private static Image CreateQrCodeImage(string content)
{
var qrCodeWriter = new QRCodeWriter();
var byteMatrix = qrCodeWriter.Encode(content, 1, 1, null);
var width = byteMatrix.GetWidth();
var height = byteMatrix.GetHeight();
var stride = (width + 7) / 8;
var bitMatrix = new byte[stride * height];
var byteMatrixArray = byteMatrix.GetArray();
for (var y = 0; y < height; ++y)
{
var line = byteMatrixArray[y];
for (var x = 0; x < width; ++x)
{
if (line[x] != 0)
{
var offset = stride * y + x / 8;
bitMatrix[offset] |= (byte)(0x80 >> (x % 8));
}
}
}
var encodedImage = Ccittg4Encoder.Compress(bitMatrix, byteMatrix.GetWidth(), byteMatrix.GetHeight());
var qrcodeImage = Image.GetInstance(byteMatrix.GetWidth(), byteMatrix.GetHeight(), false, Image.CCITTG4, Image.CCITT_BLACKIS1, encodedImage, null);
return(qrcodeImage);
}
/// <summary>Regenerates barcode after changes in hints or code.</summary>
public virtual void Regenerate()
{
if (code != null)
{
try {
QRCodeWriter qc = new QRCodeWriter();
bm = qc.Encode(code, 1, 1, hints);
}
catch (WriterException ex) {
throw new ArgumentException(ex.Message, ex.InnerException);
}
}
}
private string GenerateQrCode(string assettagid)
{
string base64;
//iTextSharp.text.Document doc = new iTextSharp.text.Document(new iTextSharp.text.Rectangle(4.5f, 5.5f), 0.5f, 0.5f, 0, 0);
//string filepathimg = Path.Combine(Server.MapPath("~/Views/QrCode/"), assettagid + ".jpg");
ByteMatrix btm;
MemoryStream ms = null;
Bitmap bmp = null;
try
{
BarcodeQRCode qrcode = new BarcodeQRCode(assettagid, 200, 200, null);
QRCodeWriter qrwriter = new QRCodeWriter();
btm = qrwriter.Encode(assettagid, 200, 200, null);
qrcode.GetImage();
sbyte[][] imgQr = btm.GetArray();
bmp = new Bitmap(200, 200);
Graphics gpr = Graphics.FromImage(bmp);
gpr.Clear(Color.White);
for (int i = 0; i < imgQr.Length; i++)
{
for (int j = 0; j <= imgQr[i].Length - 1; j++)
{
if (imgQr[j][i] == 0)
{
gpr.FillRectangle(Brushes.Black, i, j, 1, 1);
}
else
{
gpr.FillRectangle(Brushes.White, i, j, 1, 1);
}
}
}
Response.ContentType = "image/jpeg";
//fs = new FileStream(filepathimg, FileMode.Create);
ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] byteImg = ms.ToArray();
base64 = Convert.ToBase64String(byteImg);
}
catch (Exception ex)
{
base64 = "";
string msg = ex.Message;
}
bmp.Dispose();
ms.Close();
return(base64);
}
public System.Drawing.Image Generate(string text, int px_w, int px_h, int labelspace_right, string label_text)
{
var c = new QRCodeWriter();
var matrix = c.Encode(text, px_w, px_h);
var pic = new Bitmap(px_w + 2, px_h + 2 + labelspace_right);
for (var x = 0; x < matrix.GetWidth(); ++x)
{
for (var y = 0; y < matrix.GetHeight(); ++y)
{
pic.SetPixel(x + 1, y + 1, matrix.Get(x, y) == 0 ? Color.Black : Color.White);
}
}
/* draw the frame marks */
using (var dwg = Graphics.FromImage(pic))
{
var quarter = px_w / 4;
#if DEBUG
dwg.DrawRectangle(Pens.BlanchedAlmond, 0, 0, px_w, px_h);
#endif
for (var i = 0; i < Math.Max(1, px_w / (200 / 3)); ++i)
{
dwg.DrawLines(Pens.DarkGray, new Point[] {
new Point(i, quarter - i),
new Point(i, i),
new Point(quarter - i, i)
});
dwg.DrawLines(Pens.DarkGray, new Point[] {
new Point(px_w - quarter + i, px_h + labelspace_right - i),
new Point(px_w - i, px_h + labelspace_right - i),
new Point(px_w - i, px_h + labelspace_right - quarter + i)
});
}
/* draw the label */
if (labelspace_right > 0)
{
#if DEBUG
dwg.DrawRectangle(Pens.Maroon, 0, px_h, px_w, labelspace_right);
#endif
dwg.Clip = new Region(new RectangleF(0, px_h, px_w, labelspace_right));
dwg.DrawString(label_text, SystemFonts.SmallCaptionFont, Brushes.Black, new RectangleF(0, px_h, px_w, labelspace_right), StringFormat.GenericTypographic);
}
}
pic.RotateFlip(RotateFlipType.Rotate270FlipNone);
return(pic);
}
/**
* Creates the QR barcode. The barcode is always created with the smallest possible size and is then stretched
* to the width and height given. Set the width and height to 1 to get an unscaled barcode.
* @param content the text to be encoded
* @param width the barcode width
* @param height the barcode height
* @param hints modifiers to change the way the barcode is create. They can be EncodeHintType.ERROR_CORRECTION
* and EncodeHintType.CHARACTER_SET. For EncodeHintType.ERROR_CORRECTION the values can be ErrorCorrectionLevel.L, M, Q, H.
* For EncodeHintType.CHARACTER_SET the values are strings and can be Cp437, Shift_JIS and ISO-8859-1 to ISO-8859-16.
* You can also use UTF-8, but correct behaviour is not guaranteed as Unicode is not supported in QRCodes.
* The default value is ISO-8859-1.
* @throws WriterException
*/
public BarcodeQRCode(String content, int width, int height, IDictionary <EncodeHintType, Object> hints)
{
QRCodeWriter qc = new QRCodeWriter();
bm = qc.Encode(content, width, height, hints);
}