80 lines
2.8 KiB
C#
80 lines
2.8 KiB
C#
using System;
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namespace MediaBrowser.Model.Drawing
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{
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/// <summary>
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/// Class DrawingUtils
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/// </summary>
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public static class DrawingUtils
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{
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/// <summary>
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/// Resizes a set of dimensions
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/// </summary>
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/// <param name="size">The original size object</param>
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/// <param name="width">A new fixed width, if desired</param>
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/// <param name="height">A new fixed height, if desired</param>
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/// <param name="maxWidth">A max fixed width, if desired</param>
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/// <param name="maxHeight">A max fixed height, if desired</param>
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/// <returns>A new size object</returns>
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public static ImageDimensions Resize(ImageDimensions size,
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int width,
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int height,
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int maxWidth,
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int maxHeight)
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{
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int newWidth = size.Width;
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int newHeight = size.Height;
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if (width > 0 && height > 0)
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{
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newWidth = width;
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newHeight = height;
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}
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else if (height > 0)
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{
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newWidth = GetNewWidth(newHeight, newWidth, height);
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newHeight = height;
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}
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else if (width > 0)
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{
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newHeight = GetNewHeight(newHeight, newWidth, width);
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newWidth = width;
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}
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if (maxHeight > 0 && maxHeight < newHeight)
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{
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newWidth = GetNewWidth(newHeight, newWidth, maxHeight);
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newHeight = maxHeight;
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}
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if (maxWidth > 0 && maxWidth < newWidth)
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{
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newHeight = GetNewHeight(newHeight, newWidth, maxWidth);
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newWidth = maxWidth;
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}
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return new ImageDimensions(newWidth, newHeight);
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}
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/// <summary>
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/// Gets the new width.
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/// </summary>
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/// <param name="currentHeight">Height of the current.</param>
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/// <param name="currentWidth">Width of the current.</param>
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/// <param name="newHeight">The new height.</param>
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/// <returns>the new width</returns>
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private static int GetNewWidth(int currentHeight, int currentWidth, int newHeight)
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=> Convert.ToInt32((double)newHeight / currentHeight * currentWidth);
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/// <summary>
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/// Gets the new height.
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/// </summary>
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/// <param name="currentHeight">Height of the current.</param>
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/// <param name="currentWidth">Width of the current.</param>
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/// <param name="newWidth">The new width.</param>
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/// <returns>System.Double.</returns>
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private static int GetNewHeight(int currentHeight, int currentWidth, int newWidth)
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=> Convert.ToInt32((double)newWidth / currentWidth * currentHeight);
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}
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}
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