view1.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          */
/*                                                                       */
/*      VIEW1.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the SetPort 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 "metfonts.h"

/* Function SetPort sets the specified GrafPort to be the current port.
Also calls PortBitmap to reset the current grafMap. */
void SetPort(metaPort *portPtr)
{
	void PortBitmap(grafMap *ptrBMAP);
	void mwGblCoord(void);
	void mwGblPen(void);
	void PenColor(int argColor);
	void PenMode(int Mode);
	void PlaneMask(long PLNMSK);
	void SetFont( fontRcd *FONT);
	short grafErrValue;

	if (gFlags & gfRgnOpen)
	{	/* region open */
		grafErrValue = c_SetPort + c_RgnOflow;
		nuGrafErr(grafErrValue);
      	return;
	}

	if (portPtr == NULL) portPtr = &defPort;	/* use default port if null */

	thePort = portPtr;	/* Place in GRAFIX_DATA:thePort */
	grafPort = *portPtr;	/* Copy thePort to grafPort shadow */
	PortBitmap(portPtr->portMap);	/* reset bitmap */

	mwGblCoord();	/* update  coordinate xform data */
	mwGblPen();	/* update LocX, LocY in global coords */
	PenColor(grafPort.pnColor);	/* reset pen color */
	PenMode(grafPort.pnMode);	/* reset pen mode */
	SETLINESTYLE(grafPort.pnFlags);	/* refresh current line style vector */
	PlaneMask(grafPort.portMask);	/* reset plane mask */

	grafBlit.blitBack = grafPort.bkColor;	/* set blit record */
	grafBlit.blitPat = grafPort.pnPat;
	grafBlit.blitSmap = grafPort.portMap;
	grafBlit.blitDmap = grafPort.portMap;
	grafBlit.blitPatl = grafPort.portPat;

	grafBlit.blitRegn = grafPort.portRegion;	/* Set the region clipping info */
	if (grafPort.portFlags & pfRgnClip)
	{	/* regions enabled - set flag for regions */
		grafBlit.blitFlags = grafBlit.blitFlags | bfClipRegn;
	}
	else
	{	/* regions not enabled - clear region flag */
		grafBlit.blitFlags = grafBlit.blitFlags & ~bfClipRegn;
	}

	SetFont((fontRcd *)grafPort.txFont);	/* set font */

	return;
}