329 lines
12 KiB
Dart
329 lines
12 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:window_manager/window_manager.dart';
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import 'package:desktop_drop/desktop_drop.dart';
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import 'package:pdf/pdf.dart';
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import 'package:pdf/widgets.dart' as pw;
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import 'package:printing/printing.dart';
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import '../services/image_manager.dart';
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import '../services/file_handler.dart';
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import '../widgets/custom_title_bar.dart';
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import '../widgets/image_canvas.dart';
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import '../widgets/window_resize_zones.dart';
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import '../shortcuts/app_shortcuts.dart';
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import '../services/window_persistence.dart';
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import '../l10n/app_localizations.dart';
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class ViewerScreen extends StatefulWidget {
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final List<String> initialFiles;
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const ViewerScreen({super.key, this.initialFiles = const []});
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@override
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State<ViewerScreen> createState() => _ViewerScreenState();
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}
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class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
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bool _hasImages = false;
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bool _isDragging = false;
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bool _controlsVisible = false;
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Timer? _saveDebounce;
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Rect _lastBounds = Rect.zero;
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@override
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void initState() {
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super.initState();
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windowManager.addListener(this);
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ImageManager.instance.addListener(_onImageManagerChanged);
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if (widget.initialFiles.isNotEmpty) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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FileHandler.loadImagesFromPaths(widget.initialFiles);
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});
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}
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}
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@override
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void dispose() {
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windowManager.removeListener(this);
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ImageManager.instance.removeListener(_onImageManagerChanged);
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_saveDebounce?.cancel();
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super.dispose();
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}
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/// Universal event handler
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@override
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void onWindowEvent(String eventName) {
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switch (eventName) {
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case 'close':
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// Senkron kayıt — async çağrı kapanışta tamamlanmayabilir
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if (_lastBounds != Rect.zero) {
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WindowPersistence.saveSync(
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position: _lastBounds.topLeft,
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size: _lastBounds.size,
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);
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}
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break;
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case 'resize':
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case 'move':
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// Son bilinen konumu hemen güncelle (kapanış senkron kaydı için)
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windowManager.getBounds().then((b) => _lastBounds = b).catchError((_) => _lastBounds);
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_saveDebounce?.cancel();
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_saveDebounce = Timer(const Duration(milliseconds: 300), () {
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_doSave();
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});
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break;
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}
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}
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void _onImageManagerChanged() {
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setState(() => _hasImages = ImageManager.instance.images.isNotEmpty);
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}
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Future<void> _doSave() async {
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try {
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final pos = await windowManager.getPosition();
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final size = await windowManager.getSize();
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_lastBounds = Rect.fromLTWH(pos.dx, pos.dy, size.width, size.height);
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WindowPersistence.saveSync(position: pos, size: size);
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} catch (_) {
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// Silently ignore save errors
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}
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}
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void _showSettings() {
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showDialog(
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context: context,
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builder: (context) => StatefulBuilder(
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builder: (context, setDialogState) => AlertDialog(
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backgroundColor: const Color(0xFF2a2a2a),
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title: Text(AppLocalizations.of(context)!.settingsTitle,
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style: const TextStyle(color: Colors.white, fontSize: 18)),
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content: SingleChildScrollView(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(AppLocalizations.of(context)!.sortBy,
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style: const TextStyle(color: Colors.white70, fontSize: 13)),
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RadioListTile<bool>(
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value: false,
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groupValue: ImageManager.instance.sortByName,
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dense: true,
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activeColor: Colors.blueAccent,
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title: Text(AppLocalizations.of(context)!.sortByTime,
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style: const TextStyle(color: Colors.white, fontSize: 14)),
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onChanged: (v) {
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ImageManager.instance.setSortByName(v!);
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setDialogState(() {});
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},
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),
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RadioListTile<bool>(
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value: true,
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groupValue: ImageManager.instance.sortByName,
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dense: true,
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activeColor: Colors.blueAccent,
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title: Text(AppLocalizations.of(context)!.sortByName,
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style: const TextStyle(color: Colors.white, fontSize: 14)),
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onChanged: (v) {
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ImageManager.instance.setSortByName(v!);
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setDialogState(() {});
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},
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),
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const Divider(color: Colors.white24, height: 24),
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const Text('imajViewer', style: TextStyle(color: Colors.white, fontSize: 15)),
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const SizedBox(height: 4),
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Text(
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AppLocalizations.of(context)!.appDescription,
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style: const TextStyle(color: Colors.white70, fontSize: 13, height: 1.5),
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),
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const SizedBox(height: 12),
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Text(AppLocalizations.of(context)!.shortcuts,
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style: const TextStyle(color: Colors.white70, fontSize: 13)),
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const SizedBox(height: 4),
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Text(
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AppLocalizations.of(context)!.shortcutsList,
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style: const TextStyle(color: Colors.white70, fontSize: 13, height: 1.6),
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),
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],
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),
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),
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actions: [
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TextButton.icon(
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onPressed: () {
