将图片转换为HTML的神奇方法

Peter Bromberg 提供一种方法将图片文件转换为HTML, 非常神奇。阅读原文。下面是他提供的源码

using System;

using System.Text;

using System.IO;

using System.Web;

using System.Net;

using System.Drawing ;

namespace PAB.Web.Utils

{    

    public class Image2Html

    {

        private Image2Html()

        {            

        }

 

        public static string ConvertImage( string imageUrl, int scale)

        {

            WebClient wc = new  WebClient();

            byte[] img = wc.DownloadData(imageUrl);

            if(img.Length >100000) return "<H1><font color=white>Sorry,Image too big for demo!</font></h1>";

            MemoryStream imgStream = new MemoryStream(img);

            Bitmap b = (Bitmap)Image.FromStream(imgStream);

            MemoryStream ms = new MemoryStream();

            StreamWriter SW = new StreamWriter(ms);

            SW.WriteLine("<!--%<---Clip Here-->");

            SW.WriteLine("<style>pre{letter-spacing:-4px;word-spacing:-4px;line-height:2px}</style>"); 

            SW.WriteLine("<pre><b><font size='1pt'>");    

            for(int y=0;y<b.Height;y+=scale) 

            { 

                for(int x=0;x<b.Width;x+=scale) 

                { 

                    SW.Write("<font color='#" + b.GetPixel(x,y).Name.Substring(2) + "'>"); 

                    SW.Write( ((byte)b.GetPixel(x,y).ToArgb())>>7 ); 

                    SW.Write("</font>"); 

                } 

                SW.WriteLine(); 

            } 

 

            SW.WriteLine("</font></b></pre>"); 

            SW.WriteLine("<!--%<---Clip Here-->");

            SW.Close(); 

            SW = null; 

            byte[] b2= ms.ToArray ();

            string s = System.Text.Encoding.ASCII.GetString(b2);

            return s;

        }

    }

}