PathView 提供一个内容沿着路径来显示的模型
Path 定义一个PathView使用的轨迹
PathLine 定义一个线性的轨迹
PathQuad 定义一个二次贝塞尔曲线的轨迹
PathCubic 定义一个三次贝塞尔曲线的轨迹
PathAttribute 允许绑定一个属性上，具体看例子
PathPercent 修改item分配的轨迹 不是很明了其中的意思
WebView 允许添加网页内容到一个canvas上
定位器
Column 整理它的子列(纵)
Row 整理它的子行(横)
Grid 设置它的子到一个网格上
Flow 目的是不让他的子项重叠在一起
实用
Connections 明确连接信号和信号句柄
Component 封装QML items 想一个组件一样
Timer 提供时间触发器
QtObject 基本的元素只包含objectName属性
Qt qml全局Qt object提供使用的枚举和函数
WorkerScript 允许在QML使用线程
Loader 控制载入item或组件
Repeater 使用一个模型创建多个组件
SystemPalette 为Qt palettes提供一个通道
FontLoader 载入字体根据名字或URL
LayoutItem 允许声明UI元素插入到qtGraphicsView 布局中
变换
Scale 分派item 缩放行为
Rotation 分派item 旋转行为
Translate 分派item 移动行为
4.基本元素的使用例子
1. Item位置是0,0 宽高分别是200
Item {
x: 0; y: 0;
width: 200; height: 200;
}
2. Rectangle位置是：0,0宽高分别是200， 颜色是红色
Rectangle {
x: 0; y: 0;
width: 200; height: 200;
color: "red"
}
3. Gradient GradientStop 分别在总高度的0 颜色红色 总高度的1/3 黄色 总高度的1是绿色
Rectangle {
width: 100; height: 100
gradient: Gradient {
GradientStop { position: 0.0; color: "red" }
GradientStop { position: 0.33; color: "yellow" }
GradientStop { position: 1.0; color: "green" }
}
}
4. Image 设置一张图片
Image {
source: "../Images/button1.png"
}
5. BorderImage 他将一张图片分成9部分
当图片进行缩放的时候
A．1 3 7 9 位置的都不会进行缩放
B. 2 8将根据属性horzontalTileMode 进行缩放
C．4 6 将根据属性verticalTileMode 进行缩放
D．5 将根据属性horzontalTileMode 和 verticalTileMode 进行缩放
BorderImage {
width: 180; height: 180
// 分割1~9块的4个点是根据border设置的坐标来实现的
// 本别是距离坐标 上边 右边 下边的距离
border { left: 30; top: 30; right: 30; bottom: 30 }
horizontalTileMode: BorderImage.Stretch
verticalTileMode: BorderImage.Stretch
source: "../Images/button1.png"
}
6. AnimatedImage 主要用于播放gif图片
Rectangle {
width: animation.width; height: animation.height + 8
AnimatedImage { id: animation; source: "animation.gif" }
Rectangle {
property int frames: animation.frameCount
width: 4; height: 8
x: (animation.width - width) * animation.currentFrame / frames
y: animation.height
color: "red"
}
}
7. Text 显示文本(具体的其他设置请看文档)
Text {
text: "text"
}
8. TextInput 下面是设置一个输入文本框，框中的字符串是Text, 并设置鼠标可以选择文本
TextInput{
text: "Text"
selectByMouse: true; // 鼠标可以选择
}
9．IntValidator int 型验证器，和输入框结合后就是只能输入整型数据
TextInput{
// 最高可以输入100， 最低输入10
IntValidator{id: intval; bottom: 10; top: 100;}
width: 100; height: 20;
text: "";
// 使用校验器
validator: intval;
}
10. DoubleValidator 只能输入浮点数
TextInput{
// 最高可以输入100， 最低输入10 decimals最多有多少位小数
// notation 表示是使用科学计数法还是(默认),还是直接的小数 当获取里面的数据
DoubleValidator{id: intval; decimals: 4; bottom: 10; top: 100; notation:DoubleValidator.StandardNotation}
width: 100; height: 20;
text: "";
// 使用校验器
