// 生成二维码
public static void CreateCode(string message, string gifFileName, int width = 600, int height = 600)
{
int heig = width;
if (width > height)
{
heig = height;
width = height;
}
if (string.IsNullOrWhiteSpace(message))
{
return;
}
string dir = Path.GetDirectoryName(gifFileName);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var w = new ZXing.QrCode.QRCodeWriter();
BitMatrix b = w.encode(message, BarcodeFormat.QR_CODE, width, heig);
var zzb = new ZXing.ZKWeb.BarcodeWriter();
zzb.Options = new EncodingOptions()
{
Margin = 0,
};
Bitmap b2 = zzb.Write(b);
b2.Save(gifFileName, ImageFormat.Gif);
b2.Dispose();
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
var writer = new ZXing.QrCode.QRCodeWriter();
var matrix = writer.encode(comboBox1.Text, ZXing.BarcodeFormat.QR_CODE, 0, 0);
int scale = 10;
int www = 1 + matrix.Dimension + 1;
Bitmap pic = new Bitmap(scale * www, scale * www);
using (var cv = Graphics.FromImage(pic)) {
cv.Clear(Color.White);
for (int y = 0; y < matrix.Dimension; y++)
{
for (int x = 0; x < matrix.Dimension; x++)
{
if (matrix[x, y])
{
cv.FillRectangle(Brushes.Black,
new RectangleF(scale * (1 + x), scale * (1 + y), scale, scale)
);
}
}
}
}
pictureBox1.Image = pic;
}
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="message"></param>
/// <param name="gifFileName"></param>
/// <param name="width"></param>
/// <param name="height"></param>
public static byte[] CreateCodeEwm(string message, int width = 400, int height = 400)
{
int heig = width;
if (width > height)
{
heig = height;
width = height;
}
if (string.IsNullOrWhiteSpace(message))
{
return(null);
}
var w = new ZXing.QrCode.QRCodeWriter();
BitMatrix b = w.encode(message, BarcodeFormat.QR_CODE, width, heig);
var zzb = new ZXing.ZKWeb.BarcodeWriter
{
Options = new EncodingOptions {
Margin = 0
}
};
Bitmap bmp = zzb.Write(b);
byte[] byteArray = null;
using (MemoryStream stream = new MemoryStream())
{
bmp.Save(stream, ImageFormat.Png);
byteArray = stream.GetBuffer();
}
bmp.Dispose();
return(byteArray);
}
public static Bitmap GetQRCodeImage(string code)
{
var writer = new ZXing.QrCode.QRCodeWriter();
var encodedString = writer.encode(code, ZXing.BarcodeFormat.QR_CODE, 4, 4);
var qrCodeWriter = new ZXing.BarcodeWriter();
return(qrCodeWriter.Write(encodedString));
}
private static Image GenerateQRCode(string Content)
{
ZXing.QrCode.QRCodeWriter qrc = new ZXing.QrCode.QRCodeWriter();
ZXing.Common.BitMatrix bmx = qrc.encode(Content, ZXing.BarcodeFormat.QR_CODE, 100, 100);
ZXing.BarcodeWriter bcw = new ZXing.BarcodeWriter();
Bitmap bmp = bcw.Write(bmx);
return((Image)bmp);
}
////////////////////////////////////////////////////////////////////////
protected override BitmapOutput RenderE(QR elem, Template tpl, DataMap data)
{
var text = elem.data.Parse(data);
// generate QR
var writer = new ZXing.QrCode.QRCodeWriter();
var hints = new Dictionary <ZXing.EncodeHintType, object>();
hints[ZXing.EncodeHintType.MARGIN] = elem.margin;
switch (elem.error)
{
case QR.Error.Low: hints[ZXing.EncodeHintType.ERROR_CORRECTION] = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; break;
case QR.Error.Med: hints[ZXing.EncodeHintType.ERROR_CORRECTION] = ZXing.QrCode.Internal.ErrorCorrectionLevel.M; break;
case QR.Error.High: hints[ZXing.EncodeHintType.ERROR_CORRECTION] = ZXing.QrCode.Internal.ErrorCorrectionLevel.Q; break;
case QR.Error.Max: hints[ZXing.EncodeHintType.ERROR_CORRECTION] = ZXing.QrCode.Internal.ErrorCorrectionLevel.H; break;
}
if (text == "")
{
text = "\0";
}
var code = writer.encode(text, ZXing.BarcodeFormat.QR_CODE, 0, 0, hints);
