private void CalculateLabels()
{
lblFileSize.Content = sourceBitmap.FileSize;
lblMaxCapacity.Content = sourceBitmap.GetMaxCapacity();
lblUsedCapacity.Content = tbInput.Text.Length;
lblRemainingCapacity.Content = (sourceBitmap.GetMaxCapacity() - tbInput.Text.Length);
lblTotalWrittenBits.Content = tbInput.Text.Length * 8;
lblChangeInR.Content = Stego.CalculateChange(sourceBitmap.RedChannel, Stego.StringToByteArray(tbInput.Text));
lblChangeInG.Content = Stego.CalculateChange(sourceBitmap.GreenChannel, Stego.StringToByteArray(tbInput.Text));
lblChangeInB.Content = Stego.CalculateChange(sourceBitmap.BlueChannel, Stego.StringToByteArray(tbInput.Text));
}
private void Ofd_FileOk(object sender, System.ComponentModel.CancelEventArgs e)
{
sourceBitmap = new StegoBitmap(ofd.FileName);
imgSource.Source = GetSource(sourceBitmap.GetImage());
Channel?result = Stego.HasHiddenValue(sourceBitmap);
if (result.HasValue)
{
tbInput.Text = Stego.GetHiddenValue(sourceBitmap, result.Value);
}
else
{
CalculateLabels();
}
}
private void BtnHide_Click(object sender, RoutedEventArgs e)
{
Channel channel;
if (((ComboBoxItem)cmbChannel.SelectedItem).Content.ToString() == "Otomatik")
{
int changeInRed = Stego.CalculateChange(sourceBitmap.RedChannel, Stego.StringToByteArray(tbInput.Text));
int changeInGreen = Stego.CalculateChange(sourceBitmap.GreenChannel, Stego.StringToByteArray(tbInput.Text));
int changeInBlue = Stego.CalculateChange(sourceBitmap.BlueChannel, Stego.StringToByteArray(tbInput.Text));
int min = changeInRed;
if (changeInGreen < min)
{
min = changeInGreen;
}
if (changeInBlue < min)
{
min = changeInBlue;
}
if (min == changeInRed)
{
channel = Channel.R;
}
else if (min == changeInGreen)
{
channel = Channel.G;
}
else
{
channel = Channel.B;
}
}
else
{
channel = (Channel)(cmbChannel.SelectedIndex - 1);
}
modifiedBitmap = new StegoBitmap(Stego.Hide(sourceBitmap, tbInput.Text, channel));
imgModified.Source = GetSource(modifiedBitmap.GetImage());
DrawHistogram(sourceBitmap, modifiedBitmap);
}
