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authorAntti Kokko <antti.kokko@theqtcompany.com>2016-05-31 08:23:05 +0300
committerJani Heikkinen <jani.heikkinen@qt.io>2016-06-10 06:48:56 +0000
commit6c1e352803a6efbd8b14e5296434e22165b65084 (patch)
tree6e58aef95eddf7c3b35b4c37f0580a0ab61eda4b
parente454e986d57bacbc895cc4f476d2b100b782936c (diff)
Add Qt 5.7.0 changelogv5.7.0
Done-With: Oswald Buddenhagen <oswald.buddenhagen@qt.io> Done-With: Thiago Macieira <thiago.macieira@intel.com> Change-Id: I1e8d75afa4e26bac1e5f64b7a25320f80b54aa58 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io> Reviewed-by: Kai Koehne <kai.koehne@qt.io>
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+Qt 5.7 introduces many new features and improvements along with bug fixes
+over the 5.6.x series. Also, there is a change in the licensing terms.
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
+
+ http://doc.qt.io/qt-5.7
+
+The Qt version 5.7 series is binary compatible with the 5.6.x series.
+Applications compiled for 5.6 will continue to run with 5.7.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+ http://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+This release contains all fixes included in the Qt 5.6.1 release.
+
+****************************************************************************
+* Important License Changes *
+****************************************************************************
+
+ - Qt is no longer available under LGPLv2.1. The libraries in this package
+ are now available under the following licenses:
+ * Commercial License
+ * GNU General Public License v2.0 (LICENSE.GPL2) and later
+ * GNU Lesser General Public License v3.0 (LICENSE.LGPL3)
+
+ Note that a few Qt Libraries (currently Qt Charts and Qt Data
+ Visualization) are available only under the Commercial License and GPL
+ version 3.
+
+ - Qt Tools are now available under the following licenses:
+ * Commercial License
+ * GNU General Public License 3.0 (LICENSE.GPL3) with exceptions
+ described in the Qt Company GPL Exception 1.0 (LICENSE.GPL3-EXCEPT)
+
+****************************************************************************
+* Important Behavior Changes *
+****************************************************************************
+
+ - Starting with Qt 5.7, Qt requires a C++11 compiler with support for
+ C++11 atomics. This affects user code too: Qt headers no longer compile
+ with a C++98 compiler. The minimum compiler versions for this release
+ are:
+ * GCC 4.7
+ * Clang 3.4 (found in XCode 5.1)
+ * Microsoft Visual Studio 2013
+ - Support for the following platforms was removed in this version:
+ * Apple OS X 10.7 (Lion)
+ * Microsoft Windows XP
+ * Microsoft Windows Vista
+ * Microsoft Windows Embedded Compact 7
+ * Microsoft Windows Embedded Compact 2013
+ - Support for DirectFB is no longer enabled by default, due to lack of
+ development in upstream. To re-enable the platform plugin, pass the
+ -directfb option to configure. If there is no renewed interest in this
+ platform, the support will be removed in Qt 5.8.
+ - Qt no longer ships any fonts.
+
+ - QtGui:
+ * [QTBUG-51962] When line height is specified in pixels, this is now
+ interpreted as the minimum line height rather than an absolute line
+ height to avoid overlaps. To get the old behavior, use the
+ -qt-line-height-type property in CSS and set it to "fixed".
+ * [QTBUG-46054] QFont::exactMatch() now returns false when the provided
+ typeface is an alias.
+
+ - QtWidgets:
+ * [QTBUG-21217] QLineEdit will now accept certain shortcut override
+ events even if it is read-only.
+
+ - configure & build system:
+ * Except on OS X, -system-harfbuzz is now the default.
+ * A few obsolete options with no effect are not recognized any more.
+
+****************************************************************************
+* Deprecation Notice *
+****************************************************************************
+
+ - The following platforms or toolchains are deprecated and will be
+ removed as of Qt 5.8:
+ * Apple OS X 10.8 (Mountain Lion)
+
+ Deprecated platforms and toolchains continue to work until removed.