var qr = Helper.Create(code.Dimension, code.Dimension);
for (int y = 0; y < qr.Height; ++y)
{
var row = code.getRow(y, null);
for (int x = 0; x < qr.Width; ++x)
{
var val = row.isRange(x, x + 1, true);
qr.SetPixel(x, y, val ? Color.Black : Color.White);
}
}
// generate bitmap
var size = elem.rect.CalcWH(new Vector(-1, -1));
if (size.x < 0)
{
size.x = size.y;
}
else if (size.y < 0)
{
size.y = size.x;
}
if (size.x < 0)
{
size.x = size.y = code.Height * elem.pitch;
}
else if (elem.resize == QR.Resize.None) /* do nothing */ } {
private void Encoding()
{
text.TextContent = "Generating barcode...";
var ft = Resources.GetFont(Resources.FontResources.small);
DateTime dt = DateTime.Now;
var writer = new ZXing.QrCode.QRCodeWriter();
var matrix = writer.encode("Time is " + dt, BarcodeFormat.QR_CODE, 50, 50);
var bitmap = matrix.ToBitmap(BarcodeFormat.QR_CODE, null);
Screen.DrawRectangle(Color.White, 0, 0, 0, Screen.Width, Screen.Height, 0, 0, Color.White, 0, 0,
Color.White, Screen.Width, Screen.Height, 255);
Screen.DrawImage(2, 2, bitmap, 0, 0, 49, 49);
Screen.DrawText((DateTime.Now - dt).ToString(), ft, Color.Black, 2, 70);
Screen.Flush();
Debug.Print((DateTime.Now - dt).ToString());
}
public static byte[] QRTextBytes(string data, int width = 64, bool invers = false)
{
var writer = new ZXing.QrCode.QRCodeWriter();
var hints = new Dictionary <ZXing.EncodeHintType, object>
{
{ ZXing.EncodeHintType.CHARACTER_SET, "ISO-8859-1" },
{ ZXing.EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.M }
};
var matrix = writer.encode(data, ZXing.BarcodeFormat.QR_CODE, width, width, hints);
var bytes = new List <byte>();
var y = 0;
while (y < width)
{
for (var x = 0; x < width; x++)
{
if (matrix[x, y] == true && matrix[x, y + 1] == true)
{
bytes.Add(219);
}
else if (matrix[x, y] == true && matrix[x, y + 1] == false)
{
bytes.Add(223);
}
else if (matrix[x, y] == false && matrix[x, y + 1] == true)
{
bytes.Add(220);
}
else
{
bytes.Add(32);
}
}
y += 2;
}
var result = bytes.ToArray();
if (invers)
{
for (var i = 0; i < result.Length; i++)
{
if (result[i] == 0xDB)
{
result[i] = 0x20;
}
else if (result[i] == 0x20)
{
result[i] = 0xDB;
}
else if (result[i] == 0xDC)
{
result[i] = 0xDF;
}
else if (result[i] == 0xDF)
{
result[i] = 0xDC;
}
}
}
return(result);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Start);
lista = LDbConnection.GetActualUserExpo();
var toolbar = FindViewById <Android.Support.V7.Widget.Toolbar>(Resource.Id.toolbar);
SetSupportActionBar(toolbar);
SupportActionBar.SetDisplayHomeAsUpEnabled(true);
SupportActionBar.SetDisplayShowTitleEnabled(false);
SupportActionBar.SetHomeButtonEnabled(true);
SupportActionBar.SetHomeAsUpIndicator(Resource.Drawable.ic_menu);
drawerLayout = FindViewById <Android.Support.V4.Widget.DrawerLayout>(Resource.Id.drawer_layout);
navigationView = FindViewById <Android.Support.Design.Widget.NavigationView>(Resource.Id.nav_view);
navigationView.NavigationItemSelected += HomeNavigationView_NavigationItemSelected;
var qrcode = FindViewById <Android.Widget.ImageView>(Resource.Id.Start_qrcode);
var writer = new ZXing.QrCode.QRCodeWriter();
String s = "";
if (LDbConnection.getUserType() == "Uczestnik")
{
s = "Uczestnik:" + LDbConnection.GetUser().Email;
}
else if (LDbConnection.getUserType() == "Wystawca")
{
s = "Wystawca:" + LDbConnection.GetCompany().Email;
}
ZXing.Common.BitMatrix bm = writer.encode(s, ZXing.BarcodeFormat.QR_CODE, 500, 500);
Android.Graphics.Bitmap ImageBitmap = Android.Graphics.Bitmap.CreateBitmap(500, 500, Config.Argb8888);
for (int i = 0; i < 500; i++)
{ //width
for (int j = 0; j < 500; j++)
{ //height
