public override void Abort()
{
if (IsDragging)
{
IsDragging = false;
if (_ghostAdorner != null)
{
RemoveAdorner(_ghostAdorner);
_ghostAdorner = null;
}
_atomList = null;
}
if (EditViewModel.SelectedItems.Any())
{
EditViewModel.ClearSelection();
CurrentStatus = DefaultText;
}
if (_lassoAdorner != null)
{
DisposeLasso();
}
_initialTarget = null;
_mouseTrack = null;
CurrentEditor.ReleaseMouseCapture();
CurrentStatus = DefaultText;
}
private void CurrentEditor_PreviewMouseMove(object sender, MouseEventArgs e)
{
var pos = Mouse.GetPosition(CurrentEditor);
Vector shift; //how much we want to shift the objects by
if (MouseIsDown(e) & !IsDragging)
{
CurrentStatus = "Draw around atoms and bonds to select.";
if (_initialTarget == null)
{
if (_mouseTrack == null)
{
_mouseTrack = new PointCollection();
}
StreamGeometry outline = null;
if (!RectMode)
{
//just add the most recent point to the track
_mouseTrack.Add(pos);
}
else
{
//build a rectangle
_mouseTrack.Clear();
_mouseTrack.Add(StartPoint);
_mouseTrack.Add(new Point(pos.X, StartPoint.Y));
_mouseTrack.Add(new Point(pos.X, pos.Y));
_mouseTrack.Add(new Point(StartPoint.X, pos.Y));
}
outline = GetPolyGeometry();
if (_lassoAdorner == null)
{
_lassoAdorner = new LassoAdorner(CurrentEditor, outline);
}
if (Mouse.Captured != CurrentEditor)
{
Mouse.Capture(CurrentEditor);
}
_lassoAdorner.Outline = outline;
}
else
{
var target = CurrentObject(e);
if (_initialTarget != target)
{
IsDragging = true;
}
}
}
//we're dragging an object around
if (MouseIsDown(e) & IsDragging)
{
if (_initialTarget is Bond b &&
EditViewModel.SelectionType == SelectionTypeCode.Bond &&
EditViewModel.SelectedItems.Count == 1) //i.e. we have one bond selected
{
CurrentStatus = "Drag bond to reposition.";
_atomList = new List <Atom> {
b.StartAtom, b.EndAtom
};
shift = pos - StartPoint;
var tt = new TranslateTransform(shift.X, shift.Y);
_shift = new TransformGroup();
_shift.Children.Add(tt);
}
else //we're dragging an atom
{
RemoveGhost();
DragAtom(pos);
}
RemoveGhost();
_ghostAdorner = new PartialGhostAdorner(EditViewModel, _atomList, _shift);
}
private void CurrentEditor_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
dynamic currentObject = CurrentObject(e);
if (IsDragging)
{
if (_atomList != null && _atomList.Any())
{
EditViewModel.DoTransform(_shift, _atomList);
_atomList[0].Parent.UpdateVisual();
}
IsDragging = false;
if (_ghostAdorner != null)
{
RemoveAdorner(_ghostAdorner);
_ghostAdorner = null;
}
_atomList = null;
}
else
{
//did we go up on the target we went down on?
if ((currentObject != null) & (currentObject == _initialTarget))
{
//select it
DoSelectionClick(e);
}
else if (_initialTarget != null && EditViewModel.SelectedItems.Contains(_initialTarget))
{
DoSelectionClick(e);
}
if (_lassoAdorner != null)
{
_lassoHits = new List <object>();
GatherSelection(_lassoAdorner.Outline);
_lassoHits = _lassoHits.Distinct().ToList();
EditViewModel.AddToSelection(_lassoHits);
}
if (EditViewModel.SelectedItems.Any())
{
CurrentStatus = ActiveSelText;
}
if (_lassoAdorner != null)
{
DisposeLasso();
}
}
_initialTarget = null;
_mouseTrack = null;
CurrentEditor.ReleaseMouseCapture();
CurrentEditor.Focus();
var al = AdornerLayer.GetAdornerLayer(CurrentEditor);
al.Update();
CurrentStatus = DefaultText;
}
