Basic support of CSS text-transform

Source/DataTypes/SvgTextTransformation.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.ComponentModel;
+
+namespace Svg
+{
+    /// <summary>This property describes transformations that are added to the text of an element.</summary>
+    [TypeConverter(typeof(SvgTextTransformationConverter))]
+    [Flags]
+    public enum SvgTextTransformation
+    {
+        /// <summary>The value is inherited from the parent element.</summary>
+        Inherit = 0,
+
+        /// <summary>The text is not transformed.</summary>
+        None = 1,
+
+        /// <summary>First letter of each word of the text is converted to uppercase.</summary>
+        Capitalize = 2,
+
+        /// <summary>The text is converted to uppercase.</summary>
+        Uppercase = 4,
+
+        /// <summary>The text is converted to lowercase.</summary>
+        Lowercase = 8
+    }
+}

Source/Painting/EnumConverters.cs

@@ -300,6 +300,11 @@ namespace Svg
         }
     }
 
+    public sealed class SvgTextTransformationConverter : EnumBaseConverter<SvgTextTransformation>
+    {
+        public SvgTextTransformationConverter() : base(SvgTextTransformation.None) { }
+    }
+
     public static class Enums 
     {
         [CLSCompliant(false)]

Source/Svg.csproj

@@ -104,6 +104,7 @@
     <Compile Include="Clipping and Masking\SvgMask.cs" />
     <Compile Include="DataTypes\ISvgSupportsCoordinateUnits.cs" />
     <Compile Include="DataTypes\SvgPointCollection.cs" />
+    <Compile Include="DataTypes\SvgTextTransformation.cs" />
     <Compile Include="DataTypes\SvgTextDecoration.cs" />
     <Compile Include="DataTypes\SvgTextLengthAdjust.cs" />
     <Compile Include="DataTypes\SvgTextPathMethod.cs" />

Source/SvgElementFactory.cs

@@ -217,6 +217,7 @@ namespace Svg
                 case "text-anchor":
                 case "text-decoration":
                 case "text-rendering":
+                case "text-transform":
                 case "unicode-bidi":
                 case "visibility":
                 case "word-spacing":

Source/SvgElementStyle.cs

@@ -249,6 +249,16 @@ namespace Svg
             set { this.Attributes["font-weight"] = value; this.IsPathDirty = true; }
         }
 
+        /// <summary>
+        /// Refers to the text transformation.
+        /// </summary>
+        [SvgAttribute("text-transform", true)]
+        public virtual SvgTextTransformation TextTransformation
+        {
+            get { return (SvgTextTransformation)(this.Attributes["text-transform"] ?? SvgTextTransformation.Inherit); }
+            set { this.Attributes["text-transform"] = value; this.IsPathDirty = true; }
+        }
+
         private enum FontParseState
         {
             fontStyle,

Source/Text/SvgTextBase.cs

@@ -8,6 +8,7 @@ using System.Drawing.Drawing2D;
 using System.Drawing.Text;
 using Svg.DataTypes;
 using System.Linq;
+using System.Globalization;
 
 namespace Svg
 {
@@ -393,12 +394,13 @@ namespace Svg
         private static readonly Regex MultipleSpaces = new Regex(@" {2,}", RegexOptions.Compiled);
 
         /// <summary>
-        /// Prepare the text according to the whitespace handling rules.  <see href="http://www.w3.org/TR/SVG/text.html">SVG Spec</see>.
+        /// Prepare the text according to the whitespace handling rules and text transformations.  <see href="http://www.w3.org/TR/SVG/text.html">SVG Spec</see>.
         /// </summary>
         /// <param name="value">Text to be prepared</param>
         /// <returns>Prepared text</returns>
         protected string PrepareText(string value)
         {
+            value = ApplyTransformation(value);
             if (this.SpaceHandling == XmlSpaceHandling.preserve)
             {
                 return value.Replace('\t', ' ').Replace("\r\n", " ").Replace('\r', ' ').Replace('\n', ' ');
@@ -410,6 +412,23 @@ namespace Svg
             }
         }
 
+        private string ApplyTransformation(string value)
+        {
+            switch (this.TextTransformation)
+            {
+                case SvgTextTransformation.Capitalize:
+                    return value.ToUpper();
+
+                case SvgTextTransformation.Uppercase:
+                    return value.ToUpper();
+
+                case SvgTextTransformation.Lowercase:
+                    return CultureInfo.CurrentCulture.TextInfo.ToTitleCase(value);
+            }
+
+            return value;
+        }
+
         [SvgAttribute("onchange")]
         public event EventHandler<StringArg> Change;