| 1 | Qt 4.5.1 is a bug-fix release. It maintains both forward and backward
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| 2 | compatibility (source and binary) with Qt 4.5.0. For more details,
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| 3 | refer to the online documentation included in this distribution. The
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| 4 | documentation is also available online:
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| 5 |
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| 6 | http://doc.trolltech.com/4.5
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| 7 |
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| 8 | The Qt version 4.5 series is binary compatible with the 4.4.x series.
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| 9 | Applications compiled for 4.4 will continue to run with 4.5.
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| 10 |
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| 11 | Some of the changes listed in this file include issue tracking numbers
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| 12 | corresponding to tasks in the Task Tracker:
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| 13 |
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| 14 | http://www.qtsoftware.com/developer/task-tracker
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| 15 |
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| 16 | Each of these identifiers can be entered in the task tracker to obtain more
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| 17 | information about a particular change.
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| 18 |
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| 19 | ****************************************************************************
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| 20 | * General *
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| 21 | ****************************************************************************
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| 22 |
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| 23 | General Improvements
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| 24 | --------------------
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| 25 |
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| 26 | - Documentation and Examples
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| 27 | * Added printing feature for the Spreadsheet demo.
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| 28 | * [245675] Clarified the differences between QItemDelegate and
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| 29 | QStyledItemDelegate.
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| 30 | * [248752] Marked QPrintDialog::printer(), setPrinter() and addButton()
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| 31 | as Unix only functions, part of Qt3Support.
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| 32 |
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| 33 | - Embedded Dialogs demo
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| 34 | * [246517] Fixed warnings and bugs in hover handling on Mac OS X
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| 35 |
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| 36 |
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| 37 | Optimizations
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| 38 | -------------
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| 39 |
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| 40 | - Graphics View Framework has been optimized in several areas
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| 41 | * Improved the performance of QGraphicsItem::clipPath().
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| 42 | * Improved the performance of QGraphicsItem::setPos().
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| 43 | * Improved the performance of QGraphicsItem::effectiveOpacity().
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| 44 | * Improved the performance of QGrahicsScene::items(*).
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| 45 | * Improved handling of updates.
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| 46 | * Reduced the number of floating point operations.
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| 47 | * Reduced QVariant overhead.
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| 48 |
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| 49 | Third party components
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| 50 | ----------------------
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| 51 |
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| 52 |
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| 53 | ****************************************************************************
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| 54 | * Library *
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| 55 | ****************************************************************************
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| 56 |
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| 57 | - QAbstractItemModel
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| 58 | * Clarified some warning messages printed if the model is invalid.
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| 59 |
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| 60 | - QAbstractEventDispatcher
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| 61 | * [248805] Duplicate timerids could occur if a timer is running while the
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| 62 | QObject is moved to another thread, stopping timers from working.
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| 63 |
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| 64 | - QAbstractSocket
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| 65 | * [192037] Emit the disconnected signal only if we were connected before.
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| 66 |
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| 67 | - QAccessible
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| 68 | * [221731] Fixed a bug where the accessibility plugin could crash if
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| 69 | there was an "&" at the end or spin forever if a label had a sequence of
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| 70 | "&&".
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| 71 | * [241161] Fixed a bug in browsing menus with the keyboard.
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| 72 |
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| 73 | - QAtomicInt
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| 74 | * [216492] Fixed compilation on 64-bit PowerPC machines with gcc 4.3.
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| 75 |
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| 76 | - QAuthenticator
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| 77 | * [237979] Fixed implementation of md5-sess.
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| 78 |
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| 79 | - QByteArray
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| 80 | * [246233] QByteArray::fromHex() fails with input of size 1.
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| 81 |
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| 82 | - QColorDialog
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| 83 | * [247349] Fixed a bug causing the wrong alpha value to be returned.
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| 84 |
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| 85 | - QCombobox
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| 86 | * [248094] Fixed scrollbar from appearing when not required.
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| 87 |
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| 88 | - QCompleter
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| 89 | * [246056] Fixed an assertion failure in setCompletionPrefix().
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| 90 | * [250064] Fixed a regression in focus policy propagation.
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| 91 |
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| 92 | - QtConcurrent
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| 93 | * [244718] Reduced the number of calls to QThread::idealThreadCount().
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| 94 |
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| 95 | - QDirIterator
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| 96 | * [247645] Fixed a bug that may loose all cached data inside QFileInfo.
