/* 

 * Motif

 *

 * Copyright (c) 1987-2012, The Open Group. All rights reserved.

 *

 * These libraries and programs are free software; you can

 * redistribute them and/or modify them under the terms of the GNU

 * Lesser General Public License as published by the Free Software

 * Foundation; either version 2 of the License, or (at your option)

 * any later version.

 *

 * These libraries and programs are distributed in the hope that

 * they will be useful, but WITHOUT ANY WARRANTY; without even the

 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR

 * PURPOSE. See the GNU Lesser General Public License for more

 * details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with these librararies and programs; if not, write

 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth

 * Floor, Boston, MA 02110-1301 USA

*/ 

/* 

 * HISTORY

*/ 

#ifdef REV_INFO

#ifndef lint

static char rcsid[] = "$XConsortium: GetEdgeCode.c /main/7 1995/07/14 11:33:58 drk $"

#endif

#endif

/***********************************************************************

  	@(#)GetEdgeCode.c	1.3.1.1	Date:1/22/91

  	Author: TAT

	History:

            05/24/90 SJS add to sccs

	Calls:

	Summary:

            Return either TopEdge, BottomEdge, LeftEdge, or RightEdge to

        satisfy the definition of xisInform.edge_code (see xislib.h).  This

        field refers to the edge of the rectangular object that caused a

        pointer Enter or Leave event to occur.

        INPUTS:

            object - pointer to object record

            old_x

            old_y

            new_x

            new_y

        OUTPUTS:

            none

        RETURNS:

            TopEdge, BottomEdge, LeftEdge, or RightEdge

************************************************************************/

#include "xislib.h"

int xisGetEdgeCode(object,old_x,old_y,new_x,new_y)

XisObjectRecord *object;

int old_x,old_y;

int new_x,new_y;

{

    int itmp;

    if ( (old_x < object->x && new_x >= object->x)||

         (old_x >= object->x && new_x < object->x)  )

        return LeftEdge;

    else if ( (old_x >= (itmp = object->x + object->width) && new_x < itmp) ||

              (old_x < itmp && new_x >= itmp) )

        return RightEdge;

    else if ( (old_y < object->y && new_y >= object->y) ||

              (old_y >= object->y && new_y < object->y)   )

        return TopEdge;

    else if ( (old_y >= (itmp = object->y + object->width) && new_y < itmp) ||

              (old_y < itmp && new_y >= itmp) )

        return BottomEdge;

    else

        return UndefinedEdge;

} /* End xisGetEdgeCode() */