Changing folder names

aurora-sharp-desktop/Aurora/UserInterface/Converters/DoubleToLayoutOptions.cs

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+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Converters
+{
+    public class DoubleToLayoutOptionsConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var result = double.TryParse(value.ToString(), out double val);
+            if (result && val > 0)
+            {
+                return LayoutOptions.CenterAndExpand;
+            }
+            return LayoutOptions.FillAndExpand;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}

aurora-sharp-desktop/Aurora/UserInterface/Converters/InverseBoolConverter.cs

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+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Converters
+{
+    public class InverseBoolConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (!(value is bool))
+            {
+                throw new InvalidOperationException("The target must be a boolean");
+            }
+
+            return !(bool)value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}

aurora-sharp-desktop/Aurora/UserInterface/Converters/NullToBullConverter.cs

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+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Converters
+{
+    public class NullToBoolConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value != null;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}

aurora-sharp-desktop/Aurora/UserInterface/Converters/PlayIconConverter.cs

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+using System;
+namespace Aurora.Design.Converters
+{
+    public class PlayIconConverter
+    {
+        public PlayIconConverter()
+        {
+        }
+    }
+}

aurora-sharp-desktop/Aurora/UserInterface/Converters/SelectedTabHeaderToTabBackgroundColorConverter.cs

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+using System;
+using System.Globalization;
+using Aurora.Design.Components.TabView;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Converters
+{
+    class SelectedTabHeaderToTabBackgroundColorConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            bool isCurrentTabSelected = false;
+            if (!string.IsNullOrWhiteSpace(value?.ToString()))
+                bool.TryParse(value.ToString(), out isCurrentTabSelected);
+
+            if (parameter is TabViewControl tvc && isCurrentTabSelected)
+            {
+                return tvc.HeaderSelectionUnderlineColor;
+            }
+            else
+            {
+                return Color.Transparent;
+            }
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

aurora-sharp-desktop/Aurora/UserInterface/Converters/ToUpperConverter.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Converters
+{
+    public class ToUpperConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value.ToString().ToUpper();
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}