mirror of
https://github.com/immich-app/immich.git
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e52b9d15b5
* chore: bump dart sdk to 3.8 * chore: make build * make pigeon * chore: format files --------- Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
638 lines
23 KiB
Dart
638 lines
23 KiB
Dart
import 'dart:async';
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import 'package:auto_route/auto_route.dart';
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import 'package:easy_localization/easy_localization.dart';
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import 'package:flutter/material.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
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import 'package:immich_mobile/domain/models/timeline.model.dart';
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import 'package:immich_mobile/domain/services/timeline.service.dart';
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import 'package:immich_mobile/domain/utils/event_stream.dart';
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import 'package:immich_mobile/extensions/build_context_extensions.dart';
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import 'package:immich_mobile/extensions/scroll_extensions.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/asset_stack.provider.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/asset_stack.widget.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/asset_viewer.state.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/bottom_bar.widget.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/bottom_sheet.widget.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/top_app_bar.widget.dart';
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import 'package:immich_mobile/presentation/widgets/asset_viewer/video_viewer.widget.dart';
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import 'package:immich_mobile/presentation/widgets/images/image_provider.dart';
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import 'package:immich_mobile/presentation/widgets/images/thumbnail.widget.dart';
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import 'package:immich_mobile/providers/asset_viewer/is_motion_video_playing.provider.dart';
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import 'package:immich_mobile/providers/asset_viewer/video_player_controls_provider.dart';
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import 'package:immich_mobile/providers/asset_viewer/video_player_value_provider.dart';
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import 'package:immich_mobile/providers/cast.provider.dart';
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import 'package:immich_mobile/providers/infrastructure/asset_viewer/current_asset.provider.dart';
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import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
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import 'package:immich_mobile/providers/routes.provider.dart';
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import 'package:immich_mobile/widgets/photo_view/photo_view.dart';
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import 'package:immich_mobile/widgets/photo_view/photo_view_gallery.dart';
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import 'package:platform/platform.dart';
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@RoutePage()
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class AssetViewerPage extends StatelessWidget {
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final int initialIndex;
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final TimelineService timelineService;
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final int? heroOffset;
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const AssetViewerPage({super.key, required this.initialIndex, required this.timelineService, this.heroOffset});
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@override
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Widget build(BuildContext context) {
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// This is necessary to ensure that the timeline service is available
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// since the Timeline and AssetViewer are on different routes / Widget subtrees.
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return ProviderScope(
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overrides: [timelineServiceProvider.overrideWithValue(timelineService)],
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child: AssetViewer(initialIndex: initialIndex, heroOffset: heroOffset),
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);
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}
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}
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class AssetViewer extends ConsumerStatefulWidget {
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final int initialIndex;
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final Platform? platform;
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final int? heroOffset;
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const AssetViewer({super.key, required this.initialIndex, this.platform, this.heroOffset});
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@override
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ConsumerState createState() => _AssetViewerState();
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}
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const double _kBottomSheetMinimumExtent = 0.4;
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const double _kBottomSheetSnapExtent = 0.7;
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class _AssetViewerState extends ConsumerState<AssetViewer> {
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late PageController pageController;
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late DraggableScrollableController bottomSheetController;
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PersistentBottomSheetController? sheetCloseController;
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// PhotoViewGallery takes care of disposing it's controllers
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PhotoViewControllerBase? viewController;
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StreamSubscription? reloadSubscription;
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late Platform platform;
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late final int heroOffset;
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late PhotoViewControllerValue initialPhotoViewState;
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bool? hasDraggedDown;
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bool isSnapping = false;
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bool blockGestures = false;
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bool dragInProgress = false;
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bool shouldPopOnDrag = false;
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bool assetReloadRequested = false;
