} //End redrawChannels
void markChannelRegions(ChannelCanvas cc)
{
cc.offScaleRegions.Children.Clear();
cc.offScaleRegions.Height = ChannelCanvas.nominalCanvasHeight;
double upperThr = ChannelCanvas.ChannelYScale / 2D;
double lowerThr = -upperThr;
bool InBadRegion = false;
double rectLeft = 0;
foreach (PointListPoint pt in cc.PointList)
{
if (pt.Y > upperThr || pt.Y < lowerThr)
{
if (!InBadRegion) //start new region
{
InBadRegion = true;
rectLeft = pt.X;
}
}
else
if (InBadRegion) //end current region
{
addNewCCRect(cc, rectLeft, pt.X);
InBadRegion = false;
}
}
Canvas.SetTop(cc.offScaleRegions, currentChannelLocation(cc._channel) * ChannelCanvas.nominalCanvasHeight);
cc.offScaleRegions.Visibility = Visibility.Visible;
}
void addNewCCRect(ChannelCanvas cc, double left, double right)
{
if (left >= right) return; //can't mark single value -- unlikely to occur
Rectangle r = new Rectangle();
r.Opacity = 0.4;
r.Fill = Brushes.Green;
r.Width = right - left;
r.Height = ChannelCanvas.nominalCanvasHeight;
Canvas.SetTop(r, 0);
Canvas.SetLeft(r, left);
cc.offScaleRegions.Children.Add(r);
}
public MainWindow()
{
bool r;
do //first get HDR file and open BDF file
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Title = "Open Header of dataset to be edited...";
dlg.DefaultExt = ".hdr"; // Default file extension
dlg.Filter = "HDR Files (.hdr)|*.hdr"; // Filter files by extension
Nullable<bool> result = dlg.ShowDialog();
if (result == null || result == false) Environment.Exit(0);
directory = System.IO.Path.GetDirectoryName(dlg.FileName); //will use to find other files in dataset
headerFileName = System.IO.Path.GetFileNameWithoutExtension(dlg.FileName);
header = (new HeaderFileReader(dlg.OpenFile())).read();
updateFlag = header.Events.ContainsKey("**ArtifactBegin"); //indicates that we are editing a dataset that has already been edited for artifacts
bdf = new BDFEDFFileReader(new FileStream(System.IO.Path.Combine(directory, header.BDFFile),
FileMode.Open, FileAccess.Read));
//make list of candidate EEG channels, so that channel selection window can use it
BDFLength = (double)bdf.NumberOfRecords * bdf.RecordDuration;
string trans = bdf.transducer(0); //here we assumne that channel 0 is an EEG channel
for (int i = 0; i < bdf.NumberOfChannels - 1; i++) //exclude Status channel
if (bdf.transducer(i) == trans) EEGChannels.Add(i);
Window1 w = new Window1(this); //open channel selection and file approval window
r = (bool)w.ShowDialog();
} while (r == false);
InitializeComponent();
Log.writeToLog("Starting EEGArtifactEditor " + Assembly.GetExecutingAssembly().GetName().Version.ToString() +
" on dataset " + headerFileName);
ViewerGrid.Width = BDFLength;
try
{
//process Events in current dataset; we have to do this now in case this is an update situation, but don't have to when we finish
Event.EventFactory.Instance(header.Events); // set up the factory, based on this Event dictionary
//and read them in
EventFileReader efr = new EventFileReader(
new FileStream(System.IO.Path.Combine(directory, header.EventFile),
FileMode.Open, FileAccess.Read)); // open Event file
foreach (InputEvent ie in efr)// read in all Events into list
events.Add(new OutputEvent(ie));
efr.Close(); //now events is list of Events in the dataset
//now set zeroTime for this BDF file, after finding an appropriate (non-"naked") Event
bool ok = false;
foreach (OutputEvent ev in events)
