Beispiel #1
0
		/// <summary>
		/// Returns information about insertion position for an item given screen coordinates. Used internally for drag&drop support.
		/// </summary>
		/// <param name="containerItem">Container item</param>
		/// <param name="pScreen">Screen coordinates</param>
		/// <param name="DragItem">Item that is being dragged</param>
		/// <returns>Information about insertion position or null if item cannot be inserted to the container.</returns>
		public static InsertPosition GetInsertPosition(BaseItem containerItem, Point pScreen, BaseItem DragItem)
		{
			InsertPosition objInsertPos=null;
            Control objContainer = null;

            if (containerItem is PopupItem && containerItem.Expanded)
                objContainer = ((PopupItem)containerItem).PopupControl;
            else
                objContainer = containerItem.ContainerControl as Control;

            if (objContainer == null)
				return null;

			Point pClient=objContainer.PointToClient(pScreen);
			Rectangle thisRect=containerItem.DisplayRectangle;
            if (containerItem is PopupItem && containerItem.Expanded)
                thisRect = objContainer.DisplayRectangle;
			if(thisRect.Contains(pClient) || containerItem.SubItems.Count==0 && objContainer.ClientRectangle.Contains(pClient) || containerItem is ItemContainer && ((ItemContainer)containerItem).SystemContainer && objContainer.ClientRectangle.Contains(pClient))
			{
				Rectangle r;
				BaseItem objItem;
				// Check first inside any expanded items
				objItem=containerItem.ExpandedItem();
				if(objItem!=null)
				{
					IDesignTimeProvider provider=objItem as IDesignTimeProvider;
					if(provider!=null)
					{
						objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
						if(objInsertPos!=null)
							return objInsertPos;
					}
				}

				for(int i=0;i<containerItem.SubItems.Count;i++)
				{
					objItem=containerItem.SubItems[i];
					r=objItem.DisplayRectangle;
					r.Inflate(2,2);
					if(objItem.Visible && r.Contains(pClient))
					{
						if(objItem.SystemItem && containerItem.SubItems.Count!=1)
						{
							return null;
						}
						if(objItem==DragItem)
							return new InsertPosition();
						
						if(objItem.IsContainer && objItem is IDesignTimeProvider)
						{
							Rectangle inner=r;
							inner.Inflate(-8,-8);
                            if (inner.Contains(pClient))
                            {
                                return ((IDesignTimeProvider)objItem).GetInsertPosition(pScreen, DragItem);
                            }
						}
                        if (containerItem.AllowDrop)
                        {
                            objInsertPos = new InsertPosition();
                            objInsertPos.TargetProvider = (IDesignTimeProvider)containerItem;
                            objInsertPos.Position = i;
                            if (objItem.Orientation == eOrientation.Horizontal && !objItem.IsOnMenu)
                            {
                                if (pClient.X <= objItem.LeftInternal + objItem.WidthInternal / 2 || objItem.SystemItem)
                                    objInsertPos.Before = true;
                            }
                            else
                            {
                                if (pClient.Y <= objItem.TopInternal + objItem.HeightInternal / 2 || objItem.SystemItem)
                                    objInsertPos.Before = true;
                            }

                            // We need to collapse any expanded items that are not on this bar
                            IOwner owner = containerItem.GetOwner() as IOwner;
                            if (owner != null)
                            {
                                BaseItem objExp = owner.GetExpandedItem();
                                if (objExp != null)
                                {
                                    while (objExp.Parent != null)
                                        objExp = objExp.Parent;
                                    BaseItem objParent = objItem;
                                    while (objParent.Parent != null)
                                        objParent = objParent.Parent;
                                    if (objExp != objParent)
                                        owner.SetExpandedItem(null);
                                }
                            }

