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#ifndef lint
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static const char RCSid[] = "$Id: xmeta.c,v 1.4 2007/10/08 18:07:57 greg Exp $";
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#endif
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/*
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* Program to output meta-files to X window system.
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*
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* cc -o Xmeta Xmeta.c Xplot.o plot.o mfio.o syscalls.o misc.o
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*
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* 2/26/86
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*/
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#include "rtprocess.h"
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#include "string.h"
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#include "meta.h"
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#include "plot.h"
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extern void init(char *name, char *geom);
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#define overlap(p,xmn,ymn,xmx,ymx) (ov((p)->xy[XMN],(p)->xy[XMX],xmn,xmx) \
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&&ov((p)->xy[YMN],(p)->xy[YMX],ymn,ymx))
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#define ov(mn1,mx1,mn2,mx2) ((mn1)<(mx2)&&(mn2)<(mx1))
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#define XCOM "pexpand +OCIsv -P %s"
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char *progname;
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static short newpage = TRUE;
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static PLIST recording;
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int maxalloc = 0; /* no limit */
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extern void pXFlush(void);
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void
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save(p) /* record primitive */
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PRIMITIVE *p;
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{
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register PRIMITIVE *pnew;
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if ((pnew = palloc()) == NULL)
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error(SYSTEM, "out of memory in save");
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mcopy((char *)pnew, (char *)p, sizeof(PRIMITIVE));
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add(pnew, &recording);
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}
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void
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doglobal(g, sf) /* execute a global command */
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register PRIMITIVE *g;
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int sf;
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{
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switch (g->com) {
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case PEOF:
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return;
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case PDRAW:
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pXFlush();
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break;
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case PEOP:
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endpage();
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plfree(&recording);
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set(SALL, NULL);
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newpage = TRUE;
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return;
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case PSET:
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set(g->arg0, g->args);
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break;
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case PUNSET:
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unset(g->arg0);
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break;
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case PRESET:
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reset(g->arg0);
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break;
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default:
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sprintf(errmsg, "unknown command '%c' in doglobal", g->com);
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error(WARNING, errmsg);
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return;
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}
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if (sf)
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save(g);
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}
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void
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doprim(p, sf) /* plot primitive */
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register PRIMITIVE *p;
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int sf;
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{
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switch (p->com) {
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case PMSTR:
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printstr(p);
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break;
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case PLSEG:
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plotlseg(p);
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break;
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case PRFILL:
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fillrect(p);
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break;
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case PTFILL:
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filltri(p);
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break;
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case PPFILL:
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fillpoly(p);
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break;
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default:
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sprintf(errmsg, "unknown command '%c' in doprim", p->com);
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error(WARNING, errmsg);
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return;
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}
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if (sf) {
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save(p);
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newpage = FALSE;
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}
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}
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void
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plot(infp) /* plot meta-file */
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FILE *infp;
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{
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PRIMITIVE nextp;
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set(SALL, NULL);
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do {
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readp(&nextp, infp);
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while (isprim(nextp.com)) {
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doprim(&nextp, 1);
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readp(&nextp, infp);
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}
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doglobal(&nextp, 1);
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} while (nextp.com != PEOF);
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}
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void
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replay(xmin, ymin, xmax, ymax) /* play back region */
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int xmin, ymin, xmax, ymax;
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{
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register PRIMITIVE *p;
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unset(SALL);
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set(SALL, NULL);
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for (p = recording.ptop; p != NULL; p = p->pnext)
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if (isprim(p->com)) {
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if (overlap(p, xmin, ymin, xmax, ymax))
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doprim(p, 0);
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} else
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doglobal(p, 0);
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}
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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FILE *fp;
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char *geometry = NULL;
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short condonly, conditioned;
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char comargs[500], command[600];
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progname = *argv++;
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argc--;
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condonly = FALSE;
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conditioned = FALSE;
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for ( ; argc; argv++, argc--)
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if (!strcmp(*argv, "-c"))
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condonly = TRUE;
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else if (!strcmp(*argv, "-r"))
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conditioned = TRUE;
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else if (**argv == '=')
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geometry = *argv;
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else
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break;
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if (conditioned) {
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init(progname, geometry);
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if (argc)
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while (argc) {
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fp = efopen(*argv, "r");
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plot(fp);
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fclose(fp);
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argv++;
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argc--;
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}
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else
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plot(stdin);
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} else {
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comargs[0] = '\0';
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while (argc) {
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strcat(comargs, " ");
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strcat(comargs, *argv);
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argv++;
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argc--;
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}
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sprintf(command, XCOM, comargs);
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if (condonly)
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return(system(command));
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else {
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init(progname, geometry);
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if ((fp = popen(command, "r")) == NULL)
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error(SYSTEM, "cannot execute input filter");
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plot(fp);
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pclose(fp);
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}
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}
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if (!newpage)
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endpage();
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return(0);
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}
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