mirror of
https://github.com/HChaZZY/PiliPlus.git
synced 2025-12-06 09:13:48 +08:00
589 lines
18 KiB
Dart
589 lines
18 KiB
Dart
import 'dart:io';
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import 'package:PiliPlus/common/widgets/interactiveviewer_gallery/interactive_viewer.dart'
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as custom;
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import 'package:PiliPlus/common/widgets/interactiveviewer_gallery/interactive_viewer_boundary.dart';
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import 'package:PiliPlus/models/common/image_preview_type.dart';
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import 'package:PiliPlus/utils/extension.dart';
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import 'package:PiliPlus/utils/image_util.dart';
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import 'package:PiliPlus/utils/storage_pref.dart';
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import 'package:PiliPlus/utils/utils.dart';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:easy_debounce/easy_throttle.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:get/get.dart';
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import 'package:media_kit/media_kit.dart';
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import 'package:media_kit_video/media_kit_video.dart';
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/// https://github.com/qq326646683/interactiveviewer_gallery
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/// Builds a carousel controlled by a [PageView] for the tweet media sources.
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///
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/// Used for showing a full screen view of the [TweetMedia] sources.
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///
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/// The sources can be panned and zoomed interactively using an
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/// [InteractiveViewer].
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/// An [InteractiveViewerBoundary] is used to detect when the boundary of the
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/// source is hit after zooming in to disable or enable the swiping gesture of
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/// the [PageView].
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///
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typedef IndexedFocusedWidgetBuilder =
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Widget Function(
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BuildContext context,
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int index,
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bool isFocus,
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bool enablePageView,
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);
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typedef IndexedTagStringBuilder = String Function(int index);
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class InteractiveviewerGallery extends StatefulWidget {
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const InteractiveviewerGallery({
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super.key,
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required this.sources,
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required this.initIndex,
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this.itemBuilder,
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this.maxScale = 8,
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this.minScale = 1.0,
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this.onPageChanged,
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this.onDismissed,
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this.setStatusBar = true,
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this.onClose,
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required this.quality,
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});
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final int quality;
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final ValueChanged<bool>? onClose;
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final bool setStatusBar;
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/// The sources to show.
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final List<SourceModel> sources;
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/// The index of the first source in [sources] to show.
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final int initIndex;
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/// The item content
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final IndexedFocusedWidgetBuilder? itemBuilder;
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final double maxScale;
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final double minScale;
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final ValueChanged<int>? onPageChanged;
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final ValueChanged<int>? onDismissed;
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@override
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State<InteractiveviewerGallery> createState() =>
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_InteractiveviewerGalleryState();
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}
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class _InteractiveviewerGalleryState extends State<InteractiveviewerGallery>
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with SingleTickerProviderStateMixin {
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PageController? _pageController;
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custom.TransformationController? _transformationController;
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/// The controller to animate the transformation value of the
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/// [InteractiveViewer] when it should reset.
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late AnimationController _animationController;
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Animation<Matrix4>? _animation;
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/// `true` when an source is zoomed in and not at the at a horizontal boundary
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/// to disable the [PageView].
