1/*	$OpenBSD: ex_screen.c,v 1.10 2016/01/06 22:28:52 millert 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 */
33int
34ex_bg(SCR *sp, EXCMD *cmdp)
35{
36	return (vs_bg(sp));
37}
38
39/*
40 * ex_fg --	:fg [file]
41 *	Show the screen.
42 *
43 * PUBLIC: int ex_fg(SCR *, EXCMD *);
44 */
45int
46ex_fg(SCR *sp, EXCMD *cmdp)
47{
48	SCR *nsp;
49	int newscreen;
50
51	newscreen = F_ISSET(cmdp, E_NEWSCREEN);
52	if (vs_fg(sp, &nsp, cmdp->argc ? cmdp->argv[0]->bp : NULL, newscreen))
53		return (1);
54
55	/* Set up the switch. */
56	if (newscreen) {
57		sp->nextdisp = nsp;
58		F_SET(sp, SC_SSWITCH);
59	}
60	return (0);
61}
62
63/*
64 * ex_resize --	:resize [+-]rows
65 *	Change the screen size.
66 *
67 * PUBLIC: int ex_resize(SCR *, EXCMD *);
68 */
69int
70ex_resize(SCR *sp, EXCMD *cmdp)
71{
72	adj_t adj;
73
74	switch (FL_ISSET(cmdp->iflags,
75	    E_C_COUNT | E_C_COUNT_NEG | E_C_COUNT_POS)) {
76	case E_C_COUNT:
77		adj = A_SET;
78		break;
79	case E_C_COUNT | E_C_COUNT_NEG:
80		adj = A_DECREASE;
81		break;
82	case E_C_COUNT | E_C_COUNT_POS:
83		adj = A_INCREASE;
84		break;
85	default:
86		ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
87		return (1);
88	}
89	return (vs_resize(sp, cmdp->count, adj));
90}
91
92/*
93 * ex_sdisplay --
94 *	Display the list of screens.
95 *
96 * PUBLIC: int ex_sdisplay(SCR *);
97 */
98int
99ex_sdisplay(SCR *sp)
100{
101	GS *gp;
102	SCR *tsp;
103	int cnt, col, len, sep;
104
105	gp = sp->gp;
106	if (TAILQ_EMPTY(&gp->hq)) {
107		msgq(sp, M_INFO, "No background screens to display");
108		return (0);
109	}
110
111	col = len = sep = 0;
112	cnt = 1;
113	TAILQ_FOREACH(tsp, &gp->hq, q) {
114		if (INTERRUPTED(sp))
115			break;
116		col += len = strlen(tsp->frp->name) + sep;
117		if (col >= sp->cols - 1) {
118			col = len;
119			sep = 0;
120			(void)ex_puts(sp, "\n");
121		} else if (cnt != 1) {
122			sep = 1;
123			(void)ex_puts(sp, " ");
124		}
125		(void)ex_puts(sp, tsp->frp->name);
126		++cnt;
127	}
128	if (!INTERRUPTED(sp))
129		(void)ex_puts(sp, "\n");
130	return (0);
131}
132