Adds support for linked gradient stops.

Source/Clipping and Masking/SvgClipPath.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Text;
 using System.Drawing;
 using System.Drawing.Drawing2D;
+using Svg.Transforms;
 
 namespace Svg
 {
@@ -63,7 +64,18 @@ namespace Svg
             if (graphicsElement != null && graphicsElement.Path != null)
             {
                 path.FillMode = (graphicsElement.ClipRule == SvgClipRule.NonZero) ? FillMode.Winding : FillMode.Alternate;
-                path.AddPath(graphicsElement.Path, false);
+
+                GraphicsPath childPath = graphicsElement.Path;
+
+                if (graphicsElement.Transforms != null)
+                {
+                    foreach (SvgTransform transform in graphicsElement.Transforms)
+                    {
+                        childPath.Transform(transform.Matrix);
+                    }
+                }
+
+                path.AddPath(childPath, false);
             }
 
             foreach (SvgElement child in element.Children)

Source/Painting/SvgGradientServer.cs

@@ -85,10 +85,18 @@ namespace Svg
             set { this._gradientUnits = value; }
         }
 
+        /// <summary>
+        /// Gets or sets another gradient fill from which to inherit the stops from.
+        /// </summary>
+        [SvgAttributeAttribute("href")]
         public SvgGradientServer InheritGradient
         {
             get { return this._inheritGradient; }
-            set { this._inheritGradient = value; }
+            set 
+            { 
+                this._inheritGradient = value;
+                this.InheritStops();
+            }
         }
 
         /// <summary>
@@ -161,22 +169,15 @@ namespace Svg
             return blend;
         }
 
-        protected virtual List<SvgGradientStop> InheritStops()
+        /// <summary>
+        // If this gradient contains no stops then it will search any inherited gradients for stops.
+        /// </summary>
+        protected virtual void InheritStops()
         {
-            List<SvgGradientStop> stops = new List<SvgGradientStop>();
-
-            if (this.Stops.Count > 0)
+            if (this.Stops.Count == 0 && this.InheritGradient != null)
             {
-                return stops;
+                _stops.AddRange(this.InheritGradient.Stops);
             }
-
-            if (this.InheritGradient != null)
-            {
-                List<SvgGradientStop> ownerStops = this.InheritGradient.InheritStops();
-                stops.AddRange(ownerStops);
-            }
-
-            return stops;
         }
     }
 }
\ No newline at end of file

Source/Painting/SvgPaintServerFactory.cs

@@ -33,6 +33,11 @@ namespace Svg
                 Uri id = new Uri(match.Groups[1].Value, UriKind.Relative);
                 return (SvgPaintServer)document.IdManager.GetElementById(id);
             }
+            // If referenced to to a different (linear or radial) gradient
+            else if (document.IdManager.GetElementById(value) != null && document.IdManager.GetElementById(value).GetType().BaseType == typeof(SvgGradientServer))
+            {
+                return (SvgPaintServer)document.IdManager.GetElementById(value);
+            }
             else // Otherwise try and parse as colour
             {
                 return new SvgColourServer((Color)_colourConverter.ConvertFrom(value.Trim()));

Source/Paths/SvgPath.cs

@@ -62,14 +62,6 @@ namespace Svg
                         segment.AddToPath(_path);
                     }
 
-                    if (base.Transforms != null)
-                    {
-                        foreach (SvgTransform transform in base.Transforms)
-                        {
-                            _path.Transform(transform.Matrix);
-                        }
-                    }
-
                     this.IsPathDirty = false;
                 }
                 return _path;