private void OnCanvasMouseDown(object sender, MouseButtonEventArgs e)
{
var mp = e.GetPosition(TheCanvas);
_mouseDownX = mp.X;
if (e.ChangedButton == MouseButton.Left)
{
DimensionPoint <int> left;
DimensionPoint <int> right;
var found = _manager.TryFindDimensionPoint(_space.Dimensions[0], (float)_mouseDownX, out left, out right);
_chosenEllipses.Clear();
foreach (FrameworkElement child in TheCanvas.Children)
{
var point = child.Tag as DimensionPoint <int>;
if (point == null)
{
continue;
}
if (point == left)
{
((Ellipse)child).Fill = found ? Brushes.Red : Brushes.Orange;
_chosenEllipses.Add(((Ellipse)child));
}
if (point == right)
{
((Ellipse)child).Fill = found ? Brushes.Red : Brushes.Orchid;
_chosenEllipses.Add(((Ellipse)child));
}
if (_chosenEllipses.Count >= 2)
{
break;
}
}
}
Rectangle rect;
if (TryFindSpacePointRectangle(mp, out rect))
{
OnSpacePointMouseDown(rect, rect.Tag as SpacePoint <int>, e);
}
}
bool ISpaceManager.AddPoint <T>(Dimension <T> dimension, SpacePoint <T> sp, float position)
{
if (dimension == null || sp == null)
{
return(false);
}
MustBe.Null(sp.Dimensions[dimension.Index], () => "space point already has assigned the dimension with index=" + dimension.Index);
if (dimension.HeadDimPoint == null)
{
var dp = new DimensionPoint <T>(dimension)
{
Position = position
};
dp.HeadLink = dp.TailLink = new DimensionLink <T>(0, dp);
dp.AddPoint(sp);
dimension.HeadDimPoint = dimension.TailDimPoint = dp;
dimension.Count = 1;
return(true);
}
// try to find existing dimension point
DimensionPoint <T> left;
DimensionPoint <T> right;
if (_spaceManager.TryFindDimensionPoint(dimension, position, out left, out right))
{
// if found add the space point to it
return(left.AddPoint(sp));
}
// new head
if (left == null)
{
AppendNewHead(dimension, sp, position);
dimension.Count++;
return(true);
}
// new tail
if (right == null)
{
AppendNewTail(dimension, sp, position);
dimension.Count++;
return(true);
}
// new in between
var newPoint = new DimensionPoint <T>(dimension)
{
Position = position
};
newPoint.AddPoint(sp);
var newLink = new DimensionLink <T>(0, newPoint);
newPoint.HeadLink = newLink;
newPoint.TailLink = newLink;
left.HeadLink.AssignNext(newLink);
newLink.AssignNext(right.HeadLink);
// for fast movers do not normalize the tree
if (!sp.IsFastMover)
{
_spaceManager.TryAddLevel(dimension);
var toExtendUp = newLink.GetSiblingExtensionCandidate();
while (_spaceManager.TryExtendUp(toExtendUp, out toExtendUp))
{
_spaceManager.TryAddLevel(dimension);
}
}
dimension.Count++;
return(true);
}
