Initial commit

lib/config/tatu_palette.dart

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+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:material_ui/material_ui.dart';
+
+/// TatuChat brand palette, adapted between light and dark themes.
+///
+/// The colors below follow the brand identity:
+///   * Primary (brand):  Emerald Green             #00D084
+///   * Background:       Deep Graphite             #121519 (dark mode)
+///   * Surfaces / Cards: Slate Dark                #1D222A
+///   * Accent:           Electric Cyan             #00E5FF
+///   * Text primary:     Pure White / Ice          #F4F6F8
+///   * Text secondary:   Cool Gray                 #8A94A6
+///   * Alert / Error:    Crimson Rose              #FF4D6D
+abstract class TatuPalette {
+  static const Color brandEmerald = Color(0xFF00D084);
+  static const Color brandGraphite = Color(0xFF121519);
+  static const Color brandSlate = Color(0xFF1D222A);
+  static const Color brandCyan = Color(0xFF00E5FF);
+  static const Color brandIce = Color(0xFFF4F6F8);
+  static const Color brandCoolGray = Color(0xFF8A94A6);
+  static const Color brandCrimson = Color(0xFFFF4D6D);
+
+  static const _Scheme _dark = _Scheme(
+    primary: Color(0xFF00D084),
+    onPrimary: Color(0xFF00281E),
+    primaryContainer: Color(0xFF0E4133),
+    onPrimaryContainer: Color(0xFFBDFFE2),
+    secondary: Color(0xFF8A94A6),
+    onSecondary: Color(0xFF141A24),
+    secondaryContainer: Color(0xFF293240),
+    onSecondaryContainer: Color(0xFFDBE2EE),
+    tertiary: Color(0xFF00E5FF),
+    onTertiary: Color(0xFF003B46),
+    tertiaryContainer: Color(0xFF004A55),
+    onTertiaryContainer: Color(0xFFA6F3FF),
+    error: Color(0xFFFF4D6D),
+    onError: Color(0xFF410013),
+    errorContainer: Color(0xFF7F0024),
+    onErrorContainer: Color(0xFFFFD9DF),
+    surface: Color(0xFF121519),
+    onSurface: Color(0xFFF4F6F8),
+    onSurfaceVariant: Color(0xFF9BA5B6),
+    outline: Color(0xFF6F7B8C),
+    outlineVariant: Color(0xFF323B46),
+    inverseSurface: Color(0xFFE8EBF0),
+    onInverseSurface: Color(0xFF121519),
+    inversePrimary: Color(0xFF008E5F),
+    surfaceLowest: Color(0xFF0C0F13),
+    surfaceLow: Color(0xFF161B21),
+    surfaceContainer: Color(0xFF1D222A),
+    surfaceHigh: Color(0xFF232A34),
+    surfaceHighest: Color(0xFF2A323D),
+    surfaceDim: Color(0xFF121519),
+    surfaceBright: Color(0xFF3A414C),
+  );
+
+  static const _Scheme _light = _Scheme(
+    primary: Color(0xFF00D084),
+    onPrimary: Color(0xFF00291F),
+    primaryContainer: Color(0xFFBDFFE4),
+    onPrimaryContainer: Color(0xFF003A28),
+    secondary: Color(0xFF5F6B7D),
+    onSecondary: Color(0xFFFFFFFF),
+    secondaryContainer: Color(0xFFE2E7EF),
+    onSecondaryContainer: Color(0xFF1C2430),
+    tertiary: Color(0xFF00A6C4),
+    onTertiary: Color(0xFF002A33),
+    tertiaryContainer: Color(0xFFB7F1FF),
+    onTertiaryContainer: Color(0xFF00343D),
+    error: Color(0xFFFF4D6D),
+    onError: Color(0xFF430013),
+    errorContainer: Color(0xFFFFDADD),
+    onErrorContainer: Color(0xFF4B0012),
+    surface: Color(0xFFF5F7FA),
+    onSurface: Color(0xFF121519),
+    onSurfaceVariant: Color(0xFF5F6B7D),
+    outline: Color(0xFF7A8595),
+    outlineVariant: Color(0xFFCCD4DD),
+    inverseSurface: Color(0xFF2C3440),
+    onInverseSurface: Color(0xFFF4F6F8),
+    inversePrimary: Color(0xFF2ED9A0),
+    surfaceLowest: Color(0xFFFFFFFF),
+    surfaceLow: Color(0xFFEDF0F4),
+    surfaceContainer: Color(0xFFE8EBF0),
+    surfaceHigh: Color(0xFFE2E6EC),
+    surfaceHighest: Color(0xFFDDE1E7),
+    surfaceDim: Color(0xFFE8ECF1),
+    surfaceBright: Color(0xFFFBFCFE),
+  );
+
+  /// Builds the ColorScheme for [brightness].
