public async Task AnalyzeSentiment_ShouldReturnPositive()
{
var sentiment = await _emotional.AnalyzeSentimentAsync("don't worry, be happy");
Assert.AreEqual(Sentiment.Positive, sentiment);
}
async void HandleProcessButtonClicked(object sender, ClickedEventArgs args)
{
// Recognize message
Report("Let me try to recognize your handwriting...", clear: true);
// Make sure to set the fill color. The service cannot handle images with alpha transparency.
var imageStream = await _padView.GetImageStreamAsync(SignaturePad.Forms.SignatureImageFormat.Png, strokeColor : Color.Black, fillColor : Color.White);
/*
* var assembly = Assembly.GetExecutingAssembly();
* var imageStream = assembly.GetManifestResourceStream("PicturePostcard.Forms.testhandwriting.jpg");
*/
var message = await _emotional.RecognizeHandwrittenTextAsync(imageStream);
imageStream.Dispose();
if (string.IsNullOrWhiteSpace(message))
{
Report("Sorry, I could not recognize this. Can you maybe try to write a bit clearer?");
return;
}
Report($"I think you wrote '{message}'. Does that mean you are...", newLine: false);
_recognizedLabel.Text = message;
// Get sentiment
var sentiment = await _emotional.AnalyzeSentimentAsync(message);
switch (sentiment)
{
case Sentiment.Unknown:
Report("well...I don't know how you feel about this!");
_sentimentLabel.Text = "I don't know how I feel today! 🤔";
_sentimentLabel.TextColor = Color.Black;
break;
case Sentiment.Normal:
Report("feeling indifferent about this?");
_sentimentLabel.Text = "I'm feeling indifferent. 😐";
_sentimentLabel.TextColor = Color.DarkGray;
break;
case Sentiment.Negative:
Report("concerned about this? No worries!");
_sentimentLabel.Text = "You better stay away. I'm angry. 😡";
_sentimentLabel.TextColor = Color.Red;
break;
case Sentiment.Positive:
Report("feeling happy?");
_sentimentLabel.Text = "All is good. I'm happy! 🤗";
_sentimentLabel.TextColor = Color.Orange;
break;
}
// Get key content
Report("Let's see what the key phrases of your message are.");
var keyPhrases = await _emotional.GetKeyPhrasesAsync(message);
string imageSearchTerm = message;
if (keyPhrases.Count <= 0)
{
Report("Sorry, I could not figure ot the key phrases.");
}
else
{
imageSearchTerm = string.Join(" ", keyPhrases);
Report($"Here's the important parts of your message: '{imageSearchTerm}'");
}
// Get a matching image.
Report("Based on these key phrases, let's find an image!");
var imageUrl = await _emotional.GetImageUrlAsync(imageSearchTerm);
if (imageUrl == null)
{
Report("Sorry, could not find an image. Showing you a Xamarin logo instead.");
_image.Source = "xamarin.png";
}
else
{
Report("I found a nice image for you!");
_image.Source = ImageSource.FromUri(new Uri(imageUrl));
}
}