/// <summary>
/// Initializes a new instance of the <see cref="TextExtractor" /> class.
/// </summary>
/// <param name="encodedImage">The encoded image.</param>
public TextExtractor(Image encodedImage)
{
if (encodedImage == null)
{
throw new ArgumentNullException();
}
this.EncodedImage = (Bitmap)encodedImage;
this.HeaderPixel = HeaderPixel.From(this.EncodedImage.GetPixel(0, 0));
}
private void embedImage(HeaderPixel headerPixel)
{
if (headerPixel == null)
{
throw new ArgumentNullException();
}
IEmbeddor embeddor = new ImageEmbeddor(this.largePictureBox.Image, this.smallPictureBox.Image, headerPixel);
this.largePictureBox.Image = embeddor.Embed();
MessageBox.Show(@"Successfully embedded!", @"Success", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
private void decryptImage()
{
var headerPixel = HeaderPixel.From(this.EncodedImage.GetPixel(0, 0));
if (!headerPixel.IsEncrypted)
{
return;
}
var decrypter = new ImageDecryption(this.ExtractedImage);
this.ExtractedImage = decrypter.DecryptedImage;
}
private void decryptButton_Click(object sender, EventArgs e)
{
var image = (Bitmap)this.largePictureBox.Image;
var headerPixel = HeaderPixel.From(image.GetPixel(0, 0));
if (headerPixel.IsImage)
{
this.extractImage();
}
else
{
this.extractText();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageEmbeddor" /> class.
/// </summary>
/// <param name="hiderImage">The hider image.</param>
/// <param name="embedImage">The embed image.</param>
/// <param name="headerPixel">The header pixel.</param>
/// <exception cref="ArgumentNullException">
/// </exception>
public ImageEmbeddor(Image hiderImage, Image embedImage, HeaderPixel headerPixel)
{
if (hiderImage == null)
{
throw new ArgumentNullException();
}
if (embedImage == null)
{
throw new ArgumentNullException();
}
if (headerPixel == null)
{
throw new ArgumentNullException();
}
this.HiderImage = (Bitmap)hiderImage;
this.EmbedImage = (Bitmap)embedImage;
this.HeaderPixel = headerPixel;
}
/// <summary>
/// Initializes a new instance of the <see cref="TextEmbeddor" /> class.
/// </summary>
/// <param name="sourceImage">The source image.</param>
/// <param name="textToEmbed">The text to embed.</param>
/// <param name="headerPixel">The header pixel</param>
public TextEmbeddor(Image sourceImage, string textToEmbed, HeaderPixel headerPixel)
{
this.SourceImage = sourceImage;
this.MessageText = textToEmbed;
this.HeaderPixel = headerPixel;
}
