line0.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          */
/*                                                                       */
/*      LINE0.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the MOVETO/MOVEREL functions.                 */
/*                                                                       */
/* 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 MOVETO moves the current "pen" position to the specified (X,Y)
screen coordinate. */

void MoveTo( short argX, short argY)
{

	grafPort.pnLoc.X = argX;	/* update shadow port */
	grafPort.pnLoc.Y = argY;
	grafPort.pnDashCnt = 0;		/* reset the dash sequence to the start */

	thePort->pnLoc.X = argX;	/* update user port */
	thePort->pnLoc.Y = argY;
	thePort->pnDashCnt = 0;

	if (globalLevel > 0)
	{
		/* convert from user to global */
		U2GP(argX, argY, &LocX, &LocY, 1);
	}
	else
	{
		LocX = argX;			/* update global pen location */
		LocY = argY;
	}
	return;
}


/* Function MOVEREL moves the current "pen" position the specified (DX,DY)
distance from the current screen position. */

void MoveRel(short argDX, short argDY )
{
	
	grafPort.pnLoc.X += argDX;	/* Pickup and increment */
	grafPort.pnLoc.Y += argDY;

	MoveTo(grafPort.pnLoc.X, grafPort.pnLoc.Y);

	return;
}