98a445fa23
Edited-by: Thiago Macieira <thiago.macieira@intel.com> Change-Id: I65a59400c802db282fdbd87b1b9b89e9e5e962f6 Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Tuukka Turunen <tuukka.turunen@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
471 lines
20 KiB
Plaintext
471 lines
20 KiB
Plaintext
Qt 5.12 introduces many new features and improvements as well as bugfixes
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over the 5.11.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 5.12 series is binary compatible with the 5.11.x series.
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Applications compiled for 5.11 will continue to run with 5.12.
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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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- QtCore:
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* [QTBUG-34460] qFatal() no longer uses std::abort() on Windows, as
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there are circumstances where global destructors are still run after
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that call, leading to possible deadlocks.
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- QRegularExpression:
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* [QTBUG-66781] Regular expressions are now automatically optimized
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(including JIT compiling) on their first usage. The pattern options
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OptimizeOnFirstUsageOption and DontAutomaticallyOptimizeOption no
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longer have any effect, and will get removed in a future version of
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Qt. QRegularExpression::optimize() can be still used to compile and
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optimize the regular expression in advance (before any match), if
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needed.
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- QDataStream:
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* [QTBUG-59978][QTBUG-67995] version bumped up to 18 to account for
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changes in the serialization of QGradient.
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- Dialogs:
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* QFileSystemModel now uses QRegularExpression internally for wildcard
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matching. Note that QRegularExpression might not give the exact same
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result as QRegExp as its implementation follows strictly the glob
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patterns definition for wildcard expressions.
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****************************************************************************
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* Third-Party Code *
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****************************************************************************
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- Sources of xcb-xinput 1.13 were bundled and are available via -qt-xcb.
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- The minimal required version of libxcb is now 1.9. Bundled xcb sources
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were updated to libxcb 1.9.1 built with xcb-proto 1.8.
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- [QTBUG-67654] Updated CLDR to version 33.1
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- [QTBUG-66561][QTBUG-70008] double-conversion got updated to upstream
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version 3.1.1.
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- libjpeg-turbo was updated to version 2.0.0
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- libpng was updated to version 1.6.35
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- Sqlite was updated to version 3.25.2
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- [QTBUG-71109] updated bundled libxkbcommon 0.4.1 -> 0.8.2 (up to
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31f1f355700870c6615399fbfa7934934b3a9a57)
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- PCRE2 was updated to version 10.32.
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- Added documentation for the SLJIT part of pcre2, which is available
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under the BSD-2-Clause license.
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****************************************************************************
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* Tools *
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****************************************************************************
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- rcc:
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* Added a --list-mapping option which shows a mapping of resource paths
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to file system paths.
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- qmake
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* New CONFIG options lrelease and embed_translations were added.
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CONFIG+=lrelease does run lrelease on translation files listed in
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TRANSLATIONS and EXTRA_TRANSLATIONS. CONFIG+=embed_translations does
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include the generated .qm files as resources under :/i18n/.
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- uic
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* [QTBUG-65251][QTBUG-51602] The -no-stringliteral option is now
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deprecated and UIC will not generate QStringLiteral anymore.
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****************************************************************************
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* QtCore *
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****************************************************************************
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- Added support for CBOR:
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* Added QCborStreamReader and QCborStreamWriter, classes for low-level
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reading and writing of CBOR streams.
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* Added QCborValue, QCborArray and QCborMap, classes that permit DOM-like
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access to CBOR data. The API is similar to QJsonValue, QJsonArray and
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QJsonObject, respectively.
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- QByteArray:
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* Added QByteArray::isUpper() and QByteArray::isLower() to check if a
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byte array contains only uppercase or only lowercase Latin1 letters.
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* Added compare(), which takes Qt::CaseSensitivity as one of the
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parameters. This function is more efficient than using toLower() or
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toUpper() and then comparing.
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* [QTBUG-66187] QByteArray::toInt(), QByteArray::toDouble() and the
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other number conversion functions now ignore leading and trailing
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whitespaces, as their QString counterparts already did. For
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consistency reasons, the same behavior was added to
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qEnvironmentVariableIntValue() also.
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- QCommandLineParser:
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* [QTBUG-70174] Fixed a bug that caused the help output to show two
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options or more in the same line if the options didn't have a
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description.
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- QCryptographicHash:
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* Add a static method, hashLength, which returns the length of the
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output of a hash function in bytes.
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- QDir:
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* QDir now uses QRegularExpression internally for wildcard matching.
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Note that QRegularExpression might not give the exact same result as
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QRegExp as its implementation follows strictly the glob patterns
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definition for wildcard expressions. Nevertheless, the tests for QDir
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return the same results as before.
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* QDir::tempPath() now reports the canonical path of the temporary
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directory, with any symlinks resolved.
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* On Windows, QDir::drives() no longer returns drives whose media were
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ejected.
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- QExplicitlySharedDataPointer:
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* [QTBUG-66635][QTBUG-66946] Added operator== for nullptr.
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- QFile:
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* [QTBUG-13470] When opening a file, if Truncate is asked for, or
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implied by other flags, it shall be attempted, regardless of what
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other options are selected. We previously did this on Windows; now we
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do so also on Unix (even when appending).
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- QFileSystemWatcher:
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* [QTBUG-69320] Fixed a bug that caused addPaths() to crash on Windows
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if adding a path to be watched on removable storage, if that
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addPaths() was called on a thread not created by QThread and no
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QEventLoop has been created yet.
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- QFlags's operator| for enum types in the Qt namespace are now declared
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in the Qt namespace itself.
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- QLocale:
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* [QTBUG-57802] Added support for World and Europe as (numeric)
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"country" codes ("territory" in CLDR terms), thereby enabling support
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for Yiddish and Esperanto, among other locales using such codes.
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- Logging:
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* [QTBUG-69548] Qt will now accept qtlogging.ini files written by
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QSettings.
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- QMetaType can now register constructor for a set of dynamic types.
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- QRegularExpression:
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* Implemented support for wildcard patterns through a static method.
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* QRegularExpression now provides anchoredPattern() which is a helper
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function to build regular expressions used for exact matching.
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* Implemented support for wildcard patterns. Warning: QRegularExpression
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might not give the exact same result as QRegExp as its implementation
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follows strictly the glob patterns definition for the wildcard
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expressions.
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- [QTBUG-62894] Introduced QScopeGuard.
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- QSharedDataPointer:
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* [QTBUG-66635][QTBUG-66946] Added operator== for nullptr.
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- QSortFilterProxyModel:
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* [QTBUG-46810] QSortFilterProxyModel now supports QRegularExpression.
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* Setters of both the filterRegExp and filterRegularExpression
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properties are now slots and can be used with the old as well as the
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new syntax.
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- QString:
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* Added the functions QString::isUpper() and QString::isLower() to check
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if a string contains only uppercase or only lowercase letters.
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- QTextCodec:
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* [QTBUG-56203] QTextCodec automatically deregisters on destruction now.
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- QTimer:
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* [QTBUG-69800] Fixed singleShot() methods that lacked proper "const"
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qualification to QObject context receivers.
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* Added QTimer::connectTo(), a shorthand way of connecting to the
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timeout() signal.
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- QTranslator:
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* [QTBUG-31031] It is now possible to load qm files without any
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translations. This is particularly useful for the language the
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untranslated strings are written in; logic to load translations can
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now handle the source language like all other languages.
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- QUndoStack:
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* [QTBUG-40040] Exposed canUndo, canRedo, undoText, redoText and clean as
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Q_PROPERTYs.
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- QUrl:
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* Fixed a bug that caused QUrl::matches to incorrectly compare two URLs
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with different hostnames or different usernames as equal, if certain
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QUrl::RemoveXxx options were passed.
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- other:
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* Added an overload of q{To,From}{Big,Little}Endian that operates on a
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memory region.
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* Added the QT_TR_N_NOOP(), QT_TRANSLATE_N_NOOP(), and
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QT_TRANSLATE_N_NOOP3() macros for numeral dependent delayed
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translation.
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****************************************************************************
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* QtGui *
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****************************************************************************
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- QBitmap:
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* Added overloaded QBitmap::fromImage that takes QImage rvalue.
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- QDocumentWriter:
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* [QTBUG-63581] QDocumentWriter now supports table borders, table
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alignment, table width, column widths, line height and image
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resolution when exporting QTextDocuments to ODF files.
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- QGradient:
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* [QTBUG-59978][QTBUG-67995] Added ObjectMode coordinate mode.
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- QGuiApplication:
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* [QTBUG-26413] Fixed queryKeyboardModifiers() on macOS to actually return
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the current modifier key state.
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- QImage:
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* [QTBUG-45858] QImage now supports 64bit image formats with 16 bits per
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color channel, compatible with 16bpc PNG or RGBA16 OpenGL formats.
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- QIntValidator:
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* [QTBUG-59650] Input value with over the highest acceptable value, but
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with no more digits than the maximum value, is now considered
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intermediate.
