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/*!
\page qtquick-qmltypereference.html
\title Qt Quick QML Types
\ingroup qmlmodules
\brief Description of the QML types provided by the Qt Quick module

The \c QtQuick QML module provides a variety of QML types for creating user
interfaces and applications with QML.  This page lists every QML type provided
by this module, organized according to category and purpose.


\target importing-qtquick
\section1 Importing Qt Quick

The types provided by the \l {Qt Quick} module are only available in a QML document
if that document imports the \c QtQuick namespace.

The current version of the \c QtQuick module is version 2.0, and thus it may be
imported via the following statement:

\qml
import QtQuick 2.0
\endqml

See the \l {Qt Quick} module documentation for more
information about the concepts which are central to \c QtQuick.

\section2 Submodules

    Qt Quick includes several submodules which contain additional types.

    \list
    \li \l{Qt Quick XmlListModel QML Types}{XML List Model} - contains types
    for creating models from XML data
    \li \l{Qt Quick Local Storage QML Types}{Local Storage} - a submodule
    containing a JavaScript interface for an SQLite database
    \li \l{Qt Quick Particles QML Types}{Particles} - provides a particle
    system for QML applications
    \li \l{Qt Quick Window QML Types}{Window} - contains types for creating
    top-level windows and accessing screen information
    \li \l{Qt Quick Dialogs QML Types}{Dialogs} - contains types for creating and
    interacting with system dialogs
    \li \l{Qt Quick Controls QML Types}{Controls} - provides a set of reusable
    UI components
    \li \l{Qt Quick Layouts QML Types}{Layouts} - contains types that are used
    to arrange items in the user interface
    \endlist
\target basic-types
\section1 Basic Types

There are a number of basic types that are
\l{qtqml-typesystem-basictypes.html#basic-types-provided-by-the-qml-language}
{supported by default in the QML language}.

In addition, the \c QtQuick module provides the following basic types:
\annotatedlist qtquickbasictypes
\target object-types
\section1 Object Types

All of the object types provided by \c QtQuick are based on the \l{Item} type,
which itself derives from \l{QtQml::QtObject}{QtObject}.  \l{qtqml-typereference-topic.html#object-types}
{QML object types} provided by the Qt QML module
(such as \l{QtQml::QtObject}{QtObject} and \l{QtQml::Component}{Component}) are also available when
you import \c QtQuick.
\target visual-types
\section2 Visual Types

\list
\li \l {Item} - Basic visual object type inherited by visual object types (visual items)
\li \l {Rectangle} - A rectangle type
\li \l {Image} - For incorporating bitmaps into a scene
\li \l {BorderImage} - Allows the use of images as borders
\li \l {AnimatedImage} - For playing animations stored as an animated GIF
\li \l {AnimatedSprite} - For playing animations stored as a series of frames
\li \l {SpriteSequence} - For playing and transitioning between multiple animations stored as a series of frames
\li \l {Text} - For inserting formatted text into a scene
\li \l {Window} - Provides a top-level window
\endlist

Visual Item Utility
\list
\li \l {Accessible} - Attached property to make components accessible
\li \l {Gradient} - For defining a color gradient
\li \l {GradientStop} - Used to define a color within a \l {Gradient}
\li \l {SystemPalette} - Provides access to the Qt palettes
\li \l {Screen} - Provides information about the screen on which an \l {Item} is displayed
\li \l {Sprite} - Specifies sprite animations for other Items to display
\li \l {FontLoader} - Loads fonts by name or URL
\endlist

Visual Item Generation

\list
\li \l {Repeater} - Uses a model to create multiple Item instances
\li \l {Loader} - Eases on-demand loading of Items
\endlist

Visual Item Transformations
\list
\li \l {Transform} - Allows specification of advanced transformations on Items
\li \l {Scale} - Assigns item scaling behaviors
\li \l {Rotation} - Assigns item rotation behaviors
\li \l {Translate} - Assigns item translation behaviors
\endlist

\target user-input
\section2 User Input

\list
\li \l {MouseArea} - Sets up an area for mouse interaction
\li \l {Keys} - Provides components with attached properties to handle key input.
\li \l {KeyNavigation} - Supports key navigation by arrow keys
\li \l {FocusScope} - Mediates keyboard focus changes
\li \l {Flickable} - Provides a surface that can be "flicked"
\li \l {PinchArea} - Enables simple pinch gesture handling
\li \l {MultiPointTouchArea} - Enables handling of multiple touch points
\li \l {Drag} - For specifying drag and drop events for visual items
\li \l {DropArea} - For specifying drag and drop event handling in an area
\li \l {TextInput} - Captures user key input
\li \l {TextEdit} - Displays multiple lines of editable formatted text
\endlist

