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feat: Add aboveChartBoxArea to TooltipDirection for BarTouchTooltipData #2098

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feat: Add aboveChartBoxArea to TooltipDirection for BarTouchTooltipData #2098

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151 changes: 151 additions & 0 deletions example/lib/presentation/samples/bar/bar_chart_sample9.dart
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Original file line number Diff line number Diff line change
@@ -0,0 +1,151 @@
import 'package:fl_chart/fl_chart.dart';
import 'package:fl_chart_app/presentation/resources/app_resources.dart';
import 'package:flutter/material.dart';

/// This sample demonstrates the [TooltipDirection.aboveChartBoxArea] feature,
/// which always draws the tooltip above the entire chart box area,
/// regardless of the bar rod's position or value.
class BarChartSample9 extends StatelessWidget {
const BarChartSample9({super.key});

@override
Widget build(BuildContext context) {
return AspectRatio(
aspectRatio: 1,
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'Tooltip above chart box area',
style: TextStyle(
color: AppColors.contentColorWhite,
fontSize: 18,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 16),
Expanded(
child: BarChart(
BarChartData(
maxY: 20,
minY: 0,
barTouchData: BarTouchData(
enabled: true,
touchTooltipData: BarTouchTooltipData(
direction: TooltipDirection.aboveChartBoxArea,
getTooltipColor: (group) => AppColors.contentColorCyan,
getTooltipItem: (group, groupIndex, rod, rodIndex) {
return BarTooltipItem(
rod.toY.toStringAsFixed(1),
const TextStyle(
color: AppColors.contentColorBlack,
fontWeight: FontWeight.bold,
),
);
},
),
),
titlesData: FlTitlesData(
show: true,
bottomTitles: AxisTitles(
sideTitles: SideTitles(
showTitles: true,
getTitlesWidget: (value, meta) {
const days = ['M', 'T', 'W', 'T', 'F', 'S', 'S'];
return Text(
days[value.toInt() % days.length],
style: const TextStyle(
color: AppColors.contentColorWhite,
fontWeight: FontWeight.bold,
),
);
},
),
),
leftTitles: const AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
topTitles: AxisTitles(
sideTitles: SideTitles(
showTitles: true,
reservedSize: 40,
getTitlesWidget: (value, meta) =>
const SizedBox.shrink(),
),
),
rightTitles: const AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
),
borderData: FlBorderData(show: false),
gridData: const FlGridData(show: false),
barGroups: [
BarChartGroupData(
x: 0,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 18, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 1,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 5, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 2,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 14, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 3,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 9, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 4,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 19, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 5,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 3, color: AppColors.contentColorCyan),
],
),
BarChartGroupData(
x: 6,
showingTooltipIndicators: [0],
barRods: [
BarChartRodData(
toY: 12, color: AppColors.contentColorCyan),
],
),
],
),
),
),
],
),
),
);
}
}
2 changes: 2 additions & 0 deletions example/lib/presentation/samples/chart_samples.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import 'bar/bar_chart_sample5.dart';
import 'bar/bar_chart_sample6.dart';
import 'bar/bar_chart_sample7.dart';
import 'bar/bar_chart_sample8.dart';
import 'bar/bar_chart_sample9.dart';
import 'chart_sample.dart';
import 'gauge/gauge_chart_sample2.dart';
import 'line/line_chart_sample1.dart';
Expand Down Expand Up @@ -61,6 +62,7 @@ class ChartSamples {
BarChartSample(6, (context) => const BarChartSample6()),
BarChartSample(7, (context) => BarChartSample7()),
BarChartSample(8, (context) => BarChartSample8()),
BarChartSample(9, (context) => const BarChartSample9()),
],
ChartType.pie: [
PieChartSample(1, (context) => const PieChartSample1()),
Expand Down
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