rect2.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          */
/*                                                                       */
/*      RECT2.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the EraseRect function.                       */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      Robert G. Burrill, 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 EraseRect erases the specified rectangle argR.  The current "pen" 
position is not affected by EraseRect. */

void EraseRect(rect *argR)
{
#define zREPz  0
	rect tempRect;

	if (grafPort.pnLevel < 0) return;	/* nothing to do */

	tempRect = *argR;	/* get rectangle */
	if (globalLevel > 0)
	{
		/* convert from user to global */
		U2GR(tempRect, &tempRect, 0);
	}

	grafBlist.Xmin = tempRect.Xmin;	/* put rectangle in default blit list */
	grafBlist.Ymin = tempRect.Ymin;
	grafBlist.Xmax = tempRect.Xmax;
	grafBlist.Ymax = tempRect.Ymax;

	grafBlit.blitRop = zREPz;	/* set up default blit record */
	grafBlit.blitPat = grafPort.bkPat;
	grafBlit.blitDmap->prFill(&grafBlit);	/* draw filled rectangle */

	grafBlit.blitRop = grafPort.pnMode;	/* restore default blit record */
	grafBlit.blitPat = grafPort.pnPat;
			       
	return;
}