Subversion Repositories planix.SVN

#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++;
}