Text Input Utility

\list
\li \l {IntValidator} - Validates values as integers
\li \l {DoubleValidator} - Validates real values
\li \l {RegExpValidator} - Validator for string regular expressions
\endlist

User Input Events
\list
\li \l {TouchPoint} - Describes a touch point in a MultiPointTouchArea
\li \l {PinchEvent} - Specifies information about a pinch event
\li \l {WheelEvent} - Provides information about a mouse wheel event
\li \l {MouseEvent} - Provides information about a mouse click event
\li \l {KeyEvent} - Provides information about a key press event
\li \l {DragEvent} -Provides information about a drag event
\endlist
\target positioning
\section2 Positioning

\list
\li \l {Positioner} - Attached property which provides information about where an Item has been positioned
\li \l {Column} - Arranges its children vertically
\li \l {Row} - Arranges its children horizontally
\li \l {Grid} - Positions its children in a grid
\li \l {Flow} - Positions its children with wrapping support
\li \l {LayoutMirroring} - Attached property used to mirror layout behavior
\endlist
\target states-transitions-and-animations
\section2 States, Transitions and Animations

States
\list
\li \l {State} - Defines sets of configurations of objects and properties
\li \l {PropertyChanges} - Describes property changes within a state
\li \l {StateGroup} - Contains a set of states and state transitions
\li \l {StateChangeScript} - Allows script binding in a state
\li \l {ParentChange} - Re-parent an Item in a state change
\li \l {AnchorChanges} - Change the anchors of an item in a state
\endlist

Transitions and Animations
\list
\li \l {Transition} - Animates transitions during state changes
\li \l {ViewTransition} - Specifies items under transition in a view
\li \l {SequentialAnimation} - Runs animations sequentially
\li \l {ParallelAnimation} - Runs animations in parallel
\li \l {Behavior} - Specifies a default animation for property changes
\li \l {PropertyAction} - Sets immediate property changes during animation
\li \l {PauseAnimation} - Introduces a pause in an animation
\li \l {SmoothedAnimation} - Allows a property to smoothly track a value
\li \l {SpringAnimation} - Allows a property to track a value in a spring-like motion
\li \l {ScriptAction} - Runs scripts during an animation
\endlist

Type-specific Animations
\list
\li \l {PropertyAnimation} - Animates property changes
\li \l {NumberAnimation} - Animates properties of type qreal
\li \l {Vector3dAnimation} - Animates properties of type QVector3d
\li \l {ColorAnimation} - Animates color changes
\li \l {RotationAnimation} - Animates rotations
\li \l {ParentAnimation} - Animates parent changes
\li \l {AnchorAnimation} - Animates anchor changes
\li \l {PathAnimation} - Animates position along a path
\endlist

Lower-level Animation Types
\list
\li \l {PathInterpolator} - Allows manual animation along a path
\li \l {AnimationController} - Allows manual control of animation progress
\endlist

Animation paths
\list
\li \l {Path} - Defines a path used by \l {PathView}
\li \l {PathLine} - Defines a line in \l {Path}
\li \l {PathQuad} - Defines a quadratic Bezier curve in a \l {Path}
\li \l {PathCubic} - Defines a cubic Bezier curve in a \l {Path}
\li \l {PathArc} - Defines an arc in a \l {Path}
\li \l {PathCurve} - Defines a point on a Catmull-Rom curve in a \l {Path}
\li \l {PathSvg} - Defines a sub-path specified as a SVG path data string in a \l {Path}
\li \l {PathAttribute} - Allows the setting of attributes along a \l {Path}
\li \l {PathPercent} - Modifies the item distribution along a \l {Path}
\endlist
\target model-view-types-and-data-storage-and-access
\section2 Model/View Types And Data Storage And Access

QML Lists and Models

The \l{Qt QML Models QML Types}{Qt QML Models} submodule provides the types for
structuring data with models and lists.
\list
\li \l ListModel - Defines a list of data
\li \l ListElement - Defines a data item in a \l ListModel
\endlist