validator: intval;
}
11. RegExpValidator 使用正则表达式
TextInput{
// 使用一个正则表达式来控制输入的字符串
// /^[a-zA-Z]{1}[0-1]{0,2}[a-z]{1,3}$/ 表示 开始位置必须是一个大写或小写字母
// 接下来是0~2个的数字而且是0或1，在接下来是1~3个的小写字母
RegExpValidator{id: intval; regExp:/^[a-zA-Z]{1}[0-1]{0,2}[a-z]{1,3}$/;}
width: 100; height: 20;
text: "";
// 使用校验器
validator: intval;
}
12. TextEdit
显示一段hello world的html文本和TextInput相同
TextEdit {
width: 240
text: "<b>Hello</b> <i>World!</i>"
font.family: "Helvetica"
font.pointSize: 20
color: "blue"
focus: true
}
13. MouseArea
主要是用来判断鼠标事件的区域
Rectangle{
x: 0; y: 0;
width: 100; height:100;
Rectangle{
id: mousrect
x: 20; y: 20;
width: 20; height: 20;
color: "blue"
MouseArea{
// 使用父的区域作为鼠标判断的区域及 x: 20; y: 20; width: 20; height: 20;
anchors.fill: parent;
// 但鼠标按下后 mousrect变成红色，当鼠标松开后变成蓝色
onPressed: { mousrect.color = "red";}
onReleased: { mousrect.color = "blue";}
}
}
}
14. FocusScope
不是很清楚说的什么，好像是说同一个时刻只有一个item有焦点
15. Flickable
显示一个200x200的框，框中显示图片上200x200的部分
Flickable {
width: 200; height: 200
// 设置使用图片的宽 高，而现实的是 200x200的现实框
contentWidth: image.width; contentHeight: image.height
Image { id: image; source: "../Images/need.png" }
}
16. Flipable
包含两个面，一个前面，一个后面，实现一个控件前后的翻转效果，并且在后面可以添加一些控制
Flipable {
id: flipable
width: 240
height: 240
property int angle: 0
property bool flipped: false
front: Image { source: "front.png" } // 前面
back: Image { source: "back.png" } // 后面
// 旋转动画 前后面交换
transform: Rotation {
origin.x: flipable.width/2; origin.y: flipable.height/2
axis.x: 0; axis.y: 1; axis.z: 0 // rotate around y-axis
angle: flipable.angle
}
states: State {
name: "back"
PropertyChanges { target: flipable; angle: 180 }
when: flipable.flipped
}
transitions: Transition {
NumberAnimation { properties: "angle"; duration: 1000 }
}
MouseArea {
anchors.fill: parent
onClicked: flipable.flipped = !flipable.flipped
}
}
17. State
// 当鼠标按下后改变 myRect 的颜色
Rectangle {
id: myRect
width: 100; height: 100
color: "black"
MouseArea {
id: mouseArea
anchors.fill: parent
onClicked: myRect.state == 'clicked' ? myRect.state = "" : myRect.state = 'clicked';
}
// 设置状态
states: [
State {
name: "clicked"
PropertyChanges { target: myRect; color: "red" }
}
]
}
18. PropertyChanges
// 当鼠标按下后改变状态
// 状态里面的属性改变包含了文本和颜色的改变
Text {
id: myText
width: 100; height: 100
text: "Hello"
color: "blue"
states: State {
name: "myState"
// 当这个状态被设置的时候，将改变myText的文本和颜色
PropertyChanges {
target: myText
text: "Goodbye"
color: "red"
}
}
MouseArea { anchors.fill: parent; onClicked: myText.state = 'myState' }
}
19. StateGroup
一个状态组中可以包含很多的状态和变化，而状态也可以和变换绑定.
