1 /* $OpenBSD: ex_screen.c,v 1.7 2009/10/27 23:59:47 deraadt Exp $ */
2
3 /*-
4 * Copyright (c) 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 * Copyright (c) 1993, 1994, 1995, 1996
7 * Keith Bostic. All rights reserved.
8 *
9 * See the LICENSE file for redistribution information.
10 */
11
12 #include "config.h"
13
14 #include <sys/types.h>
15 #include <sys/queue.h>
16 #include <sys/time.h>
17
18 #include <bitstring.h>
19 #include <limits.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "../common/common.h"
25 #include "../vi/vi.h"
26
27 /*
28 * ex_bg -- :bg
29 * Hide the screen.
30 *
31 * PUBLIC: int ex_bg(SCR *, EXCMD *);
32 */
33 int
ex_bg(sp,cmdp)34 ex_bg(sp, cmdp)
35 SCR *sp;
36 EXCMD *cmdp;
37 {
38 return (vs_bg(sp));
39 }
40
41 /*
42 * ex_fg -- :fg [file]
43 * Show the screen.
44 *
45 * PUBLIC: int ex_fg(SCR *, EXCMD *);
46 */
47 int
ex_fg(sp,cmdp)48 ex_fg(sp, cmdp)
49 SCR *sp;
50 EXCMD *cmdp;
51 {
52 SCR *nsp;
53 int newscreen;
54
55 newscreen = F_ISSET(cmdp, E_NEWSCREEN);
56 if (vs_fg(sp, &nsp, cmdp->argc ? cmdp->argv[0]->bp : NULL, newscreen))
57 return (1);
58
59 /* Set up the switch. */
60 if (newscreen) {
61 sp->nextdisp = nsp;
62 F_SET(sp, SC_SSWITCH);
63 }
64 return (0);
65 }
66
67 /*
68 * ex_resize -- :resize [+-]rows
69 * Change the screen size.
70 *
71 * PUBLIC: int ex_resize(SCR *, EXCMD *);
72 */
73 int
ex_resize(sp,cmdp)74 ex_resize(sp, cmdp)
75 SCR *sp;
76 EXCMD *cmdp;
77 {
78 adj_t adj;
79
80 switch (FL_ISSET(cmdp->iflags,
81 E_C_COUNT | E_C_COUNT_NEG | E_C_COUNT_POS)) {
82 case E_C_COUNT:
83 adj = A_SET;
84 break;
85 case E_C_COUNT | E_C_COUNT_NEG:
86 adj = A_DECREASE;
87 break;
88 case E_C_COUNT | E_C_COUNT_POS:
89 adj = A_INCREASE;
90 break;
91 default:
92 ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
93 return (1);
94 }
95 return (vs_resize(sp, cmdp->count, adj));
96 }
97
98 /*
99 * ex_sdisplay --
100 * Display the list of screens.
101 *
102 * PUBLIC: int ex_sdisplay(SCR *);
103 */
104 int
ex_sdisplay(sp)105 ex_sdisplay(sp)
106 SCR *sp;
107 {
108 GS *gp;
109 SCR *tsp;
110 int cnt, col, len, sep;
111
112 gp = sp->gp;
113 if ((tsp = CIRCLEQ_FIRST(&gp->hq)) == CIRCLEQ_END(&gp->hq)) {
114 msgq(sp, M_INFO, "149|No background screens to display");
115 return (0);
116 }
117
118 col = len = sep = 0;
119 for (cnt = 1; tsp != (void *)&gp->hq && !INTERRUPTED(sp);
120 tsp = CIRCLEQ_NEXT(tsp, q)) {
121 col += len = strlen(tsp->frp->name) + sep;
122 if (col >= sp->cols - 1) {
123 col = len;
124 sep = 0;
125 (void)ex_puts(sp, "\n");
126 } else if (cnt != 1) {
127 sep = 1;
128 (void)ex_puts(sp, " ");
129 }
130 (void)ex_puts(sp, tsp->frp->name);
131 ++cnt;
132 }
133 if (!INTERRUPTED(sp))
134 (void)ex_puts(sp, "\n");
135 return (0);
136 }
137