Positioned class
A widget that controls where a child of a Stack is positioned.
- Inheritance
-
- Object
- Widget
- SingleChildWidget
- Positioned
- Implementers
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
getter/setter pairinherited
- canSpan → bool
-
no setterinherited
- child → Widget?
-
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasMoreWidgets → bool
-
no setterinherited
- height → double?
-
no setter
- left → double?
-
no setter
- right → double?
-
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- top → double?
-
final
- width → double?
-
no setter
Methods
-
applyContext(
covariant WidgetContext context) → void -
Called before relayout to restore the saved state and
restart the layout in the same conditions
inherited
-
cloneContext(
) → WidgetContext -
Called after layout to save the state
inherited
-
debugPaint(
Context context) → void -
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 nonexistent method or property is accessed.
inherited
-
paint(
Context context) → void -
Draw itself and its children, according to the calculated
box.offsetoverride -
paintChild(
Context context) → void -
inherited
-
restoreContext(
covariant WidgetContext context) → void -
Apply the context for next page layout.
Called before layout to prepare for next page
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