445 lines
18 KiB
Plaintext
445 lines
18 KiB
Plaintext
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Qt 5.15 introduces many new features and improvements as well as bugfixes
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over the 5.14.x series. For more details, refer to the online documentation
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included in this distribution. The documentation is also available online:
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https://doc.qt.io/qt-5/index.html
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The Qt version 5.15 series is binary compatible with the 5.14.x series.
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Applications compiled for 5.14 will continue to run with 5.15.
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Some of the changes listed in this file include issue tracking numbers
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corresponding to tasks in the Qt Bug Tracker:
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https://bugreports.qt.io/
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Each of these identifiers can be entered in the bug tracker to obtain more
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information about a particular change.
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****************************************************************************
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* Important Behavior Changes *
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****************************************************************************
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- Calling QList::insert() or removeAt() with an out of bounds index is
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deprecated and will no longer be supported in Qt 6.
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****************************************************************************
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* Potentially Binary-Incompatible Changes *
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****************************************************************************
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- QHash:
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QHash's iterator category was changed from bidirectional iterator to
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forward iterator. This may cause trouble if a library uses the
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iterator category to alter functionality through tag dispatching. This
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only applies when compiling the library or application with
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QT_DISABLE_DEPRECATED_BEFORE=0x050F00 and the other with a lower value.
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****************************************************************************
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* Deprecation Notice *
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****************************************************************************
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- The binary JSON representation is deprecated. The CBOR format should be
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used instead.
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- [QTBUG-80308] QUrl::topLevelDomain() was deprecated in 5.15 and will be
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removed in 6.0
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- QtNetwork:
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* QNetworkConfigurationManager, QNetworkConfiguration and QNetworkSession
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are deprecated, to be removed in Qt 6.
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- [REVERTED] [QTBUG-80369] QAbstractSocket::error() (the getter) is
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deprecated; superseded by socketError().
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- [REVERTED] [QTBUG-80369] QLocalSocket::error() (the getter) is
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deprecated; superseded by socketError().
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- [QTBUG-80369] QSslSocket::sslErrors() (the getter) was deprecated and
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superseded by sslHandshakeErrors()
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- [REVERTED] [QTBUG-80369] QNetworkReply::error() (the getter) was
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deprecated; superseded by networkError().
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- [QTBUG-81630][QTBUG-80312] QLinkedList is deprecated and will be moved
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to Qt5Compat in Qt 6. It is recommended to use std::list instead.
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- QLocalSocket::error() (the signal) is deprecated; superseded by
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errorOccurred()
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- QAbstractSocket::error() (the signal) is deprecated; superseded by
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errorOccurred()
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- QNetworkReply::error() (the signal) is deprecated; superseded by
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errorOccurred()
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See also the various sections below, which include many more deprecations.
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****************************************************************************
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* QtCore *
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****************************************************************************
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- QCalendar::monthsInYear(QCalendar::Unspecified) now returns
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maximumMonthsInYear(). QCalendar::daysInYear() now makes clear that its
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handling of unspecified year is undefined.
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- Containers:
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* Added operator-> to the key-value iterator for QHash/QMap.
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- QAbstractItemModel:
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* [QTBUG-72587] The match() method now supports the new
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Qt::RegularExpression match flag value. This will allow users to use
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either a string or a fully configured QRegularExpression when doing
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searches. In the second case, the case sensitivity flag will be
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ignored if passed.
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- QByteArray:
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* resize() will no longer shrink the capacity. That means resize(0) now
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reliably preserves capacity().
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* Added the new fromBase64Encoding function.
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* Added new flags to make fromBase64 / fromBase64Encoding strictly
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validate their input, instead of skipping over invalid characters.
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- QCborArray:
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* Fixed an infinite loop when operator[] was called with an index larger
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than the array's size plus 1.
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- QCborMap:
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* [QTBUG-83366] Fixed some issues relating to assigning elements from a
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map to itself.
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- QCborValue:
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* fromCbor() now limits decoding to at most 1024 nested maps, arrays,
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and tags to prevent stack overflows. This should be sufficient for
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most uses of CBOR. An API to limit further or to relax the limit will
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be provided in 5.15. Meanwhile, if decoding more is required,
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QCborStreamReader can be used (note that each level of map and array
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allocates memory).