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double? initialScale;
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double previousExtent = _kBottomSheetMinimumExtent;
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Offset dragDownPosition = Offset.zero;
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int totalAssets = 0;
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int stackIndex = 0;
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BuildContext? scaffoldContext;
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Map<String, GlobalKey> videoPlayerKeys = {};
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// Delayed operations that should be cancelled on disposal
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final List<Timer> _delayedOperations = [];
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@override
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void initState() {
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super.initState();
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pageController = PageController(initialPage: widget.initialIndex);
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platform = widget.platform ?? const LocalPlatform();
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totalAssets = ref.read(timelineServiceProvider).totalAssets;
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bottomSheetController = DraggableScrollableController();
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_onAssetChanged(widget.initialIndex);
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});
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reloadSubscription = EventStream.shared.listen(_onEvent);
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heroOffset = widget.heroOffset ?? TabsRouterScope.of(context)?.controller.activeIndex ?? 0;
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}
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@override
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void dispose() {
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pageController.dispose();
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bottomSheetController.dispose();
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_cancelTimers();
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reloadSubscription?.cancel();
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super.dispose();
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}
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bool get showingBottomSheet => ref.read(assetViewerProvider.select((s) => s.showingBottomSheet));
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Color get backgroundColor {
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final opacity = ref.read(assetViewerProvider.select((s) => s.backgroundOpacity));
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return Colors.black.withAlpha(opacity);
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}
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void _cancelTimers() {
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for (final timer in _delayedOperations) {
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timer.cancel();
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}
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_delayedOperations.clear();
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}
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// This is used to calculate the scale of the asset when the bottom sheet is showing.
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// It is a small increment to ensure that the asset is slightly zoomed in when the
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// bottom sheet is showing, which emulates the zoom effect.
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double get _getScaleForBottomSheet => (viewController?.prevValue.scale ?? viewController?.value.scale ?? 1.0) + 0.01;
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double _getVerticalOffsetForBottomSheet(double extent) =>
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(context.height * extent) - (context.height * _kBottomSheetMinimumExtent);
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Future<void> _precacheImage(int index) async {
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if (!mounted || index < 0 || index >= totalAssets) {
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return;
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}
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final asset = ref.read(timelineServiceProvider).getAsset(index);
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final screenSize = Size(context.width, context.height);
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// Precache both thumbnail and full image for smooth transitions
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unawaited(
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Future.wait([
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precacheImage(
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getThumbnailImageProvider(asset: asset, size: screenSize),
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context,
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onError: (_, __) {},
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),
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precacheImage(getFullImageProvider(asset, size: screenSize), context, onError: (_, __) {}),
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]),
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);
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}
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void _onAssetChanged(int index) {
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final asset = ref.read(timelineServiceProvider).getAsset(index);
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// Always holds the current asset from the timeline
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ref.read(assetViewerProvider.notifier).setAsset(asset);
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// The currentAssetNotifier actually holds the current asset that is displayed
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// which could be stack children as well
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ref.read(currentAssetNotifier.notifier).setAsset(asset);
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if (asset.isVideo || asset.isMotionPhoto) {
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ref.read(videoPlaybackValueProvider.notifier).reset();
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ref.read(videoPlayerControlsProvider.notifier).pause();
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}
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unawaited(ref.read(timelineServiceProvider).preCacheAssets(index));
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_cancelTimers();
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// This will trigger the pre-caching of adjacent assets ensuring
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// that they are ready when the user navigates to them.
