* Source incompatible changes *
****************************************************************************
+- QAtomicInt's and QAtomicPointer's non-atomic convenience methods
+ (i.e., operator=, operator int / operator T*, operator!, operator==,
+ operator!= and operator->) have been removed as they did implicit
+ loads and stores of unspecified memory ordering. Code dealing with
+ is expected to use load(), loadAquire(), store() and storeRelease()
+ as necessary instead.
- QObject
* The signatures of the connectNotify() and disconnectNotify() functions
- QCoreApplication::translate() will no longer return the source text when
the translation is empty. Use lrelease -removeidentical for optimization.
+- QTranslator subclasses need to adjust the signature of the virtual method
+ translate() in order to add the "int n = -1" argument.
+
- QString and QByteArray constructors that take a size argument will now treat
negative sizes to indicate nul-terminated strings (a nul-terminated array of
QChar, in the case of QString). In Qt 4, negative sizes were ignored and
in Qt4, so these methods return a bool now. If your code used the undocumented
QBool, simply replace it with bool.
+- The old macros TRUE and FALSE have been removed, use true and false instead.
+
- qIsDetached<> has been removed without replacement.
+- The return type of QFlags<Enum>::operator int() now matches the Enum's underlying
+ type in signedness instead of always being 'int'. This was done in order to allow
+ QFlags over enums whose underlying type is unsigned (Qt::MouseButton is one such
+ enum).
+
- QMetaType:
* QMetaType::construct() has been renamed to QMetaType::create().
* QMetaType::unregisterType() has been removed.
+ * QMetaType now records if the type argument inherits QObject. This
+ can be used in scripting APIs, so that custom QObject subclasses
+ are treated as QObject pointers. In QtScript for example, this can
+ mean that QScriptValue.isQObject can be true where it was false before.
+ * QMetaType::QWidgetStar has been removed. Use qMetaTypeId<QWidget*>()
+ or QVariant::canConvert<QWidget*>() as appropriate.
- QMetaMethod:
* QMetaMethod::signature() has been renamed to QMetaMethod::methodSignature(),
instance was removed. Code constructing such variants can be migrated by
explicitly calling QColor constructor. For example from "QVariant(Qt::red)"
to "QVariant(QColor(Qt::red))"
+ * Similarly, implicit creation of QVariants from enum values Qt::BrushStyle,
+ Qt::PenStyle, and Qt::CursorShape have been removed. Create objects explicitly
+ or use static_cast<int>(Qt::SolidLine) to create a QVariant of type int with
+ the same value as the enum.
+
+- QLocale:
+ * The historical language and country names were updated to their modern values,
+ some deprecated names were dropped or mapped to their modern alternatives.
- QTestLib:
* The plain-text, xml and lightxml test output formats have been changed to
like SkipSingle -- skipping a non-data-driven test function or skipping
only the current data row of a data-driven test function. Every skipped
data row is now reported in the test log.
+ * The qCompare() function template was both overloaded and specialised, which
+ made it almost impossible to specialise the correct primary template and
+ could lead to indecipherable error messages or surprising overload resolution
+ (such as going via qCompare(QFlags<void*>,int) to satisfy a request for
+ qCompare<void*>()). Now, specialisation has been replaced by overloading.
+ As a consquence, code such as qCompare<QString>(l, r) will no longer use the
+ QString-specific implementation and may fail to compile. We recommend you
+ replace specialisations with overloading, too. Also, don't pass explicit
+ template arguments to qCompare (e.g. qCompare<QString>(l, r)), but let
+ overload resolution pick the correct one, and cast arguments in case of
+ ambiguous overloads (e.g. qCompare(QString(l), r)). The resulting code will
+ continue to work against older QtTestlib versions.
- The QSsl::TlsV1 enum value was renamed to QSsl::TlsV1_0 .
* Q_DECLARE_METATYPE(Foo*) now requires that Foo is fully defined. In
cases where a forward declared type should be used as a metatype,
Q_DECLARE_OPAQUE_POINTER(Foo*) can be used to allow that.
+ * Similarly, Q_DECLARE_METATYPE(QSharedPointer<Foo>), and
+ Q_DECLARE_METATYPE(QWeakPointer<Foo>) require Foo to be fully defined. Again
+ though, Q_DECLARE_OPAQUE_POINTER(Foo*) can be used to allow that.
- QItemEditorFactory
* The signature of the createEditor and valuePropertyName methods
have been changed to take arguments of type int instead of QVariant::Type.
