private void TeachModel_Click(object sender, EventArgs e)
{
string dataFilePath = Path.Combine(ConstantValues.KEYBOARD_DATA_FILEPATH, ConstantValues.KEYBOARD_FILE_NAME);
string decryptedFilePath = Path.Combine(ConstantValues.KEYBOARD_DATA_FILEPATH, "D_" + ConstantValues.KEYBOARD_CSV_FILE_NAME);
FileInfo file = new FileInfo(dataFilePath);
Decryptor.DecryptFile(file, decryptedFilePath);
loadingWindow.Show();
DeleteOldGeneratedFiles();
CreateModelInBackground();
}
public async Task <Boolean> Run(
String pathToFile,
CreatePdfImageTaskParams createPdfImageTaskParams,
Func <int, Stream, Task <Boolean> > pageWriter)
{
String tempFileName = null;
if (Passwords.Count > 0)
{
tempFileName =
Path.Combine(Path.GetDirectoryName(pathToFile),
Path.GetFileNameWithoutExtension(pathToFile) + "_decrypted.pdf");
if (Decryptor.DecryptFile(pathToFile, tempFileName, Passwords))
{
pathToFile = tempFileName;
}
}
using (var sourceStream = File.OpenRead(pathToFile))
{
var settings = new MagickReadSettings
{
Density = new PointD(createPdfImageTaskParams.Dpi, createPdfImageTaskParams.Dpi)
};
settings.FrameIndex = 0; // First page
settings.FrameCount = 1; // Number of pages
MagickFormat imageFormat = TranslateFormat(createPdfImageTaskParams.Format);
Logger.DebugFormat("Image format is {0}", imageFormat.ToString());
using (var images = new MagickImageCollection())
{
bool done = false;
if (!_firstDone)
{
lock (LockForInitializationIssue)
{
if (!_firstDone)
{
images.Read(sourceStream, settings);
done = true;
}
}
}
if (!done)
{
images.Read(sourceStream, settings);
}
var lastImage =
Math.Min(createPdfImageTaskParams.FromPage - 1 + createPdfImageTaskParams.Pages, images.Count) -
1;
for (int page = createPdfImageTaskParams.FromPage - 1; page <= lastImage; page++)
{
var image = images[page];
image.Format = imageFormat;
using (var ms = new MemoryStream())
{
image.Write(ms);
ms.Seek(0L, SeekOrigin.Begin);
await pageWriter(page + 1, ms).ConfigureAwait(false);
}
}
}
}
if (!String.IsNullOrEmpty(tempFileName) && File.Exists(tempFileName))
{
File.Delete(tempFileName);
}
return(true);
}