private void btn_File_Click(object sender, System.EventArgs e)
{
string sRes = "";
OpenFileDialog ofn = new OpenFileDialog();
if (ofn.ShowDialog() == DialogResult.OK)
{
try {
Reader barcodeReader =
new com.google.zxing.MultiFormatReader();
System.Drawing.Bitmap srcbitmap =
new System.Drawing.Bitmap(ofn.FileName.ToString()); // Make a copy of the image in the Bitmap variable
//make a grey bitmap of it
bmp_util util = new bmp_util();
srcbitmap = util.ConvertToGrayscale(srcbitmap);
RGBLuminanceSource source =
new RGBLuminanceSource(srcbitmap, srcbitmap.Width, srcbitmap.Height);
com.google.zxing.BinaryBitmap bitmap =
new com.google.zxing.BinaryBitmap(new HybridBinarizer(source));
com.google.zxing.Result result = barcodeReader.decode(bitmap);
System.Console.WriteLine(result.Text);
sRes = result.Text;
}
catch (com.google.zxing.ReaderException zex) {
sRes = zex.Message;
System.Console.WriteLine(zex.Message);
}
catch (Exception ex) {
sRes = ex.Message;
System.Console.WriteLine(ex.Message);
}
tb.Text = sRes;
}
}
public virtual void OnQrScan(com.google.zxing.Result result)
{
var builder = new AlertDialog.Builder(this);
builder.SetTitle("QR Result");
builder.SetMessage(result.Text);
using (var dlg = builder.Create())
dlg.Show();
}
public virtual void OnScan(com.google.zxing.Result result)
{
var evt = OnScanCompleted;
if (evt != null)
{
evt(result);
}
this.Finish();
}
private void drawResultPoints(Android.Graphics.Bitmap barcode, com.google.zxing.Result rawResult)
{
var points = rawResult.ResultPoints;
if (points != null && points.Length > 0)
{
var canvas = new Canvas(barcode);
Paint paint = new Paint();
paint.Color = Android.Graphics.Color.White;
paint.StrokeWidth = 3.0f;
paint.SetStyle(Paint.Style.Stroke);
var border = new RectF(2, 2, barcode.Width - 2, barcode.Height - 2);
canvas.DrawRect(border, paint);
paint.Color = Android.Graphics.Color.Purple;
if (points.Length == 2)
{
paint.StrokeWidth = 4.0f;
drawLine(canvas, paint, points[0], points[1]);
}
else if (points.Length == 4 &&
(rawResult.BarcodeFormat == BarcodeFormat.UPC_A ||
rawResult.BarcodeFormat == BarcodeFormat.EAN_13))
{
// Hacky special case -- draw two lines, for the barcode and metadata
drawLine(canvas, paint, points[0], points[1]);
drawLine(canvas, paint, points[2], points[3]);
}
else
{
paint.StrokeWidth = 10.0f;
foreach (ResultPoint point in points)
{
canvas.DrawPoint(point.X, point.Y, paint);
}
}
}
}
