diff options
Diffstat (limited to 'dist/changes-5.14.0')
| -rw-r--r-- | dist/changes-5.14.0 | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/dist/changes-5.14.0 b/dist/changes-5.14.0 new file mode 100644 index 0000000000..85f693b4ac --- /dev/null +++ b/dist/changes-5.14.0 @@ -0,0 +1,372 @@ +Qt 5.14 introduces many new features and improvements as well as bugfixes +over the 5.13.x series. For more details, refer to the online documentation +included in this distribution. The documentation is also available online: + +https://doc.qt.io/qt-5/index.html + +The Qt version 5.14 series is binary compatible with the 5.13.x series. +Applications compiled for 5.13 will continue to run with 5.14. + +Some of the changes listed in this file include issue tracking numbers +corresponding to tasks in the Qt Bug Tracker: + +https://bugreports.qt.io/ + +Each of these identifiers can be entered in the bug tracker to obtain more +information about a particular change. + +**************************************************************************** +* QtQml * +**************************************************************************** + + - On Android, QML plugins are loaded directly from the APK libs dir and + use qrc:/android_rcc_bundle/qml to search for QML files. + + - [QTBUG-38913] Added ability to import static qml plugins with CMake + builds using the new QT5_IMPORT_QML_PLUGINS function. + + - The NaN obtained by Math.pow(+/-1, +/-infinity) and + (+/-1)**(+/-infinity) is now quiet rather than signalling. + + - It is now possible to specify types for method parameters and their + return value in QML (basic and object types), using TypeScript-like + syntax with a colon separator. The syntax for QML declared signals + supports the same style. + + - QML Binding elements now support restoring previous values + of the bound property when the binding is disabled. This will be the + default behavior in Qt 6.0. Reliance on the old behavior of only + restoring binding, not literal values will results in a warning beginning + with Qt 5.15. + + - The regular expression engine was updated, causing somewhat better + compliance with the ECMAScript specification. + + - [QTBUG-74190] Fixed a crash due to combination of aggressive GC with logging. + Also, the qt.qml.gc.* logging rules don't produce false warnings about huge + amounts of lost memory anymore. + + - [QTBUG-75007] Usage of singletons from QML engines in different threads + does not cause race conditions anymore. + + - The JIT compiler is now a configurable feature. You can pass + -no-feature-qml-jit to configure in order to skip it, or -feature-qml-jit + in order to build it for platforms where it's disabled by default, e.g. + iOS and tvOS. + + - [QTBUG-49080][QTBUG-78955] You can now interrupt a QJSEngine running a + JavaScript program by setting its isInterrupted flag from a different thread. + + - qmlscene will not run into an infinite loop anymore if you pass a QML + document without any executable code. + + - You can configure the maximum sizes of the JavaScript and the garbage + collector stacks now, using the QV4_JS_MAX_STACK_SIZE and + QV4_GC_MAX_STACK_SIZE environment variables. + + - [QTBUG-76346] Context properties carrying QObjects are automatically + reset when the objects are destroyed now. + + - [QTBUG-40487] You can now use Component properties in Binding elements. + + - [QTBUG-76932] Changing sourceComponent in a Loader does not delete + C++-owned objects anymore. + + - qmllint can now check for unqualified access to to properties of the + root object and undeclared signal parameters. + + - [QTBUG-77096] You can use generator functions in QML components now. + + - You can and should use plain JavaScript functions as signal handlers in + Connections elements now. This avoids the overhead of the custom parser + that otherwise needs to run for each Connections element, and forces you + to specify the signal parameters you are going to use. + + - You can pass a set of initial properties to QQmlApplicationEngine, + QQmlComponent, and QQuickView now. Those will be used as defaults in any + subsequent instantiation of top-level QML objects. + + - Anonymous types should be registered via the new qmlRegisterAnonymousType() + function now, rather than via the parameter-less