1 #include	<stdio.h>
2 #include	"pic.h"
3 #include	"y.tab.h"
4 
5 obj *textgen(void)
6 {
7 	int i, sub, nstr, at, with, hset, invis;
8 	double xwith, ywith, h, w, x0, y0, x1, y1;
9 	obj *p, *ppos;
10 	Attr *ap;
11 
12 	at = with = nstr = hset = invis = 0;
13 	h = getfval("textht");
14 	w = getfval("textwid");
15 	for (i = 0; i < nattr; i++) {
16 		ap = &attr[i];
17 		switch (ap->a_type) {
18 		case HEIGHT:
19 			h = ap->a_val.f;
20 			hset++;
21 			break;
22 		case WIDTH:
23 			w = ap->a_val.f;
24 			break;
25 		case WITH:
26 			with = ap->a_val.i;
27 			break;
28 		case INVIS:
29 			invis = INVIS;
30 			break;
31 		case AT:
32 			ppos = ap->a_val.o;
33 			curx = ppos->o_x;
34 			cury = ppos->o_y;
35 			at++;
36 			break;
37 		case TEXTATTR:
38 			sub = ap->a_sub;
39 			if (ap->a_val.p == NULL)	/* an isolated modifier */
40 				text[ntext-1].t_type = sub;
41 			else {
42 				savetext(sub, ap->a_val.p);
43 				nstr++;
44 			}
45 			break;
46 		}
47 	}
48 	if (hset == 0)		/* no explicit ht cmd */
49 		h *= nstr;
50 	if (with) {
51 		xwith = ywith = 0.0;
52 		switch (with) {
53 		case NORTH:	ywith = -h / 2; break;
54 		case SOUTH:	ywith = h / 2; break;
55 		case EAST:	xwith = -w / 2; break;
56 		case WEST:	xwith = w / 2; break;
57 		case NE:	xwith = -w / 2; ywith = -h / 2; break;
58 		case SE:	xwith = -w / 2; ywith = h / 2; break;
59 		case NW:	xwith = w / 2; ywith = -h / 2; break;
60 		case SW:	xwith = w / 2; ywith = h / 2; break;
61 		}
62 		curx += xwith;
63 		cury += ywith;
64 	}
65 	if (!at) {
66 		if (isright(hvmode))
67 			curx += w / 2;
68 		else if (isleft(hvmode))
69 			curx -= w / 2;
70 		else if (isup(hvmode))
71 			cury += h / 2;
72 		else
73 			cury -= h / 2;
74 	}
75 	x0 = curx - w / 2;
76 	y0 = cury - h / 2;
77 	x1 = curx + w / 2;
78 	y1 = cury + h / 2;
79 	extreme(x0, y0);
80 	extreme(x1, y1);
81 	dprintf("Text h %g w %g at %g,%g\n", h, w, curx, cury);
82 	p = makenode(TEXT, 2);
83 	p->o_attr = invis;
84 	p->o_val[0] = w;
85 	p->o_val[1] = h;
86 	if (isright(hvmode))
87 		curx = x1;
88 	else if (isleft(hvmode))
89 		curx = x0;
90 	else if (isup(hvmode))
91 		cury = y1;
92 	else
93 		cury = y0;
94 	return(p);
95 }
96 
97 obj *troffgen(char *s)	/* save away a string of troff commands */
98 {
99 	savetext(CENTER, s);	/* use the existing text mechanism */
100 	return makenode(TROFF, 0);
101 }
102 
103 void savetext(int t, char *s)	/* record text elements for current object */
104 {
105 	if (ntext >= ntextlist)
106 		text = (Text *) grow((char *) text, "text", ntextlist += 200, sizeof(Text));
107 	text[ntext].t_type = t;
108 	text[ntext].t_val = s;
109 	dprintf("saving %d text %s at %d\n", t, s, ntext);
110 	ntext++;
111 }