static char RCSid[] = "$Id: FontFamilyPS.c,v 1.0 91/08/22 15:33:37 gnb Exp $"; 
/*
 * $Source: /export/data/sources/x/At/Plotter/RCS/FontFamilyPS.c,v $
 * 
 * $Log:	FontFamilyPS.c,v $
 * Revision 1.0  91/08/22  15:33:37  gnb
 * Initial revision
 * 
 * 
 */

/*

Copyright 1990,1991 by the Massachusetts Institute of Technology

All rights reserved.

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of the Massachusetts
Institute of Technology (M.I.T.) not be used in advertising or publicity
pertaining to distribution of the software without specific, written
prior permission.

M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

*/
#include <stdio.h>
#ifdef __STDC__
#include <stdlib.h>
#else
extern char *calloc();
#endif 

#ifdef _AtDevelopment_
#include "FontFamilyP.h"
#else
#include <At/FontFamilyP.h>
#endif

static void ReadPSMetrics P((AtFontFamilyInfo *ffi, int face)); 
static void ReadPSMetrics(ffi, face)
AtFontFamilyInfo *ffi;
int face;
{
    char buf[300];
    FILE *f;
    char *status;
    int code, width;

    sprintf(buf,"%s/%s.afm", AFMPATH, ffi->psnames[face]); 
    f = fopen(buf, "r");
    if (f == NULL) {
	perror("Can't read Postscript font metrics");
	exit(-1);
    }

    do {  /* skip preliminary lines */
	status = fgets(buf, 300, f);
	if (status == NULL) break;
	if (strncmp(buf, "Ascender", 8) == 0)
	    sscanf(buf, "Ascender %hd", &ffi->psascents[face]);
	if (strncmp(buf, "Descender", 9) == 0)
	    sscanf(buf, "Descender %hd", &ffi->psdescents[face]);
    } while (strncmp(buf, "StartCharMetrics", 16));

    while (fgets(buf, 300, f)) {  /* read all the char metrics */
	if (strncmp(buf, "EndCharMetrics", 14) == 0) break;
	sscanf(buf, "C %d ; WX %d ;", &code, &width);
	ffi->psmetrics[face][code] = (short)width;
    }
}

static void GetPSMetrics P((AtFontFamily *ff)); 
static void GetPSMetrics(ff)
AtFontFamily *ff;
{
    AtFontFamilyInfo *info;

    info = INFO(ff);
    
    if (info->psmetrics != NULL) return;

    info->psmetrics = (PostscriptMetrics *)calloc(4,sizeof(PostscriptMetrics));

    ReadPSMetrics(info, AtFontPLAIN);
    ReadPSMetrics(info, AtFontBOLD);
    ReadPSMetrics(info, AtFontITALIC);
    ReadPSMetrics(info, AtFontBOLDITALIC);
    *RCSid = *RCSid;		/* Keep gcc quiet */
}


int AtFontPSTextWidth(ff, face, size, str, len)
AtFontFamily *ff;
int face, size;
char *str;
int len;
{
    AtFontFamilyInfo *info;
    int width = 0;
    int i;

    info = INFO(ff);
    if (info->psmetrics == NULL) GetPSMetrics(ff);

    for (i= 0; i < len; i++)
	width += info->psmetrics[face][*str++];

    return (width * AtFontPointSize(ff,size))/1000;
}
    
int AtFontPSAscent(ff, face, size)
AtFontFamily *ff;
int face, size;
{
    AtFontFamilyInfo *info;
    info = INFO(ff);
    if (info->psmetrics == NULL) GetPSMetrics(ff);

    return (info->psascents[face] * AtFontPointSize(ff, size))/1000;
}

int AtFontPSDescent(ff, face, size)
AtFontFamily *ff;
int face, size;
{
    AtFontFamilyInfo *info;
    info = INFO(ff);
    if (info->psmetrics == NULL) GetPSMetrics(ff);

    return (-info->psdescents[face] * AtFontPointSize(ff, size))/1000;
}

    
char *AtFontPSName(ff, face)
AtFontFamily *ff;
int face;
{
    return (INFO(ff)->psnames[face]);
}