373 lines
13 KiB
Dart
373 lines
13 KiB
Dart
import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import '../../domain/schedule_engine.dart';
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import '../../domain/app_settings.dart';
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import '../../app/app_theme.dart';
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import 'course_details.dart';
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class WeekGrid extends StatelessWidget {
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const WeekGrid({
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super.key,
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required this.events,
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required this.monday,
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required this.today,
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required this.settings,
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this.periodCount = 11,
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}) : assert(periodCount == 11 || periodCount == 12);
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final int periodCount;
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final List<CourseOccurrence> events;
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final DateTime monday, today;
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final AppSettings settings;
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static const _nameStyle = TextStyle(
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fontSize: 10.5,
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fontWeight: FontWeight.w700,
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height: 1.25,
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);
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static const _metadataStyle = TextStyle(fontSize: 9.5, height: 1.22);
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List<CourseOccurrence> _group(CourseOccurrence event) {
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final values = events
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.where((e) => e.course.weekday == event.course.weekday)
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.toList();
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final connected = <CourseOccurrence>{event};
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var grew = true;
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while (grew) {
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grew = false;
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for (final other in values) {
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if (!connected.contains(other) &&
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connected.any((known) => ScheduleEngine.overlaps(known, other))) {
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connected.add(other);
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grew = true;
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}
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}
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}
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return values.where(connected.contains).toList();
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}
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@override
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Widget build(BuildContext context) => LayoutBuilder(
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builder: (context, constraints) {
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final scaler = MediaQuery.textScalerOf(context);
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final scale = scaler.scale(10) / 10;
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const gutter = 34.0, gap = 16.0;
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final width = (constraints.maxWidth - gutter) / 7;
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final header = 56.0 * scale.clamp(1, 2.5);
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final groups = {for (final e in events) e: _group(e)};
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final defaultStyle = DefaultTextStyle.of(context).style;
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double measure(
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String value,
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TextStyle style,
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double available, {
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int? lines,
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}) {
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final painter = TextPainter(
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text: TextSpan(text: value, style: defaultStyle.merge(style)),
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textDirection: Directionality.of(context),
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textScaler: scaler,
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maxLines: lines,
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ellipsis: lines == null ? null : '…',
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)..layout(maxWidth: available);
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final result = painter.height;
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painter.dispose();
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return result;
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}
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// A single shared lesson height keeps equal-duration cards identical in size.
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// Increase that height for full metadata, never stretch one card independently.
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var rowHeight = 54.0 * settings.courseHeightScale * scale.clamp(1, 2.5);
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for (final e in events) {
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final group = groups[e]!;
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if (group.first != e) continue;
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final available = math.max(1.0, width - 12);
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var entryHeight = 0.0;
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for (final value in group) {
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final required =
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measure(value.course.name, _nameStyle, available, lines: 2) +
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measure(value.course.teacher, _metadataStyle, available) +
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measure(value.course.room, _metadataStyle, available) +
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21;
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final periodHeight = group.length > 1
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? measure(
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'${value.course.startPeriod}–${value.course.endPeriod}节',
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_metadataStyle,
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available,
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) +
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3
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: 0.0;
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entryHeight = math.max(entryHeight, required + periodHeight);
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}
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final first = group.map((v) => v.course.startPeriod).reduce(math.min);
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final last = group.map((v) => v.course.endPeriod).reduce(math.max);
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final warning = group.length > 1
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? measure('冲突列表', _metadataStyle, width - 12) + 8
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: 0.0;
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rowHeight = math.max(
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rowHeight,
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(entryHeight * group.length + warning + 8) / (last - first + 1),
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);
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}
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rowHeight = rowHeight.ceilToDouble();
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double top(int period) =>
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(period - 1) * rowHeight +
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(period > 4 ? gap : 0) +
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(period > 8 ? gap : 0);
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final height = periodCount * rowHeight + 2 * gap;
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return Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SizedBox(
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width: gutter,
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height: header + height,
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child: Stack(
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children: [
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for (final slot in lessonSlots.take(periodCount))
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Positioned(
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top: header + top(slot.period),
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left: 0,
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right: 3,
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height: rowHeight,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(
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'${slot.period}',
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style: const TextStyle(
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fontSize: 11,
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fontWeight: FontWeight.w700,
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),
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),
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const SizedBox(height: 3),
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FittedBox(
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child: Text(
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minuteLabel(slot.startMinute),
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style: TextStyle(
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fontSize: 8,
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color: ink.withValues(alpha: 0.55),
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),
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),
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),
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FittedBox(
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child: Text(
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minuteLabel(slot.endMinute),
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style: TextStyle(
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fontSize: 8,
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color: ink.withValues(alpha: 0.4),
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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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Expanded(
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child: Column(
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children: [
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SizedBox(
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height: header,
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child: Row(
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children: List.generate(7, (i) {
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final date = monday.add(Duration(days: i));
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final active =
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date.year == today.year &&
