private void GetConnectors(Link link, out ConnectorElement startConnectorElement, out ConnectorElement endConnectorElement)
{
startConnectorElement = (ConnectorElement)Document.FindElement(new Point(link.StartPointX, link.StartPointY));
endConnectorElement = (ConnectorElement)Document.FindElement(new Point(link.EndPointX, link.EndPointY));
if (startConnectorElement == null || endConnectorElement == null)
{
var startNode = Document.Elements.GetArray().FirstOrDefault(n => n.Id == link.StartNodeId);
var endNode = Document.Elements.GetArray().FirstOrDefault(n => n.Id == link.EndNodeId);
if (startNode != null && endNode != null)
{
var listTuples = new List <LineVariantTuple>();
foreach (var connector1 in ((NodeElement)startNode).Connectors)
{
foreach (var connector2 in ((NodeElement)endNode).Connectors)
{
listTuples.Add(new LineVariantTuple
{
StartPoint = connector1.Location,
EndPoint = connector2.Location
});
}
}
var minLengthLine = listTuples.OrderBy(l => l.Length).FirstOrDefault();
if (minLengthLine != null)
{
startConnectorElement = (ConnectorElement)Document.FindElement(minLengthLine.StartPoint);
endConnectorElement = (ConnectorElement)Document.FindElement(minLengthLine.EndPoint);
}
}
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
if (e.Button == MouseButtons.None)
{
Cursor = Cursors.Arrow;
var mousePoint = Gsc2Goc(new Point(e.X, e.Y));
if ((_resizeAction != null) &&
((Document.Action == DesignerAction.Select) ||
((Document.Action == DesignerAction.Connect) &&
_resizeAction.IsResizingLink)))
{
Cursor = _resizeAction.UpdateResizeCornerCursor(mousePoint);
}
if (Document.Action == DesignerAction.Connect)
{
var mousePointerElementTMP = Document.FindElement(mousePoint);
if (_mousePointerElement != mousePointerElementTMP)
{
if (mousePointerElementTMP is ConnectorElement)
{
_mousePointerElement = mousePointerElementTMP;
_mousePointerElement.Invalidate();
Invalidate(_mousePointerElement, true);
}
else if (_mousePointerElement != null)
{
_mousePointerElement.Invalidate();
Invalidate(_mousePointerElement, true);
_mousePointerElement = null;
}
}
}
else
{
Invalidate(_mousePointerElement, true);
_mousePointerElement = null;
}
}
if (e.Button == MouseButtons.Left)
{
var dragPoint = Gsc2Goc(new Point(e.X, e.Y));
if ((_resizeAction != null) && _resizeAction.IsResizing)
{
_resizeAction.Resize(dragPoint);
Invalidate();
}
if ((_moveAction != null) && _moveAction.IsMoving)
{
_moveAction.Move(dragPoint);
Invalidate();
}
if (_isMultiSelection || _isAddSelection)
{
var p = Gsc2Goc(new Point(e.X, e.Y));
_selectionArea.Size = new Size(p.X - _selectionArea.Location.X, p.Y - _selectionArea.Location.Y);
_selectionArea.Invalidate();
Invalidate(_selectionArea, true);
}
if (_isAddLink)
{
_selectedElement = Document.FindElement(dragPoint);
if (_selectedElement is ConnectorElement &&
Document.CanAddLink(_connStart, (ConnectorElement)_selectedElement))
{
_linkLine.Connector2 = (ConnectorElement)_selectedElement;
}
else
{
_linkLine.Connector2 = _connEnd;
}
var moveController = (IMoveController)((IControllable)_connEnd).GetController();
moveController.Move(dragPoint);
base.Invalidate();
}
}
base.OnMouseMove(e);
}
protected override void OnMouseDown(MouseEventArgs e)
{
Point mousePoint;
//ShowSelectionCorner((document.Action==DesignerAction.Select));
switch (Document.Action)
{
// SELECT
case DesignerAction.Connect:
case DesignerAction.Select:
if (e.Button == MouseButtons.Left)
{
mousePoint = Gsc2Goc(new Point(e.X, e.Y));
//Verify resize action
StartResizeElement(mousePoint);
if ((_resizeAction != null) && _resizeAction.IsResizing)
{
break;
}
//Verify LabelElement editing
if (_isEditLabel)
{
EndEditLabel();
}
// Search element by click
_selectedElement = Document.FindElement(mousePoint);
if (_selectedElement != null)
{
//Events
var eventMouseDownArg = new ElementMouseEventArgs(_selectedElement, e.X, e.Y);
OnElementMouseDown(eventMouseDownArg);
// Double-click to edit Label
if ((e.Clicks == 2) && _selectedElement is ILabelElement)
{
StartEditLabel();
break;
}
// Element selected
if (_selectedElement is ConnectorElement)
{
StartAddLink((ConnectorElement)_selectedElement, mousePoint);
_selectedElement = null;
}
else
{
StartSelectElements(_selectedElement, mousePoint);
}
}
else
{
// If click is on neutral area, clear selection
Document.ClearSelection();
var p = Gsc2Goc(new Point(e.X, e.Y));
;
_isMultiSelection = true;
_selectionArea.Location = p;
_selectionArea.Size = new Size(0, 0);
}
base.Invalidate();
}
break;
// ADD
case DesignerAction.Add:
if (e.Button == MouseButtons.Left)
{
mousePoint = Gsc2Goc(new Point(e.X, e.Y));
StartAddElement(mousePoint);
}
break;
// DELETE
case DesignerAction.Delete:
if (e.Button == MouseButtons.Left)
{
mousePoint = Gsc2Goc(new Point(e.X, e.Y));
DeleteElement(mousePoint);
}
break;
}
base.OnMouseDown(e);
}
