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feat: pinch-to-zoom gestures for PDF reader & post editing for admins and authors
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Nizz05
2026-09-18 12:05:18 +02:00
parent a228392dc6
commit f10d5ad5ed
8 changed files with 884 additions and 203 deletions
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lib/screens/add_post_screen.dart
+164 -35
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@@ -1,4 +1,5 @@
import 'dart:io';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
@@ -9,11 +10,13 @@ import '../services/storage_service.dart';
class AddPostScreen extends StatefulWidget {
final String collectionName;
final String screenTitle;
final PostItem? postToEdit;
const AddPostScreen({
super.key,
required this.collectionName,
required this.screenTitle,
this.postToEdit,
});
@override
@@ -29,8 +32,25 @@ class _AddPostScreenState extends State<AddPostScreen> {
final StorageService _storageService = StorageService();
File? _selectedImage;
String? _existingImageUrl;
bool _isSaving = false;
bool get isEditing => widget.postToEdit != null;
@override
void initState() {
super.initState();
if (widget.postToEdit != null) {
_titleController.text = widget.postToEdit!.title;
_descriptionController.text = widget.postToEdit!.description;
if (widget.postToEdit!.imageUrls.isNotEmpty) {
_existingImageUrl = widget.postToEdit!.imageUrls.first;
} else if (widget.postToEdit!.imageUrl.isNotEmpty) {
_existingImageUrl = widget.postToEdit!.imageUrl;
}
}
}
@override
void dispose() {
_titleController.dispose();
@@ -100,38 +120,85 @@ class _AddPostScreenState extends State<AddPostScreen> {
});
try {
final currentUserId = FirebaseAuth.instance.currentUser?.uid;
String imageUrl = '';
if (isEditing) {
String imageUrl = _existingImageUrl ?? '';
if (_selectedImage != null) {
imageUrl = await _storageService.uploadFile(
file: _selectedImage!,
collectionName: widget.collectionName,
optimize: true,
if (_selectedImage != null) {
// If a new image was chosen, remove the old one from storage if it existed
if (widget.postToEdit!.imageUrls.isNotEmpty) {
for (final oldUrl in widget.postToEdit!.imageUrls) {
try {
await _storageService.deleteFileByUrl(oldUrl);
} catch (_) {}
}
}
imageUrl = await _storageService.uploadFile(
file: _selectedImage!,
collectionName: widget.collectionName,
optimize: true,
);
} else if (_existingImageUrl == null &&
widget.postToEdit!.imageUrls.isNotEmpty) {
// Existing image was deleted by the user
for (final oldUrl in widget.postToEdit!.imageUrls) {
try {
await _storageService.deleteFileByUrl(oldUrl);
} catch (_) {}
}
}
final updatedPost = widget.postToEdit!.copyWith(
title: _titleController.text.trim(),
description: _descriptionController.text.trim(),
imageUrl: imageUrl,
imageUrls: imageUrl.isNotEmpty ? [imageUrl] : [],
);
await _firestoreService.updatePost(widget.collectionName, updatedPost);
if (!mounted) return;
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('Eintrag erfolgreich aktualisiert!'),
backgroundColor: Colors.green,
),
);
Navigator.pop(context, updatedPost);
} else {
final currentUserId = FirebaseAuth.instance.currentUser?.uid;
String imageUrl = '';
if (_selectedImage != null) {
imageUrl = await _storageService.uploadFile(
file: _selectedImage!,
collectionName: widget.collectionName,
optimize: true,
);
}
final newPost = PostItem(
id: '',
title: _titleController.text.trim(),
description: _descriptionController.text.trim(),
imageUrl: imageUrl,
imageUrls: imageUrl.isNotEmpty ? [imageUrl] : [],
