createTheme static method

ThemeData createTheme({ required Brightness brightness, required Color background, required Color primaryText, Color? secondaryText, required Color accentColor, Color? divider, Color? buttonBackground, required Color buttonText, Color? cardBackground, Color? disabled, required Color error, })

Implementation

static ThemeData createTheme({
  required Brightness brightness,
  required Color background,
  required Color primaryText,
  Color? secondaryText,
  required Color accentColor,
  Color? divider,
  Color? buttonBackground,
  required Color buttonText,
  Color? cardBackground,
  Color? disabled,
  required Color error,
}) {
  final baseTextTheme = brightness == Brightness.dark ? Typography.material2021().white : Typography.material2021().black;

  return ThemeData(
    brightness: brightness,
    scaffoldBackgroundColor: background,
    cardColor: background,
    dividerColor: divider,
    dividerTheme: DividerThemeData(color: divider, space: 1, thickness: 1),
    cardTheme: CardThemeData(
      color: cardBackground,
      margin: EdgeInsets.zero,
      clipBehavior: Clip.antiAliasWithSaveLayer,
    ),
    primaryColor: accentColor,
    dropdownMenuTheme: const DropdownMenuThemeData(),
    textSelectionTheme: TextSelectionThemeData(
      selectionColor: accentColor,
      selectionHandleColor: accentColor,
      cursorColor: accentColor,
    ),
    appBarTheme: AppBarTheme(
      backgroundColor: cardBackground,
      foregroundColor: secondaryText,
      toolbarTextStyle: baseTextTheme.bodyMedium!.copyWith(color: secondaryText, fontSize: 18),
      titleTextStyle: baseTextTheme.titleLarge!.copyWith(color: secondaryText, fontSize: 18),
      iconTheme: IconThemeData(color: secondaryText),
    ),
    iconTheme: IconThemeData(color: secondaryText, size: 16.0),
    buttonTheme: ButtonThemeData(
      textTheme: ButtonTextTheme.primary,
      colorScheme: ColorScheme(
        brightness: brightness,
        primary: accentColor,
        onPrimary: buttonText,
        secondary: accentColor,
        onSecondary: buttonText,
        surface: background,
        onSurface: buttonText,
        error: error,
        onError: buttonText,
      ),
      padding: const EdgeInsets.all(16.0),
    ),
    cupertinoOverrideTheme: CupertinoThemeData(brightness: brightness, primaryColor: accentColor),
    inputDecorationTheme: InputDecorationTheme(
      errorStyle: TextStyle(color: error),
      labelStyle: TextStyle(
        fontFamily: 'Montserrat',
        fontWeight: FontWeight.w600,
        fontSize: 16.0,
        color: primaryText.withValues(alpha: 0.5),
      ),
      hintStyle: TextStyle(color: secondaryText, fontSize: 13.0, fontWeight: FontWeight.w300),
    ),
    fontFamily: 'Montserrat',
    unselectedWidgetColor: hexToColor('#DADCDD'),
    textTheme: TextTheme(
      displayLarge: baseTextTheme.displayLarge!.copyWith(color: primaryText, fontSize: 34.0, fontWeight: FontWeight.bold),
      displayMedium: baseTextTheme.displayMedium!.copyWith(color: primaryText, fontSize: 22, fontWeight: FontWeight.bold),
      headlineLarge: baseTextTheme.headlineLarge!.copyWith(color: secondaryText, fontSize: 20, fontWeight: FontWeight.w600),
      headlineMedium: baseTextTheme.headlineMedium!.copyWith(color: primaryText, fontSize: 18, fontWeight: FontWeight.w600),
      titleLarge: baseTextTheme.titleLarge!.copyWith(color: primaryText, fontSize: 16, fontWeight: FontWeight.w700),
      titleMedium: baseTextTheme.titleMedium!.copyWith(color: primaryText, fontSize: 14, fontWeight: FontWeight.w700),
      bodyLarge: baseTextTheme.bodyLarge!.copyWith(color: secondaryText, fontSize: 15),
      bodyMedium: baseTextTheme.bodyMedium!.copyWith(color: primaryText, fontSize: 12, fontWeight: FontWeight.w400),
      labelLarge: baseTextTheme.labelLarge!.copyWith(color: primaryText, fontSize: 12.0, fontWeight: FontWeight.w700),
      bodySmall: baseTextTheme.bodySmall!.copyWith(color: primaryText, fontSize: 11.0, fontWeight: FontWeight.w300),
      labelSmall: baseTextTheme.labelSmall!.copyWith(color: secondaryText, fontSize: 11.0, fontWeight: FontWeight.w500),
    ),
    colorScheme: ColorScheme.fromSwatch(
      brightness: brightness,
      primarySwatch: MaterialColor(accentColor.toARGB32(), <int, Color>{
        50: accentColor.withValues(alpha: 0.1),
        100: accentColor.withValues(alpha: 0.2),
        200: accentColor.withValues(alpha: 0.3),
        300: accentColor.withValues(alpha: 0.4),
        400: accentColor.withValues(alpha: 0.5),
        500: accentColor.withValues(alpha: 0.6),
        600: accentColor.withValues(alpha: 0.7),
        700: accentColor.withValues(alpha: 0.8),
        800: accentColor.withValues(alpha: 0.9),
        900: accentColor.withValues(alpha: 1.0),
      }),
      accentColor: accentColor,
      backgroundColor: background,
      errorColor: error,
    ).copyWith(
      secondary: accentColor,
      onPrimary: buttonText,
      onSecondary: buttonText,
      onSurface: buttonText,
      onError: buttonText,
    ),
  );
}