highContrastDarkTheme function

Implementation

ThemeData highContrastDarkTheme() {
  return ThemeData(
    useMaterial3: true,
    brightness: Brightness.dark,
    scaffoldBackgroundColor: kBackgroundDarkHC,
    fontFamily: GoogleFonts.notoSans().fontFamily,
    primaryColor: kPrimaryHighContrast,
    colorScheme: const ColorScheme.dark(
      primary: kPrimaryHighContrast,
      surface: kSurfaceDarkHC,
      onPrimary: Colors.black,
      onSurface: kTextPrimaryDarkHC,
      surfaceContainerHighest: Color(0xFF303030),
      onSurfaceVariant: Colors.white,
      primaryContainer:
          Color(0xFF82B1FF), // Light Blue for contrast against dark
      onPrimaryContainer: Colors.black,
    ),
    appBarTheme: AppBarTheme(
      backgroundColor: kBackgroundDarkHC,
      elevation: 0,
      centerTitle: true,
      iconTheme: const IconThemeData(color: kPrimaryHighContrast, size: 28),
      titleTextStyle: GoogleFonts.spaceGrotesk(
        color: kPrimaryHighContrast,
        fontSize: 22,
        fontWeight: FontWeight.bold,
      ),
      toolbarHeight: 64,
    ),
    switchTheme: SwitchThemeData(
      thumbColor: WidgetStateProperty.all(kPrimaryHighContrast),
      trackColor: WidgetStateProperty.all(Colors.grey),
      materialTapTargetSize: MaterialTapTargetSize.padded,
    ),
    inputDecorationTheme: const InputDecorationTheme(
      filled: true,
      fillColor: kBackgroundDarkHC,
      contentPadding: EdgeInsets.symmetric(horizontal: 20, vertical: 20),
      enabledBorder: OutlineInputBorder(
        borderSide: BorderSide(color: kBorderDarkHC, width: 3),
        borderRadius: BorderRadius.all(Radius.circular(12)),
      ),
      focusedBorder: OutlineInputBorder(
        borderSide: BorderSide(color: kPrimaryHighContrast, width: 4),
        borderRadius: BorderRadius.all(Radius.circular(12)),
      ),
      border: OutlineInputBorder(
        borderSide: BorderSide(color: kBorderDarkHC, width: 3),
        borderRadius: BorderRadius.all(Radius.circular(12)),
      ),
    ),
    textTheme: textTheme().apply(
      bodyColor: kTextPrimaryDarkHC,
      displayColor: kTextPrimaryDarkHC,
    ),
    elevatedButtonTheme: ElevatedButtonThemeData(
      style: ElevatedButton.styleFrom(
        backgroundColor: kPrimaryHighContrast,
        foregroundColor: Colors.black,
        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
        minimumSize: const Size(88, 56),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12),
          side: const BorderSide(color: kBorderDarkHC, width: 4),
        ),
      ),
    ),
    textButtonTheme: TextButtonThemeData(
      style: TextButton.styleFrom(
        foregroundColor: kPrimaryHighContrast,
        padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
        minimumSize: const Size(64, 52),
      ),
    ),
    outlinedButtonTheme: OutlinedButtonThemeData(
      style: OutlinedButton.styleFrom(
        foregroundColor: kPrimaryHighContrast,
        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
        minimumSize: const Size(88, 56),
        side: const BorderSide(color: kBorderDarkHC, width: 5),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
      ),
    ),
    floatingActionButtonTheme: const FloatingActionButtonThemeData(
      backgroundColor: kPrimaryHighContrast,
      foregroundColor: Colors.black,
      iconSize: 32,
      sizeConstraints: BoxConstraints.tightFor(width: 68, height: 68),
    ),
    iconTheme: const IconThemeData(
      color: kTextPrimaryDarkHC,
      size: 28,
    ),
    dividerColor: kBorderDarkHC,
    dividerTheme: const DividerThemeData(
      color: kBorderDarkHC,
      thickness: 2,
      space: 32,
    ),
    cardTheme: CardThemeData(
      color: kSurfaceDarkHC,
      elevation: 0,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(16),
        side: const BorderSide(color: kBorderDarkHC, width: 5),
      ),
      margin: const EdgeInsets.all(12),
    ),
    listTileTheme: const ListTileThemeData(
      contentPadding: EdgeInsets.symmetric(horizontal: 20, vertical: 16),
      minLeadingWidth: 64,
      minVerticalPadding: 16,
      iconColor: kPrimaryHighContrast,
      textColor: kTextPrimaryDarkHC,
    ),
    extensions: <ThemeExtension<dynamic>>[
      DiagramTheme(
        canvasBg: kBackgroundDarkHC,
        panelBg: kSurfaceDarkHC,
        gridLine: Colors.white.withValues(alpha: 0.25),
        nodeBg: kSurfaceDarkHC,
        nodeBorder: kBorderDarkHC,
        textColor: kTextPrimaryDarkHC,
        accentColor: kPrimaryHighContrast,
        isDark: true,
      ),
    ],
  );
}