20. StateChangeScript
在状态中可以对脚本中的函数进行调用
// Sc.js
function changeColor() // 返回蓝色
{
return "blue";
}
// test.qml
import "Sc.js" as Code
Rectangle{
id: rect
width: 50; height: 50
color: "red"
MouseArea {
anchors.fill: parent
onClicked: rect.state = "first" // 鼠标按下改变状态
}
states: State {name: "first";
StateChangeScript{
name: "myScript";
script: rect.color = Code.changeColor();
}
}
}
21. ParentChang
把指定的item换一个item父节点
Item {
width: 200; height: 100
Rectangle {
id: redRect
width: 100; height: 100
color: "red"
}
// 本来blueRect的父节点是Item 当鼠标按下后他被设置到 redRect上
Rectangle {
id: blueRect
x: redRect.width
width: 50; height: 50
color: "blue"
states: State {
name: "reparented"
// 改变父节点
ParentChange { target: blueRect; parent: redRect; x: 10; y: 10 }
}
MouseArea { anchors.fill: parent; onClicked: blueRect.state = "reparented" }
}
}
22. AnchorChanges
Rectangle {
id: window
width: 120; height: 120
color: "black"
Rectangle { id: myRect; width: 50; height: 50; color: "red" }
states: State {
name: "reanchored"
AnchorChanges { // 改变 myRect 的anchors属性
target: myRect
anchors.top: window.top
anchors.bottom: window.bottom
}
PropertyChanges {
target: myRect
anchors.topMargin: 10
anchors.bottomMargin: 10
}
}
// 鼠标事件
MouseArea { anchors.fill: parent; onClicked: window.state = "reanchored" }
}
23. Behavior
Rectangle {
id: rect
width: 100; height: 100
color: "red"
// 针对宽度的动画
Behavior on width {
NumberAnimation { duration: 1000 }
}
MouseArea {
anchors.fill: parent
onClicked: rect.width = 50
}
}
24. SequentialAnimation
串行播放多个动画
Rectangle {
id: rect1
width: 500; height: 500
Rectangle{
id: rect;
color: "red"
width: 100; height: 100
// 串行播放多个动画，先横向移动，在纵向移动
SequentialAnimation{
running: true;
NumberAnimation {target:rect; properties:"x"; to: 50; duration: 1000 }
NumberAnimation {target:rect; properties:"y"; to: 50; duration: 1000 }
}
}
}
25. ParallelAnimation
Rectangle {
id: rect1
width: 500; height: 500
Rectangle{
id: rect;
color: "red"
width: 100; height: 100
// 并行播放动画，同时横向和纵向移动
ParallelAnimation{
running: true;
NumberAnimation {target:rect; properties:"x"; to: 50; duration: 1000 }
NumberAnimation {target:rect; properties:"y"; to: 50; duration: 1000 }
}
}
}
26. PropertyAnimation
Rectangle {
id: rect
width: 100; height: 100
color: "red"
states: State {
name: "moved"
PropertyChanges { target: rect; x: 50 }
}
transitions: Transition {
// 属性动画 这里是当属性 x或y发生变化的时候，就播放这样一个动画
PropertyAnimation { properties: "x,y"; easing.type: Easing.InOutQuad }
}
MouseArea{
anchors.fill: parent;
onClicked: rect.state = "moved";
}
}
27. NumberAnimation
Rectangle {
width: 100; height: 100
color: "red"
// 对当前item的x进行移动，目标移动到x = 50
NumberAnimation on x { to: 50; duration: 1000 }
}
28. Vector3dAnimation
29. ColorAnimation
颜色的过度
Rectangle {
width: 100; height: 100
color: "red"
ColorAnimation on color { to: "yellow"; duration: 1000 }
}
30. RotationAnimation
默认是绕z轴进行的旋转
Item {
width: 300; height: 300
Rectangle {
id: rect
width: 150; height: 100; anchors.centerIn: parent
color: "red"
smooth: true
states: State {
name: "rotated"; PropertyChanges { target: rect; rotation: 180 }
}
transitions: Transition {
RotationAnimation { duration: 1000; direction: RotationAnimation.Counterclockwise }
}
}
MouseArea { anchors.fill: parent; onClicked: rect.state = "rotated" }
}
31. ParentAnimation
