Bug fixes: Gradients and Filters

- Support of generic fonts (serif, sans-serif, monospace)
- Initial support of filters
- Fixes to gradient rendering

Source/Text/SvgTextBase.cs

@@ -275,6 +275,7 @@ namespace Svg
                          where (n is SvgContentNode || n is SvgTextBase) && !string.IsNullOrEmpty(n.Content)
                          select n).ToList();
 
+            // Individual character spacing
             if (nodes.FirstOrDefault() is SvgContentNode && _x.Count > 1)
             {
                 string ch;
@@ -298,7 +299,9 @@ namespace Svg
                 }
             }
 
+            // Calculate the bounds of the text
             ISvgNode node;
+            var accumulateDims = true;
             for (var i = 0; i < nodes.Count; i++)
             {
                 node = nodes[i];
@@ -316,10 +319,15 @@ namespace Svg
                     {
                         stringBounds = innerText.GetTextBounds(renderer).Bounds;
                         result.Nodes.Add(new NodeBounds() { Bounds = stringBounds, Node = node, xOffset = totalWidth });
-                        if (innerText.Dx.Count == 1) totalWidth += innerText.Dx[0].ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
+                        accumulateDims = accumulateDims && SvgUnitCollection.IsNullOrEmpty(innerText.X) && SvgUnitCollection.IsNullOrEmpty(innerText.Y);
+                        if (accumulateDims && innerText.Dx.Count == 1) totalWidth += innerText.Dx[0].ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
+                    }
+
+                    if (accumulateDims)
+                    {
+                        totalHeight = Math.Max(totalHeight, stringBounds.Height);
+                        totalWidth += stringBounds.Width;
                     }
-                    totalHeight = Math.Max(totalHeight, stringBounds.Height);
-                    totalWidth += stringBounds.Width;
                 }
             }
             result.Bounds = new SizeF(totalWidth, totalHeight);

Tests/SvgW3CTestRunner/View.cs

@@ -32,9 +32,16 @@ namespace SvgW3CTestRunner
             try
             {
                 var doc = SvgDocument.Open(_svgBasePath + fileName);
-                var img = new Bitmap(480, 360);
-                doc.Draw(img);
-                picSvg.Image = img; 
+                if (fileName.StartsWith("__"))
+                {
+                    picSvg.Image = doc.Draw(); 
+                }
+                else
+                {
+                    var img = new Bitmap(480, 360);
+                    doc.Draw(img);
+                    picSvg.Image = img; 
+                }
             }
             catch (Exception ex)
             {