/// <summary>
/// 创建二维码并保存到指定文件中
/// </summary>
/// <param name="text">待编码字符串</param>
/// <param name="size">二维码大小</param>
/// <param name="fileName">输出路径(D:\123.png)</param>
/// <returns>返回是否成功</returns>
public static bool Save(string text, int size, string fileName)
{
// 设置二维码排错率，可选L(7%)、M(15%)、Q(25%)、H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小
ErrorCorrectionLevel el = ErrorCorrectionLevel.H;
//空白区域 有zreo 也就是0 没有边框 此处还要乘以2才得到空白区域的宽度。
QuietZoneModules qzm = QuietZoneModules.Two;
//二维码大小
FixedModuleSize fms = new FixedModuleSize(size, qzm);
QrEncoder qrEncoder = new QrEncoder(el);
QrCode qrCode = null;
try
{
if (qrEncoder.TryEncode(text, out qrCode))//对内容进行编码，并保存生成的矩阵
{
GraphicsRenderer render = new GraphicsRenderer(fms, Brushes.Black, Brushes.White);
//.WriteToStream(matrix, ImageFormat.Png, stream, new Point(600, 600)); 是跟打印有关的DPI分辨率的参数，默认即可，调整对调整图片大小没有作用
using (FileStream stream = new FileStream(fileName, FileMode.Create))
{
render.WriteToStream(qrCode.Matrix, ImageFormat.Png, stream);
}
}
else
{
return(false);
}
}
catch
{
return(false);
}
return(true);
}
/// <summary>
/// 开始绘制（仅覆盖）
/// </summary>
/// <param name="text">内容文字</param>
/// <param name="pictureSize">图片大小</param>
public void Draw(string text, int pictureSize)
{
QrCode qrCode = qrEncoder.Encode(text);
FixedModuleSize moduleSize = new FixedModuleSize(pictureSize, QuietZoneModules.Zero);
GraphicsRenderer render = new GraphicsRenderer(moduleSize, darkBrush, lightBrush);
render.Draw(graphics, qrCode.Matrix);
}
private void ShowCode(Graphics g)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
QrCode qrCode = qrEncoder.Encode(str);
FixedModuleSize moduleSize = new FixedModuleSize(2, QuietZoneModules.Two);
GraphicsRenderer render = new GraphicsRenderer(moduleSize, Brushes.Black, Brushes.White);
render.Draw(g, qrCode.Matrix);
}
private void ShowCode(Graphics g)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
QrCode qrCode = qrEncoder.Encode(str);
FixedModuleSize moduleSize = new FixedModuleSize(4, QuietZoneModules.Two);
GraphicsRenderer render = new GraphicsRenderer(moduleSize, Brushes.Black, Brushes.White);
Point mP = new Point(627, 595);//设置二维码左上角的位置
render.Draw(g, qrCode.Matrix, mP);
}
public Stream QrImage(string text)
{
var ms = new MemoryStream();
ErrorCorrectionLevel Ecl = ErrorCorrectionLevel.M; //误差校正水平
string Content = text; //待编码内容
QuietZoneModules QuietZones = QuietZoneModules.Two; //空白区域
int ModuleSize = 12; //大小
var encoder = new QrEncoder(Ecl);
QrCode qr;
if (encoder.TryEncode(Content, out qr)) //对内容进行编码，并保存生成的矩阵
{
FixedModuleSize fms = new FixedModuleSize(ModuleSize, QuietZones); //Color.FromArgb(1, 127, 38, 0)
Brush darkBrush = new SolidBrush(TranslateHexToRGBColor("C8000000")); //(Color.FromArgb(127, 38, 0));
Brush lightBrush = new SolidBrush(TranslateHexToRGBColor("00ffffff")); //Brushes.Transparent;
var render = new GraphicsRenderer(fms, darkBrush, lightBrush);
render.WriteToStream(qr.Matrix, ImageFormat.Png, ms);
return(ms);
}
else
{
return(null);
}
}
void test1(PrintPageEventArgs e)
{
int x = Convert.ToInt32(e.PageSettings.PrintableArea.X);
int y = Convert.ToInt32(e.PageSettings.PrintableArea.Y);
int h = Convert.ToInt32(e.PageSettings.PrintableArea.Height);
int w = Convert.ToInt32(e.PageSettings.PrintableArea.Width);
Point dpi = new Point(e.PageSettings.PrinterResolution.X, e.PageSettings.PrinterResolution.Y);
//e.Graphics.DrawString("This is a test", new Font(FontFamily.GenericSansSerif, 12), Brushes.Blue, new PointF(0, 0));
QrEncoder qrEncoder = new QrEncoder(Gma.QrCodeNet.Encoding.ErrorCorrectionLevel.L);
ISizeCalculation iSizeCal = new FixedModuleSize(1, QuietZoneModules.Two);
//ISizeCalculation iSizeCal = new FixedCodeSize(25, QuietZoneModules.Two);
GraphicsRenderer gRenderer = new GraphicsRenderer(iSizeCal,
System.Drawing.Brushes.Black, System.Drawing.Brushes.White);
QrCode qrCode1 = qrEncoder.Encode("Victor says hi");
QrCode qrCode2 = qrEncoder.Encode("Victor says goodbye");
QrCode qrCode3 = qrEncoder.Encode("0123456789");
QrCode qrCode4 = qrEncoder.Encode("ABCDEF1234");
DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(iSizeCal,
System.Windows.Media.Brushes.Black, System.Windows.Media.Brushes.White);
DrawingBrush dBrush = dRenderer.DrawBrush(qrCode1.Matrix);
int side = w;
if (w > h)
{
side = h;
}
gRenderer.Draw(e.Graphics, qrCode1.Matrix);
var size = iSizeCal.GetSize(qrCode1.Matrix.Width);
Point offset = new Point(size.CodeWidth + 10, 0);
gRenderer.Draw(e.Graphics, qrCode2.Matrix, offset);
size = iSizeCal.GetSize(qrCode2.Matrix.Width);
offset.X += size.CodeWidth + 10;
gRenderer.Draw(e.Graphics, qrCode3.Matrix, offset);
size = iSizeCal.GetSize(qrCode3.Matrix.Width);
offset.X += size.CodeWidth + 10;
gRenderer.Draw(e.Graphics, qrCode4.Matrix, offset);
using (FileStream stream = new FileStream("test.png", FileMode.Create))
{
gRenderer.WriteToStream(qrCode1.Matrix, ImageFormat.Png, stream);
gRenderer.WriteToStream(qrCode2.Matrix, ImageFormat.Png, stream);
}
}
