private async void embedImageButton_OnClick(object sender, RoutedEventArgs e)
{
try
{
_imageResult =
await ImageEmbedder.EmbedImage(_sourceImage, _embedImage, _sourceImageFile, _embedImageFile);
EncryptedImage.Source = _imageResult;
}
catch (Exception)
{
await CustomDialog("Embedding failed try selecting new files or restarting the program.");
}
}
private async void extractImageButton_OnClick(object sender, RoutedEventArgs e)
{
try
{
var image = await ImageEmbedder.ExtractHiddenImage(
ToWriteableBitmapConverter.ConvertToWriteableBitmap(ImageDisplay),
_sourceImageFile);
_imageResult = ToWriteableBitmapConverter.ConvertToWriteableBitmap(image);
EncryptedImage.Source = _imageResult;
await CustomDialog("Next, save the image to view the hidden message!");
}
catch (Exception)
{
await CustomDialog("There are no secrets behind this image");
}
}
private async Task embedImage(ImageEmbedder imageEmbedder)
{
var copyOriBitImageFile = await this.imageToEncript.MakeCopyOfImage();
var imageToAddCopy = await this.imageUsedToEncrypt.MakeCopyOfImage();
using (var toEncryptStream = await this.imageUsedToEncrypt.OpenAsync(FileAccessMode.Read))
{
using (var fileStream = await this.imageToEncript.OpenAsync(FileAccessMode.Read))
{
var decoder = await BitmapDecoder.CreateAsync(fileStream);
var imageToUseDecoder = await BitmapDecoder.CreateAsync(toEncryptStream);
var transform = new BitmapTransform
{
ScaledWidth = Convert.ToUInt32(copyOriBitImageFile.PixelWidth),
ScaledHeight = Convert.ToUInt32(copyOriBitImageFile.PixelHeight)
};
var imageToUseTransform = new BitmapTransform
{
ScaledWidth = Convert.ToUInt32(imageToAddCopy.PixelWidth),
ScaledHeight = Convert.ToUInt32(imageToAddCopy.PixelHeight)
};
this.dpiX = decoder.DpiX;
this.dpiY = decoder.DpiY;
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
transform,
ExifOrientationMode.IgnoreExifOrientation,
ColorManagementMode.DoNotColorManage
);
var imageToUsePixelData = await imageToUseDecoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
imageToUseTransform,
ExifOrientationMode.IgnoreExifOrientation,
ColorManagementMode.DoNotColorManage
);
var sourceOriPixels = pixelData.DetachPixelData();
var sourceOfMono = imageToUsePixelData.DetachPixelData();
if (secretImageIsLargerThanSourceImage(imageToUseDecoder, decoder))
{
this.sizeErrorMessage.Visibility = Visibility.Visible;
}
else
{
this.sizeErrorMessage.Visibility = Visibility.Collapsed;
imageEmbedder.EmbedWholeImage(sourceOriPixels, decoder.PixelWidth, decoder.PixelHeight,
sourceOfMono, imageToUseDecoder.PixelWidth, imageToUseDecoder.PixelHeight);
if (this.encryptBox.IsChecked == true)
{
ImageEncrypter encrypter = new ImageEncrypter();
encrypter.EncryptImage(sourceOriPixels, decoder.PixelWidth, decoder.PixelHeight);
}
this.bitMapImage =
new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
using (var writeStream = this.bitMapImage.PixelBuffer.AsStream())
{
await writeStream.WriteAsync(sourceOriPixels, 0, sourceOriPixels.Length);
this.encrptedImage.Source = this.bitMapImage;
}
}
}
}
}
private async void embedButton_Click(object sender, RoutedEventArgs e)
{
var imageEmbedder = new ImageEmbedder();
if (this.bitsToEncryptBox.SelectedItem == null)
{
this.bitsToEncryptBox.SelectedIndex = 0;
}
if (this.rotationBox.SelectedItem == null)
{
this.rotationBox.SelectedIndex = 0;
}
if (this.imageToEncript != null && this.imageUsedToEncrypt != null ||
this.imageToEncript != null && !this.textRead.Equals(string.Empty))
{
if (this.textEncryptionRadio.IsEnabled == false)
{
await this.embedImage(imageEmbedder);
}
else
{
var copyOriBitImageFile = await this.imageToEncript.MakeCopyOfImage();
using (var fileStream = await this.imageToEncript.OpenAsync(FileAccessMode.Read))
{
var decoder = await BitmapDecoder.CreateAsync(fileStream);
var transform = new BitmapTransform
{
ScaledWidth = Convert.ToUInt32(copyOriBitImageFile.PixelWidth),
ScaledHeight = Convert.ToUInt32(copyOriBitImageFile.PixelHeight)
};
this.dpiX = decoder.DpiX;
this.dpiY = decoder.DpiY;
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
transform,
ExifOrientationMode.IgnoreExifOrientation,
ColorManagementMode.DoNotColorManage
);
var sourceOriPixels = pixelData.DetachPixelData();
this.chooseWhichBitsToEmbed(sourceOriPixels, decoder.PixelWidth, decoder.PixelHeight);
this.bitMapImage =
new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
using (var writeStream = this.bitMapImage.PixelBuffer.AsStream())
{
await writeStream.WriteAsync(sourceOriPixels, 0, sourceOriPixels.Length);
this.encrptedImage.Source = this.bitMapImage;
}
}
}
}
else
{
var imageNeedToBeLoaded = new ContentDialog
{
Title = "SomeThing Needs Loading",
Content = "A image needs to be loaded",
CloseButtonText = "Ok"
};
await imageNeedToBeLoaded.ShowAsync();
}
}
