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