lyx_mirror/src/frontends/qt4/GuiApplication.cpp

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/**
* \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 "GuiView.h"
#include "frontends/alert.h"
#include "frontends/Application.h"
#include "frontends/FontLoader.h"
#include "frontends/FontMetrics.h"
#include "Buffer.h"
#include "BufferList.h"
#include "BufferView.h"
#include "Font.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "LyX.h"
#include "LyXFunc.h"
#include "LyXRC.h"
#include "Session.h"
#include "version.h"
#include "support/debug.h"
#include "support/ExceptionMessage.h"
#include "support/FileName.h"
#include "support/ForkedCalls.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/os.h"
#include "support/Package.h"
#include <QApplication>
#include <QClipboard>
#include <QEventLoop>
#include <QFileOpenEvent>
#include <QLocale>
#include <QLibraryInfo>
#include <QMenuBar>
#include <QPixmapCache>
#include <QRegExp>
#include <QSessionManager>
#include <QSocketNotifier>
#include <QTextCodec>
#include <QTimer>
#include <QTranslator>
#include <QWidget>
#ifdef Q_WS_X11
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#undef CursorShape
#undef None
#endif
#include <boost/bind.hpp>
#include <exception>
using namespace std;
using namespace lyx::support;
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...
///////////////////////////////////////////////////////////////
GuiApplication * guiApp;
GuiApplication::GuiApplication(int & argc, char ** argv)
: QApplication(argc, argv), Application(), current_view_(0)
{
QString app_name = "LyX";
QCoreApplication::setOrganizationName(app_name);
QCoreApplication::setOrganizationDomain("lyx.org");
QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
//FIXME: quitOnLastWindowClosed is true by default, at least on Windows and
// X11 platforms. We should have a lyxrc setting for this in order to let the
// application stay resident.
/*
if (lyxrc.quit_on_last_window_closed)
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));
} else
LYXERR(Debug::GUI, "Could not find Qt translations for locale "
<< fromqstr(language_name));
#ifdef Q_WS_MACX
// all windows in a Mac application share the same menu bar.
QMenuBar *menuBar = new QMenuBar(0);
// 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;
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);
// Initialize RC Fonts
if (lyxrc.roman_font_name.empty())
lyxrc.roman_font_name = fromqstr(romanFontName());
if (lyxrc.sans_font_name.empty())
lyxrc.sans_font_name = fromqstr(sansFontName());
if (lyxrc.typewriter_font_name.empty())
lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
general_timer_.setInterval(500);
connect(&general_timer_, SIGNAL(timeout()),
this, SLOT(handleRegularEvents()));
general_timer_.start();
}
GuiApplication::~GuiApplication()
{
socket_notifiers_.clear();
}
FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
{
FuncStatus flag;
bool enable = true;
switch(cmd.action) {
case LFUN_WINDOW_CLOSE:
enable = view_ids_.size() > 0;
break;
default:
if (!current_view_) {
enable = false;
break;
}
}
if (!enable)
flag.enabled(false);
return flag;
}
bool GuiApplication::dispatch(FuncRequest const & cmd)
{
switch(cmd.action) {
case LFUN_WINDOW_NEW:
createView(toqstr(cmd.argument()));
break;
case LFUN_WINDOW_CLOSE:
// update bookmark pit of the current buffer before window close
for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
theLyXFunc().gotoBookmark(i+1, false, false);
current_view_->close();
break;
case LFUN_LYX_QUIT:
// quitting is triggered by the gui code
// (leaving the event loop).
current_view_->message(from_utf8(N_("Exiting.")));
if (closeAllViews())
quit();
break;
case LFUN_SCREEN_FONT_UPDATE: {
// handle the screen font changes.
font_loader_.update();
// Backup current_view_
GuiView * view = current_view_;
// Set current_view_ to zero to forbid GuiWorkArea::redraw()
// to skip the refresh.
