winrt: Merge Languages and ManifestLanguages for QLocale::uiLanguages
Task-number: QTBUG-48140 Change-Id: I904ad48e7bc48867a362e3f6c5ca1516e55ed872 Reviewed-by: Andrew Knight <andrew.knight@intopalo.com> Reviewed-by: Maurice Kalinowski <maurice.kalinowski@theqtcompany.com>
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@ -48,6 +48,8 @@
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#endif
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#ifdef Q_OS_WINRT
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#include <qfunctions_winrt.h>
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#include <wrl.h>
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#include <windows.foundation.h>
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#include <windows.foundation.collections.h>
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@ -644,21 +646,53 @@ QVariant QSystemLocalePrivate::uiLanguages()
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}
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ComPtr<ABI::Windows::Foundation::Collections::IVectorView<HSTRING> > languageList;
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appLanguagesStatics->get_ManifestLanguages(&languageList);
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if (!languageList)
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return QStringList();
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// Languages is a ranked list of "long names" (e.g. en-US) of preferred languages, which matches
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// languages from the manifest with languages from the user's system.
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HRESULT hr = appLanguagesStatics->get_Languages(&languageList);
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Q_ASSERT_SUCCEEDED(hr);
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unsigned int size;
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languageList->get_Size(&size);
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hr = languageList->get_Size(&size);
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Q_ASSERT_SUCCEEDED(hr);
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result.reserve(size);
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for (unsigned int i = 0; i < size; ++i) {
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HString language;
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languageList->GetAt(i, language.GetAddressOf());
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hr = languageList->GetAt(i, language.GetAddressOf());
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Q_ASSERT_SUCCEEDED(hr);
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UINT32 length;
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PCWSTR rawString = language.GetRawBuffer(&length);
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result << QString::fromWCharArray(rawString, length);
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}
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// ManifestLanguages covers all languages given in the manifest and uses short names (like "en").
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hr = appLanguagesStatics->get_ManifestLanguages(&languageList);
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Q_ASSERT_SUCCEEDED(hr);
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hr = languageList->get_Size(&size);
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Q_ASSERT_SUCCEEDED(hr);
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for (unsigned int i = 0; i < size; ++i) {
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HString language;
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hr = languageList->GetAt(i, language.GetAddressOf());
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Q_ASSERT_SUCCEEDED(hr);
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UINT32 length;
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PCWSTR rawString = language.GetRawBuffer(&length);
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const QString qLanguage = QString::fromWCharArray(rawString, length);
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bool found = false;
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// Since ApplicationLanguages:::Languages uses long names, we compare the "pre-dash" part of
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// the language and filter it out, if it is already covered by a more specialized form.
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foreach (const QString &lang, result) {
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int dashIndex = lang.indexOf('-');
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// There will not be any long name after the first short name was found, so we can stop.
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if (dashIndex == -1)
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break;
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if (lang.leftRef(dashIndex) == qLanguage) {
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found = true;
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break;
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}
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}
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if (!found)
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result << qLanguage;
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}
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return result;
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#endif // Q_OS_WINRT
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}
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