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bool _enablePageView = true;
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late Offset _doubleTapLocalPosition;
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late final RxInt currentIndex = widget.initIndex.obs;
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late final int _quality = Pref.previewQ;
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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.initIndex);
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_transformationController = custom.TransformationController();
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_animationController = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 300),
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)..addListener(listener);
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if (widget.setStatusBar) {
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setStatusBar();
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}
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var item = widget.sources[currentIndex.value];
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if (item.sourceType == SourceType.livePhoto) {
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_onPlay(item.liveUrl!);
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}
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}
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void listener() {
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_transformationController!.value = _animation?.value ?? Matrix4.identity();
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}
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SystemUiMode? mode;
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Future<void> setStatusBar() async {
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if (Platform.isIOS || Platform.isAndroid) {
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SystemChrome.setEnabledSystemUIMode(
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SystemUiMode.immersiveSticky,
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);
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}
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if (Platform.isAndroid && (await Utils.sdkInt < 29)) {
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mode = SystemUiMode.manual;
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}
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}
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@override
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void dispose() {
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widget.onClose?.call(true);
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_player?.dispose();
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_pageController?.dispose();
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_animationController
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..removeListener(listener)
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..dispose();
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if (widget.setStatusBar) {
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if (Platform.isIOS || Platform.isAndroid) {
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SystemChrome.setEnabledSystemUIMode(
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mode ?? SystemUiMode.edgeToEdge,
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overlays: SystemUiOverlay.values,
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);
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}
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}
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for (var item in widget.sources) {
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if (item.sourceType == SourceType.networkImage) {
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CachedNetworkImageProvider(_getActualUrl(item.url)).evict();
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}
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}
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super.dispose();
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}
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/// When the source gets scaled up, the swipe up / down to dismiss gets
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/// disabled.
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///
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/// When the scale resets, the dismiss and the page view swiping gets enabled.
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void _onScaleChanged(double scale) {
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final bool initialScale = scale <= widget.minScale;
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if (initialScale) {
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if (!_enablePageView) {
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setState(() {
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_enablePageView = true;
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});
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}
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} else {
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if (_enablePageView) {
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setState(() {
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_enablePageView = false;
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});
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}
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}
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}
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/// When the left boundary has been hit after scaling up the source, the page
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/// view swiping gets enabled if it has a page to swipe to.
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void _onLeftBoundaryHit() {
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if (!_enablePageView && _pageController!.page!.floor() > 0) {
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setState(() {
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_enablePageView = true;
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});
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}
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}
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/// When the right boundary has been hit after scaling up the source, the page
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/// view swiping gets enabled if it has a page to swipe to.
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void _onRightBoundaryHit() {
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if (!_enablePageView &&
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_pageController!.page!.floor() < widget.sources.length - 1) {
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setState(() {
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_enablePageView = true;
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});
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}
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}
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/// When the source has been scaled up and no horizontal boundary has been hit,
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/// the page view swiping gets disabled.
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void _onNoBoundaryHit() {
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if (_enablePageView) {
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setState(() {
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_enablePageView = false;
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});
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}
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}
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void _onPlay(String liveUrl) {
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_player ??= Player();
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_videoController ??= VideoController(_player!);
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_player!.open(Media(liveUrl));
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}
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/// When the page view changed its page, the source will animate back into the
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/// original scale if it was scaled up.
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///
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/// Additionally the swipe up / down to dismiss gets enabled.
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void _onPageChanged(int page) {
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_player?.pause();
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currentIndex.value = page;
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var item = widget.sources[page];
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if (item.sourceType == SourceType.livePhoto) {
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_onPlay(item.liveUrl!);
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}
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widget.onPageChanged?.call(page);
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if (_transformationController!.value != Matrix4.identity()) {
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// animate the reset for the transformation of the interactive viewer
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_animation =
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Matrix4Tween(
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begin: _transformationController!.value,
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end: Matrix4.identity(),
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).animate(
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CurveTween(curve: Curves.easeOut).animate(_animationController),
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);
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_animationController.forward(from: 0);
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}
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}
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String _getActualUrl(String url) {
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return _quality != 100
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? ImageUtil.thumbnailUrl(url, _quality)
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: url.http2https;
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}
