Positioned class Null safety

A widget that controls where a child of a Stack is positioned.

Inheritance

Constructors

Positioned({double? left, double? top, double? right, double? bottom, required Widget child})
Positioned.directional({required TextDirection textDirection, double? start, double? top, double? end, double? bottom, required Widget child})
Creates a widget that controls where a child of a Stack is positioned.
factory
Positioned.fill({double? left = 0.0, double? top = 0.0, double? right = 0.0, double? bottom = 0.0, required Widget child})
Creates a Positioned object with left, top, right, and bottom set to 0.0 unless a value for them is passed.

Properties

bottom double?
final
box PdfRect?
The bounding box of this widget, calculated at layout time
read / write, inherited
canSpan bool
read-only, inherited
child Widget?
final, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
hasMoreWidgets bool
read-only, inherited
height double?
read-only
left double?
final
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
top double?
final
width double?
read-only

Methods

debugPaint(Context context) → void
@protected, inherited
layout(Context context, BoxConstraints constraints, {bool parentUsesSize = false}) → void
First widget pass to calculate the children layout and bounding box
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
paint(Context context) → void
Draw itself and its children, according to the calculated box.offset
override
paintChild(Context context) → void
@protected, inherited
restoreContext(covariant WidgetContext context) → void
Apply the context for next layout
inherited
saveContext() WidgetContext
Get unmodified mutable context object
inherited
toString() String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited