public HttpResponseMessage GetQRImg(string wxid, string sid)
{
var wx = WXManager.Current[wxid];
if (wx == null)
{
return(Request.CreateResponse(HttpStatusCode.NotFound));
}
var s = new StudentBLL(wx.DBConnect).GetByID(sid).QueryObject;
if (s == null)
{
return(Request.CreateResponse(HttpStatusCode.NotFound));
}
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
QrCode qrCode = new QrCode();
//var temp = string.Format("{0}{1}", !string.IsNullOrEmpty(s.IDNumber) ? s.IDNumber : s.ID.PadLeft(18, ' '), s.Name);
//var base64 = Convert.ToBase64String(System.Text.ASCIIEncoding.UTF8.GetBytes(temp));
var base64 = s.ID;
qrEncoder.TryEncode(base64, out qrCode);
var renderer = new DrawingBrushRenderer(new FixedModuleSize(5, QuietZoneModules.Two));
MemoryStream ms = new MemoryStream();
renderer.WriteToStream(qrCode.Matrix, ImageFormatEnum.JPEG, ms);
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
result.Content = new ByteArrayContent(ms.ToArray());
//Inline是直接显示,attachment作为附件下载
result.Content.Headers.ContentType = new MediaTypeHeaderValue("image/jpg");
return(result);
}
void how_to_print_page_handle(object sender, PrintPageEventArgs e)
{
int h = (int)(e.PageSettings.PrintableArea.Height);
int w = (int)(e.PageSettings.PrintableArea.Width);
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);
float side = e.PageSettings.PrintableArea.Width;
side = 100; //=> 1"
if (e.PageSettings.PrintableArea.Height < e.PageSettings.PrintableArea.Width)
{
side = e.PageSettings.PrintableArea.Height;
}
float modesize = side / 100 * e.Graphics.DpiX;
QrCode qrCode = qrEncoder.Encode("0123456789");
//ISizeCalculation iSizeCal = new FixedModuleSize(2, QuietZoneModules.Zero);
// This works with the Brady on a very small label
ISizeCalculation iSizeCal = new FixedCodeSize((int)modesize - 16, QuietZoneModules.Zero);
DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(iSizeCal,
System.Windows.Media.Brushes.Black, System.Windows.Media.Brushes.White);
string test = "test1";
if (test == "test1")
{
MemoryStream mem_stream = new MemoryStream();
dRenderer.WriteToStream(qrCode.Matrix, ImageFormatEnum.BMP, mem_stream);
Bitmap bitmap = new Bitmap(mem_stream);
bitmap.SetResolution(e.Graphics.DpiX, e.Graphics.DpiY);
//Graphics graphics = Graphics.FromImage(bitmap);
e.Graphics.DrawImage(bitmap, 0, 0);
}
else
{
System.Windows.Point dpipoint = new System.Windows.Point(e.Graphics.DpiX, e.Graphics.DpiY);
BitmapSource bitmapsource = dRenderer.WriteToBitmapSource(qrCode.Matrix, dpipoint);
BitmapFrame bitmapframe = BitmapFrame.Create(bitmapsource);
BitmapEncoder bitmapencoder = new BmpBitmapEncoder();
bitmapencoder.Frames.Add(bitmapframe);
MemoryStream mem_stream = new MemoryStream();
bitmapencoder.Save(mem_stream);
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(mem_stream);
e.Graphics.DrawImage(bitmap, 0, 0);
}
}
private void buttonSave_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = @"PNG (*.png)|*.png|Bitmap (*.bmp)|*.bmp|Encapsuled PostScript (*.eps)|*.eps";
saveFileDialog.FileName = Path.GetFileName(GetFileNameProposal());
saveFileDialog.DefaultExt = "png";
if (saveFileDialog.ShowDialog() != DialogResult.OK)
{
return;
}
if (saveFileDialog.FileName.EndsWith("eps"))
{
BitMatrix matrix = qrCodeGraphicControl1.GetQrMatrix();
// Initialize the EPS renderer
var renderer = new EncapsulatedPostScriptRenderer(
new FixedModuleSize(6, QuietZoneModules.Two), // Modules size is 6/72th inch (72 points = 1 inch)
new EPSFormColor(Color.Black), new EPSFormColor(Color.White));
using (var file = File.OpenWrite(saveFileDialog.FileName))
{
renderer.WriteToStream(matrix, file);
}
}
else
{
DrawingBrushRenderer dRender = new DrawingBrushRenderer(new FixedModuleSize(5, QuietZoneModules.Four));
BitMatrix matrix = qrCodeGraphicControl1.GetQrMatrix();
using (FileStream stream = new FileStream(saveFileDialog.FileName, FileMode.Create))
{
dRender.WriteToStream(matrix, ImageFormatEnum.PNG, stream);
}