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final timer = Timer(Durations.medium4, () {
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// Check if widget is still mounted before proceeding
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if (!mounted) return;
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for (final offset in [-1, 1]) {
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unawaited(_precacheImage(index + offset));
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}
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});
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_delayedOperations.add(timer);
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_handleCasting(asset);
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}
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void _handleCasting(BaseAsset asset) {
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if (!ref.read(castProvider).isCasting) return;
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// hide any casting snackbars if they exist
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context.scaffoldMessenger.hideCurrentSnackBar();
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// send image to casting if the server has it
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if (asset.hasRemote) {
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final remoteAsset = asset as RemoteAsset;
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ref.read(castProvider.notifier).loadMedia(remoteAsset, false);
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} else {
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// casting cannot show local assets
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context.scaffoldMessenger.clearSnackBars();
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if (ref.read(castProvider).isCasting) {
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ref.read(castProvider.notifier).stop();
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context.scaffoldMessenger.showSnackBar(
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SnackBar(
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duration: const Duration(seconds: 2),
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content: Text(
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"local_asset_cast_failed".tr(),
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style: context.textTheme.bodyLarge?.copyWith(color: context.primaryColor),
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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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void _onPageBuild(PhotoViewControllerBase controller) {
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viewController ??= controller;
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if (showingBottomSheet) {
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final verticalOffset =
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(context.height * bottomSheetController.size) - (context.height * _kBottomSheetMinimumExtent);
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controller.position = Offset(0, -verticalOffset);
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}
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}
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void _onPageChanged(int index, PhotoViewControllerBase? controller) {
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_onAssetChanged(index);
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viewController = controller;
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// If the bottom sheet is showing, we need to adjust scale the asset to
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// emulate the zoom effect
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if (showingBottomSheet) {
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initialScale = controller?.scale;
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controller?.scale = _getScaleForBottomSheet;
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}
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}
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void _onDragStart(
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_,
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DragStartDetails details,
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PhotoViewControllerBase controller,
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PhotoViewScaleStateController scaleStateController,
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) {
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viewController = controller;
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dragDownPosition = details.localPosition;
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initialPhotoViewState = controller.value;
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final isZoomed =
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scaleStateController.scaleState == PhotoViewScaleState.zoomedIn ||
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scaleStateController.scaleState == PhotoViewScaleState.covering;
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if (!showingBottomSheet && isZoomed) {
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blockGestures = true;
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}
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}
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void _onDragEnd(BuildContext ctx, _, __) {
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dragInProgress = false;
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if (shouldPopOnDrag) {
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// Dismiss immediately without state updates to avoid rebuilds
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ctx.maybePop();
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return;
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}
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// Do not reset the state if the bottom sheet is showing
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if (showingBottomSheet) {
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_snapBottomSheet();
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return;
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}
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// If the gestures are blocked, do not reset the state
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if (blockGestures) {
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blockGestures = false;
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return;
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}
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shouldPopOnDrag = false;
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hasDraggedDown = null;
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viewController?.animateMultiple(
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position: initialPhotoViewState.position,