qmlRegisterType(). That + is, you should specify a URI and a major version for your type. + + - [QTBUG-74087] The QML parser can parse more complex JavaScript code now + without overflowing the stack. This allows for deeper list nesting in QML. + + - [QTBUG-76021] instanceof does not confuse derived types with no additional + properties with their parent types anymore. + + - [QTBUG-78943] Binding elements will not randomly convert strings to other + types anymore. + + - [QTBUG-48150] You can use aliases of "depth" 2 now. That is, something like + "property alias topMargin: myItem.anchors.topMargin" works now. + + - [QTBUG-78325] The "color" type has a property "valid" now. + + - [QTBUG-78044] The qmlprofiler command line tool's interactive mode is more + stable now. + + - [QTBUG-48809] Fixed a warning about non-relative paths in qmldir files. + We now permit the use of resource urls in qmldir files to allow a plugin + to include its .qml files in resources, optionally compiled ahead of time. + + - [QTBUG-79614] QQmlProperty now handles reads of QQmlPropertyMap correctly. + + - [QTBUG-79443] In the debugger, we now avoid loading cache files, so that + JavaScript breakpoints keep working after the first run. + + - [QTBUG-55259] qmlimportscanner now scans resources in qrc files. + + - [QTBUG-78486] Calling a function with 14 arguments no longer crashes. + + - [QTBUG-78721] Fixed handling of properties with interface type in bindings. + + - [QTBUG-71078] Increased the QML loader thread's stack size to avoid problems + parsing deeply nested QML/JS files on some platforms. + + - [QTBUG-72442] Fixed float value binding to an integer (including NaN values). + + - [QTBUG-78566] A warning is emitted when overriding a declared Binding from + elsewhere. The Binding stays active and updates the target property again + on the next change. + + - [QTBUG-77027] Fixed nullptr handling in Binding. + + - [QTBUG-78859] Fixed a property cache memory leak. + + - [QTBUG-78865] Fixed a memory leak due to declaring unused scripts in + qmldir files. + + - [QTBUG-78706] Fixed inconsistent daylight saving time behavior by + converting QTime to V4 Date on a date with no DST in force. + + - [QTBUG-78098] QQmlTypeLoader now prevents more trivial cycles. + + - [QTBUG-77751] Fixed the translation context in Qt.include()d JS files. + + - [QTBUG-76514] Avoid duplicate singleton creation. + + - [QTBUG-77237] Using an enum in a switch statement performs much better. + + - [QTBUG-76866] Fixed a crash due to inconsistency between + isValueType() and valueType()'s return value. + + - [QTBUG-77954] Semicolon is always allowed after property declaration. + + - [QTBUG-73512] Fixed a bug with use of resource paths in + QQmlEngine::setImportPathList(). + + - [QTBUG-76303] When converting from number to string, we now keep + double precision if the number of significant digits exceeds six, so that + precision isn't lost if the string is converted back to a number. + + - [QTBUG-76838] Binding.when is stored as boolean to support primitive values. + + - [QTBUG-76033] Fixed several bugs in frozen(), sealed(), nonExtensible() + and propertiesFrozen(). + + - [QTBUG-75983] Fixed a crash in XMLHttpRequest::open(). + + - [QTBUG-49975] Warn rather than crashing in case of invalid top-level + parallel states. + + - [QTBUG-73786] We now filter out duplicate entries in Object.keys(). + + - [QTBUG-73491] Added QQmlInstanceModel::variantValue() to enable ComboBox.valueRole. + + - [QTBUG-74348] Fixed memory leaks due to value type provider deletion order. + + - There are two new functions to register singleton types and help you to + get rid of context properties: + * qmlRegisterSingletonType() has an overload taking a std::function now, + instead of a bare function pointer. Therefore, you can capture context + now when creating singletons. + * qmlRegisterSingletonInstance() directly passes a single instance of the + type to be used in all QML engines. No QML engine assumes ownership of + such a singleton and any concurrent access has to be handled by the + object itself. + + - qml Runtime tool: + * [QTBUG-53557] The QML Runtime tool now accepts command-line arguments + in double-dash GNU style as well as the old single-dash style. + * [QTBUG-53557] The QML Runtime tool now