melo-app/lib/widgets/press_scale.dart

import 'package:flutter/material.dart';

/// Press-Scale Mikro-Interaktion: Button skaliert beim Drücken auf 0.97.
/// Verwendet AnimatedScale mit 120ms Curves.easeOut.
class PressScale extends StatefulWidget {
  final Widget child;
  final VoidCallback? onTap;

  const PressScale({super.key, required this.child, this.onTap});

  @override
  State<PressScale> createState() => _PressScaleState();
}

class _PressScaleState extends State<PressScale> {
  double _scale = 1.0;

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTapDown: (_) => setState(() => _scale = 0.97),
      onTapUp: (_) {
        setState(() => _scale = 1.0);
        widget.onTap?.call();
      },
      onTapCancel: () => setState(() => _scale = 1.0),
      child: AnimatedScale(
        scale: _scale,
        duration: const Duration(milliseconds: 120),
        curve: Curves.easeOut,
        child: widget.child,
      ),
    );
  }
}