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scale: initialPhotoViewState.scale,
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rotation: initialPhotoViewState.rotation,
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);
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ref.read(assetViewerProvider.notifier).setOpacity(255);
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}
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void _onDragUpdate(BuildContext ctx, DragUpdateDetails details, _) {
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if (blockGestures) {
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return;
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}
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dragInProgress = true;
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final delta = details.localPosition - dragDownPosition;
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hasDraggedDown ??= delta.dy > 0;
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if (!hasDraggedDown! || showingBottomSheet) {
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_handleDragUp(ctx, delta);
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return;
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}
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_handleDragDown(ctx, delta);
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}
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void _handleDragUp(BuildContext ctx, Offset delta) {
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const double openThreshold = 50;
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final position = initialPhotoViewState.position + Offset(0, delta.dy);
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final distanceToOrigin = position.distance;
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viewController?.updateMultiple(position: position);
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// Moves the bottom sheet when the asset is being dragged up
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if (showingBottomSheet && bottomSheetController.isAttached) {
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final centre = (ctx.height * _kBottomSheetMinimumExtent);
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bottomSheetController.jumpTo((centre + distanceToOrigin) / ctx.height);
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}
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if (distanceToOrigin > openThreshold && !showingBottomSheet) {
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_openBottomSheet(ctx);
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}
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}
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void _handleDragDown(BuildContext ctx, Offset delta) {
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const double dragRatio = 0.2;
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const double popThreshold = 75;
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final distance = delta.distance;
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shouldPopOnDrag = delta.dy > 0 && distance > popThreshold;
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final maxScaleDistance = ctx.height * 0.5;
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final scaleReduction = (distance / maxScaleDistance).clamp(0.0, dragRatio);
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double? updatedScale;
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if (initialPhotoViewState.scale != null) {
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updatedScale = initialPhotoViewState.scale! * (1.0 - scaleReduction);
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}
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final backgroundOpacity = (255 * (1.0 - (scaleReduction / dragRatio))).round();
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viewController?.updateMultiple(position: initialPhotoViewState.position + delta, scale: updatedScale);
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ref.read(assetViewerProvider.notifier).setOpacity(backgroundOpacity);
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}
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void _onTapDown(_, __, ___) {
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if (!showingBottomSheet) {
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ref.read(assetViewerProvider.notifier).toggleControls();
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}
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}
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bool _onNotification(Notification delta) {
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if (delta is DraggableScrollableNotification) {
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_handleDraggableNotification(delta);
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}
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// Handle sheet snap manually so that the it snaps only at _kBottomSheetSnapExtent but not after
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// the isSnapping guard is to prevent the notification from recursively handling the
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// notification, eventually resulting in a heap overflow
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if (!isSnapping && delta is ScrollEndNotification) {
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_snapBottomSheet();
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}
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return false;
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}
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void _handleDraggableNotification(DraggableScrollableNotification delta) {
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final currentExtent = delta.extent;
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final isDraggingDown = currentExtent < previousExtent;
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previousExtent = currentExtent;
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// Closes the bottom sheet if the user is dragging down
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if (isDraggingDown && delta.extent < 0.55) {
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if (dragInProgress) {
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blockGestures = true;
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}
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sheetCloseController?.close();
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}
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// If the asset is being dragged down, we do not want to update the asset position again
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if (dragInProgress) {
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return;
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}
