DotNet 4.8.1 build of DotNetBar
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using System.Drawing;
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using System.Windows.Forms;
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namespace DevComponents.DotNetBar
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{
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/// <summary>
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/// Summary description for DesignTimeProviderContainer.
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/// </summary>
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public class DesignTimeProviderContainer
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{
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/// <summary>
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/// Returns information about insertion position for an item given screen coordinates. Used internally for drag&drop support.
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/// </summary>
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/// <param name="containerItem">Container item</param>
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/// <param name="pScreen">Screen coordinates</param>
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/// <param name="DragItem">Item that is being dragged</param>
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/// <returns>Information about insertion position or null if item cannot be inserted to the container.</returns>
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public static InsertPosition GetInsertPosition(BaseItem containerItem, Point pScreen, BaseItem DragItem)
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{
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InsertPosition objInsertPos=null;
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Control objContainer = null;
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if (containerItem is PopupItem && containerItem.Expanded)
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objContainer = ((PopupItem)containerItem).PopupControl;
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else
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objContainer = containerItem.ContainerControl as Control;
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if (objContainer == null)
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return null;
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Point pClient=objContainer.PointToClient(pScreen);
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Rectangle thisRect=containerItem.DisplayRectangle;
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if (containerItem is PopupItem && containerItem.Expanded)
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thisRect = objContainer.DisplayRectangle;
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if(thisRect.Contains(pClient) || containerItem.SubItems.Count==0 && objContainer.ClientRectangle.Contains(pClient) || containerItem is ItemContainer && ((ItemContainer)containerItem).SystemContainer && objContainer.ClientRectangle.Contains(pClient))
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{
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Rectangle r;
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BaseItem objItem;
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// Check first inside any expanded items
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objItem=containerItem.ExpandedItem();
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if(objItem!=null)
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{
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IDesignTimeProvider provider=objItem as IDesignTimeProvider;
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if(provider!=null)
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{
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objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
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if(objInsertPos!=null)
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return objInsertPos;
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}
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}
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bool dragItemPreviousItem = false;
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for(int i=0;i<containerItem.SubItems.Count;i++)
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{
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objItem=containerItem.SubItems[i];
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r=objItem.DisplayRectangle;
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r.Inflate(2,2);
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if(objItem.Visible && r.Contains(pClient))
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{
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if(objItem.SystemItem && containerItem.SubItems.Count!=1)
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{
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return null;
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}
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if(objItem==DragItem)
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return new InsertPosition();
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if(objItem.IsContainer && objItem is IDesignTimeProvider)
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{
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Rectangle inner=r;
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inner.Inflate(-8,-8);
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if (inner.Contains(pClient))
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{
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return ((IDesignTimeProvider)objItem).GetInsertPosition(pScreen, DragItem);
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}
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}
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if (containerItem.AllowDrop)
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{
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objInsertPos = new InsertPosition();
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objInsertPos.TargetProvider = (IDesignTimeProvider)containerItem;
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objInsertPos.Position = i;
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if (!dragItemPreviousItem)
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{
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if (containerItem.Orientation == eOrientation.Horizontal && !objItem.IsOnMenu)
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{
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if (pClient.X <= objItem.LeftInternal + objItem.WidthInternal / 2 || objItem.SystemItem)
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objInsertPos.Before = true;
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}
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else
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{
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if (pClient.Y <= objItem.TopInternal + objItem.HeightInternal / 2 || objItem.SystemItem)
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objInsertPos.Before = true;
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}
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}
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// We need to collapse any expanded items that are not on this bar
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IOwner owner = containerItem.GetOwner() as IOwner;
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if (owner != null)
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{
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BaseItem objExp = owner.GetExpandedItem();
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if (objExp != null)
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{
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while (objExp.Parent != null)
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objExp = objExp.Parent;
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BaseItem objParent = objItem;
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while (objParent.Parent != null)
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objParent = objParent.Parent;
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if (objExp != objParent)
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owner.SetExpandedItem(null);
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}
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}
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if (CanExpand(objItem))
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{
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if (!objItem.Expanded && objItem.CanCustomize)
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objItem.Expanded = true;
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}
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else if(DragItem == null || objItem!=null && objItem != DragItem.Parent)
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{
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BaseItem.CollapseSubItems(containerItem);
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}
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break;
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}
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}
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dragItemPreviousItem = (DragItem == objItem);
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}
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if(objInsertPos==null && containerItem.AllowDrop)
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{
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// Container is empty but it can contain the items
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if(containerItem.SubItems.Count>1 && containerItem.SubItems[containerItem.SubItems.Count-1].SystemItem)
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objInsertPos=new InsertPosition(containerItem.SubItems.Count-2,true,(IDesignTimeProvider)containerItem);
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else
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objInsertPos=new InsertPosition(containerItem.SubItems.Count-1,false,(IDesignTimeProvider)containerItem);
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}
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}
