refactor: settings & language

ui/extends/shared/language.py

@@ -0,0 +1,66 @@
+from PySide6.QtCore import QEvent, QLibraryInfo, QLocale, QObject, QTranslator
+from PySide6.QtWidgets import QApplication
+
+INSTALLED_TRANSLATORS = []
+
+
+def changeAppLanguage(
+    locale: QLocale,
+    fallbackLocale: QLocale = QLocale("en_US"),
+):
+    app = QApplication.instance()
+
+    for translator in INSTALLED_TRANSLATORS:
+        app.removeTranslator(translator)
+
+    translator = QTranslator()
+    translatorLoadSuccess = translator.load(locale, "", "", ":/lang/")
+    if not translatorLoadSuccess:
+        translator.load(fallbackLocale, "", "", ":/lang/")
+    qtTranslator = QTranslator()
+    qtTranslatorLoadSuccess = qtTranslator.load(
+        locale,
+        "qt",
+        "_",
+        QLibraryInfo.path(QLibraryInfo.LibraryPath.TranslationsPath),
+    )
+    if not qtTranslatorLoadSuccess:
+        qtTranslator.load(
+            fallbackLocale,
+            "qt",
+            "_",
+            QLibraryInfo.path(QLibraryInfo.LibraryPath.TranslationsPath),
+        )
+
+    app.installTranslator(translator)
+    INSTALLED_TRANSLATORS.append(translator)
+    app.installTranslator(qtTranslator)
+    INSTALLED_TRANSLATORS.append(qtTranslator)
+
+
+def localeToCode(locale: QLocale):
+    code = QLocale.languageToCode(locale.language())
+    country = locale.country()
+    if country and country != QLocale.Country.AnyCountry:
+        code += f"_{QLocale.countryToCode(country)}"
+    return code
+
+
+def localeToFullName(locale: QLocale):
+    ret = QLocale.languageToString(locale.language())
+    country = locale.country()
+    if country and country != QLocale.Country.AnyCountry:
+        ret += f" ({QLocale.countryToString(country)})"
+    return ret
+
+
+class LanguageChangeEventFilter(QObject):
+    def eventFilter(self, watched: QObject, event: QEvent) -> bool:
+        if (
+            event.type() == QEvent.Type.LanguageChange
+            and hasattr(watched, "retranslateUi")
+            and callable(watched.retranslateUi)
+        ):
+            watched.retranslateUi(watched)
+
+        return super().eventFilter(watched, event)

ui/extends/shared/settings.py

@@ -1,5 +1,6 @@
 import sys
-from PySide6.QtCore import QSettings, QFileInfo
+
+from PySide6.QtCore import QFileInfo, QSettings
 
 __all__ = [
     "DATABASE_URL",
@@ -8,11 +9,14 @@ __all__ = [
     "TESSERACT_FILE",
     "KNN_MODEL_FILE",
     "SIFT_DATABASE_FILE",
+    "ANDREAL_FOLDER",
+    "ANDREAL_EXECUTABLE",
     "Settings",
 ]
 
 # a key without slashes will appear in the "General" section
 # see https://doc.qt.io/qt-6/qsettings.html#Format-enum for details
+LANGUAGE = "Language"
 DATABASE_URL = "DatabaseUrl"
 
 DEVICES_JSON_FILE = "Ocr/DevicesJsonFile"
@@ -21,7 +25,7 @@ TESSERACT_FILE = "Ocr/TesseractFile"
 KNN_MODEL_FILE = "Ocr/KnnModelFile"
 SIFT_DATABASE_FILE = "Ocr/SiftDatabaseFile"
 
-ANDREAL_PATH = "Andreal/AndrealFolderPath"
+ANDREAL_FOLDER = "Andreal/AndrealFolder"
 ANDREAL_EXECUTABLE = "Andreal/AndrealExecutable"
 
 
@@ -44,6 +48,12 @@ class Settings(QSettings):
         self.setValue(key, None)
         self.sync()
 
+    def language(self):
+        return self._strItem(LANGUAGE)
+
+    def setLanguage(self, value: str):
+        self._setStrItem(LANGUAGE, value)
+
     def databaseUrl(self):
         return self._strItem(DATABASE_URL)
 
@@ -94,3 +104,21 @@ class Settings(QSettings):
 
     def resetSiftDatabaseFile(self):
         self._resetStrItem(SIFT_DATABASE_FILE)
+
+    def andrealFolder(self):
+        return self._strItem(ANDREAL_FOLDER)
+
+    def setAndrealFolder(self, value: str):
+        self._setStrItem(ANDREAL_FOLDER, value)
+
+    def resetAndrealFolder(self):
+        self._resetStrItem(ANDREAL_FOLDER)
+
+    def andrealExecutable(self):
+        return self._strItem(ANDREAL_EXECUTABLE)
+
+    def setAndrealExecutable(self, value: str):
+        self._setStrItem(ANDREAL_EXECUTABLE, value)
+
+    def resetAndrealExecutable(self):
+        self._resetStrItem(ANDREAL_EXECUTABLE)