ChildLayout mixin

Interface for child elements that participate in layout.

ChildLayout defines the contract that all layout participants must implement. It provides methods for layout calculation, sizing, positioning, and cache management. Layout algorithms use this interface to interact with children uniformly.

Mixin applications

• BoxChildLayout
• ChildLayoutDryDelegate
• RenderBoxChildLayout

Properties

debugKey → Object?

Debug key for identifying this child in debug output.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

layoutCache → ChildLayoutCache

The cache for storing computed layout results.

no setter

layoutData → LayoutData

The layout data containing this child's layout properties.

no setter

nextSibling → ChildLayout?

The next sibling in the layout tree.

no setter

offset → LayoutOffset

The current offset (position) of this child after layout.

no setter

previousSibling → ChildLayout?

The previous sibling in the layout tree.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

size → LayoutSize

The current size of this child after layout.

no setter

Methods

clearCache() → void

Clears all cached layout calculations.

dryLayout(LayoutConstraints constraints) → LayoutSize

Performs a dry layout without modifying the child's state.

getDistanceToBaseline(LayoutTextBaseline baseline) → double

Returns the distance from the top of this child to the specified baseline.

getMaxIntrinsicHeight(double width) → double

Returns the maximum intrinsic height of this child at the given width.

getMaxIntrinsicWidth(double height) → double

Returns the maximum intrinsic width of this child at the given height.

getMinIntrinsicHeight(double width) → double

Returns the minimum intrinsic height of this child at the given width.

getMinIntrinsicWidth(double height) → double

Returns the minimum intrinsic width of this child at the given height.

layout(LayoutOffset offset, LayoutSize size, OverflowBounds overflowBounds) → void

Performs the actual layout of this child within the given constraints.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited