public override void TouchesEnded(NSSet touches, UIEvent evt)
{
// obtain the location of the touch
var touch = touches.AnyObject as UITouch;
var touchLocation = touch.LocationInView(this);
// something may have happened (clear) during the stroke
if (currentPath != null)
{
if (HasMovedFarEnough(currentPath, touchLocation.X, touchLocation.Y))
{
// add it to the current path
currentPath.Path.AddLineTo(touchLocation);
currentPath.GetPoints().Add(touchLocation);
}
// obtain the smoothed path, and add it to the old paths
var smoothed = PathSmoothing.SmoothedPathWithGranularity(currentPath, 4);
paths.Add(smoothed);
}
// clear the current path
currentPath = null;
// update the dirty rectangle
UpdateBounds(touchLocation);
SetNeedsDisplay();
// we are done with drawing
OnStrokeCompleted();
}
private void OnPointerReleased(object sender, PointerRoutedEventArgs e)
{
if (!IsInputEnabled)
{
return;
}
OnPointerMoved(sender, e);
// add the current path and points to their respective lists.
var smoothed = PathSmoothing.SmoothedPathWithGranularity(currentPath, 4);
paths.Add(smoothed);
// reset the drawing
currentPath = null;
tempPathShape.Tag = null;
tempPathShape.Data = new GeometryGroup();
// replace the temp path with a smoothed one
var pathShape = new Path {
Data = smoothed.Path, Tag = smoothed
};
SetPathProperties(pathShape);
Children.Add(pathShape);
// we are done with drawing
OnStrokeCompleted();
}
public static IEnumerable <Point> GetPoints(this InkStroke stroke)
{
var empty = new Point();
var segments = stroke.GetRenderingSegments();
if (segments.Any(s => s.BezierControlPoint1 != empty || s.BezierControlPoint2 != empty))
{
// we assume strokes with bezier controls are generated by the inking
// so we know that the detail will be low - thus we smooth
return(PathSmoothing.BezierToLinear(segments, 0.1f));
}
return(segments.Select(p => p.Position));
}
private void OnMouseLost(object sender, MouseEventArgs e)
{
var curr = currentStroke;
if (curr != null)
{
var smoothed = PathSmoothing.SmoothedPathWithGranularity(curr, 20);
// swap the old path with the smoothed one
inkPresenter.Strokes.Remove(curr);
inkPresenter.Strokes.Add(smoothed);
currentStroke = null;
}
OnStrokeCompleted();
}
private void TouchesEnded(MotionEvent e)
{
TouchesMoved(e, false);
// add the current path and points to their respective lists.
var smoothed = PathSmoothing.SmoothedPathWithGranularity(currentPath, 20);
paths.Add(smoothed);
// reset the drawing
currentPath = null;
// update the dirty rectangle
Invalidate(DirtyRect);
// we are done with drawing
OnStrokeCompleted();
}
private void TouchesEnded(MotionEvent e)
{
// something may have happened (clear) during the stroke
if (currentPath != null)
{
TouchesMoved(e, false);
// add the current path and points to their respective lists.
var smoothed = PathSmoothing.SmoothedPathWithGranularity(currentPath, 2);
paths.Add(smoothed);
}
// reset the drawing
currentPath = null;
// update the dirty rectangle
Invalidate(DirtyRect);
// we are done with drawing
OnStrokeCompleted();
// allow the event to propagate
Parent?.RequestDisallowInterceptTouchEvent(false);
}
public override async void TouchesEnded(NSSet touches, UIEvent evt)
{
// obtain the location of the touch
var touch = touches.AnyObject as UITouch;
var touchLocation = touch.LocationInView(this);
// something may have happened (clear) during the stroke
if (currentPath != null)
{
if (HasMovedFarEnough(currentPath, touchLocation.X, touchLocation.Y))
{
// add it to the current path
currentPath.Path.AddLineTo(touchLocation);
currentPath.GetPoints().Add(touchLocation);
}
else if (touch.TapCount == 1)
{
// Single Tap
singleTapNeeded = true;
await Task.Delay(300);
if (singleTapNeeded)
{
//CGRect r = new CGRect (touchLocation.X, touchLocation.Y, StrokeWidth, StrokeWidth);
//var c = UIBezierPath.FromOval (r);
var s = new InkStroke(new UIBezierPath(), new List <CGPoint> (), StrokeColor, StrokeWidth);
s.Path.MoveTo(touchLocation);
s.GetPoints().Add(touchLocation);
var dest = new CGPoint(touchLocation.X + StrokeWidth, touchLocation.Y + StrokeWidth);
s.Path.AddLineTo(dest);
s.GetPoints().Add(dest);
paths.Add(s);
s = new InkStroke(new UIBezierPath(), new List <CGPoint> (), StrokeColor, StrokeWidth);
var src = new CGPoint(touchLocation.X + StrokeWidth, touchLocation.Y);
s.Path.MoveTo(src);
s.GetPoints().Add(src);
dest = new CGPoint(touchLocation.X, touchLocation.Y + StrokeWidth);
s.Path.AddLineTo(dest);
s.GetPoints().Add(dest);
paths.Add(s);
}
;
}
// obtain the smoothed path, and add it to the old paths
if (currentPath != null)
{
var smoothed = PathSmoothing.SmoothedPathWithGranularity(currentPath, 4);
paths.Add(smoothed);
}
}
// clear the current path
currentPath = null;
// update the dirty rectangle
UpdateBounds(touchLocation);
SetNeedsDisplay();
// we are done with drawing
OnStrokeCompleted();
}
