Bar

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import 'package:d_chart/d_chart.dart';
import 'package:flutter/material.dart';

class BarChart extends StatelessWidget {
  const BarChart({super.key});

  @override
  Widget build(BuildContext context) {
    List<OrdinalData> ordinalList = [
      OrdinalData(domain: 'Mon', measure: 3),
      OrdinalData(domain: 'Tue', measure: 5),
      OrdinalData(domain: 'Wed', measure: 9),
      OrdinalData(domain: 'Thu', measure: 6.5),
    ];
    return Container(
      color: Colors.purple[100],
      child: AspectRatio(
        aspectRatio: 16 / 9,
        child: DChartBarO(
          allowSliding: false,
          animate: false,
          animationDuration: const Duration(milliseconds: 300),
          barLabelValue: (group, ordinalData, index) {
            String domain = ordinalData.domain;
            String measure = ordinalData.measure.round().toString();
            return measure;
          },
          barLabelDecorator: BarLabelDecorator(
            barLabelPosition: BarLabelPosition.auto,
            labelAnchor: BarLabelAnchor.start,
            labelPadding: 10,
          ),
          configRenderBar: ConfigRenderBar(
            barGroupInnerPaddingPx: 2,
            barGroupingType: BarGroupingType.grouped,
            fillPattern: FillPattern.solid,
            maxBarWidthPx: 60,
            radius: 30,
            stackedBarPaddingPx: 1,
            strokeWidthPx: 0,
          ),
          fillColor: (group, ordinalData, index) {
            return switch (ordinalData.measure) {
              3 => Colors.red,
              9 => Colors.green,
              _ => group.color,
              // _ => Colors.transparent,
            };
          },
          flipVertical: false,
          insideBarLabelStyle: (group, ordinalData, index) {
            return const LabelStyle(
              color: Colors.white,
              fontSize: 16,
            );
          },
          layoutMargin: LayoutMargin(30, 20, 20, 20),
          outsideBarLabelStyle: (group, ordinalData, index) {
            return const LabelStyle(
              color: Colors.black,
              fontSize: 16,
            );
          },
          vertical: true,
          fillPattern: (group, ordinalData, index) {
            if (ordinalData.domain == 'Tue' && group.id == '1') {
              return FillPattern.forwarHatch;
            }
            return FillPattern.solid;
          },
          domainAxis: const DomainAxis(
            // ordinalViewport: OrdinalViewport('Tue', 2),
            gapAxisToLabel: 5,
            labelAnchor: LabelAnchor.centered,
            tickLength: 5,
            labelRotation: 0,
            labelStyle: LabelStyle(
              color: Colors.black,
              fontSize: 14,
            ),
            lineStyle: LineStyle(
              color: Colors.green,
              thickness: 1,
              dashPattern: [],
            ),
            minimumPaddingBetweenLabels: 0,
            showLine: true,
          ),
          measureAxis: MeasureAxis(
            numericViewport: const NumericViewport(0, 12),
            desiredTickCount: 5,
            showLine: true,
            gapAxisToLabel: 5,
            tickLength: 5,
            labelAnchor: LabelAnchor.centered,
            labelFormat: (measure) {
              return '${measure?.toStringAsFixed(0)} K';
            },
            labelStyle: const LabelStyle(
              color: Colors.black,
              fontSize: 14,
            ),
            lineStyle: const LineStyle(
              color: Colors.green,
              thickness: 1,
              dashPattern: [],
            ),
          ),
          groupList: [
            OrdinalGroup(
              id: '1',
              data: ordinalList,
            ),
            OrdinalGroup(
              id: '2',
              data: ordinalList,
            ),
            OrdinalGroup(
              id: '3',
              data: ordinalList,
            ),
          ],
        ),
      ),
    );
  }
}