ImageBitmap.SetPixel(i, j, bm[i, j] ? Color.Black : Color.White);
}
}
if (ImageBitmap != null)
{
qrcode.SetImageBitmap(ImageBitmap);
}
var expo_list = FindViewById <Android.Widget.Spinner>(Resource.Id.Start_targi);
expo_list.ItemSelected += new System.EventHandler <Android.Widget.AdapterView.ItemSelectedEventArgs>(spinner_ItemSelected);
var adapter = new MyExpoSingleListViewAdapter(lista, this);
expo_list.Adapter = adapter;
var btn1 = (Button)FindViewById(Resource.Id.Start_join);
btn1.Visibility = Android.Views.ViewStates.Invisible;
btn1.Click += delegate
{
var NxtAct = new Android.Content.Intent(this, typeof(UserActivity));
StartActivity(NxtAct);
};
var button = FindViewById <Android.Widget.Button>(Resource.Id.Start_scan);
button.Click += async delegate
{
ZXing.Mobile.MobileBarcodeScanner scanner;
ZXing.Mobile.MobileBarcodeScanner.Initialize(Application);
scanner = new ZXing.Mobile.MobileBarcodeScanner();
scanner.UseCustomOverlay = false;
//We can customize the top and bottom text of the default overlay
scanner.BottomText = "Poczekaj, aż kod kreskowy będzie automatycznie zeskanowany!";
//Start scanning
var result = await scanner.Scan();
scanner.Cancel();
if (result == null)
{
scanner.Cancel();
}
else
{
scanner.Cancel();
string[] scan = result.Text.Split(':');
if (scan[0] == "Wystawca")
{
var NxtAct = new Android.Content.Intent(this, typeof(CompanyActivity));
NxtAct.PutExtra("Email", scan[1]);
NxtAct.PutExtra("expo_id", lista[select].Id);
NxtAct.PutExtra("Search", result.Text);
NxtAct.PutExtra("Show", true);
StartActivity(NxtAct);
}
else if (scan[0].Contains("Uczestnik"))
{
System.Console.WriteLine("Uczestnik");
var NxtAct = new Android.Content.Intent(this, typeof(UserActivity));
NxtAct.PutExtra("Email", scan[1]);
NxtAct.PutExtra("expo_id", lista[select].Id);
NxtAct.PutExtra("Search", result.Text);
NxtAct.PutExtra("Show", true);
StartActivity(NxtAct);
}
}
};
if (lista == null)
{
button.Visibility = Android.Views.ViewStates.Invisible;
btn1.Visibility = Android.Views.ViewStates.Visible;
}
}
/// <summary>
/// 生成二维码(320*320)
/// </summary>
/// <param name="text">文本内容</param>
/// <param name="format">保存格式</param>
/// <param name="logoImgae">Logo图片(缩放到真实二维码区域尺寸的1/6)</param>
/// <param name="keepWhiteBorderPixelVal">白边处理(负值表示不做处理，最大值不超过真实二维码区域的1/10)</param>
/// <returns></returns>
public static byte[] QRCoder(string text, SkiaSharp.SKEncodedImageFormat format, byte[] logoImgae = null, int keepWhiteBorderPixelVal = -1)
{
byte[] reval = null;
int width = 320;
int height = 320;
var qRCodeWriter = new ZXing.QrCode.QRCodeWriter();
var hints = new Dictionary <ZXing.EncodeHintType, object>();
hints.Add(ZXing.EncodeHintType.CHARACTER_SET, "utf-8");
hints.Add(ZXing.EncodeHintType.QR_VERSION, 8);
hints.Add(ZXing.EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.Q);
var bitMatrix = qRCodeWriter.encode(text, ZXing.BarcodeFormat.QR_CODE, width, height, hints);
var w = bitMatrix.Width;
var h = bitMatrix.Height;
var sKBitmap = new SkiaSharp.SKBitmap(w, h);
int blackStartPointX = 0;
int blackStartPointY = 0;
int blackEndPointX = w;
int blackEndPointY = h;
#region --绘制二维码(同时获取真实的二维码区域起绘点和结束点的坐标)--
var sKCanvas = new SkiaSharp.SKCanvas(sKBitmap);
var sKColorBlack = SkiaSharp.SKColor.Parse("000000");
var sKColorWihte = SkiaSharp.SKColor.Parse("ffffff");
sKCanvas.Clear(sKColorWihte);
bool blackStartPointIsNotWriteDown = true;
for (var y = 0; y < h; y++)
{
for (var x = 0; x < w; x++)
{
var flag = bitMatrix[x, y];
if (flag)
{
if (blackStartPointIsNotWriteDown)
{
blackStartPointX = x;
blackStartPointY = y;
blackStartPointIsNotWriteDown = false;
}
blackEndPointX = x;