一个切换父节点的动画,平滑的过度
Item {
width: 200; height: 100
Rectangle {
id: redRect
width: 100; height: 100
color: "red"
}
Rectangle {
id: blueRect
x: redRect.width
width: 50; height: 50
color: "blue"
states: State {
name: "reparented"
ParentChange { target: blueRect; parent: redRect; x: 10; y: 10 }
}
transitions: Transition {
ParentAnimation {
NumberAnimation { properties: "x,y"; duration: 1000 }
}
}
MouseArea { anchors.fill: parent; onClicked: blueRect.state = "reparented" }
}
}
32. AnchorAnimation
Item {
id: container
width: 200; height: 200
Rectangle {
id: myRect
width: 100; height: 100
color: "red"
}
states: State {
name: "reanchored"
AnchorChanges { target: myRect; anchors.right: container.right }
}
transitions: Transition {
// smoothly reanchor myRect and move into new position
AnchorAnimation { duration: 1000 }
}
// 当控件加载完成后
Component.onCompleted: container.state = "reanchored"
}
33. PauseAnimation
延迟效果
Item {
id: container
width: 200; height: 200
Rectangle {
id: myRect
width: 100; height: 100
color: "red"
SequentialAnimation {
running: true;
NumberAnimation {target: myRect;to: 50; duration: 1000; properties: "x"; }
PauseAnimation { duration: 5000 } // 延迟100毫秒
NumberAnimation {target: myRect; to: 50; duration: 1000; properties: "y"; }
}
}
}
34. SmoothedAnimation
平滑过度
Rectangle {
width: 800; height: 600
color: "blue"
Rectangle {
width: 60; height: 60
x: rect1.x - 5; y: rect1.y - 5
color: "green"
Behavior on x { SmoothedAnimation { velocity: 200 } }
Behavior on y { SmoothedAnimation { velocity: 200 } }
}
Rectangle {
id: rect1
width: 50; height: 50
color: "red"
}
focus: true
Keys.onRightPressed: rect1.x = rect1.x + 100
Keys.onLeftPressed: rect1.x = rect1.x - 100
Keys.onUpPressed: rect1.y = rect1.y - 100
Keys.onDownPressed: rect1.y = rect1.y + 100
}
35. SpringAnimation
平滑的过度过程，在动画结束的时候有种弹性的效果
Item {
width: 300; height: 300
Rectangle {
id: rect
width: 50; height: 50
color: "red"
Behavior on x { SpringAnimation { spring: 2; damping: 0.2 } }
Behavior on y { SpringAnimation { spring: 2; damping: 0.2 } }
}
MouseArea {
anchors.fill: parent
onClicked: {
rect.x = mouse.x - rect.width/2
rect.y = mouse.y - rect.height/2
}
}
}
36. PropertyAction
主要是在动画过程中直接的改变一个属性
transitions: Transition {
...
PropertyAction { target: theImage; property: "smooth"; value: true }
...
}
38. ScriptAction
在动画过程中嵌入脚本的调用
SequentialAnimation {
NumberAnimation { ... }
ScriptAction { script: doSomething(); }
NumberAnimation { ... }
}
39. Transition
Rectangle {
id: rect
width: 100; height: 100
color: "red"
MouseArea {
id: mouseArea
anchors.fill: parent
}
states: State {
name: "moved"; when: mouseArea.pressed
PropertyChanges { target: rect; x: 50; y: 50 }
}
transitions: Transition {
NumberAnimation { properties: "x,y"; easing.type: Easing.InOutQuad }
}
}
40. Binding
Item {
width: 300; height: 300
Text {id: app; text: "xxxfa"}
TextEdit { id: myTextField; text: "Please type here..." }
// 把myTextField和app的enteredText属性进行绑定
Binding { target: app; property: "enteredText"; value: myTextField.text }
}
41. ListModel
直接看效果
Rectangle {
width: 200; height: 200
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
Component {
id: fruitDelegate
Row {
spacing: 10
Text { text: name }
Text { text: '$' + cost }
}
}
ListView {
anchors.fill: parent
model: fruitModel
