367 lines
11 KiB
Dart
367 lines
11 KiB
Dart
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:uuid/uuid.dart';
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import '../diagnostics/badnote_log.dart';
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import '../editor/board/board.dart';
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import '../l10n/app_localizations.dart';
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import '../services/database_service.dart';
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import '../theme/app_theme.dart';
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const _kDefaultBoardId = 'main';
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/// Infinite sticky-note board — first-class shell destination (F7).
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class BoardScreen extends ConsumerStatefulWidget {
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const BoardScreen({super.key});
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@override
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ConsumerState<BoardScreen> createState() => _BoardScreenState();
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}
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class _BoardScreenState extends ConsumerState<BoardScreen> {
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Board _board = Board.empty;
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bool _loading = true;
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String? _selectedId;
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final _transform = TransformationController();
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Timer? _saveDebounce;
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@override
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void initState() {
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super.initState();
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_load();
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}
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@override
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void dispose() {
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_saveDebounce?.cancel();
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_transform.dispose();
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super.dispose();
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}
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Future<void> _load() async {
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final db = await DatabaseService.getInstance();
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final board = await db.loadBoard(_kDefaultBoardId);
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if (!mounted) return;
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setState(() {
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_board = board;
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_loading = false;
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});
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BadNoteLog.instance.info(
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LogSubsystem.board,
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'board_loaded',
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fields: {'cards': board.length},
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);
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}
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void _scheduleSave() {
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_saveDebounce?.cancel();
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_saveDebounce = Timer(const Duration(milliseconds: 400), () async {
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final db = await DatabaseService.getInstance();
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await db.saveBoardCards(_kDefaultBoardId, _board.cards);
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BadNoteLog.instance.debug(
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LogSubsystem.board,
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'board_saved',
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fields: {'cards': _board.length},
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);
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});
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}
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void _addCard() {
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final l = AppLocalizations.of(context);
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final id = const Uuid().v4();
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// Place near viewport center in scene coords.
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final matrix = _transform.value;
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final inv = Matrix4.inverted(matrix);
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final center = MatrixUtils.transformPoint(
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inv,
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Offset(
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MediaQuery.sizeOf(context).width / 2,
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MediaQuery.sizeOf(context).height / 2,
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),
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);
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setState(() {
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_board = _board.add(
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BoardCard(
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id: id,
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position: center - const Offset(120, 80),
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size: const Size(240, 160),
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text: l.boardNewCardText,
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),
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);
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_selectedId = id;
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});
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_scheduleSave();
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}
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void _deleteSelected() {
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final id = _selectedId;
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if (id == null) return;
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final l = AppLocalizations.of(context);
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showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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title: Text(l.boardDeleteCardTitle),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(ctx, false),
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child: Text(l.cancel),
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),
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TextButton(
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onPressed: () => Navigator.pop(ctx, true),
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child: Text(l.boardDeleteCard),
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),
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],
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),
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).then((ok) {
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if (ok != true) return;
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setState(() {
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_board = _board.removeById(id);
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_selectedId = null;
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});
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_scheduleSave();
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});
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}
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@override
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Widget build(BuildContext context) {
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final l = AppLocalizations.of(context);
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if (_loading) {
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return const Center(child: CircularProgressIndicator());
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}
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final selected = _selectedId != null ? _board.cardById(_selectedId!) : null;
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final backlinks =
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selected != null ? _board.backlinksOf(selected.id) : <String>{};
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return Scaffold(
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backgroundColor: Theme.of(context).colorScheme.surface,
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appBar: AppBar(
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title: Text(l.boardTitle),
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actions: [
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IconButton(
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tooltip: l.boardAddCard,
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onPressed: _addCard,
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icon: const Icon(Icons.add),
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),
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if (_selectedId != null)
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IconButton(
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tooltip: l.boardDeleteCard,
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onPressed: _deleteSelected,
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icon: const Icon(Icons.delete_outline),
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),
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],
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),
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body: Row(
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children: [
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Expanded(
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child: InteractiveViewer(
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transformationController: _transform,
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constrained: false,
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boundaryMargin: const EdgeInsets.all(2000),
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minScale: 0.25,
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maxScale: 3,
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child: SizedBox(
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width: 4000,
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height: 3000,
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child: CustomPaint(
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painter: _BoardGridPainter(
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color: AppTokens.rule.withValues(alpha: 0.45),
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),
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child: Stack(
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children: [
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for (final card in _board.cards)
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Positioned(
