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- #include <stdio.h>
- #include "pic.h"
- #include "y.tab.h"
- obj *textgen(void)
- {
- int i, sub, nstr, at, with, hset, invis;
- double xwith, ywith, h, w, x0, y0, x1, y1;
- obj *p, *ppos;
- static double prevh = 0;
- static double prevw = 0;
- Attr *ap;
- at = with = nstr = hset = invis = 0;
- h = getfval("textht");
- w = getfval("textwid");
- for (i = 0; i < nattr; i++) {
- ap = &attr[i];
- switch (ap->a_type) {
- case HEIGHT:
- h = ap->a_val.f;
- hset++;
- break;
- case WIDTH:
- w = ap->a_val.f;
- break;
- case WITH:
- with = ap->a_val.i;
- break;
- case INVIS:
- invis = INVIS;
- break;
- case AT:
- ppos = ap->a_val.o;
- curx = ppos->o_x;
- cury = ppos->o_y;
- at++;
- break;
- case TEXTATTR:
- sub = ap->a_sub;
- if (ap->a_val.p == NULL) /* an isolated modifier */
- text[ntext-1].t_type = sub;
- else {
- savetext(sub, ap->a_val.p);
- nstr++;
- }
- break;
- }
- }
- if (hset == 0) /* no explicit ht cmd */
- h *= nstr;
- if (with) {
- xwith = ywith = 0.0;
- switch (with) {
- case NORTH: ywith = -h / 2; break;
- case SOUTH: ywith = h / 2; break;
- case EAST: xwith = -w / 2; break;
- case WEST: xwith = w / 2; break;
- case NE: xwith = -w / 2; ywith = -h / 2; break;
- case SE: xwith = -w / 2; ywith = h / 2; break;
- case NW: xwith = w / 2; ywith = -h / 2; break;
- case SW: xwith = w / 2; ywith = h / 2; break;
- }
- curx += xwith;
- cury += ywith;
- }
- if (!at) {
- if (isright(hvmode))
- curx += w / 2;
- else if (isleft(hvmode))
- curx -= w / 2;
- else if (isup(hvmode))
- cury += h / 2;
- else
- cury -= h / 2;
- }
- x0 = curx - w / 2;
- y0 = cury - h / 2;
- x1 = curx + w / 2;
- y1 = cury + h / 2;
- extreme(x0, y0);
- extreme(x1, y1);
- dprintf("Text h %g w %g at %g,%g\n", h, w, curx, cury);
- p = makenode(TEXT, 2);
- p->o_attr = invis;
- p->o_val[0] = w;
- p->o_val[1] = h;
- if (isright(hvmode))
- curx = x1;
- else if (isleft(hvmode))
- curx = x0;
- else if (isup(hvmode))
- cury = y1;
- else
- cury = y0;
- prevh = h;
- prevw = w;
- return(p);
- }
- obj *troffgen(char *s) /* save away a string of troff commands */
- {
- savetext(CENTER, s); /* use the existing text mechanism */
- return makenode(TROFF, 0);
- }
- void savetext(int t, char *s) /* record text elements for current object */
- {
- if (ntext >= ntextlist)
- text = (Text *) grow((char *) text, "text", ntextlist += 200, sizeof(Text));
- text[ntext].t_type = t;
- text[ntext].t_val = s;
- dprintf("saving %d text %s at %d\n", t, s, ntext);
- ntext++;
- }
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