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date.month == today.month &&
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date.day == today.day;
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return SizedBox(
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width: width,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(
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const [
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'周一',
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'周二',
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'周三',
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'周四',
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'周五',
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'周六',
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'周日',
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][i],
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 10,
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color: active
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? river
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: ink.withValues(alpha: 0.6),
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),
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),
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const SizedBox(height: 3),
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Container(
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padding: const EdgeInsets.symmetric(
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horizontal: 5,
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vertical: 2,
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),
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decoration: BoxDecoration(
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color: active ? river : Colors.transparent,
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borderRadius: BorderRadius.circular(9),
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),
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child: Text(
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'${date.day}',
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style: TextStyle(
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fontSize: 11,
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fontWeight: FontWeight.w700,
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color: active ? Colors.white : ink,
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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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SizedBox(
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height: height,
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child: Stack(
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children: [
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for (var i = 0; i < 7; i++)
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Positioned(
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left: i * width,
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top: 0,
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width: width,
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height: height,
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child: DecoratedBox(
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decoration: BoxDecoration(
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color: i < 5
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? Colors.white.withValues(alpha: 0.45)
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: river.withValues(alpha: 0.025),
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border: Border(
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left: BorderSide(
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color: ink.withValues(alpha: 0.04),
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),
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),
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),
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),
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),
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for (var p = 1; p <= periodCount; p++)
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Positioned(
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left: 0,
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right: 0,
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top: top(p),
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child: Divider(
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height: 1,
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color: ink.withValues(alpha: 0.055),
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),
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),
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for (final e in events)
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if (groups[e]!.first == e)
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_block(context, groups[e]!, width, rowHeight, top),
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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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);
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Widget _block(
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BuildContext context,
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List<CourseOccurrence> group,
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double width,
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double rowHeight,
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double Function(int) top,
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) {
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final first = group.map((e) => e.course.startPeriod).reduce(math.min);
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final last = group.map((e) => e.course.endPeriod).reduce(math.max);
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return Positioned(
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left: (group.first.course.weekday - 1) * width + 2,
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top: top(first) + 4,
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width: width - 4,
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height: (last - first + 1) * rowHeight - 8,
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child: group.length == 1
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? _entry(context, group.first)
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: Container(
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decoration: BoxDecoration(
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color: river.withValues(alpha: 0.06),
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borderRadius: BorderRadius.circular(8),
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border: Border.all(color: river.withValues(alpha: 0.15)),
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),
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// Conflict entries are explicitly a list, with their own lesson ranges.
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// They are not separate time-scaled bars squeezed into narrow lanes.
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child: Column(
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children: [
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const Padding(
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padding: EdgeInsets.symmetric(horizontal: 3, vertical: 3),
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child: Text(
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'冲突列表',
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style: TextStyle(
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fontSize: 9.5,
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height: 1.22,
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color: Color(0xFFB45D54),
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),
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),
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),
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for (final e in group)
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Expanded(child: _entry(context, e, inConflict: true)),
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],
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),
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),
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);
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}
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Widget _entry(
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BuildContext context,
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CourseOccurrence e, {
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bool inConflict = false,
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}) => Semantics(
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label: '${e.course.name}，${e.course.teacher}，${e.course.room}',
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button: true,
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excludeSemantics: true,
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onTap: () => showCourseDetails(context, e),
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child: GestureDetector(
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onTap: () => showCourseDetails(context, e),
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child: Container(
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width: double.infinity,
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padding: const EdgeInsets.symmetric(horizontal: 3, vertical: 6),
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decoration: inConflict
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? null
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: BoxDecoration(
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color: courseColor(e.course.id, settings),
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borderRadius: BorderRadius.circular(8),
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border: Border.all(color: Colors.white.withValues(alpha: 0.8)),
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),
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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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e.course.name,
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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style: _nameStyle,
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),
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if (inConflict) ...[
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const SizedBox(height: 3),
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Text(
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'${e.course.startPeriod}–${e.course.endPeriod}节',
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style: _metadataStyle,
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),
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],
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const SizedBox(height: 4),
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Text(
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e.course.teacher,
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style: _metadataStyle.copyWith(
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color: ink.withValues(alpha: 0.85),
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),
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),
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const SizedBox(height: 3),
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Text(
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e.course.room,
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style: _metadataStyle.copyWith(color: ink.withValues(alpha: 0.7)),
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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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