private double getNextLeftOffset(SimpleCircleAdorner _ovElement, UIElement _orElement, Canvas _canv, Point startPoint)
{
var currentPosition = Mouse.GetPosition(_canv);
var currentPositionMovedOverlay = Mouse.GetPosition(_ovElement);
double clickDistToBorderOverlay = currentPositionMovedOverlay.X;
if (clickDistToBorderOverlay > _ovElement.ActualWidth)
{
clickDistToBorderOverlay = _ovElement.ActualWidth;
}
if (clickDistToBorderOverlay < 0)
{
clickDistToBorderOverlay = 0;
}
var position = Canvas.GetLeft(_orElement) + _ovElement.LeftOffset;
var rightDistance = Canvas.GetLeft(_orElement) + _ovElement.LeftOffset + _ovElement.ActualWidth;
var maxLeftOfset = Canvas.GetLeft(_orElement);
if (_ovElement.LeftOffset < 0)
{
if (position <= 0 && (currentPosition.X - clickDistToBorderOverlay) <= 0)
{
return(0 - maxLeftOfset);
}
}
else if (_ovElement.LeftOffset > 0)
{
if ((rightDistance >= _canv.ActualWidth) && ((currentPosition.X + clickDistToBorderOverlay) >= _canv.ActualWidth))
{
return(_canv.ActualWidth - maxLeftOfset - _ovElement.ActualWidth);
}
}
else if (_ovElement.LeftOffset == 0)
{
if ((Canvas.GetLeft(_orElement) <= 0) && (currentPosition.X <= 0))
{
return(0);
}
if (((Canvas.GetLeft(_orElement) + _ovElement.ActualWidth) >= _canv.ActualWidth) && (currentPosition.X >= _canv.ActualWidth))
{
return(0);
}
}
else
{
return(currentPosition.X - startPoint.X);
}
return(currentPosition.X - startPoint.X);
}
private void DragStarted()
{
_isDragging = true;
_originalLeft = Canvas.GetLeft(_originalElement);
_originalTop = Canvas.GetTop(_originalElement);
_overlayElement = new SimpleCircleAdorner(_originalElement);
var layer = AdornerLayer.GetAdornerLayer(_originalElement);
layer.Add(_overlayElement);
}
private void DragFinished(bool cancelled)
{
Mouse.Capture(null);
if (_isDragging)
{
AdornerLayer.GetAdornerLayer(_overlayElement.AdornedElement).Remove(_overlayElement);
if (cancelled == false)
{
Canvas.SetTop(_originalElement, _originalTop + _overlayElement.TopOffset);
Canvas.SetLeft(_originalElement, _originalLeft + _overlayElement.LeftOffset);
}
_overlayElement = null;
}
_isDragging = false;
_isDown = false;
}
private double getNextTopOffset(SimpleCircleAdorner _ovElement, UIElement _orElement, Canvas _canv, Point startPoint)
{
var currentPosition = Mouse.GetPosition(_canv);
var currentPositionMovedOverlay = Mouse.GetPosition(_ovElement);
double clickDistToBorderOverlay = currentPositionMovedOverlay.Y;
if (clickDistToBorderOverlay > _ovElement.ActualHeight)
{
clickDistToBorderOverlay = _ovElement.ActualHeight;
}
if (clickDistToBorderOverlay < 0)
{
clickDistToBorderOverlay = 0;
}
var position = Canvas.GetTop(_orElement) + _ovElement.TopOffset;
var rightDistance = Canvas.GetTop(_orElement) + _ovElement.TopOffset + _ovElement.ActualHeight;
var maxLeftOfset = Canvas.GetTop(_orElement);
Console.WriteLine($"positionover {position} acthight {_canv.ActualHeight}");
if (_ovElement.TopOffset < 0)
{
if (position <= 0 && (currentPosition.Y - clickDistToBorderOverlay) <= 0)
{
Console.WriteLine($"1");
return(0 - maxLeftOfset);
}
Console.WriteLine($"0");
}
else if (_ovElement.TopOffset > 0)
{
if ((rightDistance >= _canv.ActualHeight) && ((currentPosition.Y + clickDistToBorderOverlay) >= _canv.ActualWidth))
{
Console.WriteLine($"3");
return(_canv.ActualHeight - maxLeftOfset - _ovElement.ActualHeight);
}
Console.WriteLine($"2");
}
else if (_ovElement.TopOffset == 0)
{
if ((Canvas.GetTop(_orElement) <= 0) && (currentPosition.Y <= 0))
{
Console.WriteLine($"5");
return(0);
}
if (((Canvas.GetTop(_orElement) + _ovElement.ActualHeight) >= _canv.ActualHeight) && (currentPosition.Y >= _canv.ActualHeight))
{
Console.WriteLine($"6");
return(0);
}
Console.WriteLine($"4");
}
else
{
Console.WriteLine($"7");
return(currentPosition.Y - startPoint.Y);
}
return(currentPosition.Y - startPoint.Y);
}