delegate: fruitDelegate
}
}
42. ListElement
请参照ListModel
43. VisualItemModel
把可视化图元添加到链表试图
Rectangle {
width: 100; height: 100;
VisualItemModel {
id: itemModel
Rectangle { height: 30; width: 80; color: "red" }
Rectangle { height: 30; width: 80; color: "green" }
Rectangle { height: 30; width: 80; color: "blue" }
}
ListView {
anchors.fill: parent
model: itemModel
}
}
44. VisualDataModel
看下面效果
Rectangle {
width: 200; height: 100
VisualDataModel {
id: visualModel
model: ListModel {
ListElement { name: "Apple" }
ListElement { name: "Orange" }
}
delegate: Rectangle {
height: 25
width: 100
Text { text: "Name: " + name}
}
}
ListView {
anchors.fill: parent
model: visualModel
}
}
45. Package
具体请参考
declarative/modelviews/package
46. XmlListModel XmlRole
从网络获取xml，暂时没有测试成功
47. ListView
参考 ListModel VisualDataModel
48. GridView
看效果
Rectangle {
width: 200; height: 400;
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
GridView {
anchors.fill: parent
model: fruitModel
delegate: Column{
Text {text:"name" + name}
Text {text:"cost"+ cost}
}
}
}
49．PathView Path
看例子
Rectangle {
width: 200; height: 400;
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
PathView {
anchors.fill: parent
model: fruitModel
delegate: Column{
Text {text:"name" + name}
Text {text:"cost"+ cost}
}
path:Path{
startX: 120; startY: 100
PathQuad { x: 120; y: 25; controlX: 260; controlY: 75 }
PathQuad { x: 120; y: 100; controlX: -20; controlY: 75 }
}
}
}
50．PathLine
具体的看运行的例子
Rectangle {
width: 200; height: 400;
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
PathView {
anchors.fill: parent
model: fruitModel
delegate: Column{
Text {text:"name" + name}
Text {text:"cost"+ cost}
}
path:Path{
startX: 150; startY: 120
PathLine { x: 200; y: 80; }
PathLine { x: 100; y: 80; }
PathLine { x: 150; y: 120; }
}
}
}
51．PathQuad
参考 PathView Path
52．PathCubic
还要看
53．PathAttribute
可以直接针对一些属性进行改变
Rectangle {
width: 200; height: 400;
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
PathView {
anchors.fill: parent
model: fruitModel
delegate:
Item {
id: delitem;
width: 80; height: 80;
Column{
// 这里使用图片试试
Rectangle {
width: 40; height: 40;
scale: delitem.scale;
color: "red"
}
Text {text:"name" + name}
Text {text:"cost"+ cost}
}
}
//
path: Path {
startX: 120; startY: 100
PathAttribute { name: "Scale"; value: 1.0 }
PathQuad { x: 120; y: 25; controlX: 260; controlY: 75 }
PathAttribute { name: "Scale"; value: 0.3 }
PathQuad { x: 120; y: 100; controlX: -20; controlY: 75 }
}
}
}
54．PathPercent
具体请看QML文档
55．WebView
import QtWebKit 1.0
WebView {
url: "http://www.nokia.com"
preferredWidth: 490
preferredHeight: 400
scale: 0.5
smooth: false
}
56 Column
横向排列
Rectangle{
width: 100; height: 100;
// 纵向排列
Column {
spacing: 2
Rectangle { color: "red"; width: 50; height: 50 }
Rectangle { color: "green"; width: 20; height: 50 }
Rectangle { color: "blue"; width: 50; height: 20 }
}
}
57 Row
Rectangle{
width: 100; height: 100;
// 横向排列
Row {
spacing: 2
Rectangle { color: "red"; width: 50; height: 50 }
Rectangle { color: "green"; width: 20; height: 50 }
Rectangle { color: "blue"; width: 50; height: 20 }
}
}
58 Grid
Rectangle{
width: 100; height: 100;
// 网格排列
Grid {
columns: 3
spacing: 2
Rectangle { color: "red"; width: 50; height: 50 }
Rectangle { color: "green"; width: 20; height: 50 }
