pixes/lib/components/grid.dart

import 'package:flutter/widgets.dart';

class SliverGridViewWithFixedItemHeight extends StatelessWidget {
  const SliverGridViewWithFixedItemHeight(
      {required this.delegate,
        required this.maxCrossAxisExtent,
        required this.itemHeight,
        super.key});

  final SliverChildDelegate delegate;

  final double maxCrossAxisExtent;

  final double itemHeight;

  @override
  Widget build(BuildContext context) {
    return SliverLayoutBuilder(
        builder: ((context, constraints) => SliverGrid(
          delegate: delegate,
          gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
              maxCrossAxisExtent: maxCrossAxisExtent,
              childAspectRatio:
              calcChildAspectRatio(constraints.crossAxisExtent)),
        )));
  }

  double calcChildAspectRatio(double width) {
    var crossItems = width ~/ maxCrossAxisExtent;
    if (width % maxCrossAxisExtent != 0) {
      crossItems += 1;
    }
    final itemWidth = width / crossItems;
    return itemWidth / itemHeight;
  }
}