These QML types are part of Qt Quick for backwards compatibility, but for
newer applications, \l{Qt QML Models QML Types}{Qt QML Models} provides
the same functionality.
\list
\li \l {VisualItemModel} - Contains items that already defines its own visual delegate
\li \l {VisualDataModel} - Encapsulates a model and a delegate
\li \l {VisualDataGroup} - Encapsulates a filtered set of visual data items
\endlist

XML Lists
\list
\li \l {XmlListModel} - Specifies a model using XPath expressions
\li \l {XmlRole} - Specifies a role for an \l {XmlListModel}
\endlist

Views
\list
\li \l {ListView} - Provides a list visualization of a model
\li \l {GridView} - Provides a grid visualization of a model
\li \l {PathView} - Visualizes a model's contents along a path. See \l {Path Definition}{Path Elements} for more information.
\li \l {Package} - Collection that enables sharing of items within different views
\endlist

Data Storage
\list
\li \l {Qt Quick Local Storage QML Types}{QtQuick.LocalStorage 2} - Singleton
type providing simplified SQL access
\endlist
\target graphical-effects
\section2 Graphical Effects

\list
\li \l {Flipable} - Provides a surface that produces "flipping" effects
\li \l {ShaderEffect} - Allows GLSL shaders to be used as graphical effects
\li \l {ShaderEffectSource} - Usable as a texture in ShaderEffect
\li \l {GridMesh} - Generates a grid mesh of vertices for use by ShaderEffect
\li The \l{Qt Quick Particles QML Types}{QtQuick.Particles 2} module provides a
set of Particle System types for Qt Quick 2
\endlist
\target convenience-types
\section2 Convenience Types

\list
\li \l {Connections} - Explicitly connects signals and signal handlers
\li \l {Binding} - Binds any value to any property
\li \l {Timer} - Provides timed triggers
\li \l {WorkerScript} - Enables the use of threads in a Qt Quick application
\endlist
\target canvas-similar-to-html5-canvas
\section2 Canvas (similar to HTML5 canvas)

\list
\li \l {Canvas} - Provides a 2D canvas type similar to the HTML5 canvas
\li \l {Context2D} - Provides 2D context for shapes on a Canvas item
\li \l {CanvasGradient} - Allows specification of a gradient on a Canvas
\li \l {CanvasPixelArray} - Allows specification of a pixel array for use in a Canvas
\li \l {CanvasImageData} - Allows specification of image data for use in a Canvas
\li \l {TextMetrics} - Provides text and font measurement data for use in a Canvas
\endlist

*/

/*!
\qmlmodule QtQuick 2.2
\brief The Provides graphical primitives for use in QML.

The \l{Qt Quick} module provides graphical primitive types. They can be used with the following import
\code
import QtQuick 2.2
\endcode

For a more detailed listing of types in the \c {QtQuick} import, see the \l{Qt Quick QML Types} page.
For more details about the module itself, see the \l{Qt Quick} module page.
*/

/*!
    \qmlbasictype color
    \ingroup qtquickbasictypes
    \brief an ARGB color value.
    \target colorbasictypedocs

    The \c color type refers to an ARGB color value. It can be specified in a number of ways:

    \list
    \li By a \l{http://www.w3.org/TR/SVG/types.html#ColorKeywords}{SVG color name}, such as
        "red", "green" or "lightsteelblue".
    \li By a hexadecimal triplet or quad in the form \c "#RRGGBB" and \c "#AARRGGBB"
        respectively. For example, the color red corresponds to a triplet of \c "#FF0000"
        and a slightly transparent blue to a quad of \c "#800000FF".
    \li Using the \l{QtQml::Qt::rgba()}{Qt.rgba()}, \l{QtQml::Qt::hsla()}{Qt.hsla()},
        \l{QtQml::Qt::darker()}{Qt.darker()}, \l{QtQml::Qt::lighter()}{Qt.lighter()} or
        \l{QtQml::Qt::tint()}{Qt.tint()} functions.
    \endlist

    Example:

    \div{float-right}
    \inlineimage declarative-colors.png
    \enddiv
    \snippet qml/colors.qml colors

    Additionally, a color type has \c r, \c g, \c b and \c a properties that refer to the
    red, green, blue and alpha values of the color, respectively:

    \qml
    Text {
        color: "red"

        // prints "1 0 0 1"
        Component.onCompleted: console.log(color.r, color.g, color.b, color.a)
    }
    \endqml

    To test color values for equality, use the \l{QtQml::Qt::colorEqual()}{Qt.colorEqual()}
    function.  This allows colors to be accurately compared whether they are in property
    form or in any of the acceptable string specification forms.

