LayoutBuilder class
Builds a widget tree that can depend on the parent widget's size.
- Inheritance
-
- Object
- Widget
- StatelessWidget
- LayoutBuilder
Constructors
- LayoutBuilder({required LayoutWidgetBuilder builder})
- Creates a widget that defers its building until layout.
Properties
- box ↔ PdfRect?
-
The bounding box of this widget, calculated at layout time
getter/setter pairinherited
- builder → LayoutWidgetBuilder
-
Called at layout time to construct the widget tree.
final
- canSpan → bool
-
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasMoreWidgets → bool
-
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
Context context) → Widget -
override
-
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
override
-
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.offsetinherited -
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