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- QOpenGLShader:
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* [QTBUG-66074] QOpenGLShader has been fixed to expose geometry and
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tessellation evaluation/control shaders with OpenGL ES 3.2.
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- QPagedPaintDevice:
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* The default constructor has been deprecated since that class is
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not meant to be used standalone. The two public but internal
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devicePageLayout() methods are now deprecated.
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- QPainter:
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* [QTBUG-67248] Fixed drawTiledPixmap() and texture-brush painting with
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high-DPR images.
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* QPainter::drawTiledPixmap() now tiles in the device independent
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coordinate system.
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- QPicture:
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* [QTBUG-71208] Fixed a crash reading malformed picture file.
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- QStandardItemModel:
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* itemData does not return role 255 any more.
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- QTextImageFormat:
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* Added two new functions to the class: setQuality(int=100) and
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quality(). They are currently used by QTextODFWriter to determine the
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image type and quality when exporting images to ODT files.
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- Text:
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* [QTBUG-57479] Non-breaking spaces are now displayed as a degree symbol
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when QTextOption::ShowTabsAndSpaces is used.
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* [QTBUG-69085] Fixed position of text cursor set by clicking outside
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the bounds of a text line that ends with a surrogate pair or ligature.
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* [QTBUG-70293] Fixed a crash that can happen when calling a setter on a
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QTextCursor after its QTextDocument has been deleted.
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****************************************************************************
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* QtNetwork *
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****************************************************************************
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- Added DTLS over UDP support.
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- QPasswordDigestor:
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* [QTBUG-30550] Added QPasswordDigestor
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- QSslKey:
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* [QTBUG-17718] The OpenSSL backend can now load encrypted PKCS#8
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DER-encoded keys.
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* [QTBUG-59068] Added support for PKCS#8-encoded keys in the generic SSL
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back-end (used for SecureTransport on macOS and for WinRT). Note that
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it does not support keys encrypted with a PKCS#12 algorithm.
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- QSslSocket:
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* Enabled ALPN (and thus HTTP/2 negotiation) in SecureTransport backend
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(macOS).
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* [QTBUG-69420] Implemented renegotiation for SecureTransport backend.
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- SSL:
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* The OpenSSL 1.1 backend also works with OpenSSL 1.1.1 (and thus can
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negotiate TLS 1.3).
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* [QTBUG-68156] OpenSSL >= 1.0 is now required to build Qt with OpenSSL
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support.
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****************************************************************************
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* QtSql *
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****************************************************************************
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- MySQL:
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* Now supports MySQL versions >= 8.0.1.
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* [QTBUG-57028] The TIME data type is now treated like a string-based
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type in order to respect the full range of the TIME data type.
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****************************************************************************
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* QtTest *
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****************************************************************************
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- QCOMPARE:
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* Now outputs contents of std::tuple on failure.
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* [QTBUG-65845] QtTest now prints values of QFlags that failed to compare.
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****************************************************************************
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* QtWidgets *
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****************************************************************************
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- Itemviews:
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* [QTBUG-12129][QTBUG-14949][QTBUG-57891] Fixed eliding of multi-line
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items.
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- QAbstractSpinBox:
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* [QTBUG-67380] The Qt::ControlModifier now increases the number of steps a
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QAbstractSpinBox takes for the following interactions: scrolling, up/down
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keyboard keys and the spin box buttons. Previously, Qt::ControlModifier
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only affected scrolling.
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- QApplication:
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* [QTBUG-67736] QApplication no longer sends a mouse move event to the
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entered widget if it sends synthetic enter and leave events.
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- QHeaderView:
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* [QTBUG-23203] Padding/margin is now taken into account when the text gets
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elided.
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* [QTBUG-59501] The qss padding attribute is now honored in all cases.
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* [QTBUG-62091] The size of the decoration is now taken into account in
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paintSection().
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* [QTBUG-65017] The drag'n'drop indicator is now using the correct font.
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* [QTBUG-69431] setDefaultSectionSize() now checks if the given value is
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inside min/max section size.
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* [QTBUG-70084] The section indicator is now high-DPI-aware.
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- QItemDelegate:
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* [QTBUG-16134] Fixed text height calculation when the item has a
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decoration or checkbox.
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- QLineEdit:
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* [QTBUG-44046] The textEdited() signal is now emitted even if the
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QValidator has changed the user input.
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* [QTBUG-57448] Added inputRejected() signal for when a key press is not
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accepted by the QLineEdit. For instance, when an invalid key is
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pressed for a validator set.
