/*
* 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() */