bezier_chart 1.0.5 
bezier_chart: ^1.0.5 copied to clipboard
aeyrium.comA beautiful bezier line chart widget for flutter that is highly interactive and configurable.
import 'package:bezier_chart/bezier_chart.dart';
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget {
_onTap(BuildContext context, Widget widget) {
Navigator.of(context).push(
MaterialPageRoute(
builder: (_) => Scaffold(
appBar: AppBar(),
body: widget,
),
),
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Bezier Chart Sample"),
),
body: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: [
ListTile(
title: Text("Sample 1"),
subtitle: Text("Number Chart"),
onTap: () => _onTap(
context,
sample1(context),
),
),
ListTile(
title: Text("Sample 2"),
subtitle: Text("Number Chart/ multi curves"),
onTap: () => _onTap(
context,
sample2(context),
),
),
ListTile(
title: Text("Sample 3"),
subtitle: Text("Weekly Chart"),
onTap: () => _onTap(
context,
sample3(context),
),
),
ListTile(
title: Text("Sample 4"),
subtitle: Text("Montly Chart"),
onTap: () => _onTap(
context,
sample4(context),
),
),
ListTile(
title: Text("Sample 5"),
subtitle: Text("Yearly Chart"),
onTap: () => _onTap(
context,
sample5(context),
),
),
ListTile(
title: Text("Sample 6"),
subtitle: Text("Main Chart"),
onTap: () => _onTap(
context,
sample6(context),
),
),
],
),
),
);
}
}
//SAMPLE CUSTOM VALUES
Widget sample1(BuildContext context) {
return Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
Colors.black54,
Colors.black87,
Colors.black87,
Colors.black,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Text(
"Bezier Chart - Numbers",
style: TextStyle(
color: Colors.white,
fontSize: 28,
fontWeight: FontWeight.w700,
),
),
Center(
child: Card(
elevation: 12,
child: Container(
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width * 0.9,
child: BezierLineChart(
bezierLineChartScale: BezierLineChartScale.CUSTOM,
xAxisCustomValues: const [0, 5, 10, 15, 20, 25, 30, 35],
footerValueBuilder: (double value) {
return "${intOrDouble(value)}\ndays";
},
series: const [
BezierLine(
label: "m",
data: const [
DataPoint<double>(value: 10, xAxis: 0),
DataPoint<double>(value: 130, xAxis: 5),
DataPoint<double>(value: 50, xAxis: 10),
DataPoint<double>(value: 150, xAxis: 15),
DataPoint<double>(value: 75, xAxis: 20),
DataPoint<double>(value: 0, xAxis: 25),
DataPoint<double>(value: 5, xAxis: 30),
DataPoint<double>(value: 45, xAxis: 35),
],
),
],
config: BezierLineChartConfig(
footerHeight: 40,
verticalIndicatorStrokeWidth: 3.0,
verticalIndicatorColor: Colors.black26,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
backgroundGradient: LinearGradient(
colors: [
Colors.red[300],
Colors.red[400],
Colors.red[400],
Colors.red[500],
Colors.red,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
snap: false,
),
),
),
),
),
],
),
);
}
Widget sample2(BuildContext context) {
return Container(
color: Colors.black87,
child: Center(
child: Card(
elevation: 20,
margin: EdgeInsets.all(8.0),
child: Container(
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width,
child: BezierLineChart(
bezierLineChartScale: BezierLineChartScale.CUSTOM,
xAxisCustomValues: const [0, 3, 10, 15, 20, 25, 30, 35],
footerValueBuilder: (double value) {
return "${value.toInt()}\nHrs";
},
series: const [
BezierLine(
label: "Custom 1",
lineStrokeWidth: 4.0,
data: const [
DataPoint<double>(value: 10, xAxis: 0),
DataPoint<double>(value: 130, xAxis: 5),
DataPoint<double>(value: 50, xAxis: 10),
DataPoint<double>(value: 150, xAxis: 15),
DataPoint<double>(value: 75, xAxis: 20),
DataPoint<double>(value: 0, xAxis: 25),
DataPoint<double>(value: 5, xAxis: 30),
DataPoint<double>(value: 45, xAxis: 35),
],
),
BezierLine(
lineColor: Colors.blue,
lineStrokeWidth: 4.0,
label: "Custom 2",
data: const [
DataPoint<double>(value: 5, xAxis: 0),
DataPoint<double>(value: 50, xAxis: 5),
DataPoint<double>(value: 30, xAxis: 10),
DataPoint<double>(value: 30, xAxis: 15),
DataPoint<double>(value: 50, xAxis: 20),
DataPoint<double>(value: 40, xAxis: 25),
DataPoint<double>(value: 10, xAxis: 30),
DataPoint<double>(value: 30, xAxis: 35),
],
),
BezierLine(
