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feat:更新图表模块

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Cxx0822
2025-07-27 22:28:04 +08:00
parent a2ed0f3d98
commit 34780651a8
7 changed files with 305 additions and 115 deletions
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275
lib/views/stats.dart
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@@ -1,4 +1,5 @@
import 'package:flutter/material.dart';
import 'package:food_hub_app/widgets/stats/card.dart';
import 'package:graphic/graphic.dart';
import 'data.dart';
@@ -14,88 +15,210 @@ class _StatsPage extends State<StatsPage> {
var _smooth = false;
var _stepped = false;
final List<Map<String, dynamic>> chartData = const [
{'x': '1月', 'y': 30},
{'x': '2月', 'y': 45},
{'x': '3月', 'y': 28},
{'x': '4月', 'y': 55},
{'x': '5月', 'y': 40},
{'x': '6月', 'y': 65},
];
// @override
// Widget build(BuildContext context) {
// return SingleChildScrollView(
// child: Center(
// child: Column(
// children: <Widget>[
// Container(
// margin: const EdgeInsets.only(top: 10),
// width: 350,
// height: 300,
// child: Chart(
// data: basicData,
// variables: {
// 'genre': Variable(
// accessor: (Map map) => map['genre'] as String,
// ),
// 'sold': Variable(accessor: (Map map) => map['sold'] as num),
// },
// marks: [
// IntervalMark(
// label: LabelEncode(
// encoder: (tuple) => Label(tuple['sold'].toString()),
// ),
// elevation: ElevationEncode(
// value: 0,
// updaters: {
// 'tap': {true: (_) => 5},
// },
// ),
// color: ColorEncode(
// value: Defaults.primaryColor,
// updaters: {
// 'tap': {false: (color) => color.withAlpha(100)},
// },
// ),
// ),
// ],
// axes: [Defaults.horizontalAxis, Defaults.verticalAxis],
// selections: {'tap': PointSelection(dim: Dim.x)},
// tooltip: TooltipGuide(),
// crosshair: CrosshairGuide(),
// ),
// ),
// Container(
// padding: const EdgeInsets.fromLTRB(20, 40, 20, 5),
// child: const Text(
// 'Transposed Bar Chart',
// style: TextStyle(fontSize: 20),
// ),
// ),
// Container(
// margin: const EdgeInsets.only(top: 10),
// width: 350,
// height: 300,
// child: Chart(
// data: basicData,
// variables: {
// 'genre': Variable(
// accessor: (Map map) => map['genre'] as String,
// ),
// 'sold': Variable(accessor: (Map map) => map['sold'] as num),
// },
// transforms: [Proportion(variable: 'sold', as: 'percent')],
// marks: [
// IntervalMark(
// position: Varset('percent') / Varset('genre'),
// label: LabelEncode(
// encoder: (tuple) => Label(tuple['sold'].toString()),
// ),
// color: ColorEncode(
// variable: 'genre',
// values: Defaults.colors10,
// ),
// modifiers: [StackModifier()],
// ),
// ],
// coord: PolarCoord(transposed: true, dimCount: 1, dimFill: 1.05),
// ),
// ),
// ],
// ),
// ),
// );
// }
@override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Center(
child: Column(
children: <Widget>[
Container(
margin: const EdgeInsets.only(top: 10),
width: 350,
height: 300,
child: Chart(
data: basicData,
variables: {
'genre': Variable(
accessor: (Map map) => map['genre'] as String,
),
'sold': Variable(accessor: (Map map) => map['sold'] as num),
},
marks: [
IntervalMark(
label: LabelEncode(
encoder: (tuple) => Label(tuple['sold'].toString()),
return Padding(
padding: EdgeInsets.all(10),
child: Column(
children: [
GridView.count(
shrinkWrap: true,
crossAxisCount: 2,
crossAxisSpacing: 10,
mainAxisSpacing: 10,
childAspectRatio: 3,
children: const [
StatisticCard(
icon: Icons.restaurant_menu,
color: Colors.blue,
title: '菜谱总数',
value: 19,
unit: '个',
),
StatisticCard(
icon: Icons.grid_view_rounded,
color: Colors.green,
title: '菜谱类别',
value: 5,
unit: '种',
),
StatisticCard(
icon: Icons.flag,
color: Colors.orange,
title: '做菜次数',
value: 25,
unit: '个',
),
StatisticCard(
icon: Icons.show_chart,
color: Colors.red,
title: '平均次数',
value: 3.13,
unit: '次/月',
),
],
),
const SizedBox(height: 10),
Expanded(
child: Card(
color: Colors.white,
elevation: 0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
child: Padding(
padding: EdgeInsets.all(10),
child: Column(
children: [
_buildTitleSection(),
Divider(
height: 1,
thickness: 1,
color: Theme.of(context).primaryColor,
indent: 0,
endIndent: 0,
),
elevation: ElevationEncode(
value: 0,
updaters: {
'tap': {true: (_) => 5},
},
),
color: ColorEncode(
value: Defaults.primaryColor,
updaters: {
'tap': {false: (color) => color.withAlpha(100)},
},
),
),
],
axes: [Defaults.horizontalAxis, Defaults.verticalAxis],
selections: {'tap': PointSelection(dim: Dim.x)},
tooltip: TooltipGuide(),
crosshair: CrosshairGuide(),
// 下半部分：图表区
Expanded(child: _buildLineChart()),
],
),
),
),
Container(
padding: const EdgeInsets.fromLTRB(20, 40, 20, 5),
child: const Text(
'Transposed Bar Chart',
style: TextStyle(fontSize: 20),
),
),
Container(
margin: const EdgeInsets.only(top: 10),
width: 350,
height: 300,
child: Chart(
data: basicData,
variables: {
'genre': Variable(
accessor: (Map map) => map['genre'] as String,
),
'sold': Variable(accessor: (Map map) => map['sold'] as num),
},
transforms: [Proportion(variable: 'sold', as: 'percent')],
marks: [
IntervalMark(
position: Varset('percent') / Varset('genre'),
label: LabelEncode(
encoder: (tuple) => Label(tuple['sold'].toString()),
),
color: ColorEncode(
variable: 'genre',
values: Defaults.colors10,
),
modifiers: [StackModifier()],
),
],
coord: PolarCoord(transposed: true, dimCount: 1, dimFill: 1.05),
),
),
],
),
),
],
),
);
}
// 构建标题区域
Widget _buildTitleSection() {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 12),
child: Row(
children: const [
Icon(Icons.show_chart, size: 24),
SizedBox(width: 5),
Text('月度数据趋势统计', style: TextStyle(fontWeight: FontWeight.bold)),
],
),
);
}
Widget _buildLineChart() {
return Chart(
data: chartData,
variables: {
'date': Variable(
accessor: (Map map) => map['x'] as String,
scale: OrdinalScale(
tickCount: 5, // x轴刻度数量
),
),
'points': Variable(
accessor: (Map map) => (map['y'] ?? double.nan) as num,
),
},
marks: [
LineMark(
shape: ShapeEncode(value: BasicLineShape(smooth: false)),
size: SizeEncode(value: 1.5),
),
],
axes: [Defaults.horizontalAxis, Defaults.verticalAxis]
);
}
}