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| 97 |
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| 98 | - QFile
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| 99 | * [244485] Renaming a file does not change QFile::fileName().
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| 100 | * [244500] QFile::rename() does not always return false when the method
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| 101 | fails
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| 102 |
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| 103 | - QFileInfo
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| 104 | * [205244] Return valid file info also for relative UNC paths.
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| 105 |
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| 106 | - QFileDialog
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| 107 | * [221323] Fixed a bug in QFileDialog's programmatical file selection.
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| 108 | * [248332] QFileDialog is slow after visiting a large directory.
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| 109 | * [250194] Fixed an issue with QFileDialog and QSortFilterProxyModel
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| 110 | index mapping.
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| 111 |
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| 112 | - QGLFramebufferObject
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| 113 | * Framebuffer object extension resolution now works with OpenGL/ES 2.0.
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| 114 |
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| 115 | - QGraphicsItem
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| 116 | * Fixed a slow down regression in QGraphicsItem::ItemCoordinateCache.
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| 117 | * [247890] Cached QGraphicsItems are not updated if update() is called
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| 118 | when they are hidden.
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| 119 | * [250272] Fixed a crash that could occur when an item is deleted but
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| 120 | it does not get removed from the sceneeventfilters.
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| 121 |
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| 122 | - QGraphicsGridLayout
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| 123 | * [242472] Fixed a bug where the calculation of the maximum width of a
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| 124 | column was incorrect.
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| 125 |
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| 126 | - QGraphicsScene
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| 127 | * [243707] Fixed a crash when adding a child before a parent to the
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| 128 | scene.
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| 129 |
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| 130 | - QGraphicsView
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| 131 | * [245766] Rubber Band drag mode does not update correctly when
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| 132 | scrolling.
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| 133 |
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| 134 | - QGraphicsWidget
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| 135 | * [246215] Fixed a regression where we could cache the wrong size hint
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| 136 | because we called the virtual sizeHint() from the constructor.
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| 137 |
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| 138 | - QHttp
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| 139 | * Compile fixes for QT_BEGIN_NAMESPACE being in the wrong place in some
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| 140 | private headers.
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| 141 | * [208445] Cancel request upon receiving unknown authentication method.
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| 142 |
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| 143 | - QHostAddress
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| 144 | * [247330] Fixed compilation on MinGW by adding a missing QPair include.
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| 145 |
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| 146 | - QLocalSocket
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| 147 | * Fixed a bug that would cause QLocalSocket to disconnect 30 seconds
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| 148 | after a succesful delayed connection on UNIX.
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| 149 |
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| 150 | - QMacStyle
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| 151 | * Adjusted the opacity value for popups.
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| 152 | * [248769] Fixed a regression where QMacStyle would only draw tabs when
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| 153 | passed a QStyleOptionTabV3.
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| 154 |
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| 155 | - QMainWindow
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| 156 | * [248048] Fixed a regression that would cause tooltips to disappear when
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| 157 | using the unified toolbar.
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| 158 |
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| 159 | - QMetaType
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| 160 | * [248890] The detailed description of QMetaType no longer contradicts
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| 161 | the documentation of QMetaType::type()
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| 162 |
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| 163 | - QMutex
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| 164 | * Fixed a performance regression for contended mutexes as reported on the
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| 165 | qt4-preview-feedback list.
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| 166 |
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| 167 | - QPainter
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| 168 | * Compile fixes for OpenGL paint engine on OpenGL/ES 1.1 CommonLite and
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| 169 | OpenGL/ES 1.0.
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| 170 | * [246573] Fixed a very slow stroking of paths in the X11 paint engine.
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| 171 | * [247083] Fixed the scale applied to antialiased cosmetic pens in X11
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| 172 | paint engine.
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| 173 | * [247492] Fixed a rendering bug in the raster paint engine causing
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| 174 | * [247505] Fixed missing fills of rectangles with negative width/height
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| 175 | in raster paint engine.
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| 176 | one-pixel offset when drawing premultiplied ARGB32 images on RGB16
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| 177 | images.
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| 178 | * [249490] Fixed one-pixel offset between stroke and fills of ellipses in
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| 179 | the X11 paint engine.
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| 180 | * [249628] Fixed a crash in OpenGL paint engine when filling using
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| 181 | Qt::NoBrush.
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| 182 |
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