custom palette generator

lib/theme/theme_from_cover_provider.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:shelfsdk/audiobookshelf_api.dart';
+import 'package:whispering_pages/api/image_provider.dart';
+
+part 'theme_from_cover_provider.g.dart';
+
+@riverpod
+FutureOr<ColorScheme> themeFromCover(
+  ThemeFromCoverRef ref,
+  ImageProvider<Object> img, {
+  Brightness brightness = Brightness.dark,
+}) {
+  return ColorScheme.fromImageProvider(
+    provider: img,
+    brightness: brightness,
+  );
+}
+
+@riverpod
+FutureOr<ColorScheme?> themeOfLibraryItem(
+  ThemeOfLibraryItemRef ref,
+  LibraryItem? item, {
+  Brightness brightness = Brightness.dark,
+}) async {
+  if (item == null) {
+    return null;
+  }
+  final coverImage = await ref.watch(coverImageProvider(item).future);
+  final val = await ref.watch(
+    themeFromCoverProvider(MemoryImage(coverImage), brightness: brightness)
+        .future,
+  );
+  return val;
+  // coverImage.when(
+  //   data: (value) async {
+  //     debugPrint('CoverImage: $value');
+  //     final val = ref.watch(themeFromCoverProvider(MemoryImage(value)));
+  //     debugPrint('ColorScheme generated: $val');
+  //     ref.invalidateSelf();
+  //     return val;
+  //   },
+  //   loading: () => null,
+  //   error: (error, stackTrace) => null,
+  // );
+  // return null;
+}

