path: root/dist/changes-4.5.1

Qt 4.5.1 is a bug-fix release. It maintains both forward and backward
compatibility (source and binary) with Qt 4.5.0.  For more details,
refer to the online documentation included in this distribution. The
documentation is also available online:

  http://doc.trolltech.com/4.5

The Qt version 4.5 series is binary compatible with the 4.4.x series.
Applications compiled for 4.4 will continue to run with 4.5.

Some of the changes listed in this file include issue tracking numbers
corresponding to tasks in the Task Tracker:

  http://www.qtsoftware.com/developer/task-tracker

Each of these identifiers can be entered in the task tracker to obtain more
information about a particular change.

****************************************************************************
*                           General                                        *
****************************************************************************

General Improvements
--------------------

- Documentation and Examples

- Embedded Dialogs demo
   * [246517] Fixed warnings and bugs in hover handling on Mac OS X


Optimizations
-------------

- Graphics View has been optimized in several areas
    * Improved the performance of QGraphicsItem::clipPath.
    * Improved the performance of QGraphicsItem::setPos.
    * Improved the performance of QGraphicsItem::effectiveOpacity.
    * Improved the performance of QGrahicsScene::items(*).
    * Improved update handling.
    * Reduced the number of floating point operations.
    * Reduced QVariant overhead.

Third party components
----------------------


****************************************************************************
*                          Library                                         *
****************************************************************************

- QAbstractItemModel
   * [243195] Clrarified some warning messages printed if the model is invalid.

- QAbstractEventDispatcher
   * [248805] Duplicates timerid could happen when timer are running while
     the QObject is moved to another thread, and would stop timers from working.

- QAbstractSocket
   * [192037] Emit disconnected only if we were connected before

- QAccessible
   * [241161] Fixed bug in browsing menus with the keyboard.
   * [221731] Fixed bug where the accessibility plugin could crash if there
     was an "&" at the end or spin forever if a label had a sequence of "&&".

- QAtomicInt
   * [216492] Fix compilation on 64-bit PowerPC machines with gcc 4.3.

- QAuthenticator
   * [237979] fix implemenation of md5-sess

- QByteArray
   * [246233] QByteArray::fromHex() fails with input of size 1

- QColorDialog
   * [247349] Fixed bug causing the wrong alpha value to be returned.

- QCombobox
   * [248094] Fixed scrollbar appearing while not required.

- QCompleter
   * [250064] Fixed focus policy propagation regression.
   * [246056] Fixed assertion failure in setCompletionPrefix().

- QtConcurrent
   * [244718] Reduce the number of calls to QThread::idealThreadCount().

- QDirIterator
   * [247645] Fix a bug that may loose all cached data inside the QFileInfo

- QFile
   * [244500] QFile::rename() doesn't always return false when the method fails
   * [244485] Renaming a file does not change QFile::fileName()

- QFileInfo
   * [205244] return valid file info also for relative UNC paths

- QFileDialog
   * [250194] QFileDialog and QSortFilterProxyModel index mapping issue
   * [248332] QFileDialog is slow after visiting a large directory
   * [221323] QFileDialog programatical file selection bug

- QGraphicsItem
   * [247890] Cached QGraphicsItems are not updated if update() is called when they are hidden
   * [250272] When an item is deleted it does not get removed from the
   sceneeventfilters meaning a crash can occur
   * Fixed slowdown regression in QGraphicsItem::ItemCoordinateCache

- QGraphicsGridLayout
   * [242472] Fix a bug where the calculation of the maximum width of a column
     was not calculated correctly.

- QGraphicsScene
   * [243707] Fixed crash when adding child before parent to scene

-QGraphicsView
   * [245766] Rubber Band drag mode not updated correctly when scrolling

- QGraphicsWidget
    * [246215] Fixed a regression where we could cache the wrong size hint
      because we called the virtual sizeHint() from the constructor.

- QHttp
   * [208445] cancel request upon receiving unknown authentication method

- QHostAddress
   * [247330] Fix compilation on MinGW by adding a missing QPair include.

- QLocalSocket
   * Fix a bug that would cause QLocalSocket to disconnect 30 seconds
     after a succesful delayed connection on UNIX.

- QMacStyle
    * [248769] Fix regression where QMacStyle would only draw tabs when passed a QStyleOptionTabV3.
    * Adjust the opacity value for popups.

