コード例 #1
0
ファイル: ItemsControlDragDrop.cs プロジェクト: megahirt/cog
 private void RemoveDraggedAdorner()
 {
     if (_draggedAdorner != null)
     {
         _draggedAdorner.Detach();
         _draggedAdorner = null;
     }
 }
コード例 #2
0
        private void RemoveDraggedAdorner()
        {
            if (_draggedAdorner == null)
            {
                return;
            }

            _draggedAdorner.Detach();
            _draggedAdorner = null;
        }
コード例 #3
0
        /// <summary>
        /// Drag and drop nodes, notes, annotations and connectors.
        /// </summary>
        /// <param name="mouse">Relative position to WorkspaceElements</param>
        private void DragAndDrop(Point mouse)
        {
            // disable clearing selection while dragged data is being generated
            // new AnnotationViewModel unnecessarily clears selection
            DynamoSelection.Instance.ClearSelectionDisabled = true;
            var selection   = DynamoSelection.Instance.Selection;
            var nodes       = selection.OfType <NodeModel>();
            var notes       = selection.OfType <NoteModel>();
            var pins        = selection.OfType <ConnectorPinModel>();
            var annotations = selection.OfType <AnnotationModel>();

            var connectors = nodes.SelectMany(n =>
                                              n.OutPorts.SelectMany(port => port.Connectors)
                                              .Where(c => c.End != null && c.End.Owner.IsSelected)).Distinct();

            // set list of selected viewmodels
            draggedData = connectors.Select(c => (ViewModelBase) new ConnectorViewModel(ViewModel, c))
                          .Concat(pins.Select(p => new ConnectorPinViewModel(ViewModel, p)))
                          .Concat(notes.Select(n => new NoteViewModel(ViewModel, n)))
                          .Concat(annotations.Select(a => new AnnotationViewModel(ViewModel, a)))
                          .Concat(nodes.Select(n =>
            {
                var node = this.ChildrenOfType <NodeView>()
                           .FirstOrDefault(view => view.ViewModel.NodeModel == n);
                if (node == null)
                {
                    return(new NodeViewModel(ViewModel, n));
                }

                var nodeRect = node.nodeBorder;
                var size     = new Size(nodeRect.ActualWidth, nodeRect.ActualHeight);
                // set fixed size for dragged nodes,
                // so that they will correspond to origin nodes
                return(new NodeViewModel(ViewModel, n, size));
            })).ToList();

            var locatableModels = nodes.Concat <ModelBase>(notes).Concat <ModelBase>(pins);
            var minX            = locatableModels.Any() ? locatableModels.Min(mb => mb.X) : 0;
            var minY            = locatableModels.Any() ? locatableModels.Min(mb => mb.Y) : 0;
            // compute offset to correctly place selected items right under mouse cursor
            var mouseOffset = new Point2D(mouse.X - minX, mouse.Y - minY);

            DynamoSelection.Instance.ClearSelectionDisabled = false;
            DragDrop.DoDragDrop(this, mouseOffset, DragDropEffects.Copy);

            // remove dragged selection view
            if (draggedAdorner != null)
            {
                draggedData = null;
                draggedAdorner.Detach();
                draggedAdorner = null;
            }
        }
コード例 #4
0
        private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            WorkspaceViewModel wvm = (DataContext as WorkspaceViewModel);

            if (this.snappedPort != null)
            {
                wvm.HandlePortClicked(this.snappedPort);
            }
            else
            {
                wvm.HandleLeftButtonDown(workBench, e);
            }

            // if selection is going to be dragged and ctrl is pressed
            if (wvm.IsDragging && Keyboard.Modifiers == ModifierKeys.Control)
            {
                initialMousePosition = e.GetPosition(WorkspaceElements);

                // disable clearing selection while dragged data is being generated
                // new AnnotationViewModel unnecessarily clears selection
                DynamoSelection.Instance.ClearSelectionDisabled = true;
                var selection   = DynamoSelection.Instance.Selection;
                var nodes       = selection.OfType <NodeModel>();
                var notes       = selection.OfType <NoteModel>();
                var annotations = selection.OfType <AnnotationModel>();

                var connectors = nodes.SelectMany(n =>
                                                  n.OutPorts.SelectMany(port => port.Connectors)
                                                  .Where(c => c.End != null && c.End.Owner.IsSelected)).Distinct();

                // set list of selected viewmodels
                draggedData = connectors.Select(c => (ViewModelBase) new ConnectorViewModel(ViewModel, c))
                              .Concat(notes.Select(n => new NoteViewModel(ViewModel, n)))
                              .Concat(annotations.Select(a => new AnnotationViewModel(ViewModel, a)))
                              .Concat(nodes.Select(n =>
                {
                    var nodeRect = this.ChildrenOfType <NodeView>()
                                   .First(view => view.ViewModel.NodeModel == n).nodeBorder;
                    var size = new Size(nodeRect.ActualWidth, nodeRect.ActualHeight);
                    // set fixed size for dragged nodes,
                    // so that they will correspond to origin nodes
                    return(new NodeViewModel(ViewModel, n, size));
                })).ToList();

                var mouse           = e.GetPosition(WorkspaceElements);
                var locatableModels = nodes.Concat <ModelBase>(notes);
                var minX            = locatableModels.Any() ? locatableModels.Min(mb => mb.X) : 0;
                var minY            = locatableModels.Any() ? locatableModels.Min(mb => mb.Y) : 0;
                // compute offset to correctly place selected items right under mouse cursor
                var mouseOffset = new Point2D(mouse.X - minX, mouse.Y - minY);

                DynamoSelection.Instance.ClearSelectionDisabled = false;
                DragDrop.DoDragDrop(this, mouseOffset, DragDropEffects.Copy);

                // end dragging operation by setting State from DragSetup to None
                ViewModel.HandleMouseRelease(workBench, e);
                // remove dragged selection view
                if (draggedAdorner != null)
                {
                    draggedData = null;
                    draggedAdorner.Detach();
                    draggedAdorner = null;
                }
            }

            InCanvasSearchBar.IsOpen = false;
        }