178 lines
7.5 KiB
Groff
178 lines
7.5 KiB
Groff
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Qt 5.15.1 is a bug-fix release. It maintains both forward and backward
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compatibility (source and binary) with Qt 5.15.0.
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For more details, refer to the online documentation included in this
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distribution. The documentation is also available online:
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https://doc.qt.io/qt-5/index.html
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The Qt version 5.15 series is binary compatible with the 5.14.x series.
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Applications compiled for 5.14 will continue to run with 5.15.
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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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https://bugreports.qt.io/
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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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* Important Behavior Changes *
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****************************************************************************
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- QSharedPointer objects will now call custom deleters even when the
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pointer being tracked was null. This behavior is the same as
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std::shared_ptr.
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- Restored pre-5.15.0 behavior when converting from QVariant* to QJson*
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types. Unforeseen consequences of changes in 5.15.0 caused QByteArray
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data to be base64url-encoded; the handling of QRegularExpression was
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also unintentionally changed. These conversions are now reverted to the
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prior behavior. Additionally fixed QJsonValue::fromVariant conversions
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for NaN and infinities: they should always convert to QJsonValue::Null.
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****************************************************************************
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* QtCore *
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****************************************************************************
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- JSON
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* Fixed a regression from 5.14 that caused values of default-constructed
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QVariants in QVariantLists, QVariantMaps and QVariantHashes to
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disappear when converting to JSON via fromVariant{,List,Map,Hash}.
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- QCborMap
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* Fixed a bug that could cause the iterator returned from a failing key
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search with find() not to match end(). Now, every call to find() will
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detach in shared QCborMaps; to avoid this, use constFind() and
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constEnd().
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- QFile:
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* moveToTrash now creates the trash folder on Linux as
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$XDG_DATA_HOME/Trash, as required by the freedesktop.org spec.
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* moveToTrash supports relative file paths on Windows.
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- QImage:
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* Fixed buffer overflow in XBM parser.
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* [oss-fuzz-23988] Fixed buffer overflow in XPM parser.
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- QJsonDocument:
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* Fixed a bug that caused QJsonDocument's equality operator to crash if
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one of the operands was default-constructed and the other wasn't.
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- QString:
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* Fixed quadratic worst-case complexity of remove(QString). The function
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now has linear complexity in all cases.
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- QTimeLine:
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* Deprecated QTimeLine's curveShape property in favor of the easingCurve
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property.
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- QXmlStreamReader:
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* [oss-fuzz-24347] Reduced memory consumption when handling huge input data.
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- mkspecs:
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* Explicitly enable float-divide-by-zero when configuring Qt with
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"-sanitize undefined". Before clang 9, it was implicitly enabled when
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-fsanitize=undefined was set.
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****************************************************************************
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* QtGui *
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****************************************************************************
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- QIcon:
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* [QTBUG-74252] If you call QIcon::setFallbackThemeName(), you should
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do it before the creation of the QGuiApplication; this now avoids
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a bug that resulted in the first loaded icons being empty.
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- HTML:
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* QTextDocument::toHtml() now exports letter and word spacing from the
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default format, if set, into the body tag. Such formatting can also
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be read back in.
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* [QTBUG-84981] Vertical alignment of images is now more compliant with
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the HTML standard: AlignBottom is the bottom of the line; AlignMiddle
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is between AlignTop and AlignBottom
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- Markdown:
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* [QTBUG-81306] QTextMarkdownImporter now correctly reads nested span
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formatting such as *italic ~~strikeout **bold `code` end**~~*
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including in link text and image alt text. The effects are mostly
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cumulative; however `code` blocks still completely override formatting.
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* [QTBUG-80603] QMarkdownWriter no longer tries to word-wrap code blocks;
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and code blocks nested in list items are formatted correctly.
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- Text:
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* Fixed a bug where glyphs would be clipped at very large sizes.
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****************************************************************************
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* QtTestLib *
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****************************************************************************
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- QCOMPARE:
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* QCOMPARE() now treats its values as equal when qFuzzyIsNull() is true
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for both of them.
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****************************************************************************
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* QtWidgets *
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****************************************************************************
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- QApplication:
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* Wheel events from a device that creates an event stream are correctly
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delivered to the widget that accepts the first wheel event in the
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stream.
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- QListView:
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* Moving selected items within a list view by drag'n'drop will maintain
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the selection of those items.
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- QMenu:
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* [QTBUG-84926] Fixed a regression that prevented pressing the mouse
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to open a menu, dragging over a menu item, and releasing to select it.
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* [QTBUG-76162] A submenu is always shown on its parent menu's screen.
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A text control's context menu is now always shown on the same screen.
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A menu on a QMenuBar can only be shown on the screen(s) where the
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menubar is visible.
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- QWidget:
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* setFocusProxy no longer moves focus away from a previously set focus
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proxy, restoring pre-Qt 5.13.1 behavior.
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****************************************************************************
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* Platform-specific changes *
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****************************************************************************
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- Android
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* [QTBUG-83089] Support setting mimetypes and and namefilters for Android
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native file dialog.
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- iOS
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* [QTBUG-83811] When text is selected using handles in a read-only
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control, it's now possible for the edit menu popover to be configured
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to have a Copy action instead of Paste. So far this is used in QtPDF.
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- Linux
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* QFileDialog will open directories through the portal if required
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version of xdg-desktop-portal is running on the system.
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- X11
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* [QTBUG-83446] Fixed a drag-and-drop crash due to an invalid reply in
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QXcbDrag.
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* [QTBUG-56218] When keyboard modifiers change during drag-and-drop,
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a QDragMoveEvent is sent even if the mouse doesn't actually move, to
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allow updating the drop action and cursor.
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* [QTBUG-85275] Window geometry coordinates are now allowed to be up to
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32767.
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* [QTBUG-25351] The new QT_QPA_SYSTEM_ICON_THEME variable can override
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the icon theme name.
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****************************************************************************
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* Third-Party Code *
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****************************************************************************
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- sqlite:
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* Upgraded to v3.32.1
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* Upgraded to v3.32.3
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- PCRE2 was updated to version 10.35.
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- libjpeg-turbo was updated to version 2.0.5
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- Documented the use of Khronos headers under MIT license in Qt GUI
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(ANGLE).
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