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else
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{
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foreach(BaseItem objItem in containerItem.SubItems)
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{
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if(objItem==DragItem)
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continue;
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IDesignTimeProvider provider=objItem as IDesignTimeProvider;
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if(provider!=null)
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{
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objInsertPos=provider.GetInsertPosition(pScreen, DragItem);
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if(objInsertPos!=null)
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break;
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}
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}
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}
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return objInsertPos;
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}
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private static bool CanExpand(BaseItem objItem)
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{
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return (objItem is PopupItem && (objItem.SubItems.Count > 0 || objItem.IsOnMenuBar)) || objItem is ItemContainer && ((ItemContainer)objItem).CanExpand;
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}
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/// <summary>
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/// Draws reversible marker to indicates item drag&drop position
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/// </summary>
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/// <param name="containerItem">Container item</param>
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/// <param name="iPos">Position to draw marker at</param>
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/// <param name="Before">Indicates whether the marker is drawn before the reference position</param>
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public static void DrawReversibleMarker(BaseItem containerItem, int iPos, bool Before)
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{
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Control objCtrl=containerItem.ContainerControl as Control;
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if(objCtrl==null)
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return;
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BaseItem objItem=null;
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if(iPos>=0)
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objItem=containerItem.SubItems[iPos];
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Rectangle r, rl,rr;
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if(objItem!=null)
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{
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if(objItem.DesignInsertMarker!=eDesignInsertPosition.None)
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objItem.DesignInsertMarker=eDesignInsertPosition.None;
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else if(Before)
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objItem.DesignInsertMarker=eDesignInsertPosition.Before;
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else
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objItem.DesignInsertMarker=eDesignInsertPosition.After;
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return;
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}
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else
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{
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Rectangle rTmp=containerItem.DisplayRectangle;
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rTmp.Inflate(-1,-1);
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r=new Rectangle(rTmp.Left+2,rTmp.Top+2,1,rTmp.Height-4);
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rl=new Rectangle(rTmp.Left,rTmp.Top+1,5,1);
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rr=new Rectangle(rTmp.Left,rTmp.Bottom-2,5,1);
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}
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//r.Location=objCtrl.PointToScreen(r.Location);
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//rl.Location=objCtrl.PointToScreen(rl.Location);
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//rr.Location=objCtrl.PointToScreen(rr.Location);
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//ControlPaint.DrawReversibleFrame(r,SystemColors.Control,FrameStyle.Thick);
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//ControlPaint.DrawReversibleFrame(rl,SystemColors.Control,FrameStyle.Thick);
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//ControlPaint.DrawReversibleFrame(rr,SystemColors.Control,FrameStyle.Thick);
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}
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/// <summary>
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/// Inserts drag&drop item at specified position.
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/// </summary>
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/// <param name="containerItem">Container item.</param>
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/// <param name="objItem">Item being inserted</param>
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/// <param name="iPos">Insertion position</param>
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/// <param name="Before">Indicates whether item is inserted before the specified insertion position</param>
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public static void InsertItemAt(BaseItem containerItem, BaseItem objItem, int iPos, bool Before)
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{
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if(containerItem.ExpandedItem()!=null)
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{
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containerItem.ExpandedItem().Expanded=false;
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}
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if(!Before)
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{
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if(iPos+1>=containerItem.SubItems.Count)
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{
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containerItem.SubItems.Add(objItem,GetAppendPosition(containerItem));
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}
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else
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{
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containerItem.SubItems.Add(objItem,iPos+1);
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}
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}
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else
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{
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if(iPos>=containerItem.SubItems.Count)
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{
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containerItem.SubItems.Add(objItem, GetAppendPosition(containerItem));
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}
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else
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{
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containerItem.SubItems.Add(objItem,iPos);
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}
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}
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if(containerItem.ContainerControl is Bar)
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((Bar)containerItem.ContainerControl).RecalcLayout();
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else if(containerItem.ContainerControl is MenuPanel)
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((MenuPanel)containerItem.ContainerControl).RecalcSize();
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else if(containerItem.ContainerControl is BarBaseControl)
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((BarBaseControl)containerItem.ContainerControl).RecalcLayout();
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else if(containerItem.ContainerControl is ItemControl)
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((ItemControl)containerItem.ContainerControl).RecalcLayout();
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else
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{
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containerItem.RecalcSize();
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containerItem.Refresh();
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}
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}
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/// <summary>
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/// Returns insertion index for an item taking in account any system items that are at the end of the collection.
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/// </summary>
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/// <param name="objParent">Parent item</param>
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/// <returns>Returns the index at which an item should be inserted</returns>
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public static int GetAppendPosition(BaseItem objParent)
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{
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int iPos=-1;
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for(int i=objParent.SubItems.Count-1;i>=0;i--)
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{
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if(objParent.SubItems[i].SystemItem)
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iPos=i;
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else
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break;
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}
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return iPos;
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}
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}
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}
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