has default behavior matching + qmlscene when the root QML object is an Item: it will be wrapped in a + Window which will resize the Item when the Window is resized. But you + can alternatively use the --config resizeToItem option, resulting in + the same behavior as qmlscene --resizeToRoot: resizing the root Item + programmatically causes the wrapping Window to be resized. Behavior + can still be customized in other ways using the --config option with + an external QML configuration file. + * The QML Runtime tool --quiet option now disables categorized logging + in addition to qDebug, qInfo, qWarning and qFatal, except for some + early QPA-level categorized logging that occurs during application + construction. You can still override specific categories by setting + QT_LOGGING_CONF or QT_LOGGING_RULES. + * [QTBUG-78828] Fixed a crash at exit when the qmldebugger channel is + connected. + + - qmlplugindump: + * [QTBUG-78745] If given a "--strict" argument, qmlplugindump will check + the URI as exact match; whereas by default it will ignore the given + major version, as before. + * [QTBUG-78744] qmlplugindump no longer ignores base classes of QML files + registered as components. + + - Important Behavior Changes: + * QRegularExpression is now supported the same way QRegExp was in QML. + QJSValue::toVariant() creates a QRegularExpression variant rather than + a QRegExp one from a JavaScript regular expression now. + * The accidentally exported function qmlRegisterBaseTypes() was removed. + * QJSEngine::toScriptValue will now return correct JavaScript objects in + more cases, for example, for gadget types like QPointF. + * QJSEngine::toScriptValue now uses the same behavior as the rest of the + engine when building JavaScript values, which will cause the types of + some returned JavaScript objects to change. For instance, string lists + are now returned as sequence objects, not array objects, and QChar now + constructs a JavaScript string. + * [QTBUG-75176] Attached properties are internally not identified by + integer IDs anymore, but rather by the functions used to produce them. + Using the integer indexes is a bad idea because the same metatype can + be registered as several different QML types and the integer IDs refer + to the QML types. Therefore, qmlAttachedPropertiesObjectById() and the + overload of qmlAttachedPropertiesObject() taking an integer ID are + deprecated. + * We expect QMetaObject revisions and import minor versions to be equal. + That is, when registering a revision X of a metaobject as QML type for + a version Y.Z of your module, X should equal Z. This is not enforced, + yet, but future versions of Qt will build on this assumption. + +**************************************************************************** +* QtQuick * +**************************************************************************** + + - Qt Quick is now able to render via Vulkan, Metal, and Direct 3D 11. The + new rendering path is currently a preview feature and has to be opted-in + to explicitly. + + - Drag and Drop: + * [QTBUG-30305] When DropAreas intersect, the higher z-order item now + steals the drop. + * [QTBUG-72045] Fixed a crash when using an image provider url with Drag. + + - DelegateModel: + * [QTBUG-63477] DelegateModel.delegate is now a notifying property, + and an Item View with model: DelegateModel { } is now refilled when + the delegate is changed. + + - Event Handlers: + * Added WheelHandler, which handles mouse wheel rotation by modifying + arbitrary Item properties. + * [QTBUG-75661] Added DragHandler.snapMode which can be used to configure + conditions under which the dragged item is snapped to the cursor. The + default mode is SnapAuto. The old behavior can be obtained through the + SnapIfPressedOutsideTarget mode. + + - Image: + * [QTBUG-77506] Image and BorderImage now have currentFrame and + frameCount properties which can be used to step through the frames of + multi-page image formats such as TIFF, WEBP and ICO (and PDF in the + future). + * [QTBUG-55027] Any URL interceptor is applied to the source binding. + * [QTBUG-76527] ImageProvider is kept alive while in use. + + - FolderListModel: + * update the values of some properties when setting new values to them + + - Layouts: + * [QTBUG-67204] GridLayout