118 lines
3.6 KiB
Dart
118 lines
3.6 KiB
Dart
import 'package:fl_chart/fl_chart.dart';
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import 'package:flutter/material.dart';
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class LineChartWidget extends StatelessWidget {
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const LineChartWidget({
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required this.spots,
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this.title,
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this.lineColor,
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this.gradientColors,
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this.minY,
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this.maxY,
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this.showGrid = true,
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this.bottomTitles,
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this.leftTitles,
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super.key,
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});
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final List<FlSpot> spots;
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final String? title;
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final Color? lineColor;
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final List<Color>? gradientColors;
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final double? minY;
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final double? maxY;
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final bool showGrid;
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final Widget Function(double, TitleMeta)? bottomTitles;
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final Widget Function(double, TitleMeta)? leftTitles;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final primaryColor = lineColor ?? theme.colorScheme.primary;
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final colors = gradientColors ??
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[
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primaryColor,
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primaryColor.withValues(alpha: 0.3),
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];
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (title != null)
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Padding(
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padding: const EdgeInsets.only(bottom: 16),
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child: Text(
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title!,
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style: theme.textTheme.titleMedium?.copyWith(
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fontWeight: FontWeight.bold,
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),
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),
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),
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Expanded(
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child: LineChart(
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LineChartData(
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gridData: FlGridData(show: showGrid),
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titlesData: FlTitlesData(
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topTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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rightTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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bottomTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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getTitlesWidget: bottomTitles ??
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(value, meta) => SideTitleWidget(
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meta: meta,
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child: Text(
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value.toInt().toString(),
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style: theme.textTheme.bodySmall,
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),
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),
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),
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),
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leftTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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reservedSize: 40,
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getTitlesWidget: leftTitles ??
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(value, meta) => SideTitleWidget(
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meta: meta,
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child: Text(
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value.toInt().toString(),
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style: theme.textTheme.bodySmall,
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),
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),
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),
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),
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),
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borderData: FlBorderData(show: false),
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minY: minY,
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maxY: maxY,
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lineBarsData: [
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LineChartBarData(
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spots: spots,
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isCurved: true,
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color: primaryColor,
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barWidth: 3,
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isStrokeCapRound: true,
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dotData: const FlDotData(show: false),
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belowBarData: BarAreaData(
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show: true,
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gradient: LinearGradient(
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colors: colors,
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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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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}
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