+
+****************************************************************************
+* Library *
+****************************************************************************
+
+QtCore
+------
+
+ - [QTBUG-50548] Added qAsConst().
+ - Added qOverload() to select overloaded functions.
+ - Added qHash(std::pair), defined in <QHashFunctions>.
+ - Added qUtf16Printable().
+ - QLocale data updated to CLDR v29
+
+ - QDataStream:
+ * [QTBUG-44418] Added startTransaction(), commitTransaction(),
+ rollbackTransaction(), abortTransaction() functions to support read
+ transactions.
+
+ - QDebug:
+ * QDebug can now output std::vector, std::list, std::map, and
+ std::multimap.
+
+ - QFlags:
+ * [QTBUG-27100] Added setFlag method to set or unset a flag
+
+ - QHash/QSet:
+ * Added QHash::equal_range().
+ * Added erase(const_iterator).
+
+ - QIODevice:
+ * Added support for devices with multiple streams.
+ * [QTBUG-44418] Added startTransaction(), commitTransaction(),
+ rollbackTransaction(), isTransactionStarted() functions to support
+ read transactions.
+
+ - QJsonObject:
+ * Added value(), op[] const, find(), constFind(), contains() overloads
+ taking QLatin1String.
+
+ - QLocale:
+ * Added special value for double conversion precision to get shortest
+ accurate representation.
+ * Added additional flags in QLocale::NumberOption that allow generating
+ and parsing doubles in EcmaScript compliant format.
+ * [QTBUG-46595] Added an overload for toCurrencyString() that allows the
+ decimal precision to be specified.
+
+ - QMutex:
+ * Made the isRecursive() method be a const function so that it can be
+ called in const QMutex objects too.
+
+ - QObject:
+ * [QTBUG-52542] If the compiler supports variadic templates, functors
+ connected to signals will not be copied any more each time the signal is
+ emitted. This is the behavior that was exhibited with C++98 compilers.
+
+ - QReadWriteLock:
+ * Optimized QReadWriteLock to be faster and take less memory.
+
+ - QRect:
+ * Fixed integer overflow in center(). This fixes the result for some
+ corner-cases like a 1x1 rectangle at (INT_MIN, INT_MIN), for which the
+ previous implementation could return anything (due to invoking
+ undefined behavior), but commonly returned (0, 0).
+
+ - QRect/QRectF:
+ * Added transposed().
+
+ - QSharedPointer:
+ * Added support for debug printing via QDebug.
+
+ - QStorageInfo:
+ * [QTBUG-49498] Fixed a bug that caused QStorageInfo to report
+ information for the wrong filesystem if there is a mounted filesystem
+ at a path that is a prefix of the requested path (e.g., it would
+ report "/usr" filesystem for "/usrfoo").
+
+ - QString:
+ * Added resize(int, QChar) overload.
+
+ - QStringRef:
+ * Added subscript operator.
+ * Fixed relational operators against (const char*) to return the correct
+ result.
+ * Added reverse iterators, rbegin(), rend(), crbegin(), crend().
+
+ - QUuid:
+ * Added Objective-C NSUUID/CFUUIDRef converters.
+
+ - QVariant:
+ * [QTBUG-53384] Fixed QVariant::canConvert and conversion from integer
+ types to enumeration types.
+
+ - QVector:
+ * clear() now preserves capacity. To shed capacity, call squeeze() or
+ swap with a default-constructed QVector object, see the documentation
+ for an example.
+
+ - State Machine:
+ * Added constructor overload that takes a pointer-to-member for the
+ QSignalTransition.
+
+QtDBus
+------
+
+ - QDBusArgument:
+ * [QTBUG-53376] Deprecated relying on a streamable Base to stream a
+ Derived without providing operator<</>>() for Derived. No diagnostic
+ provided. Support will be removed in Qt 5.8.
+
+QtGui
+-----
+
+ - QWheelEvent::phase() now returns NoScrollPhase with non-phase-aware mice.
