Added source code.

2018-02-06 01:24:46 +02:00
parent 1d9f2990c8
commit 8b28da5b80
367 changed files with 22964 additions and 0 deletions
--- a/Source/GraphingCalculator/IO/ExpressionFile.cs
+++ b/Source/GraphingCalculator/IO/ExpressionFile.cs
@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace GraphingCalculator.IO
+{
+    public class ExpressionFile
+    {
+        private List<VisualExpression> expressions = new List<VisualExpression>();
+        public List<VisualExpression> Expressions { get { return expressions; } }
+
+        public void SaveToFile(string filename)
+        {
+            System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(filename, new System.Xml.XmlWriterSettings() { Indent = true });
+            writer.WriteStartDocument();
+            writer.WriteStartElement("Document");
+
+            // Write expressions
+            writer.WriteStartElement("ExpressionList");
+            foreach (var i in Expressions)
+            {
+                writer.WriteStartElement("Expression");
+                writer.WriteAttributeString("String", i.ExpressionString);
+                writer.WriteAttributeString("IsVisible", i.IsVisible.ToString());
+                writer.WriteAttributeString("Color", i.Color.ToString());
+
+                foreach (var j in i.Variables)
+                {
+                    writer.WriteStartElement("Variable");
+                    writer.WriteAttributeString("Key", j.Key);
+                    writer.WriteAttributeString("Value", j.Value.ToString());
+                    writer.WriteEndElement();
+                }
+
+                writer.WriteEndElement();
+            }
+
+            writer.WriteEndElement();
+
+            // Finish
+            writer.WriteEndElement();
+            writer.WriteEndDocument();
+            writer.Close();
+        }
+
+        public void LoadFromFile(string filename)
+        {
+            System.Xml.XmlReader reader = System.Xml.XmlReader.Create(filename);
+            string varKey = "", varVal = "";
+            VisualExpression expr;
+            
+            while (reader.Read())
+                switch (reader.NodeType)
+                {
+                    case System.Xml.XmlNodeType.Element:
+                        // Read an expression
+                        if (reader.Name == "Expression")
+                        {
+                            expr = new VisualExpression();
+                            while (reader.MoveToNextAttribute()) {
+                                if (reader.Name == "String") expr.ExpressionString = reader.Value;
+                                else if (reader.Name == "IsVisible") expr.IsVisible = bool.Parse(reader.Value);
+                                else if (reader.Name == "Color") expr.Color = (System.Windows.Media.Color) System.Windows.Media.ColorConverter.ConvertFromString(reader.Value);
+                            }
+
+                            this.Expressions.Add(expr);
+                        }
+
+                        // A variable
+                        else if (reader.Name == "Variable") 
+                        {
+                            while (reader.MoveToNextAttribute()) {
+                                if (reader.Name == "Key") varKey = reader.Value;
+                                else if (reader.Name == "Value") varVal = reader.Value; 
+                            }
+
+                            if (varKey != "") 
+                                this.Expressions.Last().Variables[varKey] = double.Parse(varVal);
+                        }
+
+                        break;
+                }
+
+            reader.Close();
+        }
+    }
+}