C++ QCoreApplication::installTranslator方法代码示例

void loadTranslations( QCoreApplication &app, QTranslator &translator )
{
    const QString lang = QLocale::system().name();
    QString code;

    int index = lang.indexOf ( '_' );
    if ( lang == "C" ) {
        code = "en";
    }
    else if ( index != -1 ) {
        code = lang.left ( index );
    }
    else {
        index = lang.indexOf ( '@' );
        if ( index != -1 )
            code = lang.left ( index );
        else
            code = lang;
    }

    QString const i18nDir = "/usr/share/marble/translations";
    QString const relativeDir = app.applicationDirPath() + "/translations";
    foreach( const QString &path, QStringList() << i18nDir << relativeDir << QDir::currentPath() ) {
        foreach( const QString &lang, QStringList() << lang << code ) {
            QFileInfo translations = QFileInfo( path + "/routing-instructions_" + lang + ".qm" );
            if ( translations.exists() && translator.load( translations.absoluteFilePath() ) ) {
                app.installTranslator( &translator );
                return;
            }
        }
    }
}

void qtvplugin_geomarker::loadTranslations()
{
	//Trans
	QCoreApplication * app =  QCoreApplication::instance();
	if (app && m_nInstance==1)
	{
		QString strTransLocalFile =
				QCoreApplication::applicationDirPath()+"/" +
				m_SLLibName+ "_" +
				QLocale::system().name()+".qm";
		if (true==pluginTranslator.load(strTransLocalFile ))
		{
			QTVOSM_DEBUG("Load translationfile")<<"\n\t"<<strTransLocalFile<<" Succeeded.";
			app->installTranslator(&pluginTranslator);
			ui->retranslateUi(this);
		}
		else
			QTVOSM_WARNING("Load translationfile")<<"\n\t"<<strTransLocalFile<<" Not Found.";

	}
}

void setLanguage(QCoreApplication& qapplication, QWidget* parent)
{
	static int cntTranslators=0;
	
	if(cntTranslators>0){
		qapplication.removeTranslator(&translator);
		cntTranslators=0;
	}

	//translator stuff
	QDir d("/usr/share/fet/translations");
	
	bool translation_loaded=false;
	
	//this is one place (out of 2) in which you need to add a new language
	if(FET_LANGUAGE=="ar" || FET_LANGUAGE=="ca" || FET_LANGUAGE=="de" || FET_LANGUAGE=="es"
	 || FET_LANGUAGE=="el" || FET_LANGUAGE=="fr" || FET_LANGUAGE=="hu" || FET_LANGUAGE=="mk"
	 || FET_LANGUAGE=="ms" || FET_LANGUAGE=="nl" || FET_LANGUAGE=="pl" || FET_LANGUAGE=="ro"
	 || FET_LANGUAGE=="tr" || FET_LANGUAGE=="id" || FET_LANGUAGE=="it" || FET_LANGUAGE=="lt"
	 || FET_LANGUAGE=="ru" || FET_LANGUAGE=="fa" || FET_LANGUAGE=="uk" || FET_LANGUAGE=="pt_BR"
	 || FET_LANGUAGE=="da" || FET_LANGUAGE=="si" || FET_LANGUAGE=="sk" || FET_LANGUAGE=="he"
	 || FET_LANGUAGE=="sr" || FET_LANGUAGE=="gl" || FET_LANGUAGE=="vi" || FET_LANGUAGE=="uz"){

		translation_loaded=translator.load("fet_"+FET_LANGUAGE, qapplication.applicationDirPath());
		if(!translation_loaded){
			translation_loaded=translator.load("fet_"+FET_LANGUAGE, qapplication.applicationDirPath()+"/translations");
			if(!translation_loaded){
				if(d.exists()){
					translation_loaded=translator.load("fet_"+FET_LANGUAGE, "/usr/share/fet/translations");
				}
			}
		}
	}
	else{
		if(FET_LANGUAGE!="en_US"){
                    /*
			QMessageBox::warning(parent, QString("FET warning"),
			 QString("Specified language is incorrect - making it en_US (US English)"));
			FET_LANGUAGE="en_US";
                        */
		}
		
		assert(FET_LANGUAGE=="en_US");
		