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- QDate:
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* QDate::toString(Qt::DateFormat, QCalendar) no longer takes calendar
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into account for Qt::TextDate. There was no matching support in
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QDateTime and the locale-independent formats are intended to be
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standard, rather than customized to the user.
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- QDateTime:
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* Added some missing QCalendar variants of QDateTime::toString().
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Included docs for QCalendar variants in both QDate and QDateTime.
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- QFile:
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* Introduce QFile::moveToTrash to allow applications to move files to
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the trash.
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- QFileInfo:
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* [QTBUG-75869] Add QFileInfo::isJunction so that applications can
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recognize NTFS file system entries as junctions
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- QHash:
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* Reverse iteration over QHash is now deprecated.
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* insertMulti(), unite() and values(const Key &key) are now deprecated.
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Please use QMultiHash instead.
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- QJsonObject:
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* Fixed a regression from 5.13 that incorrect results when assigning
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elements from an object to itself.
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- QLatin1String:
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* Added compare().
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- QLibrary and QPluginLoader:
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* [QTBUG-39642] Fixed a deadlock that would happen if the plugin or
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library being loaded has load-time initialization code (C++ global
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variables) that recursed back into the same QLibrary or QPluginLoader
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object.
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- QLocale:
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* Deprecated toTime() variants taking a calendar. The calendar is
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ignored in time parsing.
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* Data used for currency formats in several locales and list patterns in
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some locales have changed due to now parsing the CLDR data more
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faithfully.
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* [QTBUG-79902] Currency formats are now based on CLDR's accounting
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formats, where they were previously mostly based (more or less by
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accident) on standard formats. In particular, this now means negative
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currency formats are specified, where available, where they (mostly)
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were not previously.
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- QMap:
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* [QTBUG-35544] insertMulti(), unite(), values(Key), uniqueKeys(),
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count(Key) is now deprecated. Please use QMultiMap instead.
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- QObject:
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* [QTBUG-76375] A logging category
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qt.core.qmetaobject.connectslotsbyname was added, which will report
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on the connections made by QMetaObject::connectSlotsByName().
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- QProcess:
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* Overloads of start/execute/startDatached that parse a single command
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string into program and arguments have been marked as deprecated. A
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static helper splitCommand has been added to construct a QStringList
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from a command string.
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- QRandomGenerator:
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* The system() random generator will now use the RDSEED instruction on
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x86 processors whenever available as the first source of random data.
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It will fall back to RDRAND and then to the system functions, in that
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order.
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- QRegularExpression:
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* The escape(), wildcardToRegularExpression() and anchoredPattern()
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functions now have overloads taking a QStringView parameter.
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- QResource:
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* Added uncompressedSize() and uncompressedData(), which will perform
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any required decompression on the data, prior to returning (unlike
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data() and size()).
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- QSet:
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* Reverse iteration over QSet is now deprecated.
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- QStandardPaths:
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* When used in a low-integrity process on Windows,
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QStandardPaths::writableLocation returns respective low-integrity
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paths.
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- QString:
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* Added QString::isValidUtf16.
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- QStringView:
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* Added QStringView::isValidUtf16.
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* Added compare() overloads taking QLatin1String, QChar.
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* Conversion from std::basic_string can now be constexpr (when
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std::basic_string is).
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- QTimeZone:
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* The constructor can now handle general UTC-offset zone names. The
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reported id() of such a zone shall be in canonical form, so might not
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match the ID passed to the constructor.
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- QXmlStream:
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* QXmlStreamReader does now by default limit the expansion of entities
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to 4096 characters. Documents where a single entity expands to more
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characters than the limit are not considered well formed. The limit is
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there to avoid DoS attacks through recursively expanding entities when
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loading untrusted content. The limit can be changed through the
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QXmlStreamReader::setEntityExpansionLimit() method.
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- moc:
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* Moc now correctly sets a non-null QMetaObject::superClass for
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Q_GADGETs that inherit from a template which inherits another
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Q_GADGET.
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* [QTBUG-74521][QTBUG-76598] moc can now output a ".d" dep file that can
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be consumed by other build systems.
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****************************************************************************
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* QtGui *
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****************************************************************************
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- Extended QVulkanWindow to allow user to specify additional queues to be
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created.
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- Added API for starting interactive window resize and move operations
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handled by the system.
