public static Color ToGray(this Color color)
{
return(UtilityWPF.ConvertToGray(color));
}
private void TakePicture_Click(object sender, RoutedEventArgs e)
{
try
{
int size;
if (!int.TryParse(txtImageSize.Text, out size))
{
MessageBox.Show("Couldn't parse image size as an integer", this.Title, MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
else if (size < 1)
{
MessageBox.Show("Size must be at least 1", this.Title, MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
if (radColor.IsChecked.Value)
{
// No need to convert in/out of bitmap source
image.Source = UtilityWPF.RenderControl(grdViewPort, size, size, true);
return;
}
// Render the control
BitmapCustomCachedBytes bitmap = null;
if (radGrayTransparent.IsChecked.Value)
{
bitmap = (BitmapCustomCachedBytes)UtilityWPF.RenderControl(grdViewPort, size, size, false, Colors.Transparent, true);
}
else if (radGrayBlack.IsChecked.Value)
{
Brush background = grdViewPort.Background;
grdViewPort.Background = Brushes.Black;
grdViewPort.UpdateLayout();
bitmap = (BitmapCustomCachedBytes)UtilityWPF.RenderControl(grdViewPort, size, size, false, Colors.Black, true);
grdViewPort.Background = background;
}
else
{
throw new ApplicationException("Unknown radio button");
}
// Convert to gray
var colors = bitmap.GetColors_Byte().
Select(o =>
{
byte gray = Convert.ToByte(UtilityWPF.ConvertToGray(o[1], o[2], o[3]));
return(new byte[] { o[0], gray, gray, gray });
}).
ToArray();
// Show it
image.Source = UtilityWPF.GetBitmap(colors, size, size);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
