ElPositioned class - widgets library

Constructors

ElPositioned({Key? key, required Object id, int index = 0, double? left, double? top, double? right, double? bottom, double? width, double? height, required Widget child}): const
ElPositioned.directional({Key? key, required TextDirection textDirection, required Object id, int index = 0, double? start, double? top, double? end, double? bottom, double? width, double? height, required Widget child}): factory
ElPositioned.fill({Key? key, required Object id, int index = 0, double? left = 0.0, double? top = 0.0, double? right = 0.0, double? bottom = 0.0, required Widget child}): const
ElPositioned.fromRect({Key? key, required Object id, int index = 0, required Rect rect, required Widget child})
ElPositioned.fromRelativeRect({Key? key, required Object id, int index = 0, required RelativeRect rect, required Widget child})

Properties

bottom → double?: The distance that the child's bottom edge is inset from the bottom of the stack.
finalinherited
child → Widget: The widget below this widget in the tree.
finalinherited
debugTypicalAncestorWidgetClass → Type: Describes the RenderObjectWidget that is typically used to set up the ParentData that applyParentData will write to.
no setteroverride
debugTypicalAncestorWidgetDescription → String: Describes the RenderObjectWidget that is typically used to set up the ParentData that applyParentData will write to.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
height → double?: The child's height.
finalinherited
id → Object: 指定唯一标识符，修改标识符会导致 Element 实例销毁、重建，如果出现相同的标识符，那么会覆盖上一个 Widget 实例
final
index → int: 显示权重，如果 index < 0，将不会进行绘制。
final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
left → double?: The distance that the child's left edge is inset from the left of the stack.
finalinherited
right → double?: The distance that the child's right edge is inset from the right of the stack.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
top → double?: The distance that the child's top edge is inset from the top of the stack.
finalinherited
width → double?: The child's width.
finalinherited

Methods

applyParentData(RenderObject renderObject) → void: Write the data from this widget into the given render object's parent data.
override
createElement() → ParentDataElement<StackParentData>: Inflates this configuration to a concrete instance.
override
debugCanApplyOutOfTurn() → bool: Whether the ParentDataElement.applyWidgetOutOfTurn method is allowed with this widget.
inherited
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.
override
debugIsValidRenderObject(RenderObject renderObject) → bool: Checks if this widget can apply its parent data to the provided renderObject.
inherited
noScrollbarBehavior(BuildContext context, {Key? key, bool? overscroll, bool enabled = true}) → Widget: Available on Widget, provided by the FlutterWidgetExt extension
不使用祖先提供的默认滚动条，当使用自定义滚动条时请添加此扩展方法，防止与祖先提供的默认滚动条重叠
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, int wrapWidth = 65}) → 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