//WriteableBitmapRenderer wRender = new WriteableBitmapRenderer(new FixedModuleSize(15, QuietZoneModules.Four));
//BitMatrix matrix = qrCodeGraphicControl1.GetQrMatrix();
//using (FileStream stream = new FileStream(saveFileDialog.FileName, FileMode.Create))
//{
// wRender.WriteToStream(matrix, ImageFormatEnum.PNG, stream);
//}
//GraphicsRenderer gRender = new GraphicsRenderer(new FixedModuleSize(15, QuietZoneModules.Four));
//BitMatrix matrix = qrCodeGraphicControl1.GetQrMatrix();
//using (FileStream stream = new FileStream(saveFileDialog.FileName, FileMode.Create))
//{
// gRender.WriteToStream(matrix, ImageFormat.Png, stream);
//}
}
}
Bitmap encodeToBitMap(string data,
double dimension_inches,
float dpi_x = 600,
float dpi_y = 600,
ErrorCorrectionLevel correction_level = ErrorCorrectionLevel.L,
QuietZoneModules quite_zone = QuietZoneModules.Zero
)
{
QrEncoder qrEncoder = new QrEncoder(correction_level);
QrCode qrCode = qrEncoder.Encode(data);
// Calculate number of pixels. Note we use dpi in x direction
// but we should probably use whichever is lowest
int pixels = (int)(dimension_inches * dpi_x);
// Check whether we have enough space
//if (pixels < qrCode.Matrix.Width)
//throw new Exception("Too small");
ISizeCalculation iSizeCal = new FixedCodeSize(pixels, quite_zone);
DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(iSizeCal, System.Windows.Media.Brushes.Black, System.Windows.Media.Brushes.White);
//DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(iSizeCal, System.Windows.Media.Brushes.Black, System.Windows.Media.Brushes.LightGray);
MemoryStream mem_stream = new MemoryStream();
dRenderer.WriteToStream(qrCode.Matrix, ImageFormatEnum.BMP, mem_stream);
Bitmap bitmap = new Bitmap(mem_stream);
bitmap.SetResolution(dpi_x, dpi_y);
// A different way to do the same. Just incase the bitmap.SetResolution function does not work
//System.Windows.Point dpipoint = new System.Windows.Point(dpi, dpi);
//BitmapSource bitmapsource = dRenderer.WriteToBitmapSource(qrCode.Matrix, dpipoint);
//MemoryStream outStream = new MemoryStream();
//BitmapEncoder bitmapencoder = new BmpBitmapEncoder();
//BitmapFrame bitmapframe = BitmapFrame.Create(bitmapsource);
//bitmapencoder.Frames.Add(bitmapframe);
//bitmapencoder.Save(outStream);
//Bitmap bitmap = new System.Drawing.Bitmap(outStream);
return(bitmap);
}
private void SaveImageFile(double imageSize)
{
SaveFileDialog saveFileDIalog = new SaveFileDialog();
saveFileDIalog.Filter =
@"PNG (.png)|*.png|Bitmap (.bmp)|*.bmp|JEPG (.jpg)|*.jpg|GIF (.gif)|*.gif|TIFF (.tiff)|*.tiff|WDP (.wdp)|*.wdp|EPS (.eps)|*.eps";
saveFileDIalog.DefaultExt = ".png";
saveFileDIalog.FileName = "QrCode";
saveFileDIalog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
if (saveFileDIalog.ShowDialog() == false)
{
return;
}
string fileName = saveFileDIalog.FileName;
ImageFormatEnum imageFormat = ImageFormatEnum.PNG;
string fileNameCheck = saveFileDIalog.FileName.ToLower();
if (fileNameCheck.EndsWith("png"))
{
imageFormat = ImageFormatEnum.PNG;
}
else if (fileNameCheck.EndsWith("bmp"))
{
imageFormat = ImageFormatEnum.BMP;
}
else if (fileNameCheck.EndsWith("jpg"))
{
imageFormat = ImageFormatEnum.JPEG;
}
else if (fileNameCheck.EndsWith("gif"))
{
imageFormat = ImageFormatEnum.GIF;
}
else if (fileNameCheck.EndsWith("tiff"))
{
imageFormat = ImageFormatEnum.TIFF;
}
else if (fileNameCheck.EndsWith("wdp"))
{
imageFormat = ImageFormatEnum.WDP;
}
else if (fileNameCheck.EndsWith("eps"))
{
Properties.Settings.Default.SaveSize = imageSize;
Properties.Settings.Default.Save();
CreateEPSImage(imageSize, fileName);
return;
}
else
{
return;
}
Properties.Settings.Default.SaveSize = imageSize;
Properties.Settings.Default.Save();
int pixelSize = (int)(imageSize * 96);
DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(new FixedCodeSize(pixelSize, QuietZoneModules.Two),
new SolidColorBrush(DarkColor), new SolidColorBrush(LightColor));
using (FileStream stream = new FileStream(fileName, FileMode.Create))
{
dRenderer.WriteToStream(QrMatrix, imageFormat, stream);
}
}