/// <summary>
/// 生成二维码，返回位图
/// </summary>
/// <param name="input">输入的需要编码的信息字符串</param>
/// <param name="fromat">二维码格式</param>
/// <param name="CanvasWidth">画布宽度</param>
/// <param name="CanvasHeight">画布高度</param>
/// <param name="imageFormat">图像格式</param>
/// <param name="logoImageFileName">中间嵌入的 Logo 图片</param>
/// <returns></returns>
public static Bitmap CreateCode(string input, BarcodeFormat fromat, int CanvasWidth, int CanvasHeight, System.Drawing.Imaging.ImageFormat imageFormat, string logoImageFileName)
{
System.Collections.Hashtable hints = new System.Collections.Hashtable();
hints.Add(EncodeHintType.CHARACTER_SET, "utf-8");
ByteMatrix byteMatrix = new MultiFormatWriter().encode(input, fromat, CanvasWidth, CanvasHeight, hints);
int x, y;
int width = byteMatrix.Width;
int height = byteMatrix.Height;
Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
for (x = 0; x < width; x++)
{
for (y = 0; y < height; y++)
{
bmap.SetPixel(x, y, byteMatrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("0xFF000000") : ColorTranslator.FromHtml("0xFFFFFFFF"));
}
}
if (String.IsNullOrEmpty(logoImageFileName.Trim()) || (!System.IO.File.Exists(logoImageFileName)))
{
return(bmap);
}
// 加图片水印
System.Drawing.Image logo = System.Drawing.Image.FromFile(logoImageFileName);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmap);
// 设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
// 设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
// 清空画布并以透明背景色填充
//g.Clear(System.Drawing.Color.Transparent);
// 计算 Logo 的范围
x = (width - logo.Width) / 2;
y = (height - logo.Height) / 2;
//在指定位置并且按指定大小绘制原图片的指定部分
g.DrawImage(logo, new System.Drawing.Rectangle(x, y, logo.Width, logo.Height), 0, 0, logo.Width, logo.Height, System.Drawing.GraphicsUnit.Pixel);
logo.Dispose();
g.Dispose();
return(bmap);
}
public static Bitmap Encode(string content, int width = 350, int height = 350)
{
com.google.zxing.common.ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height);
int matrixWidth = byteMatrix.Width;
int matrixHeight = byteMatrix.Height;
Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
bmap.SetPixel(x, y, byteMatrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("0xFF000000") : ColorTranslator.FromHtml("0xFFFFFFFF"));
}
}
return(bmap);
}
private Bitmap qrcode(string content, int width, int height)
{
Color fgColor = System.Drawing.Color.Black; //前景色
Color bgColor = Color.White; //背景色
Hashtable hints = new Hashtable();
hints.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //容错能力
hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8"); //字符集
ByteMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
Bitmap bmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
bmap.SetPixel(x, y, matrix.get_Renamed(x, y) != -1 ? fgColor : bgColor);
}
}
return(bmap);
}
