Annotation of src/lib/libcurses/screen.c, Revision 1.9
1.9 ! blymn 1: /* $NetBSD: screen.c,v 1.8 2002/12/23 12:25:10 jdc Exp $ */
1.1 blymn 2:
3: /*
4: * Copyright (c) 1981, 1993, 1994
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #include <sys/cdefs.h>
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)screen.c 8.2 (blymn) 11/27/2001";
40: #else
1.9 ! blymn 41: __RCSID("$NetBSD: screen.c,v 1.8 2002/12/23 12:25:10 jdc Exp $");
1.1 blymn 42: #endif
43: #endif /* not lint */
44:
45: #include <stdlib.h>
46:
47: #include "curses.h"
48: #include "curses_private.h"
49:
50: /*
51: * set_term --
52: * Change the term to the given screen.
53: *
54: */
55: SCREEN *
56: set_term(SCREEN *new)
57: {
1.4 blymn 58: SCREEN *old_screen = _cursesi_screen;
1.1 blymn 59:
60: if (_cursesi_screen != NULL) {
61: /* save changes made to the current screen... */
62: old_screen->echoit = __echoit;
63: old_screen->pfast = __pfast;
64: old_screen->rawmode = __rawmode;
65: old_screen->noqch = __noqch;
66: old_screen->nca = __nca;
67: old_screen->winlistp = __winlistp;
68: old_screen->COLS = COLS;
69: old_screen->LINES = LINES;
70: old_screen->COLORS = COLORS;
71: old_screen->COLOR_PAIRS = COLOR_PAIRS;
72: old_screen->GT = __GT;
73: old_screen->NONL = __NONL;
74: old_screen->UPPERCASE = __UPPERCASE;
75: }
1.5 blymn 76:
1.1 blymn 77: _cursesi_screen = new;
1.5 blymn 78:
1.1 blymn 79: __echoit = new->echoit;
80: __pfast = new->pfast;
81: __rawmode = new->rawmode;
82: __noqch = new->noqch;
83: __nca = new->nca;
84: COLS = new->COLS;
85: LINES = new->LINES;
86: COLORS = new->COLORS;
87: COLOR_PAIRS = new->COLOR_PAIRS;
88: __GT = new->GT;
89: __NONL = new->NONL;
90: __UPPERCASE = new->UPPERCASE;
91:
92: _cursesi_resetterm(new);
1.5 blymn 93:
1.1 blymn 94: __winlistp = new->winlistp;
95:
96: curscr = new->curscr;
97: clearok(curscr, new->clearok);
98: stdscr = new->stdscr;
99: __virtscr = new->__virtscr;
100:
101: _cursesi_reset_acs(new);
102:
103: #ifdef DEBUG
104: __CTRACE("initscr: LINES = %d, COLS = %d\n", LINES, COLS);
105: #endif
106:
107: return old_screen;
108: }
109:
110: /*
111: * newterm --
112: * Set up a new screen.
113: *
114: */
115: SCREEN *
116: newterm(char *type, FILE *outfd, FILE *infd)
117: {
118: SCREEN *new_screen;
119: char *sp;
120:
121: sp = type;
122: if ((type == NULL) && (sp = getenv("TERM")) == NULL)
123: return NULL;
1.5 blymn 124:
1.1 blymn 125: if ((new_screen = (SCREEN *) malloc(sizeof(SCREEN))) == NULL)
126: return NULL;
127:
128: new_screen->infd = infd;
129: new_screen->outfd = outfd;
130: new_screen->echoit = 1;
131: new_screen->pfast = new_screen->rawmode = new_screen->noqch = 0;
132: new_screen->nca = A_NORMAL;
133: new_screen->color_type = COLOR_NONE;
1.7 jdc 134: new_screen->COLOR_PAIRS = 0;
1.1 blymn 135: new_screen->old_mode = 2;
136: new_screen->stdbuf = NULL;
137: new_screen->stdscr = NULL;
138: new_screen->curscr = NULL;
139: new_screen->__virtscr = NULL;
140: new_screen->curwin = 0;
1.6 itojun 141: new_screen->notty = FALSE;
1.9 ! blymn 142: new_screen->half_delay = FALSE;
1.5 blymn 143:
1.1 blymn 144: if (_cursesi_gettmode(new_screen) == ERR)
145: goto error_exit;
146:
147: if (_cursesi_setterm((char *)sp, new_screen) == ERR)
148: goto error_exit;
149:
150: /* Need either homing or cursor motion for refreshes */
151: if (!new_screen->tc_ho && !new_screen->tc_cm)
152: goto error_exit;
1.5 blymn 153:
1.1 blymn 154: new_screen->winlistp = NULL;
155:
156: if ((new_screen->curscr = __newwin(new_screen, new_screen->LINES,
1.8 jdc 157: new_screen->COLS, 0, 0, FALSE)) == ERR)
1.1 blymn 158: goto error_exit;
159:
160: if ((new_screen->stdscr = __newwin(new_screen, new_screen->LINES,
1.8 jdc 161: new_screen->COLS, 0, 0, FALSE)) == ERR) {
1.1 blymn 162: delwin(new_screen->curscr);
163: goto error_exit;
164: }
165:
166: if ((new_screen->__virtscr = __newwin(new_screen, new_screen->LINES,
1.8 jdc 167: new_screen->COLS, 0, 0, FALSE)) == ERR) {
1.1 blymn 168: delwin(new_screen->curscr);
169: delwin(new_screen->stdscr);
170: goto error_exit;
171: }
172:
173: __init_getch(new_screen);
174:
175: __init_acs(new_screen);
176:
177: __set_stophandler();
178:
179: /*
180: * bleh - it seems that apps expect the first newterm to set
181: * up the curses screen.... emulate this.
182: */
1.3 blymn 183: if (_cursesi_screen == NULL || _cursesi_screen->endwin) {
1.1 blymn 184: set_term(new_screen);
185: }
1.5 blymn 186:
1.1 blymn 187: #ifdef DEBUG
188: __CTRACE("newterm: LINES = %d, COLS = %d\n", LINES, COLS);
189: #endif
190: __startwin(new_screen);
191:
192: return new_screen;
193:
194: error_exit:
195: free(new_screen);
196: return NULL;
197: }
198:
199: /*
200: * delscreen --
201: * Free resources used by the given screen and destroy it.
202: *
203: */
204: void
205: delscreen(SCREEN *screen)
206: {
207: struct __winlist *list, *np;
208:
209: /* free up the termcap entry stuff */
210: t_freent(screen->cursesi_genbuf);
211:
212: /* walk the window list and kill all the parent windows */
213: for (list = screen->winlistp; list != NULL; list = list->nextp) {
214: if (list->winp->orig == NULL)
215: delwin(list->winp);
216: }
217:
218: /* free the windows list structures */
219: for (list = screen->winlistp; list;) {
220: np = list->nextp;
221: free(list);
222: list = np;
223: }
1.5 blymn 224:
1.1 blymn 225: /* free the storage of the keymaps */
226: _cursesi_free_keymap(screen->base_keymap);
227:
228: free(screen->stdbuf);
229: free(screen);
230: }
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