514 lines
19 KiB
Plaintext
514 lines
19 KiB
Plaintext
Qt 4.7 introduces many new features and improvements as well as bugfixes
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over the 4.6.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.nokia.com/doc/4.7
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The Qt version 4.7 series is binary compatible with the 4.6.x series.
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Applications compiled for 4.6 will continue to run with 4.7.
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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.nokia.com/
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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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* General *
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****************************************************************************
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General Improvements
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--------------------
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- Documentation and Examples
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- Support for the GL_EXT_geometry_shader4, aka Geometry Shaders, was added
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to QGLShaderProgram.
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New features
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------------
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- QNetworkSession, QNetworkConfiguration, QNetworkConfigurationManager
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* New bearer management classes added.
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- QStaticText class was added to support high-performance output of
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seldomly altered text.
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Third party components
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----------------------
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- Updated libpng to version 1.4.0
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- Updated libjpeg to version 8
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- Updated libtiff to version 3.9.2
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****************************************************************************
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* Library *
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****************************************************************************
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QtCore
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------
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- QString
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* Added QString(const QChar *) constructor.
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NOTE: This is source-incompatible for the bogus QString(0) case.
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* Removed internal but exported qt_winQString2MB() and qt_winMB2QString()
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* Added setRawData() function (also revived the one in QByteArray)
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* Various performance improvements
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- QList
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* Added reserve() function
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* Various performance improvements
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- QMetaType
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* Significantly improved performance of the type() function
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* [QTBUG-8235] Support QEasingCurve as a built in metatype.
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* Added possibility to register several name for the same type with
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qRegisterMetaType<>() (ie. for typedef)
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- QState
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* [QTBUG-7741] Added a function to get the out-going transitions
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- QXmlStreamReader
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* [QTBUG-9196] fixed crash when parsing
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- QTimer
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* singleShot with 0 timeout will now avoid allocating objects
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- QAbstractAnimation
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* [QTBUG-10654] Avoids animation with loopCount == 0 to change state
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to running and stopped.
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- QVarLenghtArray
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* Added some API to be more consistant with other containers
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QtGui
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-----
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- QAbstractItemView
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* Fixed a bug that would cause keyboard searches not to behave
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properly when used within 400 milliseconds of midnight.
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- QComboBox
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* [QTBUG-8796] Made ForegroundRole work for all styles.
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- QCommandLinkButton
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* [QTBUG-5995] Fixed text and icon alignment issues.
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- QPrinter
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* Obsoleted the slightly confusing setNumCopies() and numCopies()
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functions, and replaced them with setCopyCount(), copyCount() and
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supportsMultipleCopies().
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- QPrintDialog/QPrinter
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* Added support for printing the current page.
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- QCommonStyle
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* Fixed a bug that led to missing text pixels in QTabBar when using
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small font sizes. (QTBUG-7137)
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- QGraphicsEffect
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* Fixed rendering bugs when scrolling graphics items with drop
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shadows.
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- QGraphicsItem
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* [QTBUG-8112] itemChange() is now called when transformation
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properties change (setRotation, setScale, setTransformOriginPoint).
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* [QTBUG-9024] Improved performance when calling update() on items that
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are clipped by an ancestor (QGraphicsItem::ItemClipsChildrenToShape).
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* [QTBUG-7703], [QTBUG-8378] Fixed scrolling issues
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* [QTBUG-12112] Fixed focusItem() returning incorrect value.
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- QGraphicsTextItem
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* [QTBUG-7333] Fixed keyboard shortcuts not being triggered when the
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the item has focus and something else has the same shortcut sequence.
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* [QTBUG-10574] Fixed crash when flag "QGraphicsItem::ItemIgnoresTransformations"
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is set.
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- QGraphicsView
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* [QTBUG-7438] Fixed viewport cursor getting reset when releasing
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the mouse.
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* [QTBUG-10338] Fixed drawing artifacts due to rounding errors.
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- QGraphicsWidget
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* [QTBUG-12056] Fixed a crash occuring when adding a QGraphicsWidget
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to a scene after removing and deleting another QGraphicsWidget.
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- QImage
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* [QTBUG-9640] Prevented unneccessary copy in QImage::setAlphaChannel().
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* [QTBUG-7982] Added QImage::bitPlaneCount().
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* [QTBUG-9072] Fixed alpha check for 1-bit-per-pixel images.
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- QLineEdit
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* [QTBUG-9823] Placeholder text is now correctly aligned with text.
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- QPicture
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* [QTBUG-4974] Printing QPictures containing text to a high resolution
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QPrinter would in many cases cause incorrect character spacing.
