Qt Quick QML 类型

The Qt Quick 模块提供图形图元类型。这些类型仅在 QML 文档中可用，若该文档导入 QtQuick 名称空间。

要使用模块，import QtQuick 模块采用以下语句：

import QtQuick

拜访 Qt Quick module documentation for more information about the concepts that are central to QtQuick .

子模块

Qt Quick includes several submodules that contain additional types:

本地存储 - 包含用于 SQLite 数据库的 JavaScript 接口的子模块
粒子 - 为 QML 应用程序提供粒子系统
Controls - 提供一组可重用 UI 组件
布局 - 包含用于在用户界面中排列项的类型
测试 - 用于测试 QML 应用程序的类型。
效果 - provides types for applying one or more simple graphical effects to Qt Quick items.

值类型

There are a number of value types that are supported by default in the QML language .

此外， QtQuick import provides the following value types:

color	ARGB color value
font	Font value with the properties of QFont. The font type refers to a font value with the properties of QFont
matrix4x4	A matrix4x4 type is a 4-row and 4-column matrix
quaternion	A quaternion type has scalar, x, y, and z attributes
vector2d	A vector2d type has x and y attributes
vector3d	Value with x, y, and z attributes
vector4d	A vector4d type has x, y, z and w attributes

对象类型

Most object types provided by the QtQuick import are based on the Item type, which itself derives from QtObject . QML 对象类型 provided by the Qt QML module (such as QtObject and 组件 ) are also available when you import QtQuick .