		translation_loaded=true;
	}
	
	if(!translation_loaded){
            /*
		QMessageBox::warning(parent, QString("FET warning"),
		 QString("Translation for specified language not loaded - maybe the translation file is missing - setting the language to en_US (US English)")
		 +"\n\n"+
		 QString("FET searched for the translation file %1 in the directory %2, then in the directory %3 and "
		 "then in the directory %4 (under systems that support such a directory), but could not find it.")
		 .arg("fet_"+FET_LANGUAGE+".qm")
		 .arg(QDir::toNativeSeparators(qapplication.applicationDirPath()))
		 .arg(QDir::toNativeSeparators(qapplication.applicationDirPath()+"/translations"))
		 .arg("/usr/share/fet/translations")
		 );
		FET_LANGUAGE="en_US";
                */
	}
	
	if(FET_LANGUAGE=="ar" || FET_LANGUAGE=="he" || FET_LANGUAGE=="fa" || FET_LANGUAGE=="ur" /* and others? */){
		LANGUAGE_STYLE_RIGHT_TO_LEFT=true;
	}
	else{
		LANGUAGE_STYLE_RIGHT_TO_LEFT=false;
	}
	
	if(FET_LANGUAGE=="zh_CN"){
		LANGUAGE_FOR_HTML="zh-Hans";
	}
	else if(FET_LANGUAGE=="zh_TW"){
		LANGUAGE_FOR_HTML="zh-Hant";
	}
	else if(FET_LANGUAGE=="en_US"){
		LANGUAGE_FOR_HTML=FET_LANGUAGE.left(2);
	}
	else{
		LANGUAGE_FOR_HTML=FET_LANGUAGE;
		LANGUAGE_FOR_HTML.replace(QString("_"), QString("-"));
	}
	
	assert(cntTranslators==0);
	if(FET_LANGUAGE!="en_US"){
		qapplication.installTranslator(&translator);
		cntTranslators=1;
	}
	
        /*
	if(LANGUAGE_STYLE_RIGHT_TO_LEFT==true)
		qapplication.setLayoutDirection(Qt::RightToLeft);
                */
	
	//retranslate
        /*
	QList<QWidget*> tlwl=qapplication.topLevelWidgets();

	foreach(QWidget* wi, tlwl)
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
#ifdef WITH_IMAGEMAGICK
	Magick::InitializeMagick(*argv);
#endif

	QCoreApplication *a = (argc == 1) ? new QApplication(argc, argv) : new QCoreApplication(argc, argv);

	if(a)
	{
		/* we need nice getDataHome */
		#if defined(Q_OS_WIN32) || defined(Q_OS_WIN64)
		QCoreApplication::setApplicationName("luckygps");
		QCoreApplication::setOrganizationName(".");
		#endif

		QLocale locale = QLocale::system();
		QString locale_name = locale.name();
		QTranslator translator;

		/* Detect if luckyGPS is executed in "local mode" (no installation) */
		int local = 0;
		QDir dir(QCoreApplication::applicationDirPath());
		QFileInfoList fileList = dir.entryInfoList(QStringList("luckygps_*.qm"), QDir::AllEntries | QDir::NoDot | QDir::NoDotDot);
		if(fileList.length() > 0)
			local = 1;

#if defined(Q_OS_LINUX)
		translator.load(QString("luckygps_") + locale_name, "/usr/share/luckygps");
#else
		translator.load(QString("luckygps_") + locale_name, getDataHome(local));
#endif

		a->installTranslator(&translator);
		setlocale(LC_NUMERIC, "C");

		if(argc == 1)
		{
			MainWindow w(0, local);
			w.show();

			a->exec();
		}
#ifdef WITH_ROUTING
		else
		{
			/* check if 1 argument is given */
			if(argc > 3)
			{
				printf("\nUsage: luckygps FILE.osm.pbf [SETTINGS.spp]\n");
			}
			else
			{
				QString settingsFile;
				if(argc == 2)
					settingsFile = ":/data/motorcar.spp";
				else
					settingsFile = QString(argv[2]);

				/* import osm file into routing database */
				if(importOsmPbf(a, argv[1], settingsFile, local))
					qWarning() << "Import successfully.";
				else
					qWarning() << "Import failed.";
			}
		}
#endif

		delete a;
	}

	return true;
}