Merge branch 'master' into control-validation-message-fix

src/Avalonia.Themes.Default/PathIcon.xaml

@@ -2,14 +2,15 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="PathIcon">
     <Setter Property="Foreground" Value="{DynamicResource ThemeForegroundColor}" />
-    <Setter Property="Height" Value="16" />
-    <Setter Property="Width" Value="16" />
+    <Setter Property="Height" Value="{DynamicResource IconElementThemeHeight}" />
+    <Setter Property="Width" Value="{DynamicResource IconElementThemeWidth}" />
     <Setter Property="Template">
       <ControlTemplate>
         <Viewbox Height="{TemplateBinding Height}"
                  Width="{TemplateBinding Width}">
           <Path Fill="{TemplateBinding Foreground}"
-                Data="{TemplateBinding Data}" />
+                Data="{TemplateBinding Data}"
+                Stretch="Uniform" />
         </Viewbox>
       </ControlTemplate>
     </Setter>

src/Avalonia.Themes.Fluent/PathIcon.xaml

@@ -10,14 +10,15 @@
   </Design.PreviewWith>
   <Style Selector="PathIcon">
     <Setter Property="Foreground" Value="{DynamicResource TextControlForeground}" />
-    <Setter Property="Height" Value="16" />
-    <Setter Property="Width" Value="16" />
+    <Setter Property="Height" Value="{DynamicResource IconElementThemeHeight}" />
+    <Setter Property="Width" Value="{DynamicResource IconElementThemeWidth}" />
     <Setter Property="Template">
       <ControlTemplate>
         <Viewbox Height="{TemplateBinding Height}"
                  Width="{TemplateBinding Width}">
           <Path Fill="{TemplateBinding Foreground}"
-                Data="{TemplateBinding Data}" />
+                Data="{TemplateBinding Data}"
+                Stretch="Uniform" />
         </Viewbox>
       </ControlTemplate>
     </Setter>

src/Avalonia.Visuals/Point.cs

@@ -267,5 +267,24 @@ namespace Avalonia
         {
             return new Point(_x, y);
         }
+
+        /// <summary>
+        /// Deconstructs the point into its X and Y coordinates.
+        /// </summary>
+        /// <param name="x">The X coordinate.</param>
+        /// <param name="y">The Y coordinate.</param>
+        public void Deconstruct(out double x, out double y)
+        {
+            x = this._x;
+            y = this._y;
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the X and Y coordinates are zero.
+        /// </summary>
+        public bool IsDefault
+        {
+            get { return (_x == 0) && (_y == 0); }
+        }
     }
 }

src/Avalonia.Visuals/Size.cs

@@ -276,5 +276,24 @@ namespace Avalonia
         {
             return string.Format(CultureInfo.InvariantCulture, "{0}, {1}", _width, _height);
         }
+
+        /// <summary>
+        /// Deconstructs the size into its Width and Height values.
+        /// </summary>
+        /// <param name="width">The width.</param>
+        /// <param name="height">The height.</param>
+        public void Deconstruct(out double width, out double height)
+        {
+            width = this._width;
+            height = this._height;
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the Width and Height values are zero.
+        /// </summary>
+        public bool IsDefault
+        {
+            get { return (_width == 0) && (_height == 0); }
+        }
     }
 }

src/Avalonia.Visuals/Thickness.cs

@@ -272,5 +272,28 @@ namespace Avalonia
         {
             return $"{_left},{_top},{_right},{_bottom}";
         }
+
+        /// <summary>
+        /// Deconstructor the thickness into its left, top, right and bottom thickness values.
+        /// </summary>
+        /// <param name="left">The thickness on the left.</param>
+        /// <param name="top">The thickness on the top.</param>
+        /// <param name="right">The thickness on the right.</param>
+        /// <param name="bottom">The thickness on the bottom.</param>
+        public void Deconstruct(out double left, out double top, out double right, out double bottom)
+        {
+            left = this._left;
+            top = this._top;
+            right = this._right;
+            bottom = this._bottom;        
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the left, top, right and bottom thickness values are zero.
+        /// </summary>
+        public bool IsDefault
+        {
+            get { return (_left == 0) && (_top == 0) && (_right == 0) && (_bottom == 0); }
+        }
     }
 }

src/Avalonia.Visuals/Vector.cs

@@ -333,5 +333,24 @@ namespace Avalonia
         /// </summary>
         public static Vector UnitY
             => new Vector(0, 1);
+
+        /// <summary>
+        /// Deconstructs the vector into its X and Y components.
+        /// </summary>
+        /// <param name="x">The X component.</param>
+        /// <param name="y">The Y component.</param>
+        public void Deconstruct(out double x, out double y)
+        {
+            x = this._x;
+            y = this._y;
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the X and Y components are zero.
+        /// </summary>
+        public bool IsDefault
+        {
+            get { return (_x == 0) && (_y == 0); }
+        }
     }
 }