+ This is most mice and input devices except, for now, Apple's trackpads
+ and Magic Mouse. It is no longer necessary to set the
+ QT_ENABLE_MOUSE_WHEEL_TRACKING environment variable to enable the fix for
+ QTBUG-50199.
+ - [QTBUG-35972] Added QWheelEvent::inverted() to enable detection of the
+ "natural scrolling" system setting. This feature currently only works on
+ OS X, though support for other operating systems is planned.
+
+ - Image:
+ * [QTBUG-50745] Fixed possible crash in QImage::pixel() for mono or
+ indexed images.
+
+ - QIcon:
+ * Split fromTheme() in two different overloads, one of which will only
+ lazily lookup the icons, in order to speed up startup of applications
+ that initialize many icons that are not necessarily visible.
+ * fromTheme gained the ability to use the GTK icon cache to speed up
+ lookups.
+
+ - QPixmapCache:
+ * Added QPixmapCache::Key::isValid().
+
+ - QRawFont:
+ * Fixed kerning on advances in QRawFont for OS X and Windows.
+
+ - Tablet support:
+ * [QTBUG-47007][QTBUG-51618] A synthetic mouse event will no longer be
+ sent after every QTabletEvent, only after those which are not accepted
+ (as documented).
+
+ - Text:
+ * [QTBUG-35156] Added support for color font rendering with Freetype.
+ * [QTBUG-52048] Added QTextOption::ShowDocumentTerminator flag.
+
+QtNetwork
+---------
+
+ - QAuthenticator:
+ * [QTBUG-53338] Fixed crash when comparing a initialized QAuthenticator
+ with an uninitialized QAuthenticator.
+
+QtWidgets
+---------
+
+ - Moved QGtkStyle to the qtstyleplugins repository.
+ - [QTBUG-37580] Added the Qt::AA_UseStyleSheetPropagationInWidgetStyles
+ attribute which enables font and palette propagation for Qt Style
+ Sheets.
+ - [QTBUG-48138] QPinchGesture on OS X now behaves like on other platforms:
+ totalScaleFactor is the magnitude of the pinch and scaleFactor is the
+ delta for the current event.
+
+ - Item Views:
+ * [QTBUG-50102] Item views scroll per pixel on OS X now.
+ * [QTBUG-50102] QAbstractItemView::verticalScrollMode and
+ QAbstractItemView::horizontalScrollMode are now resettable.
+
+ - QAbstractItemView:
+ * [QTBUG-7232] In ItemViews when scrollMode is set to scrollPerPixel, it
+ is now possible to change the single step. Qt will automatically adjust
+ the single step until setSingleStep is called. When setSingleStep is
+ called it will however respect that and stop doing automatic changes
+ of the value. Calling setSingleStep(-1) will switch mode back to
+ automatic adjusting.
+
+ - QAbstractScrollArea, QTextEdit, QPlainTextEdit:
+ * [QTBUG-52559] Changed focus to Qt::StrongFocus. That respects
+ platforms' native guidelines.
+
+ - QHeaderView:
+ * [QTBUG-39010] Fixed some issues with restoring of section size after a
+ section is no longer the last visible section (in stretchLastSection
+ mode).
+ * [QTBUG-50171] Fixed a repainting issue when items had been reordered.
+
+ - QListWidget:
+ * [QTBUG-15741] Fixed a bug that caused the default drop action to be
+ ignored when using icon mode.
+
+ - QTableView:
+ * [QTBUG-50171] Fixed a selection bug when rows or columns were hidden.
+
+ - Styles:
+ * [QTBUG-50102] Added SH_ItemView_ScrollMode style hint.
+
+ - Dialogs:
+ * [QTBUG-51148] Fixed requesting a font from font dialog with a
+ non-existent family name and/or pixel size when using GTK2 platform
+ theme.
+
+QTest
+-----
+
+ - Added a new logging mode that allow test-results to be parsed on-the-fly
+ when using Jetbrains TeamCity as CI-server. This mode is enabled by
+ using the -teamcity option on the command-line.
