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1 /* TTY-specific Lisp objects.
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2 Copyright (C) 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1995, 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not in FSF. */
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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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27 #include "console-tty.h"
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28 #include "insdel.h"
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29 #include "objects-tty.h"
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30
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31 /* An alist mapping from color names to a cons of (FG-STRING, BG-STRING). */
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32 Lisp_Object Vtty_color_alist;
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33 #if 0 /* This stuff doesn't quite work yet */
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34 Lisp_Object Vtty_dynamic_color_fg;
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35 Lisp_Object Vtty_dynamic_color_bg;
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36 #endif
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37
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38 DEFUN ("register-tty-color", Fregister_tty_color, Sregister_tty_color, 3, 3,
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39 0 /*
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40 Register COLOR as a recognized TTY color.
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41 COLOR should be a string.
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42 Strings FG-STRING and BG-STRING should specify the escape sequences to
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43 set the foreground and background to the given color, respectively.
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44 */ )
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45 (color, fg_string, bg_string)
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46 Lisp_Object color, fg_string, bg_string;
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47 {
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48 CHECK_STRING (color);
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49 CHECK_STRING (fg_string);
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50 CHECK_STRING (bg_string);
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51
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52 color = Fintern (color, Qnil);
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53 Vtty_color_alist = Fremassq (color, Vtty_color_alist);
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54 Vtty_color_alist = Fcons (Fcons (color, Fcons (fg_string, bg_string)),
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55 Vtty_color_alist);
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56
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57 return Qnil;
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58 }
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59
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60 DEFUN ("unregister-tty-color", Funregister_tty_color, Sunregister_tty_color,
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61 1, 1, 0 /*
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62 Unregister COLOR as a recognized TTY color.
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63 */ )
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64 (color)
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65 Lisp_Object color;
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66 {
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67 CHECK_STRING (color);
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68
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69 color = Fintern (color, Qnil);
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70 Vtty_color_alist = Fremassq (color, Vtty_color_alist);
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71 return Qnil;
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72 }
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73
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74 DEFUN ("find-tty-color", Ffind_tty_color, Sfind_tty_color, 1, 1, 0 /*
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75 Look up COLOR in the list of registered TTY colors.
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76 If it is found, return a list (FG-STRING BG-STRING) of the escape
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77 sequences used to set the foreground and background to the color, respectively.
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78 If it is not found, return nil.
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79 */ )
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80 (color)
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81 Lisp_Object color;
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82 {
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83 Lisp_Object result;
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84
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85 CHECK_STRING (color);
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86
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87 result = Fassq (Fintern (color, Qnil), Vtty_color_alist);
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88 if (!NILP (result))
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89 return list2 (Fcar (Fcdr (result)), Fcdr (Fcdr (result)));
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90 else
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91 return Qnil;
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92 }
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93
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94 DEFUN ("tty-color-list", Ftty_color_list, Stty_color_list, 0, 0, 0 /*
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95 Return a list of the registered TTY colors.
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96 */ )
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97 ()
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98 {
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99 Lisp_Object result = Qnil;
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100 Lisp_Object rest;
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101
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102 LIST_LOOP (rest, Vtty_color_alist)
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103 {
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104 result = Fcons (Fsymbol_name (XCAR (XCAR (rest))), result);
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105 }
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106
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107 return Fnreverse (result);
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108 }
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109
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110 #if 0
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111
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112 /* This approach is too simplistic. The problem is that the
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113 dynamic color settings apply to *all* text in the default color,
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114 not just the text output after the escape sequence has been given. */
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115
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116 DEFUN ("set-tty-dynamic-color-specs", Fset_tty_dynamic_color_specs,
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117 Sset_tty_dynamic_color_specs, 2, 2, 0 /*
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118 Set the dynamic color specifications for TTY's.
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119 FG and BG should be either nil or vaguely printf-like strings,
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120 where each occurrence of %s is replaced with the color name and each
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121 occurrence of %% is replaced with a single % character.
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122 */ )
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123 (fg, bg)
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124 Lisp_Object fg, bg;
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125 {
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126 if (!NILP (fg))
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127 CHECK_STRING (fg);
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128 if (!NILP (bg))
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129 CHECK_STRING (bg);
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130
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131 Vtty_dynamic_color_fg = fg;
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132 Vtty_dynamic_color_bg = bg;
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133
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134 return Qnil;
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135 }
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136
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137 DEFUN ("tty-dynamic-color-specs", Ftty_dynamic_color_specs,
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138 Stty_dynamic_color_specs, 0, 0, 0 /*
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139 Return the dynamic color specifications for TTY's as a list of (FG BG).
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140 See `set-tty-dynamic-color-specs'.
