resolve method

Implementation

Color resolve(GhosttyTerminalColor? color, {required Color fallback}) {
  if (color == null) {
    return fallback;
  }
  if (!color.isPalette) {
    return Color(0xFF000000 | color.rgb!);
  }

  final index = color.paletteIndex!;
  if (index >= 0 && index < ansi.length) {
    return ansi[index];
  }
  if (index >= 16 && index <= 231) {
    final cubeIndex = index - 16;
    const levels = <int>[0, 95, 135, 175, 215, 255];
    final red = levels[(cubeIndex ~/ 36) % 6];
    final green = levels[(cubeIndex ~/ 6) % 6];
    final blue = levels[cubeIndex % 6];
    return Color.fromARGB(0xFF, red, green, blue);
  }
  if (index >= 232 && index <= 255) {
    final value = 8 + (index - 232) * 10;
    return Color.fromARGB(0xFF, value, value, value);
  }
  return fallback;
}