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);
}
}
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 int CalculateSuitableWidth(int width, int bitMatrixWidth)
{
FixedCodeSize isize = new FixedCodeSize(width, m_QuietZoneModule);
DrawingSize dSize = isize.GetSize(bitMatrixWidth);
int gap = dSize.CodeWidth - dSize.ModuleSize * (bitMatrixWidth + 2 * (int)m_QuietZoneModule);
if (gap == 0)
{
return(width);
}
else if (dSize.CodeWidth / gap < 6)
{
return((dSize.ModuleSize + 1) * (bitMatrixWidth + 2 * (int)m_QuietZoneModule));
}
else
{
return(dSize.ModuleSize * (bitMatrixWidth + 2 * (int)m_QuietZoneModule));
}
}
private void PaintQR(string str)
{
var graphics = this.CreateGraphics();
graphics.Clear(Color.White);
if (string.IsNullOrEmpty(str))
{
graphics.DrawString("Clipboard text is empty.", SystemFonts.DefaultFont, Brushes.Black, graphics.VisibleClipBounds);
return;
}
try
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
QrCode qrCode = qrEncoder.Encode(str);
var moduleSize = new FixedCodeSize(Math.Min((int)graphics.VisibleClipBounds.Width, (int)graphics.VisibleClipBounds.Height), QuietZoneModules.Two);
GraphicsRenderer render = new GraphicsRenderer(moduleSize, Brushes.Black, Brushes.White);
render.Draw(graphics, qrCode.Matrix);
}
catch (Exception e)
{
graphics.DrawString(e.Message, SystemFonts.DefaultFont, Brushes.Black, graphics.VisibleClipBounds);
}
}
/*
* Создаёт QR код с известным текстом.
*/
static void QRcode()
{
string new_file_name = "qrTest";
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
QrCode qrCode = new QrCode();
qrEncoder.TryEncode("Hello, QRWord", out qrCode);
var fCodeSize = new FixedCodeSize(200, QuietZoneModules.Two);
fCodeSize.QuietZoneModules = QuietZoneModules.Four;
GraphicsRenderer renderer = new GraphicsRenderer(fCodeSize, Brushes.Black, Brushes.White);
MemoryStream ms = new MemoryStream();
renderer.WriteToStream(qrCode.Matrix, ImageFormat.Png, ms);
var imageTemp = new Bitmap(ms);
var image = new Bitmap(imageTemp, new Size(new Point(200, 200)));
image.Save(new_file_name + ".png", ImageFormat.Png);
}
