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winrt: Report system languages for QLocale::uiLanguages

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dc3e7e45ebe447c139868cc161b484eac478194d introduced locales from a
packaging perspective, providing the information available from the
package manifest. However, developers are rather interested in the
available and preferred system languages to update user interfaces.

Task-number: QTBUG-55672
Change-Id: I740d4f9c9ca21a8cbd437d3b232470897c569d34
Reviewed-by: Jens Bache-Wiig <jensbw@gmail.com>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
This commit is contained in:
Maurice Kalinowski 2016-09-07 13:47:26 +02:00
parent e9b51781d0
commit 13d20e4787
1 changed files with 8 additions and 36 deletions
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44
src/corelib/tools/qlocale_win.cpp
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@ -57,7 +57,7 @@
#include <wrl.h>
#include <windows.foundation.h>
#include <windows.foundation.collections.h>
#include <windows.globalization.h>
#include <windows.system.userprofile.h>
#endif // Q_OS_WINRT
QT_BEGIN_NAMESPACE
@ -70,6 +70,7 @@ static QString winIso3116CtryName(LCID id = LOCALE_USER_DEFAULT);
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::System::UserProfile;
static QByteArray getWinLocaleName(LPWSTR id = LOCALE_NAME_USER_DEFAULT);
static const char *winLangCodeToIsoName(int code);
@ -624,16 +625,17 @@ QVariant QSystemLocalePrivate::uiLanguages()
return result;
#else // !Q_OS_WINRT
QStringList result;
ComPtr<ABI::Windows::Globalization::IApplicationLanguagesStatics> appLanguagesStatics;
if (FAILED(GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Globalization_ApplicationLanguages).Get(), &appLanguagesStatics))) {
ComPtr<IGlobalizationPreferencesStatics> preferences;
HRESULT hr = GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_System_UserProfile_GlobalizationPreferences).Get(), &preferences);
if (FAILED(hr)) {
qWarning("Could not obtain ApplicationLanguagesStatic");
return QStringList();
}
ComPtr<ABI::Windows::Foundation::Collections::IVectorView<HSTRING> > languageList;
// Languages is a ranked list of "long names" (e.g. en-US) of preferred languages, which matches
// languages from the manifest with languages from the user's system.
HRESULT hr = appLanguagesStatics->get_Languages(&languageList);
// Languages is a ranked list of "long names" (e.g. en-US) of preferred languages
hr = preferences->get_Languages(&languageList);
Q_ASSERT_SUCCEEDED(hr);
unsigned int size;
hr = languageList->get_Size(&size);
@ -648,36 +650,6 @@ QVariant QSystemLocalePrivate::uiLanguages()
result << QString::fromWCharArray(rawString, length);
}
// ManifestLanguages covers all languages given in the manifest and uses short names (like "en").
hr = appLanguagesStatics->get_ManifestLanguages(&languageList);
Q_ASSERT_SUCCEEDED(hr);
hr = languageList->get_Size(&size);
Q_ASSERT_SUCCEEDED(hr);
for (unsigned int i = 0; i < size; ++i) {
HString language;
hr = languageList->GetAt(i, language.GetAddressOf());
Q_ASSERT_SUCCEEDED(hr);
UINT32 length;
PCWSTR rawString = language.GetRawBuffer(&length);
const QString qLanguage = QString::fromWCharArray(rawString, length);
bool found = false;
// Since ApplicationLanguages:::Languages uses long names, we compare the "pre-dash" part of
// the language and filter it out, if it is already covered by a more specialized form.
for (const QString &lang : qAsConst(result)) {
int dashIndex = lang.indexOf('-');
// There will not be any long name after the first short name was found, so we can stop.
if (dashIndex == -1)
break;
if (lang.leftRef(dashIndex) == qLanguage) {
found = true;
break;
}
}
if (!found)
result << qLanguage;
}
return result;
#endif // Q_OS_WINRT
}