public static List <QRCode> ExtractFrom(Image image)
{
List <QRCode> output = new List <QRCode>();
Bitmap bitmap = new Bitmap(image);
ZXing.QrCode.QRCodeReader qr = new ZXing.QrCode.QRCodeReader();
ZXing.LuminanceSource source = new ZXing.BitmapLuminanceSource(bitmap);
ZXing.Common.HybridBinarizer hybrid = new ZXing.Common.HybridBinarizer(source);
ZXing.BinaryBitmap binBitmap = new ZXing.BinaryBitmap(hybrid);
ZXing.Result[] multiresults = new ZXing.Multi.QrCode.QRCodeMultiReader().decodeMultiple(binBitmap);
if (multiresults != null && multiresults.Length > 0)
{
foreach (ZXing.Result result in multiresults)
{
QRCode qrCode = new QRCode(result.Text);
qrCode.Points = new PointF[result.ResultPoints.Length];
for (int i = 0; i < result.ResultPoints.Length; i++)
{
qrCode.Points[i] = new PointF(result.ResultPoints[i].X, result.ResultPoints[i].Y);
}
output.Add(qrCode);
}
}
ZXing.Result singleresult = qr.decode(binBitmap);
if (singleresult != null)
{
QRCode qrCode = new QRCode(singleresult.Text);
qrCode.Points = new PointF[4];
qrCode.Points[0] = new PointF(singleresult.ResultPoints[0].X, singleresult.ResultPoints[0].Y);
qrCode.Points[1] = new PointF(singleresult.ResultPoints[1].X, singleresult.ResultPoints[1].Y);
qrCode.Points[2] = new PointF(singleresult.ResultPoints[2].X, singleresult.ResultPoints[2].Y);
if (singleresult.ResultPoints.Length > 2)
{
qrCode.Points[3] = new PointF(singleresult.ResultPoints[3].X, singleresult.ResultPoints[3].Y);
}
output.Add(qrCode);
}
return(output);
}
private async void ScanQRCodeItem_Click(object sender, EventArgs e)
{
foreach (Screen screen in Screen.AllScreens)
{
using (var fullImage = new System.Drawing.Bitmap(screen.Bounds.Width,
screen.Bounds.Height))
{
using (var g = System.Drawing.Graphics.FromImage(fullImage))
{
g.CopyFromScreen(screen.Bounds.X,
screen.Bounds.Y,
0, 0,
fullImage.Size,
System.Drawing.CopyPixelOperation.SourceCopy);
}
int maxTry = 10;
for (int i = 0; i < maxTry; i++)
{
int marginLeft = (int)((double)fullImage.Width * i / 2.5 / maxTry);
int marginTop = (int)((double)fullImage.Height * i / 2.5 / maxTry);
var cropRect = new System.Drawing.Rectangle(marginLeft, marginTop, fullImage.Width - marginLeft * 2, fullImage.Height - marginTop * 2);
var target = new System.Drawing.Bitmap(screen.Bounds.Width, screen.Bounds.Height);
double imageScale = (double)screen.Bounds.Width / (double)cropRect.Width;
using (var g = System.Drawing.Graphics.FromImage(target))
{
g.DrawImage(fullImage, new System.Drawing.Rectangle(0, 0, target.Width, target.Height),
cropRect,
System.Drawing.GraphicsUnit.Pixel);
}
var source = new ZXing.BitmapLuminanceSource(target);
var bitmap = new ZXing.BinaryBitmap(new ZXing.Common.HybridBinarizer(source));
var reader = new ZXing.QrCode.QRCodeReader();
var result = reader.decode(bitmap);
if (result != null)
{
var splash = new QRCodeSplashForm();
if (result.Text.StartsWith("vmess://", StringComparison.OrdinalIgnoreCase))
{
var success = await controller.AddServerBySSURL(result.Text);
if (success)
{
splash.FormClosed += splash_FormClosed;
}
}
else if (result.Text.StartsWith("http://", StringComparison.OrdinalIgnoreCase) || result.Text.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
{
_urlToOpen = result.Text;
splash.FormClosed += openURLFromQRCode;
}
else
{
_urlToOpen = result.Text;
splash.FormClosed += copyFromQRCode;
}
double minX = Int32.MaxValue, minY = Int32.MaxValue, maxX = 0, maxY = 0;
foreach (ZXing.ResultPoint point in result.ResultPoints)
{
minX = Math.Min(minX, point.X);
minY = Math.Min(minY, point.Y);
maxX = Math.Max(maxX, point.X);
maxY = Math.Max(maxY, point.Y);
}
minX /= imageScale;
minY /= imageScale;
maxX /= imageScale;
maxY /= imageScale;
double margin = (maxX - minX) * 0.20f;
minX += -margin + marginLeft;
maxX += margin + marginLeft;
minY += -margin + marginTop;
maxY += margin + marginTop;
splash.Location = new System.Drawing.Point(screen.Bounds.X, screen.Bounds.Y);
splash.TargetRect = new System.Drawing.Rectangle((int)minX + screen.Bounds.X, (int)minY + screen.Bounds.Y, (int)maxX - (int)minX, (int)maxY - (int)minY);
splash.Size = new System.Drawing.Size(fullImage.Width, fullImage.Height);
splash.Show();
return;
}
}
}
}
MessageBox.Show(I18N.GetString("No QRCode found. Try to zoom in or move it to the center of the screen."));
}