private void PointerReleased()
{
var gesture = WritePadAPI.detectGesture(WritePadAPI.GEST_CUT | WritePadAPI.GEST_RETURN, _currentStroke.Points);
switch (gesture)
{
case WritePadAPI.GEST_RETURN:
InkCanvas.Children.Remove(_currentStroke);
_currentStroke.Points.Clear();
var strokes = (from object child in InkCanvas.Children select child as UIElement).ToList();
var result = RecognizeStrokes(strokes, true);
if (string.IsNullOrEmpty(result))
{
MessageBox.Show("Text could not be recognized.");
result = "";
}
RecognizedTextBox.Text = result;
return;
case WritePadAPI.GEST_CUT:
ClearInk();
return;
}
FinishStrokeDraw();
}
public override void TouchesEnded(MonoTouch.Foundation.NSSet touches, UIEvent evt)
{
base.TouchesEnded(touches, evt);
var gesture = WritePadAPI.detectGesture(WritePadAPI.GEST_CUT | WritePadAPI.GEST_RETURN, currentStroke);
if (!mMoved)
{
mX++;
}
AddPixelsXY(mX, mY, true);
mCurrStroke = -1;
mMoved = false;
strokeLen = 0;
mPath.AddLineTo(new PointF(mX, mY));
mPathList.Add(mPath);
mPath = new UIBezierPath();
mPath.LineWidth = WritePadAPI.DEFAULT_INK_WIDTH;
mPath.LineCapStyle = CGLineCap.Round;
mPath.LineJoinStyle = CGLineJoin.Round;
SetNeedsDisplay();
switch (gesture)
{
case WritePadAPI.GEST_RETURN:
if (OnReturnGesture != null)
{
mPathList.RemoveAt(mPathList.Count - 1);
WritePadAPI.recoDeleteLastStroke();
SetNeedsDisplay();
OnReturnGesture();
}
break;
case WritePadAPI.GEST_CUT:
if (OnCutGesture != null)
{
mPathList.RemoveAt(mPathList.Count - 1);
WritePadAPI.recoDeleteLastStroke();
SetNeedsDisplay();
OnCutGesture();
}
break;
}
}
private void panelCanvas_MouseUp(object sender, MouseEventArgs e)
{
var gesture = WritePadAPI.detectGesture(WritePadAPI.GEST_CUT | WritePadAPI.GEST_RETURN, polylineList[polylineList.Count - 1]);
switch (gesture)
{
case WritePadAPI.GEST_RETURN:
polylineList.RemoveAt(polylineList.Count - 1);
Refresh();
var result = RecognizeStrokes(polylineList, true);
if (string.IsNullOrEmpty(result))
{
MessageBox.Show("Text could not be recognized.");
result = "";
}
textBox1.Text = result;
return;
case WritePadAPI.GEST_CUT:
ClearInk();
return;
}
}
public async void OnCanvasPointerReleased(object sender, PointerRoutedEventArgs e, Canvas InkCanvas, TextBox RecognizedTextBox)
{
if (e.Pointer.PointerId != _currentPointerId)
{
return;
}
if (e.GetCurrentPoint(null).Properties.PointerUpdateKind == PointerUpdateKind.RightButtonReleased)
{
return;
}
var gesture = WritePadAPI.detectGesture(WritePadAPI.GEST_CUT | WritePadAPI.GEST_RETURN, _currentStroke.Points);
switch (gesture)
{
case WritePadAPI.GEST_RETURN:
InkCanvas.Children.Remove(_currentStroke);
_currentStroke.Points.Clear();
var strokes = (from object child in InkCanvas.Children select child as UIElement).ToList();
var result = RecognizeStrokes(strokes, true);
if (string.IsNullOrEmpty(result))
{
var messageBox = new MessageDialog("Text could not be recognized.");
messageBox.Commands.Add(new UICommand("Close"));
await messageBox.ShowAsync();
result = "";
}
RecognizedTextBox.Text = result;
return;
case WritePadAPI.GEST_CUT:
ClearInk(InkCanvas);
return;
}
FinishStrokeDraw(InkCanvas);
}
public override void TouchesEnded(Foundation.NSSet touches, UIEvent evt)
{
base.TouchesEnded(touches, evt);
var gesture = WritePadAPI.detectGesture(WritePadAPI.GEST_CUT | WritePadAPI.GEST_RETURN | WritePadAPI.GEST_UNDO | WritePadAPI.GEST_REDO, currentStroke);
if (!mMoved)
{
mX++;
}
AddPixelsXY(mX, mY, true);
mCurrStroke = -1;
mMoved = false;
strokeLen = 0;
mPath.AddLineTo(new CGPoint(mX, mY));
mPathList.Add(mPath);
mPath = new UIBezierPath();
mPath.LineWidth = WritePadAPI.DEFAULT_INK_WIDTH;
mPath.LineCapStyle = CGLineCap.Round;
mPath.LineJoinStyle = CGLineJoin.Round;
SetNeedsDisplay();
switch (gesture)
{
case WritePadAPI.GEST_RETURN:
if (OnReturnGesture != null)
{
mPathList.RemoveAt(mPathList.Count - 1);
WritePadAPI.recoDeleteLastStroke();
SetNeedsDisplay();
OnReturnGesture();
}
break;
case WritePadAPI.GEST_CUT:
if (OnCutGesture != null)
{
mPathList.RemoveAt(mPathList.Count - 1);
WritePadAPI.recoDeleteLastStroke();
SetNeedsDisplay();
OnCutGesture();
}
break;
case WritePadAPI.GEST_UNDO:
if (OnUndoGesture != null)
{
undoneStroke = mPathList [mPathList.Count - 1];
mPathList.RemoveAt(mPathList.Count - 1);
WritePadAPI.recoDeleteLastStroke();
SetNeedsDisplay();
OnUndoGesture();
}
break;
case WritePadAPI.GEST_REDO:
if (OnRedoGesture != null && undoneStroke != null)
{
mPathList.Add(undoneStroke);
UIColor.Blue.SetStroke();
foreach (var aMPathList in mPathList)
{
aMPathList.Stroke();
}
mPath.Stroke();
SetNeedsDisplay();
OnRedoGesture();
}
break;
}
}