    When integrating with C++, note that any QColor value
    \l{qtqml-cppintegration-data.html}{passed into QML from C++} is automatically
    converted into a \c color value, and vice-versa.

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype font
    \ingroup qtquickbasictypes
    \brief a font value with the properties of QFont.
    \target fontbasictypedocs

    The \c font type refers to a font value with the properties of QFont.

    The most commonly used properties are:

    \list
    \li \l string \c font.family
    \li \l bool \c font.bold
    \li \l bool \c font.italic
    \li \l bool \c font.underline
    \li \l real \c font.pointSize
    \li \l int \c font.pixelSize
    \endlist

    If both \c pointSize and a \c pixelSize are specified, \c pixelSize will be used.

    The following properties are also available:

    \list
    \li \l enumeration \c font.weight
    \li \l bool \c font.overline
    \li \l bool \c font.strikeout
    \li \l enumeration \c font.capitalization
    \li \l real \c font.letterSpacing
    \li \l real \c font.wordSpacing
    \endlist

    Example:
    \qml
    Text { font.family: "Helvetica"; font.pointSize: 13; font.bold: true }
    \endqml

    When integrating with C++, note that any QFont value
    \l{qtqml-cppintegration-data.html}{passed into QML from C++} is automatically
    converted into a \c font value, and vice-versa.

    This basic type is provided by the QtQuick import.

    Font weighting is classified on a scale from 0 to 99, where a weight of 0 is ultralight,
    and 99 is extremely black. The following values are supported:

    \table
    \row
        \li \c Font.Light
        \li 25
    \row
        \li \c Font.Normal
        \li 50
    \row
        \li \c Font.DemiBold
        \li 63
    \row
        \li \c Font.Bold
        \li 75
    \row
        \li \c Font.Black
        \li 87
    \endtable

    Capitalization supports the following values:

    \table
    \row
        \li \c Font.MixedCase
        \li No capitalization change is applied.
    \row
        \li \c Font.AllUppercase
        \li Alters the text to be rendered in all uppercase type.
    \row
        \li \c Font.AllLowercase
        \li Alters the text to be rendered in all lowercase type.
    \row
        \li \c Font.SmallCaps
        \li Alters the text to be rendered in small-caps type.
    \row
        \li \c Font.Capitalize
        \li Alters the text to be rendered with the first character of each word as an uppercase character.
    \endtable

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype vector2d
    \ingroup qtquickbasictypes

    \brief A vector2d type has x and y attributes.

    A \c vector2d type has \c x and \c y attributes, otherwise
    it is similar to the \c vector3d type.  Please see the
    documentation about the \c vector3d type for more information.

    To create a \c vector2d value, specify it as a "x,y" string,
    or define the components individually, or compose it with
    the Qt.vector2d() function.

    The vector2d type has the following idempotent functions which can be
    invoked in QML:
    \table
        \header
        \li Function Signature
        \li Description
        \li Example

        \row
        \li real dotProduct(vector2d other)
        \li Returns the scalar real result of the dot product of \c this vector2d with the \c other vector2d
        \li \code
var a = Qt.vector2d(1,2);
var b = Qt.vector2d(3,4);
var c = a.dotProduct(b);
console.log(c); // 11
            \endcode

        \row
        \li vector2d times(vector2d other)
        \li Returns the vector2d result of multiplying \c this vector2d with the \c other vector2d
        \li \code
var a = Qt.vector2d(1,2);
var b = Qt.vector2d(3,4);
var c = a.times(b);
console.log(c.toString()); // QVector2D(3, 8)
            \endcode

        \row
        \li vector2d times(real factor)
        \li Returns the vector2d result of multiplying \c this vector2d with the scalar \c factor
        \li \code
var a = Qt.vector2d(1,2);
var b = 4.48;
var c = a.times(b);
console.log(c.toString()); // QVector2D(4.48, 8.96)
            \endcode