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141 */ )
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142 ()
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143 {
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144 return list2 (Vtty_dynamic_color_fg, Vtty_dynamic_color_bg);
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145 }
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146
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147 #endif /* 0 */
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148
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149 static int
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150 tty_initialize_color_instance (struct Lisp_Color_Instance *c, Lisp_Object name,
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151 Lisp_Object device, Error_behavior errb)
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152 {
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153 Lisp_Object result;
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154
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155 name = Fintern (name, Qnil);
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156 result = assq_no_quit (name, Vtty_color_alist);
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157
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158 if (NILP (result))
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159 {
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160 #if 0
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161 if (!STRINGP (Vtty_dynamic_color_fg)
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162 && !STRINGP (Vtty_dynamic_color_bg))
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163 #endif
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164 return 0;
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165 }
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166
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167 /* Don't allocate the data until we're sure that we will succeed. */
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168 c->data = malloc_type (struct tty_color_instance_data);
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169 COLOR_INSTANCE_TTY_SYMBOL (c) = name;
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170
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171 return 1;
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172 }
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173
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174 static void
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175 tty_mark_color_instance (struct Lisp_Color_Instance *c,
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176 void (*markobj) (Lisp_Object))
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177 {
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178 ((markobj) (COLOR_INSTANCE_TTY_SYMBOL (c)));
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179 }
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180
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181 static void
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182 tty_print_color_instance (struct Lisp_Color_Instance *c,
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183 Lisp_Object printcharfun,
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184 int escapeflag)
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185 {
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186 }
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187
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188 static void
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189 tty_finalize_color_instance (struct Lisp_Color_Instance *c)
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190 {
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191 if (c->data)
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192 xfree (c->data);
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193 }
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194
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195 static int
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196 tty_color_instance_equal (struct Lisp_Color_Instance *c1,
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197 struct Lisp_Color_Instance *c2,
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198 int depth)
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199 {
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200 return (EQ (COLOR_INSTANCE_TTY_SYMBOL (c1),
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201 COLOR_INSTANCE_TTY_SYMBOL (c2)));
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202 }
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203
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204 static unsigned long
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205 tty_color_instance_hash (struct Lisp_Color_Instance *c, int depth)
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206 {
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207 return LISP_HASH (COLOR_INSTANCE_TTY_SYMBOL (c));
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208 }
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209
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210 static int
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211 tty_valid_color_name_p (struct device *d, Lisp_Object color)
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212 {
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213 return (!NILP (assoc_no_quit (Fintern (color, Qnil), Vtty_color_alist)));
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214 #if 0
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215 || STRINGP (Vtty_dynamic_color_fg)
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216 || STRINGP (Vtty_dynamic_color_bg)
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217 #endif
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218 }
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219
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220
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221 static int
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222 tty_initialize_font_instance (struct Lisp_Font_Instance *f, Lisp_Object name,
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223 Lisp_Object device, Error_behavior errb)
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224 {
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225 Bufbyte *str = string_data (XSTRING (name));
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226 Lisp_Object charset = Qnil;
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227
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228 if (strncmp ((CONST char *) str, "normal", 6))
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229 return 0;
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230 str += 6;
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231 if (*str)
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232 {
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233 return 0;
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234 }
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235
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236 /* Don't allocate the data until we're sure that we will succeed. */
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237 f->data = malloc_type (struct tty_font_instance_data);
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238 FONT_INSTANCE_TTY_CHARSET (f) = charset;
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239 f->width = 1;
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240
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241 f->proportional_p = 0;
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242 f->ascent = f->height = 1;
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243 f->descent = 0;
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244
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245 return 1;
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246 }
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247
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248 static void
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249 tty_mark_font_instance (struct Lisp_Font_Instance *f,
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250 void (*markobj) (Lisp_Object))
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251 {
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252 ((markobj) (FONT_INSTANCE_TTY_CHARSET (f)));
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253 }
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254
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255 static void
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256 tty_print_font_instance (struct Lisp_Font_Instance *f,
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257 Lisp_Object printcharfun,
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258 int escapeflag)
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259 {
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260 }
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261
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262 static void
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263 tty_finalize_font_instance (struct Lisp_Font_Instance *f)
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264 {
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265 if (f->data)
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266 xfree (f->data);
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267 }
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268
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269 static Lisp_Object
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270 tty_list_fonts (Lisp_Object pattern, Lisp_Object device)
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271 {
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272 return list1 (build_string ("normal"));
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273 }
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274
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275
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276 /************************************************************************/
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277 /* initialization */
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278 /************************************************************************/
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279
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280 void
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281 syms_of_objects_tty (void)
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282 {
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283 defsubr (&Sregister_tty_color);
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284 defsubr (&Sunregister_tty_color);
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285 defsubr (&Sfind_tty_color);
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286 defsubr (&Stty_color_list);
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287 #if 0
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288 defsubr (&Sset_tty_dynamic_color_specs);
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289 defsubr (&Stty_dynamic_color_specs);
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290 #endif
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291 }
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292
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293 void
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294 console_type_create_objects_tty (void)
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295 {
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296 /* object methods */
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297 CONSOLE_HAS_METHOD (tty, initialize_color_instance);
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298 CONSOLE_HAS_METHOD (tty, mark_color_instance);
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299 CONSOLE_HAS_METHOD (tty, print_color_instance);
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300 CONSOLE_HAS_METHOD (tty, finalize_color_instance);
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301 CONSOLE_HAS_METHOD (tty, color_instance_equal);
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302 CONSOLE_HAS_METHOD (tty, color_instance_hash);
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303 CONSOLE_HAS_METHOD (tty, valid_color_name_p);
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304
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305 CONSOLE_HAS_METHOD (tty, initialize_font_instance);
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306 CONSOLE_HAS_METHOD (tty, mark_font_instance);
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307 CONSOLE_HAS_METHOD (tty, print_font_instance);
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308 CONSOLE_HAS_METHOD (tty, finalize_font_instance);
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309 CONSOLE_HAS_METHOD (tty, list_fonts);
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310 }
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311
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312 void
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313 vars_of_objects_tty (void)
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314 {
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315 staticpro (&Vtty_color_alist);
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316 Vtty_color_alist = Qnil;
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317
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318 #if 0
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319 staticpro (&Vtty_dynamic_color_fg);
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320 Vtty_dynamic_color_fg = Qnil;
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321
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322 staticpro (&Vtty_dynamic_color_bg);
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323 Vtty_dynamic_color_bg = Qnil;
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324 #endif
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325 }
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