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- QClipboard:
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* Support lazily-provided copying of data to the clipboard on macOS
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- QCursor:
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* [QTBUG-48701] QCursor::bitmap() and QCursor::mask() can now return
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by-value instead of by-pointer.
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- QFont:
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* Deprecated QFont::ForceIntegerMetrics and QFont::OpenGLCompatible,
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with the intention of removing them in Qt 6.0.0.
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- QMarkdownWriter:
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* [QTBUG-80603] Code blocks are no longer word-wrapped; the beginning
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fence of a code block no longer has a space before the language string;
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and the ending fence is no longer skipped in some cases where it was.
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- QPdfWriter:
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* New API to provide external document XMP metadata and attach files to
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PDF.
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- QTabletEvent:
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* QTabletEvent::device() is deprecated, because the plan is to return
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an object pointer in Qt 6 rather than an enum. The enum is now provided
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by deviceType().
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* hiResGlobalX() and hiResGlobalY() are deprecated, because globalPosF()
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has the same resolution. But globalPosF() (and several others) will
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probably be renamed in Qt 6. The replacements are not in place yet.
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* [QTBUG-77826] Local coordinates are now correct when the event is
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delivered to a nested window on X11.
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- Text:
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* Fixed a problem where pixel sizes would be truncated before calculating
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glyph positions.
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* Fixed an issue with QFont::PreferNoShaping where boxes would appear in
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place of unprintable characters.
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* Fixed a problem where certain bold fonts would be synthetically
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emboldened by Qt when using the Freetype font engine.
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- Application palettes are now resolved against the platform's theme
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palette, the same way widget palettes are resolved against their parents,
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and the application palette. This means the application palette reflected
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through QGuiApplication::palette() may not be exactly the same palette as
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set via QGuiApplication::setPalette().
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****************************************************************************
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* QtWidgets *
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****************************************************************************
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- Added QStyleOptionTabV4 as a subclass of QStyleOptionTab so that the
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tab's index information can be obtained.
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- ItemViews:
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* [QTBUG-76423] The convenience views QList/Table/TreeWidgetItem now
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treat a default constructed QBrush or QSize as an empty QVariant which
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allows resetting of the values set to it's default values.
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- QApplication:
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* The globalStrut property has been deprecated and will be removed from
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Qt 6.
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- QButtonGroup:
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* Added signals idClicked/Pressed/Released/Toggled that replace the
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deprecated signal overloads.
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- QComboBox:
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* QComboBox got a new property 'placeholderText'
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* Support checkable items in styles that use a popup for the dropdown.
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* the SizeAdjustPolicy value AdjustToMinimumContentLength is deprecated,
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use AdjustToContents or AdjustToContentsOnFirstShow instead.
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- QGraphicsView:
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* Fixed a bug where hover events would not be delivered if the item was
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added while blocked by a modal panel.
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- QLabel:
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* [QTBUG-48701] QLabel::pixmap() and QLabel::picture() can now return
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by-value instead of by-pointer.
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- QLineEdit:
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* Inputmask X character now requires non-blank input.
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- QMenu:
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* a popup menu hides when a QWidgetAction added to it fires the
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triggered signal.
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- QShortcut:
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* QShortcut ctor has now pointer to member function overloads
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- QStyle:
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* You can now set the CSS property 'icon' on a QPushButton to override
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which icon to draw.
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- QSystemTrayIcon:
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* On macOS, clicking on the message will remove the notification.
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- QTabWidget/QTabBar:
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* Tabs can now be hidden with setTabVisible
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- QWidget:
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* Fonts and palette settings are inherited by children from their
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parents even if the children have application-wide platform theme
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overrides.
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- QWizard:
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* visitedPages has been deprecated, use visitedIds instead.
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****************************************************************************
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* QtNetwork *
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****************************************************************************
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- A new signal introduced to report when a valid session ticket is received
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(TLS 1.3)
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- SSL:
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* Removed OpenSSL 1.0.x support, now 1.1.x is required
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* The minimum required version of OpenSSL is now 1.1.1.
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- QSslCertificate:
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* [QTBUG-72587] Add overload of fromPath that does not make use of
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QRegExp and deprecate the QRegExp variant.
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****************************************************************************
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* QtSql *
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****************************************************************************
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- QMYSQL:
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* Removed support for MySql < 5.0 since 5.0 was released 14 years ago.
