def get_recognition_languages(cls) -> t.List[LocaleInfo]:
langs = []
for lng in pytesseract.get_languages():
try:
langs.append(LocaleInfo.from_three_letter_code(lng))
except ValueError:
continue
return langs
def populate_list(self, set_focus=True):
installed_languages = [(True, info) for info in sorted(
TesseractOcrEngine.get_recognition_languages(),
key=lambda l: l.english_name,
)]
if self.is_offline:
languages = installed_languages
else:
languages = []
added_locale_infos = set(l[1] for l in installed_languages)
for lang in self.online_languages:
loc_info = LocaleInfo.from_three_letter_code(lang)
if loc_info in added_locale_infos:
continue
else:
languages.append((False, loc_info))
added_locale_infos.add(loc_info)
column_defn = [
ColumnDefn(
# Translators: the title of a column in the Tesseract language list
_("Language"),
"left",
450,
lambda lang: lang[1].description,
),
ColumnDefn(
# Translators: the title of a column in the Tesseract language list
_("Installed"),
"center",
100,
lambda lang: _("Yes") if lang[0] else _("No"),
),
]
self.tesseractLanguageList.set_columns(column_defn)
if set_focus:
self.tesseractLanguageList.set_objects(languages, focus_item=0)
else:
self.tesseractLanguageList.set_objects(languages, set_focus=False)
# Maintain the state of the list
if not any(languages):
if not self.is_offline:
self.addBestButton.Enable(False)
self.addFastButton.Enable(False)
else:
self.removeButton.Enable(False)
self.btnPanel.Enable(False)