        \row
        \li vector2d plus(vector2d other)
        \li Returns the vector2d result of the addition of \c this vector2d with the \c other vector2d
        \li \code
var a = Qt.vector2d(1,2);
var b = Qt.vector2d(3,4);
var c = a.plus(b);
console.log(c.toString()); // QVector2D(4, 6)
            \endcode

        \row
        \li vector2d minus(vector2d other)
        \li Returns the vector2d result of the subtraction of \c other vector2d from \c this vector2d
        \li \code
var a = Qt.vector2d(1,2);
var b = Qt.vector2d(3,4);
var c = a.minus(b);
console.log(c.toString()); // QVector2D(-2, -2)
            \endcode

        \row
        \li vector2d normalized()
        \li Returns the normalized form of \c this vector
        \li \code
var a = Qt.vector2d(1,2);
var b = a.normalized();
console.log(b.toString()); // QVector2D(0.447214, 0.894427)
            \endcode

        \row
        \li real length()
        \li Returns the scalar real value of the length of \c this vector2d
        \li \code
var a = Qt.vector2d(1,2);
var b = a.length();
console.log(b.toString()); // 2.23606797749979
            \endcode

        \row
        \li vector3d toVector3d()
        \li Returns the vector3d result of converting \c this vector2d to a vector3d
        \li \code
var a = Qt.vector2d(1,2);
var b = a.toVector3d();
console.log(b.toString()); // QVector3D(1, 2, 0)
            \endcode

        \row
        \li vector4d toVector4d()
        \li Returns the vector4d result of converting \c this vector2d to a vector4d
        \li \code
var a = Qt.vector2d(1,2);
var b = a.toVector4d();
console.log(b.toString()); // QVector4D(1, 2, 0, 0)
            \endcode

        \row
        \li bool fuzzyEquals(vector2d other, real epsilon)
        \li Returns true if \c this vector2d is approximately equal to the \c other vector2d.
            The approximation will be true if each attribute of \c this is within \c epsilon
            of \c other.  Note that \c epsilon is an optional argument, the default \c epsilon
            is 0.00001.
        \li \code
var a = Qt.vector2d(1,2);
var b = Qt.vector2d(1.0001, 1.9998);
var c = a.fuzzyEquals(b);        // default epsilon
var d = a.fuzzyEquals(b, 0.005); // supplied epsilon
console.log(c + " " + d); // false true
            \endcode
\endtable

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype vector3d
    \ingroup qtquickbasictypes
    \brief a value with x, y, and z attributes.

    The \c vector3d type refers to a value with \c x, \c y, and \c z attributes.

    To create a \c vector3d value, specify it as a "x,y,z" string:

    \qml
    Rotation { angle: 60; axis: "0,1,0" }
    \endqml

    or with the \l{QtQml::Qt::vector3d()}{Qt.vector3d()} function:

    \qml
    Rotation { angle: 60; axis: Qt.vector3d(0, 1, 0) }
    \endqml

    or as separate \c x, \c y, and \c z components:

    \qml
    Rotation { angle: 60; axis.x: 0; axis.y: 1; axis.z: 0 }
    \endqml

    Each attribute of a vector3d value is stored internally as a
    single-precision floating point number (\c float).

    When integrating with C++, note that any QVector3D value
    \l{qtqml-cppintegration-data.html}{passed into QML from C++} is automatically
    converted into a \c vector3d value, and vice-versa.

    The vector3d type has the following idempotent functions which can be
    invoked in QML:
    \table
        \header
        \li Function Signature
        \li Description
        \li Example

        \row
        \li vector3d crossProduct(vector3d other)
        \li Returns the vector3d result of the cross product of \c this vector3d with the \c other vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(4,5,6);
var c = a.crossProduct(b);
console.log(c.toString()); // QVector3D(-3, 6, -3)
            \endcode

        \row
        \li real dotProduct(vector3d other)
        \li Returns the scalar real result of the dot product of \c this vector3d with the \c other vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(4,5,6);
var c = a.dotProduct(b);
console.log(c); // 32
            \endcode

        \row
        \li vector3d times(matrix4x4 matrix)
        \li Returns the vector3d result of transforming \c this vector3d with
            the 4x4 \c matrix with the matrix applied post-vector
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.matrix4x4(4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19);
var c = a.times(b);
console.log(c.toString()); // QVector3D(0.774194, 0.849462, 0.924731)
            \endcode