- QMainWindow
    * [248048] Fix a regression that would cause tooltips to disappear when using the unified toolbar.

- QMetaType
   * [248890] Detailed description of QMetaType no longer contradicts
     documentation of QMetaType::type()

- QMutex
   * Fix performance regression for contended mutexes as reported on
     the qt4-preview-feedback list.

- QPainter
   * [247492] Fix rendering bug in raster paint engine causing one-pixel
     offset when drawing premultiplied ARGB32 images on RGB16 images.
   * [249490] Fix one-pixel offset between stroke and fills of ellipses in
     X11 paint engine.
   * [246573] Fix very slow stroking of paths in X11 paint engine.
   * [247083] Fix scale applied to antialiased cosmetic pens in X11 paint
     engine.
   * [247505] Fix missing fills of rectangles with negative width/height in
     raster paint engine.
   * [249628] Fix crash in OpenGL paint engine when filling using Qt::NoBrush.

- QPixmap
   * [249175] Fix QPixmap::fromImage() of monochrome images to result in
     black/white pixels and not transparent/white pixels.

- QProcess
   * [247865] Fix a crash when calling QProcess::start() and
     startDetached() with an empty program string.

- QScrollBar
   * [247985] Stylesheet: added ability to style scrollbar menus.

- QSharedPointer
   * [246843] Fixed a crash caused by using QSharedPointer in global statics

- QSortFilterProxyModel
   * [247867] Properly sort when calling appendRows()
   * [248868] Resort when the model is reset if dynamicSort is enabled.
   * [248868] Fixed QSortFilterProxyModel::sort while dynamicSort was disabled.

- QSSlSocket
   * [245668] set also protocol, verifyMode and verifyDepth in
     setSslConfiguration()

- QString
   * [249517] Fixed regression in replace(int, int, QChar) when string is empty

- QStyleSheetStyle
   * Improved support for setting background and foreground roles in styles
    such as the text color in a combo box popup on Mac and Cleanlooks, or
    the QScrollBar background.
   * [188195] fix background of QAbstractScrollArea loosing its color if styled with pseudo-class.
   * Fixed crash while styling the title bar of a QMdiArea.
   * [246542] Fixed QToolButton::hover{ color:.... }

- QThread
   * [249997] Add documentation indicating that the priority set by
     the programmer may be ignored, for example on Linux.

- QTreeView
   * Fixed crash that may occurs when event are processed just after QSortFilterProxyModel
     has been invalidated
   * [246025] Fixed auto-expand that occurs while quicly collapsing an item after clicking on a child
   * [248805] Calling programatically  QTreeView::sortByColumn was not working if manual
     sorting is disabled
   * [248163] Fixed possible crash in the paintEvent when spans are used.

- QWidget
   * [250388] Fixed potential crash in QWidget::scroll() when using the raster
     graphics system.

- QWidget
   * [246852] Better handling WindowMaximizeButtonHint for widget with
     layouts.

-QLocale
   * String-to-number conversion functions are now ignore trailing and
     leading whitespaces in all locales as it is documented.

- QWizard
   * [248107] Fixed bug on Vista causing Back button to connect twice to the back() signal.

- Q3ListView
   * [248689] Q3ListView would not update under certain condition.

- QtWebKit
   * Fix bug in cookie handling (WebKit Bugzilla 24062, Benjamin Meyer).
   * Fixed support for calling from JavaScript into NPAPI plugins on Windows.
   * Fixed updating state of WebActions (Erik Bunce)
   * Fixed bug in HTML 5 Canvas clearRect() (Dirk Schulze)
   * Fixed text field theming with KDE 4 Oxygen style (Zack Rusin)
   * Fixed path fill styles (Zack Rusin)
   * Fixed pre-edit text handling with input methods.

- QSqlTableModel
   * [189093] QSqlTableModel did not handle updates when one of the fields
     had a NULL value.
   * Made setTable() try and use the db's casing of the passed tablename.

