/// <summary>
/// Sets the size of the thumbnail base on the size parameter.
/// </summary>
/// <param name="size">The size parameter.</param>
private void SetSize(string size)
{
int sizeVal;
if (!Int32.TryParse(size.Trim(), System.Globalization.NumberStyles.Integer, null, out sizeVal))
sizeVal = (int)ThumbnailSizeType.Small;
try
{
this._sizeType = (ThumbnailSizeType)sizeVal;
}
catch
{
this._sizeType = ThumbnailSizeType.Small;
}
}
/// <summary>
/// Main interface for reacting to the Thumbnailer request.
/// </summary>
/// <param name="context"></param>
protected override void HandleRequest(HttpContext context)
{
if (string.IsNullOrEmpty(context.Request.QueryString[SIZE_PARAM]))
this._sizeType = ThumbnailSizeType.Small;
else
this.SetSize(context.Request.QueryString[SIZE_PARAM]);
if ((string.IsNullOrEmpty(context.Request.QueryString[IMG_PARAM])) ||
(!this.IsValidImage(context.Request.QueryString[IMG_PARAM])))
{
this.GetDefaultImage(context);
}
else
{
string file = context.Request.QueryString[IMG_PARAM].Trim().ToLower().Replace("\\", "/");
if (file.IndexOf("/") != 0)
file = "/" + file;
if (!File.Exists(context.Server.MapPath("~" + file)))
this.GetDefaultImage(context);
else
{
using (System.Drawing.Image im = System.Drawing.Image.FromFile(context.Server.MapPath("~" + file)))
using (System.Drawing.Image tn = this.CreateThumbnail(im))
{
tn.Save(context.Response.OutputStream, this._formatType);
}
}
}
}