current_view_ = 0;
BufferList::iterator it = theBufferList().begin();
BufferList::iterator const end = theBufferList().end();
for (; it != end; ++it)
(*it)->changed();
// Restore current_view_
current_view_ = view;
break;
}
default:
// Notify the caller that the action has not been dispatched.
return false;
}
// The action has been dispatched.
return true;
}
void GuiApplication::resetGui()
{
map<int, GuiView *>::iterator it;
for (it = views_.begin(); it != views_.end(); ++it)
it->second->resetDialogs();
dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
}
static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
{
ids.clear();
map<int, GuiView *>::const_iterator it;
for (it = stdmap.begin(); it != stdmap.end(); ++it)
ids.push_back(it->first);
}
void GuiApplication::createView(QString const & geometry_arg)
{
updateIds(views_, view_ids_);
int id = 0;
while (views_.find(id) != views_.end())
id++;
views_[id] = new GuiView(id);
updateIds(views_, view_ids_);
GuiView * view = views_[id];
theLyXFunc().setLyXView(view);
view->show();
if (!geometry_arg.isEmpty()) {
#ifdef Q_WS_WIN
int x, y;
int w, h;
QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
re.indexIn(geometry_arg);
w = re.cap(1).toInt();
h = re.cap(2).toInt();
x = re.cap(3).toInt();
y = re.cap(4).toInt();
view->setGeometry(x, y, w, h);
#endif
}
view->setFocus();
setCurrentView(*view);
}
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();
}
void GuiApplication::restoreGuiSession()
{
if (!lyxrc.load_session)
return;
Session & session = LyX::ref().session();
vector<FileName> const & lastopened = session.lastOpened().getfiles();
// do not add to the lastfile list since these files are restored from
// last session, and should be already there (regular files), or should
// not be added at all (help files).
for_each(lastopened.begin(), lastopened.end(),
bind(&GuiView::loadDocument, current_view_, _1, false));
// clear this list to save a few bytes of RAM
session.lastOpened().clear();
}
QString const GuiApplication::romanFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::Serif);
font.setFamily("serif");
return QFontInfo(font).family();
}
QString const GuiApplication::sansFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::SansSerif);
font.setFamily("sans");
return QFontInfo(font).family();
}
QString const GuiApplication::typewriterFontName()
{
QFont font;
font.setKerning(false);
font.setStyleHint(QFont::TypeWriter);
font.setFamily("monospace");
return QFontInfo(font).family();
}
void GuiApplication::handleRegularEvents()
{
ForkedCallsController::handleCompletedProcesses();
}
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 (!current_view_ || !current_view_->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(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)
{
try {
return QApplication::notify(receiver, event);
}
catch (ExceptionMessage const & e) {
switch(e.type_) {
case ErrorException:
LyX::cref().emergencyCleanup();
setQuitOnLastWindowClosed(false);
closeAllViews();
Alert::error(e.title_, e.details_);
#ifndef NDEBUG
// Properly crash in debug mode in order to get a useful backtrace.
abort();
#endif
// In release mode, try to exit gracefully.
this->exit(1);
case BufferException: {
Buffer * buf = current_view_->buffer();
docstring details = e.details_ + '\n';
details += theBufferList().emergencyWrite(buf);
theBufferList().release(buf);
details += _("\nThe current document was closed.");
Alert::error(e.title_, details);
return false;
}
case WarningException:
Alert::warning(e.title_, e.details_);
return false;
};
}
catch (exception const & e) {
docstring s = _("LyX has caught an exception, it will now "
"attempt to save all unsaved documents and exit."
"\n\nException: ");
s += from_ascii(e.what());
Alert::error(_("Software exception Detected"), s);
LyX::cref().exit(1);
}
catch (...) {
docstring s = _("LyX has caught some really weird exception, it will "
"now attempt to save all unsaved documents and exit.");
Alert::error(_("Software exception Detected"), s);
LyX::cref().exit(1);
}
return false;
}
bool GuiApplication::getRgbColor(ColorCode 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(ColorCode col)
{
return ltrim(fromqstr(color_cache_.get(col).name()), "#");
}
void GuiApplication::updateColor(ColorCode)
{
// 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 close all wiew one by one.
