=============================================================================

The changes below are pre Qt 4.7.0 RC

Flickable:

   - overShoot is replaced by boundsBehavior enumeration

   - flickingHorizontally and flickingVertically properties added

   - movingHorizontally and movingVertically properties added

   - flickDirection is renamed flickableDirection

Component:

    - isReady, isLoading, isError and isNull properties removed, use

      status property instead

    - errorsString() renamed to errorString()

QList<QObject*> models no longer provide properties in model object.  The

properties are now updated when the object changes.  An object's property

"foo" may now be accessed as "foo", modelData.foo" or model.modelData.foo"

component.createObject has gained a mandatory "parent" argument

C++ API

-------

QDeclarativeExpression::value() has been renamed to

QDeclarativeExpression::evaluate()

The QDeclarativeExpression constructor has changed from

    QDeclarativeExpression(context, expression, scope)

to

    QDeclarativeExpression(context, scope, expression, parent = 0)

QML Viewer

------------

The standalone qml executable has been renamed back to Qml Viewer. Runtime warnings

can be now accessed via the menu (Debugging->Show Warnings).

=============================================================================

The changes below are pre Qt 4.7.0 beta 1

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