Skeuomorphism

class SkeuoButton extends StatefulWidget {
  @override
  State<SkeuoButton> createState() => _SkeuoButtonState();
}

class _SkeuoButtonState extends State<SkeuoButton> {
  bool _isPressed = false;

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTapDown: (_) => setState(() => _isPressed = true),
      onTapUp: (_) => setState(() => _isPressed = false),
      onTapCancel: () => setState(() => _isPressed = false),
      child: AnimatedContainer(
        duration: const Duration(milliseconds: 100),
        width: 80,
        height: 80,
        decoration: BoxDecoration(
          shape: BoxShape.circle,
          // Brushed metal gradient
          gradient: LinearGradient(
            colors: [Colors.grey[300]!, Colors.grey[600]!],
            begin: Alignment.topCenter,
            end: Alignment.bottomCenter,
          ),
          border: Border.all(color: Colors.grey[500]!, width: 1),
          boxShadow: [
            // Outer drop shadow
            BoxShadow(
              color: Colors.black.withOpacity(_isPressed ? 0.2 : 0.5),
              blurRadius: _isPressed ? 4 : 12,
              offset: Offset(0, _isPressed ? 2 : 6),
            ),
            // Inner top highlight (faked with a light inset)
            BoxShadow(
              color: Colors.white.withOpacity(0.6),
              blurRadius: 1,
              offset: const Offset(0, -1),
              spreadRadius: -1,
            ),
          ],
        ),
        transform: Matrix4.identity()..scale(_isPressed ? 0.96 : 1.0),
        alignment: Alignment.center,
        child: const Text('POWER',
          style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold,
            fontSize: 14, shadows: [
              Shadow(color: Colors.black54, offset: Offset(0, 1), blurRadius: 2),
            ])),
      ),
    );
  }
}

const SkeuoButton = () => {
  const [pressed, setPressed] = useState(false);
  
  return (
    <Pressable
      onPressIn={() => setPressed(true)}
      onPressOut={() => setPressed(false)}
      style={{
        width: 80,
        height: 80,
        borderRadius: 40,
        alignItems: 'center',
        justifyContent: 'center',
        // Metal gradient must be done via an image or LinearGradient component
        backgroundColor: '#A0A0A0',
        borderWidth: 1,
        borderColor: '#7A7A7A',
        // Shadow changes on press
        shadowColor: '#000',
        shadowOffset: { width: 0, height: pressed ? 1 : 4 },
        shadowOpacity: pressed ? 0.2 : 0.5,
        shadowRadius: pressed ? 2 : 6,
        elevation: pressed ? 2 : 8,
        transform: [{ scale: pressed ? 0.96 : 1 }],
      }}
    >
      <Text style={{
        color: '#FFF',
        fontWeight: '700',
        fontSize: 14,
        textShadowColor: 'rgba(0,0,0,0.5)',
        textShadowOffset: { width: 0, height: 1 },
        textShadowRadius: 2,
      }}>
        POWER
      </Text>
    </Pressable>
  );
};

@Composable
fun SkeuoButton() {
    var isPressed by remember { mutableStateOf(false) }
    val scale by animateFloatAsState(if (isPressed) 0.96f else 1f)
    val elevation by animateDpAsState(if (isPressed) 2.dp else 8.dp)
    
    Box(
        modifier = Modifier
            .size(80.dp)
            .graphicsLayer { scaleX = scale; scaleY = scale }
            .shadow(elevation, CircleShape)
            .clip(CircleShape)
            .background(
                Brush.verticalGradient(
                    colors = listOf(Color(0xFFE0E0E0), Color(0xFFA0A0A0))
                )
            )
            .border(1.dp, Color(0xFF7A7A7A), CircleShape)
            .pointerInput(Unit) {
                detectTapGestures(
                    onPress = {
                        isPressed = true
                        tryAwaitRelease()
                        isPressed = false
                    }
                )
            },
        contentAlignment = Alignment.Center,
    ) {
        Text("POWER",
            color = Color.White,
            fontWeight = FontWeight.Bold,
            fontSize = 14.sp,
            style = TextStyle(shadow = Shadow(
                color = Color.Black.copy(alpha = 0.5f),
                offset = Offset(0f, 2f),
                blurRadius = 4f,
            )))
    }
}