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428
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1 /* TTY device functions.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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25 /* Authors: Ben Wing and Chuck Thompson. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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872
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30 #include "device-impl.h"
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428
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31 #include "events.h"
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32 #include "faces.h"
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33 #include "frame.h"
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34 #include "lstream.h"
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35 #include "redisplay.h"
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36 #include "sysdep.h"
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37
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872
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38 #include "console-tty-impl.h"
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800
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39 #include "console-stream.h"
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40
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558
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41 #include "sysfile.h"
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428
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42 #include "syssignal.h" /* for SIGWINCH */
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43
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44 Lisp_Object Qinit_pre_tty_win, Qinit_post_tty_win;
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45
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46
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3092
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47 #ifdef NEW_GC
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48 static const struct memory_description tty_device_data_description_1 [] = {
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49 { XD_END }
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50 };
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51
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52 DEFINE_LRECORD_IMPLEMENTATION ("tty-device", tty_device,
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53 1, /*dumpable-flag*/
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54 0, 0, 0, 0, 0,
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55 tty_device_data_description_1,
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56 Lisp_Tty_Device);
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57 #endif /* NEW_GC */
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58
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428
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59 static void
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60 allocate_tty_device_struct (struct device *d)
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61 {
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3092
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62 #ifdef NEW_GC
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63 d->device_data = alloc_lrecord_type (struct tty_device, &lrecord_tty_device);
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64 #else /* not NEW_GC */
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428
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65 d->device_data = xnew_and_zero (struct tty_device);
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3092
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66 #endif /* not NEW_GC */
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428
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67 }
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68
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69 static void
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2286
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70 tty_init_device (struct device *d, Lisp_Object UNUSED (props))
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428
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71 {
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72 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
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73 Lisp_Object terminal_type = CONSOLE_TTY_DATA (con)->terminal_type;
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74
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75 DEVICE_INFD (d) = CONSOLE_TTY_DATA (con)->infd;
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76 DEVICE_OUTFD (d) = CONSOLE_TTY_DATA (con)->outfd;
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77
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78 allocate_tty_device_struct (d);
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79 init_baud_rate (d);
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80
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81 switch (init_tty_for_redisplay (d, (char *) XSTRING_DATA (terminal_type)))
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82 {
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83 #if 0
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84 case TTY_UNABLE_OPEN_DATABASE:
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85 suppress_early_error_handler_backtrace = 1;
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563
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86 signal_error (Qio_error, "Can't access terminal information database", Qunbound);
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428
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87 break;
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88 #endif
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89 case TTY_TYPE_UNDEFINED:
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90 suppress_early_error_handler_backtrace = 1;
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563
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91 signal_error (Qio_error, "Terminal type undefined (or can't access database?)",
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92 terminal_type);
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428
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93 break;
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94 case TTY_TYPE_INSUFFICIENT:
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95 suppress_early_error_handler_backtrace = 1;
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563
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96 signal_error (Qio_error, "Terminal type not powerful enough to run Emacs",
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97 terminal_type);
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428
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98 break;
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99 case TTY_SIZE_UNSPECIFIED:
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100 suppress_early_error_handler_backtrace = 1;
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563
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101 signal_error (Qio_error, "Can't determine window size of terminal", Qunbound);
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428
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102 break;
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103 case TTY_INIT_SUCCESS:
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104 break;
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105 default:
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2500
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106 ABORT ();
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428
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107 }
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108
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109 init_one_device (d);
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110
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111 /* Run part of the elisp side of the TTY device initialization.
