122 lines
4.1 KiB
Dart
122 lines
4.1 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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class ImageViewerDialog extends StatefulWidget {
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final List<dynamic> imageSources;
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final int initialIndex;
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const ImageViewerDialog({
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Key? key,
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required this.imageSources,
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required this.initialIndex,
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}) : super(key: key);
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@override
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State<ImageViewerDialog> createState() => _ImageViewerDialogState();
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}
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class _ImageViewerDialogState extends State<ImageViewerDialog> {
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late final PageController _controller;
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late int currentIndex;
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bool isFile(dynamic item) => item is File;
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@override
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void initState() {
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super.initState();
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currentIndex = widget.initialIndex;
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_controller = PageController(initialPage: widget.initialIndex);
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}
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@override
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Widget build(BuildContext context) {
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final double dialogHeight = MediaQuery.of(context).size.height * 0.55;
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return Dialog(
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backgroundColor: Colors.transparent,
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insetPadding: const EdgeInsets.symmetric(horizontal: 24, vertical: 100),
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child: ClipRRect(
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borderRadius: BorderRadius.circular(16),
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child: Container(
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height: dialogHeight,
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decoration: BoxDecoration(
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color: Colors.white,
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.1),
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blurRadius: 12,
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offset: const Offset(0, 4),
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),
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],
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),
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child: Column(
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children: [
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// Top Close Button
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Align(
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alignment: Alignment.topRight,
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child: IconButton(
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icon: const Icon(Icons.close, size: 26),
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onPressed: () => Navigator.of(context).pop(),
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splashRadius: 22,
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tooltip: 'Close',
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),
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),
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// Image Viewer
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Expanded(
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child: PageView.builder(
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controller: _controller,
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itemCount: widget.imageSources.length,
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onPageChanged: (index) {
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setState(() => currentIndex = index);
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},
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itemBuilder: (context, index) {
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final item = widget.imageSources[index];
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 12),
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child: isFile(item)
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? Image.file(item, fit: BoxFit.contain)
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: Image.network(
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item,
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fit: BoxFit.contain,
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loadingBuilder: (context, child, loadingProgress) {
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if (loadingProgress == null) return child;
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return Center(
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child: CircularProgressIndicator(
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value: loadingProgress.expectedTotalBytes != null
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? loadingProgress.cumulativeBytesLoaded /
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(loadingProgress.expectedTotalBytes ?? 1)
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: null,
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),
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);
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},
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errorBuilder: (context, error, stackTrace) =>
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const Center(
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child: Icon(Icons.broken_image, size: 48, color: Colors.grey),
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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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// Index Indicator
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Padding(
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padding: const EdgeInsets.only(top: 8, bottom: 12),
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child: Text(
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'${currentIndex + 1} / ${widget.imageSources.length}',
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style: const TextStyle(
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color: Colors.black87,
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fontSize: 14,
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fontWeight: FontWeight.w500,
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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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