private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var combobox = (ComboBox)sender;
//handle selection of item from combobox
switch (combobox.SelectedItem.ToString().Split(new[] { ": " }, StringSplitOptions.None).Last())
{
case "Czerwony":
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramTools.HistogramR);
HistogramRed.Fill = Brushes.Red;
_option = 0;
break;
case "Zielony":
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramTools.HistogramG);
HistogramRed.Fill = Brushes.Green;
_option = 1;
break;
case "Niebieski":
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramTools.HistogramB);
HistogramRed.Fill = Brushes.Blue;
_option = 2;
break;
case "Uśredniony":
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramTools.HistogramU);
HistogramRed.Fill = Brushes.Gray;
_option = 3;
break;
}
PreviewImageUpdate();
}
private void PreviewImageUpdate()
{
try
{
//get lut for stretching - preview image
var lut = HistogramTools.GetLutStretching(int.Parse(TextBoxMin.Text), int.Parse(TextBoxMax.Text));
//set new image after histogram stretching
PreviewImage.Source = HistogramTools.StretchHistogram(lut, _option);
//recalculate histogram after stretching
CalculateHistograms();
//update polygon graphs for visual representation of histograms
switch (_option)
{
case 0:
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramR);
break;
case 1:
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramG);
break;
case 2:
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramB);
break;
case 3:
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramU);
break;
}
}
catch (Exception e)
{
Debug.WriteLine(e.StackTrace);
}
}
private void InitHandle()
{
HistogramRed.Points = HistogramWindow.ConvertToPointCollection(HistogramTools.HistogramR);
}