lineColor: Colors.red,
lineStrokeWidth: 4.0,
label: "Custom 3",
data: const [
DataPoint<double>(value: 5, xAxis: 0),
DataPoint<double>(value: 10, xAxis: 5),
DataPoint<double>(value: 35, xAxis: 10),
DataPoint<double>(value: 40, xAxis: 15),
DataPoint<double>(value: 40, xAxis: 20),
DataPoint<double>(value: 40, xAxis: 25),
DataPoint<double>(value: 9, xAxis: 30),
DataPoint<double>(value: 11, xAxis: 35),
],
),
],
config: BezierLineChartConfig(
verticalIndicatorStrokeWidth: 2.0,
verticalIndicatorColor: Colors.black12,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
contentWidth: MediaQuery.of(context).size.width * 1.5,
footerHeight: 30.0,
backgroundGradient: LinearGradient(
colors: [
Colors.purpleAccent[400],
Colors.purpleAccent[400],
Colors.purpleAccent[700],
Colors.purpleAccent[700],
Colors.purpleAccent,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
),
),
),
),
),
);
}
//SAMPLE DATE - WEEKLY
Widget sample3(BuildContext context) {
final fromDate = DateTime(2019, 05, 22);
final toDate = DateTime.now();
final date1 = DateTime.now().subtract(Duration(days: 2));
final date2 = DateTime.now().subtract(Duration(days: 3));
return Center(
child: Container(
color: Colors.red,
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width,
child: BezierLineChart(
fromDate: fromDate,
bezierLineChartScale: BezierLineChartScale.WEEKLY,
toDate: toDate,
selectedDate: toDate,
series: [
BezierLine(
label: "Duty",
onMissingValue: (dateTime) {
if (dateTime.day.isEven) {
return 10.0;
}
return 5.0;
},
data: [
DataPoint<DateTime>(value: 10, xAxis: date1),
DataPoint<DateTime>(value: 50, xAxis: date2),
],
),
],
config: BezierLineChartConfig(
verticalIndicatorStrokeWidth: 3.0,
verticalIndicatorColor: Colors.black26,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
backgroundColor: Colors.red,
footerHeight: 30.0,
),
),
),
);
}
//SAMPLE DATE - MONTHLY
Widget sample4(BuildContext context) {
final fromDate = DateTime(2018, 11, 22);
final toDate = DateTime.now();
final date1 = DateTime.now().subtract(Duration(days: 2));
final date2 = DateTime.now().subtract(Duration(days: 3));
final date3 = DateTime.now().subtract(Duration(days: 35));
final date4 = DateTime.now().subtract(Duration(days: 36));
final date5 = DateTime.now().subtract(Duration(days: 65));
final date6 = DateTime.now().subtract(Duration(days: 64));
return Center(
child: Container(
color: Colors.red,
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width,
child: BezierLineChart(
bezierLineChartScale: BezierLineChartScale.MONTHLY,
fromDate: fromDate,
toDate: toDate,
selectedDate: toDate,
series: [
BezierLine(
label: "Duty",
onMissingValue: (dateTime) {
if (dateTime.month.isEven) {
return 10.0;
}
return 5.0;
},
data: [
DataPoint<DateTime>(value: 10, xAxis: date1),
DataPoint<DateTime>(value: 50, xAxis: date2),
DataPoint<DateTime>(value: 20, xAxis: date3),
DataPoint<DateTime>(value: 80, xAxis: date4),
DataPoint<DateTime>(value: 14, xAxis: date5),
DataPoint<DateTime>(value: 30, xAxis: date6),
],
),
],
config: BezierLineChartConfig(
verticalIndicatorStrokeWidth: 3.0,
verticalIndicatorColor: Colors.black26,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
backgroundColor: Colors.red,
footerHeight: 30.0,
),
),
),
);
}
//SAMPLE DATE - YEARLY
Widget sample5(BuildContext context) {
final fromDate = DateTime(2012, 11, 22);
final toDate = DateTime.now();
final date1 = DateTime.now().subtract(Duration(days: 2));
final date2 = DateTime.now().subtract(Duration(days: 3));
final date3 = DateTime.now().subtract(Duration(days: 300));
final date4 = DateTime.now().subtract(Duration(days: 320));
final date5 = DateTime.now().subtract(Duration(days: 650));
final date6 = DateTime.now().subtract(Duration(days: 652));
return Center(
child: Container(
color: Colors.red,
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width,
child: BezierLineChart(
bezierLineChartScale: BezierLineChartScale.YEARLY,
fromDate: fromDate,
toDate: toDate,
selectedDate: toDate,
series: [
BezierLine(
label: "Duty",
onMissingValue: (dateTime) {
if (dateTime.year.isEven) {
return 20.0;
}
return 5.0;
},
data: [
