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annotate src/gui/locale.cc @ 294:99cbc51433e4

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*: cleanup uses of QPalette I didn't know about setBackgroundRole() which is very useful in 99% of the cases where I even needed to edit the palette
author Paper <paper@paper.us.eu.org>
date Sun, 12 May 2024 18:16:08 -0400
parents 862d0d8619f6
children b82841e76e79
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1 #include "gui/locale.h"
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2 #include "core/strings.h"
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4 #include <QApplication>
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5 #include <QDir>
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6 #include <QLocale>
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7 #include <QString>
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8 #include <QTranslator>
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9
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10 #include <QDebug>
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12 #include <iostream>
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13
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14 namespace Locale {
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15
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16 std::string GetLocaleFullName(const QLocale& locale) {
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17 QString res = QLocale::languageToString(locale.language());
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18 if (locale.country() != QLocale::AnyCountry)
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19 res += " (" + QLocale::countryToString(locale.country()) + ")";
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20 return Strings::ToUtf8String(res);
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21 }
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22
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23 Locale::Locale() {
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24 RefreshAvailableLocales();
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25 SetActiveLocale(QLocale("en_US"));
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26 }
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27
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28 Locale::Locale(const std::string& name) {
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29 RefreshAvailableLocales();
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30 SetActiveLocale(QLocale(Strings::ToQString(name)));
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31 }
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32
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33 QLocale Locale::GetLocale() const {
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34 return _locale;
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35 }
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36
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37 std::vector<QLocale> Locale::GetAvailableLocales() const {
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38 return _available_translations;
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39 }
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40
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41 void Locale::RefreshAvailableLocales() {
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42 _available_translations.clear();
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43
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44 /* we will always have en_US */
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45 _available_translations.push_back(QLocale("en_US"));
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46
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47 QDir dir(":/locale");
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48 if (!dir.exists())
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49 return;
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50
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51 QStringList translations = dir.entryList({"*.qm"}, QDir::Files);
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52
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53 _available_translations.reserve(translations.size());
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54 for (const QString& str : translations)
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55 _available_translations.push_back(QLocale(str.mid(0, str.lastIndexOf("."))));
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56 }
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58 bool Locale::IsLocaleAvailable(const QLocale& locale) const {
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59 for (const QLocale& l : _available_translations)
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60 if (l == locale)
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61 return true;
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62 return false;
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63 }
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64
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65 bool Locale::SetActiveLocale(const QLocale& locale) {
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66 if (!IsLocaleAvailable(locale) || !qApp)
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67 return false;
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69 if (_locale == locale)
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70 return true; /* we're... already on this locale :) */
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71
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72 _locale = locale;
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73 QLocale::setDefault(_locale);
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74
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75 /* we can still do stuff even if one thing fails! */
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76 bool return_value = true;
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77
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78 const QString name = _locale.name();
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79 if (!SwitchTranslator(_translator, QString(":/locale/%1.qm").arg(name)))
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80 return_value = false;
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81
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82 const QString path = qApp->applicationDirPath();
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83 if (!SwitchTranslator(_translator_qt, path + QString("/translations/qt_%1.qm").arg(name))) {
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84 /* Sometimes Qt will have proper translations for the language, but not the specific
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85 country. In that case, we still want to use that language. */
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86 const int underscore_index = name.lastIndexOf("_");
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87 if (!underscore_index)
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88 return false;
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89
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90 const QString short_name = name.mid(0, underscore_index);
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91 if (!SwitchTranslator(_translator_qt, path + QString("/translations/qt_%1.qm").arg(short_name)))
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92 return_value = false;
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93 }
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94
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95 return return_value;
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96 }
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97
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98 bool Locale::SwitchTranslator(QTranslator& translator, const QString& path) {
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99 qApp->removeTranslator(&translator);
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100
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101 if (!translator.load(path))
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102 return false;
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103
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104 qApp->installTranslator(&translator);
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105 return true;
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106 }
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108 } // namespace Locale