        \row
        \li vector3d times(vector3d other)
        \li Returns the vector3d result of multiplying \c this vector3d with the \c other vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(4,5,6);
var c = a.times(b);
console.log(c.toString()); // QVector3D(4, 10, 18)
            \endcode

        \row
        \li vector3d times(real factor)
        \li Returns the vector3d result of multiplying \c this vector3d with the scalar \c factor
        \li \code
var a = Qt.vector3d(1,2,3);
var b = 4.48;
var c = a.times(b);
console.log(c.toString()); // QVector3D(4.48, 8.96, 13.44)
            \endcode

        \row
        \li vector3d plus(vector3d other)
        \li Returns the vector3d result of the addition of \c this vector3d with the \c other vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(4,5,6);
var c = a.plus(b);
console.log(c.toString()); // QVector3D(5, 7, 9)
            \endcode

        \row
        \li vector3d minus(vector3d other)
        \li Returns the vector3d result of the subtraction of \c other vector3d from \c this vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(4,5,6);
var c = a.minus(b);
console.log(c.toString()); // QVector3D(-3, -3, -3)
            \endcode

        \row
        \li vector3d normalized()
        \li Returns the normalized form of \c this vector
        \li \code
var a = Qt.vector3d(1,2,3);
var b = a.normalized();
console.log(b.toString()); // QVector3D(0.267261, 0.534522, 0.801784)
            \endcode

        \row
        \li real length()
        \li Returns the scalar real value of the length of \c this vector3d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = a.length();
console.log(b.toString()); // 3.7416573867739413
            \endcode

        \row
        \li vector2d toVector2d()
        \li Returns the vector2d result of converting \c this vector3d to a vector2d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = a.toVector2d();
console.log(b.toString()); // QVector2D(1, 2)
            \endcode

        \row
        \li vector4d toVector4d()
        \li Returns the vector4d result of converting \c this vector3d to a vector4d
        \li \code
var a = Qt.vector3d(1,2,3);
var b = a.toVector4d();
console.log(b.toString()); // QVector4D(1, 2, 3, 0)
            \endcode

        \row
        \li bool fuzzyEquals(vector3d other, real epsilon)
        \li Returns true if \c this vector3d is approximately equal to the \c other vector3d.
            The approximation will be true if each attribute of \c this is within \c epsilon
            of \c other.  Note that \c epsilon is an optional argument, the default \c epsilon
            is 0.00001.
        \li \code
var a = Qt.vector3d(1,2,3);
var b = Qt.vector3d(1.0001, 1.9998, 2.0001);
var c = a.fuzzyEquals(b);        // default epsilon
var d = a.fuzzyEquals(b, 0.005); // supplied epsilon
console.log(c + " " + d); // false true
            \endcode
\endtable

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype vector4d
    \ingroup qtquickbasictypes

    \brief A vector4d type has x, y, z and w attributes.

    A \c vector4d type has \c x, \c y, \c z and \c w attributes,
    otherwise it is similar to the \c vector3d type.  Please see the
    documentation about the \c vector3d type for more information.

    To create a \c vector4d value, specify it as a "x,y,z,w" string,
    or define the components individually, or compose it with
    the Qt.vector4d() function.

    The vector4d type has the following idempotent functions which can be
    invoked in QML:
    \table
        \header
        \li Function Signature
        \li Description
        \li Example

        \row
        \li real dotProduct(vector4d other)
        \li Returns the scalar real result of the dot product of \c this vector4d with the \c other vector4d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.vector4d(5,6,7,8);
var c = a.dotProduct(b);
console.log(c); // 70
            \endcode

        \row
        \li vector4d times(matrix4x4 matrix)
        \li Returns the vector4d result of transforming \c this vector4d with
            the 4x4 \c matrix with the matrix applied post-vector
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.matrix4x4(4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19);
var c = a.times(b);
console.log(c.toString()); // QVector4D(120, 130, 140, 150)
            \endcode

        \row
        \li vector4d times(vector4d other)
        \li Returns the vector4d result of multiplying \c this vector4d with the \c other vector4d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.vector4d(5,6,7,8);
var c = a.times(b);
console.log(c.toString()); // QVector4D(5, 12, 21, 32)
            \endcode

        \row
        \li vector4d times(real factor)
        \li Returns the vector4d result of multiplying \c this vector4d with the scalar \c factor
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = 4.48;
var c = a.times(b);
console.log(c.toString()); // QVector3D(4.48, 8.96, 13.44, 17.92)
            \endcode

