SpotiFLAC-Mobile/lib/widgets/expressive_icon_button.dart

import 'package:flutter/material.dart';
import 'package:material_3_expressive/material_3_expressive.dart';
import 'package:spotiflac_android/theme/material_expressive.dart';

/// Compact expressive transport/header actions with the same accessible target
/// and tooltip as the standard Material fallback.
class ExpressiveIconButton extends StatelessWidget {
  const ExpressiveIconButton({
    super.key,
    required this.icon,
    required this.tooltip,
    required this.onPressed,
    this.selected,
    this.size = 48,
    this.iconSize = 24,
    this.foregroundColor,
    this.backgroundColor,
  });

  final Widget icon;
  final String tooltip;
  final VoidCallback? onPressed;
  final bool? selected;
  final double size;
  final double iconSize;
  final Color? foregroundColor;
  final Color? backgroundColor;

  @override
  Widget build(BuildContext context) {
    final scheme = Theme.of(context).colorScheme;
    final foreground = WidgetStateProperty.resolveWith<Color?>((states) {
      if (states.contains(WidgetState.disabled)) {
        return scheme.onSurface.withValues(alpha: 0.38);
      }
      return foregroundColor;
    });
    final background = WidgetStateProperty.resolveWith<Color?>((states) {
      if (backgroundColor == null) return Colors.transparent;
      return states.contains(WidgetState.disabled)
          ? scheme.onSurface.withValues(alpha: 0.12)
          : backgroundColor;
    });
    if (!materialExpressiveEnabled(context)) {
      return IconButton(
        icon: icon,
        iconSize: iconSize,
        tooltip: tooltip,
        onPressed: onPressed,
        isSelected: selected,
        style: ButtonStyle(
          minimumSize: WidgetStatePropertyAll(Size.square(size)),
          foregroundColor: foreground,
          backgroundColor: background,
        ),
      );
    }
    return Tooltip(
      message: tooltip,
      child: MaterialExpressiveScope(
        child: M3EIconButton(
          icon: IconTheme.merge(
            data: IconThemeData(size: iconSize),
            child: icon,
          ),
          semanticLabel: tooltip,
          onPressed: onPressed,
          isSelected: selected,
          visualSize: Size.square(size),
          variant: backgroundColor == null
              ? M3EIconButtonVariant.standard
              : M3EIconButtonVariant.filled,
          decoration: M3EIconButtonDecoration(
            foregroundColor: foreground,
            backgroundColor: background,
          ),
        ),
      ),
    );
  }
}