+- QModelIndex/QAbstractItemModel
+
+ * The integer value that can be stored in a QModelIndex is now of type
+ quintptr to match the size of the internal storage location.
+ * The createIndex() method now only provides the void* and quintptr
+ overloads, making calls with a literal 0 (createIndex(row, col, 0))
+ ambiguous. Either cast (quintptr(0)) or omit the third argument
+ (to get the void* overload).
+
- QWindowSystemInterface:
* The signature of all handleTouchEvent() variants have changed,
- The QHttp, QHttpHeader, QHttpResponseHeader and QHttpRequestHeader classes have
been removed, QNetworkAccessManager should be used instead.
-- The QFtp class is no longer exported, QNetworkAccessManager should be used
- instead.
+- The QFtp and QUrlInfo classes are no longer exported, QNetworkAccessManager should be used
+ instead. These classes are available in a separate module, qtftp.
- QProcess
QColorDialog::setCustomColor() and QColorDialog::setStandardColor() now
take a QColor value for their second parameter instead of QRgb.
+- QPageSetupDialog has had the PageSetupDialogOption enum and the api to
+ set and get the enum removed as none of the Options are used any more.
+
+- QAbstractPageSetupDialog has been removed.
+
+- QThread::terminated() has been removed, since its emission cannot be guaranteed.
+
+- QPrintEngine - Removed the PPK_SuppressSystemPrintStatus key as no longer used.
+
+- QCoreApplication::Type and QApplication::type() have been removed. These
+ Qt3 legacy application types did not match the application types
+ available in Qt5. Use for example qobject_cast instead to dynamically
+ find out the exact application type.
+
+- The following QStyle implementations have been made internal:
+ * QFusionStyle
+ * QGtkStyle
+ * QMacStyle
+ * QWindowsCEStyle
+ * QWindowsMobileStyle
+ * QWindowsStyle
+ * QWindowsVistaStyle
+ * QWindowsXPStyle
+ Instead of creating instances or inheriting these classes directly, use:
+ * QStyleFactory for creating instances of specific styles
+ * QProxyStyle for customizing existing style implementations
+ * QCommonStyle as a base for implementing full custom styles.
+
****************************************************************************
* General *
****************************************************************************
more closely match the directory structure of the code under test.
Integration tests have been moved to tests/auto/integrationtests.
+- Qt is compiled with C++11 support enabled by default, provided the compiler
+ supports C++11. Qmake based projects can enable C++11 support explicitly
+ using 'CONFIG+=c++11' in their .pro files. To enable it conditionally, use
+ 'contains(QT_CONFIG,c++11):CONFIG+=c++11'. This will enable C++11 support
+ only if Qt was built with C++11 support.
+
+- The Unicode Data and Algorithms has been updated to match the
+ Unicode Standard of version 6.2. For more information see http://www.unicode.org/
+
+- The QLocale data has been updated to CLDR 22.1.
+ For more information see http://cldr.unicode.org/
+
Third party components
----------------------
flags are now enabled by default on all platforms, for the sqlite3 copy under
the 3rdparty directory.
+Legal
+-----
+
+ - Copyright of Qt has been transferred to Digia Plc.
****************************************************************************
* Library *
QtCore
------
-* drop a bogus QChar::NoCategory enum value; the proper QChar::Other_NotAssigned
+* [QTBUG-12144], [QTBUG-18360] The QChar methods are now able to handle the full range
+ of Unicode codepoints defined by the Unicode Standard of version 6.2.
+ QChar::isPrint() will no longer return a false positives for
+ the Unicode format characters, surrogates, and private use characters.
+
+* Drop a bogus QChar::NoCategory enum value; the proper QChar::Other_NotAssigned
value is returned for an unassigned codepoints now.
* layoutAboutToBeChanged is no longer emitted by QAbstractItemModel::beginMoveRows.
should now also connect to (and disconnect from) the rowsAboutToBeMoved and
rowsMoved signals.
+* The QAbstractItemModel::sibling method was made virtual, allowing implementations
+ to optimize based on internal data.
+
* The default value of the property QSortFilterProxyModel::dynamicSortFilter was
changed from false to true.
* QEvent::AccessibilityPrepare, AccessibilityHelp and AccessibilityDescription removed:
* The enum values simply didn't make sense in the first place and should simply be dropped.
+* Filtering of native events (QCoreApplication::setEventFilter, as well as
+ QApplication::x11EventFilter/macEventFilter/qwsEventFilter/winEventFilter) have been replaced
+ with QCoreApplication::installNativeEventFilter and removeNativeEventFilter,
+ for an API much closer to QEvent filtering. Note that the native events that can be
+ filtered this way depend on which QPA backend is chosen, at runtime. On X11, XEvents are
+ not used anymore, and have been replaced with xcb_generic_event_t due to the switch to
+ XCB, which requires porting the application code to XCB as well.
