save.aspx.cs

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Web;
using umbraco;
using umbraco.cms.businesslogic.media;

namespace Decode.Umb
{
  public partial class Save : System.Web.UI.Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {
            // if the user exited the editor close the window
      if (Request.QueryString["close"] == "1") {
                closeWindow();
                return;
            }


      // get media id and media key
      if (Request.QueryString["id"] == null) return;
      string[] qry = Request.QueryString["id"].Split('|');

            int mediaId; if (!int.TryParse(qry[0], out mediaId)) return;
            string mediaKey = qry[1];


      // get media
      Media m = new Media(mediaId);
      if (m == null) return;

            // verify our hashed key matches the media's
            if (Decode.Umb.Hash.GetMediaMd5Sum(m) != mediaKey) {
                handleError();
                return;
            }


      if (Request.Files.Count > 0) {
        if (Request.Files["image"].ContentLength > 0) {

          // settings
          HttpPostedFile file   = Request.Files["image"];
          string imageType      = Request.Form["type"];
                    string mediaPath            = (GlobalSettings.FullpathToRoot + Path.GetDirectoryName(m.getProperty("umbracoFile").Value.ToString()).Replace("/", "\\") + "\\").Replace("\\\\", "\\");
                    string mediaVirUrl      = Path.GetDirectoryName(m.getProperty("umbracoFile").Value.ToString()).Replace("\\", "/") + "/";
          string mediaName      = Path.GetFileNameWithoutExtension(m.getProperty("umbracoFile").Value.ToString()) + "." + imageType;
          string savePath       = mediaPath + mediaName;
          string thumbnailPath  = mediaPath + mediaName.Replace("." + imageType, "_thumb.jpg");


          // verify the returned file is an image file
          if (imageType != "jpg" && imageType != "png" && imageType != "gif" && imageType != "bmp") {
                        handleError("The selected image type can not be saved.");
            return;
          }


          // save image
          file.SaveAs(savePath);

          // get the saved image for thumbnail use
          System.Drawing.Image image = Image.FromStream(file.InputStream);

          // create the thumbnail
          generateThumbnail(image, 100, image.Width, image.Height, thumbnailPath);

          // update media data
          m.getProperty("umbracoFile").Value      = mediaVirUrl + mediaName;
          m.getProperty("umbracoHeight").Value    = image.Height.ToString();
          m.getProperty("umbracoWidth").Value     = image.Width.ToString();
          m.getProperty("umbracoBytes").Value     = file.ContentLength.ToString();
          m.getProperty("umbracoExtension").Value = imageType;


          // reload umbraco media page and close this window
          ClientScript.RegisterStartupScript(this.GetType(), "finish", "opener.location.reload();window.close();", true);
        }
      }


            closeWindow();
    }



        private void handleError()
        {
            handleError("Ups... An unknown error occurred. The image could not be saved.");
        }

        private void handleError(string text)
        {
            string jscript = String.Format("opener.location.reload();alert('{0}');window.close();", text);
            ClientScript.RegisterStartupScript(this.GetType(), "error", jscript, true);
        }


        private void closeWindow()
        {
            ClientScript.RegisterStartupScript(this.GetType(), "error", "opener.location.reload();window.close();", true);
        }



    private void generateThumbnail(System.Drawing.Image image, int maxWidthHeight, int fileWidth, int fileHeight, string thumbnailFileName)
    {
      // Generate thumbnail
      float fx = (float)fileWidth / (float)maxWidthHeight;
      float fy = (float)fileHeight / (float)maxWidthHeight;
      // must fit in thumbnail size
      float f = Math.Max(fx, fy); //if (f < 1) f = 1;
      int widthTh = (int)Math.Round((float)fileWidth / f); int heightTh = (int)Math.Round((float)fileHeight / f);

      // fixes for empty width or height
      if (widthTh == 0)
          widthTh = 1;
      if (heightTh == 0)
          heightTh = 1;

      // Create new image with best quality settings
      Bitmap bp = new Bitmap(widthTh, heightTh);
      Graphics g = Graphics.FromImage(bp);
      g.SmoothingMode = SmoothingMode.HighQuality;
      g.InterpolationMode = InterpolationMode.HighQualityBicubic;
      g.PixelOffsetMode = PixelOffsetMode.HighQuality;

      // Copy the old image to the new and resized
      Rectangle rect = new Rectangle(0, 0, widthTh, heightTh);
      g.DrawImage(image, rect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);

      // Copy metadata
      ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
      ImageCodecInfo codec = null;
      for (int i = 0; i < codecs.Length; i++) {
        if (codecs[i].MimeType.Equals("image/jpeg"))
            codec = codecs[i];
      }

      // Set compresion ratio to 90%
      EncoderParameters ep = new EncoderParameters();
      ep.Param[0] = new EncoderParameter(Encoder.Quality, 90L);

      // Save the new image
      bp.Save(thumbnailFileName, codec, ep);
      bp.Dispose();
      g.Dispose();
    }
  }
}