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void onClose() {
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if (widget.onClose != null) {
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widget.onClose!(false);
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} else {
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Get.back();
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widget.onDismissed?.call(_pageController!.page!.floor());
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}
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}
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Player? _player;
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VideoController? _videoController;
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@override
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Widget build(BuildContext context) {
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return Stack(
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clipBehavior: Clip.none,
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children: [
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InteractiveViewerBoundary(
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controller: _transformationController,
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boundaryWidth: MediaQuery.sizeOf(context).width,
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onScaleChanged: _onScaleChanged,
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onLeftBoundaryHit: _onLeftBoundaryHit,
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onRightBoundaryHit: _onRightBoundaryHit,
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onNoBoundaryHit: _onNoBoundaryHit,
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maxScale: widget.maxScale,
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minScale: widget.minScale,
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onDismissed: onClose,
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onReset: () {
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if (!_enablePageView) {
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setState(() {
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_enablePageView = true;
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});
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}
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},
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child: PageView.builder(
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onPageChanged: _onPageChanged,
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controller: _pageController,
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physics: _enablePageView
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? null
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: const NeverScrollableScrollPhysics(),
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itemCount: widget.sources.length,
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itemBuilder: (BuildContext context, int index) {
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final item = widget.sources[index];
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return GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () => EasyThrottle.throttle(
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'preview',
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const Duration(milliseconds: 555),
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onClose,
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),
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onDoubleTapDown: (TapDownDetails details) {
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_doubleTapLocalPosition = details.localPosition;
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},
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onDoubleTap: () => EasyThrottle.throttle(
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'preview',
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const Duration(milliseconds: 555),
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onDoubleTap,
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),
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onLongPress: item.sourceType == SourceType.fileImage
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? null
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: () => onLongPress(item),
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child: widget.itemBuilder != null
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? widget.itemBuilder!(
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context,
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index,
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index == currentIndex.value,
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_enablePageView,
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)
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: _itemBuilder(index, item),
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);
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},
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),
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),
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Positioned(
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bottom: 0,
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left: 0,
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right: 0,
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child: Container(
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padding:
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MediaQuery.viewPaddingOf(context) +
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const EdgeInsets.fromLTRB(12, 8, 20, 8),
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decoration: _enablePageView
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? 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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colors: [
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Colors.transparent,
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Colors.black.withValues(alpha: 0.3),
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],
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),
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)
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: null,
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child: Stack(
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clipBehavior: Clip.none,
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alignment: Alignment.center,
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children: [
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Align(
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alignment: Alignment.centerLeft,
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child: IconButton(
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icon: const Icon(Icons.close, color: Colors.white),
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onPressed: onClose,
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),
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),
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if (widget.sources.length > 1)
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Align(
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alignment: Alignment.center,
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child: Obx(
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() => Text(
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"${currentIndex.value + 1}/${widget.sources.length}",
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style: const TextStyle(color: Colors.white),
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),
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),
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),
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if (widget.sources[currentIndex.value].sourceType !=
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SourceType.fileImage)
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Align(
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alignment: Alignment.centerRight,
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child: PopupMenuButton(
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itemBuilder: (context) {
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final item = widget.sources[currentIndex.value];
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return [
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PopupMenuItem(
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onTap: () => ImageUtil.onShareImg(item.url),
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child: const Text("分享图片"),
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),
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PopupMenuItem(
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onTap: () => Utils.copyText(item.url),
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child: const Text("复制链接"),
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),
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PopupMenuItem(
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onTap: () => ImageUtil.downloadImg(
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this.context,
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[item.url],
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),
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child: const Text("保存图片"),
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),
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if (widget.sources.length > 1)
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PopupMenuItem(
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onTap: () => ImageUtil.downloadImg(
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this.context,
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widget.sources.map((item) => item.url).toList(),
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),
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child: const Text("保存全部"),
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),
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if (item.sourceType == SourceType.livePhoto)
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PopupMenuItem(
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onTap: () {
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ImageUtil.downloadLivePhoto(
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context: this.context,
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url: item.url,
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liveUrl: item.liveUrl!,
