ScaleTransform Added

src/Perspex.SceneGraph/Media/ScaleTransform.cs

@@ -0,0 +1,69 @@
+// Copyright (c) The Perspex Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System;
+
+namespace Perspex.Media
+{
+    /// <summary>
+    /// Scale an <see cref="IVisual"/>.
+    /// </summary>
+    public class ScaleTransform : Transform
+    {
+        /// <summary>
+        /// Defines the <see cref="ScaleX"/> property.
+        /// </summary>
+        public static readonly StyledProperty<double> ScaleXProperty =
+                    PerspexProperty.Register<ScaleTransform, double>(nameof(ScaleX), 1);
+
+        /// <summary>
+        /// Defines the <see cref="ScaleY"/> property.
+        /// </summary>
+        public static readonly StyledProperty<double> ScaleYProperty =
+                    PerspexProperty.Register<ScaleTransform, double>(nameof(ScaleY), 1);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ScaleTransform"/> class.
+        /// </summary>
+        public ScaleTransform()
+        {
+            this.GetObservable(ScaleXProperty).Subscribe(_ => RaiseChanged());
+            this.GetObservable(ScaleYProperty).Subscribe(_ => RaiseChanged());
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ScaleTransform"/> class.
+        /// </summary>
+        /// <param name="scaleX">ScaleX</param>
+        /// <param name="scaleY">ScaleY</param>
+        public ScaleTransform(double scaleX, double scaleY)
+            : this()
+        {
+            ScaleX = scaleX;
+            ScaleY = scaleY;
+        }
+
+        /// <summary>
+        /// Gets or sets the ScaleX property.
+        /// </summary>
+        public double ScaleX
+        {
+            get { return GetValue(ScaleXProperty); }
+            set { SetValue(ScaleXProperty, value); }
+        }
+
+        /// <summary>
+        /// Gets or sets the ScaleY property.
+        /// </summary>
+        public double ScaleY
+        {
+            get { return GetValue(ScaleYProperty); }
+            set { SetValue(ScaleYProperty, value); }
+        }
+
+        /// <summary>
+        /// Gets the tranform's <see cref="Matrix"/>.
+        /// </summary>
+        public override Matrix Value => Matrix.CreateScale(ScaleX, ScaleY);
+    }
+}

src/Perspex.SceneGraph/Perspex.SceneGraph.csproj

@@ -80,6 +80,7 @@
     <Compile Include="Media\LinearGradientBrush.cs" />
     <Compile Include="Media\MediaExtensions.cs" />
     <Compile Include="Media\PenLineCap.cs" />
+    <Compile Include="Media\ScaleTransform.cs" />
     <Compile Include="Media\TextAlignment.cs" />
     <Compile Include="Media\FontWeight.cs" />
     <Compile Include="Media\FontStyle.cs" />