+
+****************************************************************************
+* Platform-specific Changes *
+****************************************************************************
+
+ - The Gtk+ platform theme has been ported to Gtk+ 3.
+ - Dropped support for Windows CE.
+ - Added support for INTEGRITY RTOS.
+
+Android
+-------
+
+ - Support for Android API < 16 was removed.
+ - [QTBUG-37221] Qt can now be used to easily create Android Services.
+ - Allow the user to choose how much from the Android theme is extracted.
+
+iOS
+---
+
+ - [QTBUG-35271] QBackingStore now uses the raster paint engine instead of
+ the OpenGL paint engine, enabling improved antialiased drawing. In case
+ of performance regressions, the old code path can be enabled by setting
+ the window's surface type to QSurface::OpenGLSurface.
+
+OS X
+----
+
+ - Support for OS X < 10.8 was removed.
+ - [QTBUG-7000] QMacPrintEngine now really sets the printer resolution.
+ - [QTBUG-32898] OS X now accepts trusted certificates from the login and
+ system keychains.
+ - [QTBUG-48953] Pasting text from Qt applications to Apple Mail now works.
+ - [QTBUG-48953] "text/vcard" is now required as the mime type when
+ placing vCards on the clipboard.
+ - [QTBUG-50262] QStandardPaths now returns the correct display name for
+ the download folder.
+
+Windows
+-------
+
+ - [QTBUG-390][QTBUG-6917][QTBUG-9350][QTBUG-24619] Added method
+ QProcess::setCreateProcessArgumentsModifier() to enable users to
+ intercept and modify CreateProcess parameters.
+ - Added support for color fonts (color emojis) when DirectWrite 2 is
+ available.
+
+ - Text:
+ * [QTBUG-47141] Made it possible to disable antialiasing for text when
+ drawing into images.
+ * [QTBUG-18711] Fixed disabling hinting for application fonts, e.g. when
+ automatic scaling by device pixel ratio is in effect.
+
+XCB / X11
+---------
+
+ - [QTBUG-44964] It's now possible to unset AA_CompressHighFrequencyEvents
+ to disable the new X event compression feature that was added in 5.6.0.
+ This is a replacement for the WA_NoX11EventCompression flag in Qt 4.
+ - [QTBUG-49071] Fixed failure to deliver focusIn event on hide/show with XCB
+ - QMenuBar now uses the unified D-Bus AppMenu menubar when the desktop
+ environment supports it.
+
+****************************************************************************
+* Tools *
+****************************************************************************
+
+moc
+---
+
+ - [QTBUG-53441] Fixed crash when processing files ending with \\\r.
+
+configure & build system
+------------------------
+
+ - [QTBUG-35754] Static builds now embed QML resources into the libraries
+ to make them self-contained.
+ - [QTBUG-35886][Unix] Made it explicit that -fontconfig implies
+ -system-freetype.
+ - [QTBUG-43784][Unix] Fixed GLX not being enabled with -qt-xcb.
+ - [QTBUG-45291][GCC] Enabled use of Qt with -Wzero-as-null-pointer-constant.
+ - [Android@Windows] Fixed configure tests outside QtBase.
+ - [Unix] Fixed config.log corruption with option -v.
+ - [Unix] Fixed the MySQL configure test on RHEL 6.6.
+ - [Android] Enabled building with newer SDKs than the minimal supported one.
+ - QNX and Android builds on Windows use -system-zlib now.
+ - Added support for "Canadian Cross Builds"; options -external-hostbindir
+ and -host-option.
+ - Added makespecs for DRIVE CX (Tegra X1), NVIDIA Jetson TK1, and i.MX7
+ boards.
+ - Qt now makes use of AVX512 instructions on Intel platforms.
+
+qmake
+-----
+
+ - Specifying directories in RESOURCES now actually works.
+ - Added -qtconf option to make it possible to use the same qmake binary
+ with several builds of Qt.