blackEndPointY = y;
sKCanvas.DrawPoint(x, y, sKColorBlack);
}
else
{
//sKCanvas.DrawPoint(x, y, sKColorWihte);//不用绘制(背景是白色的)
}
}
}
sKCanvas.Dispose();
#endregion
int qrcodeRealWidth = blackEndPointX - blackStartPointX;
int qrcodeRealHeight = blackEndPointY - blackStartPointY;
#region -- 处理白边 --
if (keepWhiteBorderPixelVal > -1)//指定了边框宽度
{
var borderMaxWidth = (int)Math.Floor((double)qrcodeRealWidth / 10);
if (keepWhiteBorderPixelVal > borderMaxWidth)
{
keepWhiteBorderPixelVal = borderMaxWidth;
}
var nQrcodeRealWidth = width - keepWhiteBorderPixelVal - keepWhiteBorderPixelVal;
var nQrcodeRealHeight = height - keepWhiteBorderPixelVal - keepWhiteBorderPixelVal;
var sKBitmap2 = new SkiaSharp.SKBitmap(width, height);
var sKCanvas2 = new SkiaSharp.SKCanvas(sKBitmap2);
sKCanvas2.Clear(sKColorWihte);
//二维码绘制到临时画布上时无需抗锯齿等处理(避免文件增大)
sKCanvas2.DrawBitmap(
sKBitmap,
new SkiaSharp.SKRect
{
Location = new SkiaSharp.SKPoint {
X = blackStartPointX, Y = blackStartPointY
},
Size = new SkiaSharp.SKSize {
Height = qrcodeRealHeight, Width = qrcodeRealWidth
}
},
new SkiaSharp.SKRect
{
Location = new SkiaSharp.SKPoint {
X = keepWhiteBorderPixelVal, Y = keepWhiteBorderPixelVal
},
Size = new SkiaSharp.SKSize {
Width = nQrcodeRealWidth, Height = nQrcodeRealHeight
}
});
blackStartPointX = keepWhiteBorderPixelVal;
blackStartPointY = keepWhiteBorderPixelVal;
qrcodeRealWidth = nQrcodeRealWidth;
qrcodeRealHeight = nQrcodeRealHeight;
sKCanvas2.Dispose();
sKBitmap.Dispose();
sKBitmap = sKBitmap2;
}
#endregion
#region -- 绘制LOGO --
if (logoImgae != null && logoImgae.Length > 0)
{
SkiaSharp.SKBitmap sKBitmapLogo = SkiaSharp.SKBitmap.Decode(logoImgae);
if (!sKBitmapLogo.IsEmpty)
{
var sKPaint2 = new SkiaSharp.SKPaint
{
FilterQuality = SkiaSharp.SKFilterQuality.None,
IsAntialias = true
};
var logoTargetMaxWidth = (int)Math.Floor((double)qrcodeRealWidth / 6);
var logoTargetMaxHeight = (int)Math.Floor((double)qrcodeRealHeight / 6);
var qrcodeCenterX = (int)Math.Floor((double)qrcodeRealWidth / 2);
var qrcodeCenterY = (int)Math.Floor((double)qrcodeRealHeight / 2);
var logoResultWidth = sKBitmapLogo.Width;
var logoResultHeight = sKBitmapLogo.Height;
if (logoResultWidth > logoTargetMaxWidth)
{
var r = (double)logoTargetMaxWidth / logoResultWidth;
logoResultWidth = logoTargetMaxWidth;
logoResultHeight = (int)Math.Floor(logoResultHeight * r);
}
if (logoResultHeight > logoTargetMaxHeight)
{
var r = (double)logoTargetMaxHeight / logoResultHeight;
logoResultHeight = logoTargetMaxHeight;
logoResultWidth = (int)Math.Floor(logoResultWidth * r);
}
var pointX = qrcodeCenterX - (int)Math.Floor((double)logoResultWidth / 2) + blackStartPointX;
var pointY = qrcodeCenterY - (int)Math.Floor((double)logoResultHeight / 2) + blackStartPointY;
var sKCanvas3 = new SkiaSharp.SKCanvas(sKBitmap);
var sKPaint = new SkiaSharp.SKPaint
{
FilterQuality = SkiaSharp.SKFilterQuality.Medium,
IsAntialias = true
};
sKCanvas3.DrawBitmap(
sKBitmapLogo,
new SkiaSharp.SKRect
{
Location = new SkiaSharp.SKPoint {
X = 0, Y = 0
},
Size = new SkiaSharp.SKSize {
Height = sKBitmapLogo.Height, Width = sKBitmapLogo.Width
}
},
new SkiaSharp.SKRect
{
Location = new SkiaSharp.SKPoint {
X = pointX, Y = pointY
},
Size = new SkiaSharp.SKSize {
Height = logoResultHeight, Width = logoResultWidth
}
}, sKPaint);
sKCanvas3.Dispose();
sKPaint.Dispose();
sKBitmapLogo.Dispose();
}
else
{
sKBitmapLogo.Dispose();
}
}
#endregion
SkiaSharp.SKImage sKImage = SkiaSharp.SKImage.FromBitmap(sKBitmap);
sKBitmap.Dispose();
var data = sKImage.Encode(format, 75);
sKImage.Dispose();
reval = data.ToArray();
data.Dispose();
return(reval);
}