public static NCaptcha GenerateAndDraw(byte showCount, System.IO.Stream outStream, EnImage enImg, string SetSessionName)
{
NCaptcha code = new NCaptcha(showCount);
code.SetSessionName = SetSessionName;
code.IsSetSession = true;
EnFont font = new EnFont();
font.MyFont = enImg.ImgFont;
font.MyColor = enImg.ImgColor;
EnImage img = new EnImage();
img.ImgColor = Color.White;
;
img.Width = enImg.Width;
img.Height = enImg.Height;
code.gBitmap = code.gDrawing(EnImage.PaintShape.Link, img, font);
if (code.gBitmap != null && outStream != null)
{
code.gBitmap.Save(outStream, System.Drawing.Imaging.ImageFormat.Jpeg);
}
return(code);
}
private Bitmap gDrawing(EnImage.PaintShape ps, EnImage enImg, EnFont font)
{
Bitmap gBitmap = new Bitmap(enImg.Width, enImg.Height);
Graphics gp = Graphics.FromImage(gBitmap);
gp.Clear(enImg.ImgColor);
if (!string.IsNullOrEmpty(this.GenerateString))
{
List <EnFont> listFont = new List <EnFont>();
for (int i = 0; i < this.GenerateString.Length; i++)
{
EnFont enFont = new EnFont();
float y = float.Parse("" + ((enImg.Height / 2 - font.MyFont.Size / 2)));
//RSeed.Next((int)font.MyFont.Size, gBitmap.Height - (int)(font.MyFont.Size));
float x = i * font.MyFont.Size;
enFont.MyColor = EnObject.listColor[0];
SolidBrush shadowBrush = new SolidBrush(font.MyColor);
y = RSeed.Next((int)y, (int)font.MyFont.Size / 2);
enFont.MyPointF = new PointF(x, y);
listFont.Add(enFont);
gp.DrawString(this.GenerateString.Substring(i, 1), font.MyFont, shadowBrush, enFont.MyPointF);
}
switch (ps)
{
case EnImage.PaintShape.Link:
gp.DrawLine(new Pen(font.MyColor, 1), 0, RSeed.Next((int)(enImg.Height / 2), (int)(enImg.Height * 0.55)), enImg.Width, RSeed.Next((int)(enImg.Height / 3), (int)(enImg.Height * 0.8)));
gp.DrawLine(new Pen(font.MyColor, 1), 0, RSeed.Next((int)(enImg.Height / 2), (int)(enImg.Height * 0.50)), enImg.Width, RSeed.Next((int)(enImg.Height / 3), (int)(enImg.Height * 0.82)));
break;
case EnImage.PaintShape.Dot:
break;
case EnImage.PaintShape.Ring:
break;
default:
break;
}
gp.Save();
}
return(gBitmap);
}
/// <summary>
/// 生成随机字符串并生成图片
/// </summary>
/// <param name="showCount">字符串长度</param>
/// <param name="outStream">输出流，可以为NULL</param>
/// <param name="iformat">图片类型</param>
/// <param name="isSetSession">是否保存Session中</param>
/// <returns>返回对象</returns>
public static NCaptcha GenerateAndDraw(byte showCount, System.IO.Stream outStream, System.Drawing.Imaging.ImageFormat iformat, bool isSetSession)
{
NCaptcha code = new NCaptcha(showCount);
code.IsSetSession = isSetSession;
EnFont font = new EnFont();
font.MyFont = new Font(FontFamily.GenericSerif, 20, FontStyle.Bold, GraphicsUnit.Point);
font.MyColor = EnObject.listColor[0];
EnImage img = new EnImage();
img.ImgColor = Color.White;
;
img.Width = code.GenerateCount * (int)font.MyFont.Size;
img.Height = (int)(font.MyFont.Size) + 5;
code.gBitmap = code.gDrawing(EnImage.PaintShape.Link, img, font);
if (code.gBitmap != null && outStream != null)
{
code.gBitmap.Save(outStream, iformat);
}
return(code);
}