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- QPainter
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* Added QPainter::drawPixmapFragments(), which makes it possible to draw
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pixmaps, or sub-rectangles of pixmaps, at various positions with
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different scale, opacity and rotation.
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* [QTBUG-10018] Fixed image drawing inconsistencies when drawing
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1x1 source rects with rotating / shear / perspective transforms.
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* Optimized various blending and rendering operations for ARM
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processors with a NEON vector unit.
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* Fixed some performance issues when drawing sub-pixmaps of large
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pixmaps and falling back to raster in the X11 paint engine.
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* [QTBUG-7596] Safeguard ourselves against corrupt registry values for
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ClearType gamma on Windows.
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* [QTBUG-9218] Fixed flattening of largely scaled, thin, dashed beziers.
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* [QTBUG-9437] Fixed crash in the raster paint engine when drawing largely
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scaled images.
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- QPainterPath
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* [QTBUG-3778] Fixed bug in painter path polygon intersection code.
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* [QTBUG-7396] Optimized painter path intersections for when at
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least one of the paths is a rectangle by special casing.
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* [QTBUG-8035] Got rid of bezier intersection code in the boolean
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operators (intersect, subtract, unite) to prevent numerical
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stability issues.
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* [QTBUG-11291] Fixed infinite recursion when drawing very large painter
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paths.
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- QPixmap
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* [QTBUG-4149] Fixed QPixmap::grabWidget() on widgets that have not yet
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been shown.
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- QPlastiqueStyle
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* [QTBUG-6516] Respect AlternateBase role for list views.
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- QRegion
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* [QTBUG-7699] Fixed crash caused by large x-coordinates.
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- QSplitter
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* [QTBUG-9335] Improve support for 1-pixel splitters by using a
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larger drag area.
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- QTextDocumentWriter
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* Fixed tab-stops and table padding in ODF export.
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- QTextLayout
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* [QTBUG-11427] Fix possible crash in QTextLayout for glyphless
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items.
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* [QTBUG-8864] Fix regression in right alignment of text with
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negative right bearing.
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- QTransform
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* [QTBUG-8557] Fixed bug in QTransform::type() potentially occuring
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after using operator/ or operator* or their overloads.
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QtOpenGL
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--------
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- Improve performance of text by adding special cased fragment shader.
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- Made width and height of glyph cache power-of-two for performance
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improvements on some hardware.
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- [QTBUG-9706] Improved appearance of text antialiasing.
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- QTreeView
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* Optimized
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QtNetwork
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---------
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- QHostInfo: Added a small 60 second DNS cache
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- QNetworkAccessManager
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* Performance improvements for file:// and http://
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* Crash fixes
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* Improvements on HTTP pipelining
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* Fix problem with canReadLine()
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* Fix problem with HTTP 100 reply
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* Some new attributes for QNetworkRequest
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* [QTBUG-8206] add method to send custom requests
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* [QTBUG-9618] [MR 2372] send secure cookies only over secure connections
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* [QTBUG-7713] Fix bug related to re-sending request
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* [QTBUG-7673] Fix issue with some webservers
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* [QTBUG-11029] do not accept cookies with non-alpha-numerical domain
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- Sockets
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* Better support for derived QTcpServer
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* [QTBUG-7054] Fix error handling with waitFor*() for socket engine
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* [QTBUG-7316, QTBUG-7317] Also handle unknown errors from socket engine
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- SSL
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* [QTBUG-2515] Do not make OpenSSL prompt for a password
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* [QTBUG-6504, QTBUG-8924, QTBUG-5645] Fix memleak
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* [QTBUG-9973] QSslCertificate: support large serial numbers
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* [QTBUG-8833] make QSslSocket::systemCaCertificates() use system certs
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* [QT-3567] QSslSocket: improve error handling (fixes Secunia Advisory SA40389)
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* [QBTUG-4455, MR 731] Fix handling of SSL certificates with wildcard domain names
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QtScript
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--------
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- Updated src/3rdparty/javascriptcore to a more recent version
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- Significantly improved performance of the Qt/C++<-->JavaScript bridge
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- QScriptValueIterator: Significantly improved performance
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- [QTBUG-3637] Added a wrap option for excluding slots from a QObject binding
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- [QTBUG-6238] Added a function for reporting additional memory cost
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- [QTBUG-6908] Significantly improved performance of qsTr()
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QtSvg
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-----
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- QSvgRenderer
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* [QTBUG-8264] Fixed rounded rectangles when 'rx' or 'ry' is zero.
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* [QTBUG-10022] Fixed assert failure when loading an invalid SVG.
