/// <summary>
/// Returns barcode as <see cref="VintasoftImage"/>.
/// </summary>
public VintasoftImage GetBarcodeImage()
{
#if !REMOVE_BARCODE_SDK
return(new VintasoftImage(_writer.GetBarcodeAsBitmap(), true));
#else
return(null);
#endif
}
void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
while (!_backgroundWorker.CancellationPending)
{
_eventLog.WriteEntry(string.Format("{0}: DoWork Start", ServiceName));
// generate image with barcode
DateTime timeNow = DateTime.Now;
string imageWithBarcodePath = "";
Bitmap imageWithBarcode = null;
try
{
BarcodeWriter barcodeWriter = new BarcodeWriter();
barcodeWriter.Settings.Barcode = BarcodeType.Code39;
barcodeWriter.Settings.Value = timeNow.ToString();
barcodeWriter.Settings.Padding = 20;
imageWithBarcode = (Bitmap)barcodeWriter.GetBarcodeAsBitmap();
imageWithBarcodePath = string.Format(@"d:\barcodes\{0}.png", timeNow.Millisecond);
imageWithBarcode.Save(imageWithBarcodePath);
}
catch (Exception ex)
{
_eventLog.WriteEntry(string.Format("{0}: Barcode writing error: {1}", ServiceName, ex.Message));
}
finally
{
}
// read barcode from the image
try
{
BarcodeReader barcodeReader = new BarcodeReader();
barcodeReader.Settings.ScanBarcodeTypes = BarcodeType.Code39;
barcodeReader.Settings.ScanDirection = ScanDirection.LeftToRight;
IBarcodeInfo[] barcodeInfo = barcodeReader.ReadBarcodes(imageWithBarcode);
string result = "No barcodes found.";
if (barcodeInfo.Length != 0)
{
result = string.Format("Barcode found: {0}", barcodeInfo[0]);
}
_eventLog.WriteEntry(string.Format("{0}: {1}", ServiceName, result));
File.WriteAllText(string.Format(@"d:\barcodes\{0}.txt", timeNow.Millisecond), result);
}
catch (Exception ex)
{
_eventLog.WriteEntry(string.Format("{0}: Barcode reading error: {1}", ServiceName, ex.Message));
}
finally
{
Thread.Sleep(1000);
}
_eventLog.WriteEntry(string.Format("{0}: DoWork Finish", ServiceName));
}
}
/// <summary>
/// Updates the user interface.
/// </summary>
internal void UpdateUI()
{
// format string
string formatString;
if (BarcodeDescription == null || BarcodeDescription == "")
{
formatString = "{0}";
}
else
{
formatString = "{0} ({1})";
}
// barcode type string
string barcodeTypeString;
if (BarcodeInformation.BarcodeSubsetName == null || BarcodeInformation.BarcodeSubsetName == "")
{
barcodeTypeString = Utils.BarcodeTypeToString(BarcodeInformation.BarcodeWriterSetting.Barcode);
}
else
{
barcodeTypeString = BarcodeInformation.BarcodeSubsetName;
}
// show barcode value
_barcodeValueTextView.Text = BarcodeInformation.BarcodeValue;
_barcodeValueTextView.ScrollTo(0, 0);
// show barcode description
_barcodeDescriptionTextView.Text = string.Format(formatString, barcodeTypeString, BarcodeDescription);
_barcodeWriter.Settings = BarcodeInformation.BarcodeWriterSetting.Clone();
if (BarcodeInformation.BarcodeSubsetName != null && BarcodeInformation.BarcodeSubsetName != "")
{
((BarcodeSymbologySubset)Utils.BarcodeTypeNameToBarcodeTypes[BarcodeInformation.BarcodeSubsetName]).Encode(BarcodeInformation.BarcodeValue, _barcodeWriter.Settings);
}
try
{
// get display size
DisplayMetrics displayMetrics = new DisplayMetrics();
_barcodeViewerActivity.WindowManager.DefaultDisplay.GetMetrics(displayMetrics);
// get parameters for postal barcodes
float maxPostalBarcodeHeight = Resources.GetDimensionPixelSize(Resource.Dimension.max_postal_barcode_height);
float maxOneSymbolPostalBarcodeWidth = Resources.GetDimensionPixelSize(Resource.Dimension.max_one_symbol_postal_barcode_width);
// get optimal barcode size
Utils.GetOptimalBarcodeSize(
displayMetrics, _barcodeWriter.Settings.Barcode,
maxPostalBarcodeHeight, maxOneSymbolPostalBarcodeWidth, _barcodeWriter.Settings.Value.Length,
out _barcodeWidth, out _barcodeHeight);
if (!Utils.IsEanOrUpcaOrUpceBarcode(_barcodeWriter.Settings.Barcode))
{
_barcodeWriter.Settings.ValueVisible = false;
}
// set barcode size
_barcodeWriter.Settings.Height = _barcodeHeight;
_barcodeWriter.Settings.SetWidth(_barcodeWidth);
// set barcode text size
_barcodeWriter.Settings.ValuePaint.TextSize = Utils.GetOptimalBarcodeTextSize(_barcodeWriter.Settings.Barcode, _barcodeWidth,
Resources.GetDimensionPixelSize(Resource.Dimension.barcode_value_bitmap_default_text_size));
// draw the barcode
Bitmap barcode = _barcodeWriter.GetBarcodeAsBitmap();
BitmapDrawable previousImage = _barcodeValueImageView.Drawable as BitmapDrawable;
if (previousImage != null)
{
previousImage.Bitmap.Recycle();
}
_barcodeValueImageView.SetImageBitmap(barcode);
// save new sizes
_barcodeHeight = barcode.Height;
_barcodeWidth = barcode.Width;
}
catch (WriterSettingsException ex)
{
// dialog creater
using (AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(_barcodeViewerActivity))
{
string message = ex.Message;
// create button
dialogBuilder.SetPositiveButton(Resource.String.ok_button, (EventHandler <DialogClickEventArgs>)null);
// create dialog
AlertDialog dialog = dialogBuilder.Create();
// set dialog title
dialog.SetTitle(Resources.GetString(Resource.String.error_message_title));
// set dialog message
dialog.SetMessage(message);
// show on screen
dialog.Show();
}
}
}