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Qt 4.6.1 is a bug-fix release. It maintains both forward and backward
compatibility (source and binary) with Qt 4.6.0. For more details,
refer to the online documentation included in this distribution. The
documentation is also available online:
http://qt.nokia.com/doc/4.6
The Qt version 4.6 series is binary compatible with the 4.5.x series.
Applications compiled for 4.5 will continue to run with 4.6.
Some of the changes listed in this file include issue tracking numbers
corresponding to tasks in the Qt Bug Tracker, the (now obsolete) Task
Tracker, or the Merge Request queue of the public source repository.
Qt Bug Tracker: http://bugreports.qt.nokia.com
Task Tracker: http://qt.nokia.com/developer/task-tracker
Merge Request: http://qt.gitorious.org
****************************************************************************
* General *
****************************************************************************
New features
------------
- SomeClass, SomeOtherClass
* New classes for foo, bar and baz
Optimizations
-------------
- Optimized foo in QSomeClass
* See list of Important Behavior Changes below
****************************************************************************
* Library *
****************************************************************************
QtCore
------
- QFile
* Improve performance of getting the canonical filename on Linux
and Symbian by using realpath() system call
* Avoid stat() when opening a file
QtGui
-----
- QApplication
* [QTBUG-6654] Fix crashes when deleting QWidgets in touch event
handlers.
- QPixmap
* load() and loadFromData() can now support compressed GL textures
in the DDS, ETC1, PVRTC2, and PVRTC4 formats if the OpenGL graphics
system is active and the appropriate extensions are present in the
GL implementation.
- QGraphicsObject
* 'id' property was removed. Use the 'objectName' property instead.
- QGraphicsScene
* [QTBUG-6654] Fix crashes when deleting QGraphicsItems in touch
event handlers.
QtDBus
------
- foo
* bar
QtNetwork
---------
- QNetworkAccessManager
* HTTP: Smaller improvements
* HTTP: Send our locale with the HTTP request
* HTTP: Start Accept-language and Authorization header with capital letter
* file: Introduce special subclass for higher performance with file:// URLs
- QTcpSocket
* [QTBUG-5799] Fix waitForConnected() on Windows
- QNetworkProxyFactory
* Fixed systemProxyForQuery(), it could sometimes return invalid empty list
on Windows
- QHostInfo
* Use 5 parallel threads for host lookup instead of 1
QtOpenGL
--------
- QGLContext
* bindTexture(QString) now supports DDS, ETC1, PVRTC2, and PVRTC4
compressed textures if the appropriate extensions are present
in the GL implementation.
* bindTexture(QImage): Reduce double-copying of textures when flipping.
* [QTBUG-6454] Better EGL extension checking to avoid prefix problems
with EGL_foo matching EGL_foo_bar.
* [QTBUG-6217] Work around problems with glColor4ub() on Intel Q45/Q43
Express by consistently using glColor4f() everywhere.
* bindTexture(QImage): Fix GL_BGRA formats under OpenGL/ES by using
the same value for both internal and external texture formats.
* [QTBUG-5041] Disable depth testing while in renderText().
- QGLPaintDevice
* [QTBUG-6204] Rebind window surface fbo after native GL rendering.
- QGLEngineSelector
* [QTBUG-5638] Detect GL2 based on fragment shaders, not programs.
Fragment programs are a GL1 feature.
- QGLFramebufferObject
* [QTBUG-6712] Update docs to better explain how QPainter changes
the GL state when used on an FBO.
- QGLPixmapData
* [QTBUG-6902] Align GL_RGB data on a 4-byte line boundary.
- QTriangulatingStroker
* [QTBUG-6045] Crash in dashed line handling in the GL stroker.
- QGLGlyphCache
* [QTBUG-6936] Fix memory leak of QGLGlyphCoord objects.
QtOpenVG
--------
- [QT-2555] Automatically destroy VG pixmaps when the last window surface
goes away to reduce memory consumption of backgrounded applications.
- [QTBUG-6639] Recover from out-of-memory when creating VGImage's.
- [QT-2554] Add a VGImage allocation pool to support reclaiming older
images when the GPU runs out of memory.
- [QTBUG-7051] Reset the OpenVG scissor after a native painting call-out.
- [QTBUG-7015] Avoid deep copies of QImage in QImage::bits() calls.
QtScript
--------
- foo
* bar
QtSql
-----
- foo
* bar
QtXml
-----
- foo
* bar
Qt Plugins
----------
- JPEG plugin
* Remove obsolete parameter string handling.
* [QT-2023] Re-implement ScaledSize, ClipRect, ScaledClipRect with
libjpeg features for greater performance.
- PBM plugin
* [QTBUG-6937] Use Mono instead of MonoLSB when writing pbm files.
- TIFF plugin
* [QTBUG-6870] BitsPerSample should default to 1 in TIFF files.
- PNG plugin
* [QTBUG-7161] Avoid a deep copy of QImage::bits() in the png writer.
Third party components
----------------------
- Updated foo to version 2.3.9.
- Updated bar to the latest version from baz.org.
****************************************************************************
* Platform Specific Changes *
****************************************************************************
Qt for Unix (X11 and Mac OS X)
------------------------------
-
Qt for Linux/X11
----------------
- QGuiEventDispatcherGlib (internal class)
* Fix regression introduced in 4.6.0 that could cause X11 event
processing to starve timer events.
- QFileSystemWatcher
* [QTBUG-4840] Fix memory leak in the dnotify implementation.
Qt for Windows
--------------
- QAtomicPointer
* [QTBUG-6079] Fix compilation for 64-bit Windows targets.
- QEventDispatchWin32 (internal class)
* [QTBUG-6083] Fix a performance regression introduced in 4.6.0
that would cause all Qt posted events to be sent at 15-16ms
intervals (instead of as quickly as possible).
Qt for Mac OS X
---------------
-
Qt for Embedded Linux
---------------------
-
DirectFB
--------
-
Qt for Windows CE
-----------------
-
Qt for Symbian
--------------
- QApplication
* [QTBUG-6098] Added a flag to avoid construction of application panes.
- Other:
* [QTBUG-4990] Rewrote most of the regular pointer handling.
****************************************************************************
* Tools *
****************************************************************************
- Designer
* [QTBUG-6863] Fixed static linking on Mac.
* [QTBUG-6760] Fixed display of action shortcut in action editor.
* [QTBUG-6505] Fixed handling of QHeaderView properties.
* [QTBUG-5335] Fixed handling of layout margins of custom containers.
- uic
* [QTBUG-5824] Fixed code generation to generate a call to
QMainWindow::setCentralWidget() for promoted widgets as well.
- qdoc3
* bar
- Linguist
* baz
****************************************************************************
* Important Behavior Changes *
****************************************************************************
-
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