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=============================================================================
The changes below are pre Qt 4.7.0 alpha
PathView: offset property now uses range 0-1.0 rather than 0-100
ListView, GridView::positionViewAtIndex() gained a 'mode' parameter
Flickable: renamed viewportWidth -> contentWidth
Flickable: renamed viewportHeight -> contentHeight
Flickable: renamed viewportX -> contentX
Flickable: renamed viewportY -> contentY
Removed Flickable.reportedVelocitySmoothing
Removed Qt.playSound (replaced by SoundEffect element)
Removed Qt.closestAngle (use RotationAnimation instead)
Removed NumberFormatter
Removed DateTimeFormatter (use Qt.formatDateTime() instead)
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 }
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)
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
sectionExpression has been replaced by section.property, section.criteria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!)
C++ API
-------
QML_DEFINE_... definition macros, previously global macros, are replaced by
QML_REGISTER_... registration macros, 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.
QDeclarativeContext::addDefaultObject() has been replaced with
QDeclarativeContext::setContextObject()
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.
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.
=============================================================================
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
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