public void Paste()
{
const int pasteStep = 20;
_undo.Enabled = false;
var iData = Clipboard.GetDataObject();
var format = DataFormats.GetFormat("Diagram.NET Element Collection");
if (iData.GetDataPresent(format.Name))
{
IFormatter formatter = new BinaryFormatter();
Stream stream = (MemoryStream)iData.GetData(format.Name);
var elCol = (BaseElement[])formatter.Deserialize(stream);
stream.Close();
foreach (var el in elCol)
{
el.Location = new Point(el.Location.X + pasteStep, el.Location.Y + pasteStep);
}
Document.AddElements(elCol);
Document.ClearSelection();
Document.SelectElements(elCol);
}
_undo.Enabled = true;
AddUndo();
EndGeneralAction();
}
private void StartAddElement(Point mousePoint)
{
Document.ClearSelection();
//Change Selection Area Color
_selectionArea.FillColor = Color.LightSteelBlue;
_isAddSelection = true;
_selectionArea.Location = mousePoint;
_selectionArea.Size = new Size(0, 0);
}
private void StartSelectElements(BaseElement selectedElement, Point mousePoint)
{
// Vefiry if element is in selection
if (!Document.SelectedElements.Contains(selectedElement))
{
//Clear selection and add new element to selection
Document.ClearSelection();
Document.SelectElement(selectedElement);
}
_changed = false;
_moveAction = new MoveAction();
MoveAction.OnElementMovingDelegate onElementMovingDelegate = OnElementMoving;
_moveAction.Start(mousePoint, Document, onElementMovingDelegate);
// Get Controllers
_controllers = new IController[Document.SelectedElements.Count];
for (var i = Document.SelectedElements.Count - 1; i >= 0; i--)
{
if (Document.SelectedElements[i] is IControllable)
{
// Get General Controller
_controllers[i] = ((IControllable)Document.SelectedElements[i]).GetController();
}
else
{
_controllers[i] = null;
}
}
_resizeAction = new ResizeAction();
_resizeAction.Select(Document);
}
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);
}