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width: item.width!,
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height: item.height!,
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);
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},
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child: const Text("保存 Live Photo"),
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),
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];
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},
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child: const Icon(Icons.more_horiz, color: Colors.white),
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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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);
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}
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Widget _itemBuilder(int index, SourceModel item) {
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return Center(
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child: Hero(
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tag: item.url,
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child: switch (item.sourceType) {
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SourceType.fileImage => Image(
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filterQuality: FilterQuality.low,
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image: FileImage(File(item.url)),
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),
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SourceType.networkImage => CachedNetworkImage(
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fadeInDuration: Duration.zero,
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fadeOutDuration: Duration.zero,
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imageUrl: _getActualUrl(item.url),
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placeholderFadeInDuration: Duration.zero,
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placeholder: (context, url) {
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return CachedNetworkImage(
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fadeInDuration: Duration.zero,
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fadeOutDuration: Duration.zero,
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imageUrl: ImageUtil.thumbnailUrl(item.url, widget.quality),
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);
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},
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),
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SourceType.livePhoto => Obx(
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() => currentIndex.value == index
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? IgnorePointer(
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child: Video(
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controller: _videoController!,
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fill: Colors.transparent,
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),
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)
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: const SizedBox.shrink(),
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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 onDoubleTap() {
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Matrix4 matrix = _transformationController!.value.clone();
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double currentScale = matrix.row0.x;
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double targetScale = widget.minScale;
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if (currentScale <= widget.minScale) {
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targetScale = widget.maxScale * 0.4;
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}
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double offSetX = targetScale == 1.0
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? 0.0
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: -_doubleTapLocalPosition.dx * (targetScale - 1);
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double offSetY = targetScale == 1.0
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? 0.0
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: -_doubleTapLocalPosition.dy * (targetScale - 1);
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matrix = Matrix4.fromList([
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targetScale,
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matrix.row1.x,
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matrix.row2.x,
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matrix.row3.x,
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matrix.row0.y,
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targetScale,
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matrix.row2.y,
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matrix.row3.y,
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matrix.row0.z,
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matrix.row1.z,
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targetScale,
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matrix.row3.z,
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offSetX,
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offSetY,
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matrix.row2.w,
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matrix.row3.w,
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]);
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_animation =
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Matrix4Tween(
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begin: _transformationController!.value,
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end: matrix,
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).animate(
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CurveTween(curve: Curves.easeOut).animate(_animationController),
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);
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_animationController
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.forward(from: 0)
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.whenComplete(() => _onScaleChanged(targetScale));
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}
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void onLongPress(SourceModel item) {
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showDialog(
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context: context,
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builder: (context) {
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return AlertDialog(
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clipBehavior: Clip.hardEdge,
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contentPadding: const EdgeInsets.symmetric(vertical: 12),
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content: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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ListTile(
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onTap: () {
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Get.back();
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ImageUtil.onShareImg(item.url);
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},
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dense: true,
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title: const Text('分享', style: TextStyle(fontSize: 14)),
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),
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ListTile(
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onTap: () {
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Get.back();
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Utils.copyText(item.url);
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},
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dense: true,
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title: const Text('复制链接', style: TextStyle(fontSize: 14)),
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),
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ListTile(
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onTap: () {
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Get.back();
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ImageUtil.downloadImg(
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this.context,
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[item.url],
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);
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},
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dense: true,
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title: const Text('保存图片', style: TextStyle(fontSize: 14)),
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),
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if (widget.sources.length > 1)
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ListTile(
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onTap: () {
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Get.back();
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ImageUtil.downloadImg(
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this.context,
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widget.sources.map((item) => item.url).toList(),
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);
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},
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dense: true,
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title: const Text('保存全部图片', style: TextStyle(fontSize: 14)),
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),
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if (item.sourceType == SourceType.livePhoto)
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ListTile(
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onTap: () {
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Get.back();
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ImageUtil.downloadLivePhoto(
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context: this.context,
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url: item.url,
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liveUrl: item.liveUrl!,
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width: item.width!,
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|
height: item.height!,
|
|
);
|
|
},
|
|
dense: true,
|
|
title: const Text(
|
|
'保存 Live Photo',
|
|
style: TextStyle(fontSize: 14),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
},
|
|
);
|
|
}
|
|
}
|