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112 The post-init is run in the tty_after_init_frame() method. */
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113 call0 (Qinit_pre_tty_win);
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114 }
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115
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3092
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116 #ifndef NEW_GC
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428
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117 static void
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118 free_tty_device_struct (struct device *d)
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119 {
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1726
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120 if (d->device_data)
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121 xfree (d->device_data, void *);
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428
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122 }
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123
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124 static void
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125 tty_delete_device (struct device *d)
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126 {
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127 free_tty_device_struct (d);
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128 }
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3092
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129 #endif /* not NEW_GC */
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428
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130
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131 #ifdef SIGWINCH
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132
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133 static SIGTYPE
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2286
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134 tty_device_size_change_signal (int UNUSED (signo))
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428
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135 {
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136 int old_errno = errno;
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137 asynch_device_change_pending++;
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138 #ifdef HAVE_UNIXOID_EVENT_LOOP
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139 signal_fake_event ();
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140 #endif
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141 EMACS_REESTABLISH_SIGNAL (SIGWINCH, tty_device_size_change_signal);
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142 errno = old_errno;
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143 SIGRETURN;
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144 }
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145
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146 /* frame_change_signal does nothing but set a flag that it was called.
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147 When redisplay is called, it will notice that the flag is set and
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148 call handle_pending_device_size_change to do the actual work. */
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149 static void
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150 tty_asynch_device_change (void)
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151 {
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152 Lisp_Object devcons, concons;
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153
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154 DEVICE_LOOP_NO_BREAK (devcons, concons)
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155 {
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156 int width, height;
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157 Lisp_Object tail;
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158 struct device *d = XDEVICE (XCAR (devcons));
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159 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
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160
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161 if (!DEVICE_TTY_P (d))
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162 continue;
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163
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164 get_tty_device_size (d, &width, &height);
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165 if (width > 0 && height > 0
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166 && (CONSOLE_TTY_DATA (con)->width != width
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167 || CONSOLE_TTY_DATA (con)->height != height))
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168 {
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169 CONSOLE_TTY_DATA (con)->width = width;
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170 CONSOLE_TTY_DATA (con)->height = height;
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171
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172 for (tail = DEVICE_FRAME_LIST (d);
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173 !NILP (tail);
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174 tail = XCDR (tail))
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175 {
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176 struct frame *f = XFRAME (XCAR (tail));
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177
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178 /* We know the frame is tty because we made sure that the
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179 device is tty. */
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180 change_frame_size (f, height, width, 1);
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181 }
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182 }
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183 }
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184 }
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185
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186 #endif /* SIGWINCH */
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187
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188 static Lisp_Object
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189 tty_device_system_metrics (struct device *d,
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190 enum device_metrics m)
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191 {
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192 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
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193 switch (m)
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194 {
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195 case DM_size_device:
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196 return Fcons (make_int (CONSOLE_TTY_DATA (con)->width),
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197 make_int (CONSOLE_TTY_DATA (con)->height));
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198 default: /* No such device metric property for TTY devices */
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199 return Qunbound;
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200 }
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201 }
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202
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203 /************************************************************************/
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204 /* initialization */
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205 /************************************************************************/
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206
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207 void
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208 syms_of_device_tty (void)
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209 {
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3092
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210 #ifdef NEW_GC
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211 INIT_LRECORD_IMPLEMENTATION (tty_device);
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212 #endif /* NEW_GC */
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213
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563
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214 DEFSYMBOL (Qinit_pre_tty_win);
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215 DEFSYMBOL (Qinit_post_tty_win);
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428
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216 }
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217
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218 void
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219 console_type_create_device_tty (void)
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220 {
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221 /* device methods */
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222 CONSOLE_HAS_METHOD (tty, init_device);
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3092
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223 #ifndef NEW_GC
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428
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224 CONSOLE_HAS_METHOD (tty, delete_device);
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3092
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225 #endif /* not NEW_GC */
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428
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226 #ifdef SIGWINCH
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227 CONSOLE_HAS_METHOD (tty, asynch_device_change);
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228 #endif /* SIGWINCH */
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229 CONSOLE_HAS_METHOD (tty, device_system_metrics);
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230 }
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231
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232 void
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233 init_device_tty (void)
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234 {
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235 #ifdef SIGWINCH
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236 if (initialized && !noninteractive)
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613
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237 EMACS_SIGNAL (SIGWINCH, tty_device_size_change_signal);
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428
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238 #endif /* SIGWINCH */
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239 }
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