示例#1
0
        private void ItemDragDelta(object sender, DragablzDragDeltaEventArgs eventArgs)
        {
            var bounds          = new Size(ItemsPresenterWidth, ItemsPresenterHeight);
            var desiredLocation = new Point(
                eventArgs.DragablzItem.X + eventArgs.DragDeltaEventArgs.HorizontalChange,
                eventArgs.DragablzItem.Y + eventArgs.DragDeltaEventArgs.VerticalChange
                );

            if (ItemsOrganiser != null)
            {
                if (FixedItemCount > 0 &&
                    ItemsOrganiser.Sort(DragablzItems()).Take(FixedItemCount).Contains(eventArgs.DragablzItem))
                {
                    eventArgs.Handled = true;
                    return;
                }

                desiredLocation = ItemsOrganiser.ConstrainLocation(this, bounds,
                                                                   new Point(eventArgs.DragablzItem.X, eventArgs.DragablzItem.Y),
                                                                   new Size(eventArgs.DragablzItem.ActualWidth, eventArgs.DragablzItem.ActualHeight),
                                                                   desiredLocation, eventArgs.DragablzItem.DesiredSize);
            }

            foreach (var dragableItem in DragablzItems()
                     .Except(new[] { eventArgs.DragablzItem })) // how about Linq.Where() ?
            {
                dragableItem.IsSiblingDragging = true;
            }
            eventArgs.DragablzItem.IsDragging = true;

            eventArgs.DragablzItem.X = desiredLocation.X;
            eventArgs.DragablzItem.Y = desiredLocation.Y;

            if (ItemsOrganiser != null)
            {
                ItemsOrganiser.OrganiseOnDrag(
                    this,
                    bounds,
                    DragablzItems().Except(new[] { eventArgs.DragablzItem }), eventArgs.DragablzItem);
            }

            eventArgs.DragablzItem.BringIntoView();

            eventArgs.Handled = true;
        }
示例#2
0
        private void ThumbOnDragDelta(object sender, DragDeltaEventArgs dragDeltaEventArgs)
        {
            var thumb = (Thumb)sender;

            var previewEventArgs = new DragablzDragDeltaEventArgs(PreviewDragDelta, this, dragDeltaEventArgs);

            OnPreviewDragDelta(previewEventArgs);
            if (previewEventArgs.Cancel)
            {
                thumb.CancelDrag();
            }
            if (!previewEventArgs.Handled)
            {
                var eventArgs = new DragablzDragDeltaEventArgs(DragDelta, this, dragDeltaEventArgs);
                OnDragDelta(eventArgs);
                if (eventArgs.Cancel)
                {
                    thumb.CancelDrag();
                }
            }
        }
示例#3
0
 protected void OnPreviewDragDelta(DragablzDragDeltaEventArgs e)
 {
     RaiseEvent(e);
 }