createdDate: DateTime.now(),
authorUid: currentUserId,
);
await _firestoreService.addPost(widget.collectionName, newPost);
if (!mounted) return;
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('Eintrag erfolgreich veröffentlicht!'),
backgroundColor: Colors.green,
),
);
Navigator.pop(context, newPost);
}
final newPost = PostItem(
id: '',
title: _titleController.text.trim(),
description: _descriptionController.text.trim(),
imageUrl: imageUrl,
imageUrls: imageUrl.isNotEmpty ? [imageUrl] : [],
createdDate: DateTime.now(),
authorUid: currentUserId,
);
await _firestoreService.addPost(widget.collectionName, newPost);
if (!mounted) return;
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('Eintrag erfolgreich veröffentlicht!'),
backgroundColor: Colors.green,
),
);
Navigator.pop(context);
} catch (e) {
if (!mounted) return;
ScaffoldMessenger.of(context).showSnackBar(
@@ -153,7 +220,7 @@ class _AddPostScreenState extends State<AddPostScreen> {
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.screenTitle),
title: Text(isEditing ? 'Beitrag bearbeiten' : widget.screenTitle),
),
body: SingleChildScrollView(
padding: EdgeInsets.only(
@@ -218,12 +285,68 @@ class _AddPostScreenState extends State<AddPostScreen> {
backgroundColor: Colors.black54,
child: IconButton(
icon: const Icon(Icons.close, color: Colors.white),
onPressed: () => setState(() => _selectedImage = null),
onPressed: () =>
setState(() => _selectedImage = null),
),
),
),
],
)
else if (_existingImageUrl != null &&
_existingImageUrl!.isNotEmpty)
Stack(
children: [
Container(
height: 180,
width: double.infinity,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
border: Border.all(color: Colors.grey.shade400),
),
clipBehavior: Clip.antiAlias,
child: CachedNetworkImage(
imageUrl: _existingImageUrl!,
fit: BoxFit.cover,
placeholder: (ctx, url) => const Center(
child: CircularProgressIndicator(),
),
errorWidget: (ctx, url, err) => Container(
color: Colors.grey.shade200,
child: const Icon(Icons.broken_image, size: 40),
),
),
),
Positioned(
top: 8,
right: 8,
child: CircleAvatar(
backgroundColor: Colors.black54,
child: IconButton(
icon: const Icon(Icons.close, color: Colors.white),
tooltip: 'Bild entfernen',
onPressed: () =>
setState(() => _existingImageUrl = null),
),
),
),
Positioned(
bottom: 8,
right: 8,
child: ElevatedButton.icon(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.black54,
foregroundColor: Colors.white,
padding: const EdgeInsets.symmetric(
horizontal: 10, vertical: 6),
),
onPressed: _showImageSourceModal,
icon: const Icon(Icons.camera_alt, size: 16),
label: const Text('Ersetzen',
style: TextStyle(fontSize: 12)),
),
),
],
)
else
InkWell(
onTap: _showImageSourceModal,
@@ -238,9 +361,11 @@ class _AddPostScreenState extends State<AddPostScreen> {
child: const Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(Icons.add_photo_alternate, size: 36, color: Colors.grey),
Icon(Icons.add_photo_alternate,
size: 36, color: Colors.grey),
SizedBox(height: 6),
Text('Foto hinzufügen', style: TextStyle(color: Colors.black54)),
Text('Foto hinzufügen',
style: TextStyle(color: Colors.black54)),
],
),
),
@@ -258,9 +383,13 @@ class _AddPostScreenState extends State<AddPostScreen> {
child: CircularProgressIndicator(
strokeWidth: 2, color: Colors.white),
)
: const Icon(Icons.send),
: Icon(isEditing ? Icons.save : Icons.send),
label: Text(
_isSaving ? 'Wird gespeichert...' : 'Veröffentlichen',
_isSaving
? 'Wird gespeichert...'
: (isEditing
? 'Änderungen speichern'
: 'Veröffentlichen'),
style: const TextStyle(fontSize: 16),
),
),