diff options
Diffstat (limited to 'src/corelib/tools/qtimezoneprivate_win.cpp')
| -rw-r--r-- | src/corelib/tools/qtimezoneprivate_win.cpp | 100 |
1 files changed, 99 insertions, 1 deletions
diff --git a/src/corelib/tools/qtimezoneprivate_win.cpp b/src/corelib/tools/qtimezoneprivate_win.cpp index a9bb3aa3b5..0cb26c2e5b 100644 --- a/src/corelib/tools/qtimezoneprivate_win.cpp +++ b/src/corelib/tools/qtimezoneprivate_win.cpp @@ -42,6 +42,10 @@ QT_BEGIN_NAMESPACE +#ifndef Q_OS_WINRT +#define QT_USE_REGISTRY_TIMEZONE 1 +#endif + /* Private @@ -59,9 +63,10 @@ QT_BEGIN_NAMESPACE // Vista introduced support for historic data, see MSDN docs on DYNAMIC_TIME_ZONE_INFORMATION // http://msdn.microsoft.com/en-gb/library/windows/desktop/ms724253%28v=vs.85%29.aspx - +#ifdef QT_USE_REGISTRY_TIMEZONE static const char tzRegPath[] = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones"; static const char currTzRegPath[] = "SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation"; +#endif enum { MIN_YEAR = -292275056, @@ -123,6 +128,7 @@ static bool equalTzi(const TIME_ZONE_INFORMATION &tzi1, const TIME_ZONE_INFORMAT && wcscmp(tzi1.DaylightName, tzi2.DaylightName) == 0); } +#ifdef QT_USE_REGISTRY_TIMEZONE static bool openRegistryKey(const QString &keyPath, HKEY *key) { return (RegOpenKeyEx(HKEY_LOCAL_MACHINE, (const wchar_t*)keyPath.utf16(), 0, KEY_READ, key) @@ -197,9 +203,61 @@ static TIME_ZONE_INFORMATION getRegistryTzi(const QByteArray &windowsId, bool *o return tzi; } +#else // QT_USE_REGISTRY_TIMEZONE +struct QWinDynamicTimeZone +{ + QString standardName; + QString daylightName; + QString timezoneName; + qint32 bias; + bool daylightTime; +}; + +typedef QHash<QByteArray, QWinDynamicTimeZone> QWinRTTimeZoneHash; + +Q_GLOBAL_STATIC(QWinRTTimeZoneHash, gTimeZones) + +static void enumerateTimeZones() +{ + DYNAMIC_TIME_ZONE_INFORMATION dtzInfo; + quint32 index = 0; + QString prevTimeZoneKeyName; + while (SUCCEEDED(EnumDynamicTimeZoneInformation(index++, &dtzInfo))) { + QWinDynamicTimeZone item; + item.timezoneName = QString::fromWCharArray(dtzInfo.TimeZoneKeyName); + // As soon as key name repeats, break. Some systems continue to always + // return the last item independent of index being out of range + if (item.timezoneName == prevTimeZoneKeyName) + break; + item.standardName = QString::fromWCharArray(dtzInfo.StandardName); + item.daylightName = QString::fromWCharArray(dtzInfo.DaylightName); + item.daylightTime = !dtzInfo.DynamicDaylightTimeDisabled; + item.bias = dtzInfo.Bias; + gTimeZones->insert(item.timezoneName.toUtf8(), item); + prevTimeZoneKeyName = item.timezoneName; + } +} + +static DYNAMIC_TIME_ZONE_INFORMATION dynamicInfoForId(const QByteArray &windowsId) +{ + DYNAMIC_TIME_ZONE_INFORMATION dtzInfo; + quint32 index = 0; + QString prevTimeZoneKeyName; + while (SUCCEEDED(EnumDynamicTimeZoneInformation(index++, &dtzInfo))) { + const QString timeZoneName = QString::fromWCharArray(dtzInfo.TimeZoneKeyName); + if (timeZoneName == QLatin1String(windowsId)) + break; + if (timeZoneName == prevTimeZoneKeyName) + break; + prevTimeZoneKeyName = timeZoneName; + } + return dtzInfo; +} +#endif // QT_USE_REGISTRY_TIMEZONE static QList<QByteArray> availableWindowsIds() { +#ifdef QT_USE_REGISTRY_TIMEZONE // TODO Consider caching results in a global static, very unlikely to change. QList<QByteArray> list; HKEY key = NULL; @@ -217,10 +275,16 @@ static QList<QByteArray> availableWindowsIds() RegCloseKey(key); } return list; +#else // QT_USE_REGISTRY_TIMEZONE + if (gTimeZones->isEmpty()) + enumerateTimeZones(); + return gTimeZones->keys(); +#endif // QT_USE_REGISTRY_TIMEZONE } static QByteArray windowsSystemZoneId() { +#ifdef QT_USE_REGISTRY_TIMEZONE // On Vista and later is held in the value TimeZoneKeyName in key currTzRegPath QString id; HKEY key = NULL; @@ -241,6 +305,11 @@ static QByteArray windowsSystemZoneId() if (equalTzi(getRegistryTzi(winId, &ok), sysTzi)) return winId; } +#else // QT_USE_REGISTRY_TIMEZONE + DYNAMIC_TIME_ZONE_INFORMATION dtzi; + if (SUCCEEDED(GetDynamicTimeZoneInformation(&dtzi))) + return QString::fromWCharArray(dtzi.TimeZoneKeyName).toLocal8Bit(); +#endif // QT_USE_REGISTRY_TIMEZONE // If we can't determine the current ID use UTC return QTimeZonePrivate::utcQByteArray(); @@ -361,6 +430,7 @@ void QWinTimeZonePrivate::init(const QByteArray &ianaId) } if (!m_windowsId.isEmpty()) { +#ifdef QT_USE_REGISTRY_TIMEZONE // Open the base TZI for the time zone HKEY baseKey = NULL; const QString baseKeyPath = QString::fromUtf8(tzRegPath) + QLatin1Char('\\') @@ -397,6 +467,34 @@ void QWinTimeZonePrivate::init(const QByteArray &ianaId) } RegCloseKey(baseKey); } +#else // QT_USE_REGISTRY_TIMEZONE + if (gTimeZones->isEmpty()) + enumerateTimeZones(); + QWinRTTimeZoneHash::const_iterator it = gTimeZones->find(m_windowsId); + if (it != gTimeZones->constEnd()) { + m_displayName = it->timezoneName; + m_standardName = it->standardName; + m_daylightName = it->daylightName; + DWORD firstYear = 0; + DWORD lastYear = 0; + DYNAMIC_TIME_ZONE_INFORMATION dtzi = dynamicInfoForId(m_windowsId); + GetDynamicTimeZoneInformationEffectiveYears(&dtzi, &firstYear, &lastYear); + // If there is no dynamic information, you can still query for + // year 0, which helps simplifying following part + for (DWORD year = firstYear; year <= lastYear; ++year) { + TIME_ZONE_INFORMATION tzi; + if (!GetTimeZoneInformationForYear(year, &dtzi, &tzi)) + continue; + QWinTransitionRule rule; + rule.standardTimeBias = tzi.Bias + tzi.StandardBias; + rule.daylightTimeBias = tzi.Bias + tzi.DaylightBias - rule.standardTimeBias; + rule.standardTimeRule = tzi.StandardDate; + rule.daylightTimeRule = tzi.DaylightDate; + rule.startYear = year; + m_tranRules.append(rule); + } + } +#endif // QT_USE_REGISTRY_TIMEZONE } // If there are no rules then we failed to find a windowsId or any tzi info |