Take into account of parent transforms

Source/Text/SvgTextBase.Drawing.cs

@@ -26,11 +26,17 @@ public override RectangleF Bounds
                         continue;
                     path.AddPath(elem.Path(null), false);
                 }
-                if (Transforms == null || Transforms.Count == 0)
+                var transforms = Transforms;
+                if (transforms is null)
+                {
+                    // This is an SvgTextSpan which does not support the transform attribute, but parent transforms still apply.
+                    transforms = Parents.FirstOrDefault(p => p.Transforms != null)?.Transforms;
+                }
+                if (transforms is null || transforms.Count == 0)
                     return path.GetBounds();
 
                 using (path = (GraphicsPath)path.Clone())
-                using (var matrix = Transforms.GetMatrix())
+                using (var matrix = transforms.GetMatrix())
                 {
                     path.Transform(matrix);
                     return path.GetBounds();

Tests/Svg.UnitTests/SvgTextTests.cs

@@ -1,4 +1,5 @@
 using NUnit.Framework;
+using System.Drawing;
 using System.IO;
 using System.Xml;
 
@@ -83,5 +84,17 @@ public void TestWritesCoordinatesForCollectionChange()
             Assert.IsTrue(xml.Contains("dx=\"40\""));
             Assert.IsTrue(xml.Contains("dy=\"50\""));
         }
+
+        [Test]
+        public void TestParentTransformsRespected()
+        {
+            var span = new SvgTextSpan { Text = "abc" };
+            var b = span.Bounds;
+            Assert.AreNotEqual(new PointF(0f, 0f), b.Location);
+            var text = new SvgText { Transforms = new Transforms.SvgTransformCollection { new Transforms.SvgTranslate(10f, 20f) }, Children = { span } };
+            b.Offset(10f, 20f);
+            Assert.AreEqual(b, span.Bounds);
+            Assert.AreEqual(b, text.Bounds);
+        }
     }
 }