layout method

@override PwBox layout(Context context, BoxConstraints constraints)

layout API.

Implementation

@override
PwBox layout(Context context, BoxConstraints constraints) {
  final double? width = widthFactor == null || !constraints.hasBoundedWidth
      ? null
      : constraints.maxWidth * widthFactor!;
  final double? height =
      heightFactor == null || !constraints.hasBoundedHeight
      ? null
      : constraints.maxHeight * heightFactor!;
  final PwBox box = child.layout(
    context,
    BoxConstraints(
      minWidth: width ?? 0,
      maxWidth: width ?? constraints.maxWidth,
      minHeight: height ?? 0,
      maxHeight: height ?? constraints.maxHeight,
    ),
  );
  final PwSize size = constraints.constrain(
    PwSize(width ?? box.size.width, height ?? box.size.height),
  );
  return ProxyBox(
    size,
    child: box,
    childOffset: alignment
        .resolve(context.textDirection)
        .alongOffset(size, box.size),
  );
}