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/charts/painter/foreground_chart_painter.dart';
       5              : import 'package:material_ui/material_ui.dart';
       6              : 
       7              : abstract class AbstractPainter extends CustomPainter {
       8              :   final double indent;
       9              :   final double xMax;
      10              :   final double xMin;
      11              :   final double yMin;
      12              :   final double yMax;
      13              :   Size? size;
      14              : 
      15              :   final double msDay = 86400000;
      16              : 
      17            1 :   AbstractPainter({
      18              :     required this.indent,
      19              :     this.size,
      20              :     this.xMin = 0.0,
      21              :     this.xMax = 1.0,
      22              :     this.yMin = 0.0,
      23              :     this.yMax = 1.0,
      24              :   });
      25              : 
      26            0 :   @override
      27              :   bool shouldRepaint(CustomPainter oldDelegate) => false;
      28              : 
      29            0 :   Offset getValue(Offset point, Size size, [double dy = 0]) {
      30            0 :     double x = (point.dx - xMin) / (xMax - xMin) * size.width + indent;
      31            0 :     if (x > size.width) {
      32            0 :       x = size.width + 0.01;
      33            0 :     } else if (x < indent) {
      34            0 :       x = indent;
      35              :     }
      36            0 :     double y = (1 - (point.dy + dy - yMin) / (yMax - yMin)) * size.height - indent / ForegroundChartPainter.coercion;
      37            0 :     return Offset(x, y < 0 ? -0.01 : y);
      38              :   }
      39              : }