RectGetter class

需要实时获得某个Widget的Rect信息时使用该控件 可选传GlobalKey和无参两种构造方式，之后利用对象本身或者构造传入的key以获取信息 Use this widget to get a widget`s rectangle information in real-time . It has 2 constructors , pass a globalkey or use default key , and then you can use the key or object itself to get info .

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• RectGetter

Constructors

RectGetter({required GlobalKey<_RectGetterState> key, required Widget child})

传GlobalKey构造，之后可以RectGetter.getRectFromKey(key)的方式获得Rect constructor with key passed , and then you can get child`s rect by using RectGetter.getRectFromKey(key)

RectGetter.defaultKey({required Widget child})

生成默认GlobalKey的命名无参构造，调用对象的getRect方法获得Rect Use defaultKey to build RectGetter , and then use object itselfs getRect() method to get childs rect

factory

Properties

child → Widget

final

hashCode → int

The hash code for this object.

no setter, inherited

key → GlobalKey<_RectGetterState>

Controls how one widget replaces another widget in the tree.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clone() → RectGetter

克隆出新对象实例，避免同一GlobalKey在组件树上重复出现导致的问题 make a clone with different GlobalKey

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → _RectGetterState

Creates the mutable state for this widget at a given location in the tree.

override

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

getRect() → Rect?

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

createGlobalKey() → GlobalKey<_RectGetterState>

create a custom globalkey , use this way to avoid type exception in dart2 .

getRectFromKey(GlobalKey<_RectGetterState> globalKey) → Rect?

持有某RectGetter对象的key时利用该方法获得其child的rect Use this static method to get child`s rectangle information when had a custom globalkey