layout method

  1. @override
void layout(
  1. LayoutRect parentOffset,
  2. LayoutOffset offset,
  3. LayoutSize size,
  4. OverflowBounds overflowBounds, {
  5. LayoutOffset? revealOffset,
})
override

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

This method calculates and sets the child's size and position based on the provided constraints and the child's layout data. After calling this, the child's size and offset properties will be valid.

Implementation

@override
void layout(
  LayoutRect parentOffset,
  LayoutOffset offset,
  LayoutSize size,
  OverflowBounds overflowBounds, {
  LayoutOffset? revealOffset,
}) {
  box.parentData.offset = offset;
  assert(size.width.isFinite && size.height.isFinite);
  if (box.size != size) {
    box.size = size;
  }
}