Exemplo n.º 1
0
        void OnMouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left && MouseGestureBase.IsOnlyButtonPressed(e, MouseButton.Left))
            {
                e.Handled = true;
                IDesignPanel             designPanel = (IDesignPanel)sender;
                DesignPanelHitTestResult result      =
                    designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
                if (result.ModelHit != null)
                {
                    var darwItemBehaviors = result.ModelHit.Extensions.OfType <IDrawItemExtension>();
                    var drawItembehavior  = darwItemBehaviors.FirstOrDefault(x => x.CanItemBeDrawn(componentType));
                    if (drawItembehavior != null && drawItembehavior.CanItemBeDrawn(componentType))
                    {
                        drawItembehavior.StartDrawItem(result.ModelHit, componentType, designPanel, e);
                    }
                    else
                    {
                        var placementBehavior = result.ModelHit.GetBehavior <IPlacementBehavior>();
                        if (placementBehavior != null)
                        {
                            var createdItem = CreateItem(designPanel.Context);

                            new CreateComponentMouseGesture(result.ModelHit, createdItem, changeGroup)
                            .Start(designPanel, e);
                            // CreateComponentMouseGesture now is responsible for the changeGroup created by CreateItem()
                            changeGroup = null;
                        }
                    }
                }
            }
        }
Exemplo n.º 2
0
        void OnMouseDown(object sender, MouseButtonEventArgs e)
        {
            IDesignPanel             designPanel = (IDesignPanel)sender;
            DesignPanelHitTestResult result      = designPanel.HitTest(e.GetPosition(designPanel), false, true,
                                                                       HitTestType.ElementSelection);

            if (result.ModelHit != null)
            {
                IHandlePointerToolMouseDown b = result.ModelHit.GetBehavior <IHandlePointerToolMouseDown>();
                if (b != null)
                {
                    b.HandleSelectionMouseDown(designPanel, e, result);
                }
                if (!e.Handled)
                {
                    if (e.ChangedButton == MouseButton.Left &&
                        MouseGestureBase.IsOnlyButtonPressed(e, MouseButton.Left))
                    {
                        e.Handled = true;
                        ISelectionService selectionService = designPanel.Context.Services.Selection;
                        bool setSelectionIfNotMoving       = false;
                        if (selectionService.IsComponentSelected(result.ModelHit))
                        {
                            setSelectionIfNotMoving = true;
                            // There might be multiple components selected. We might have
                            // to set the selection to only the item clicked on
                            // (or deselect the item clicked on if Ctrl is pressed),
                            // but we should do so only if the user isn't performing a drag operation.
                        }
                        else
                        {
                            selectionService.SetSelectedComponents(new DesignItem[] { result.ModelHit },
                                                                   SelectionTypes.Auto);
                        }
                        if (selectionService.IsComponentSelected(result.ModelHit))
                        {
                            new DragMoveMouseGesture(result.ModelHit, e.ClickCount == 2,
                                                     setSelectionIfNotMoving).Start(designPanel, e);
                        }
                    }
                }
            }
        }