f0841085e7
Task-number: QTBUG-33135 Change-Id: I49c74fee0da738768a20735c4aac904f40322298 Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
169 lines
7.2 KiB
Plaintext
169 lines
7.2 KiB
Plaintext
Qt 5.2 introduces many new features and improvements as well as bugfixes
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over the 5.1.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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http://qt-project.org/doc/qt-5.2
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The Qt version 5.2 series is binary compatible with the 5.1.x series.
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Applications compiled for 5.1 will continue to run with 5.2.
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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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http://bugreports.qt-project.org/
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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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* Architecture Specific Changes *
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****************************************************************************
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Qt is now compiled with qreal typedef'ed to double on all platforms. qreal
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was a float on ARM chipsets before. This guarantees more consistent behavior
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between all platforms Qt supports, but is binary incompatible to Qt 5.1
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on ARM. The old behavior can be restored by passing -qreal float to
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configure.
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****************************************************************************
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* Library *
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****************************************************************************
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QtWidgets
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---------
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- QAbstractScrollArea now has a SizeAdjustPolicy. If it is set to AdjustToContents
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it will make use of the new protected viewportSizeHint() (binary compatible since it
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was reserved in Qt5). This function returns a suggested size based on contents.
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- QTreeView now has setTreePosition to allow the treestructure to show data from other
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columns than logicalindex zero.
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- [QTBUG-4206] QTableView resizeToContents will now adjust to actual contents
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and not just visible area. QHeaderView::setAutoResizePrecision() has been
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introduced to control how precise the autoResize should be.
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- QFileDialog::setDefaultSuffix() removes leading dot characters.
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- [QTBUG-34132] QFileDialog does not instantiate widgets if a native dialog
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will be used instead. Therefore some accessors which previously returned
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unused objects will now return null. As before, you can set the
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DontUseNativeDialog option to ensure that widgets will be created and used instead.
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- QSizePolicy got a retainSizeWhenHidden attribute.
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- [QTBUG-31602] QSpinBox size calculation will now be fixed when stylesheets are
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used.
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QtCore
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------
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- [QTBUG-30250] QTime, QDateTime:
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When calling QTime::toString(Qt::TextDate) and QTime::toString(Qt::ISODate),
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milliseconds are now included in the returned string. This also applies to
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QDateTime::toString(Qt::TextDate) and QDateTime::toString(ISODate).
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- QtAlgorithms
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With STL no longer being optional for building and using Qt, a number of parts
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of QtAlgorithms no longer make sense, and have therefore been deprecated.
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Replacements are available in the STL, and generally have much better
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performance, but are not instantly source-compatible in all cases. For
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instance, specialization of qLess or qSwap means that a direct port to
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std::sort from qSort may not be possible, as std::sort does not use any of
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them; a possible workaround is explicitly passing a qLess functor to
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std::sort:
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std::sort(container.begin(), container.end(), qLess<T>());
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The functions in QtAlgorithms that have been deprecated, along with their
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STL counterparts, are:
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- qBinaryFind (std::binary_search / std::lower_bound)
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- qCopy (std::copy)
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- qCopyBackward (std::copy_backward)
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- qEqual (std::equal)
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- qFill (std::fill)
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- qFind (std::find)
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- qCount (std::count)
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- qSort (std::sort)
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- qStableSort (std::stable_sort)
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- qLowerBound (std::lower_bound)
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- qUpperBound (std::upper_bound)
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- qLess (std::less)
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- qGreater (std::greater)
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QtGui
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-----
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- [QTBUG-28228] Session Management:
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The new QPlatformSessionManager class brings back the session management
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functionality. It allows the implementation of platform specific behavior
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related to session management. For platform that don't support this
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feature the default behavior has not changed.
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Both X11 and Windows session management are supported.
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QtNetwork
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---------
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- API was added to store and resume TLS session tickets.
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- The minimum support openssl version has been increased to openssl 1.0. The
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code to support older versions has not been removed, but is no longer
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supported.
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- An off-by-one error in NTLM proxy authentication has been fixed.
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- Various improvements to reduce the memory used by qtnetwork have been made.
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- Improved support for HTTP proxy authentication.
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- Support for preconnecting to servers before making HTTP and HTTPS
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connections. This allows for much reduced latency when the hosts to be
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connected to are known.
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QtSql
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-----
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Changes in Qt 5.1.0 (missing from released changelog dist/changes-5.1.0)
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- [QTBUG-28088] Remove dependency of DB driver headers on qsqlcachedresult_p.h.
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- Deprecate QSqlError setters.
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The constructor is sufficient, since it has a parameter for each member variable.
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- Rename the SQL driver header files to _p.h (make private)
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The drivers were never public API. They were exposed by mistake in
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public headers. What's more, they have #include'd a private header
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(qsqlcachedresult_p.h) since at least Qt 4.5.1. That means no one used
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those headers in Qt 4 (private headers weren't installed then) and
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it's unlikely anyone did in 5.0.
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- ODBC: Implemented lastInsertId() for some ODBC compatible databases.
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- PSQL: Make lastInsertID work for tables without OIDs.
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- [QTBUG-14904] SQLITE: Fix for Sql query aliases with dots
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- [QTBUG-2192] ODBC: fix loss of milliseconds when binding QDateTime
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- [QTBUG-30076] PSQL: escape backslashes only when server requires it
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IMPORTANT: Applications that implemented their own workarounds must be
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updated to avoid misbehavior and SQL injection vulnerabilities.
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- [QTBUG-10569] ODBC: fixed QODBCResult::exec() return value for DELETE
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operations when no rows are affected.
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- ODBC: Fixed loss of column metadata on SQL_NO_DATA.
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- QSqlTableModel: expose methods for getting primary values.
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- ODBC: Fixed possible cause of spurious errors (commit af35ee291a1bbbc8)
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Changes in Qt 5.2.0
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- [QTBUG-29261] IBASE: Construct a valid QTime when creating timestamps for iBase SQL driver.
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- [QTBUG-33389] PSQL: Format QDateTime following ISO8601.
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- Add QSQLITE_OPEN_URI option to QSQLITE driver
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****************************************************************************
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* Platform Specific Changes *
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****************************************************************************
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Qt for Android
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--------------
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- Project structure and deployment has changed with the introduction of
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androiddeployqt. Source and build files are no longer mixed, and the
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build files for the APK package should not be touched. Customizing
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the build files is possible. Read the documentation for androiddeployqt
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for more information.
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- Status bar visibility is now controlled by Qt, so the window state will
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override settings in the AndroidManifest.xml. The default is still to
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show the status bar (QWindow::showMaximized()). Use
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QWindow::showFullScreen() to hide it.
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