protected virtual void OnDragServiceDragOver(object sender, RadDragOverEventArgs e)
{
if (e.HitTarget is DraggableLayoutControlItem)
{
e.CanDrop = true;
LayoutControlContainerElement ancestor = ((DraggableLayoutControlItem)e.HitTarget).AssociatedItem.FindAncestor <LayoutControlContainerElement>();
LayoutControlDropTargetInfo dropTargetNode = ancestor.LayoutTree.GetDropTargetNode(e.HitTarget as DraggableLayoutControlItem, this.layoutControl.PointToClient(Control.MousePosition), this.GetDragContext(e.DragInstance));
dropTargetNode?.TargetBounds.Offset(ancestor.ControlBoundingRectangle.Location);
this.layoutControl.DragOverlay.SetPreviewRectangle(dropTargetNode != null ? dropTargetNode.TargetBounds : Rectangle.Empty);
}
else if (e.HitTarget is DraggableLayoutControlOverlayElement)
{
DraggableLayoutControlOverlayElement hitTarget = e.HitTarget as DraggableLayoutControlOverlayElement;
if (hitTarget.Parent is RootRadElement && hitTarget.Items.Count == 0)
{
e.CanDrop = true;
this.layoutControl.DragOverlay.SetPreviewRectangle(new Rectangle(Point.Empty, this.layoutControl.Size));
}
else
{
e.CanDrop = false;
}
}
else
{
e.CanDrop = false;
this.layoutControl.DragOverlay.SetPreviewRectangle(Rectangle.Empty);
}
}
protected virtual void UpdateDragHintLocation(Point mousePosition)
{
if (!this.CanCommit)
{
this.overlay.SetPreviewRectangle(Rectangle.Empty);
}
else
{
DraggableLayoutControlItem dropTarget = this.DropTarget as DraggableLayoutControlItem;
if (dropTarget != null)
{
LayoutControlContainerElement ancestor = dropTarget.AssociatedItem.FindAncestor <LayoutControlContainerElement>();
Point client = this.overlay.PointToClient(mousePosition);
LayoutControlDropTargetInfo dropTargetNode = ancestor.LayoutTree.GetDropTargetNode(dropTarget, client, this.draggedItem.AssociatedItem.GetType());
if (dropTargetNode != null)
{
this.ValidCursor = (Cursor)null;
dropTargetNode.TargetBounds.Offset(ancestor.ControlBoundingRectangle.Location);
this.overlay.SetPreviewRectangle(dropTargetNode.TargetBounds);
return;
}
}
else if ((this.DropTarget is BaseListViewElement || this.DropTarget is BaseListViewVisualItem) && this.CanDropOnListView(this.DropTarget as RadElement))
{
this.overlay.SetPreviewRectangle(Rectangle.Empty);
this.ValidCursor = this.deleteCursor;
return;
}
this.ValidCursor = (Cursor)null;
this.overlay.SetPreviewRectangle(Rectangle.Empty);
}
}
protected override void CreateChildElements()
{
base.CreateChildElements();
this.StretchHorizontally = this.StretchVertically = true;
this.Padding = new Padding(4);
this.headerElement = new CollapsiblePanelHeaderElement();
int num1 = (int)this.headerElement.HeaderTextElement.BindProperty(RadItem.TextProperty, (RadObject)this, RadItem.TextProperty, PropertyBindingOptions.TwoWay);
int num2 = (int)this.headerElement.BindProperty(CollapsiblePanelHeaderElement.IsExpandedProperty, (RadObject)this, LayoutControlGroupItem.IsExpandedProperty, PropertyBindingOptions.TwoWay);
int num3 = (int)this.headerElement.HeaderButtonElement.BindProperty(CollapsiblePanelButtonElement.IsExpandedProperty, (RadObject)this, LayoutControlGroupItem.IsExpandedProperty, PropertyBindingOptions.TwoWay);
this.containerElement = this.CreateContainerElement();
this.containerElement.Class = "LayoutControlGroupContainer";
this.containerElement.DrawBorder = false;
this.Children.Add((RadElement)this.headerElement);
this.Children.Add((RadElement)this.containerElement);
this.headerElement.HeaderButtonElement.MouseUp += new MouseEventHandler(this.headerElement_MouseUp);
}
public LayoutControlResizingBehavior(LayoutControlContainerElement owner)
{
this.owner = owner;
}
