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 13 static 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 */ 35 int 36 ex_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 */ 47 int 48 ex_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 */ 71 int 72 ex_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 */ 100 int 101 ex_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