void designPanel_DragOver(object sender, DragEventArgs e) { try { IDesignPanel designPanel = (IDesignPanel)sender; e.Effects = DragDropEffects.Copy; e.Handled = true; Point p = e.GetPosition(designPanel); if (moveLogic == null) { if (e.Data.GetData(typeof(CreateComponentTool)) != this) { return; } // TODO: dropLayer in designPanel designPanel.IsAdornerLayerHitTestVisible = false; DesignPanelHitTestResult result = designPanel.HitTest(p, false, true, HitTestType.Default); if (result.ModelHit != null) { designPanel.Focus(); DesignItem createdItem = CreateItem(designPanel.Context); if (AddItemWithDefaultSize(result.ModelHit, createdItem, e.GetPosition(result.ModelHit.View))) { moveLogic = new MoveLogic(createdItem); if (designPanel.Context.Services.Component is XamlComponentService) { ((XamlComponentService)designPanel.Context.Services.Component) .RaiseComponentRegisteredAndAddedToContainer(createdItem); } createPoint = p; // We'll keep the ChangeGroup open as long as the moveLogic is active. } else { // Abort the ChangeGroup created by the CreateItem() call. changeGroup.Abort(); } } } else if ((moveLogic.ClickedOn.View as FrameworkElement).IsLoaded) { if (moveLogic.Operation == null) { moveLogic.Start(createPoint); } else { moveLogic.Move(p); } } } catch (Exception x) { DragDropExceptionHandler.RaiseUnhandledException(x); } }
protected override void OnMouseMove(object sender, MouseEventArgs e) { base.OnMouseMove(sender, e); // call OnDragStarted if min. drag distace is reached moveLogic.Move(e.GetPosition(positionRelativeTo)); }