added user interface language option

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@2919 90c681e8-e032-0410-971d-27865f9a5e38

5 files changed, 80 insertions, 2 deletions

diff --git a/src/qmmp/qmmp.cpp b/src/qmmp/qmmp.cpp
index 05987b7f9..69127abad 100644
--- a/src/qmmp/qmmp.cpp
+++ b/src/qmmp/qmmp.cpp
@@ -31,6 +31,7 @@
 #include "qmmp.h"
 
 QString Qmmp::m_configFile;
+QString Qmmp::m_langID;
 
 const QString Qmmp::configFile()
 {
@@ -78,6 +79,15 @@ const QString Qmmp::pluginsPath()
 
 QString Qmmp::systemLanguageID()
 {
+    if(m_langID.isEmpty())
+    {
+        m_langID = uiLanguageID();
+        qDebug("Qmmp: ui language: %s", qPrintable(m_langID));
+    }
+
+    if(m_langID != "auto")
+        return m_langID;
+
 #ifdef Q_OS_UNIX
     QByteArray v = qgetenv ("LC_ALL");
     if (v.isEmpty())
@@ -89,3 +99,18 @@ QString Qmmp::systemLanguageID()
 #endif
     return  QLocale::system().name();
 }
+
+QString Qmmp::uiLanguageID()
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    QString langID = settings.value("General/locale", "auto").toString();
+    langID = langID.isEmpty() ? "auto" : langID;
+    return langID;
+}
+
+void Qmmp::setUiLanguageID(const QString &code)
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    settings.setValue("General/locale", code);
+    m_langID.clear();
+}
diff --git a/src/qmmp/qmmp.h b/src/qmmp/qmmp.h
index 7317417b2..4cd81fd94 100644
--- a/src/qmmp/qmmp.h
+++ b/src/qmmp/qmmp.h
@@ -102,12 +102,22 @@ public:
      */
     static const QString pluginsPath();
     /*!
-     * Returns system language
+     * Returns system language if uiLanguageID() is 'auto'. Otherwise returns uiLanguageID().
      */
     static QString systemLanguageID();
+    /*!
+     * Returns state of the user interface language option. Code "auto" means autodetection.
+     */
+    static QString uiLanguageID();
+    /*!
+     * Sets user interface language.
+     * @param code Language code; code "auto" means autodetection.
+     */
+    static void setUiLanguageID(const QString &code);
 
 private:
     static QString m_configFile;
+    static QString m_langID;
 
 };
 
diff --git a/src/qmmpui/configdialog.cpp b/src/qmmpui/configdialog.cpp
index 78b62e2cc..f97b9aa06 100644
--- a/src/qmmpui/configdialog.cpp
+++ b/src/qmmpui/configdialog.cpp
@@ -69,6 +69,7 @@ ConfigDialog::ConfigDialog (QWidget *parent) : QDialog (parent)
     m_ui->replayGainModeComboBox->addItem (tr("Disabled"), QmmpSettings::REPLAYGAIN_DISABLED);
     readSettings();
     loadPluginsInfo();
+    loadLanguages();
     createMenus();
     //setup icons
     m_ui->preferencesButton->setIcon(QIcon::fromTheme("configure"));
@@ -297,6 +298,43 @@ void ConfigDialog::createMenus()
     connect(menu, SIGNAL(triggered (QAction *)), SLOT(addTitleString(QAction *)));
 }
 
+void ConfigDialog::loadLanguages()
+{
+    QMap<QString, QString> l;
+    l["auto"] = tr("<Autodetect>");
+    l["pt_BR"] = tr("Brazilian Portuguese");
+    l["zh_CN"] = tr("Chinese Simplified");
+    l["zh_TW"] = tr("Chinese Traditional");
+    l["cs"] = tr("Czech");
+    l["nl"] = tr("Dutch");
+    l["en_US"] = tr("English");
+    l["fr"] = tr("French");
+    l["de"] = tr("German");
+    l["hu"] = tr("Hungarian");
+    l["it"] = tr("Italian");
+    l["ja"] = tr("Japanese");
+    l["kk"] = tr("Kazakh");
+    l["lt"] = tr("Lithuanian");
+    l["pl_PL"] = tr("Polish");
+    l["ru_RU"] = tr("Russian");
+    l["sk"] = tr("Slovak");
+    l["es"] = tr("Spanish");
+    l["tr"] = tr("Turkish");
+    l["uk_UA"] = tr("Ukrainian");
+
+    foreach(QString code, l.keys())
+    {
+        QString title = code != "auto" ? l.value(code) + " (" + code + ")" : l.value(code);
+        m_ui->langComboBox->addItem(title, code);
+    }
+
+    QString code = Qmmp::uiLanguageID();
+    int index = m_ui->langComboBox->findData(code);
+    if(index < 0)
+        index = m_ui->langComboBox->findData("auto");
+    m_ui->langComboBox->setCurrentIndex(index);
+}
+
 void ConfigDialog::addTitleString(QAction * a)
 {
     if (m_ui->formatLineEdit->cursorPosition () < 1)
@@ -351,6 +389,10 @@ void ConfigDialog::saveSettings()
     QSettings settings (Qmmp::configFile(), QSettings::IniFormat);
     settings.setValue("ConfigDialog/splitter_sizes", var_sizes);
     settings.setValue("ConfigDialog/window_size", size());
+    //User interface language
+    int index = m_ui->langComboBox->currentIndex();
+    if(index >= 0)
+        Qmmp::setUiLanguageID(m_ui->langComboBox->itemData(index).toString());
 }
 
 void ConfigDialog::on_treeWidget_itemChanged (QTreeWidgetItem *item, int column)
diff --git a/src/qmmpui/configdialog.h b/src/qmmpui/configdialog.h
index 163df66ad..b039c3529 100644
--- a/src/qmmpui/configdialog.h
+++ b/src/qmmpui/configdialog.h
@@ -72,6 +72,7 @@ private:
     void findSkins(const QString &path);
     void loadPluginsInfo();
     void createMenus();
+    void loadLanguages();
     int m_insert_row;
     Ui::ConfigDialog *m_ui;
 
diff --git a/src/qmmpui/forms/configdialog.ui b/src/qmmpui/forms/configdialog.ui
index 95183279a..14ecc4d49 100644
--- a/src/qmmpui/forms/configdialog.ui
+++ b/src/qmmpui/forms/configdialog.ui
@@ -724,7 +724,7 @@
           <property name="title">
            <string>Audio</string>
           </property>
-          <layout class="QGridLayout" name="gridLayout">
+          <layout class="QGridLayout" name="gridLayout3">
            <item row="0" column="0">
             <widget class="QLabel" name="label_20">
              <property name="text">