+
* [QTBUG-23529] QHash is now more resilient to a family of denial of service
attacks exploiting algorithmic complexity, by supporting two-arguments overloads
of the qHash() hashing function.
+* [QTBUG-4844] QObject::disconnectNotify() is now called when a receiver is destroyed.
+
+* QStateMachine
+ - [QTBUG-15430] Added a QStateMachine constructor that takes a ChildMode parameter.
+ - [QTBUG-17975] Delayed event posting now works from secondary threads.
+ - [QTBUG-19789] Signal transitions now work correctly when the sender is in a different thread.
+ - [QTBUG-20362] Property assignments now work as expected with nested, parallel states.
+ - [QTBUG-22931] The root state can now be a parallel state group.
+ - [QTBUG-24307] The initial state is now entered before the started() signal is emitted.
+ - [QTBUG-25959] State entry and exit order is now SCXML spec-compliant.
+
+* qDebug(), qWarning(), qCritical(), and qFatal() were changed to macros that track the origin
+ of the message in source code. Whether this and other meta-information is printed can be
+ configured (for the default message handler) by setting the new QT_MESSAGE_PATTERN environment
+ variable. qInstallMsgHandler() has been deprecated, and should be replaced with
+ qInstallMessageHandler().
+
+* QTextBoundaryFinder
+ - [QTBUG-6498] The word start and word end boundaries detection is now
+ unaware of surrounding white space characters.
+ - SoftHyphen enum value has been added to specify a line break opportunity
+ at a soft hyphen (SHY) character.
+ - MandatoryBreak enum value has been added to specify a mandatory (aka "hard") line breaks.
+ - Source-incompatible change: Since the behavior of boundaryReasons() method
+ has been changed a lot, StartWord/EndWord enum values were intentionally replaced
+ with StartOfItem/EndOfItem ones to force the affected code be revised.
+
+* Softkeys API was removed. The following functions and enums were removed:
+ - QAction::setSoftKeyRole()
+ - QAction::softKeyRole()
+ - QAction::SoftKeyRole
+ - Qt::WA_MergeSoftkeys
+ - Qt::WA_MergeSoftkeysRecursively
+ - Qt::WindowSoftkeysVisibleHint
+ - Qt::WindowSoftkeysRespondHint
+
+* QLocale
+ - [QTBUG-27987] Constructing a QLocale object with the short locale id has been improved.
+
+* QObject
+ - Added overloads of connect() to connect using pointers to member function
+ - Added QObject::isSignalConnected()
+
QtGui
-----
* Accessibility has been refactored. The hierachy of accessible objects is implemented via
* QOpenGLPaintDevice has been added to be able to use QPainter to render into
the currently bound context.
+* Behavioral change in QImage::fill() on an image with format Format_RGB888:
+ For consistency with RGB32 and other 32-bit formats, function now expects
+ image data in RGB layout as opposed to BGR layout.
+
+* Behavioral change in QImage and QPixmap load()/loadFromData() on a non-null image:
+ If load() or loadFromData() fails to load the image (returns false) then
+ the existent image data will be invalidated, so that isNull() is guaranteed
+ to return true in this case.
+
+* Behavioral change regarding QPainter fill rules when not using antialiased
+ painting: The fill rules have changed so that the aliased and antialiased
+ coordinate systems match. Earlier there used to be an offset of slightly less
+ than half a pixel when doing sub-pixel rendering, in order to be consistent
+ with the old X11 paint engine. The new behavior should be more predictable and
+ gives the same consistent rounding for images / pixmaps as for paths and
+ rectangle filling. It's possible to still get the old behavior by setting the
+ QPainter::Qt4CompatiblePainting render hint.
+
+* Behavioral change regarding QPen: The default QPen constructors now create a
+ 1-width non-cosmetic pen as opposed to a 0-width cosmetic pen. The old
+ behavior can be emulated by setting the QPainter::Qt4CompatiblePainting
+ render hint when painting.
+
QtWidgets
---------
+* A new style QFusionStyle has been introduced, while QPlastiqueStyle, QCleanlooksStyle,
+ QCDEStyle and QMotifStyle have been removed. The older styles will be
+ made available to applications as a standalone source package.
+
* QInputContext removed as well as related getters and setters on QWidget and QApplication.
