Qt 5.11 | Qt Widgets | Validators Example | localeselector.cpp Example File

Qt 5.11.3 Reference Documentation

# localeselector.cpp Example File

widgets/validators/localeselector.cpp

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      #include "localeselector.h"

      #include <QLocale>

      LocaleSelector::LocaleSelector(QWidget *parent)
          : QComboBox(parent)
      {
          int curIndex = -1;
          int index = 0;
          for (int _lang = QLocale::C; _lang <= QLocale::LastLanguage; ++_lang) {
              QLocale::Language lang = static_cast<QLocale::Language>(_lang);
              foreach (const QLocale &l, QLocale::matchingLocales(lang, QLocale::AnyScript, QLocale::AnyCountry)) {
                  QString label = QLocale::languageToString(l.language());
                  label += QLatin1Char('/');
                  label += QLocale::countryToString(l.country());
                  // distinguish locales by script, if there are more than one script for a language/country pair
                  if (QLocale::matchingLocales(l.language(), QLocale::AnyScript, l.country()).size() > 1)
                      label += QLatin1String(" (") + QLocale::scriptToString(l.script()) + QLatin1Char(')');

                  addItem(label, QVariant::fromValue(l));

                  if (l.language() == locale().language() && l.country() == locale().country()
                      && (locale().script() == QLocale::AnyScript || l.script() == locale().script())) {
                      curIndex = index;
                  }
                  ++index;
              }
          }
          if (curIndex != -1)
              setCurrentIndex(curIndex);

          connect(this, SIGNAL(activated(int)), this, SLOT(emitLocaleSelected(int)));
      }

      void LocaleSelector::emitLocaleSelected(int index)
      {
          QVariant v = itemData(index);
          if (!v.isValid())
              return;
          const QLocale l = v.value<QLocale>();
          emit localeSelected(l);
      }