DataPoint<DateTime>(value: 10, xAxis: date1),
DataPoint<DateTime>(value: 50, xAxis: date2),
DataPoint<DateTime>(value: 100, xAxis: date3),
DataPoint<DateTime>(value: 100, xAxis: date4),
DataPoint<DateTime>(value: 40, xAxis: date5),
DataPoint<DateTime>(value: 47, xAxis: date6),
],
),
BezierLine(
label: "Flight",
lineColor: Colors.black26,
onMissingValue: (dateTime) {
if (dateTime.month.isEven) {
return 10.0;
}
return 3.0;
},
data: [
DataPoint<DateTime>(value: 20, xAxis: date1),
DataPoint<DateTime>(value: 30, xAxis: date2),
DataPoint<DateTime>(value: 150, xAxis: date3),
DataPoint<DateTime>(value: 80, xAxis: date4),
DataPoint<DateTime>(value: 45, xAxis: date5),
DataPoint<DateTime>(value: 45, xAxis: date6),
],
),
],
config: BezierLineChartConfig(
verticalIndicatorStrokeWidth: 3.0,
verticalIndicatorColor: Colors.black26,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
backgroundGradient: LinearGradient(
colors: [
Colors.red[300],
Colors.red[400],
Colors.red[400],
Colors.red[500],
Colors.red,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
footerHeight: 30.0,
),
),
),
);
}
//MAIN SAMPLE
Widget sample6(BuildContext context) {
return Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [
Colors.black54,
Colors.black87,
Colors.black87,
],
),
),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"Bezier Chart",
style: TextStyle(
color: Colors.white,
fontSize: 30,
fontWeight: FontWeight.w500,
),
),
_buildChart(
BezierLineChartScale.MONTHLY,
context,
LinearGradient(
colors: [
Colors.red[300],
Colors.red[400],
Colors.red[400],
Colors.red[500],
Colors.red,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
),
_buildChart(
BezierLineChartScale.YEARLY,
context,
LinearGradient(
colors: [
Colors.purple[300],
Colors.purple[400],
Colors.purple[400],
Colors.purple[500],
Colors.purple,
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
))
],
),
);
}
_buildChart(
BezierLineChartScale scale, BuildContext context, LinearGradient gradient) {
final fromDate = DateTime(2012, 11, 22);
final toDate = DateTime.now();
final date1 = DateTime.now().subtract(Duration(days: 2));
final date2 = DateTime.now().subtract(Duration(days: 3));
final date3 = DateTime.now().subtract(Duration(days: 300));
final date4 = DateTime.now().subtract(Duration(days: 320));
final date5 = DateTime.now().subtract(Duration(days: 650));
final date6 = DateTime.now().subtract(Duration(days: 652));
return Center(
child: Card(
elevation: 10,
margin: EdgeInsets.all(25.0),
child: Container(
color: Colors.red,
height: MediaQuery.of(context).size.height / 3,
width: MediaQuery.of(context).size.width,
child: BezierLineChart(
bezierLineChartScale: scale,
fromDate: fromDate,
toDate: toDate,
selectedDate: toDate,
series: [
BezierLine(
label: "Duty",
onMissingValue: (dateTime) {
if (dateTime.year.isEven) {
return 20.0;
}
return 5.0;
},
data: [
DataPoint<DateTime>(value: 10, xAxis: date1),
DataPoint<DateTime>(value: 50, xAxis: date2),
DataPoint<DateTime>(value: 100, xAxis: date3),
DataPoint<DateTime>(value: 100, xAxis: date4),
DataPoint<DateTime>(value: 40, xAxis: date5),
DataPoint<DateTime>(value: 47, xAxis: date6),
],
),
BezierLine(
label: "Flight",
lineColor: Colors.black26,
onMissingValue: (dateTime) {
if (dateTime.month.isEven) {
return 10.0;
}
return 3.0;
},
data: [
DataPoint<DateTime>(value: 20, xAxis: date1),
DataPoint<DateTime>(value: 30, xAxis: date2),
DataPoint<DateTime>(value: 150, xAxis: date3),
DataPoint<DateTime>(value: 80, xAxis: date4),
DataPoint<DateTime>(value: 45, xAxis: date5),
DataPoint<DateTime>(value: 45, xAxis: date6),
],
),
],
config: BezierLineChartConfig(
verticalIndicatorStrokeWidth: 3.0,
verticalIndicatorColor: Colors.black26,
showVerticalIndicator: true,
verticalIndicatorFixedPosition: false,
backgroundGradient: gradient,
footerHeight: 35.0,
),
),
),
),
);
}Metadata
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Metadata
A beautiful bezier line chart widget for flutter that is highly interactive and configurable.
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License
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