1 #include "a.h"
2
3 /*
4 * 5. Vertical spacing.
5 */
6
7 /* set vertical baseline spacing */
8 void
vs(int v)9 vs(int v)
10 {
11 if(v == 0)
12 v = getnr(L(".v0"));
13 nr(L(".v0"), getnr(L(".v")));
14 nr(L(".v"), v);
15 }
16
17 void
r_vs(int argc,Rune ** argv)18 r_vs(int argc, Rune **argv)
19 {
20 if(argc < 2)
21 vs(eval(L("12p")));
22 else if(argv[1][0] == '+')
23 vs(getnr(L(".v"))+evalscale(argv[1]+1, 'p'));
24 else if(argv[1][0] == '-')
25 vs(getnr(L(".v"))-evalscale(argv[1]+1, 'p'));
26 else
27 vs(evalscale(argv[1], 'p'));
28 }
29
30 /* set line spacing */
31 void
ls(int v)32 ls(int v)
33 {
34 if(v == 0)
35 v = getnr(L(".ls0"));
36 nr(L(".ls0"), getnr(L(".ls")));
37 nr(L(".ls"), v);
38 }
39 void
r_ls(int argc,Rune ** argv)40 r_ls(int argc, Rune **argv)
41 {
42 ls(argc < 2 ? 0 : eval(argv[1]));
43 }
44
45 /* .sp - space vertically */
46 /* .sv - save a contiguous vertical block */
47 void
sp(int v)48 sp(int v)
49 {
50 Rune buf[100];
51 double fv;
52
53 br();
54 fv = v * 1.0/UPI;
55 if(fv > 5)
56 fv = eval(L("1v")) * 1.0/UPI;
57 runesnprint(buf, nelem(buf), "<p style=\"margin-top: 0; margin-bottom: %.2fin\"></p>\n", fv);
58 outhtml(buf);
59 }
60 void
r_sp(int argc,Rune ** argv)61 r_sp(int argc, Rune **argv)
62 {
63 if(getnr(L(".ns")))
64 return;
65 if(argc < 2)
66 sp(eval(L("1v")));
67 else{
68 if(argv[1][0] == '|'){
69 /* XXX if there's no output yet, do the absolute! */
70 if(verbose)
71 warn("ignoring absolute .sp %d", eval(argv[1]+1));
72 return;
73 }
74 sp(evalscale(argv[1], 'v'));
75 }
76 }
77
78 void
r_ns(int argc,Rune ** argv)79 r_ns(int argc, Rune **argv)
80 {
81 USED(argc);
82 USED(argv);
83 nr(L(".ns"), 1);
84 }
85
86 void
r_rs(int argc,Rune ** argv)87 r_rs(int argc, Rune **argv)
88 {
89 USED(argc);
90 USED(argv);
91 nr(L(".ns"), 0);
92 }
93
94 void
t5init(void)95 t5init(void)
96 {
97 addreq(L("vs"), r_vs, -1);
98 addreq(L("ls"), r_ls, -1);
99 addreq(L("sp"), r_sp, -1);
100 addreq(L("sv"), r_sp, -1);
101 addreq(L("os"), r_nop, -1);
102 addreq(L("ns"), r_ns, 0);
103 addreq(L("rs"), r_rs, 0);
104
105 nr(L(".v"), eval(L("12p")));
106 nr(L(".v0"), eval(L("12p")));
107 nr(L(".ls"), 1);
108 nr(L(".ls0"), 1);
109 }
110
111