Merge branch 'master' of https://github.com/ButchersBoy/MaterialDesignInXamlToolkit

Author: ButchersBoy

MaterialDesignThemes.Wpf/Converters/MathConverter.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace MaterialDesignThemes.Wpf.Converters
+{
+    public enum MathOperation
+    {
+        Add,
+        Sub,
+        Multiply,
+        Divide
+    }
+
+    public sealed class MathConverter : IValueConverter
+    {
+        public MathOperation Operation { get; set; }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            double value1, value2;
+            if (Double.TryParse(value.ToString(), out value1) && Double.TryParse(parameter.ToString(), out value2))
+            {
+                switch (Operation)
+                {
+                    default:
+                    case MathOperation.Add:
+                        return value1 + value2;
+                    case MathOperation.Divide:
+                        return value1 / value2;
+                    case MathOperation.Multiply:
+                        return value1 * value2;
+                    case MathOperation.Sub:
+                        return value1 - value2;
+                }
+            }
+
+            return Binding.DoNothing;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return Binding.DoNothing;
+        }
+    }
+}

MaterialDesignThemes.Wpf/Converters/MathMultipleConverter.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace MaterialDesignThemes.Wpf.Converters
+{
+    public sealed class MathMultipleConverter : IMultiValueConverter
+    {
+        public MathOperation Operation { get; set; }
+        
+        public object Convert(object[] value, Type targetType, object parameter, CultureInfo culture)
+        {
+            double value1, value2;
+            if (Double.TryParse(value[0].ToString(), out value1) && Double.TryParse(value[1].ToString(), out value2))
+            {
+                switch (Operation)
+                {
+                    default:
+                    case MathOperation.Add:
+                        return value1 + value2;
+                    case MathOperation.Divide:
+                        return value1 / value2;
+                    case MathOperation.Multiply:
+                        return value1 * value2;
+                    case MathOperation.Sub:
+                        return value1 - value2;
+                }
+            }
+
+            return Binding.DoNothing;
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

MaterialDesignThemes.Wpf/MaterialDesignThemes.Wpf.csproj

@@ -216,6 +216,8 @@
     <Compile Include="Converters\ClockItemIsCheckedConverter.cs" />
     <Compile Include="Converters\ClockLineConverter.cs" />
     <Compile Include="Converters\DrawerOffsetConverter.cs" />
+    <Compile Include="Converters\MathConverter.cs" />
+    <Compile Include="Converters\MathMultipleConverter.cs" />
     <Compile Include="Converters\NotConverter.cs" />
     <Compile Include="Converters\NotNullToVisibilityConverter.cs" />
     <Compile Include="Converters\NotZeroToVisibilityConverter.cs" />