PiliPlus/lib/common/widgets/extra_hittest_stack.dart

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart'
    show RenderStack, BoxHitTestResult, BoxHitTestEntry;

class ExtraHitTestStack extends Stack {
  const ExtraHitTestStack({
    super.key,
    super.alignment,
    super.textDirection,
    super.fit,
    super.clipBehavior,
    super.children,
  });

  @override
  RenderExtraHitTestStack createRenderObject(BuildContext context) {
    return RenderExtraHitTestStack(
      alignment: alignment,
      textDirection: textDirection ?? Directionality.maybeOf(context),
      fit: fit,
      clipBehavior: clipBehavior,
    );
  }

  @override
  void updateRenderObject(
    BuildContext context,
    RenderExtraHitTestStack renderObject,
  ) {
    renderObject
      ..alignment = alignment
      ..textDirection = textDirection ?? Directionality.maybeOf(context)
      ..fit = fit
      ..clipBehavior = clipBehavior;
  }
}

class RenderExtraHitTestStack extends RenderStack {
  RenderExtraHitTestStack({
    super.children,
    super.alignment,
    super.textDirection,
    super.fit,
    super.clipBehavior,
  });

  @override
  bool hitTest(BoxHitTestResult result, {required Offset position}) {
    assert(() {
      if (!hasSize) {
        if (debugNeedsLayout) {
          throw FlutterError.fromParts(<DiagnosticsNode>[
            ErrorSummary(
              'Cannot hit test a render box that has never been laid out.',
            ),
            describeForError(
              'The hitTest() method was called on this RenderBox',
            ),
            ErrorDescription(
              "Unfortunately, this object's geometry is not known at this time, "
              'probably because it has never been laid out. '
              'This means it cannot be accurately hit-tested.',
            ),
            ErrorHint(
              'If you are trying '
              'to perform a hit test during the layout phase itself, make sure '
              "you only hit test nodes that have completed layout (e.g. the node's "
              'children, after their layout() method has been called).',
            ),
          ]);
        }
        throw FlutterError.fromParts(<DiagnosticsNode>[
          ErrorSummary('Cannot hit test a render box with no size.'),
          describeForError('The hitTest() method was called on this RenderBox'),
          ErrorDescription(
            'Although this node is not marked as needing layout, '
            'its size is not set.',
          ),
          ErrorHint(
            'A RenderBox object must have an '
            'explicit size before it can be hit-tested. Make sure '
            'that the RenderBox in question sets its size during layout.',
          ),
        ]);
      }
      return true;
    }());
    if (hitTestChildren(result, position: position) || hitTestSelf(position)) {
      result.add(BoxHitTestEntry(this, position));
      return true;
    }
    return false;
  }
}