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final verticalOffset = _getVerticalOffsetForBottomSheet(delta.extent);
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// Moves the asset when the bottom sheet is being dragged
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if (verticalOffset > 0) {
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viewController?.position = Offset(0, -verticalOffset);
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}
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}
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void _onEvent(Event event) {
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if (event is TimelineReloadEvent) {
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_onTimelineReloadEvent();
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return;
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}
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if (event is ViewerReloadAssetEvent) {
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assetReloadRequested = true;
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return;
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}
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if (event is ViewerOpenBottomSheetEvent) {
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final extent = _kBottomSheetMinimumExtent + 0.3;
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_openBottomSheet(scaffoldContext!, extent: extent);
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final offset = _getVerticalOffsetForBottomSheet(extent);
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viewController?.position = Offset(0, -offset);
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return;
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}
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}
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void _onTimelineReloadEvent() {
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totalAssets = ref.read(timelineServiceProvider).totalAssets;
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if (totalAssets == 0) {
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context.maybePop();
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return;
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}
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if (assetReloadRequested) {
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assetReloadRequested = false;
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_onAssetReloadEvent();
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return;
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}
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}
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void _onAssetReloadEvent() {
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setState(() {
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final index = pageController.page?.round() ?? 0;
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final newAsset = ref.read(timelineServiceProvider).getAsset(index);
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final currentAsset = ref.read(currentAssetNotifier);
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// Do not reload / close the bottom sheet if the asset has not changed
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if (newAsset.heroTag == currentAsset?.heroTag) {
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return;
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}
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_onAssetChanged(pageController.page!.round());
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sheetCloseController?.close();
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});
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}
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void _openBottomSheet(BuildContext ctx, {double extent = _kBottomSheetMinimumExtent}) {
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ref.read(assetViewerProvider.notifier).setBottomSheet(true);
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initialScale = viewController?.scale;
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viewController?.updateMultiple(scale: _getScaleForBottomSheet);
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previousExtent = _kBottomSheetMinimumExtent;
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sheetCloseController = showBottomSheet(
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context: ctx,
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sheetAnimationStyle: const AnimationStyle(duration: Durations.short4, reverseDuration: Durations.short2),
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constraints: const BoxConstraints(maxWidth: double.infinity),
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shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(20.0))),
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backgroundColor: ctx.colorScheme.surfaceContainerLowest,
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builder: (_) {
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return NotificationListener<Notification>(
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onNotification: _onNotification,
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child: AssetDetailBottomSheet(controller: bottomSheetController, initialChildSize: extent),
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);
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},
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);
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sheetCloseController?.closed.then((_) => _handleSheetClose());
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}
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void _handleSheetClose() {
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viewController?.animateMultiple(position: Offset.zero);
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viewController?.updateMultiple(scale: initialScale);
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ref.read(assetViewerProvider.notifier).setBottomSheet(false);
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sheetCloseController = null;
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shouldPopOnDrag = false;
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hasDraggedDown = null;
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}
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void _snapBottomSheet() {
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if (bottomSheetController.size > _kBottomSheetSnapExtent || bottomSheetController.size < 0.4) {
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return;
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}
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isSnapping = true;
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bottomSheetController.animateTo(_kBottomSheetSnapExtent, duration: Durations.short3, curve: Curves.easeOut);
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}
