admin1
133 lines
4.0 KiB
Dart
133 lines
4.0 KiB
Dart
import 'dart:ui' show ImageFilter;
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../../providers/emby_headers_provider.dart';
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import '../../providers/shell_backdrop_provider.dart';
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class ShellBackdropLayer extends ConsumerWidget {
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final bool active;
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const ShellBackdropLayer({super.key, this.active = false});
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static const double _blurSigma = 32;
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static const Duration _crossfade = Duration(milliseconds: 350);
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static const LinearGradient _immersiveDarkFallback = LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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stops: [0.0, 0.4, 1.0],
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colors: [Color(0xFF1A1A1A), Color(0xFF0F0F0F), Color(0xFF000000)],
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);
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final backdrop = active ? ref.watch(shellBackdropProvider) : null;
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final imageHeaders = ref.watch(embyImageHeadersProvider).value;
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final scheme = Theme.of(context).colorScheme;
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final Widget child;
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if (backdrop != null) {
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child = _BackdropImage(
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key: ValueKey<String>(backdrop.primaryImageUrl),
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state: backdrop,
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imageHeaders: imageHeaders,
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);
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} else if (active) {
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child = const DecoratedBox(
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key: ValueKey<String>('__immersive_dark_fallback__'),
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decoration: BoxDecoration(gradient: _immersiveDarkFallback),
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);
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} else {
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child = ColoredBox(
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key: ValueKey<String>('__surface__${scheme.brightness.name}'),
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color: scheme.surface,
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);
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}
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return AnimatedSwitcher(
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duration: _crossfade,
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switchInCurve: Curves.easeOut,
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switchOutCurve: Curves.easeOut,
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layoutBuilder: (currentChild, previousChildren) {
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final seen = <Key?>{if (currentChild != null) currentChild.key};
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final filtered = previousChildren.where((child) {
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if (seen.contains(child.key)) return false;
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seen.add(child.key);
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return true;
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}).toList();
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return Stack(
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fit: StackFit.expand,
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children: [...filtered, if (currentChild != null) currentChild],
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);
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},
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child: child,
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);
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}
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}
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class _BackdropImage extends StatelessWidget {
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final ShellBackdropState state;
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final Map<String, String>? imageHeaders;
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const _BackdropImage({
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super.key,
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required this.state,
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required this.imageHeaders,
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});
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@override
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Widget build(BuildContext context) {
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final fallbackUrl = state.fallbackImageUrls.isNotEmpty
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? state.fallbackImageUrls.first
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: state.primaryImageUrl;
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final surface = Theme.of(context).colorScheme.surface;
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return Stack(
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fit: StackFit.expand,
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children: [
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ImageFiltered(
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imageFilter: ImageFilter.blur(
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sigmaX: ShellBackdropLayer._blurSigma,
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sigmaY: ShellBackdropLayer._blurSigma,
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tileMode: TileMode.clamp,
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),
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child: CachedNetworkImage(
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imageUrl: state.primaryImageUrl,
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httpHeaders: imageHeaders,
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fit: BoxFit.cover,
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memCacheWidth: 800,
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fadeInDuration: const Duration(milliseconds: 200),
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placeholder: (_, _) => ColoredBox(color: surface),
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errorWidget: (_, _, _) => CachedNetworkImage(
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imageUrl: fallbackUrl,
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httpHeaders: imageHeaders,
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fit: BoxFit.cover,
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memCacheWidth: 800,
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placeholder: (_, _) => ColoredBox(color: surface),
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errorWidget: (_, _, _) => ColoredBox(color: surface),
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),
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),
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),
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const DecoratedBox(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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stops: [0.0, 0.4, 1.0],
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colors: [Color(0x33000000), Color(0x59000000), Color(0xB3000000)],
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),
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),
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),
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],
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);
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}
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}
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