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QtXmlPatterns
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-------------
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- [QTBUG-8920] fixed crash with anonymous types in XsdSchemaChecker
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- [QTBUG-8394] include/import/redefine schemas only once
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- QXmlSchema: fix crash with referencing elements
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- [QBTUG-6485] QXmlSchema: allow usage of xsd:all
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Qt Plugins
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----------
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- Jpeg image IO plugin
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* Fixed failure to store certain QImage formats as jpeg (QTBUG-7780)
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* Optimized smoothscaling
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* Optimized to avoid data copy when reading from memory device (QTBUG-9095)
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- SVG image IO plugin
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* Added support for svgz format (QTBUG-8227)
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* Fixed canRead() so that it can be used also for non-sequential
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devices. (QTBUG-9053)
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* Added support for clipping and scaling and backgroundcolor
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* Optimized to avoid data copy when reading from memory device (QTBUG-9095)
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****************************************************************************
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* Database Drivers *
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****************************************************************************
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- Sqlite
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* [QTBUG-11904] Pointer aliasing problem in sqlite
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- OCI
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* [QTBUG-10919] Unable to insert unicode chars with codepoint > 255
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in nvarchar2 column on oracle
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* [QTBUG-8210] Oracle - DATE in db with a year greater or equal to 2800
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returns an invalid date
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****************************************************************************
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* Platform Specific Changes *
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****************************************************************************
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Qt for Linux/X11
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----------------
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- QGtkStyle
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* Fixed rtl issues with sliders (QTBUG-8986)
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* Fixed missing pressed appearance on scroll bar handles. (QTBUG-10396)
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* Fixed crash when creating QGtkStyle before QApplication. (QTBUG-10758)
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- QFontDatabase
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* [QTBUG-4428] Fixed regression when using bitmap fonts on some
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Linux systems.
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- QFontEngine
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* [QTBUG-9442] Avoid possible square root of negative number in
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FreeType font engine.
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- QFontMetrics
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* [QTBUG-10448] Fix crash when using fonts in non-gui QApplication.
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Qt for Windows
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--------------
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- Popup windows now implicitly activate when shown. (QTBUG-7386)
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- QComboBox [QTBUG-7552] Fix an issue where only "..." would be shown for
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QComboBox with certain DPI settings.
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- Fixed a problem where menus exec'ed on system tray icons did not
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disappear. (QTBUG-7386)
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- Improved look and feel for QWizard on Windows 7 and Vista. (QTBUG-9873),
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(QTBUG-11974) and (QTBUG-6120)
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- QLocalSocket
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* Pipe handle leak fixed, when closing a QLocalSocket that still has
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unwritten data. (QTBUG-7815)
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* Fixed closing state for local sockets with unwritten data. (QTBUG-9681)
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* Improved performance of writing to QLocalSocket.
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Qt for Mac OS X
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---------------
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- QMacStyle
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* Removed frame around statusbar items. (QTBUG-3574)
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* More native appearance of item view headers and frames. (QTBUG-10047)
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* Increased spacing between tree view items. (QTBUG-10190)
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* Removed frame around status bar items. (QTBUG-3574)
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- QFontEngine
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* Enable fractional metrics for the font engine on Mac in all
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stages of text layout.
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* [QTBUG-5529] Enable design metrics for correct character spacing
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in ATSUI font engine. (Mac/Carbon)
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- QTextDocument
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* [QTBUG-8791] Fix misalignment of fixed width fonts between
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format changes on Cocoa.
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- QTextLayout
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* [QTBUG-9879] Fix off-by-one in vertical position for elided and
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non-elided text.
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Qt for Embedded Linux
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---------------------
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* Add support for WA_TranslucentBackground (QTBUG-5739)
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* Add support for QFont::NoAntialias (QTBUG-5936)
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Qt for Windows CE
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-----------------
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- Core changes
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* Fixed menu handling on Windows mobile. (QTBUG-8754)
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* Fixed a crash when receiving a certain type of WM_SETTINGSCHANGE
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message. (QTBUG-7943)
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- QWindowsMobileStyle
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* Huge performance penalty for QTabWidget fixed for
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Windows mobile 6.5. (QTBUG-8419)
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* QTabBar scroll button size has been fixed. (QTBUG-8757)
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* Detection of Windows mobile 6.5 fixed. (QTBUG-8418)
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Qt for Symbian
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--------------
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- QSplashScreen
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* [QTBUG-11129] Fixed a hanging bug in QSplashScreen on 3.1 devices.
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- QS60Main... classes
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* The future compatibility of QS60MainAppUi, QS60MainDocument and
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QS60MainApplication are improved by removing the need for any
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sub-class to link to Avkon functions that may not exist in future.
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****************************************************************************
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* Compiler Specific Changes *
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****************************************************************************
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****************************************************************************
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* Tools *
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****************************************************************************
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- Build System
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- [QT-3540] Fixed Symbian resources not honoring TARGET with a path.
