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/* Copyright (c) 1992 Regents of the University of California */ |
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|
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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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/* |
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* Polygonal font handling routines |
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*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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#include "standard.h" |
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|
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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 *fgetword(), *getlibpath(); |
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int retainfonts = 0; /* retain loaded fonts? */ |
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static FONT *fontlist = NULL; /* list of loaded fonts */ |
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|
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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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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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|
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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, getlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find font file \"%s\"", fname); |
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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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} |
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|
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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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|
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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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