Files
sepot/app/lib/widgets/avatar.dart
T
Julius Joska 641d70b76e fix: Settings crash, photo preview before sending, incoming-content hardening
Settings crashed with a TypeError: the profile card passed a
SepotFingerprint object where the localized string formatter expects
a String (hidden behind a `dynamic` parameter). Also fixes RangeError
in avatar initials (empty names, double spaces) and switches initials
to grapheme clusters so emoji don't get split.

New photo preview screen: a captured or picked photo no longer sends
immediately — it opens in a preview with freehand drawing (7 colours,
undo), draggable text overlay, 90° rotation and a caption field.
Nothing leaves the device until Send is tapped.

Incoming-content hardening: decryption and content processing are now
separated in the delivery path. Once an envelope is decrypted the
ratchet has advanced, so redelivery can never help — permanently
malformed content (FormatException/TypeError) is acked and dropped
instead of poisoning the queue on every reconnect. Attachment metadata
now validates base64 of the crypto fields up front, and a corrupt
inline thumbnail no longer breaks bubble rendering.

PNG without real transparency (screenshots, edited photos) is now
re-encoded as JPEG — several times smaller on the wire.

Tests: 116 (new widget tests for Settings and the photo preview,
AttachmentMeta wire validation).
2026-07-13 08:15:01 +02:00

91 lines
2.5 KiB
Dart

import 'package:flutter/material.dart';
import 'package:sepot/core/theme/app_theme.dart';
/// Generovaný avatar z iniciál
class SepotAvatar extends StatelessWidget {
final String name;
final double size;
final bool isOnline;
const SepotAvatar({
super.key,
required this.name,
this.size = 48,
this.isOnline = false,
});
@override
Widget build(BuildContext context) {
final initials = _getInitials(name);
final color = _colorFromName(name);
return Stack(
children: [
Container(
width: size,
height: size,
decoration: BoxDecoration(
shape: BoxShape.circle,
// Nokturno: tichý tmavý podklad, barva jen v iniciálách
color: SepotColors.surfaceVariant,
border: Border.all(color: SepotColors.border),
),
child: Center(
child: Text(
initials,
style: TextStyle(
color: color,
fontSize: size * 0.35,
fontWeight: FontWeight.w600,
),
),
),
),
if (isOnline)
Positioned(
right: 0,
bottom: 0,
child: Container(
width: size * 0.28,
height: size * 0.28,
decoration: BoxDecoration(
color: SepotColors.success,
shape: BoxShape.circle,
border: Border.all(
color: SepotColors.background,
width: 2,
),
),
),
),
],
);
}
String _getInitials(String name) {
// Prázdné díly odfiltrovat — dvojitá mezera ve jméně nesmí shodit render.
// Grafémy (characters), ne code units — jméno začínající emoji by se
// jinak rozpůlilo na rozbitý surrogate.
final parts =
name.trim().split(' ').where((p) => p.isNotEmpty).toList();
if (parts.length >= 2) {
return '${parts[0].characters.first}${parts[1].characters.first}'
.toUpperCase();
}
if (parts.isEmpty) return '?';
return parts[0].characters.take(2).toString().toUpperCase();
}
Color _colorFromName(String name) {
// Jen tlumené tóny palety — žádné syté cizí barvy
final colors = [
SepotColors.ember,
SepotColors.mist,
SepotColors.sage,
SepotColors.warning,
SepotColors.textSecondary,
];
return colors[name.hashCode.abs() % colors.length];
}
}