1 #include <stdio.h>
2 #include "pic.h"
3 #include "y.tab.h"
4
textgen(void)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 static double prevh = 0;
11 static double prevw = 0;
12 Attr *ap;
13
14 at = with = nstr = hset = invis = 0;
15 h = getfval("textht");
16 w = getfval("textwid");
17 for (i = 0; i < nattr; i++) {
18 ap = &attr[i];
19 switch (ap->a_type) {
20 case HEIGHT:
21 h = ap->a_val.f;
22 hset++;
23 break;
24 case WIDTH:
25 w = ap->a_val.f;
26 break;
27 case WITH:
28 with = ap->a_val.i;
29 break;
30 case INVIS:
31 invis = INVIS;
32 break;
33 case AT:
34 ppos = ap->a_val.o;
35 curx = ppos->o_x;
36 cury = ppos->o_y;
37 at++;
38 break;
39 case TEXTATTR:
40 sub = ap->a_sub;
41 if (ap->a_val.p == NULL) /* an isolated modifier */
42 text[ntext-1].t_type = sub;
43 else {
44 savetext(sub, ap->a_val.p);
45 nstr++;
46 }
47 break;
48 }
49 }
50 if (hset == 0) /* no explicit ht cmd */
51 h *= nstr;
52 if (with) {
53 xwith = ywith = 0.0;
54 switch (with) {
55 case NORTH: ywith = -h / 2; break;
56 case SOUTH: ywith = h / 2; break;
57 case EAST: xwith = -w / 2; break;
58 case WEST: xwith = w / 2; break;
59 case NE: xwith = -w / 2; ywith = -h / 2; break;
60 case SE: xwith = -w / 2; ywith = h / 2; break;
61 case NW: xwith = w / 2; ywith = -h / 2; break;
62 case SW: xwith = w / 2; ywith = h / 2; break;
63 }
64 curx += xwith;
65 cury += ywith;
66 }
67 if (!at) {
68 if (isright(hvmode))
69 curx += w / 2;
70 else if (isleft(hvmode))
71 curx -= w / 2;
72 else if (isup(hvmode))
73 cury += h / 2;
74 else
75 cury -= h / 2;
76 }
77 x0 = curx - w / 2;
78 y0 = cury - h / 2;
79 x1 = curx + w / 2;
80 y1 = cury + h / 2;
81 extreme(x0, y0);
82 extreme(x1, y1);
83 dprintf("Text h %g w %g at %g,%g\n", h, w, curx, cury);
84 p = makenode(TEXT, 2);
85 p->o_attr = invis;
86 p->o_val[0] = w;
87 p->o_val[1] = h;
88 if (isright(hvmode))
89 curx = x1;
90 else if (isleft(hvmode))
91 curx = x0;
92 else if (isup(hvmode))
93 cury = y1;
94 else
95 cury = y0;
96 prevh = h;
97 prevw = w;
98 return(p);
99 }
100
troffgen(char * s)101 obj *troffgen(char *s) /* save away a string of troff commands */
102 {
103 savetext(CENTER, s); /* use the existing text mechanism */
104 return makenode(TROFF, 0);
105 }
106
savetext(int t,char * s)107 void savetext(int t, char *s) /* record text elements for current object */
108 {
109 if (ntext >= ntextlist)
110 text = (Text *) grow((char *) text, "text", ntextlist += 200, sizeof(Text));
111 text[ntext].t_type = t;
112 text[ntext].t_val = s;
113 dprintf("saving %d text %s at %d\n", t, s, ntext);
114 ntext++;
115 }
116