glow static method

Implementation

static List<BoxShadow> glow({
  required Color color,
  required bool isDark,
  double level = 1.0,
  Offset direction = const Offset(0, 1),
}) {
  final ambient = isDark ? 0.45 : 0.16;
  final glowAlpha = isDark ? 0.30 : 0.22;
  final dy = direction.dy;
  final dx = direction.dx;
  return [
    // Tight contact shadow.
    BoxShadow(
      color: Colors.black.withValues(alpha: 0.06 * level),
      offset: Offset(dx * 1, dy * 2),
      blurRadius: 4 * level,
    ),
    // Ambient depth.
    BoxShadow(
      color: Colors.black.withValues(alpha: ambient * 0.5 * level),
      offset: Offset(dx * 8, dy * 12),
      blurRadius: 28 * level,
      spreadRadius: -6 * level,
    ),
    // Colored glow halo.
    BoxShadow(
      color: color.withValues(alpha: glowAlpha * level),
      offset: Offset(dx * 4, dy * 16),
      blurRadius: 36 * level,
      spreadRadius: -10 * level,
    ),
  ];
}