        \row
        \li vector4d plus(vector4d other)
        \li Returns the vector4d result of the addition of \c this vector4d with the \c other vector4d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.vector4d(5,6,7,8);
var c = a.plus(b);
console.log(c.toString()); // QVector4D(6, 8, 10, 12)
            \endcode

        \row
        \li vector4d minus(vector4d other)
        \li Returns the vector4d result of the subtraction of \c other vector4d from \c this vector4d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.vector4d(5,6,7,8);
var c = a.minus(b);
console.log(c.toString()); // QVector4D(-4, -4, -4, -4)
            \endcode

        \row
        \li vector4d normalized()
        \li Returns the normalized form of \c this vector
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = a.normalized();
console.log(b.toString()); // QVector4D(0.182574, 0.365148, 0.547723, 0.730297)
            \endcode

        \row
        \li real length()
        \li Returns the scalar real value of the length of \c this vector3d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = a.length();
console.log(b.toString()); // 5.477225575051661
            \endcode

        \row
        \li vector2d toVector2d()
        \li Returns the vector2d result of converting \c this vector4d to a vector2d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = a.toVector2d();
console.log(b.toString()); // QVector2D(1, 2)
            \endcode

        \row
        \li vector3d toVector3d()
        \li Returns the vector3d result of converting \c this vector4d to a vector3d
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = a.toVector3d();
console.log(b.toString()); // QVector3D(1, 2, 3)
            \endcode

        \row
        \li bool fuzzyEquals(vector4d other, real epsilon)
        \li Returns true if \c this vector4d is approximately equal to the \c other vector4d.
            The approximation will be true if each attribute of \c this is within \c epsilon
            of \c other.  Note that \c epsilon is an optional argument, the default \c epsilon
            is 0.00001.
        \li \code
var a = Qt.vector4d(1,2,3,4);
var b = Qt.vector4d(1.0001, 1.9998, 2.0001, 3.9999);
var c = a.fuzzyEquals(b);        // default epsilon
var d = a.fuzzyEquals(b, 0.005); // supplied epsilon
console.log(c + " " + d); // false true
            \endcode
\endtable

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype quaternion
    \ingroup qtquickbasictypes

    \brief A quaternion type has scalar, x, y, and z attributes.

    A \c quaternion type has \c scalar, \c x, \c y and \c z attributes.

    To create a \c quaternion value, specify it as a "scalar,x,y,z" string,
    or define the components individually, or compose it with
    the Qt.quaternion() function.

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
    \qmlbasictype matrix4x4
    \ingroup qtquickbasictypes

    \brief A matrix4x4 type is a 4-row and 4-column matrix

    A \c matrix4x4 type has sixteen values, each accessible via the properties
    \c m11 through \c m44 in QML (in row/column order).  Values of this type
    can be composed with the Qt.matrix4x4() function.  Each attribute in a
    matrix4x4 is stored as a real (single-precision on ARM, double-precision
    on x86).

    The matrix4x4 type has the following idempotent functions which can be
    invoked in QML:
    \table
        \header
        \li Function Signature
        \li Description
        \li Example

        \row
        \li matrix4x4 times(matrix4x4 other)
        \li Returns the matrix4x4 result of multiplying \c this matrix4x4 with
            the \c other matrix4x4
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.matrix4x4(4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19);
var c = a.times(b);
console.log(c.toString()); // QMatrix4x4(120, 130, 140, 150, 280, 306, 332, 358, 440, 482, 524, 566, 600, 658, 716, 774)
            \endcode

        \row
        \li vector4d times(vector4d vector)
        \li Returns the vector4d result of transforming the \c vector
            according to \c this matrix4x4 with the matrix applied
            pre-vector
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.vector4d(5,6,7,8);
var c = a.times(b);
console.log(c.toString()); // QVector4D(70, 174, 278, 382)
            \endcode

        \row
        \li vector3d times(vector3d vector)
        \li Returns the vector3d result of transforming the \c vector
            according to \c this matrix4x4 with the matrix applied
            pre-vector
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.vector3d(5,6,7);
var c = a.times(b);
console.log(c.toString()); // QVector3D(0.155556, 0.437037, 0.718518)
            \endcode