Rectangle { color: "blue"; width: 50; height: 20 }
Rectangle { color: "cyan"; width: 50; height: 50 }
Rectangle { color: "magenta"; width: 10; height: 10 }
}
}
59 Flow
Rectangle{
width: 100; height: 100;
// 网格排列
Flow {
spacing: 2
width: 100; height: 100;
Rectangle { color: "red"; width: 50; height: 50 }
Rectangle { color: "green"; width: 20; height: 50 }
Rectangle { color: "blue"; width: 50; height: 20 }
Rectangle { color: "cyan"; width: 50; height: 50 }
Rectangle { color: "magenta"; width: 10; height: 10 }
}
}
60 Connections
下面是3中情况下会使用的，具体的不好翻译
Multiple connections to the same signal are required
有多个连接要连接到相同的信号时
Creating connections outside the scope of the signal sender
创建的连接在范围之外
Connecting to targets not defined in QML
创建的连接没有在QML中定义的
Rectangle{
width: 100; height: 100;
MouseArea {
id: area
anchors.fill: parent;
}
Connections {
target: area
onClicked: { console.log(" ok");}
}
}
61 Component
组件是可以重用的QML元素，具体还是看QML的文档翻译不是很好
Item {
width: 100; height: 100
// 定义一个组件他包含一个10x10的红色矩形
Component {
id: redSquare
Rectangle {
color: "red"
width: 10
height: 10
}
}
// 动态的载入一个组件
Loader { sourceComponent: redSquare }
Loader { sourceComponent: redSquare; x: 20 }
}
62 Timer
Item {
width: 200; height: 40;
// 和QTimer 差不多
Timer {
interval: 500; running: true; repeat: true
onTriggered: time.text = Date().toString() // 使用javascript获取系统时间
}
Text { id: time }
}
63 QtObject
他是不可见的只有objectName一个属性
通过这个属性我们可以在c++中找到我们想要的对象
// MyRect.qml
import Qt 4.7
Item {
width: 200; height: 200
Rectangle {
anchors.fill: parent
color: "red"
objectName: "myRect"
}
}
// main.cpp
QDeclarativeView view;
view.setSource(QUrl::fromLocalFile("MyRect.qml"));
view.show();
QDeclarativeItem *item = view.rootObject()->findChild<QDeclarativeItem*>("myRect");
if (item)
item->setProperty("color", QColor(Qt::yellow));
64 Qt
提供全局有用的函数和枚举，具体的看QML文档
65. WorkerScript
使用它可以把操作放到一个新的线程中，使得它在后台运行而不影响主GUI
具体可以看QML中它的文档
66. Loader
可以参考Component
还有QML中的文档
67 Repeater
他可以创建很多相似的组件，QML中还有几个例子
Row {
Repeater {
model: 3
Rectangle {
width: 100; height: 40
border.width: 1
color: "yellow"
}
}
}
68 SystemPalette
具体看效果和文档
Rectangle {
SystemPalette { id: myPalette; colorGroup: SystemPalette.Active }
width: 640; height: 480
color: myPalette.window
Text {
anchors.fill: parent
text: "Hello!"; color: myPalette.windowText
}
}
69. FontLoader
载入一种字体，可以是网络上的，也可以是本地的
Column {
FontLoader { id: fixedFont; name: "Courier" }
FontLoader { id: webFont; source: "http://www.mysite.com/myfont.ttf" }
Text { text: "Fixed-size font"; font.family: fixedFont.name }
Text { text: "Fancy font"; font.family: webFont.name }
}
70 LayoutItem
不清楚
71 Scale
对缩放的控制
Rectangle {
width: 100; height: 100
color: "blue"
Rectangle{
x: 50; y: 50;
width: 20; height: 20;
color: "red"
// 这里是在当前矩形的中间位置沿x轴进行3倍缩放
transform: Scale { origin.x: 10; origin.y: 10; xScale: 3}
}
}
72 Rotation
Rectangle {
width: 100; height: 100
color: "blue"
// 绕位置25,25 旋转45度
transform: Rotation { origin.x: 25; origin.y: 25; angle: 45}
}
73 Translate
Row {
Rectangle {
width: 100; height: 100
color: "blue"
// 沿y轴正方向移动20个像素
transform: Translate { y: 20 }
}
Rectangle {
width: 100; height: 100
color: "red"
// 沿y轴负方向移动20个像素
transform: Translate { y: -20 }
}
}
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有一部分是还没有完成的东西，因此官方还没有提供文档