From 41b756776f8cb2ac5a90f5da444d7db3f5760286 Mon Sep 17 00:00:00 2001
From: Daniel Winzen <d@winzen4.de>
Date: Thu, 25 Dec 2014 20:54:18 +0100
Subject: [PATCH] Add choose language option

---
 include/SetupDialog.h   |  4 ++++
 src/core/main.cpp       | 11 ++++++++---
 src/gui/SetupDialog.cpp | 31 +++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/include/SetupDialog.h b/include/SetupDialog.h
index 96d865f40..a03829a6b 100644
--- a/include/SetupDialog.h
+++ b/include/SetupDialog.h
@@ -112,6 +112,8 @@ private slots:
 	void toggleDisplayWaveform( bool en );
 	void toggleDisableAutoquit( bool en );
 
+	void setLanguage( int lang );
+
 
 private:
 	TabBar * m_tabBar;
@@ -125,6 +127,8 @@ private:
 	bool m_displaydBV;
 	bool m_MMPZ;
 	bool m_hqAudioDev;
+	QString m_lang;
+	QStringList m_languages;
 
 
 	QLineEdit * m_wdLineEdit;
diff --git a/src/core/main.cpp b/src/core/main.cpp
index 08042ef89..12ed9da66 100644
--- a/src/core/main.cpp
+++ b/src/core/main.cpp
@@ -383,7 +383,14 @@ int main( int argc, char * * argv )
 	}
 
 
-	QString pos = QLocale::system().name().left( 2 );
+	ConfigManager::inst()->loadConfigFile();
+
+	// set language
+	QString pos = ConfigManager::inst()->value( "app", "language" );
+	if( pos.isEmpty() )
+	{
+		pos = QLocale::system().name().left( 2 );
+	}
 
 #ifdef LMMS_BUILD_WIN32
 #undef QT_TRANSLATIONS_DIR
@@ -414,8 +421,6 @@ int main( int argc, char * * argv )
 #endif
 #endif
 
-	ConfigManager::inst()->loadConfigFile();
-
 	if( render_out.isEmpty() )
 	{
 		// init style and palette
diff --git a/src/gui/SetupDialog.cpp b/src/gui/SetupDialog.cpp
index a29114f8b..bf79b3ab2 100644
--- a/src/gui/SetupDialog.cpp
+++ b/src/gui/SetupDialog.cpp
@@ -96,6 +96,8 @@ SetupDialog::SetupDialog( ConfigTabs _tab_to_open ) :
 	m_MMPZ( !ConfigManager::inst()->value( "app", "nommpz" ).toInt() ),
 	m_hqAudioDev( ConfigManager::inst()->value( "mixer",
 							"hqaudio" ).toInt() ),
+	m_lang( ConfigManager::inst()->value( "app",
+							"language" ) ),
 	m_workingDir( ConfigManager::inst()->workingDir() ),
 	m_vstDir( ConfigManager::inst()->vstDir() ),
 	m_artworkDir( ConfigManager::inst()->artworkDir() ),
@@ -302,10 +304,33 @@ SetupDialog::SetupDialog( ConfigTabs _tab_to_open ) :
 
 	misc_tw->setFixedHeight( YDelta*labelNumber + HeaderSize );
 
+	TabWidget * lang_tw = new TabWidget( tr( "LANGUAGE" ), general );
+	lang_tw->setFixedHeight( 48 );
+	QComboBox * changeLang = new QComboBox( lang_tw );
+	changeLang->move( XDelta, YDelta );
+
+	QDir dir( ConfigManager::inst()->localeDir() );
+	QStringList fileNames = dir.entryList( QStringList( "*.qm" ) );
+	for( int i = 0; i < fileNames.size(); ++i )
+	{
+		// get locale extracted by filename
+		fileNames[i].truncate( fileNames[i].lastIndexOf( '.' ) );
+		m_languages.append( fileNames[i] );
+		QString lang = QLocale( m_languages.last() ).nativeLanguageName();
+		changeLang->addItem( lang );
+		if( m_lang == m_languages.last() )
+		{
+			changeLang->setCurrentIndex( i );
+		}
+	}
+	connect( changeLang, SIGNAL( currentIndexChanged( int ) ),
+							this, SLOT( setLanguage( int ) ) );
 
 	gen_layout->addWidget( bufsize_tw );
 	gen_layout->addSpacing( 10 );
 	gen_layout->addWidget( misc_tw );
+	gen_layout->addSpacing( 10 );
+	gen_layout->addWidget( lang_tw );
 	gen_layout->addStretch();
 
 
@@ -826,6 +851,7 @@ void SetupDialog::accept()
 					QString::number( m_displayWaveform ) );
 	ConfigManager::inst()->setValue( "ui", "disableautoquit",
 					QString::number( m_disableAutoQuit ) );
+	ConfigManager::inst()->setValue( "app", "language", m_lang );
 
 
 	ConfigManager::inst()->setWorkingDir( m_workingDir );
@@ -1026,6 +1052,11 @@ void SetupDialog::toggleOneInstrumentTrackWindow( bool _enabled )
 	m_oneInstrumentTrackWindow = _enabled;
 }
 
+void SetupDialog::setLanguage( int lang )
+{
+	m_lang = m_languages[lang];
+}
+