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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Polygonal font handling routines |
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*/ |
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#include "standard.h" |
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#include "copyright.h" |
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#include <stdlib.h> |
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#include "paths.h" |
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#include "rtio.h" |
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#include "rterror.h" |
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#include "font.h" |
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#define galloc(nv) (GLYPH *)malloc(sizeof(GLYPH)+2*sizeof(GORD)*(nv)) |
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extern char *libpath; /* list of library directories */ |
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int retainfonts = 0; /* retain loaded fonts? */ |
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extern char *fgetword(); |
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static FONT *fontlist = NULL; /* list of loaded fonts */ |
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getfont(fname) /* return font fname */ |
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char *fname; |
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{ |
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char buf[16]; |
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FILE *fp; |
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char *pathname, *err; |
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char *pathname, *err = NULL; |
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unsigned wsum, hsum, ngly; |
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int gn, ngv; |
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register int gv; |
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int gn, ngv, gv; |
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register GLYPH *g; |
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GORD *gp; |
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register FONT *f; |
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for (f = fontlist; f != NULL; f = f->next) |
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if (!strcmp(f->name, fname)) |
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if (!strcmp(f->name, fname)) { |
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f->nref++; |
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return(f); |
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} |
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/* load the font file */ |
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if ((pathname = getpath(fname, libpath, R_OK)) == NULL) { |
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if ((pathname = getpath(fname, getrlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find font file \"%s\"", fname); |
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error(USER, errmsg); |
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} |
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if (f == NULL) |
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goto memerr; |
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f->name = savestr(fname); |
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f->nref = 1; |
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if ((fp = fopen(pathname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open font file \"%s\"", |
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pathname); |
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error(SYSTEM, errmsg); |
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} |
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wsum = hsum = ngly = 0; |
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while (fgetword(buf,sizeof(buf),fp) != NULL) { /* get each glyph */ |
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if (!isint(buf)) |
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wsum = hsum = ngly = 0; /* get each glyph */ |
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while ((ngv = fgetval(fp, 'i', (char *)&gn)) != EOF) { |
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if (ngv == 0) |
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goto nonint; |
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gn = atoi(buf); |
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if (gn < 1 || gn > 255) { |
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err = "illegal"; |
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goto fonterr; |
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err = "duplicate"; |
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goto fonterr; |
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} |
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if (fgetword(buf,sizeof(buf),fp) == NULL || !isint(buf) || |
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(ngv = atoi(buf)) < 0 || ngv > 32000) { |
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if (fgetval(fp, 'i', (char *)&ngv) <= 0 || |
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ngv < 0 || ngv > 32000) { |
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err = "bad # vertices for"; |
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goto fonterr; |
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} |
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ngv *= 2; |
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gp = gvlist(g); |
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while (ngv--) { |
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if (fgetword(buf,sizeof(buf),fp) == NULL || |
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!isint(buf) || |
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(gv = atoi(buf)) < 0 || gv > 255) { |
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if (fgetval(fp, 'i', (char *)&gv) <= 0 || |
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gv < 0 || gv > 255) { |
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err = "bad vertex for"; |
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goto fonterr; |
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} |
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error(USER, errmsg); |
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memerr: |
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error(SYSTEM, "out of memory in fontglyph"); |
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return NULL; /* pro forma return */ |
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} |
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freefont(fname) /* free a font (free all if fname==NULL) */ |
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char *fname; |
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void |
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freefont(fnt) /* release a font (free all if NULL) */ |
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FONT *fnt; |
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{ |
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FONT head; |
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register FONT *fl, *f; |
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register int i; |
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/* check reference count */ |
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if (fnt != NULL && ((fnt->nref-- > 1) | retainfonts)) |
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return; |
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head.next = fontlist; |
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fl = &head; |
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while ((f = fl->next) != NULL) |
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if (fname == NULL || !strcmp(fname, f->name)) { |
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if ((fnt == NULL) | (fnt == f)) { |
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fl->next = f->next; |
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for (i = 0; i < 256; i++) |
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if (f->fg[i] != NULL) |
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free((char *)f->fg[i]); |
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free((void *)f->fg[i]); |
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freestr(f->name); |
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free((char *)f); |
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free((void *)f); |
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} else |
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fl = f; |
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fontlist = head.next; |
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if (f->fg[*tp++&0xff] == NULL) |
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*sp++ = 0; |
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else |
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linelen += *sp++ = 256; |
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linelen += *sp++ = 255; |
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return(linelen); |
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} |
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int linelen; |
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register GLYPH *gp; |
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linelen = 0; |
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gp = NULL; |
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while (*tp && (gp = f->fg[*tp++&0xff]) == NULL) |
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*sp++ = 0; |
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cis /= 2; |
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linelen = *sp = cis; |
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*sp = cis; |
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while (gp != NULL) { |
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if (gp->nverts) { /* regular character */ |
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linelen += *sp++ += cis - gp->left; |
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int cis; /* target intercharacter spacing */ |
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int nsi; /* minimum number of spaces for indent */ |
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{ |
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register char *end, *tab; |
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register char *end, *tab = NULL; |
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GLYPH *gp; |
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short *nsp; |
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int alen, len, width; |