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- QListView:
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* [QTBUG-27110] The pseudo states :first/:middle/:last are now respected.
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* [QTBUG-56606] Added itemAlignment property.
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* [QTBUG-67440] Fixed a bug that caused items on internal move to be
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deleted.
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- QMenu:
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* [QTBUG-69199] Removed icon highlight when a stylesheet was applied by
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the application.
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- QMessageBox:
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* [QTBUG-35545] On Android and iOS it's now possible to show a
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QMessageBox with custom buttons as a native dialog.
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- QSpinBox/QDoubleSpinBox:
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* Added an option for adaptive decimal step size.
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- QSplashScreen:
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* [QTBUG-43081] The alignment when the message is passed as HTML is now
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correctly honored.
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- QStyle:
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* QStyle::SH_SpinBox_StepModifier allows the developer to pick which
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keyboard modifier increases the number of steps a QAbstractSpinBox
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takes for the following interactions: scrolling, up/down keyboard keys
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and the spin box buttons. The Qt::ShiftModifier can now be used, or
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the feature can be disabled using Qt::NoModifier. Previously, only
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Qt::ControlModifier could be used as the modifier.
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- QTabBar:
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* [QTBUG-18146] Fixed mixed up CSS pseudo class for left and right.
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- QTableView:
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* [QTBUG-48244][QTBUG-49548] Fixed calculating geometries for editors.
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* [QTBUG-70215] Fixed PageUp not getting to top when first row is hidden.
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- QTableWidget:
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* Fixed handling of Qt::EditRole and Qt::DisplayRole in setItemData().
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- QTreeView:
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* [QTBUG-39486] Sped up expanding items when pressing asterisk.
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- QWidget:
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* [QTBUG-68393][QTBUG-69619][QTBUG-10907] Fixed several bugs that
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incorrectly reordered tabs for compound widgets under some special
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circumstances.
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* [QTBUG-65199] enterEvent() and leaveEvent() now occur when a hovering
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drawing tablet stylus enters or leaves a widget.
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* Added the Qt::WA_StyleSheetTarget attribute to indicate that a widget
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was affected by a style sheet.
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****************************************************************************
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* Android *
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****************************************************************************
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- Added Android edit context menu.
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- Removed old debugging bridge. To be able to debug Qt on Android apps the
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user must use QtCreator 4.6.1+.
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- [QTBUG-63735] The system no longer restarts the application when the user
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replaces SIM card or changes the logical density of the screen.
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- [QTBUG-70280] ARM64 builds now default to android-21 instead of failing.
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- [QTBUG-35545] QMessageBox now supports buttons with custom labels.
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****************************************************************************
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* Linux *
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****************************************************************************
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- QFileDialog will use the native dialogs provided by the platform theme
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instead of trying to use Flatpak portal to select directories.
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****************************************************************************
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* macOS *
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****************************************************************************
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- Layer-backed mode is now the default for QWindow.
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- QtGui:
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* [QTBUG-63800] Fixed display of condensed fonts when NoFontMerging is
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in use.
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- Text:
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* [QTBUG-69955] Fixed font weights on macOS 10.14.
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****************************************************************************
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* Windows *
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****************************************************************************
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- [QTBUG-55762] The dimensions of invisible margins inside the frames of
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Windows 10 windows will now be disregarded in the positioning of Qt
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windows to avoid a misplaced look (offset by a few pixels from the
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expected position).
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- [QTBUG-44964][QTBUG-60437] The application attributes
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AA_CompressTabletEvents and AA_CompressHighFrequencyEvents are now
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supported on Windows 8 and above for touch/pen input, with the same
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defaults as on X11 (compress touch events, don't compress tablet events)
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- QTimeZone:
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* [QTBUG-42021] Changed MS-Win to use ICU for time-zone data, when
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available, in preference to MS's TZ APIs. The choice is made when
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building Qt. This will give reliable results when non-DST transitions
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arise, or when a zone's DST is not simple (e.g. interrupted by
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Ramadan).
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****************************************************************************
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* winrt *
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****************************************************************************
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- Added support to Windows UI Automation to the WinRT QPA, allowing
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Qt-based UWP applications to operate with accessibility and
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programmatic UI control tools.
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****************************************************************************
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* X11 *
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****************************************************************************
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- [QTBUG-39624] The xcb plugin was ported to use libxcb-xinput instead of
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libXi for XInput2 support. The -xinput2 configure option was replaced by
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-xcb-xinput.
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