public LayoutControlDropTargetInfo GetDropTargetNode(
DraggableLayoutControlItem dropTargetElement,
Point mousePosition,
System.Type dragContext)
{
LayoutControlContainerElement ancestor = dropTargetElement.AssociatedItem.FindAncestor <LayoutControlContainerElement>();
mousePosition.Offset(-ancestor.ControlBoundingRectangle.X, -ancestor.ControlBoundingRectangle.Y);
LayoutControlDropTargetInfo controlDropTargetInfo = new LayoutControlDropTargetInfo();
Rectangle bounds = dropTargetElement.Bounds;
Point point = new Point(mousePosition.X - bounds.X, mousePosition.Y - bounds.Y);
LayoutTreeNode nodeByItem = this.FindNodeByItem(dropTargetElement.AssociatedItem);
if (dropTargetElement.AssociatedItem is LayoutControlGroupItem && ((LayoutControlGroupItem)dropTargetElement.AssociatedItem).Items.Count == 0)
{
LayoutControlGroupItem associatedItem = dropTargetElement.AssociatedItem as LayoutControlGroupItem;
Point location = new Point(dropTargetElement.ControlBoundingRectangle.X - this.owner.ControlBoundingRectangle.X, dropTargetElement.ControlBoundingRectangle.Y - this.owner.ControlBoundingRectangle.Y);
location.Offset(associatedItem.ContainerElement.BoundingRectangle.Location);
controlDropTargetInfo.TargetBounds = new Rectangle(location, associatedItem.ContainerElement.BoundingRectangle.Size);
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Center;
return(controlDropTargetInfo);
}
if (dropTargetElement.AssociatedItem is LayoutControlTabbedGroup)
{
LayoutControlTabbedGroup associatedItem = dropTargetElement.AssociatedItem as LayoutControlTabbedGroup;
if ((object)dragContext != null && typeof(LayoutControlGroupItem).IsAssignableFrom(dragContext) && ((double)point.Y / (double)bounds.Height >= 0.333333343267441 && (double)point.Y / (double)bounds.Height <= 0.666666686534882 && ((double)point.X / (double)bounds.Width > 0.25 && (double)point.X / (double)bounds.Width < 0.75) && associatedItem.ItemGroups.Count == 0 || associatedItem.TabStrip.ItemContainer.BoundingRectangle.Contains(point)))
{
Point location = new Point((int)nodeByItem.Bounds.Location.X, (int)nodeByItem.Bounds.Location.Y);
location.Offset(associatedItem.TabStrip.ContentArea.BoundingRectangle.Location);
controlDropTargetInfo.TargetTabIndex = associatedItem.GetTargetDropIndex(point);
controlDropTargetInfo.TargetBounds = controlDropTargetInfo.TargetTabIndex >= 0 ? associatedItem.GetTargetBounds(controlDropTargetInfo.TargetTabIndex) : new Rectangle(location, associatedItem.TabStrip.ContentArea.BoundingRectangle.Size);
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Center;
return(controlDropTargetInfo);
}
}
if ((double)point.Y / (double)bounds.Height <= 0.16666667163372)
{
float num = Math.Min(0.99f, (float)point.Y / ((float)bounds.Height / 6f));
List <LayoutTreeNode> groupsWithSameEdge = this.GetParentGroupsWithSameEdge(nodeByItem, bounds.Top, RadDirection.Up);
if (groupsWithSameEdge.Count == 0)
{
return((LayoutControlDropTargetInfo)null);
}
int index = Math.Min(groupsWithSameEdge.Count - 1, (int)((double)groupsWithSameEdge.Count * (double)num));
LayoutTreeNode layoutTreeNode = groupsWithSameEdge[index];
controlDropTargetInfo.TargetBounds = new Rectangle((int)layoutTreeNode.Bounds.X, (int)layoutTreeNode.Bounds.Y, (int)layoutTreeNode.Bounds.Width, 26);
controlDropTargetInfo.TargetNode = layoutTreeNode;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Top;
}
else if ((double)point.Y / (double)bounds.Height > 0.16666667163372 && (double)point.Y / (double)bounds.Height < 0.333333343267441)
{
controlDropTargetInfo.TargetBounds = new Rectangle(bounds.Location, new Size(bounds.Width, bounds.Height / 2));
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Top;