Accessible	启用 QML 项的可访问性
AnchorAnimation	Animates changes in anchor values
AnchorChanges	指定如何按状态改变项锚点
AnimatedImage	Plays animations stored as a series of images
AnimatedSprite	绘制子画面动画
动画	所有 QML 动画的基
AnimationController	启用动画的手动控制
Animator	Is the base of all QML animators
应用程序	Provides access to global application state properties shared by many QML components
行为	Defines a default animation for a property change
BorderImage	基于图像描绘边框
BorderImageMesh	Defines a mesh with vertices arranged like those of a BorderImage
Canvas	Provides a 2D canvas item enabling drawing via JavaScript
CanvasGradient	Provides an opaque CanvasGradient interface
CanvasImageData	Contains image pixel data in RGBA order
CanvasPixelArray	Provides ordered and indexed access to the components of each pixel in image data
CloseEvent	Notification that a Window is about to be closed
ColorAnimation	Animates changes in color values
ColorGroup	Set of colors by roles
Column	Positions its children in a column
Context2D	Provides 2D context for shapes on a Canvas item
DoubleValidator	Defines a validator for non-integer numbers
Drag	For specifying drag and drop events for moved Items
DragEvent	Provides information about a drag event
DragHandler	Handler for dragging
DropArea	For specifying drag and drop handling in an area
EnterKey	Provides a property to manipulate the appearance of Enter key on an on-screen keyboard
Flickable	提供可以 "轻弹" 的表面
可翻转	Provides a surface that can be flipped
Flow	Positions its children side by side, wrapping as necessary
FocusScope	Explicitly creates a focus scope
FontLoader	Allows fonts to be loaded by URL
FontMetrics	Provides metrics for a given font
FrameAnimation	Triggers a handler at every animation frame update
GestureEvent	Parameter given with the gestureStarted signal
Gradient	Defines a gradient fill
GradientStop	Defines the color at a position in a Gradient
GraphicsInfo	Provides information about the scenegraph backend and the graphics API used by Qt Quick
Grid	Positions its children in grid formation
GridMesh	Defines a mesh with vertices arranged in a grid
GridView	For specifying a grid view of items provided by a model
HoverHandler	Handler for mouse and tablet hover
图像	显示图像
InputMethod	Provides access to QInputMethod for QML applications
IntValidator	Defines a validator for integer values
Item	A basic visual QML type
ItemGrabResult	Contains the results from a call to Item::grabToImage()
KeyEvent	Provides information about a key event
KeyNavigation	Supports key navigation by arrow keys
键	Provides key handling to Items
LayoutMirroring	Property used to mirror layout behavior
ListView	Provides a list view of items provided by a model
Loader	Allows dynamic loading of a subtree from a URL or Component
Matrix4x4	Provides a way to apply a 4x4 tranformation matrix to an Item
MouseArea	Enables simple mouse handling
MouseEvent	Provides information about a mouse event
MultiPointHandler	Abstract handler for multi-point Pointer Events
MultiPointTouchArea	启用处理多触摸点
NumberAnimation	Animates changes in qreal-type values
OpacityAnimator	Type animates the opacity of an Item
Palette	Contains color groups for each QML item state
ParallelAnimation	Enables animations to be run in parallel
ParentAnimation	Animates changes in parent values
ParentChange	指定如何在状态改变时重设项父级
Path	Defines a path for use by PathView and Shape
PathAngleArc	Defines an arc with the given radii and center
PathAnimation	Animates an item along a path
PathArc	Defines an arc with the given radius
PathAttribute	Specifies how to set an attribute at a given position in a Path
PathCubic	Defines a cubic Bezier curve with two control points
PathCurve	Defines a point on a Catmull-Rom curve
PathElement	基路径类型
PathInterpolator	Specifies how to manually animate along a path
PathLine	Defines a straight line
PathMove	移动路径的位置
PathMultiline	Defines a set of polylines through a list of lists of coordinates
PathPercent	Manipulates the way a path is interpreted
PathPolyline	Defines a polyline through a list of coordinates
PathQuad	Defines a quadratic Bezier curve with a control point
PathSvg	Defines a path using an SVG path data string
PathText	Defines a string in a specified font
PathView	Lays out model-provided items on a path
PauseAnimation	Provides a pause for an animation
PinchArea	启用简单捏合手势处理
PinchEvent	For specifying information about a pinch event
PinchHandler	Handler for pinch gestures
PointHandler	Handler for reacting to a single touchpoint
PointerDevice	QML equivalent for QPointingDevice
PointerDeviceHandler	Abstract handler for pointer events with device-specific constraints
PointerEvent	QML equivalent for QPointerEvent
PointerHandler	Abstract handler for pointer events
Positioner	Provides attached properties that contain details on where an item exists in a positioner
PropertyAction	Specifies immediate property changes during animation
PropertyAnimation	Animates changes in property values
PropertyChanges	描述状态的新特性绑定或值
Rectangle	Paints a filled rectangle with an optional border
RegularExpressionValidator	Provides a string validator
Repeater	Instantiates a number of Item-based components using a provided model
Rotation	Provides a way to rotate an Item
RotationAnimation	Animates changes in rotation values
RotationAnimator	Type animates the rotation of an Item
Row	Positions its children in a row
Scale	Provides a way to scale an Item
ScaleAnimator	Type animates the scale factor of an Item
Screen	Attached object provides information about the Screen an Item or Window is displayed on
ScriptAction	Defines scripts to be run during an animation
SequentialAnimation	Allows animations to be run sequentially
ShaderEffect	Applies custom shaders to a rectangle
ShaderEffectSource	Renders a Qt Quick item into a texture and displays it
Shortcut	提供键盘快捷键
SinglePointHandler	Abstract handler for single-point Pointer Events
SmoothedAnimation	Allows a property to smoothly track a value
SpringAnimation	Allows a property to track a value in a spring-like motion
Sprite	Specifies sprite animations
SpriteSequence	绘制子画面动画
State	定义对象和特性的配置
StateChangeScript	指定如何按状态运行脚本
StateGroup	为非项类型提供内置状态支持
SystemPalette	Provides access to the Qt palettes
TableView	Provides a table view of items to display data from a model
TapHandler	Handler for taps and clicks
文本	Specifies how to add formatted text to a scene
TextEdit	Displays multiple lines of editable formatted text
TextInput	Displays an editable line of text
TextMetrics	Provides metrics for a given font and text
TouchPoint	Describes a touch point in a MultiPointTouchArea
Transform	For specifying advanced transformations on Items
Transition	Defines animated transitions that occur on state changes
Translate	Provides a way to move an Item without changing its x or y properties
TreeView	Provides a tree view to display data from a QAbstractItemModel
UniformAnimator	Type animates a uniform of a ShaderEffect
Vector3dAnimation	Animates changes in QVector3d values
ViewTransition	Specifies items under transition in a view
WheelEvent	Provides information about a mouse wheel event
WheelHandler	Handler for the mouse wheel
Window	Creates a new top-level window
XAnimator	Type animates the x position of an Item
YAnimator	Type animates the y position of an Item
eventPoint	Qml equivalent for QEventPoint
handlerPoint	An event point
pointingDeviceUniqueId	QML equivalent for QPointingDeviceUniqueId