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lib/components/grid.dart

@@ -0,0 +1,36 @@
+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;
+  }
+}