public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "image/jpg";
context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
context.Response.BufferOutput = false;
string strCaptcha = context.Request.QueryString["c"].ToString();
/*using (var stream = new MemoryStream())
{
using (var bmp = new Bitmap(IMAGE_WIDTH, IMAGE_HEIGHT))
{
using (Graphics g = Graphics.FromImage(bmp))
{
using (var font = new Font(FONT_FAMILY, 1f))
{
g.Clear(_background);
SizeF finalSize;
SizeF testSize = g.MeasureString(strCaptcha, font);
float bestFontSize = Math.Min(IMAGE_WIDTH / testSize.Width, IMAGE_HEIGHT / testSize.Height)
* 0.95f;
using (var finalFont = new Font(FONT_FAMILY, bestFontSize))
{
finalSize = g.MeasureString(strCaptcha, finalFont);
}
g.PageUnit = GraphicsUnit.Point;
var textTopLeft = new PointF(
(IMAGE_WIDTH - finalSize.Width) / 2, (IMAGE_HEIGHT - finalSize.Height) / 2);
using (var path = new GraphicsPath())
{
path.AddString(
strCaptcha,
new FontFamily(FONT_FAMILY),
0,
bestFontSize,
textTopLeft,
StringFormat.GenericDefault);
g.SmoothingMode = SmoothingMode.HighQuality;
g.FillPath(_foreground, path);
g.Flush();
bmp.Save(stream, ImageFormat.Png);
stream.Seek(0, SeekOrigin.Begin);
}
}
}
}
}*/
// Generate image
CaptchaImage ci = new CaptchaImage(strCaptcha, Color.White, 120, 50);
// Return
ci.Image.Save(context.Response.OutputStream, ImageFormat.Jpeg);
// Dispose
ci.Dispose();
}
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "image/jpeg";
context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
context.Response.BufferOutput = false;
// Get text
string s = "No Text";
if (context.Request.QueryString["c"] != null &&
context.Request.QueryString["c"] != "")
{
string enc = context.Request.QueryString["c"].ToString();
// space was replaced with + to prevent error
enc = enc.Replace(" ", "+");
try
{
s = Encryptor.Decrypt(enc, "srgerg$%^bg", Convert.FromBase64String("srfjuoxp"));
}
catch { }
}
// Get dimensions
int w = 120;
int h = 50;
// Width
if (context.Request.QueryString["w"] != null &&
context.Request.QueryString["w"] != "")
{
try
{
w = Convert.ToInt32(context.Request.QueryString["w"]);
}
catch { }
}
// Height
if (context.Request.QueryString["h"] != null &&
context.Request.QueryString["h"] != "")
{
try
{
h = Convert.ToInt32(context.Request.QueryString["h"]);
}
catch { }
}
// Color
Color Bc = Color.White;
if (context.Request.QueryString["bc"] != null &&
context.Request.QueryString["bc"] != "")
{
try
{
string bc = context.Request.QueryString["bc"].ToString().Insert(0, "#");
Bc = ColorTranslator.FromHtml(bc);
}
catch { }
}
// Generate image
CaptchaImage ci = new CaptchaImage(s, Bc, w, h);
// Return
ci.Image.Save(context.Response.OutputStream, ImageFormat.Jpeg);
// Dispose
ci.Dispose();
}