Line data    Source code

       1             : // Copyright 2023 The terCAD team. All rights reserved.
       2             : // Use of this source code is governed by a CC BY-NC-ND 4.0 license that can be found in the LICENSE file.
       3             : 
       4             : import 'package:app_finance/_classes/herald/app_locale.dart';
       5             : import 'package:app_finance/_ext/build_context_ext.dart';
       6             : import 'package:app_finance/charts/interface/chart_data.dart';
       7             : import 'package:app_finance/charts/painter/column_chart_painter.dart';
       8             : import 'package:app_finance/charts/painter/foreground_chart_painter.dart';
       9             : import 'package:app_finance/design/generic/empty_widget.dart';
      10             : import 'package:flutter/material.dart';
      11             : import 'package:intl/intl.dart';
      12             : 
      13             : class ColumnChart extends StatelessWidget {
      14             :   final double width;
      15             :   final double height;
      16             :   final double indent;
      17             :   final String tooltip;
      18             :   final List<ChartData> data;
      19             :   final double yMax;
      20             : 
      21           0 :   const ColumnChart({
      22             :     super.key,
      23             :     required this.data,
      24             :     required this.yMax,
      25             :     required this.width,
      26             :     required this.height,
      27             :     this.indent = 0.0,
      28             :     this.tooltip = '',
      29             :   });
      30             : 
      31           0 :   @override
      32             :   Widget build(BuildContext context) {
      33           0 :     if (data.isEmpty || data.last.data.isEmpty) {
      34             :       return const EmptyWidget();
      35             :     }
      36           0 :     final now = DateTime.now();
      37           0 :     final size = Size(width, height);
      38           0 :     final bgColor = context.colorScheme.onSurface;
      39           0 :     final xMin = DateTime(now.year);
      40           0 :     final xMax = DateTime(now.year + 1);
      41           0 :     final bg = ForegroundChartPainter(
      42             :       size: size,
      43             :       color: bgColor,
      44             :       lineColor: bgColor,
      45           0 :       background: bgColor.withOpacity(0.1),
      46             :       yMin: 0.0,
      47           0 :       yMax: yMax,
      48           0 :       yTpl: NumberFormat.compact(locale: AppLocale.code),
      49             :       xType: DateTime,
      50           0 :       xMin: xMin.millisecondsSinceEpoch.toDouble(),
      51           0 :       xMax: xMax.millisecondsSinceEpoch.toDouble(),
      52           0 :       xTpl: DateFormat.MMM(AppLocale.code),
      53             :     );
      54           0 :     return SizedBox(
      55           0 :       height: size.height,
      56           0 :       width: size.width,
      57           0 :       child: CustomPaint(
      58             :         size: size,
      59           0 :         painter: ColumnChartPainter(
      60           0 :           indent: bg.shift,
      61             :           size: size,
      62           0 :           data: data,
      63           0 :           yMax: yMax,
      64           0 :           xMin: bg.xMin,
      65           0 :           xMax: bg.xMax,
      66             :         ),
      67             :         foregroundPainter: bg,
      68             :         willChange: false,
      69           0 :         child: Padding(
      70           0 :           padding: EdgeInsets.only(top: indent / 4),
      71           0 :           child: Text(tooltip),
      72             :         ),
      73             :       ),
      74             :     );
      75             :   }
      76             : }