BoxDiagrams.DiagramGestureAnalyzer.HandleShapeDrag C# (CSharp) Метод

		private void HandleShapeDrag(DragState state)
		{
			_doc.UndoStack.UndoTentativeAction();

			var movingShapes = Control.SelectedShapes;
			var panels = Control.SelectedShapes.Where(s => s.IsPanel);
			if (panels.Any() && (Control.SelectedShapes.Count > 1 ||
				state.ClickedShape.MouseCursor == Cursors.SizeAll))
			{
				// Also move shapes that are inside the panel
				movingShapes = Control.SelectedShapes.Clone();
				foreach (var panel in panels)
					movingShapes.AddRange(ShapesInsidePanel(panel));
			}

			if (movingShapes.Count <= 1)
			{
				var shape = state.ClickedShape.Shape;
				if (shape is Shape)
				{
					DoOrUndo action = ((Shape)shape).DragMoveAction(state.ClickedShape, state.TotalDelta);
					if (action != null)
					{
						_doc.UndoStack.DoTentatively(action);
						AutoHandleAnchorsChanged();
					}
				}
			}
			else
			{
				foreach (Shape shape in movingShapes)
				{
					DoOrUndo action = shape.DragMoveAction(state.ClickedShape, state.TotalDelta);
					if (action != null)
						_doc.UndoStack.DoTentatively(action);
				}
				AutoHandleAnchorsChanged();
			}
		}