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Navigator.pop(context);
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_printImage();
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},
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icon: const Icon(Icons.print, color: Colors.white70, size: 18),
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label: Text(AppLocalizations.of(context)!.print,
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style: const TextStyle(color: Colors.white70)),
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),
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: Text(AppLocalizations.of(context)!.close, style: const TextStyle(color: Colors.white70)),
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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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Future<void> _printImage() async {
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final path = ImageManager.instance.currentImagePath;
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if (path.isEmpty) return;
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final bytes = await File(path).readAsBytes();
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final image = pw.MemoryImage(bytes);
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await Printing.layoutPdf(
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onLayout: (format) async {
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final doc = pw.Document();
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doc.addPage(
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pw.Page(
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pageFormat: PdfPageFormat.a4,
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build: (context) => pw.Center(
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child: pw.Image(image, fit: pw.BoxFit.contain),
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),
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),
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);
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return doc.save();
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},
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);
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}
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@override
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Widget build(BuildContext context) {
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return AppShortcuts(
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child: Scaffold(
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backgroundColor: Colors.transparent,
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body: WindowResizeZones(
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child: DropTarget(
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onDragEntered: (_) => setState(() => _isDragging = true),
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onDragExited: (_) => setState(() => _isDragging = false),
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onDragDone: (details) {
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setState(() => _isDragging = false);
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FileHandler.loadImagesFromPaths(
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details.files.map((f) => f.path).toList());
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},
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child: MouseRegion(
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onEnter: (_) => setState(() => _controlsVisible = true),
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onExit: (_) => setState(() => _controlsVisible = false),
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child: Stack(
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children: [
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Positioned(
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top: 0,
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left: 0,
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right: 0,
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bottom: 0,
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child: Container(color: const Color(0xFF1a1a1a)),
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),
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Positioned(
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top: 0,
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left: 0,
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right: 0,
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bottom: 0,
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child: Container(
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color: Colors.transparent,
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child: _hasImages
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? ImageCanvas(
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filePath: ImageManager.instance.currentImagePath,
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)
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: Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const Icon(Icons.image, size: 64, color: Colors.white24),
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const SizedBox(height: 16),
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Text(AppLocalizations.of(context)!.dragDropHint,
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key: const Key('dragDropHint'),
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textAlign: TextAlign.center,
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style: const TextStyle(color: Colors.white38, fontSize: 16)),
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],
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),
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),
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),
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),
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CustomTitleBar(
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onSettings: _showSettings,
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visible: _controlsVisible,
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),
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if (_hasImages && _controlsVisible) ...[
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Positioned(
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left: 8,
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bottom: 8,
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child: _NavButton(
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icon: Icons.chevron_left,
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onTap: () => ImageManager.instance.previousImage(),
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),
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),
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Positioned(
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right: 8,
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bottom: 8,
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child: _NavButton(
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icon: Icons.chevron_right,
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onTap: () => ImageManager.instance.nextImage(),
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),
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),
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],
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if (_isDragging)
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Positioned.fill(
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child: Container(
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color: Colors.blue.withValues(alpha: 0.1),
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child: Center(
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child: Container(
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padding: const EdgeInsets.all(32),
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decoration: BoxDecoration(
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color: Colors.black87,
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borderRadius: BorderRadius.circular(16),
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border: Border.all(color: Colors.blueAccent, width: 2),
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),
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child: Text(AppLocalizations.of(context)!.dropHere,
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style: const TextStyle(color: Colors.white, fontSize: 24)),
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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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);
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}
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}
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class _NavButton extends StatefulWidget {
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final IconData icon;
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final VoidCallback onTap;
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const _NavButton({required this.icon, required this.onTap});
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@override
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State<_NavButton> createState() => _NavButtonState();
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}
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class _NavButtonState extends State<_NavButton> {
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bool _hovered = false;
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTap: widget.onTap,
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child: MouseRegion(
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cursor: SystemMouseCursors.click,
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onEnter: (_) => setState(() => _hovered = true),
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onExit: (_) => setState(() => _hovered = false),
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child: Container(
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width: 36,
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height: 36,
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decoration: BoxDecoration(
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color: _hovered
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? Colors.red.withValues(alpha: 0.8)
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: Colors.black.withValues(alpha: 0.35),
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shape: BoxShape.circle,
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),
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child: Icon(widget.icon, color: Colors.white, size: 22),
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),
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),
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);
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}
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}
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