private void MonitorBreach(DragablzDragDeltaEventArgs e)
{
var mousePositionOnHeaderItemsControl = Mouse.GetPosition(_dragablzItemsControl);
Orientation? breachOrientation = null;
if (mousePositionOnHeaderItemsControl.X < -InterTabController.HorizontalPopoutGrace
|| (mousePositionOnHeaderItemsControl.X - _dragablzItemsControl.ActualWidth) > InterTabController.HorizontalPopoutGrace)
breachOrientation = Orientation.Horizontal;
else if (mousePositionOnHeaderItemsControl.Y < -InterTabController.VerticalPopoutGrace
|| (mousePositionOnHeaderItemsControl.Y - _dragablzItemsControl.ActualHeight) > InterTabController.VerticalPopoutGrace)
breachOrientation = Orientation.Vertical;
if (!breachOrientation.HasValue) return;
var newTabHost = InterTabController.InterTabClient.GetNewHost(InterTabController.InterTabClient,
InterTabController.Partition, this);
if (newTabHost == null || newTabHost.TabablzControl == null || newTabHost.Container == null)
throw new ApplicationException("New tab host was not correctly provided");
var item = _dragablzItemsControl.ItemContainerGenerator.ItemFromContainer(e.DragablzItem);
var myWindow = Window.GetWindow(this);
if (myWindow == null) throw new ApplicationException("Unable to find owning window.");
var dragStartWindowOffset = ConfigureNewHostSizeAndGetDragStartWindowOffset(myWindow, newTabHost, e.DragablzItem);
var dragableItemHeaderPoint = e.DragablzItem.TranslatePoint(new Point(), _dragablzItemsControl);
var dragableItemSize = new Size(e.DragablzItem.ActualWidth, e.DragablzItem.ActualHeight);
var floatingItemSnapShots = this.VisualTreeDepthFirstTraversal()
.OfType<Layout>()
.SelectMany(l => l.FloatingDragablzItems().Select(FloatingItemSnapShot.Take))
.ToList();
var interTabTransfer = new InterTabTransfer(item, e.DragablzItem, breachOrientation.Value, dragStartWindowOffset, e.DragablzItem.MouseAtDragStart, dragableItemHeaderPoint, dragableItemSize, floatingItemSnapShots);
if (myWindow.WindowState == WindowState.Maximized)
{
var desktopMousePosition = Native.GetCursorPos().ToWpf();
newTabHost.Container.Left = desktopMousePosition.X - dragStartWindowOffset.X;
newTabHost.Container.Top = desktopMousePosition.Y - dragStartWindowOffset.Y;
}
else
{
newTabHost.Container.Left = myWindow.Left;
newTabHost.Container.Top = myWindow.Top;
}
newTabHost.Container.Show();
var contentPresenter = FindChildContentPresenter(item);
RemoveFromSource(item);
_itemsHolder.Children.Remove(contentPresenter);
if (Items.Count == 0)
Layout.ConsolidateBranch(this);
RestorePreviousSelection();
foreach (var dragablzItem in _dragablzItemsControl.DragablzItems())
{
dragablzItem.IsDragging = false;
dragablzItem.IsSiblingDragging = false;
}
newTabHost.TabablzControl.ReceiveDrag(interTabTransfer);
interTabTransfer.OriginatorContainer.IsDropTargetFound = true;
e.Cancel = true;
}
internal void ReceiveDrag(InterTabTransfer interTabTransfer)
{
var myWindow = Window.GetWindow(this);
if (myWindow == null) throw new ApplicationException("Unable to find owning window.");
myWindow.Activate();
_interTabTransfer = interTabTransfer;
if (Items.Count == 0)
{
_dragablzItemsControl.LockedMeasure = new Size(
interTabTransfer.ItemPositionWithinHeader.X + interTabTransfer.ItemSize.Width,
interTabTransfer.ItemPositionWithinHeader.Y + interTabTransfer.ItemSize.Height);
}
var lastFixedItem = _dragablzItemsControl.DragablzItems()
