Merge pull request #3329 from donandren/improveparsing

add some parsing of primitive types

src/Avalonia.Visuals/Matrix.cs

@@ -306,7 +306,7 @@ namespace Avalonia
         /// <summary>
         /// Parses a <see cref="Matrix"/> string.
         /// </summary>
-        /// <param name="s">The string.</param>
+        /// <param name="s">Six comma-delimited double values (m11, m12, m21, m22, offsetX, offsetY) that describe the new <see cref="Matrix"/></param>
         /// <returns>The <see cref="Matrix"/>.</returns>
         public static Matrix Parse(string s)
         {

src/Avalonia.Visuals/Media/Transform.cs

@@ -28,6 +28,16 @@ namespace Avalonia.Media
         /// </summary>
         public abstract Matrix Value { get; }
 
+        /// <summary>
+        /// Parses a <see cref="Transform"/> string.
+        /// </summary>
+        /// <param name="s">Six comma-delimited double values that describe the new <see cref="Transform"/>. For details check <see cref="Matrix.Parse(string)"/> </param>
+        /// <returns>The <see cref="Transform"/>.</returns>
+        public static Transform Parse(string s)
+        {
+            return new MatrixTransform(Matrix.Parse(s));
+        }
+
         /// <summary>
         /// Raises the <see cref="Changed"/> event.
         /// </summary>
@@ -35,5 +45,14 @@ namespace Avalonia.Media
         {
             Changed?.Invoke(this, EventArgs.Empty);
         }
+
+        /// <summary>
+        /// Returns a String representing this transform matrix instance.
+        /// </summary>
+        /// <returns>The string representation.</returns>
+        public override string ToString()
+        {
+            return Value.ToString();
+        }
     }
 }

src/Avalonia.Visuals/Point.cs

@@ -175,7 +175,7 @@ namespace Avalonia
         /// Parses a <see cref="Point"/> string.
         /// </summary>
         /// <param name="s">The string.</param>
-        /// <returns>The <see cref="Thickness"/>.</returns>
+        /// <returns>The <see cref="Point"/>.</returns>
         public static Point Parse(string s)
         {
             using (var tokenizer = new StringTokenizer(s, CultureInfo.InvariantCulture, exceptionMessage: "Invalid Point."))

src/Avalonia.Visuals/RelativePoint.cs

@@ -177,5 +177,16 @@ namespace Avalonia
                     unit);
             }
         }
+
+        /// <summary>
+        /// Returns a String representing this RelativePoint instance.
+        /// </summary>
+        /// <returns>The string representation.</returns>
+        public override string ToString()
+        {
+            return _unit == RelativeUnit.Absolute ?
+                _point.ToString() :
+                 string.Format(CultureInfo.InvariantCulture, "{0}%, {1}%", _point.X * 100, _point.Y * 100);
+        }
     }
 }

src/Avalonia.Visuals/Vector.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Globalization;
 using Avalonia.Animation.Animators;
+using Avalonia.Utilities;
 using JetBrains.Annotations;
 
 namespace Avalonia
@@ -85,6 +86,22 @@ namespace Avalonia
         public static Vector operator /(Vector vector, double scale)
             => Divide(vector, scale);
 
+        /// <summary>
+        /// Parses a <see cref="Vector"/> string.
+        /// </summary>
+        /// <param name="s">The string.</param>
+        /// <returns>The <see cref="Vector"/>.</returns>
+        public static Vector Parse(string s)
+        {
+            using (var tokenizer = new StringTokenizer(s, CultureInfo.InvariantCulture, exceptionMessage: "Invalid Vector."))
+            {
+                return new Vector(
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble()
+                );
+            }
+        }
+
         /// <summary>
         /// Length of the vector
         /// </summary>
@@ -166,9 +183,9 @@ namespace Avalonia
         }
 
         /// <summary>
-        /// Returns the string representation of the point.
+        /// Returns the string representation of the vector.
         /// </summary>
-        /// <returns>The string representation of the point.</returns>
+        /// <returns>The string representation of the vector.</returns>
         public override string ToString()
         {
             return string.Format(CultureInfo.InvariantCulture, "{0}, {1}", _x, _y);