Pushing missing changes

1 files changed, 145 insertions, 0 deletions

diff --git a/MediaBrowser.Model/Drawing/DrawingUtils.cs b/MediaBrowser.Model/Drawing/DrawingUtils.cs
new file mode 100644
index 000000000..fabe1b24c
--- /dev/null
+++ b/MediaBrowser.Model/Drawing/DrawingUtils.cs
@@ -0,0 +1,145 @@
+
+namespace MediaBrowser.Model.Drawing
+{
+    /// <summary>
+    /// Class DrawingUtils
+    /// </summary>
+    public static class DrawingUtils
+    {
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        /// <param name="currentWidth">Width of the current.</param>
+        /// <param name="currentHeight">Height of the current.</param>
+        /// <param name="scaleFactor">The scale factor.</param>
+        /// <returns>ImageSize.</returns>
+        public static ImageSize Scale(double currentWidth, double currentHeight, double scaleFactor)
+        {
+            return Scale(new ImageSize { Width = currentWidth, Height = currentHeight }, scaleFactor);
+        }
+
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        /// <param name="size">The size.</param>
+        /// <param name="scaleFactor">The scale factor.</param>
+        /// <returns>ImageSize.</returns>
+        public static ImageSize Scale(ImageSize size, double scaleFactor)
+        {
+            var newWidth = size.Width * scaleFactor;
+
+            return Resize(size.Width, size.Height, newWidth);
+        }
+
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        /// <param name="currentWidth">Width of the current.</param>
+        /// <param name="currentHeight">Height of the current.</param>
+        /// <param name="width">The width.</param>
+        /// <param name="height">The height.</param>
+        /// <param name="maxWidth">A max fixed width, if desired</param>
+        /// <param name="maxHeight">A max fixed height, if desired</param>
+        /// <returns>ImageSize.</returns>
+        public static ImageSize Resize(double currentWidth, double currentHeight, double? width = null, double? height = null, double? maxWidth = null, double? maxHeight = null)
+        {
+            return Resize(new ImageSize { Width = currentWidth, Height = currentHeight }, width, height, maxWidth, maxHeight);
+        }
+
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        /// <param name="size">The original size object</param>
+        /// <param name="width">A new fixed width, if desired</param>
+        /// <param name="height">A new fixed height, if desired</param>
+        /// <param name="maxWidth">A max fixed width, if desired</param>
+        /// <param name="maxHeight">A max fixed height, if desired</param>
+        /// <returns>A new size object</returns>
+        public static ImageSize Resize(ImageSize size, double? width = null, double? height = null, double? maxWidth = null, double? maxHeight = null)
+        {
+            double newWidth = size.Width;
+            double newHeight = size.Height;
+
+            if (width.HasValue && height.HasValue)
+            {
+                newWidth = width.Value;
+                newHeight = height.Value;
+            }
+
+            else if (height.HasValue)
+            {
+                newWidth = GetNewWidth(newHeight, newWidth, height.Value);
+                newHeight = height.Value;
+            }
+
+            else if (width.HasValue)
+            {
+                newHeight = GetNewHeight(newHeight, newWidth, width.Value);
+                newWidth = width.Value;
+            }
+
+            if (maxHeight.HasValue && maxHeight < newHeight)
+            {
+                newWidth = GetNewWidth(newHeight, newWidth, maxHeight.Value);
+                newHeight = maxHeight.Value;
+            }
+
+            if (maxWidth.HasValue && maxWidth < newWidth)
+            {
+                newHeight = GetNewHeight(newHeight, newWidth, maxWidth.Value);
+                newWidth = maxWidth.Value;
+            }
+
+            return new ImageSize { Width = newWidth, Height = newHeight };
+        }
+
+        /// <summary>
+        /// Gets the new width.
+        /// </summary>
+        /// <param name="currentHeight">Height of the current.</param>
+        /// <param name="currentWidth">Width of the current.</param>
+        /// <param name="newHeight">The new height.</param>
+        /// <returns>System.Double.</returns>
+        private static double GetNewWidth(double currentHeight, double currentWidth, double newHeight)
+        {
+            var scaleFactor = newHeight;
+            scaleFactor /= currentHeight;
+            scaleFactor *= currentWidth;
+
+            return scaleFactor;
+        }
+
+        /// <summary>
+        /// Gets the new height.
+        /// </summary>
+        /// <param name="currentHeight">Height of the current.</param>
+        /// <param name="currentWidth">Width of the current.</param>
+        /// <param name="newWidth">The new width.</param>
+        /// <returns>System.Double.</returns>
+        private static double GetNewHeight(double currentHeight, double currentWidth, double newWidth)
+        {
+            var scaleFactor = newWidth;
+            scaleFactor /= currentWidth;
+            scaleFactor *= currentHeight;
+
+            return scaleFactor;
+        }
+    }
+
+    /// <summary>
+    /// Struct ImageSize
+    /// </summary>
+    public struct ImageSize
+    {
+        /// <summary>
+        /// Gets or sets the height.
+        /// </summary>
+        /// <value>The height.</value>
+        public double Height { get; set; }
+        /// <summary>
+        /// Gets or sets the width.
+        /// </summary>
+        /// <value>The width.</value>
+        public double Width { get; set; }
+    }
+}