vjrj
ec56819fbf
Profiles had only a coloured-initial disc. Now each person can set an avatar — a real photo OR one of our own seed illustrations (so pseudonymity stays the default; no photo required). - ui/avatar.dart: the one-string value scheme carried in the kind:0 'picture' — a 'data:' photo thumbnail, a 'tane:seed:<glyph>' token, or empty. The Nostr ProfileTransport already published 'picture'. - Photos ride inline as a tiny thumbnail (reuses offerThumbnailDataUri, 24 KB cap) — no media server, like offer photos. - avatar_edit.dart: pick/take a photo, choose a seed illustration, or remove; ProfileStore stores it; ProfileScreen shows a big editable avatar and publishes it. - PeerAvatar renders photo / illustration / initial fallback. - ProfileCache gains picture/setPicture; the inbox caches peers' avatars alongside their names. - i18n avatar block (en/es/pt/ast). Tests: value scheme + PeerAvatar render modes, store + cache round-trips. Follow-up: render peers' avatars in chat/market/your-people (thread the cached picture into PeerAvatar at each call site).
86 lines
2.8 KiB
Dart
86 lines
2.8 KiB
Dart
import 'package:flutter/material.dart';
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import '../services/offer_thumbnail.dart' show decodeDataUri;
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import 'avatar.dart';
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import 'seed_glyph.dart';
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/// A small round avatar for a person. When they've set an avatar ([picture] — a
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/// `data:` photo thumbnail or a `tane:seed:<glyph>` illustration) it's shown;
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/// otherwise it falls back to a deterministic disc coloured from their [pubkey],
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/// with the first letter of their [name] (else a person glyph). Same pubkey →
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/// same colour on every device, so a person stays visually recognizable.
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class PeerAvatar extends StatelessWidget {
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const PeerAvatar({
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required this.pubkey,
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this.name,
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this.picture,
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this.radius = 14,
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super.key,
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});
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final String pubkey;
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final String? name;
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/// The person's chosen avatar value; null/empty → the coloured-initial disc.
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final String? picture;
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final double radius;
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@override
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Widget build(BuildContext context) {
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final pic = picture?.trim() ?? '';
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if (pic.startsWith('data:')) {
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final bytes = decodeDataUri(pic);
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if (bytes != null) {
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return CircleAvatar(radius: radius, backgroundImage: MemoryImage(bytes));
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}
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} else if (pic.startsWith(avatarGlyphPrefix)) {
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final glyph = avatarGlyphChar(pic.substring(avatarGlyphPrefix.length));
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if (glyph != null) {
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return CircleAvatar(
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radius: radius,
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backgroundColor: peerAvatarColor(pubkey),
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child: SeedGlyph(glyph, size: radius * 1.15, color: Colors.white),
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);
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}
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}
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final letter = _initial(name);
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return CircleAvatar(
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radius: radius,
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backgroundColor: peerAvatarColor(pubkey),
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child: letter == null
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? Icon(Icons.person_outline, size: radius, color: Colors.white)
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: Text(
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letter,
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style: TextStyle(
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color: Colors.white,
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fontSize: radius,
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fontWeight: FontWeight.w600,
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),
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),
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);
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}
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static String? _initial(String? name) {
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if (name == null) return null;
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final trimmed = name.trim();
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if (trimmed.isEmpty) return null;
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// characters.first handles emoji/combining marks safely.
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return trimmed.characters.first.toUpperCase();
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}
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}
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/// A deterministic, readable avatar colour derived from [pubkey]. Hashes the
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/// key to a hue, then fixes saturation/lightness so white text stays legible on
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/// top. Pure and stable — exposed for testing.
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Color peerAvatarColor(String pubkey) {
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// FNV-1a over the code units — cheap, stable, well-spread across hues.
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var hash = 0x811c9dc5;
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for (final unit in pubkey.codeUnits) {
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hash = (hash ^ unit) * 0x01000193;
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hash &= 0xffffffff;
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}
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final hue = (hash % 360).toDouble();
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return HSLColor.fromAHSL(1, hue, 0.45, 0.42).toColor();
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}
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