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- "configure -fast" on Windows now also works for other make tools than
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nmake. (QTBUG-8562)
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- [QTBUG-11351] Fixed memory restrictions not being passed on to elf2e32.
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- [QTBUG-11385] Removed the need to specify -arch symbian when compiling
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for Symbian on Linux.
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- [QTBUG-11396] "configure -qtlibinfix" now works when compiling for
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Symbian on Linux.
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- [QTBUG-11670] Fixed a bug which caused "make runonphone" to look for
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package in the wrong place.
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- [QTBUG-11727] Fixed a bug which made builds outside of the Qt tree fail
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to compile.
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- [QTBUG-11927] "configure -silent" now works with the
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symbian/linux-armcc and symbian/linux-gcce mkspecs.
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- Assistant
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- Designer
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- [QTBUG-9351] Fixed a bug that caused modified headerview-properties
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of item views to be duplicated in the UI-file.
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- [QTBUG-8347] Fixed a layout problem caused by embedded images in the rich
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text of a QLabel.
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- [QTBUG-8041], [QTBUG-8213] Fixed a crash related to undo while moving
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widgets by arrow keys.
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- [QTBUG-7822] Added support for the 'windowOpacity'-property.
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- [QTBUG-7764] Fixed the emission of the propertyChanged()-signal of
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QDesignerPropertyEditorInterface.
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- [QTBUG-5492] Made widgetbox-filter match on class names, too.
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- Linguist
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* The GNU gettext PO format support has been improved
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- rcc
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- moc
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* Fixed several parsing bugs. Including changes in the normalized signature.
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- uic
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- uic3
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- [QTBUG-9207] Fixed export of image files of type XPM, added
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compatibility option -limit-xpm-linelength.
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- qmake
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* Removed remainder of tmake compatibility
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* Removed remainder of mac9 mode
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* Removed MSVC6 generator
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* Removed makespecs for MSVC.NET and MSVC2002
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* Deprecated -win32/-unix/-macx options, following various cleanups
|
|
relating to platform support. Cross-building makespecs should now
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specify a TARGET_PLATFORM.
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* Started to warn about use of various constructs:
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- non-lowercased replace $$function() calls
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- deprecated variables
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- unescaped backslashes.
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NOTE: You should use UNIX path separators where possible. qmake
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will warn about unnecessary Windows path separators in the future.
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* Removed expansion of qmake- & environment variables in some unexpected
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cases (double expansions, command line options, etc.)
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* Removed splitting at semicolons of literal values which were assigned
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directly to INCLUDEPATH and DEPENDPATH
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* Removed UNIX-specific exporting of all qmake variables to the environment
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of subprocesses invoked via system(). You should put specific assignments
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into the invoked shell command instead.
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* Started to short-cut evaluation inside if() tests, consistently with
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evaluation outside if().
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* Added possibility to request project recursion from within a PRO file
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- configure
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- qtconfig
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- qt3to4
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****************************************************************************
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* Plugins *
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****************************************************************************
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****************************************************************************
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* Important Behavior Changes *
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****************************************************************************
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QtScript: Changes due to updating src/3rdparty/javascriptcore:
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- It is no longer possible to delete an undeletable property from C++
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using QScriptValue::setProperty().
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- The QScriptEngineAgent::positionChange() callback will always report
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a column number of 1.
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- QScriptValueIterator will include the "length" property when iterating
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over Array objects.
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QtCore:
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- QChar no longer carries the Q_PACKED tag on ARM. This flag was
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used to allow proper alignment of QChar on 2 bytes on older ARM
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ABIs, but it also allowed for unaligned access. Qt never generates
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or uses unaligned access and the new EABI aligns as expected, so
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the flag was removed.
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- QTextBoundaryFinder is now consistent with ICU when it comes to
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line breaking, reporting the index of the boundary at which the line
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break should occur rather than the index of the character.
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QtGui:
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- QWidget::setLayoutDirection no longer affects the text layout
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direction (Qt::LeftToRight or Qt::RightToLeft) of QTextEdit, QLineEdit
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and widgets based on them. The default text layout direction
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(Qt::LayoutDirectionAuto) is now detected from keyboard layout and
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language of the text (conforms to Unicode standards). To
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programmatically force the text direction of a QTextEdit, you can
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change the defaultTextOption of the QTextDocument associated with that
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widget with a new QTextOption of different textDirection property. For
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QLineEdit, the only way so far is sending a Qt::Key_Direction_L/R
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keyboard event to that widget.
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QtNetwork:
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- Qt does no longer provide its own CA bundle, but uses system APIs for
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retrieving the default system certificates.
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