Input contexts are now platform specific.
* QInputDialog::getInteger() has been obsoleted. Use QInputDialog::getInt() instead.
+* In Qt 4, QStyle::standardIconImplementation() and layoutSpacingImplementation()
+ were introduced instead of making the corresponding methods virtual due to binary
+ compatibility reasons. QStyle::standardIcon() and layoutSpacing() have been made
+ (pure) virtual in Qt 5.
+
* In Qt 4, many QStyleOption subclasses were introduced in order to keep
binary compatibility -- QStyleOption was designed to be extended this way,
in fact it embeds a version number. In Qt 5 the various QStyleOption*V{2,3,4}
the proper Qt API: due to the version bump, QStyle will try to use the additional
QStyleOption members, which are left default-initialized.
-* QHeaderView - The following functions have been obsoleted.
+* QHeaderView has been refactored and the following functions have been obsoleted:
* void setMovable(bool movable) - use void setSectionsMovable(bool movable) instead.
* ResizeMode resizeMode(int logicalindex) const -
use sectionResizeMode(int logicalindex) instead.
+ * setSortIndicator will no longer emit sortIndicatorChanged when the sort indicator is unchanged.
+
* QDateEdit and QTimeEdit have re-gained a USER property. These were originally removed
before Qt 4.7.0, and are re-added for 5.0. This means that the userProperty for
those classes are now QDate and QTime respectively, not QDateTime as they have been
for the 4.7 and 4.8 releases.
+* QGraphicsItem and derived classes - Passing a QGraphicsScene in the items constructor
+ is no longer supported. Construct the item without a scene and then call
+ QGraphicsScene::addItem() to add the item to the scene.
+
+* QAbstractItemView and derived classes only emit the clicked() signal on left click now,
+ instead of on all mouse clicks.
+
+* QProxyModel has been removed. It is deprecated since early Qt 4 versions and replaced
+ by QAbstractProxyModel and related classes. A copy of QProxyModel is available
+ in the UiHelpers library.
+
+* The virtual methods QApplication::commitData and QApplication::saveState, used for session
+ management, no longer exist.
+ Connect to the commitDataRequest and saveStateRequest signals instead.
+ The new isSessionSaving() method can be used in the cases where the closeEvent of your
+ window needs to know whether it is being called during shutdown.
+
+* [QTBUG-20503] QFileSystemModel no longer masks out write permissions from the permissions
+ returned from permissions() or data(FilePermissions), even if in read-only mode
+ (QFileSystemModel::isReadOnly()).
+
+* [QTBUG-158 QTBUG-428 QTBUG-26501] QComboBox::currentText improvements
+ Restored currentText as USER property.
+ New setter setCurrentText(), marked as WRITE method, usable by QItemDelegate and QDataWidgetMapper.
+ New signal currentTextChanged() marked as NOTIFY method.
+
QtNetwork
---------
* QHostAddress::isLoopback() API added. Returns true if the address is
* QtDBus error codes have been updated to be on the org.qtproject.QtDBus.Error
namespace.
+QtConcurrent
+------------
+
+* QtConcurrent is no longer in QtCore, but forms its own library now.
+ QMake-based projects can use
+ QT += concurrent
+ to include the new library.
+
+* QtConcurrent::Exception has been renamed to QException, and is still in QtCore.
+ Ditto QtConcurrent::UnhandledException.
+
QtOpenGL
--------
now have equivalents in QtGui, along with the naming change QGL -> QOpenGL.
The classes in QtOpenGL that have equivalents in QtGui can now be considered
deprecated.
+* QGLPixelBuffer is now deprecated and implemented in terms of a hidden
+ QGLWidget and a QOpenGLFramebufferObject. It is recommended that applications
+ using QGLPixelBuffer for offscreen rendering to a texture switch to using
+ QOpenGLFramebufferObject directly instead, for improved performance.
+* The default major version of QGLFormat has been changed to 2 to be aligned
+ with QSurfaceFormat. Applications that want to use a different version should
+ explicitly request it using QGLFormat::setVersion().
+* void QGLContext::generateFontDisplayLists(const QFont& font, int listBase)
+ and int QGLWidget::fontDisplayListBase(const QFont & fnt, int listBase)
+ which were deprecated in Qt 4 have been removed.
+* Previously deprecated default value listBase parameter has been removed from
+ both QGLWidget::renderText() functions.
