private async void InkRecoTimer_Tick(object sender, object e)
{
inkRecoTimer.Stop();
int index = currentCanvas.Name.IndexOf("Canvas");
string prefix = currentCanvas.Name.Substring(0, index);
// Get strokes of the currently selected ink canvas and convert them to JSON for the request
var strokes = currentCanvas.InkPresenter.StrokeContainer.GetStrokes();
inkRecognizer.ClearStrokes();
inkRecognizer.AddStrokes(strokes);
JObject json = inkRecognizer.ConvertInkToJson();
// Recognize the strokes of the current ink canvas and convert the response JSON into an InkResponse
var response = await inkRecognizer.RecognizeAsync(json);
string responseString = await response.Content.ReadAsStringAsync();
inkResponse = JsonConvert.DeserializeObject <InkResponse>(responseString);
if (response.StatusCode == HttpStatusCode.OK)
{
var result = this.FindName($"{prefix}Result") as TextBlock;
result.Text = string.Empty;
foreach (var recoUnit in inkResponse.RecognitionUnits)
{
if (recoUnit.category == "line")
{
if (prefix == "damage")
{
result.Text += $"{recoUnit.recognizedText}\n";
}
else
{
result.Text += $"{recoUnit.recognizedText} ";
}
}
}
}
else
{
if (response.StatusCode == HttpStatusCode.Unauthorized || response.StatusCode == HttpStatusCode.NotFound)
{
await new MessageDialog("Access denied due to invalid subscription key or wrong API endpoint. Make sure to provide a valid key for an active subscription and use a correct API endpoint in the Settings page.", $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
else
{
await new MessageDialog(inkResponse.Error.message, $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
}
}
private async void RecognizeButton_Click(object sender, RoutedEventArgs e)
{
var strokes = inkCanvas.InkPresenter.StrokeContainer.GetStrokes();
if (strokes.Count > 0)
{
// Disable use of toolbar during recognition and rendering
ToggleInkToolbar();
ToggleProgressRing();
// Clear result canvas and viewable JSON before recognition and rendering of results
ViewCanvasButton_Click(null, null);
ClearJson();
// Set language code, convert ink to JSON for request, and display it
string languageCode = languageDropdown.SelectedValue.ToString();
inkRecognizer.SetLanguage(languageCode);
inkRecognizer.ClearStrokes();
inkRecognizer.AddStrokes(strokes);
JObject json = inkRecognizer.ConvertInkToJson();
requestJson.Text = FormatJson(json.ToString());
try
{
// Recognize Ink from JSON and display response
var response = await inkRecognizer.RecognizeAsync(json);
string responseString = await response.Content.ReadAsStringAsync();
inkResponse = JsonConvert.DeserializeObject <InkResponse>(responseString);
if (response.StatusCode == HttpStatusCode.OK)
{
// Generate JSON tree view and draw result on right side canvas
CreateJsonTree();
responseJson.Text = FormatJson(responseString);
var resultCanvas = this.FindName("resultCanvas") as CanvasControl;
resultCanvas.Invalidate();
}
else
{
if (response.StatusCode == HttpStatusCode.Unauthorized || response.StatusCode == HttpStatusCode.NotFound)
{
await new MessageDialog("Access denied due to invalid subscription key or wrong API endpoint. Make sure to provide a valid key for an active subscription and use a correct API endpoint in the Settings page.", $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
else
{
await new MessageDialog(inkResponse.Error.message, $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
}
}
catch (TaskCanceledException)
{
// This may occur when a user attempts to navigate to another page during recognition. In this case, we just want to continue on to the selected page
}
// Re-enable use of toolbar after recognition and rendering
ToggleInkToolbar();
ToggleProgressRing();
}
else
{
// Clear viewable JSON if there is no strokes on canvas
ClearJson();
}
}
private async void RecognizeButton_Click(object sender, RoutedEventArgs e)
{
var strokes = inkCanvas.InkPresenter.StrokeContainer.GetStrokes();
if (strokes.Count > 0)
{
// Disable use of toolbar during recognition and rendering and
// Clear result canvas and viewable JSON before recognition and rendering of results
ToggleInkToolbar();
ToggleProgressRing();
ClearJson();
// Convert ink stroke data to JSON to be sent with request
inkRecognizer.ClearStrokes();
inkRecognizer.AddStrokes(strokes);
JObject json = inkRecognizer.ConvertInkToJson();
requestJsonText.Text = FormatJson(json.ToString());
// Recognize Ink from JSON and display response
var response = await inkRecognizer.RecognizeAsync(json);
string responseString = await response.Content.ReadAsStringAsync();
inkResponse = JsonConvert.DeserializeObject <InkResponse>(responseString);
if (response.StatusCode == HttpStatusCode.OK)
{
// Generate JSON tree view and draw result on right side canvas
CreateJsonTree();
responseJsonText.Text = FormatJson(responseString);
try
{
var resultCanvas = this.FindName("resultCanvas") as CanvasControl;
resultCanvas.Invalidate();
}
catch (NullReferenceException)
{
// This occurs when the page is changed before recognition finishes.
// Since the result canvas gets disposed when navigating away it becomes null.
}
}
else
{
if (response.StatusCode == HttpStatusCode.Unauthorized || response.StatusCode == HttpStatusCode.NotFound)
{
await new MessageDialog("Access denied due to invalid subscription key or wrong API endpoint. Make sure to provide a valid key for an active subscription and use a correct API endpoint in the Settings page.", $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
else
{
await new MessageDialog(inkResponse.Error.message, $"Response Code: {inkResponse.Error.code}").ShowAsync();
}
}
// Re-enable use of toolbar after recognition and rendering
ToggleInkToolbar();
ToggleProgressRing();
}
else
{
// Clear viewable JSON if there is no strokes on canvas
ClearJson();
}
}
