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comparison src/device-tty.c @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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children 9ee227acff29
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-1:000000000000 0:376386a54a3c
1 /* TTY device functions.
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
3 Copyright (C) 1994, 1995 Free Software Foundation, Inc.
4 Copyright (C) 1996 Ben Wing.
5
6 This file is part of XEmacs.
7
8 XEmacs is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with XEmacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 /* Synched up with: Not in FSF. */
24
25 /* Authors: Ben Wing and Chuck Thompson. */
26
27 #include <config.h>
28 #include "lisp.h"
29
30 #include "console-tty.h"
31 #include "console-stream.h"
32 #include "events.h"
33 #include "faces.h"
34 #include "frame.h"
35 #include "lstream.h"
36 #include "redisplay.h"
37 #include "sysdep.h"
38
39 #include "syssignal.h" /* for SIGWINCH */
40
41 #include <errno.h>
42
43 Lisp_Object Qinit_pre_tty_win, Qinit_post_tty_win;
44
45
46 static void
47 allocate_tty_device_struct (struct device *d)
48 {
49 d->device_data =
50 (struct tty_device *) xmalloc (sizeof (struct tty_device));
51
52 /* zero out all slots. */
53 memset (d->device_data, 0, sizeof (struct tty_device));
54 }
55
56 static void
57 tty_init_device (struct device *d, Lisp_Object props)
58 {
59 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
60 Lisp_Object terminal_type = CONSOLE_TTY_DATA (con)->terminal_type;
61
62 DEVICE_INFD (d) = CONSOLE_TTY_DATA (con)->infd;
63 DEVICE_OUTFD (d) = CONSOLE_TTY_DATA (con)->outfd;
64
65 allocate_tty_device_struct (d);
66 init_baud_rate (d);
67
68 switch (init_tty_for_redisplay
69 (d, (char *) string_data (XSTRING (terminal_type))))
70 {
71 #if 0
72 case TTY_UNABLE_OPEN_DATABASE:
73 suppress_early_backtrace = 1;
74 error ("Can't access terminal information database");
75 break;
76 #endif
77 case TTY_TYPE_UNDEFINED:
78 suppress_early_backtrace = 1;
79 error ("Terminal type `%s' undefined (or can't access database?)",
80 string_data (XSTRING (terminal_type)));
81 break;
82 case TTY_TYPE_INSUFFICIENT:
83 suppress_early_backtrace = 1;
84 error ("Terminal type `%s' not powerful enough to run Emacs",
85 string_data (XSTRING (terminal_type)));
86 break;
87 case TTY_SIZE_UNSPECIFIED:
88 suppress_early_backtrace = 1;
89 error ("Can't determine window size of terminal");
90 break;
91 case TTY_INIT_SUCCESS:
92 break;
93 default:
94 abort ();
95 }
96
97 init_one_device (d);
98
99 /* Run part of the elisp side of the TTY device initialization.
100 The post-init is run in the tty_after_init_frame() method. */
101 call0 (Qinit_pre_tty_win);
102 }
103
104 static void
105 free_tty_device_struct (struct device *d)
106 {
107 struct tty_device *td = (struct tty_device *) d->device_data;
108 if (td)
109 xfree (td);
110 }
111
112 static void
113 tty_delete_device (struct device *d)
114 {
115 free_tty_device_struct (d);
116 }
117
118 #ifdef SIGWINCH
119
120 static SIGTYPE
121 tty_device_size_change_signal (int signo)
122 {
123 int old_errno = errno;
124 asynch_device_change_pending++;
125 signal_fake_event ();
126 EMACS_REESTABLISH_SIGNAL (SIGWINCH, tty_device_size_change_signal);
127 errno = old_errno;
128 SIGRETURN;
129 }
130
131 /* frame_change_signal does nothing but set a flag that it was called.
132 When redisplay is called, it will notice that the flag is set and
133 call handle_pending_device_size_change to do the actual work. */
134 static void
135 tty_asynch_device_change (void)
136 {
137 Lisp_Object devcons, concons;
138
139 DEVICE_LOOP_NO_BREAK (devcons, concons)
140 {
141 int width, height;
142 Lisp_Object tail;
143 struct device *d = XDEVICE (XCAR (devcons));
144 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
145
146 if (!DEVICE_TTY_P (d))
147 continue;
148
149 get_tty_device_size (d, &width, &height);
150 if (width > 0 && height > 0)
151 {
152 CONSOLE_TTY_DATA (con)->width = width;
153 CONSOLE_TTY_DATA (con)->height = height;
154
155 for (tail = DEVICE_FRAME_LIST (d);
156 !NILP (tail);
157 tail = XCDR (tail))
158 {
159 struct frame *f = XFRAME (XCAR (tail));
160
161 /* We know the frame is tty because we made sure that the
162 device is tty. */
163 change_frame_size (f, height, width, 1);
164 }
165 }
166 }
167 }
168
169 #endif /* SIGWINCH */
170
171 static int
172 tty_device_pixel_width (struct device *d)
173 {
174 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
175 return CONSOLE_TTY_DATA (con)->width;
176 }
177
178 static int
179 tty_device_pixel_height (struct device *d)
180 {
181 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
182 return CONSOLE_TTY_DATA (con)->height;
183 }
184
185
186 /************************************************************************/
187 /* initialization */
188 /************************************************************************/
189
190 void
191 syms_of_device_tty (void)
192 {
193 defsymbol (&Qinit_pre_tty_win, "init-pre-tty-win");
194 defsymbol (&Qinit_post_tty_win, "init-post-tty-win");
195 }
196
197 void
198 console_type_create_device_tty (void)
199 {
200 /* device methods */
201 CONSOLE_HAS_METHOD (tty, init_device);
202 CONSOLE_HAS_METHOD (tty, delete_device);
203 #ifdef SIGWINCH
204 CONSOLE_HAS_METHOD (tty, asynch_device_change);
205 #endif /* SIGWINCH */
206 CONSOLE_HAS_METHOD (tty, device_pixel_width);
207 CONSOLE_HAS_METHOD (tty, device_pixel_height);
208 }
209
210 void
211 init_device_tty (void)
212 {
213 #ifdef SIGWINCH
214 if (initialized && !noninteractive)
215 signal (SIGWINCH, tty_device_size_change_signal);
216 #endif /* SIGWINCH */
217 }