                            if (objItem is PopupItem && (objItem.SubItems.Count > 0 || objItem.IsOnMenuBar))
                            {
                                if (!objItem.Expanded && objItem.CanCustomize)
                                    objItem.Expanded = true;
                            }
                            else
                            {
                                BaseItem.CollapseSubItems(containerItem);
                            }
                            break;
                        }
					}
				}
				if(objInsertPos==null && containerItem.AllowDrop)
				{
					// Container is empty but it can contain the items
					if(containerItem.SubItems.Count>1 && containerItem.SubItems[containerItem.SubItems.Count-1].SystemItem)
						objInsertPos=new InsertPosition(containerItem.SubItems.Count-2,true,(IDesignTimeProvider)containerItem);
					else
						objInsertPos=new InsertPosition(containerItem.SubItems.Count-1,false,(IDesignTimeProvider)containerItem);
				}
			}
			else
			{
				foreach(BaseItem objItem in containerItem.SubItems)
				{
					if(objItem==DragItem)
						continue;
					IDesignTimeProvider provider=objItem as IDesignTimeProvider;
					if(provider!=null)
					{
						objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
						if(objInsertPos!=null)
							break;
					}
				}				
			}
			return objInsertPos;
		}
Beispiel #2
0
		/// <summary>
		/// Must be called by any sub item that implements the image when image has changed
		/// </summary>
//		public override void OnSubItemImageSizeChanged(BaseItem objItem)
//		{
//            base.OnSubItemImageSizeChanged(objItem);
//			if(this.Expanded)
//			{
//				this.RecalcSize();
//				this.Refresh();
//			}
//		}

		//***********************************************
		// IDesignTimeProvider Implementation
		//***********************************************
		InsertPosition IDesignTimeProvider.GetInsertPosition(Point pScreen, BaseItem DragItem)
		{
			InsertPosition objInsertPos=null;
			System.Windows.Forms.Control objContainer=this.ContainerControl as System.Windows.Forms.Control;
			if(objContainer==null || !this.CanCustomize)
				return null;
			Point pClient=objContainer.PointToClient(pScreen);
			Rectangle thisRect=this.DisplayRectangle;
			if(thisRect.Contains(pClient))
			{
				Rectangle r=thisRect;
				r.Size=m_PanelRect.Size;
				r.X+=m_PanelRect.Left;
				r.Y+=m_PanelRect.Top;
				if(r.Contains(pClient) && !this.Expanded)
				{
					this.Expanded=true;
					objInsertPos=new InsertPosition();
					objInsertPos.TargetProvider=this;
					if(this.SubItems.Count==0)
						objInsertPos.Position=-1;
					else
					{
						objInsertPos.Position=0;
						objInsertPos.Before=true;
					}
					return objInsertPos;
				}
				
				BaseItem objItem;
				// Check first inside any expanded items
				objItem=this.ExpandedItem();
				if(objItem!=null)
				{
					IDesignTimeProvider provider=objItem as IDesignTimeProvider;
					if(provider!=null)
					{
						objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
						if(objInsertPos!=null)
							return objInsertPos;
					}
				}

				for(int i=0;i<this.SubItems.Count;i++)
				{
					objItem=this.SubItems[i];
					r=objItem.DisplayRectangle;
					r.Inflate(2,2);
					if(objItem.Visible && objItem.Displayed && r.Contains(pClient))
					{
						if(objItem.SystemItem && this.SubItems.Count!=1)
						{
							return null;
						}
						if(objItem==DragItem)
							return new InsertPosition();
						objInsertPos=new InsertPosition();
						objInsertPos.TargetProvider=this;
						objInsertPos.Position=i;
						if(pClient.Y<=objItem.TopInternal+objItem.HeightInternal/2 || objItem.SystemItem)
							objInsertPos.Before=true;

						// We need to collapse any expanded items that are not on this bar
						IOwner owner=this.GetOwner() as IOwner;
						if(owner!=null)
						{
							BaseItem objExp=owner.GetExpandedItem();
							if(objExp!=null)
							{
								while(objExp.Parent!=null)
									objExp=objExp.Parent;
								BaseItem objParent=objItem;
								while(objParent.Parent!=null)
									objParent=objParent.Parent;
								if(objExp!=objParent)
									owner.SetExpandedItem(null);
							}
						}

						if(objItem is PopupItem && (objItem.SubItems.Count>0 || objItem.IsOnMenuBar))
						{
							if(!objItem.Expanded)
								objItem.Expanded=true;
						}
						else
						{
							CollapseSubItems(this);
						}
						break;
					}
				}
				if(objInsertPos==null)
				{
					// Container is empty but it can contain the items
					if(this.SubItems.Count>1 && this.SubItems[this.SubItems.Count-1].SystemItem)
						objInsertPos=new InsertPosition(this.SubItems.Count-2,true,this);
					else
						objInsertPos=new InsertPosition(this.SubItems.Count-1,false,this);
				}
			}
			else
			{
				foreach(BaseItem objItem in this.SubItems)
				{
					if(objItem==DragItem)
						continue;
					IDesignTimeProvider provider=objItem as IDesignTimeProvider;
					if(provider!=null)
					{
						objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
						if(objInsertPos!=null)
							break;
					}
				}				
			}
			return objInsertPos;
		}