}
else if ((double)point.Y / (double)bounds.Height > 0.666666686534882 && (double)point.Y / (double)bounds.Height < 0.833333313465118)
{
controlDropTargetInfo.TargetBounds = new Rectangle(new Point(bounds.X, bounds.Y + bounds.Height / 2), new Size(bounds.Width, bounds.Height / 2));
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Bottom;
}
else if ((double)point.Y / (double)bounds.Height >= 0.833333313465118)
{
float num = Math.Min(0.99f, (float)(bounds.Height - point.Y) / ((float)bounds.Height / 6f));
List <LayoutTreeNode> groupsWithSameEdge = this.GetParentGroupsWithSameEdge(nodeByItem, bounds.Bottom, RadDirection.Down);
if (groupsWithSameEdge.Count == 0)
{
return((LayoutControlDropTargetInfo)null);
}
int index = Math.Min(groupsWithSameEdge.Count - 1, (int)((double)groupsWithSameEdge.Count * (double)num));
LayoutTreeNode layoutTreeNode = groupsWithSameEdge[index];
controlDropTargetInfo.TargetBounds = new Rectangle((int)layoutTreeNode.Bounds.X, (int)layoutTreeNode.Bounds.Bottom - 26, (int)layoutTreeNode.Bounds.Width, 26);
controlDropTargetInfo.TargetNode = layoutTreeNode;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Bottom;
}
else if ((double)point.Y / (double)bounds.Height >= 0.333333343267441 && (double)point.Y / (double)bounds.Height <= 0.666666686534882)
{
if ((double)point.X / (double)bounds.Width <= 0.25)
{
float num = Math.Min(0.99f, (float)point.X / ((float)bounds.Width / 4f));
List <LayoutTreeNode> groupsWithSameEdge = this.GetParentGroupsWithSameEdge(nodeByItem, bounds.Left, RadDirection.Left);
if (groupsWithSameEdge.Count == 0)
{
return((LayoutControlDropTargetInfo)null);
}
int index = Math.Min(groupsWithSameEdge.Count - 1, (int)((double)groupsWithSameEdge.Count * (double)num));
LayoutTreeNode layoutTreeNode = groupsWithSameEdge[index];
controlDropTargetInfo.TargetBounds = new Rectangle((int)layoutTreeNode.Bounds.X, (int)layoutTreeNode.Bounds.Y, 86, (int)layoutTreeNode.Bounds.Height);
controlDropTargetInfo.TargetNode = layoutTreeNode;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Left;
}
else if ((double)point.X / (double)bounds.Width > 0.25 && (double)point.X / (double)bounds.Width <= 0.5)
{
controlDropTargetInfo.TargetBounds = new Rectangle(bounds.Location, new Size(bounds.Width / 2, bounds.Height));
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Left;
}
else if ((double)point.X / (double)bounds.Width > 0.5 && (double)point.X / (double)bounds.Width < 0.75)
{
controlDropTargetInfo.TargetBounds = new Rectangle(new Point(bounds.X + bounds.Width / 2, bounds.Y), new Size(bounds.Width / 2, bounds.Height));
controlDropTargetInfo.TargetNode = nodeByItem;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Right;
}
else if ((double)point.X / (double)bounds.Width >= 0.75)
{
float num = Math.Min(0.99f, (float)(bounds.Width - point.X) / ((float)bounds.Width / 4f));
List <LayoutTreeNode> groupsWithSameEdge = this.GetParentGroupsWithSameEdge(nodeByItem, bounds.Right, RadDirection.Right);
if (groupsWithSameEdge.Count == 0)
{
return((LayoutControlDropTargetInfo)null);
}
int index = Math.Min(groupsWithSameEdge.Count - 1, (int)((double)groupsWithSameEdge.Count * (double)num));
LayoutTreeNode layoutTreeNode = groupsWithSameEdge[index];
controlDropTargetInfo.TargetBounds = new Rectangle((int)layoutTreeNode.Bounds.Right - 86, (int)layoutTreeNode.Bounds.Y, 86, (int)layoutTreeNode.Bounds.Height);
controlDropTargetInfo.TargetNode = layoutTreeNode;
controlDropTargetInfo.TargetPosition = LayoutControlDropPosition.Right;
}
}
return(controlDropTargetInfo);
}
public LayoutTree(LayoutControlContainerElement owner)
{
this.owner = owner;
}
