From b16ae3a9ee87291e53cff469d4bb8c7bcb52a8c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Du=C5=A1an=20Poizl?= <nou.spiro@gmail.com>
Date: Mon, 20 Oct 2025 21:29:59 +0200
Subject: [PATCH] Add language setting

---
 libXISF                |  2 +-
 src/main.cpp           | 16 ++++++++++++++--
 src/settingsdialog.cpp | 30 +++++++++++++++++++++++++++++-
 src/settingsdialog.h   |  1 +
 4 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/libXISF b/libXISF
index 556bb22..2e74d94 160000
--- a/libXISF
+++ b/libXISF
@@ -1 +1 @@
-Subproject commit 556bb22d2675ee6072c6224fef3da0fb5d93db41
+Subproject commit 2e74d94641acef44f1ce9d374c96114838bf8ae4
diff --git a/src/main.cpp b/src/main.cpp
index 285ce33..af42213 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,6 +3,7 @@
 #include <QSurfaceFormat>
 #include <QTranslator>
 #include <QCommandLineParser>
+#include <QSettings>
 #include <stdlib.h>
 #include "../thumbnailer/genthumbnail.h"
 
@@ -76,8 +77,19 @@ int main(int argc, char *argv[])
 
     QTranslator translator;
     QTranslator translator2;
-    if(translator.load(QLocale(), "tenmon", "_", ":/translations"))
-        a.installTranslator(&translator);
+    QSettings settings;
+    QString lang = settings.value("settings/lang").toString();
+    if(lang.isEmpty())
+    {
+        if(translator.load(QLocale(), "tenmon", "_", ":/translations"))
+            a.installTranslator(&translator);
+    }
+    else
+    {
+        if(translator.load("tenmon_" + lang, ":/translations"))
+            a.installTranslator(&translator);
+    }
+
     if(translator2.load(QLocale(), "tenmon", "_", a.applicationDirPath()))
         a.installTranslator(&translator2);
 
diff --git a/src/settingsdialog.cpp b/src/settingsdialog.cpp
index 89c1efd..ea31c85 100644
--- a/src/settingsdialog.cpp
+++ b/src/settingsdialog.cpp
@@ -129,11 +129,30 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent)
             delete item;
     });
 
+    m_lang = new QComboBox(this);
+    m_lang->addItems({"English", "Français", "Slovenčina", "Português"});
+    QString lang;
+    switch(QLocale().language())
+    {
+    default:
+    case QLocale::English: lang = "en"; break;
+    case QLocale::French: lang = "fr"; break;
+    case QLocale::Slovak: lang = "sk"; break;
+    case QLocale::Portuguese: lang = "pt_BR"; break;
+    }
+
+    lang = settings.value("settings/lang", lang).toString();
+    if(lang == "en")m_lang->setCurrentIndex(0);
+    else if(lang == "fr")m_lang->setCurrentIndex(1);
+    else if(lang == "sk")m_lang->setCurrentIndex(2);
+    else if(lang == "pt_BR")m_lang->setCurrentIndex(3);
+
     layout->addRow(tr("Image preload count"), m_preloadImages);
     layout->addRow(tr("Thumbnails size"), m_thumSize);
     layout->addRow(tr("Saturation"), m_saturation);
     layout->addRow(tr("Slideshow interval"), m_slideShowTime);
     layout->addRow(tr("Image interpolation"), m_filtering);
+    layout->addRow(tr("Language"), m_lang);
     layout->addRow(m_qualityThumbnail);
     layout->addRow(m_useNativeDialog);
     layout->addRow(m_bestFit);
@@ -150,7 +169,6 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent)
 #endif
     //layout->addRow(new QLabel(tr("Changes in settings will take effect after program restart.")));
 
-
     QDialogButtonBox *buttonBox = new QDialogButtonBox(this);
     buttonBox->setStandardButtons(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
     connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
@@ -237,4 +255,14 @@ void SettingsDialog::saveSettings()
     }
     settings.setValue("settings/headerhighlightkeywords", headerHighlight.keys());
     settings.setValue("settings/headerhighlightcolors", colors);
+    QString lang;
+    int langIdx = m_lang->currentIndex();
+    switch(langIdx)
+    {
+    case 0: lang = "en"; break;
+    case 1: lang = "fr"; break;
+    case 2: lang = "sk"; break;
+    case 3: lang = "pt_BR"; break;
+    }
+    settings.setValue("settings/lang", lang);
 }
diff --git a/src/settingsdialog.h b/src/settingsdialog.h
index dd7aeaa..23acc4f 100644
--- a/src/settingsdialog.h
+++ b/src/settingsdialog.h
@@ -32,6 +32,7 @@ private:
     QListWidget *m_headerHighlight;
     QColor m_color = Qt::yellow;
     QLineEdit *m_keyword;
+    QComboBox *m_lang;
 };
 
 #endif // SETTINGSDIALOG_H