/// <summary>
/// Gets the QR code containing the data of the network component.
/// </summary>
/// <returns>The QR code image.</returns>
public Bitmap GetQRCode( )
{
QrEncoder qrEncoder = new QrEncoder( ErrorCorrectionLevel.H );
byte[ ] ipBytes = IP.GetAddressBytes( );
QrCode qrCode = qrEncoder.Encode( $"{string.Join( ",", ipBytes )},{Port}" );
const int moduleSizeInPixels = 25;
GraphicsRenderer renderer = new GraphicsRenderer( new FixedModuleSize( moduleSizeInPixels, QuietZoneModules.Two ), Brushes.Black, Brushes.White );
DrawingSize dSize = renderer.SizeCalculator.GetSize( qrCode.Matrix.Width );
Bitmap bmp = new Bitmap( dSize.CodeWidth, dSize.CodeWidth );
using ( Graphics graphics = Graphics.FromImage( bmp ) )
renderer.Draw( graphics, qrCode.Matrix );
return bmp;
}
public static void RunSample2()
{
const string helloWorld = "Hello World!";
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
QrCode qrCode = qrEncoder.Encode(helloWorld);
const int moduleSizeInPixels = 5;
GraphicsRenderer renderer = new GraphicsRenderer(new FixedModuleSize(moduleSizeInPixels, QuietZoneModules.Two), Brushes.Black, Brushes.White);
Panel panel = new Panel();
Point padding = new Point(10, 16);
DrawingSize dSize = renderer.SizeCalculator.GetSize(qrCode.Matrix.Width);
panel.AutoSize = false;
panel.Size = new Size(dSize.CodeWidth, dSize.CodeWidth) + new Size(2*padding.X, 2*padding.Y);
using (Graphics graphics = panel.CreateGraphics())
{
renderer.Draw(graphics, qrCode.Matrix, padding);
}
}
Bitmap ComputeQRCode(int slice)
{
var qrEncoder = new QrEncoder(FErrorCorrectionLevel[slice]);
var qrCode = new QrCode();
if (qrEncoder.TryEncode(FText[slice], out qrCode))
{
var fc = FForeColor[slice];
var bc = FBackColor[slice];
fc = new RGBAColor(fc.B, fc.G, fc.R, fc.A);
bc = new RGBAColor(bc.B, bc.G, bc.R, bc.A);
using (var fore = new SolidBrush(fc.Color))
using (var back = new SolidBrush(bc.Color))
{
var renderer = new GraphicsRenderer(new FixedModuleSize(FPixelSize[slice], FQuietZoneModules[slice]), fore, back);
DrawingSize dSize = renderer.SizeCalculator.GetSize(qrCode.Matrix.Width);
var bmp = new Bitmap(dSize.CodeWidth, dSize.CodeWidth);
using (var g = Graphics.FromImage(bmp))
renderer.Draw(g, qrCode.Matrix);
return bmp;
}
}
else
return null;
}
/// <summary>
/// 根据文字内容等信息构建相应QRCode格式二维码图片
/// </summary>
/// <param name="content">二维码内容信息</param>
/// <param name="level">纠错级别</param>
/// <param name="width">图片宽度，如小于0则使用默认尺寸</param>
/// <param name="height">图片高度，如小于0则使用默认尺寸</param>
/// <param name="inline">内嵌图片，如为Null则不做内嵌</param>
/// <returns>二维码图片</returns>
public static Image BuildQRCode(String content, ErrorCorrectionLevel level, int width, int height, Image inline)
{
QrEncoder encoder = new QrEncoder(level);
QrCode code = null;
if (!encoder.TryEncode(content, out code))
return null;
GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(ModuleSizeInPixels, QuietZoneModules.Two), Brushes.Black, Brushes.White);
DrawingSize cSize = render.SizeCalculator.GetSize(code.Matrix.Width);
Size oSize = new Size(cSize.CodeWidth, cSize.CodeWidth) + new Size(2 * PaddingSizeInPixels, 2 * PaddingSizeInPixels);
Image img = new Bitmap(oSize.Width, oSize.Height);
using (Graphics g = Graphics.FromImage(img))
{
g.CompositingQuality = CompositingQuality.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
render.Draw(g, code.Matrix);
if (inline != null)
{
int iw = (int)(oSize.Width * InlineSizeInProportion);
int ih = (int)(oSize.Height * InlineSizeInProportion);
int il = (oSize.Width - iw) / 2;
int it = (oSize.Height - ih) / 2;
g.DrawImage(inline, it, il, iw, ih);
Pen pen = new Pen(Color.White, 1);
using (GraphicsPath path = CreateRoundedRectanglePath(new Rectangle(it - 1, il - 1, iw + 1, ih + 1), 4))
{
g.DrawPath(pen, path);
}
}
}
if (width > 0 && height > 0)
{
int w = width > 0 ? width : code.Matrix.Width;
int h = height > 0 ? height : code.Matrix.Height;
Image imgCode = new Bitmap(width, height);
using (Graphics g = Graphics.FromImage(imgCode))
{
g.CompositingQuality = CompositingQuality.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(img, 0, 0, width, height);
}
img.Dispose();
img = imgCode;
}
return img;
}
