font.setFamily("serif");
return fromqstr(QFontInfo(font).family());
}
string const GuiApplication::sansFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::SansSerif);
font.setFamily("sans");
return fromqstr(QFontInfo(font).family());
}
string const GuiApplication::typewriterFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::TypeWriter);
font.setFamily("monospace");
return fromqstr(QFontInfo(font).family());
}
bool GuiApplication::event(QEvent * e)
{
switch(e->type()) {
case QEvent::FileOpen: {
// Open a file; this happens only on Mac OS X for now
QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
if (!currentView() || !currentView()->view())
// The application is not properly initialized yet.
// So we acknowledge the event and delay the file opening
// until LyX is ready.
// FIXME UNICODE: FileName accept an utf8 encoded string.
LyX::ref().addFileToLoad(FileName(fromqstr(foe->file())));
else
lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
qstring_to_ucs4(foe->file())));
e->accept();
return true;
}
default:
return QApplication::event(e);
}
}
bool GuiApplication::notify(QObject * receiver, QEvent * event)
{
bool return_value;
try {
return_value = QApplication::notify(receiver, event);
}
catch (std::exception const & e) {
lyxerr << "Caught \"normal\" exception: " << e.what() << endl;
LyX::cref().emergencyCleanup();
abort();
}
catch (...) {
lyxerr << "Caught some really weird exception..." << endl;
LyX::cref().emergencyCleanup();
abort();
}
return return_value;
}
void GuiApplication::syncEvents()
{
// This is the ONLY place where processEvents may be called.
// During screen update/ redraw, this method is disabled to
// prevent keyboard events being handed to the LyX core, where
// they could cause re-entrant calls to screen update.
processEvents(QEventLoop::ExcludeUserInputEvents);
}
bool GuiApplication::getRgbColor(Color_color col,
RGBColor & rgbcol)
{
QColor const & qcol = color_cache_.get(col);
if (!qcol.isValid()) {
rgbcol.r = 0;
rgbcol.g = 0;
rgbcol.b = 0;
return false;
}
rgbcol.r = qcol.red();
rgbcol.g = qcol.green();
rgbcol.b = qcol.blue();
return true;
}
string const GuiApplication::hexName(Color_color col)
{
return support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
}
void GuiApplication::updateColor(Color_color)
{
// FIXME: Bleh, can't we just clear them all at once ?
color_cache_.clear();
}
void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
{
SocketNotifier * sn = new SocketNotifier(this, fd, func);
socket_notifiers_[fd] = sn;
connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
}
void GuiApplication::socketDataReceived(int fd)
{
socket_notifiers_[fd]->func_();
}
void GuiApplication::unregisterSocketCallback(int fd)
{
socket_notifiers_.erase(fd);
}
void GuiApplication::commitData(QSessionManager & sm)
{
/// The implementation is required to avoid an application exit
/// when session state save is triggered by session manager.
/// The default implementation sends a close event to all
/// visible top level widgets when session managment allows
/// interaction.
/// We are changing that to write all unsaved buffers...
if (sm.allowsInteraction() && !theBufferList().quitWriteAll())
sm.cancel();
}
////////////////////////////////////////////////////////////////////////
// X11 specific stuff goes here...
#ifdef Q_WS_X11
bool GuiApplication::x11EventFilter(XEvent * xev)
{
if (!currentView())
return false;
switch (xev->type) {
case SelectionRequest: {
if (xev->xselectionrequest.selection != XA_PRIMARY)
break;
LYXERR(Debug::GUI) << "X requested selection." << endl;
BufferView * bv = currentView()->view();
if (bv) {
docstring const sel = bv->requestSelection();
if (!sel.empty())
selection_.put(sel);
}
break;
}
case SelectionClear: {
if (xev->xselectionclear.selection != XA_PRIMARY)
break;
LYXERR(Debug::GUI) << "Lost selection." << endl;
BufferView * bv = currentView()->view();
if (bv)
bv->clearSelection();
break;
}
}
return false;
}
#endif
void GuiApplication::addMenuTranslator()
{
installTranslator(new MenuTranslator(this));
}
} // namespace frontend
} // namespace lyx
#include "GuiApplication_moc.cpp"