now warns rather than asserting when an + invalid row or column is specified. + * [QTBUG-79359] GridLayout now emits appropriate signals for + layoutDirection, columnSpacing, and rowSpacing changes. + + - ListModel: + * [QTBUG-63569] We now emit a warning if an object with an undefined or + null member is added. + * [QTBUG-79083] JSON.stringify(model.get(i)) now works correctly when the + row contains a nested list model. + + - Loader: + * [QTBUG-79435] Loader now clears all initial properties when changing source. + + - MouseArea: + * [QTBUG-75993] mouseX and mouseY will now be synchronized after dragging + the target item. + * [QTBUG-77983] The containsMouse property will not become true when an + invisible mousearea become visible, if the enabled property is false or + its parent item is not enabled. + + - MultiPointTouchArea: + * [QTBUG-77142] When a stationary touchpoint contains some "interesting" + property change (pressure or velocity, so far), it is delivered normally, + and MultiPointTouchArea will react to that. + + - Particles: + * [QTBUG-54673] Fixed image particle flickering due to dynamic creation + of Emitter objects. + + - Path and Shapes: + * Added Path.scale property to scale a path prior to rendering via + Shape or to scale the movement in PathView. The width and height + can be different, to achieve anisotropic scaling. + * Added PathPolyline, to render an array, list or vector of QPointF, + or a single QPolygonF. + * Added PathMultiLine, to render an array, list or vector of + polylines or QPolygonF. + * Exposed QQuickPath::pointAtPercent as invokable in QML. + * [QTBUG-77332] Fixed incorrect colors when shapes change scene. + + - PathView: + * [QTBUG-77173] When the mouse is pressed while PathView is already moving, + PathView now grabs rather than allowing the delegate to handle it. The + position will then snap to the nearest delegate on release, as usual. + * [QTBUG-77173] If the user drags quickly, pauses, and then releases, + the calculated velocity is reduced according to a linear decay model + up to 50ms (and zero after that), to prevent excessive movement when + the user intended the pause to stop the movement. + + - TableView: + * [QTBUG-79395] forceLayout() now rebuilds the table if the size of the + model has changed, to avoid a crash. + + - Text: + * Markdown (GitHub dialect by default) is now a supported format, when + textFormat: Text.MarkdownText is declared. All features such as + hyperlinks, images, tables, lists, checklists, etc. are supported. + + - TextEdit: + * Markdown (GitHub dialect by default) is now a supported format, when + textFormat: TextEdit.MarkdownText is declared. If it contains checkboxes, + the user can click on them to toggle the states. + * [QTBUG-14769][QTBUG-50482] The mouse cursor is now IBeamCursor by default, + or PointingHandCursor when the mouse is hovering over a checkbox or a + hyperlink. However this can be overridden in C++. + * [QTBUG-74745] Fixed overlapping text after line deletion. + + - TextInput: + * [QTBUG-77814] Fixed text selection logic after insert() and remove(). + + - [QTBUG-79573] Fixed application deadlock when an item is reparented + to contentItem in a user-defined windowChanged handler, e.g. on exit. + + - [QTBUG-78304] A ShortCutOverride event is now sent even when receiving a + non-spontaneous key press (e.g. from sendEvent()), so that Shortcut reacts. + + - [QTBUG-76749] Fixed a crash when using an animation while destroying an item. + +**************************************************************************** +* Qt Labs Animation * +**************************************************************************** + + - Added the BoundaryRule QML type, a PropertyValueInterceptor that + restricts the range of values a numeric property can have, applies + "resistance" when the value is overshooting, and provides the ability to + animate it back within range. This is especially useful in combination + with WheelHandler to limit its range of motion or adjustment. + +**************************************************************************** +* Qt Labs QML Models * +**************************************************************************** + + - Added the TableModel QML type, a JavaScript-based model for the new + TableView. |