jingyun
96 lines
2.8 KiB
Dart
96 lines
2.8 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart' hide AssetImage;
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import 'package:photo_view/photo_view.dart';
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import 'package:photo_view/photo_view_gallery.dart';
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import '../data/asset_models.dart';
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class AssetImagePreviewPage extends StatefulWidget {
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const AssetImagePreviewPage({
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super.key,
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required this.images,
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required this.initialIndex,
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});
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final List<AssetImage> images;
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final int initialIndex;
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@override
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State<AssetImagePreviewPage> createState() => _AssetImagePreviewPageState();
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}
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class _AssetImagePreviewPageState extends State<AssetImagePreviewPage> {
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late final PageController _pageController;
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late int _currentIndex;
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@override
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void initState() {
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super.initState();
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_currentIndex = widget.initialIndex.clamp(0, widget.images.length - 1);
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_pageController = PageController(initialPage: _currentIndex);
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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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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.black,
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body: SafeArea(
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child: Stack(
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children: [
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PhotoViewGallery.builder(
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pageController: _pageController,
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itemCount: widget.images.length,
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builder: (context, index) {
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final image = widget.images[index];
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return PhotoViewGalleryPageOptions(
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imageProvider: FileImage(File(image.localPath)),
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minScale: PhotoViewComputedScale.contained,
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maxScale: PhotoViewComputedScale.covered * 2.2,
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);
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},
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onPageChanged: (index) => setState(() {
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_currentIndex = index;
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}),
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backgroundDecoration: const BoxDecoration(color: Colors.black),
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),
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Positioned(
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top: 16,
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left: 16,
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child: IconButton(
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onPressed: () => Navigator.of(context).pop(),
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icon: const Icon(Icons.close, color: Colors.white),
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),
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),
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Positioned(
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bottom: 24,
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left: 0,
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right: 0,
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child: Center(
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child: Container(
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padding:
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const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(
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color: Colors.black54,
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borderRadius: BorderRadius.circular(999),
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),
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child: Text(
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'${_currentIndex + 1}/${widget.images.length}',
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style: const TextStyle(color: Colors.white, fontSize: 14),
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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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}
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