============================================================================= The changes below are pre Qt 4.7.0 RC Flickable: overShoot is replaced by boundsBehavior enumeration. Component: isReady, isLoading, isError and isNull properties removed, use status property instead C++ API ------- QDeclarativeExpression::value() has been renamed to QDeclarativeExpression::evaluate() ============================================================================= The changes below are pre Qt 4.7.0 beta TextEdit: wrap property is replaced by wrapMode enumeration. Text: wrap property is replaced by wrapMode enumeration. Removed Q-prefix from validators (IntValidator, DoubleValidator, and RegExpValidator) PathView: offset property now uses range 0-1.0 rather than 0-100 ListView, GridView::positionViewAtIndex() gained a 'mode' parameter Removed Qt.playSound (replaced by SoundEffect element) Removed Qt.closestAngle (use RotationAnimation instead) Removed NumberFormatter Removed DateTimeFormatter (use Qt.formatDateTime() instead) Using WebView now requires "import org.webkit 1.0" Using Particles now requires "import Qt.labs.particles 1.0" AnchorAnimation must now be used to animate anchor changes (and not NumberAnimation) Removed ParentAction (use ParentAnimation instead) ScriptAction: renamed stateChangeScriptName -> scriptName Animation: replace repeat with loops (loops: Animation.Infinite gives the old repeat behavior) AnchorChanges: use natural form to specify anchors (anchors.left instead of left) AnchorChanges: removed reset property. (reset: "left" should now be anchors.left: undefined) PathView: snapPosition replaced by preferredHighlightBegin, preferredHighlightEnd createQmlObject: Moved to the Qt object, now use Qt.createQmlObject() createComponent: Moved to the Qt object, now use Qt.createComponent() C++ API ------- QDeclarativeContext::addDefaultObject() has been replaced with QDeclarativeContext::setContextObject() Behavior and Animation syntax ----------------------------- Previously animations and behaviors could be "assigned" to properties like this: Item { x: Behavior {}; y: NumberAnimation {} } To make it more obvious that these are not regular value assignments a new "on" syntax has been introduced: Item { Behavior on x {}; NumberAnimation on y {} } Only the syntax has changed, the behavior is identical. EaseFollow renamed to SmoothedFollow --------------------------------------- This element shares the internal implementation with SmoothedAnimation, both providing the same easing function, but with SmoothedFollow it's easier to set a start value to animate intially and then start to follow, while SmoothedAnimation is still convenient for using inside Behaviors and Transitions. Add SmoothedAnimation element --------------------------------------- SmoothedAnimation inherits from NumberAnimaton and as a consequence SmoothedAnimation can be used inside Behaviors, as PropertySourceValues or in state transitions, like any other animation. The old EaseFollow properties changed to comply with the other declarative animations ('source' changed to 'to'), so now 'to' changes are not automatically 'followed' anymore. If you want to follow an hypothetical rect1, you should do now: Rectangle { color: "green" width: 60; height: 60; x: rect1.x - 5; y: rect1.y - 5; Behavior on x { SmoothedAnimation { velocity: 200 } } Behavior on y { SmoothedAnimation { velocity: 200 } } } instead of the old automatic source changed tracking: Rectangle { color: "green" width: 60; height: 60; EaseFollow on x { source: rect1.x - 5; velocity: 200 } EaseFollow on y { source: rect1.y - 5; velocity: 200 } } This is a syntax and behavior change. Script element removed ---------------------- Inline Script{} blocks have been deprecated, and will soon be removed entirely. If you used Script to write inline javascript code, it can simply be removed. For example Item { Script { function doSomething() {} } } becomes Item { function doSomething() {} } If you used Script to include external JavaScript files, you can replace the Script element with an “import” line. For example MouseArea { Script { source: “foo.js” } onClicked: foo() } becomes import “foo.js” as Foo MouseArea { onClicked: Foo.foo() } The “as” qualifier is mandatory for script imports (as opposed to type imports where it is optional). ============================================================================= The changes below are pre Qt 4.7.0 alpha Flickable: renamed viewportWidth -> contentWidth Flickable: renamed viewportHeight -> contentHeight Flickable: renamed viewportX -> contentX Flickable: renamed viewportY -> contentY Removed Flickable.reportedVelocitySmoothing Renamed MouseRegion -> MouseArea Connection: syntax and rename: Connection { sender: a; signal: foo(); script: xxx } Connection { sender: a; signal: bar(); script: yyy } becomes: Connections { target: a; onFoo: xxx; onBar: yyy } ListView::sectionExpression has been replaced by section.property, section.criteria ListModel --------- - types are strictly checked (previously, everything was a string) - foo: "bar" continues to work as before - foo: bar is now invalid, use foo: "bar" - foo: true is now a bool (not string "true") - foo: false is now a bool (not string "false" == true!) PropertyAnimation ------------------ matchProperties and matchTargets have been renamed back to properties and targets. The semantics are explained in the PropertyAnimation::properties documentation and the animation overview documentation. Easing curves and their parameters are now specified via dot properties: * easing.type : enum * easing.amplitude : real * easing.overshoot : real * easing.period : real For example: PropertyAnimation { properties: "y"; easing.type: "InOutElastic"; easing.amplitude: 2.0; easing.period: 1.5 } C++ API ------- QML_DEFINE_... definition macros, previously global macros, are replaced by qmlRegisterType registration functions, which must be called explicitly. C++ API users should also consider using the QmlExtensionPlugin (previously named QmlModulePlugin) as a cleaner mechanism for publishing libraries of QML types, or the upcoming application plugin features of the qmlviewer / qmlruntime / qml. QmlView ------- The API of QmlView has been narrowed and its role as a convenience class reinforced. - remove addItem() - remove clearItems() - use 'delete root()' - remove reset() - resizeContent -> enum ResizeMode { SizeViewToRootObject, SizeRootObjectToView } - remove setQml(), qml() - rename setUrl(), ur() to setSource(), source() - root() -> rootObject(), returns QGraphicsObject rather than QmlGraphicsItem - remove quit() signal -> use quit() signal of engine() - initialSize() signal removed - Added status() to determine status of the internal QmlComponent - removed execute() - setSource() will also execute the QML. ============================================================================= The changes below are pre-4.6.0 release. QML API Review ============== The QML API is being reviewed. This file documents the changes. Note that the changes are incremental, so a rename A->B for example may be followed by another subsequent rename B->C, if later reviews override earlier reviews. API Changes =========== Renamed Elements: LineEdit -> TextInput VerticalLayout -> Column HorizontalLayout -> Row VerticalPositioner -> Column HorizontalPositioner -> Row GridLayout -> Grid GridPositioner -> Grid Rect -> Rectangle FocusRealm -> FocusScope FontFamily -> FontLoader Palette -> SystemPalette Bind -> Binding SetProperties -> PropertyChanges RunScript -> StateChangeScript SetAnchors -> AnchorChanges SetPropertyAction -> PropertyAction RunScriptAction -> ScriptAction ParentChangeAction -> ParentAction VisualModel -> VisualDataModel Follow -> SpringFollow Renamed properties: Item: contents -> childrenRect MouseRegion: xmin -> minimumX MouseRegion: xmax -> maximumX MouseRegion: ymin -> minimumY MouseRegion: ymin -> maximumY Text elements: hAlign -> horizontalAlignment Text elements: vAlign -> verticalAlignment Text elements: highlightColor -> selectionColor Text elements: highlightedTextColor -> selectedTextColor Text elements: preserveSelection -> persistentSelection State: operations -> changes Transition: operations -> animations Transition: fromState -> from Transition: toState -> to Follow: followValue -> value Flickable: xPosition -> viewportX Flickable: yPosition -> viewportY Flickable: xVelocity -> horizontalVelocity Flickable: yVelocity -> verticalVelocity Flickable: velocityDecay -> reportedVelocitySmoothing Flickable: locked -> interactive (note reversal of meaning) Flickable: pageXPosition -> visibleArea.xPosition Flickable: pageYPosition -> visibleArea.yPosition Flickable: pageWidth -> visibleArea.widthRatio Flickable: pageHeight -> visibleArea.heightRatio WebView: idealWidth -> preferredWidth WebView: idealHeight -> preferredHeight WebView: status -> statusText WebView: mouseX -> clickX (parameter to onDoubleClick) WebView: mouseY -> clickY (parameter to onDoubleClick) WebView: cacheSize -> pixelCacheSize Repeater: component -> delegate Repeater: dataSource -> model ListView: current -> currentItem GridView: current -> currentItem ListView: wrap -> keyNavigationWraps ListView: autoHighlight -> highlightFollowsCurrentItem GridView: wrap -> keyNavigationWraps GridView: autoHighlight -> highlightFollowsCurrentItem Animation: targets -> matchTargets Animation: properties -> matchProperties Additions: MouseRegion: add "acceptedButtons" property MouseRegion: add "hoverEnabled" property MouseRegion: add "pressedButtons" property Timer: add start() and stop() slots WebView: add newWindowComponent and newWindowParent properties Loader: add status() and progress() properties Loader: add sourceComponent property Loader: add resizeMode property ListView: preferredHighlightBegin, preferredHighlightEnd ListView: strictlyEnforceHighlightRange Particles: Added emissionRate, emissionVariance and burst() Deletions: Column/VerticalPositioner: lost "margins" property Row/HorizontalPositioner: lost "margins" property Grid/Positioner/Layout: lost "margins" property WebView: lost "interactive" property (always true now) Flickable: removed "dragMode" property ComponentInstance: removed. Replaced by Loader.sourceComponent ListView: removed currentItemMode. Replaced by highligh range. ListView: removed snapPos. Particles: removed streamIn. Replaced by emissionRate Other Changes: ids must be lowercase: Text { id: foo }, not Text { id: Foo } Drag: axis becomes an enum with values "XAxis", "YAxis", "XandYAxis" Image: scaleGrid property removed. New item called BorderImage instead. KeyActions: changed to a Keys attached property on any item. KeyProxy: changed to a Keys.forwardTo property on any item. Script: now an intrinsic type in the language - cannot be assigned to properties - good: Item { Script { ... } } - bad: Item { resources: Script { ... } } Script: delay-loaded of the QML file until their source has been loaded (this only effects QML files loaded across the network.) Scope: declared properties shadow a property of the same name (was previously the reverse) ScriptAction and StateChangeScript: the script property now takes script rather than a string containing script (script: doSomething() rather than script: "doSomething()") QmlGraphicsItem::transformOrigin default changed from TopLeft to Center Animations used as PropertySourceValues are set to 'running: true' as default