private void WritingCanvas_MouseUp(object sender, MouseButtonEventArgs e)
{
if (e.ButtonState == MouseButtonState.Released)
{
Hwr.EndStroke(inkObj);
mouseDowned = false;
}
}
private void Clear()
{
int childrenCount = VisualTreeHelper.GetChildrenCount(writingCanvas);
// remove all except guideText
writingCanvas.Children.RemoveRange(1, childrenCount - 1);
Hwr.InkClear(inkObj);
}
private void WritingCanvas_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ButtonState == MouseButtonState.Pressed)
{
currentPoint = e.GetPosition(writingCanvas);
Hwr.AddPoint(inkObj, (int)currentPoint.X, (int)currentPoint.Y);
mouseDowned = true;
}
}
private String GetCandidates(IntPtr result)
{
StringBuilder candidates = new StringBuilder();
bool exit = false;
int lineSize = Hwr.GetLineSize(result);
if (lineSize == 0)
{
candidates.Append("result empty");
return(candidates.ToString());
}
for (int i = 0; i < MAX_CANDIDATES; i++)
{
for (int j = 0; j < lineSize; j++)
{
IntPtr line = Hwr.GetLine(result, j);
int blockSize = Hwr.GetBlockSize(line);
for (int k = 0; k < blockSize; k++)
{
IntPtr block = Hwr.GetBlock(line, k);
if (Hwr.GetCandidateSize(block) <= i)
{
exit = true;
break;
}
int length = 0;
candidates.Append(String.Format("[{0}] ", i + 1));
candidates.Append(Hwr.GetCandidate(block, i, ref length));
if (k + 1 < blockSize)
{
candidates.Append(" ");
}
}
if (exit)
{
break;
}
if (j + 1 < lineSize)
{
candidates.Append("\n");
}
}
if (exit)
{
break;
}
candidates.Append("\n");
}
return(candidates.ToString());
}
private void SetLanguage(int language)
{
Hwr.ClearLanguage(settingObj);
if (language == Hwr.DLANG_MATH_MIDDLE_EXPANSION)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_MATH_MIDDLE_EXPANSION, Hwr.DTYPE_MATH_EX);
}
else if (language == Hwr.DLANG_MATH_CHEMICAL)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_MATH_CHEMICAL, Hwr.DTYPE_MATH_CF);
}
Hwr.SetAttribute(settingObj);
}
private void RecognizeButton_Click(object sender, RoutedEventArgs e)
{
int status = Hwr.Recognize(inkObj, resultObj);
if (status == Hwr.ERR_SUCCESS)
{
SetCandidateText(GetCandidates(resultObj));
}
else
{
SetCandidateText("No Result");
}
ShowCandidateText(true);
Clear();
}
private void WritingCanvas_MouseMove(object sender, MouseEventArgs e)
{
if (mouseDowned && e.LeftButton == MouseButtonState.Pressed)
{
Line line = new Line();
line.Stroke = Brushes.Black;
line.StrokeThickness = 2;
line.X1 = currentPoint.X;
line.Y1 = currentPoint.Y;
line.X2 = e.GetPosition(writingCanvas).X;
line.Y2 = e.GetPosition(writingCanvas).Y;
currentPoint = e.GetPosition(writingCanvas);
writingCanvas.Children.Add(line);
Hwr.AddPoint(inkObj, (int)line.X2, (int)line.Y2);
}
}
private void RecognizeButton_Click(object sender, RoutedEventArgs e)
{
int status = Hwr.Recognize(inkObj, resultObj);
if (status == Hwr.ERR_SUCCESS)
{
String candidates = GetCandidates(resultObj);
SetCandidateText(candidates);
SetFormula(candidates.Substring(0, candidates.IndexOf('\n')));
ShowFormula(true);
}
else
{
SetCandidateText("No Result");
}
ShowCandidateText(true);
Clear();
}
private int DestroyEngine()
{
int status = Hwr.Close();
if (inkObj != IntPtr.Zero)
{
Hwr.DestroyInkObject(inkObj);
}
if (settingObj != IntPtr.Zero)
{
Hwr.DestroySettingObject(settingObj);
}
if (resultObj != IntPtr.Zero)
{
Hwr.DestroyResultObject(resultObj);
}
return(status);
}
private void SetLanguage(int language)
{
Hwr.ClearLanguage(settingObj);
if (language == Hwr.DLANG_KOREAN)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_KOREAN, Hwr.DTYPE_KOREAN | Hwr.DTYPE_UPPERCASE | Hwr.DTYPE_LOWERCASE);
}
else if (language == Hwr.DLANG_ENGLISH)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_ENGLISH, Hwr.DTYPE_UPPERCASE | Hwr.DTYPE_LOWERCASE);
}
else if (language == Hwr.DLANG_CHINA)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_CHINA, Hwr.DTYPE_SIMP);
}
else if (language == Hwr.DLANG_JAPANESE)
{
Hwr.AddLanguage(settingObj, Hwr.DLANG_JAPANESE, Hwr.DTYPE_HIRAGANA);
}
Hwr.SetAttribute(settingObj);
}
private int InitializeEngine()
{
int status = Hwr.Create("./license_key/license.key");
if (inkObj == IntPtr.Zero)
{
inkObj = Hwr.CreateInkObject();
}
if (settingObj == IntPtr.Zero)
{
settingObj = Hwr.CreateSettingObject();
}
if (resultObj == IntPtr.Zero)
{
resultObj = Hwr.CreateResultObject();
}
Hwr.SetExternalResourcePath("./hdb");
Hwr.SetRecognitionMode(settingObj, Hwr.MULTICHAR);
Hwr.SetCandidateSize(settingObj, MAX_CANDIDATES);
SetLanguage(Hwr.DLANG_MATH_MIDDLE_EXPANSION);
Hwr.SetAttribute(settingObj);
return(status);
}
private void UpdateVersion()
{
version.Text += Hwr.GetRevision();
}
