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) { double newWidth = size.Width * scaleFactor; return Resize(size.Width, size.Height, newWidth, null, null, null); } /// <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, double? height, double? maxWidth, double? maxHeight) { 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, double? height, double? maxWidth, double? maxHeight) { 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.Value < newHeight) { newWidth = GetNewWidth(newHeight, newWidth, maxHeight.Value); newHeight = maxHeight.Value; } if (maxWidth.HasValue && maxWidth.Value < 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) { double 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) { double scaleFactor = newWidth; scaleFactor /= currentWidth; scaleFactor *= currentHeight; return scaleFactor; } } }