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* The QMYSQL plugin can now be build with the MariaDB C connector libs
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on Windows.
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- QSqlDriver:
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* The one-arg version of QSqlDriver::notifcation() is now deprecated.
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****************************************************************************
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||
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* QTestLib *
|
||
|
|
****************************************************************************
|
||
|
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|
||
|
|
- The formerly named 'xunitxml' test reporter has been renamed to what it
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||
|
|
actually is: a JUnit test reporter, and is now triggered by passing -o
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||
|
|
junitxml to the test binary.
|
||
|
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|
||
|
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****************************************************************************
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||
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* QtXml *
|
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|
|
****************************************************************************
|
||
|
|
|
||
|
|
- [QTBUG-76177] SAX classes are now deprecated. Use QXmlStreamReader,
|
||
|
|
QXmlStreamWriter in QtCore instead.
|
||
|
|
|
||
|
|
****************************************************************************
|
||
|
|
* Configure *
|
||
|
|
****************************************************************************
|
||
|
|
|
||
|
|
- Add switch "-coverage source-based" to enable clang's "source-based" code
|
||
|
|
coverage feature. This can be used for code coverage analysis.
|
||
|
|
|
||
|
|
- X11:
|
||
|
|
* [QTBUG-67277][QTBUG-30939] The minimal required version of libxcb now
|
||
|
|
is 1.11.
|
||
|
|
* [QTBUG-67277][QTBUG-30939] Removed -qt-xcb, -system-xcb, -xkb,
|
||
|
|
-xcb-xinput switches.
|
||
|
|
|
||
|
|
****************************************************************************
|
||
|
|
* cmake *
|
||
|
|
****************************************************************************
|
||
|
|
|
||
|
|
- Fixed an issue where some Qt location and declarative plugins whose name
|
||
|
|
did not end with "Plugin" where not imported by the corresponding Qt
|
||
|
|
component package.
|
||
|
|
|
||
|
|
****************************************************************************
|
||
|
|
* Third-Party Code *
|
||
|
|
****************************************************************************
|
||
|
|
|
||
|
|
- libjpeg-turbo was updated to version 2.0.4
|
||
|
|
|
||
|
|
- X11:
|
||
|
|
* [QTBUG-67277][QTBUG-30939] Removed all bundled XCB libs, with the
|
||
|
|
exception of xcb-xinput, which is not available on systems with libxcb
|
||
|
|
1.11.
|
||
|
|
|
||
|
|
****************************************************************************
|
||
|
|
* Platform Specific Changes *
|
||
|
|
****************************************************************************
|
||
|
|
|
||
|
|
- Linux:
|
||
|
|
* Enable accessibility on Linux when Orca is started by hand
|
||
|
|
* [QTBUG-78754] Vulkan is now supported by eglfs (eglfs_viv backend) on
|
||
|
|
i.MX8 devices with the Vivante graphics stack. This is done via
|
||
|
|
VK_KHR_display so no windowing system is required.
|
||
|
|
|
||
|
|
- X11:
|
||
|
|
* [QTBUG-67277][QTBUG-30939] XKB and XInput2 now are mandatory
|
||
|
|
dependencies for XCB plugin. XCB-XKB is a part of libxcb 1.11
|
||
|
|
releases. XCB-XInput is not part of libxcb 1.11 releases, but Qt
|
||
|
|
builders can use the -bundled-xcb-xinput switch.
|
||
|
|
|
||
|
|
- Android:
|
||
|
|
* [REVERTED] Qt::MaximizeUsingFullscreenGeometryHint window flag is
|
||
|
|
now supported, and will make the window fullscreen, but keep the
|
||
|
|
system UI on-screen, with a translucent background color.
|
||
|
|
* [QTBUG-82120] Use native file dialog by default for open and save
|
||
|
|
operations.
|
||
|
|
|
||
|
|
- Windows:
|
||
|
|
* Fixed a bug where some fonts would not be accessible by
|
||
|
|
referencing their typographic name.
|
||
|
|
* Fixed a 2 pixel offset on glyphs when using color fonts or any
|
||
|
|
hinting preference other than the default (full) hinting.
|
||
|
|
|
||
|
|
- WebAssembly:
|
||
|
|
* Updated emscripten to version 1.39.8
|