117 lines
3.8 KiB
Dart
117 lines
3.8 KiB
Dart
import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:image_picker/image_picker.dart';
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import 'avatar_crop_page.dart';
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import 'file_pick.dart';
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/// Result of the user's choice inside [showAvatarActionsSheet]. The sheet
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/// only collects intent + the (cropped) image bytes — the actual upload /
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/// delete and any loading state are the caller's responsibility, so failures
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/// surface in the screen that owns the avatar, not in a transient sheet.
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sealed class AvatarSheetResult {
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const AvatarSheetResult();
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}
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class AvatarUploadResult extends AvatarSheetResult {
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final Uint8List bytes;
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const AvatarUploadResult(this.bytes);
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}
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class AvatarRemoveResult extends AvatarSheetResult {
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const AvatarRemoveResult();
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}
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/// Bottom sheet with "from gallery", "take photo" and optional "remove"
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/// actions. The picker + 1:1 cropper run with the sheet still mounted, so a
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/// cancelled pick simply returns the user to the sheet. The sheet only pops
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/// once a concrete result exists (or never, if everything was cancelled).
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Future<AvatarSheetResult?> showAvatarActionsSheet(
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BuildContext context, {
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required bool allowRemove,
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}) async {
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AvatarSheetResult? result;
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await showModalBottomSheet<void>(
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context: context,
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isScrollControlled: true,
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showDragHandle: true,
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useSafeArea: true,
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builder: (sheetContext) => SafeArea(
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child: SingleChildScrollView(
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padding: EdgeInsets.only(
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bottom: 16 + MediaQuery.viewInsetsOf(sheetContext).bottom,
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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ListTile(
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leading: const Icon(Icons.photo_library_outlined),
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title: const Text('Aus Galerie wählen'),
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onTap: () async {
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final bytes = await _pickAndCrop(
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sheetContext,
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FilePick.singleGalleryPick,
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);
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if (bytes == null || !sheetContext.mounted) return;
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result = AvatarUploadResult(bytes);
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Navigator.of(sheetContext).pop();
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},
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),
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ListTile(
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leading: const Icon(Icons.photo_camera_outlined),
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title: const Text('Foto aufnehmen'),
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onTap: () async {
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final bytes = await _pickAndCrop(
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sheetContext,
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FilePick.cameraPick,
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);
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if (bytes == null || !sheetContext.mounted) return;
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result = AvatarUploadResult(bytes);
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Navigator.of(sheetContext).pop();
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},
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),
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if (allowRemove) ...[
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const Divider(),
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ListTile(
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leading: Icon(
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Icons.delete_outline,
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color: Theme.of(sheetContext).colorScheme.error,
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),
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title: Text(
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'Profilbild entfernen',
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style: TextStyle(
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color: Theme.of(sheetContext).colorScheme.error,
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),
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),
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onTap: () {
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result = const AvatarRemoveResult();
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Navigator.of(sheetContext).pop();
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},
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),
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],
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],
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),
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),
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),
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);
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return result;
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}
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Future<Uint8List?> _pickAndCrop(
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BuildContext context,
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Future<XFile?> Function() pick,
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) async {
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final picked = await pick();
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if (picked == null) return null;
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final bytes = await picked.readAsBytes();
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if (!context.mounted) return null;
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return Navigator.of(context).push<Uint8List>(
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MaterialPageRoute(
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fullscreenDialog: true,
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builder: (_) => AvatarCropPage(imageBytes: bytes),
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),
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);
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}
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