.OrderBy(i => i.LogicalIndex)
.Take(_dragablzItemsControl.FixedItemCount)
.LastOrDefault();
AddToSource(interTabTransfer.Item);
SelectedItem = interTabTransfer.Item;
Dispatcher.BeginInvoke(new Action(() => Layout.RestoreFloatingItemSnapShots(this, interTabTransfer.FloatingItemSnapShots)), DispatcherPriority.Loaded);
_dragablzItemsControl.InstigateDrag(interTabTransfer.Item, newContainer =>
{
newContainer.PartitionAtDragStart = interTabTransfer.OriginatorContainer.PartitionAtDragStart;
newContainer.IsDropTargetFound = true;
if (interTabTransfer.TransferReason == InterTabTransferReason.Breach)
{
if (interTabTransfer.BreachOrientation == Orientation.Horizontal)
newContainer.Y = interTabTransfer.OriginatorContainer.Y;
else
newContainer.X = interTabTransfer.OriginatorContainer.X;
}
else
{
//TODO sort for vert tabs
var mouseXOnItemsControl = Native.GetCursorPos().X - _dragablzItemsControl.PointToScreen(new Point()).X;
var newX = mouseXOnItemsControl - interTabTransfer.DragStartItemOffset.X;
if (lastFixedItem != null)
{
newX = Math.Max(newX, lastFixedItem.X + lastFixedItem.ActualWidth);
}
newContainer.X = newX;
newContainer.Y = 0;
}
newContainer.MouseAtDragStart = interTabTransfer.DragStartItemOffset;
});
}
private void ItemDragCompleted(object sender, DragablzDragCompletedEventArgs e)
{
if (!IsMyItem(e.DragablzItem)) return;
_interTabTransfer = null;
_dragablzItemsControl.LockedMeasure = null;
IsDraggingWindow = false;
}
private bool MonitorReentry(DragablzDragDeltaEventArgs e)
{
var screenMousePosition = _dragablzItemsControl.PointToScreen(Mouse.GetPosition(_dragablzItemsControl));
var sourceTabablzControl = (TabablzControl) e.Source;
if (sourceTabablzControl.Items.Count > 1 && e.DragablzItem.LogicalIndex < sourceTabablzControl.FixedHeaderCount)
{
return false;
}
var otherTabablzControls = LoadedInstances
.Where(
tc =>
tc != this && tc.InterTabController != null && InterTabController != null
&& Equals(tc.InterTabController.Partition, InterTabController.Partition))
.Select(tc =>
{
var topLeft = tc._dragablzItemsControl.PointToScreen(new Point());
var lastFixedItem = tc._dragablzItemsControl.DragablzItems()
.OrderBy(di=> di.LogicalIndex)
.Take(tc._dragablzItemsControl.FixedItemCount)
.LastOrDefault();
//TODO work this for vert tabs
if (lastFixedItem != null)
topLeft.Offset(lastFixedItem.X + lastFixedItem.ActualWidth, 0);
var bottomRight =
tc._dragablzItemsControl.PointToScreen(new Point(tc._dragablzItemsControl.ActualWidth,
tc._dragablzItemsControl.ActualHeight));
return new {tc, topLeft, bottomRight};
});
var target = Native.SortWindowsTopToBottom(Application.Current.Windows.OfType<Window>())
.Join(otherTabablzControls, w => w, a => Window.GetWindow(a.tc), (w, a) => a)
.FirstOrDefault(a => new Rect(a.topLeft, a.bottomRight).Contains(screenMousePosition));
if (target != null)
{
var mousePositionOnItem = Mouse.GetPosition(e.DragablzItem);
var floatingItemSnapShots = this.VisualTreeDepthFirstTraversal()
.OfType<Layout>()
.SelectMany(l => l.FloatingDragablzItems().Select(FloatingItemSnapShot.Take))
.ToList();
e.DragablzItem.IsDropTargetFound = true;
var item = RemoveItem(e.DragablzItem);
var interTabTransfer = new InterTabTransfer(item, e.DragablzItem, mousePositionOnItem, floatingItemSnapShots);
e.DragablzItem.IsDragging = false;
target.tc.ReceiveDrag(interTabTransfer);
e.Cancel = true;
return true;
}
return false;
}