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Widget _placeholderBuilder(BuildContext ctx, ImageChunkEvent? progress, int index) {
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BaseAsset asset = ref.read(timelineServiceProvider).getAsset(index);
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final stackChildren = ref.read(stackChildrenNotifier(asset)).valueOrNull;
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if (stackChildren != null && stackChildren.isNotEmpty) {
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asset = stackChildren.elementAt(ref.read(assetViewerProvider.select((s) => s.stackIndex)));
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}
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return Container(
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width: double.infinity,
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height: double.infinity,
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color: backgroundColor,
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child: Thumbnail(asset: asset, fit: BoxFit.contain, size: Size(ctx.width, ctx.height)),
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);
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}
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void _onScaleStateChanged(PhotoViewScaleState scaleState) {
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if (scaleState != PhotoViewScaleState.initial) {
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ref.read(videoPlayerControlsProvider.notifier).pause();
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}
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}
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void _onLongPress(_, __, ___) {
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ref.read(isPlayingMotionVideoProvider.notifier).playing = true;
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}
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PhotoViewGalleryPageOptions _assetBuilder(BuildContext ctx, int index) {
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scaffoldContext ??= ctx;
|
|
BaseAsset asset = ref.read(timelineServiceProvider).getAsset(index);
|
|
final stackChildren = ref.read(stackChildrenNotifier(asset)).valueOrNull;
|
|
if (stackChildren != null && stackChildren.isNotEmpty) {
|
|
asset = stackChildren.elementAt(ref.read(assetViewerProvider.select((s) => s.stackIndex)));
|
|
}
|
|
|
|
final isPlayingMotionVideo = ref.read(isPlayingMotionVideoProvider);
|
|
if (asset.isImage && !isPlayingMotionVideo) {
|
|
return _imageBuilder(ctx, asset);
|
|
}
|
|
|
|
return _videoBuilder(ctx, asset);
|
|
}
|
|
|
|
PhotoViewGalleryPageOptions _imageBuilder(BuildContext ctx, BaseAsset asset) {
|
|
final size = Size(ctx.width, ctx.height);
|
|
return PhotoViewGalleryPageOptions(
|
|
key: ValueKey(asset.heroTag),
|
|
imageProvider: getFullImageProvider(asset, size: size),
|
|
heroAttributes: PhotoViewHeroAttributes(tag: '${asset.heroTag}_$heroOffset'),
|
|
filterQuality: FilterQuality.high,
|
|
tightMode: true,
|
|
initialScale: PhotoViewComputedScale.contained * 0.999,
|
|
minScale: PhotoViewComputedScale.contained * 0.999,
|
|
disableScaleGestures: showingBottomSheet,
|
|
onDragStart: _onDragStart,
|
|
onDragUpdate: _onDragUpdate,
|
|
onDragEnd: _onDragEnd,
|
|
onTapDown: _onTapDown,
|
|
onLongPressStart: asset.isMotionPhoto ? _onLongPress : null,
|
|
errorBuilder: (_, __, ___) => Container(
|
|
width: ctx.width,
|
|
height: ctx.height,
|
|
color: backgroundColor,
|
|
child: Thumbnail(asset: asset, fit: BoxFit.contain, size: size),
|
|
),
|
|
);
|
|
}
|
|
|
|
GlobalKey _getVideoPlayerKey(String id) {
|
|
videoPlayerKeys.putIfAbsent(id, () => GlobalKey());
|
|
return videoPlayerKeys[id]!;
|
|
}
|
|
|
|
PhotoViewGalleryPageOptions _videoBuilder(BuildContext ctx, BaseAsset asset) {
|
|
return PhotoViewGalleryPageOptions.customChild(
|
|
onDragStart: _onDragStart,
|
|
onDragUpdate: _onDragUpdate,
|
|
onDragEnd: _onDragEnd,
|
|
onTapDown: _onTapDown,
|
|
heroAttributes: PhotoViewHeroAttributes(tag: '${asset.heroTag}_$heroOffset'),
|
|
filterQuality: FilterQuality.high,
|
|
initialScale: PhotoViewComputedScale.contained * 0.99,
|
|
maxScale: 1.0,
|
|
minScale: PhotoViewComputedScale.contained * 0.99,
|
|
basePosition: Alignment.center,
|
|
child: SizedBox(
|
|
width: ctx.width,
|
|
height: ctx.height,
|
|
child: NativeVideoViewer(
|
|
key: _getVideoPlayerKey(asset.heroTag),
|
|
asset: asset,
|
|
image: Image(
|
|
key: ValueKey(asset),
|
|
image: getFullImageProvider(asset, size: Size(ctx.width, ctx.height)),
|
|
fit: BoxFit.contain,
|
|
height: ctx.height,
|
|
width: ctx.width,
|
|
alignment: Alignment.center,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
void _onPop<T>(bool didPop, T? result) {
|
|
ref.read(currentAssetNotifier.notifier).dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
// Rebuild the widget when the asset viewer state changes
|
|
// Using multiple selectors to avoid unnecessary rebuilds for other state changes
|
|
ref.watch(assetViewerProvider.select((s) => s.showingBottomSheet));
|
|
ref.watch(assetViewerProvider.select((s) => s.backgroundOpacity));
|
|
ref.watch(assetViewerProvider.select((s) => s.stackIndex));
|
|
ref.watch(isPlayingMotionVideoProvider);
|
|
|
|
// Listen for casting changes and send initial asset to the cast provider
|
|
ref.listen(castProvider.select((value) => value.isCasting), (_, isCasting) async {
|
|
if (!isCasting) return;
|
|
|
|
final asset = ref.read(currentAssetNotifier);
|
|
if (asset == null) return;
|
|
|
|
WidgetsBinding.instance.addPostFrameCallback((_) {
|
|
_handleCasting(asset);
|
|
});
|
|
});
|
|
|
|
final isInLockedView = ref.watch(inLockedViewProvider);
|
|
|
|
// Currently it is not possible to scroll the asset when the bottom sheet is open all the way.
|
|
// Issue: https://github.com/flutter/flutter/issues/109037
|
|
// TODO: Add a custom scrum builder once the fix lands on stable
|
|
return PopScope(
|
|
onPopInvokedWithResult: _onPop,
|
|
child: Scaffold(
|
|
backgroundColor: backgroundColor,
|
|
appBar: const ViewerTopAppBar(),
|
|
extendBody: true,
|
|
extendBodyBehindAppBar: true,
|
|
body: PhotoViewGallery.builder(
|
|
gaplessPlayback: true,
|
|
loadingBuilder: _placeholderBuilder,
|
|
pageController: pageController,
|
|
scrollPhysics: platform.isIOS
|
|
? const FastScrollPhysics() // Use bouncing physics for iOS
|
|
: const FastClampingScrollPhysics(), // Use heavy physics for Android
|
|
itemCount: totalAssets,
|
|
onPageChanged: _onPageChanged,
|
|
onPageBuild: _onPageBuild,
|
|
scaleStateChangedCallback: _onScaleStateChanged,
|
|
builder: _assetBuilder,
|
|
backgroundDecoration: BoxDecoration(color: backgroundColor),
|
|
enablePanAlways: true,
|
|
),
|
|
bottomNavigationBar: showingBottomSheet
|
|
? const SizedBox.shrink()
|
|
: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
mainAxisAlignment: MainAxisAlignment.end,
|
|
crossAxisAlignment: CrossAxisAlignment.stretch,
|
|
children: [const AssetStackRow(), if (!isInLockedView) const ViewerBottomBar()],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|