lib/theme/theme_from_cover_provider.g.dart

@@ -0,0 +1,325 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'theme_from_cover_provider.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$themeFromCoverHash() => r'e52e7b9c644f3fcc266cfc480b7003ec7492431c';
+
+/// Copied from Dart SDK
+class _SystemHash {
+  _SystemHash._();
+
+  static int combine(int hash, int value) {
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + value);
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10));
+    return hash ^ (hash >> 6);
+  }
+
+  static int finish(int hash) {
+    // ignore: parameter_assignments
+    hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
+    // ignore: parameter_assignments
+    hash = hash ^ (hash >> 11);
+    return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
+  }
+}
+
+/// See also [themeFromCover].
+@ProviderFor(themeFromCover)
+const themeFromCoverProvider = ThemeFromCoverFamily();
+
+/// See also [themeFromCover].
+class ThemeFromCoverFamily extends Family<AsyncValue<ColorScheme>> {
+  /// See also [themeFromCover].
+  const ThemeFromCoverFamily();
+
+  /// See also [themeFromCover].
+  ThemeFromCoverProvider call(
+    ImageProvider<Object> img, {
+    Brightness brightness = Brightness.dark,
+  }) {
+    return ThemeFromCoverProvider(
+      img,
+      brightness: brightness,
+    );
+  }
+
+  @override
+  ThemeFromCoverProvider getProviderOverride(
+    covariant ThemeFromCoverProvider provider,
+  ) {
+    return call(
+      provider.img,
+      brightness: provider.brightness,
+    );
+  }
+
+  static const Iterable<ProviderOrFamily>? _dependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get dependencies => _dependencies;
+
+  static const Iterable<ProviderOrFamily>? _allTransitiveDependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get allTransitiveDependencies =>
+      _allTransitiveDependencies;
+
+  @override
+  String? get name => r'themeFromCoverProvider';
+}
+
+/// See also [themeFromCover].
+class ThemeFromCoverProvider extends AutoDisposeFutureProvider<ColorScheme> {
+  /// See also [themeFromCover].
+  ThemeFromCoverProvider(
+    ImageProvider<Object> img, {
+    Brightness brightness = Brightness.dark,
+  }) : this._internal(
+          (ref) => themeFromCover(
+            ref as ThemeFromCoverRef,
+            img,
+            brightness: brightness,
+          ),
+          from: themeFromCoverProvider,
+          name: r'themeFromCoverProvider',
+          debugGetCreateSourceHash:
+              const bool.fromEnvironment('dart.vm.product')
+                  ? null
+                  : _$themeFromCoverHash,
+          dependencies: ThemeFromCoverFamily._dependencies,
+          allTransitiveDependencies:
+              ThemeFromCoverFamily._allTransitiveDependencies,
+          img: img,
+          brightness: brightness,
+        );
+
+  ThemeFromCoverProvider._internal(
+    super._createNotifier, {
+    required super.name,
+    required super.dependencies,
+    required super.allTransitiveDependencies,
+    required super.debugGetCreateSourceHash,
+    required super.from,
+    required this.img,
+    required this.brightness,
+  }) : super.internal();
+
+  final ImageProvider<Object> img;
+  final Brightness brightness;
+
+  @override
+  Override overrideWith(
+    FutureOr<ColorScheme> Function(ThemeFromCoverRef provider) create,
+  ) {
+    return ProviderOverride(
+      origin: this,
+      override: ThemeFromCoverProvider._internal(
+        (ref) => create(ref as ThemeFromCoverRef),
+        from: from,
+        name: null,
+        dependencies: null,
+        allTransitiveDependencies: null,
+        debugGetCreateSourceHash: null,
+        img: img,
+        brightness: brightness,
+      ),
+    );
+  }
+
+  @override
+  AutoDisposeFutureProviderElement<ColorScheme> createElement() {
+    return _ThemeFromCoverProviderElement(this);
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return other is ThemeFromCoverProvider &&
+        other.img == img &&
+        other.brightness == brightness;
+  }
+
+  @override
+  int get hashCode {
+    var hash = _SystemHash.combine(0, runtimeType.hashCode);
+    hash = _SystemHash.combine(hash, img.hashCode);
+    hash = _SystemHash.combine(hash, brightness.hashCode);
+
+    return _SystemHash.finish(hash);
+  }
+}
+
+mixin ThemeFromCoverRef on AutoDisposeFutureProviderRef<ColorScheme> {
+  /// The parameter `img` of this provider.
+  ImageProvider<Object> get img;
+
+  /// The parameter `brightness` of this provider.
+  Brightness get brightness;
+}
+
+class _ThemeFromCoverProviderElement
+    extends AutoDisposeFutureProviderElement<ColorScheme>
+    with ThemeFromCoverRef {
+  _ThemeFromCoverProviderElement(super.provider);
+
+  @override
+  ImageProvider<Object> get img => (origin as ThemeFromCoverProvider).img;
+  @override
+  Brightness get brightness => (origin as ThemeFromCoverProvider).brightness;
+}
+
+String _$themeOfLibraryItemHash() =>
+    r'53be78f35075ced924e7b2f3cb7310a09d4cd232';
+
+/// See also [themeOfLibraryItem].
+@ProviderFor(themeOfLibraryItem)
+const themeOfLibraryItemProvider = ThemeOfLibraryItemFamily();
+
+/// See also [themeOfLibraryItem].
+class ThemeOfLibraryItemFamily extends Family<AsyncValue<ColorScheme?>> {
+  /// See also [themeOfLibraryItem].
+  const ThemeOfLibraryItemFamily();
+
+  /// See also [themeOfLibraryItem].
+  ThemeOfLibraryItemProvider call(
+    LibraryItem? item, {
+    Brightness brightness = Brightness.dark,
+  }) {
+    return ThemeOfLibraryItemProvider(
+      item,
+      brightness: brightness,
+    );
+  }
+
+  @override
+  ThemeOfLibraryItemProvider getProviderOverride(
+    covariant ThemeOfLibraryItemProvider provider,
+  ) {
+    return call(
+      provider.item,
+      brightness: provider.brightness,
+    );
+  }
+
+  static const Iterable<ProviderOrFamily>? _dependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get dependencies => _dependencies;
+
+  static const Iterable<ProviderOrFamily>? _allTransitiveDependencies = null;
+
+  @override
+  Iterable<ProviderOrFamily>? get allTransitiveDependencies =>
+      _allTransitiveDependencies;
+
+  @override
+  String? get name => r'themeOfLibraryItemProvider';
+}
+
+/// See also [themeOfLibraryItem].
+class ThemeOfLibraryItemProvider
+    extends AutoDisposeFutureProvider<ColorScheme?> {
+  /// See also [themeOfLibraryItem].
+  ThemeOfLibraryItemProvider(
+    LibraryItem? item, {
+    Brightness brightness = Brightness.dark,
+  }) : this._internal(
+          (ref) => themeOfLibraryItem(
+            ref as ThemeOfLibraryItemRef,
+            item,
+            brightness: brightness,
+          ),
+          from: themeOfLibraryItemProvider,
+          name: r'themeOfLibraryItemProvider',
+          debugGetCreateSourceHash:
+              const bool.fromEnvironment('dart.vm.product')
+                  ? null
+                  : _$themeOfLibraryItemHash,
+          dependencies: ThemeOfLibraryItemFamily._dependencies,
+          allTransitiveDependencies:
+              ThemeOfLibraryItemFamily._allTransitiveDependencies,
+          item: item,
+          brightness: brightness,
+        );
+
+  ThemeOfLibraryItemProvider._internal(
+    super._createNotifier, {
+    required super.name,
+    required super.dependencies,
+    required super.allTransitiveDependencies,
+    required super.debugGetCreateSourceHash,
+    required super.from,
+    required this.item,
+    required this.brightness,
+  }) : super.internal();
+
+  final LibraryItem? item;
+  final Brightness brightness;
+
+  @override
+  Override overrideWith(
+    FutureOr<ColorScheme?> Function(ThemeOfLibraryItemRef provider) create,
+  ) {
+    return ProviderOverride(
+      origin: this,
+      override: ThemeOfLibraryItemProvider._internal(
+        (ref) => create(ref as ThemeOfLibraryItemRef),
+        from: from,
+        name: null,
+        dependencies: null,
+        allTransitiveDependencies: null,
+        debugGetCreateSourceHash: null,
+        item: item,
+        brightness: brightness,
+      ),
+    );
+  }
+
+  @override
+  AutoDisposeFutureProviderElement<ColorScheme?> createElement() {
+    return _ThemeOfLibraryItemProviderElement(this);
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return other is ThemeOfLibraryItemProvider &&
+        other.item == item &&
+        other.brightness == brightness;
+  }
+
+  @override
+  int get hashCode {
+    var hash = _SystemHash.combine(0, runtimeType.hashCode);
+    hash = _SystemHash.combine(hash, item.hashCode);
+    hash = _SystemHash.combine(hash, brightness.hashCode);
+
+    return _SystemHash.finish(hash);
+  }
+}
+
+mixin ThemeOfLibraryItemRef on AutoDisposeFutureProviderRef<ColorScheme?> {
+  /// The parameter `item` of this provider.
+  LibraryItem? get item;
+
+  /// The parameter `brightness` of this provider.
+  Brightness get brightness;
+}
+
+class _ThemeOfLibraryItemProviderElement
+    extends AutoDisposeFutureProviderElement<ColorScheme?>
+    with ThemeOfLibraryItemRef {
+  _ThemeOfLibraryItemProviderElement(super.provider);
+
+  @override
+  LibraryItem? get item => (origin as ThemeOfLibraryItemProvider).item;
+  @override
+  Brightness get brightness =>
+      (origin as ThemeOfLibraryItemProvider).brightness;
+}
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member