+  ///
+  /// When a [seed] is provided (e.g. a color chosen by the user or a system
+  /// dynamic color), its tonal values are used for the primary family while
+  /// the brand surfaces, accent and error colors are preserved.
+  static ColorScheme scheme(Brightness brightness, [Color? seed]) {
+    final isDark = brightness == Brightness.dark;
+    final p = isDark ? _dark : _light;
+    final base = ColorScheme.fromSeed(
+      brightness: brightness,
+      seedColor: seed ?? p.primary,
+      dynamicSchemeVariant: DynamicSchemeVariant.rainbow,
+    );
+    final useBrandPrimary = seed == null;
+    return base.copyWith(
+      primary: useBrandPrimary ? p.primary : null,
+      onPrimary: useBrandPrimary ? p.onPrimary : null,
+      primaryContainer: useBrandPrimary ? p.primaryContainer : null,
+      onPrimaryContainer: useBrandPrimary ? p.onPrimaryContainer : null,
+      surfaceTint: useBrandPrimary ? p.primary : null,
+      secondary: p.secondary,
+      onSecondary: p.onSecondary,
+      secondaryContainer: p.secondaryContainer,
+      onSecondaryContainer: p.onSecondaryContainer,
+      tertiary: p.tertiary,
+      onTertiary: p.onTertiary,
+      tertiaryContainer: p.tertiaryContainer,
+      onTertiaryContainer: p.onTertiaryContainer,
+      error: p.error,
+      onError: p.onError,
+      errorContainer: p.errorContainer,
+      onErrorContainer: p.onErrorContainer,
+      surface: p.surface,
+      onSurface: p.onSurface,
+      onSurfaceVariant: p.onSurfaceVariant,
+      outline: p.outline,
+      outlineVariant: p.outlineVariant,
+      inverseSurface: p.inverseSurface,
+      onInverseSurface: p.onInverseSurface,
+      inversePrimary: p.inversePrimary,
+      surfaceContainerLowest: p.surfaceLowest,
+      surfaceContainerLow: p.surfaceLow,
+      surfaceContainer: p.surfaceContainer,
+      surfaceContainerHigh: p.surfaceHigh,
+      surfaceContainerHighest: p.surfaceHighest,
+      surfaceDim: p.surfaceDim,
+      surfaceBright: p.surfaceBright,
+    );
+  }
+}
+
+class _Scheme {
+  const _Scheme({
+    required this.primary,
+    required this.onPrimary,
+    required this.primaryContainer,
+    required this.onPrimaryContainer,
+    required this.secondary,
+    required this.onSecondary,
+    required this.secondaryContainer,
+    required this.onSecondaryContainer,
+    required this.tertiary,
+    required this.onTertiary,
+    required this.tertiaryContainer,
+    required this.onTertiaryContainer,
+    required this.error,
+    required this.onError,
+    required this.errorContainer,
+    required this.onErrorContainer,
+    required this.surface,
+    required this.onSurface,
+    required this.onSurfaceVariant,
+    required this.outline,
+    required this.outlineVariant,
+    required this.inverseSurface,
+    required this.onInverseSurface,
+    required this.inversePrimary,
+    required this.surfaceLowest,
+    required this.surfaceLow,
+    required this.surfaceContainer,
+    required this.surfaceHigh,
+    required this.surfaceHighest,
+    required this.surfaceDim,
+    required this.surfaceBright,
+  });
+
+  final Color primary;
+  final Color onPrimary;
+  final Color primaryContainer;
+  final Color onPrimaryContainer;
+  final Color secondary;
+  final Color onSecondary;
+  final Color secondaryContainer;
+  final Color onSecondaryContainer;
+  final Color tertiary;
+  final Color onTertiary;
+  final Color tertiaryContainer;
+  final Color onTertiaryContainer;
+  final Color error;
+  final Color onError;
+  final Color errorContainer;
+  final Color onErrorContainer;
+  final Color surface;
+  final Color onSurface;
+  final Color onSurfaceVariant;
+  final Color outline;
+  final Color outlineVariant;
+  final Color inverseSurface;
+  final Color onInverseSurface;
+  final Color inversePrimary;
+  final Color surfaceLowest;
+  final Color surfaceLow;
+  final Color surfaceContainer;
+  final Color surfaceHigh;
+  final Color surfaceHighest;
+  final Color surfaceDim;
+  final Color surfaceBright;
+}