1/*-
2 * Copyright (c) 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10#include "config.h"
11
12#ifndef lint
13static const char sccsid[] = "$Id: ex_screen.c,v 10.12 2001/06/25 15:19:19 skimo Exp $";
14#endif /* not lint */
15
16#include <sys/types.h>
17#include <sys/queue.h>
18#include <sys/time.h>
19
20#include <bitstring.h>
21#include <limits.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25
26#include "../common/common.h"
27#include "../vi/vi.h"
28
29/*
30 * ex_bg --	:bg
31 *	Hide the screen.
32 *
33 * PUBLIC: int ex_bg __P((SCR *, EXCMD *));
34 */
35int
36ex_bg(SCR *sp, 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 __P((SCR *, EXCMD *));
46 */
47int
48ex_fg(SCR *sp, EXCMD *cmdp)
49{
50	SCR *nsp;
51	int newscreen;
52
53	newscreen = F_ISSET(cmdp, E_NEWSCREEN);
54	if (vs_fg(sp, &nsp, cmdp->argc ? cmdp->argv[0]->bp : NULL, newscreen))
55		return (1);
56
57	/* Set up the switch. */
58	if (newscreen) {
59		sp->nextdisp = nsp;
60		F_SET(sp, SC_SSWITCH);
61	}
62	return (0);
63}
64
65/*
66 * ex_resize --	:resize [+-]rows
67 *	Change the screen size.
68 *
69 * PUBLIC: int ex_resize __P((SCR *, EXCMD *));
70 */
71int
72ex_resize(SCR *sp, EXCMD *cmdp)
73{
74	adj_t adj;
75
76	switch (FL_ISSET(cmdp->iflags,
77	    E_C_COUNT | E_C_COUNT_NEG | E_C_COUNT_POS)) {
78	case E_C_COUNT:
79		adj = A_SET;
80		break;
81	case E_C_COUNT | E_C_COUNT_NEG:
82		adj = A_DECREASE;
83		break;
84	case E_C_COUNT | E_C_COUNT_POS:
85		adj = A_INCREASE;
86		break;
87	default:
88		ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
89		return (1);
90	}
91	return (vs_resize(sp, cmdp->count, adj));
92}
93
94/*
95 * ex_sdisplay --
96 *	Display the list of screens.
97 *
98 * PUBLIC: int ex_sdisplay __P((SCR *));
99 */
100int
101ex_sdisplay(SCR *sp)
102{
103	GS *gp;
104	SCR *tsp;
105	int cnt, col, len, sep;
106
107	gp = sp->gp;
108	if ((tsp = TAILQ_FIRST(gp->hq)) == NULL) {
109		msgq(sp, M_INFO, "149|No background screens to display");
110		return (0);
111	}
112
113	col = len = sep = 0;
114	for (cnt = 1; tsp != NULL && !INTERRUPTED(sp);
115	    tsp = TAILQ_NEXT(tsp, q)) {
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