コード例 #1
0
        protected override void OnMouseMove(MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                if (_isDragging)
                {
                    var currentMousePosition = e.GetPosition(ParentGraphControl);
                    var offset = currentMousePosition - _lastMousePosition;

                    _lastMousePosition = currentMousePosition;

                    RaiseEvent(new ConnectorItemDraggingEventArgs(ConnectorDraggingEvent,
                                                                  this, offset.X, offset.Y));
                }
                else
                {
                    var eventArgs = new ConnectorItemDragStartedEventArgs(ConnectorDragStartedEvent, this);
                    RaiseEvent(eventArgs);

                    if (eventArgs.Cancel)
                    {
                        return;
                    }

                    _isDragging = true;
                    CaptureMouse();
                }

                e.Handled = true;
            }
            base.OnMouseMove(e);
        }
コード例 #2
0
        private void OnConnectorItemDragStarted(object sender, ConnectorItemDragStartedEventArgs e)
        {
            e.Handled = true;

            _draggingSourceConnector = (ConnectorItem)e.OriginalSource;

            var eventArgs = new ConnectionDragStartedEventArgs(ConnectionDragStartedEvent, this,
                                                               _draggingSourceConnector.ParentElementItem, _draggingSourceConnector);

            RaiseEvent(eventArgs);

            _draggingConnectionDataContext = eventArgs.Connection;

            if (_draggingConnectionDataContext == null)
            {
                e.Cancel = true;
            }
        }