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left: card.position.dx,
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top: card.position.dy,
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width: card.size.width,
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height: card.size.height,
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child: _StickyCard(
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card: card,
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selected: card.id == _selectedId,
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onTap: () => setState(() => _selectedId = card.id),
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onDrag: (delta) {
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setState(() {
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_board = _board.moveCard(
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card.id,
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card.position + delta,
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);
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});
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_scheduleSave();
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},
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onTextChanged: (text) {
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setState(() {
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_board = _board.setText(card.id, text);
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});
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_scheduleSave();
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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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),
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if (selected != null)
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SizedBox(
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width: 260,
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child: Material(
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elevation: 1,
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color: Theme.of(context).colorScheme.surface,
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child: Padding(
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padding: const EdgeInsets.all(AppTokens.chromePad),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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l.boardBacklinks,
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style: Theme.of(context).textTheme.titleSmall,
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),
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const SizedBox(height: 8),
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if (backlinks.isEmpty)
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Text(
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l.boardNoBacklinks,
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style: Theme.of(context).textTheme.bodySmall,
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)
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else
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...backlinks.map((id) {
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final c = _board.cardById(id);
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return ListTile(
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dense: true,
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contentPadding: EdgeInsets.zero,
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title: Text(c?.text.split('\n').first ?? id),
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onTap: () => setState(() => _selectedId = id),
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);
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}),
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const Divider(),
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Text(
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'[[links]]',
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style: Theme.of(context).textTheme.labelMedium,
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),
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const SizedBox(height: 4),
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Text(
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'在便利贴正文里写 [[另一张卡片id]] 建立双链',
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style: Theme.of(context).textTheme.bodySmall?.copyWith(
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color: AppTokens.inkMuted,
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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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),
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floatingActionButton: FloatingActionButton.extended(
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onPressed: _addCard,
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icon: const Icon(Icons.sticky_note_2),
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label: Text(l.boardAddCard),
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),
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);
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}
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}
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class _StickyCard extends StatefulWidget {
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const _StickyCard({
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required this.card,
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required this.selected,
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required this.onTap,
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required this.onDrag,
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required this.onTextChanged,
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});
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final BoardCard card;
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final bool selected;
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final VoidCallback onTap;
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final ValueChanged<Offset> onDrag;
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final ValueChanged<String> onTextChanged;
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@override
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State<_StickyCard> createState() => _StickyCardState();
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}
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class _StickyCardState extends State<_StickyCard> {
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late final TextEditingController _controller =
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TextEditingController(text: widget.card.text);
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@override
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void didUpdateWidget(covariant _StickyCard oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.card.text != widget.card.text &&
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_controller.text != widget.card.text) {
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_controller.text = widget.card.text;
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}
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTap: widget.onTap,
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onPanUpdate: (d) => widget.onDrag(d.delta),
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child: AnimatedContainer(
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duration: const Duration(milliseconds: 120),
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padding: const EdgeInsets.all(10),
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decoration: BoxDecoration(
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color: AppTokens.sticky,
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borderRadius: BorderRadius.circular(AppTokens.radiusSm),
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border: Border.all(
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color: widget.selected ? AppTokens.copper : AppTokens.rule,
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width: widget.selected ? 2 : 1,
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),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.08),
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blurRadius: 8,
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offset: const Offset(0, 3),
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),
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],
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),
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child: TextField(
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controller: _controller,
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maxLines: null,
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style: Theme.of(context).textTheme.bodyMedium?.copyWith(
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color: AppTokens.ink,
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),
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decoration: const InputDecoration(
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border: InputBorder.none,
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isDense: true,
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contentPadding: EdgeInsets.zero,
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),
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onChanged: widget.onTextChanged,
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),
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),
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);
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}
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}
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class _BoardGridPainter extends CustomPainter {
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_BoardGridPainter({required this.color});
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final Color color;
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@override
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void paint(Canvas canvas, Size size) {
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final paint = Paint()
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..color = color
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..strokeWidth = 1;
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const step = 48.0;
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for (double x = 0; x < size.width; x += step) {
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canvas.drawLine(Offset(x, 0), Offset(x, size.height), paint);
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}
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for (double y = 0; y < size.height; y += step) {
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canvas.drawLine(Offset(0, y), Offset(size.width, y), paint);
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}
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}
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@override
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bool shouldRepaint(covariant _BoardGridPainter oldDelegate) =>
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oldDelegate.color != color;
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}
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