391 lines
No EOL
8.6 KiB
C#
391 lines
No EOL
8.6 KiB
C#
/*
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Copyright (c) 2019, Lars Brubaker, John Lewin
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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The views and conclusions contained in the software and documentation are those
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of the authors and should not be interpreted as representing official policies,
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either expressed or implied, of the FreeBSD Project.
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*/
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using System.Collections.Generic;
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using org.mariuszgromada.math.mxparser;
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using Newtonsoft.Json;
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using System.Linq;
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using System;
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using g3;
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namespace MatterHackers.MatterControl.DesignTools
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{
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public class SheetData
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{
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private object locker = new object();
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public event EventHandler Recalculated;
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public SheetData()
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{
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}
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public SheetData(int width, int height)
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{
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this.Rows = new List<RowData>(height);
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for (int i = 0; i < height; i++)
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{
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Rows.Add(new RowData(width));
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}
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}
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public string GetCellValue(string cellId)
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{
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lock (locker)
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{
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if (!tabelCalculated)
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{
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BuildTableConstants();
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}
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var cell = this[cellId];
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if (cell != null)
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{
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var expression = cell.Expression;
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if (expression.StartsWith("="))
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{
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expression = expression.Substring(1);
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var evaluator = new Expression(expression.ToLower());
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AddConstants(evaluator);
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var value = evaluator.calculate();
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return value.ToString();
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}
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else
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{
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// return the expression without evaluation
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return expression;
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}
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}
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return "0";
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}
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}
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public string EvaluateExpression(string expression)
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{
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lock (locker)
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{
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if (!tabelCalculated)
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{
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BuildTableConstants();
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}
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if(expression.StartsWith("="))
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{
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expression = expression.Substring(1).Trim();
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// if it is a direct cell reference than return that cells value
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if (expression.Length == 2)
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{
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var column = (uint)expression.Substring(0, 1).ToUpper()[0] - 'A';
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var row = (uint)expression.Substring(1, 1)[0] - '1';
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if (column < Width && row < Height)
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{
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return GetCellValue(CellId((int)column, (int)row));
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}
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}
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}
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var evaluator = new Expression(expression.ToLower());
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AddConstants(evaluator);
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var value = evaluator.calculate();
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return value.ToString();
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}
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}
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public string CellId(int x, int y)
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{
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lock (locker)
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{
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return $"{(char)('A' + x)}{y + 1}";
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}
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}
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/// <summary>
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/// Return the cell at the given position
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/// </summary>
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/// <param name="x">The x index</param>
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/// <param name="y">The y index</param>
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/// <returns>The TableCell</returns>
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public TableCell this[int x, int y]
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{
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get
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{
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lock (locker)
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{
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return this[CellId(x, y)];
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}
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}
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set
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{
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lock (locker)
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{
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this[CellId(x, y)] = value;
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}
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}
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}
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/// <summary>
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/// Get the Table cell for the given cellId
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/// </summary>
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/// <param name="cellId"></param>
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/// <returns>The table cell for the id</returns>
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public TableCell this[string cellId]
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{
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get
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{
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lock (locker)
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{
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if (cellId.Length == 2)
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{
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var x = cellId.Substring(0, 1).ToUpper()[0] - 'A';
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var y = cellId.Substring(1, 1)[0] - '1';
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return Rows[y].Cells[x];
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}
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else
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{
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foreach (var row in Rows)
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{
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foreach (var cell in row.Cells)
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{
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if (cellId.Equals(cell.Name, StringComparison.OrdinalIgnoreCase))
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{
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return cell;
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}
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}
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}
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}
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return null;
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}
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}
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set
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{
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lock (locker)
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{
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if (cellId.Length == 2)
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{
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var x = cellId.Substring(0, 1).ToUpper()[0] - 'A';
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var y = cellId.Substring(1, 1)[0] - '1';
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Rows[y].Cells[x] = value;
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}
