1b5d105400
Your avatar is your photo, picked from the device by tapping it on Home or from a new Profile photo row in Settings, shrunk to 256 px and kept on the phone (there is no upload endpoint yet). Group members show the photo the server sends in a new `photo` field, everywhere avatars appear. Without a photo, an initial on a neutral disc. Mock mode bundles free Unsplash portraits for the sample people. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KhQh614DMeYoQEH9SoMRUw
40 lines
1.3 KiB
Dart
40 lines
1.3 KiB
Dart
import 'dart:convert';
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import 'dart:typed_data';
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import 'dart:ui' as ui;
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import 'package:file_picker/file_picker.dart';
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/// Picks a photo from the device and returns it as a small PNG data URI,
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/// ready to store as a profile `pic`. Null when nothing was picked or the
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/// file was not an image.
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class PhotoPicker {
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/// Long edge of the stored portrait. Big enough for the largest avatar on
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/// a 3x screen, small enough to keep in local storage.
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static const int _edge = 256;
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static Future<String?> pickPortrait() async {
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final FilePickerResult? result =
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await FilePicker.pickFiles(type: FileType.image, withData: true);
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final Uint8List? bytes = result == null || result.files.isEmpty
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? null
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: result.files.first.bytes;
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if (bytes == null) {
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return null;
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}
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try {
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final ui.Codec codec = await ui.instantiateImageCodec(bytes,
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targetWidth: _edge, targetHeight: null);
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final ui.FrameInfo frame = await codec.getNextFrame();
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final ByteData? png =
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await frame.image.toByteData(format: ui.ImageByteFormat.png);
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if (png == null) {
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return null;
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}
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return "data:image/png;base64,${base64Encode(png.buffer.asUint8List())}";
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} catch (e) {
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return null;
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}
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}
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}
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