public static ImageExtension GetImageExtension(CompressionAlgorithmSelected compressorAlgorithmSelected)
{
switch (compressorAlgorithmSelected)
{
case (CompressionAlgorithmSelected.WEBPAlgorithm):
return(ImageExtension.WEBP);
case (CompressionAlgorithmSelected.JPEGAlgorithm):
return(ImageExtension.JPEG);
}
return(ImageExtension.none);
}
/*
* Avvio compressione e invio
*/
private void OnButtonClickProcessImage(object sender, EventArgs e)
{
try
{
CompressionAlgorithmSelected compressionAlgorithmSelected = CompressionAlgorithmSelectedMethods.AlgorithmSelected(algorithmList.SelectedItem);
CompressImage(compressionAlgorithmSelected, Convert.ToString(qualityAlgorithmEntry.Value));
SendFileToServer(compressionAlgorithmSelected);
}
catch (Exception ex)
{
DisplayAlert("Errore", ex.Message, "OK");
}
}
/*
* Invio file al server in base ad algoritmo scelto
*/
private void SendFileToServer(CompressionAlgorithmSelected compressionAlgorithmSelected)
{
ImageExtension imageExtension = ImageExtensionMethods.GetImageExtension(compressionAlgorithmSelected);
try
{
CreateJSONFiles();
Send(imageExtension);
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}
/*
* Avvio compressione in base ad algoritmo scelto
*/
private void CompressImage(CompressionAlgorithmSelected info, string quality)
{
switch (info)
{
case CompressionAlgorithmSelected.WEBPAlgorithm:
int resultWEBP = DependencyService.Get <ICompressorAlgorithm>().CallWEBPCompressorAlgorithm(imageSource, imageCompressDirectory + ".webp", quality);
if (resultWEBP != 0)
{
throw new Exception("Errore di compressione");
}
break;
case CompressionAlgorithmSelected.JPEGAlgorithm:
if (!JPEGCompressorAlgorithm.JPEGCompressor(imageSource, imageCompressDirectory + ".jpg", Convert.ToInt32(quality)))
{
throw new Exception("Errore di compressione");
}
break;
case CompressionAlgorithmSelected.none:
throw new Exception("Errore selezione algoritmo di compressione'");
}
}
