/// <summary>
/// Test decode program initialization
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Event arguments</param>
private void OnLoad(object sender, EventArgs e)
{
// program title
Text = "QRCodeDecoderDemo - " + QRDecoder.VersionNumber + " \u00a9 2013-2018 Uzi Granot. All rights reserved.";
#if DEBUG
// current directory
string CurDir = Environment.CurrentDirectory;
string WorkDir = CurDir.Replace("bin\\Debug", "Work");
if (WorkDir != CurDir && Directory.Exists(WorkDir))
{
Environment.CurrentDirectory = WorkDir;
}
// open trace file
QRCodeTrace.Open("QRCodeDecoderTrace.txt");
QRCodeTrace.Write("QRCodeDecoderDemo");
#endif
// create decoder
QRCodeDecoder = new QRDecoder();
// resize window
OnResize(sender, e);
return;
}
private void OnLoadImage(object sender, EventArgs e)
{
// get file name to decode
OpenFileDialog Dialog = new OpenFileDialog
{
Filter = "Image Files(*.png;*.jpg;*.gif;*.tif)|*.png;*.jpg;*.gif;*.tif;*.bmp)|All files (*.*)|*.*",
Title = "Load QR Code Image",
InitialDirectory = Directory.GetCurrentDirectory(),
RestoreDirectory = true,
FileName = string.Empty
};
// display dialog box
if (Dialog.ShowDialog() != DialogResult.OK)
{
return;
}
// clear parameters
ImageFileLabel.Text = Dialog.FileName;
// disable buttons
LoadImageButton.Enabled = false;
// dispose previous image
if (QRCodeInputImage != null)
{
QRCodeInputImage.Dispose();
}
// load image to bitmap
QRCodeInputImage = new Bitmap(Dialog.FileName);
// trace
#if DEBUG
QRCodeTrace.Format("****");
QRCodeTrace.Format("Decode image: {0} ", Dialog.FileName);
QRCodeTrace.Format("Image width: {0}, Height: {1}", QRCodeInputImage.Width, QRCodeInputImage.Height);
#endif
// decode image
byte[][] DataByteArray = QRCodeDecoder.ImageDecoder(QRCodeInputImage);
// display ECI value
ECIValueLabel.Text = QRCodeDecoder.ECIAssignValue >= 0 ? QRCodeDecoder.ECIAssignValue.ToString() : null;
// convert results to text
DataTextBox.Text = QRCodeResult(DataByteArray);
// enable buttons
LoadImageButton.Enabled = true;
// force repaint
Invalidate();
return;
}
private void QRCodeTimer_Tick(object sender, EventArgs e)
{
QRCodeTimer.Enabled = false;
Bitmap QRCodeImage;
try
{
QRCodeImage = VideoCamera.SnapshotSourceImage();
// trace
#if DEBUG
QRCodeTrace.Format("Image width: {0}, Height: {1}", QRCodeImage.Width, QRCodeImage.Height);
#endif
}
catch (Exception EX)
{
DataTextBox.Text = "Decode exception.\r\n" + EX.Message;
QRCodeTimer.Enabled = true;
return;
}
// decode image
byte[][] DataByteArray = Decoder.ImageDecoder(QRCodeImage);
string Text = QRCodeResult(DataByteArray);
// dispose bitmap
QRCodeImage.Dispose();
// we have no QR code
if (Text.Length == 0)
{
QRCodeTimer.Enabled = true;
return;
}
VideoCamera.PauseGraph();
DataTextBox.Text = Text;
ResetButton.Enabled = true;
if (IsValidUri(DataTextBox.Text))
{
GoToUriButton.Enabled = true;
}
return;
}
/// <summary>
/// Program initialization
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Event arguments</param>
private void OnLoad(object sender, EventArgs e)
{
// program title
Text = "QRCodeVideoDecoder - " + QRDecoder.VersionNumber + " \u00a9 2013-2018 Uzi Granot. All rights reserved.";
#if DEBUG
// current directory
string CurDir = Environment.CurrentDirectory;
string WorkDir = CurDir.Replace("bin\\Debug", "Work");
if (WorkDir != CurDir && Directory.Exists(WorkDir))
{
Environment.CurrentDirectory = WorkDir;
}
// open trace file
QRCodeTrace.Open("QRCodeVideoDecoderTrace.txt");
QRCodeTrace.Write(Text);
#endif
// disable reset button
ResetButton.Enabled = false;
GoToUriButton.Enabled = false;
// get an array of web camera devices
DsDevice[] CameraDevices = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice);
// make sure at least one is available
if (CameraDevices == null || CameraDevices.Length == 0)
{
MessageBox.Show("No video cameras in this computer");
Close();
return;
}
// select the first camera
DsDevice CameraDevice = CameraDevices[0];
// Device moniker
IMoniker CameraMoniker = CameraDevice.Moniker;
// get a list of frame sizes available
FrameSize[] FrameSizes = Camera.GetFrameSizeList(CameraMoniker);
// make sure there is at least one frame size
if (FrameSizes == null || FrameSizes.Length == 0)
{
MessageBox.Show("No video cameras in this computer");
Close();
return;
}
// test if our frame size is available
int Index;
for (Index = 0; Index < FrameSizes.Length &&
(FrameSizes[Index].Width != FrameSize.Width || FrameSizes[Index].Height != FrameSize.Height); Index++)
{
;
}
// select first frame size
if (Index == FrameSizes.Length)
{
FrameSize = FrameSizes[0];
}
// Set selected camera to camera control with default frame size
// Create camera object
VideoCamera = new Camera(PreviewPanel, CameraMoniker, FrameSize);
// create QR code decoder
Decoder = new QRDecoder();
// resize window
OnResize(sender, e);
// create timer
QRCodeTimer = new Timer();
QRCodeTimer.Interval = 200;
QRCodeTimer.Tick += QRCodeTimer_Tick;
QRCodeTimer.Enabled = true;
return;
}