        \row
        \li matrix4x4 times(real factor)
        \li Returns the matrix4x4 result of multiplying \c this matrix4x4 with the scalar \c factor
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = 4.48;
var c = a.times(b);
console.log(c.toString()); // QMatrix4x4(4.48, 8.96, 13.44, 17.92, 22.4, 26.88, 31.36, 35.84, 40.32, 44.8, 49.28, 53.76, 58.24, 62.72, 67.2, 71.68)
            \endcode

        \row
        \li matrix4x4 plus(matrix4x4 other)
        \li Returns the matrix4x4 result of the addition of \c this matrix4x4 with the \c other matrix4x4
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.matrix4x4(5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20);
var c = a.plus(b);
console.log(c.toString()); // QMatrix4x4(6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36)
            \endcode

        \row
        \li matrix4x4 minus(matrix4x4 other)
        \li Returns the matrix4x4 result of the subtraction of \c other matrix4x4 from \c this matrix4x4
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.matrix4x4(5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20);
var c = a.minus(b);
console.log(c.toString()); // QMatrix4x4(-4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4)
            \endcode

        \row
        \li vector4d row(int which)
        \li Returns the vector4d row of \c this specified by \c which.
            Note: the \c which is 0-based access into the matrix.
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.vector4d(a.m21, a.m22, a.m23, a.m24);
var c = a.row(2); // zero based access!  so not equal to b
console.log(b.toString() + " " + c.toString()); // QVector4D(5, 6, 7, 8) QVector4D(9, 10, 11, 12)
            \endcode

        \row
        \li vector4d column(int which)
        \li Returns the vector4d column of \c this specified by \c which.
            Note: the \c which is 0-based access into the matrix.
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.vector4d(a.m12, a.m22, a.m32, a.m42);
var c = a.column(2); // zero based access!  so not equal to b
console.log(b.toString() + " " + c.toString()); // QVector4D(2, 6, 10, 14) QVector4D(3, 7, 11, 15)
            \endcode

        \row
        \li real determinant()
        \li Returns the determinant of \c this matrix4x4
        \li \code
var a = Qt.matrix4x4(1,0,0,0,0,2,0,0,0,0,3,0,100,200,300,1);
var b = a.determinant();
console.log(b); // 6
            \endcode

        \row
        \li matrix4x4 inverted()
        \li Returns the inverse of \c this matrix4x4 if it exists, else the identity matrix.
        \li \code
var a = Qt.matrix4x4(1,0,0,0,0,2,0,0,0,0,3,0,100,200,300,1);
var b = a.inverted();
console.log(b.toString()); // QMatrix4x4(1, 0, 0, 0, 0, 0.5, 0, 0, 0, 0, 0.333333, 0, -100, -100, -100, 1)
            \endcode

        \row
        \li matrix4x4 transposed()
        \li Returns the transpose of \c this matrix4x4
        \li \code
var a = Qt.matrix4x4(1,0,0,0,0,2,0,0,0,0,3,0,100,200,300,1);
var b = a.transposed();
console.log(b.toString()); // QMatrix4x4(1, 0, 0, 100, 0, 2, 0, 200, 0, 0, 3, 300, 0, 0, 0, 1)
            \endcode

        \row
        \li bool fuzzyEquals(matrix4x4 other, real epsilon)
        \li Returns true if \c this matrix4x4 is approximately equal to the \c other matrix4x4.
            The approximation will be true if each attribute of \c this is within \c epsilon
            of the respective attribute of \c other.  Note that \c epsilon is an optional
            argument, the default \c epsilon is 0.00001.
        \li \code
var a = Qt.matrix4x4(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
var b = Qt.matrix4x4(1.0001,2.0001,3.0002,4.0003,5.0001,6.0002,7.0002,8.0004,9.0001,10.0003,11.0003,12.0004,13.0001,14.0002,15.0003,16.0004);
var c = a.fuzzyEquals(b);        // default epsilon
var d = a.fuzzyEquals(b, 0.005); // supplied epsilon
console.log(c + " " + d); // false true
            \endcode
\endtable

    This basic type is provided by the QtQuick import.

    \sa {QML Basic Types}
*/

/*!
\qmlmodule QtTest 1.0
\title Qt Quick Test
\brief This module provides QML types to unit test your QML application

You can import this module using the following statement:
\code
import QtTest 1.0
\endcode

For more information about how to use these types, see
\l{Qt Quick Test Reference Documentation}.
*/