****************************************************************************
*                          Database Drivers                                *
****************************************************************************

   * Fixed DB2 driver returning double field as empty
   * Fixed memory leak in DB2 driver
   * [249059] Fixed QPSQL datetime/time fields with negative timezone offsets
     not being handled correctly.
   * Fixed DB2 not enquoting table/field names properly.
   * Fixed an issue with ODBC & FreeTDS not accepting quotes in statements.
   * Fixed sqlite2 driver not returning false on failing to exec a statement.
   * PrecisionPolicy now works in the oracle driver.
   * Fixed ODBC driver returning a list of tables when requested.
   * Fixed Interbase retrieving scale/precision information on numeric/decimal fields.
   * Stopped drivers doing quoting again when escapeIdentifier called twice.
   * Fixed sqlite2 driver not quoting fields correctly.
   * [232769] Fixed memory overflow issue on bound out strings in ODBC Driver

****************************************************************************
*                      Platform Specific Changes                           *
****************************************************************************

Qt for Linux/X11
----------------

   * Proper resetting input contexts when switching between multiple
     input context plugins.

   * [244337] Improved input method handling when the widgets native
     window id is recreated.

   * Input methods preedit strings are properly reset when user
     switches focus without commiting a string.

   * [244607] Current focus widget is properly set and input method is
     properly initialized when showing a toplevel that accepts
     keyboard input.

   * Unicode conversion functions will handle Latin-1 character set
     only if they are used before QCoreApplication/QApplication is
     constructed.

   * Improved handling of failed unicode conversion.

   * [232632] Fixed reparenting widgets to a difference X11 screen.

   * [241888] The background of the drag-n-drop cursor is respected
     according to the stylesheet.

   * Fixed clipboard handling when the user manually creates an
     instance of the QDesktopWidget.

   * [226048] Fixed emitting a QDesktopWidget::resized() signal when
     new screen appears or screen geometry is changed without
     affecting the whole desktop geometry.

- Phonon/GStreamer
   * [244259] Fixed a problem where the backend would fail to indicate an
    error when streaming fails.
   * [233188] Fixed a problem where the seek slider would reset to 0 while
    being dragged.
   * [246189] Fixed a problem where the backend would fail to correctly
    escape certain file names so that playback would not start
   * [246097] Added support for the MediaController interface to allow audio
    CD playback.

- QGtkStyle
   * The system palette is no longer strictly forced. Also behavior related
    to system theme changes have been improved.
   * [249363] QFrame is now styled as a GtkScrolledWindow.
   * [247653] Fixed a compilation issue on solaris.
   * Fixed palette and styling issues with the background color of
    combo box popups.
   * [239829] Disabled alt-key navigation for QGtkStyle to follow
    GTK+ behavior.
   * [238196] Allow middle click to set scrollbar position to follow
    GTK+ behavior.

- Font rendering
   * Improve performance of subpixel antialiased text rendering by using a mask
     in the calls to XRender's text compositing function.
   * [248387] Better respect the font config LCD filter settings for subpixel
     antialiased text rendering when Freetype's native subpixel rendering is
     disabled.
   * [248498] Fix garbled rendering of subpixel antialiased text when using
     Freetype's native subpixel rendering for vertical subpixel layouts.
   * [248644] Fall back to Qt's subpixel rendering if Freetype's subpixel
     rendering is available at compile-time but not at run-time.

- QEventDispatcherGlib
   * Event posted to a thread before it is started are not processed until
     others events are posted.

- QWidget
    * [213512] Fixed a bug that would cause wrong clipping when using the
      Qt::WA_PaintOutsidePaintEvent attribute.


Qt for Windows
--------------

   * [243583] Improved drag-and-drop handling when switching mouse
     buttons fast.

- QCoreApplication
   * [247401] Fixed a bug that would cause a restarted timer to fire
     too early, causing Javascript in QtWebKit to consume 100% CPU on
     Windows.
- QWindowsXPStyle
    * [248036] Fixed an issue where tool buttons would incorrectly
      hover when disabled.

- QWidget
    * [248391] Fixed a bug that made it impossible to dynamically switch
      from QPainter based graphics to native graphics API and back.

- [249576] Fixed a crash when using a combobox with Qt::NoFocus.
- [244875] System menu will now be shown for a fullscreen  window.
- [240891] Corrected the focus behavior of native file dialogs, when application has multiple toplevels.
- [245330] Fixed a bug which causes mouse inputs to be ignored on modal dialogs, when shown from an ActieQt control.