+* In order to ensure support on more platforms, stricter requirements have been
+ introduced for doing threaded OpenGL. First, you must call makeCurrent() at
+ least once per swapBuffers() call, so that the platform has a chance to
+ synchronize resizes to the OpenGL surface. Second, before doing makeCurrent()
+ or swapBuffers() in a separate thread, you must call
+ QGLContext::moveToThread(QThread *) to explicitly let Qt know in which thread
+ a QGLContext is currently being used. You also need to make sure that the
+ context is not current in the current thread before moving it to a different
+ thread.
QtScript
--------
-
+* [QTBUG-2124] Added default conversion for long and unsigned long.
+* [QTBUG-6133] Fixed QScriptContextInfo::functionMetaIndex() for overloaded
+ slots.
+* [QTBUG-15213] Doc: Added missing properties to the ECMAScript reference.
+* [QTBUG-15956] Doc: Removed wrong information about Error .stack properties.
+* [QTBUG-17915] Fixed a crash when a JS property descriptor was only partially
+ defined.
+* [QTBUG-18188] Fixed a regression that caused contexts created by
+ QScriptEngine::pushContext() to inherit the parent context's scope.
+* [QTBUG-18201] Suppressed 'LEAK' messages on stderr at application exit.
+* [QTBUG-20378] Fixed QtScriptTools compilation when some features are disabled.
+* [QTBUG-20845] Fixed a precision bug in the calculator example.
+* [QTBUG-21548] Fixed a crash in QScriptEngineDebugger when the QScriptEngine
+ being debugged was deleted.
+* [QTBUG-21760] Fixed a crash when accessing QObject properties through an
+ activation object.
+* [QTBUG-21896] Fixed a crash when converting an invalid JS value to a string.
+* [QTBUG-21993] Fixed a bug that caused QObject wrapper objects created with
+ the PreferExistingWrapperObject option to not be garbage collected, even if
+ the object was not referenced anywhere in the scripting environment.
+* [QTBUG-22152] Fixed build issue on Solaris.
+* [QTBUG-23871] Fixed a JIT crash on x86-64 caused by out-of-range branch
+ instructions.
+* [QTBUG-26261] Fixed a crash when a queued signal handler no longer existed.
+* [QTBUG-26590] Fixed a bug that caused QObjects with script connections to
+ not be garbage collected as expected.
QTestLib
--------
* [QTBUG-20615] Autotests can now log test output to multiple destinations
and log formats simultaneously.
+* [QTBUG-21645] QSignalSpy now handles QVariant signal parameters more
+ intuitively; the QVariant value is copied directly, instead of being
+ wrapped inside a new QVariant. This means that calling
+ qvariant_cast<QVariant>() on the QSignalSpy item (to "unwrap" the value)
+ is no longer required (but still works).
QtSql
-----
removed and only if there are no other changed rows.
* setRecord() and insertRecord()
- -Only use fields where generated flag is set to true. This is
- is consistent with the meaning of the flag.
+ -The generated flags from the source record are preserved in the model
+ and determine which fields are included when changes are applied to
+ the database.
-Require all fields to map correctly. Previously fields that didn't
map were simply ignored.
-For OnManualSubmit, insertRecord() no longer leaves behind an empty
and modelReset() signals suffice to inform views that they must reinterrogate
the model.
-* QSqlTableModel::selectRow(): This is a new method that refreshes a single
+* QSqlTableModel::select() is now a slot.
+
+* QSqlTableModel::selectRow(): This is a new slot that refreshes a single
row in the model from the database.
* QSqlTableModel edit strategies OnFieldChange/OnRowChange QTBUG-2875
'true' and 'false'. Sqlite does not have a boolean column type and it is
customary to use integer. QTBUG-23895
+postgres
+--------
+* the error message returned in QSqlError::text() has the SQLSTATE error code
+appended in parantheses.
+
****************************************************************************
* Platform Specific Changes *
****************************************************************************
Qt for Windows
--------------
* Accessibility framework uses IAccessible2
-
+* ANGLE can be used to provide Open GL ES 2.0 (see http://code.google.com/p/angleproject/)
Qt for Mac OS X
---------------
* [QTBUG-20785] The moc now has a -b<file> option to #include an additional
file at the beginning of the generated file.
-
+* moc is now able to fully understand and expands preprocessor macros.
- uic
* Plugins *
****************************************************************************
- The text codecs that were previously plugins are now built into QtCore.
+- Code using Q_EXPORT_PLUGIN macros will no longer compile. Use
+ Q_PLUGIN_METADATA instead. Note that this requires that the class
+ be default-constructible.
****************************************************************************
* Important Behavior Changes *
projects / profile / ivi / qtbase.git / blobdiff