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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,227 @@ | ||
| import 'package:fl_chart/fl_chart.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'dart:math' as math; | ||
|
|
||
| class BarChartSample7 extends StatefulWidget { | ||
| const BarChartSample7({Key? key}) : super(key: key); | ||
|
|
||
| static const shadowColor = Color(0xFFCCCCCC); | ||
| static const dataList = [ | ||
| _BarData(Color(0xFFecb206), 18, 18), | ||
| _BarData(Color(0xFFa8bd1a), 17, 8), | ||
| _BarData(Color(0xFF17987b), 10, 15), | ||
| _BarData(Color(0xFFb87d46), 2.5, 5), | ||
| _BarData(Color(0xFF295ab5), 2, 2.5), | ||
| _BarData(Color(0xFFea0107), 2, 2), | ||
| ]; | ||
|
|
||
| @override | ||
| State<BarChartSample7> createState() => _BarChartSample7State(); | ||
| } | ||
|
|
||
| class _BarChartSample7State extends State<BarChartSample7> { | ||
| BarChartGroupData generateBarGroup( | ||
| int x, | ||
| Color color, | ||
| double value, | ||
| double shadowValue, | ||
| ) { | ||
| return BarChartGroupData( | ||
| x: x, | ||
| barRods: [ | ||
| BarChartRodData( | ||
| toY: value, | ||
| color: color, | ||
| width: 6, | ||
| ), | ||
| BarChartRodData( | ||
| toY: shadowValue, | ||
| color: BarChartSample7.shadowColor, | ||
| width: 6, | ||
| ), | ||
| ], | ||
| showingTooltipIndicators: touchedGroupIndex == x ? [0] : [], | ||
| ); | ||
| } | ||
|
|
||
| int touchedGroupIndex = -1; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Card( | ||
| color: Colors.white, | ||
| elevation: 4, | ||
| child: Padding( | ||
| padding: const EdgeInsets.all(24), | ||
| child: Column( | ||
| mainAxisSize: MainAxisSize.min, | ||
| crossAxisAlignment: CrossAxisAlignment.start, | ||
| children: [ | ||
| AspectRatio( | ||
| aspectRatio: 1.4, | ||
| child: BarChart( | ||
| BarChartData( | ||
| alignment: BarChartAlignment.spaceBetween, | ||
| borderData: FlBorderData( | ||
| show: true, | ||
| border: const Border.symmetric( | ||
| horizontal: BorderSide( | ||
| color: Color(0xFFececec), | ||
| ), | ||
| ), | ||
| ), | ||
| titlesData: FlTitlesData( | ||
| show: true, | ||
| leftTitles: AxisTitles( | ||
| sideTitles: SideTitles( | ||
| showTitles: true, | ||
| reservedSize: 30, | ||
| getTitles: (value, meta) { | ||
| return Text( | ||
| value.toInt().toString(), | ||
| style: const TextStyle( | ||
| color: Color(0xFF606060), | ||
| ), | ||
| textAlign: TextAlign.left, | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| bottomTitles: AxisTitles( | ||
| sideTitles: SideTitles( | ||
| showTitles: true, | ||
| reservedSize: 36, | ||
| getTitles: (value, meta) { | ||
| final index = value.toInt(); | ||
| return Padding( | ||
| padding: const EdgeInsets.only(top: 8.0), | ||
| child: _IconWidget( | ||
| color: BarChartSample7.dataList[index].color, | ||
| isSelected: touchedGroupIndex == index, | ||
| ), | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| rightTitles: AxisTitles(), | ||
| topTitles: AxisTitles(), | ||
| ), | ||
| gridData: FlGridData( | ||
| show: true, | ||
| drawVerticalLine: false, | ||
| getDrawingHorizontalLine: (value) => FlLine( | ||
| color: const Color(0xFFececec), | ||
| dashArray: null, | ||
| strokeWidth: 1, | ||
| ), | ||
| ), | ||
| barGroups: BarChartSample7.dataList.asMap().entries.map((e) { | ||
| final index = e.key; | ||
| final data = e.value; | ||
| return generateBarGroup( | ||
| index, data.color, data.value, data.shadowValue); | ||
| }).toList(), | ||
| maxY: 20, | ||
| barTouchData: BarTouchData( | ||
| enabled: true, | ||
| handleBuiltInTouches: false, | ||
| touchTooltipData: BarTouchTooltipData( | ||
| tooltipBgColor: Colors.transparent, | ||
| tooltipMargin: 0, | ||
| getTooltipItem: ( | ||
| BarChartGroupData group, | ||
| int groupIndex, | ||
| BarChartRodData rod, | ||
| int rodIndex, | ||
| ) { | ||
| return BarTooltipItem( | ||
| rod.toY.toString(), | ||
| TextStyle( | ||
| fontWeight: FontWeight.bold, | ||
| color: rod.color!, | ||
| fontSize: 18, | ||
| shadows: const [ | ||
| Shadow( | ||
| color: Colors.black26, | ||
| blurRadius: 12, | ||
| ) | ||
| ]), | ||
| ); | ||
| }), | ||
| touchCallback: (event, response) { | ||
| if (event.isInterestedForInteractions && | ||
| response != null && | ||
| response.spot != null) { | ||
| setState(() { | ||
| touchedGroupIndex = | ||
| response.spot!.touchedBarGroupIndex; | ||
| }); | ||
| } else { | ||
| setState(() { | ||
| touchedGroupIndex = -1; | ||
| }); | ||
| } | ||
| }, | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| class _BarData { | ||
| final Color color; | ||
| final double value; | ||
| final double shadowValue; | ||
|
|
||
| const _BarData(this.color, this.value, this.shadowValue); | ||
| } | ||
|
|
||
| class _IconWidget extends ImplicitlyAnimatedWidget { | ||
| final Color color; | ||
| final bool isSelected; | ||
|
|
||
| const _IconWidget({ | ||
| required this.color, | ||
| required this.isSelected, | ||
| }) : super(duration: const Duration(milliseconds: 300)); | ||
|
|
||
| @override | ||
| ImplicitlyAnimatedWidgetState<ImplicitlyAnimatedWidget> createState() => | ||
| _IconWidgetState(); | ||
| } | ||
|
|
||
| class _IconWidgetState extends AnimatedWidgetBaseState<_IconWidget> { | ||
| Tween<double>? _rotationTween; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| final rotation = math.pi * 4 * _rotationTween!.evaluate(animation); | ||
| final scale = 1 + _rotationTween!.evaluate(animation) * 0.5; | ||
| return Transform( | ||
| transform: Matrix4.rotationZ(rotation).scaled(scale, scale), | ||
| origin: const Offset(14, 14), | ||
| child: Icon( | ||
| widget.isSelected ? Icons.face_retouching_natural : Icons.face, | ||
| color: widget.color, | ||
| size: 28, | ||
| ), | ||
| ); | ||
| } | ||
|
|
||
| @override | ||
| void forEachTween(TweenVisitor<dynamic> visitor) { | ||
| _rotationTween = visitor( | ||
| _rotationTween, | ||
| widget.isSelected ? 1.0 : 0.0, | ||
| (dynamic value) => Tween<double>( | ||
| begin: value, | ||
| end: widget.isSelected ? 1.0 : 0.0, | ||
| ), | ||
| ) as Tween<double>; | ||
| } | ||
| } |
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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