view0.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          */
/*                                                                       */
/*      VIEW0.c                                          1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the mwDFP & InitPort functions.               */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      Robert G. Burrill, Accelerated Technology, Inc.                  */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*         BobB          11/16/99    Got rid of ANSI compiler warnings   */
/*                                                                       */
/*************************************************************************/

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


/* Function mwDFP set the pen default values. Any and all changes will
happen here to avoid system sync problems. Notice that this module
assumes the relevant pen data areas in the grafPort have been zeroed. */
void mwDFP(metaPort *penPort)
{
	
	/* Manually set the non zero pen fields */
	penPort->pnPat = 1;	/* solidOn */
	penPort->pnFlags = pnShapeFlg;	/* default pen to square */
	penPort->pnColor = -1;	/* white */
	penPort->pnDashRcd = &DashTable[0];	/* default dash style records */

	return;
}


/* Function InitPort initializes the specified MetaPort, argPORT, and makes
it the current port.  The port fields are initialized as follows:

	NAME		TYPE		INITIAL SETTING
	------- 	------- 	-------------------------------------
	portMap		farptr		default grafMap
	portRect	rect		default grafMap limits
	portOrgn	point		(0,0)
	portVirt	rect		default grafMap limits
	portClip	rect		default grafMap limits
	portRgn		farptr		nil (0)
	portPat		farptr		default pattern list
	portMask	long		-1 = all enabled
  	portU2GP	void *()	Ptr to mwVTOGP routine
	portU2GR	void *()	Ptr to mwVTOGR routine
	portG2UP	void *()	Ptr to Gbl2UsrP()
	portG2UR	void *()	Ptr to Gbl2UsrR()
	portFlags	short		origin upperleft
	bkPat		long		0 = solid back color
	bkColor		long		0 
	pnColor		long		-1
	pnLoc		point		(0,0)
	pnSize		point		(0,0) = thin
	pnMode		short		0 = replace
	pnPat		long		1 = solid pen color
  	pnCap       short       0 = flat
  	pnJoin      short       0 = round
	pnLevel		short		0 = visible
	pnFlags		short		pnShapeFlg = square
	pnDash		short		0 = solid
	pnDashRcd	farptr		default dash list
	txFont		farptr		default font buffer
	txFace		short		0 = normal
	txMode		short		0 = replace
	txSpace		short		0
	txBold		short		1
	txScore		short		1
	txUnder		short		1
	txAngle		short		340.0 (-20.0) */
void InitPort(metaPort *argPORT)
{
	void SetPort(metaPort *portPtr);
	void mwV2GP();
	void mwV2GR();
	void mwG2VP();
	void mwG2VR();
	long *portAdrs;
	int i;
	int portSize;

	/* Zero all port fields */
	portSize = sizeof(metaPort) >> 2;
	portAdrs = (long *) argPORT;
	for (i = 0; i < portSize; i++)
	{
		*portAdrs++ = 0;
	}

	/* Now set up the port */
	argPORT->portMap = &defGrafMap;
	argPORT->portPat = &patTable;

	/* set portRect, portClip, virtRect to grafMap limits */
/* BobB 10/22/99 - corrected tthe following
	argPORT->portRect.Xmax = defGrafMap.pixWidth - 1;
	argPORT->portClip.Xmax = defGrafMap.pixWidth - 1;
	argPORT->portVirt.Xmax = defGrafMap.pixWidth - 1;
	argPORT->portRect.Ymax = defGrafMap.pixHeight - 1;
	argPORT->portClip.Ymax = defGrafMap.pixHeight - 1;
	argPORT->portVirt.Ymax = defGrafMap.pixHeight - 1; */
	argPORT->portRect.Xmax = defGrafMap.pixWidth;
	argPORT->portClip.Xmax = defGrafMap.pixWidth;
	argPORT->portVirt.Xmax = defGrafMap.pixWidth;
	argPORT->portRect.Ymax = defGrafMap.pixHeight;
	argPORT->portClip.Ymax = defGrafMap.pixHeight;
	argPORT->portVirt.Ymax = defGrafMap.pixHeight;

	/* set upper left, rect clip on */
	argPORT->portFlags = pfUpper | pfRecClip;

	/* set default virtual coordinate routines */
	argPORT->portU2GP = &mwV2GP;
	argPORT->portU2GR = &mwV2GR;
	argPORT->portG2UP = &mwG2VP;
	argPORT->portG2UR = &mwG2VR;

	/* set default marker data */
	argPORT->mkSize.X = 1;
	argPORT->mkSize.Y = 1;
	argPORT->txBold = 1;
	argPORT->txUnder = 1;
	argPORT->txScore = 1;
	argPORT->txSlant = 3400;

	/* set font to default font buffer */
	argPORT->txFont = (long) defFont;

	argPORT->portMask = 0xFFFFFFFF;

	mwDFP(argPORT);	/* Set the pen default values */

	SetPort(argPORT);	/* Update system */

	return;
}