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/***************************************************************************
* Copyright (c) 2004 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#ifndef GUI_TRANSLATOR_H
#define GUI_TRANSLATOR_H
#include <QObject>
#include <list>
#include <map>
#include <memory>
#include <string>
#include <FCGlobal.h>
class QDir;
namespace Gui
{
using TStringList = std::list<std::string>;
using TStringMap = std::map<std::string, std::string>;
/**
* The Translator class uses Qt's QTranslator objects to change the language of the application
* on the fly.
* For more details see the \link i18n.html Internationalization with FreeCAD \endlink
* documentation.
*
* \author Werner Mayer
*/
class TranslatorP;
class GuiExport Translator: public QObject
{
Q_OBJECT
public:
class ParameterObserver;
static constexpr std::initializer_list<const char*> formattingOptions {
QT_TR_NOOP("Operating system"),
QT_TR_NOOP("Selected language"),
QT_TR_NOOP("C/POSIX")
};
/** @name singleton stuff */
//@{
/// Creates an instance
static Translator* instance();
/// Destroys the instance
static void destruct();
//@}
/** Activates the specified language \a lang if available. */
void activateLanguage(const char* lang);
/* Reloads the translators */
void refresh();
/** Returns the currently installed language. If no language is installed an empty string is
* returned. */
std::string activeLanguage() const;
/** Returns the locale (e.g. "de") to the given language name. */
std::string locale(const std::string&) const;
/** Sets default Qt locale based on given language name **/
void setLocale(const std::string& = "") const;
/** Returns a list of supported languages. */
TStringList supportedLanguages() const;
/** Returns a map of supported languages/locales. */
TStringMap supportedLocales() const;
/** Adds a path where localization files can be found */
void addPath(const QString& path);
/** eventFilter used to convert decimal separator **/
bool eventFilter(QObject* obj, QEvent* ev) override;
/** Enables/disables decimal separator conversion **/
void enableDecimalPointConversion(bool on);
/** Returns whether decimal separator conversion is enabled */
bool isEnabledDecimalPointConversion() const;
private:
Translator();
~Translator() override;
void removeTranslators();
QStringList directories() const;
void installQMFiles(const QDir& dir, const char* locale);
void updateLocaleChange() const;
private:
std::unique_ptr<ParameterObserver> observer;
static Translator* _pcSingleton;
TranslatorP* d;
std::unique_ptr<Translator, std::function<void(Translator*)>> decimalPointConverter;
};
} // namespace Gui
#endif // GUI_TRANSLATOR_H
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