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
   * Added printing feature for the Spreadsheet demo.
   * [245675] Clarified the differences between QItemDelegate and
     QStyledItemDelegate.
   * [248752] Marked QPrintDialog::printer(), setPrinter() and addButton()
     as Unix only functions, part of Qt3Support.

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


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

- Graphics View Framework 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 handling of updates.
   * Reduced the number of floating point operations.
   * Reduced QVariant overhead.

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


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

- QAbstractItemModel
   * Clarified some warning messages printed if the model is invalid.

- QAbstractEventDispatcher
   * [248805] Duplicate timerids could occur if a timer is running while the
     QObject is moved to another thread, stopping timers from working.

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

- QAccessible
   * [241161] Fixed a bug in browsing menus with the keyboard.
   * [221731] Fixed a 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] Fixed compilation on 64-bit PowerPC machines with gcc 4.3.

- QAuthenticator
   * [237979] Fixed implementation of md5-sess.

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

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

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

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

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

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

- QFile
   * [244500] QFile::rename() does not 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] Fixed an issue with QFileDialog and QSortFilterProxyModel
     index mapping.
   * [248332] QFileDialog is slow after visiting a large directory.
   * [221323] Fixed a bug in QFileDialog's programmatical file selection.

- QGLFramebufferObject
   * Framebuffer object extension resolution now works with OpenGL/ES 2.0.

- QGraphicsItem
   * [247890] Cached QGraphicsItems are not updated if update() is called
     when they are hidden.
   * [250272] Fixed a crash that could occur when an item is deleted but
     it does not get removed from the sceneeventfilters.
   * Fixed a slow down regression in QGraphicsItem::ItemCoordinateCache.

- QGraphicsGridLayout
   * [242472] Fixed a bug where the calculation of the maximum width of a
     column was incorrect.

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

- QGraphicsView
   * [245766] Rubber Band drag mode does not update 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.
   * Compile fixes for QT_BEGIN_NAMESPACE being in the wrong place in some
     private headers.

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

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

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

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

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

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

- QPainter
   * [247492] Fixed a rendering bug in the raster paint engine causing
     one-pixel offset when drawing premultiplied ARGB32 images on RGB16
     images.
   * [249490] Fixed one-pixel offset between stroke and fills of ellipses in
     the X11 paint engine.
   * [246573] Fixed a very slow stroking of paths in the X11 paint engine.
   * [247083] Fixed the scale applied to antialiased cosmetic pens in X11
     paint engine.
   * [247505] Fixed missing fills of rectangles with negative width/height
     in raster paint engine.
   * [249628] Fixed a crash in OpenGL paint engine when filling using
     Qt::NoBrush.
   * Compile fixes for OpenGL paint engine on OpenGL/ES 1.1 CommonLite and
     OpenGL/ES 1.0.

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

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

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

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

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

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

- QString
   * [249517] Fixed a regression in replace(int, int, QChar) when the 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 background of QScrollBar.
   * [188195] Fixed the background of QAbstractScrollArea losing its color
     if styled with pseudo-class.
   * Fixed a crash that occured while styling the title bar of a QMdiArea.
   * [246542] Fixed a bug in QToolButton::hover{ color:.... }.

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

- QTreeView
   * Fixed a crash that may occur when events are processed immediately
     after a QSortFilterProxyModel is invalidated.
   * [246025] Fixed auto-expand that occured when quickly collapsing an item
     after clicking on a child.
   * [248805] Calling QTreeView::sortByColumn() programmatically was not
     working if manual sorting was disabled.
   * [248163] Fixed a possible crash in the paintEvent() when spans are used.

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

- QWidget
   * [246852] Improved handling of WindowMaximizeButtonHint for widgets with
     layouts.

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

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

- Q3ListView
   * [248689] Fixed a bug in Q3ListView that would not update under certain
     conditions.

- QtWebKit
   * [248643] Fixed compiling with the "-pedantic" compile option.
   * Fixed a bug in cookie handling (WebKit Bugzilla 24062, Benjamin Meyer).
   * Fixed a bug in calling from JavaScript into NPAPI plugins on Windows.
   * Fixed the updating state of WebActions (Erik Bunce)
   * Fixed a bug in HTML 5 Canvas clearRect() (Dirk Schulze)
   * Fixed the theming of text fields 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 database's letter case (uppercase/
     lowercase)  of the given tablename.

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

   * Fixed the DB2 driver returning a double field as empty.
   * Fixed a memory leak in the DB2 driver.
   * [249059] Fixed a bug that handled QPSQL datetime/time fields with
     negative timezone offsets incorrectly.
   * Fixed the DB2 driver not quoting table/field names properly.
   * Fixed an issue with ODBC & FreeTDS not accepting quotes in statements.
   * Fixed a bug in the sqlite2 driver not returning false on failing to
     execute a statement.
   * PrecisionPolicy now works in the oracle driver.
   * Fixed a bug in the ODBC driver returning a list of tables when
     requested.
   * Fixed Interbase retrieving scale/precision information on numeric/
     decimal fields.
   * Stopped drivers from quoting again when escapeIdentifier is called
     twice.
   * Fixed a bug in the sqlite2 driver not quoting fields correctly.
   * [232769] Fixed a 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.
- Fix recreation of temporary EGL surfaces in PowerVR gfxdriver.
- Document some necessary #define's for building the PowerVR gfxdriver.

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

    * [248076] Fixed crash upon opening files for which we have no plural rules
    * [249519] Fixed crash upon dropping text into non-focused lineedit

  - Entire Linguist toolchain

    * [244035] Fixed endless loop in PO writer
    * [247738] Improved handling of duplicated messages
    * [248849] Fixed encoding in XLIFF writer
    * [249022] Fixed TS' and QM's handling of messages which appear in multiple encodings

  - lupdate

    * [248724] Fixed encoding of messages from .ui files if CODECFORTR is not utf8
    * [249633] Fixed processing of C++ backslash line continuations

- 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
    * Fixed moc and uic features to make shadow builds work even if a non-shadow build is present


- configure


- qtconfig


- qt3to4


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


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