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else
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{
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foreach (var row in Rows)
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{
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for (int i = 0; i < row.Cells.Count; i++)
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{
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if (cellId.Equals(row.Cells[i].Name, StringComparison.OrdinalIgnoreCase))
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{
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row.Cells[i] = value;
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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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[JsonIgnore]
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public int Width => Rows.Count;
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[JsonIgnore]
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public int Height => Rows[0].Cells.Count;
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public class CellFormat
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{
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public enum DataTypes
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{
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String,
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Number,
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Curency,
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DateTime,
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}
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public int DecimalPlaces = 10;
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public DataTypes DataType;
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public Agg.Font.Justification Justification;
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public bool Bold;
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}
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public class TableCell
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{
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/// <summary>
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/// The user override id for this cell
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/// </summary>
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public string Name;
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/// <summary>
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/// The actual content typed into the cell
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/// </summary>
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public string Expression = "";
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/// <summary>
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/// How to format this data in the display
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/// </summary>
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public CellFormat Format;
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public override string ToString()
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{
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return Expression;
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}
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}
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public class RowData
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{
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public List<TableCell> Cells = new List<TableCell>();
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public RowData()
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{
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}
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public RowData(int numItems)
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{
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Cells = new List<TableCell>(numItems);
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for (int i = 0; i < numItems; i++)
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{
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Cells.Add(new TableCell());
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}
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}
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}
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public List<RowData> Rows = new List<RowData>();
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Dictionary<string, double> constants = new Dictionary<string, double>();
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private bool tabelCalculated;
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private IEnumerable<(int x, int y, TableCell cell)> EnumerateCells()
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{
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lock (locker)
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{
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for (int y = 0; y < Rows.Count; y++)
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{
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for (int x = 0; x < Rows[y].Cells.Count; x++)
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{
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yield return (x, y, this[x, y]);
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}
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}
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}
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}
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public void Recalculate()
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{
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BuildTableConstants();
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Recalculated?.Invoke(this, null);
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}
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private void BuildTableConstants()
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{
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double GetValue((int x, int y, TableCell cell) xyCell)
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{
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var expression = xyCell.cell.Expression;
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if (expression.StartsWith("="))
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{
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expression = expression.Substring(1);
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}
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if (expression.StartsWith("."))
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{
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expression = "0" + expression;
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}
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var evaluator = new Expression(expression.ToLower());
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AddConstants(evaluator);
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var value = evaluator.calculate();
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return value;
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}
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lock (locker)
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{
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constants.Clear();
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var list = EnumerateCells().ToList();
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var noSolution = new List<(int, int, TableCell)>();
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var addedConstant = false;
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// process all the cells until we can no longer solve a new value (needs to be DAG)
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do
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{
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addedConstant = false;
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foreach (var xyCell in list)
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{
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double value = GetValue(xyCell);
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if (double.IsNaN(value)
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|| double.IsInfinity(value))
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{
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noSolution.Add(xyCell);
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}
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else
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{
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constants.Add(CellId(xyCell.x, xyCell.y).ToLower(), value);
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if (!string.IsNullOrEmpty(xyCell.cell.Name))
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{
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constants.Add(xyCell.cell.Name.ToLower(), value);
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}
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addedConstant = true;
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}
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}
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list.Clear();
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list.AddRange(noSolution);
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noSolution.Clear();
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} while (list.Count > 0 && addedConstant);
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// add the rest of the cells to constants as 0's
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foreach (var xyCell in list)
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{
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constants.Add(CellId(xyCell.x, xyCell.y).ToLower(), 0);
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if (!string.IsNullOrEmpty(xyCell.cell.Name))
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{
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constants.Add(xyCell.cell.Name.ToLower(), 0);
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}
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}
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tabelCalculated = true;
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}
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}
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private void AddConstants(Expression evaluator)
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{
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lock (locker)
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{
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foreach (var kvp in constants)
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{
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evaluator.defineConstant(kvp.Key, kvp.Value);
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}
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}
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}
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}
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} |