Zeta HTML Edit Control

namespace ZetaHtmlEditControl.Helper
{
	#region Using directives.
	// ----------------------------------------------------------------------
    using System.Drawing;
    using System.Drawing.Drawing2D;
    using System.Drawing.Imaging;

    // ----------------------------------------------------------------------
	#endregion

	/////////////////////////////////////////////////////////////////////////

	/// <summary>
	/// Class for scaling an image.
	/// </summary>
	internal static class ImageScaler
	{
		#region Scaling.
		// ------------------------------------------------------------------

		/// <summary>
		/// Scale the given image to the given size.
		/// Uses a high interpolation mode quality.
		/// </summary>
		/// <param name="image">The image.</param>
		/// <param name="width">The width.</param>
		/// <param name="height">The height.</param>
		/// <returns></returns>
		public static Image ScaleImage(
			Image image,
			int width,
			int height)
		{
			// http://stackoverflow.com/questions/249587/high-quality-image-scaling-c-sharp
			// http://stackoverflow.com/questions/6821261/after-resizing-white-image-gets-gray-border

			// NO "using" here, because the image is returned (and
			// would be disposed by "using")!
			var result = new Bitmap(image, width, height);

			result.SetResolution(image.HorizontalResolution, image.VerticalResolution);

			using (var g = Graphics.FromImage(result))
			{
				g.CompositingQuality = CompositingQuality.HighQuality;
				g.InterpolationMode = InterpolationMode.HighQualityBicubic;
				g.SmoothingMode = SmoothingMode.HighQuality;
				g.PixelOffsetMode = PixelOffsetMode.HighQuality;

				var ia = new ImageAttributes();
				ia.SetWrapMode(WrapMode.TileFlipXY);

				g.DrawImage(
					image,
					new Rectangle(
						0,
						0,
						width,
						height),
					0,
					0,
					image.Width,
					image.Height,
					GraphicsUnit.Pixel,
					ia);

				return result;
			}
		}

		// ------------------------------------------------------------------
		#endregion
	}

	/////////////////////////////////////////////////////////////////////////
}