/// FIXME: verify if the default implementation is enough now.
if (sm.allowsInteraction() && !closeAllViews())
sm.cancel();
}
void GuiApplication::addMenuTranslator()
{
installTranslator(new MenuTranslator(this));
}
bool GuiApplication::unregisterView(int id)
{
updateIds(views_, view_ids_);
BOOST_ASSERT(views_.find(id) != views_.end());
BOOST_ASSERT(views_[id]);
map<int, GuiView *>::iterator it;
for (it = views_.begin(); it != views_.end(); ++it) {
if (it->first == id) {
views_.erase(id);
break;
}
}
updateIds(views_, view_ids_);
return true;
}
bool GuiApplication::closeAllViews()
{
updateIds(views_, view_ids_);
if (views_.empty())
return true;
map<int, GuiView*> const cmap = views_;
map<int, GuiView*>::const_iterator it;
for (it = cmap.begin(); it != cmap.end(); ++it) {
if (!it->second->close())
return false;
}
views_.clear();
view_ids_.clear();
return true;
}
GuiView & GuiApplication::view(int id) const
{
BOOST_ASSERT(views_.find(id) != views_.end());
return *views_.find(id)->second;
}
void GuiApplication::hideDialogs(string const & name, Inset * inset) const
{
vector<int>::const_iterator it = view_ids_.begin();
vector<int>::const_iterator const end = view_ids_.end();
for (; it != end; ++it)
view(*it).hideDialog(name, inset);
}
Buffer const * GuiApplication::updateInset(Inset const * inset) const
{
Buffer const * buffer_ = 0;
vector<int>::const_iterator it = view_ids_.begin();
vector<int>::const_iterator const end = view_ids_.end();
for (; it != end; ++it) {
Buffer const * ptr = view(*it).updateInset(inset);
if (ptr)
buffer_ = ptr;
}
return buffer_;
}
void GuiApplication::readMenus(Lexer & lex)
{
menuBackend().read(lex);
}
bool GuiApplication::searchMenu(FuncRequest const & func,
vector<docstring> & names) const
{
return menuBackend().getMenubar().searchMenu(func, names);
}
////////////////////////////////////////////////////////////////////////
// X11 specific stuff goes here...
#ifdef Q_WS_X11
bool GuiApplication::x11EventFilter(XEvent * xev)
{
if (!current_view_)
return false;
switch (xev->type) {
case SelectionRequest: {
if (xev->xselectionrequest.selection != XA_PRIMARY)
break;
LYXERR(Debug::GUI, "X requested selection.");
BufferView * bv = current_view_->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.");
BufferView * bv = current_view_->view();
if (bv)
bv->clearSelection();
break;
}
}
return false;
}
#endif
} // namespace frontend
////////////////////////////////////////////////////////////////////
//
// Font stuff
//
////////////////////////////////////////////////////////////////////
frontend::FontLoader & theFontLoader()
{
BOOST_ASSERT(frontend::guiApp);
return frontend::guiApp->fontLoader();
}
frontend::FontMetrics const & theFontMetrics(Font const & f)
{
return theFontMetrics(f.fontInfo());
}
frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
{
BOOST_ASSERT(frontend::guiApp);
return frontend::guiApp->fontLoader().metrics(f);
}
frontend::Clipboard & theClipboard()
{
BOOST_ASSERT(frontend::guiApp);
return frontend::guiApp->clipboard();
}
frontend::Selection & theSelection()
{
BOOST_ASSERT(frontend::guiApp);
return frontend::guiApp->selection();
}
} // namespace lyx
#include "GuiApplication_moc.cpp"