reg03.c

nucleus 文件系统,内核和彩色图形系统,在小系统上非常好用

/*************************************************************************/
/*                                                                       */
/*         Copyright (c) 1997 - 1999 Accelerated Technology, Inc.        */
/*                                                                       */
/* PROPRIETARY RIGHTS of Accelerated Technology are involved in the      */
/* subject matter of this material.  All manufacturing, reproduction,    */
/* use, and sales rights pertaining to this subject matter are governed  */
/* by the license agreement.  The recipient of this software implicitly  */
/* accepts the terms of the license.                                     */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                            VERSION          */
/*                                                                       */
/*      REG03.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the OffsetRegion function.                    */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      Giac Dinh, Accelerated Technology, Inc.                          */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*                                                                       */
/*************************************************************************/

#include "meta_wnd.h"
#include "metconst.h"    /* MetaWINDOW Constant & Stucture Definitions */
#include "metports.h"    /* MetaWINDOW Port & Bitmap Definitions */
#include "grafdata.h"
#include "metmacs3.h"


/* Function OffsetRegion offsets the regions rectangle list and bounding box  */
void  OffsetRegion(region *RGN, short dltX, short dltY)
{	
	rect *ptr;

	if( (grafPort.portFlags & pfUpper) == 0)
		dltY = - dltY;
	if( (grafPort.portFlags & pfVirtual) != 0)
		V2GSIZE(dltX,dltY,&dltX,&dltY);	 

	if( (RGN->rgnFlags & rfNull) == 0)
	{
/* Update region bounding box  */		
		RGN->rgnRect.Xmin += dltX;
		RGN->rgnRect.Xmax += dltX;
		RGN->rgnRect.Ymin += dltY;
		RGN->rgnRect.Ymax += dltY;

		ptr = RGN->rgnList;
		do{
			ptr->Xmin += dltX;
			ptr->Xmax += dltX;
			ptr->Ymin += dltY;
			ptr->Ymax += dltY;
			ptr++;
		}while(ptr->Xmin != rgnEOS); /* Check for the end marker  */
	}
	return;
}