if (header.Events[ev.Name].IsCovered)
{
bdf.setZeroTime(ev);
ok = true;
break;
}
if (!ok)
{
ErrorWindow ew = new ErrorWindow();
ew.Message = "Unable to find a covered Event in this dataset on which to synchronize clocks. Exiting.";
ew.ShowDialog();
Log.writeToLog("Unable to synchronize clocks.");
this.Close();
}
if (updateFlag) //re-editing this dataset for artifacts
{
Event.EventFactory.Instance(header.Events); // set up the factory, based on this Event dictionary
//and read them in
OutputEvent ev;
int i = 0;
double left;
while (i < events.Count)
{
ev = events[i];
if (ev.Name == "**ArtifactBegin")
{
left = bdf.timeFromBeginningOfFileTo(ev);
events.Remove(ev);
while (i < events.Count)
{
ev = events[i];
if (ev.Name == "**ArtifactEnd")
{
MarkerCanvas.createMarkRegion(left, bdf.timeFromBeginningOfFileTo(ev));
events.Remove(ev);
break;
}
if (ev.Name == "**ArtifactBegin")
throw (new Exception("Unmatched artifact Event in Event file " +
System.IO.Path.Combine(directory, header.EventFile)));
i++;
}
}
else
i++;
}
}
//initialize the individual channel canvases
foreach (int chan in selectedEEGChannels)
{
ChannelCanvas cc = new ChannelCanvas(this, chan);
currentChannelList.Add(cc);
ViewerCanvas.Children.Add(cc);
ViewerCanvas.Children.Add(cc.offScaleRegions);
}
Title = headerFileName; //set window title
BDFFileInfo.Content = bdf.ToString();
HDRFileInfo.Content = header.ToString();
ElectrodeInputFileStream eif = new ElectrodeInputFileStream(
new FileStream(System.IO.Path.Combine(directory, header.ElectrodeFile),
FileMode.Open, FileAccess.Read)); //open Electrode file
electrodes = eif.etrPositions;
//initialize vertical gridline array; never more than 18
for (int i = 0; i < 18; i++)
{
Line l = new Line();
Grid.SetRow(l, 0);
Grid.SetColumn(l, 0);
l.Y1 = 0D;
l.HorizontalAlignment = HorizontalAlignment.Left;
l.VerticalAlignment = VerticalAlignment.Stretch;
l.IsHitTestVisible = false;
l.Stroke = Brushes.LightBlue;
l.Visibility = Visibility.Hidden;
Panel.SetZIndex(l, int.MaxValue);
VerticalGrid.Children.Add(l);
gridlines[i] = l;
}
//Initialize timer
timer.AutoReset = true;
timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
//Initialize channel information popup
Color c1 = Color.FromArgb(0xFF, 0xF8, 0xF8, 0xF8);
Color c2 = Color.FromArgb(0xFF, 0xC8, 0xC8, 0xC8);
popupTB.Background = new LinearGradientBrush(c1, c2, 45D);
popupTB.Foreground = Brushes.Black;
popupTB.Padding = new Thickness(4D);
Border b = new Border();
b.BorderThickness = new Thickness(1);
b.CornerRadius = new CornerRadius(4);
b.BorderBrush = Brushes.Tomato;
b.Margin = new Thickness(0, 0, 24, 24); //allows drop shadow to show up
b.Effect = new DropShadowEffect();
b.Child = popupTB;
channelPopup.Placement = PlacementMode.MousePoint;
channelPopup.AllowsTransparency = true;
channelPopup.Child = b;
//Initialize FOV slider
FOV.Maximum = Math.Log10(BDFLength);
FOV.Value = 1D;
FOVMax.Text = BDFLength.ToString("0");
//Note file always uses the "main" orginal dataset name, which should be the BDFFile name; this keeps notes from all levels of
//processing in the same place
noteFilePath = System.IO.Path.Combine(directory, System.IO.Path.GetFileNameWithoutExtension(header.BDFFile) + ".notes.txt");
}
catch (Exception ex)
{
ErrorWindow ew = new ErrorWindow();
ew.Message = "Error in EEGArtifactEditor initialization" + ex.Message;
ew.ShowDialog();
this.Close(); //exit
}
//from here on the program is GUI-event driven
}
