Initial commit: imajViewer Flutter Linux image viewer

lib/screens/viewer_screen.dart

@@ -0,0 +1,165 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'package:window_manager/window_manager.dart';
+import 'package:desktop_drop/desktop_drop.dart';
+import '../services/image_manager.dart';
+import '../services/file_handler.dart';
+import '../widgets/custom_title_bar.dart';
+import '../widgets/image_canvas.dart';
+import '../widgets/window_resize_zones.dart';
+import '../shortcuts/app_shortcuts.dart';
+import '../services/window_persistence.dart';
+
+class ViewerScreen extends StatefulWidget {
+  final List<String> initialFiles;
+  const ViewerScreen({super.key, this.initialFiles = const []});
+  @override
+  State<ViewerScreen> createState() => _ViewerScreenState();
+}
+
+class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
+  bool _hasImages = false;
+  bool _isDragging = false;
+  Timer? _saveDebounce;
+  Timer? _pollTimer;
+  Rect _lastBounds = Rect.zero;
+
+  @override
+  void initState() {
+    super.initState();
+    windowManager.addListener(this);
+    ImageManager.instance.addListener(_onImageManagerChanged);
+
+    if (widget.initialFiles.isNotEmpty) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        FileHandler.loadImagesFromPaths(widget.initialFiles);
+      });
+    }
+
+    // İlk kayıt + periyodik polling başlat
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      await Future.delayed(const Duration(milliseconds: 200));
+      await _doSave();
+      _startPolling();
+    });
+  }
+
+  void _startPolling() {
+    _pollTimer?.cancel();
+    _pollTimer = Timer.periodic(const Duration(seconds: 2), (_) async {
+      try {
+        final bounds = await windowManager.getBounds();
+        if (bounds != _lastBounds) {
+          _lastBounds = bounds;
+          WindowPersistence.saveSync(
+            position: bounds.topLeft,
+            size: bounds.size,
+          );
+        }
+      } catch (_) {}
+    });
+  }
+
+  @override
+  void dispose() {
+    windowManager.removeListener(this);
+    ImageManager.instance.removeListener(_onImageManagerChanged);
+    _saveDebounce?.cancel();
+    _pollTimer?.cancel();
+    super.dispose();
+  }
+
+  /// Universal event handler
+  @override
+  void onWindowEvent(String eventName) {
+    switch (eventName) {
+      case 'close':
+        _doSave();
+        break;
+      case 'resize':
+      case 'move':
+        _saveDebounce?.cancel();
+        _saveDebounce = Timer(const Duration(milliseconds: 300), () {
+          _doSave();
+        });
+        break;
+    }
+  }
+
+  void _onImageManagerChanged() {
+    setState(() => _hasImages = ImageManager.instance.images.isNotEmpty);
+  }
+
+  Future<void> _doSave() async {
+    try {
+      final pos = await windowManager.getPosition();
+      final size = await windowManager.getSize();
+      _lastBounds = Rect.fromLTWH(pos.dx, pos.dy, size.width, size.height);
+      WindowPersistence.saveSync(position: pos, size: size);
+    } catch (_) {
+      // Silently ignore save errors
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    ImageManager.instance.buildContext = context;
+    return AppShortcuts(
+      child: Scaffold(
+        backgroundColor: Colors.transparent,
+        body: WindowResizeZones(
+          child: DropTarget(
+            onDragEntered: (_) => setState(() => _isDragging = true),
+            onDragExited: (_) => setState(() => _isDragging = false),
+            onDragDone: (details) {
+              setState(() => _isDragging = false);
+              FileHandler.loadImagesFromPaths(
+                  details.files.map((f) => f.path).toList());
+            },
+            child: Stack(
+              children: [
+                Container(color: const Color(0xFF1a1a1a)),
+                Container(
+                  color: Colors.transparent,
+                  child: _hasImages
+                      ? ImageCanvas(filePath: ImageManager.instance.currentImagePath)
+                      : const Center(
+                          child: Column(
+                            mainAxisSize: MainAxisSize.min,
+                            children: [
+                              Icon(Icons.image, size: 64, color: Colors.white24),
+                              SizedBox(height: 16),
+                              Text('Resimleri buraya sürükleyin\nveya Ctrl+O ile açın',
+                                  textAlign: TextAlign.center,
+                                  style: TextStyle(color: Colors.white38, fontSize: 16)),
+                            ],
+                          ),
+                        ),
+                ),
+                const CustomTitleBar(),
+                if (_isDragging)
+                  Positioned.fill(
+                    child: Container(
+                      color: Colors.blue.withValues(alpha: 0.1),
+                      child: Center(
+                        child: Container(
+                          padding: const EdgeInsets.all(32),
+                          decoration: BoxDecoration(
+                            color: Colors.black87,
+                            borderRadius: BorderRadius.circular(16),
+                            border: Border.all(color: Colors.blueAccent, width: 2),
+                          ),
+                          child: const Text('Bırakın',
+                              style: TextStyle(color: Colors.white, fontSize: 24)),
+                        ),
+                      ),
+                    ),
+                  ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}