Qt for Mac OS X
---------------

- Cocoa port
    * Fixed a bug where actions in the native menubar weren't properly disabled.
    * Make shortcuts work properly when using the Dvorak-QWERTY+CMD keyboard layout.
    * Fixed a bug where dialogs would be positioned in the wrong place on the screen.
    * [244369] Window flags on Cocoa windows should match have a similar look as the Carbon ones.
    * The build-key for Cocoa was changed in the unlikely case that a plugin may make
      assumptions on how Qt was built. All Cocoa plugins built against 4.5.0 WILL NOT WORK
      with 4.5.1, we don't foresee changing this again.
    * Fixed a bug where some windows would not get activation when they normally should.
    * Key events sent to popups do not get propagated onwards.
    * [249296] Fix a bug where lineedits on a second page of a stack widget would not get key events
    * QFileOpenEvents are no longer sent for items passed on the command line.
    * Various fixes for determining metrics of text and the ability to disable kerning.
    * [248918] Fixed color matching for themed text items.
    * Modify the colliding mice example to work better with coalesced updates.
    * Fixed a bug where the drag cursor was not updated when modifier keys are used.
    * [247947] Fixed a crash in drag and drop.
    * The command + h shortcut is now enabled. (Hides the current window.)
    * [239043] Fixed a bug that would cause QGraphicsProxyWidget to shrink when moving it.

- QDesktopWidget
    * [244004] Support multiple screens that have different sizes properly.

- QDialog
    * [239155] QDialog(foo, Qt::Sheet) with QComboBox have none native behavior.
    * [218980] Modeless dialogs should be stacked above normal windows.
    * [195904] Parent dialog is displayed on top of its modal child.

- QFileDialog
    * [219844] QFileDialog::getOpenFileName() search buttons lead to crash (native version).
    * [225705] QFileDialog::getSaveFileName()'s filter does not display correctly.

- QMenu
    * [228017] QMenu should close when expanding a system menu.

- Event system
    * [210912] ShowEvent not sendt when reshowing a window after it was minimized.

- macdeployqt 
    * The binary packages now includes the macdeployqt tool.
    * macdeployqt now runs 'strip' on the deployed binaries.
    * Fixed issue preventing the QtSvg from being deployed.

- configure script
    * Now supports "-arch i386" as an alias for "-arch x86".
    * Detects invalid arch arguemnts and exits.

- Fix a crash when showing a widget that is window modal but has no parent.
- [248803] Showing two dialogs at the same time don't get shared activation.
- Added QSysInfo::MV_10_6 as an enum to test against.
- Various compile fixes for Snow Leopard (preliminary support).
- The uninstall-qt.py script included in the binary package no longer complains about removing itself multiple times.
- [223525] Macmainwindow Demo Application (crashfix).


- Document a bit clearer how qt_mac_set_dock_menu() works.

- QTestLib
    * Activate the test application when launched from the command line.

- Fixed the focus frame transparency that would make widget difficult to use with widget stylesheet.

Qt for Embedded Linux
---------------------

- Various improvements to the Qt DirectFB plugin.

Qt for Windows CE
-----------------

    * [246619] Fixed tap and hold bug for QCheckbox.

****************************************************************************
*                      Compiler Specific Changes                           *
****************************************************************************


****************************************************************************
*                          Tools                                           *
****************************************************************************

- Build System

- Assistant


- Designer
    * [249097] Fixed a crash related to undoing a QGridLayout re-layouting
      operation.
    * [247995] Fixed a crash occurring after layout operations that cause
      an instance of QGridLayout or QFormLayout to shrink.
    * [248000] Fixed a crash ocurring when re-layouting empty grid layouts.
    * [245961] Restricted objectname-validation to known object name
      properties only.
    * [245503] Fixed redundant backslashes in string property in property browser.

- Linguist
  - Linguist GUI

  - lupdate

  - lrelease


- rcc


- moc
    * [240368] moc parsing issue with "unsigned" subphrase

- uic
    * [244998] Fixed include file generation for phonon widgets.
    * [248070] Fixed code generation for QStringList-type properties to use
      encoding properly.
    * [242447] Made uic generate class-specific code correctly in the case
      of multiple levels of inheritance.

- uic3


- qmake
    * [248806] Ensure that the Xcode generator includes the right path to frameworks.
    * [201495] Comment processing in qmake prevented file from being moc'ed
    * On Mac OS, properly escape file names in QMAKE_BUNDLE_DATA


- configure


- qtconfig


- qt3to4


****************************************************************************
*                          Plugins                                         *
****************************************************************************


****************************************************************************
*                   Important Behavior Changes                             *
****************************************************************************