public static void InitOption(VerificationCodeOption _option)
{
if (_option != null)
{
lock (typeof(VerificationCodeFactory))
{
Option = _option;
}
}
}
public static IApplicationBuilder UseVerificationCode(this IApplicationBuilder builder, Action <VerificationCodeOption> optionSet)
{
if (optionSet == null)
{
throw new Exception("VerificationCodeOption 不能为空");
}
var option = new VerificationCodeOption();
optionSet(option);
VerificationCodeFactory.InitOption(option);
return(builder.UseMiddleware <VerificationCodeMiddleware>());
}
private static IVerificationCodeProvider FilterProvider(object objectType, VerificationCodeOption option)
{
int len = providerList.Count;
var list = providerList.Values.ToList();;
for (int i = len - 1; i >= 0; i--)
{
var provider = list[i](option);
if (provider.CanHandle(objectType))
{
return(provider);
}
}
return(new DefaultVerificationCodeProvider(option));
}
public ICodeModel CreateImage(List <string> keys, VerificationCodeOption option)
{
var imageModel = new DefaultCodeModel();
if (keys?.Any() == true)
{
if (option == null)
{
throw new Exception("请先初始化配置");
}
Bitmap Img = null;
Graphics g = null;
MemoryStream ms = null;
Image imageStream = null;
Random random = new Random();
try
{
var fileList = Directory.GetFiles(option.ImagePath);
int imageCount = fileList.Length;
if (imageCount == 0)
{
throw new Exception("背景图片不能为空");
}
int imageRandom = random.Next(1, imageCount);
string randomfile = fileList[imageRandom];
imageStream = Image.FromFile(randomfile);
Img = new Bitmap(imageStream, option.ImageWidth, option.ImageHeight);
g = Graphics.FromImage(Img);
int codelength = keys.Count;
int checkQty = random.Next(option.DeafaultCheckQty, codelength);
for (int i = 0; i < codelength; i++)
{
int cindex = random.Next(option.PenColor.Count);
int findex = random.Next(option.FontFamilyName.Count);
Font f = new Font(option.FontFamilyName[findex], option.FontSize, FontStyle.Bold);
Brush b = new SolidBrush(option.PenColor[cindex]);
int y = random.Next(option.ImageHeight);
if (y > (option.ImageHeight - 30))
{
y = y - 60;
}
int x = option.ImageWidth / (i + 1);
if ((option.ImageWidth - x) < 50)
{
x = option.ImageWidth - 60;
}
string word = keys[i];
if (imageModel.CodeList.Count < checkQty)
{
imageModel.CodeList.Add(new CodePoint()
{
Word = word,
X = x,
Y = y
});
}
g.DrawString(word, f, b, x, y);
}
ms = new MemoryStream();
Img.Save(ms, ImageFormat.Jpeg);
imageModel.ImageBase64String = "data:image/jpg;base64," + Convert.ToBase64String(ms.GetBuffer());
}
finally
{
imageStream.Dispose();
g.Dispose();
Img.Dispose();
ms.Dispose();
}
}
return(imageModel);
}
public DefaultVerificationCodeProvider(VerificationCodeOption _option)
{
option = _option;
CodeGenerate = new DefaultCodeGenerate(_option);
VerificationCode = new DeafultVerificationCode();
}
public ICodeModel CreateImage(List <string> keys, VerificationCodeOption option)
{
var imageModel = new TextCodeModel {
Wrods = keys
};
if (keys?.Any() == true)
{
if (option == null)
{
throw new Exception("请先初始化配置");
}
Bitmap Img = null;
Graphics g = null;
MemoryStream ms = null;
Random random = new Random();
try
{
Img = new Bitmap(option.ImageWidth, option.ImageHeight);
g = Graphics.FromImage(Img);
g.Clear(Color.White);
int lineCount = random.Next(3, 6);
for (int i = 0; i < lineCount; i++)
{
var r1 = random.Next(3, 6);
Point[] pArr = new Point[r1];
var lineWd = Img.Width / r1;
for (int j = 0; j < r1; j++)
{
pArr[j].X = (lineWd * j) + 10;
pArr[j].Y = random.Next(Img.Height);
}
var cindex = random.Next(option.PenColor.Count);
var p = new Pen(option.PenColor[cindex], 2.5f);
g.DrawCurve(p, pArr, 0.5F);
}
int codelength = keys.Count;
var wd = option.ImageWidth / codelength;
for (int i = 0; i < codelength; i++)
{
int cindex = random.Next(option.PenColor.Count);
int findex = random.Next(option.FontFamilyName.Count);
Font f = new Font(option.FontFamilyName[findex], option.FontSize, FontStyle.Bold);
Brush b = new SolidBrush(option.PenColor[cindex]);
int y = random.Next(option.ImageHeight - f.Height);
int wx = wd * (i + 1) > (option.ImageWidth - wd) ? (option.ImageWidth - wd) : wd * (i + 1);
int x = random.Next(wd * i, wx);
string word = keys[i];
g.DrawString(word, f, b, x, y);
}
g.DrawRectangle(new Pen(Color.Black), 0, 0, Img.Width - 1, Img.Height - 1);
ms = new MemoryStream();
Img.Save(ms, ImageFormat.Jpeg);
imageModel.ImageBase64String = "data:image/jpg;base64," + Convert.ToBase64String(ms.GetBuffer());
}
finally
{
g.Dispose();
Img.Dispose();
ms.Dispose();
}
}
return(imageModel);
}
public DefaultCodeGenerate(VerificationCodeOption _option)
{
option = _option;
}