Powered by ViewCVS 1.0-dev
| 1 : | anton | 1.1 | \ ekey etc. |
| 2 : | |||
| 3 : | \ Copyright (C) 1999 Free Software Foundation, Inc. | ||
| 4 : | |||
| 5 : | \ This file is part of Gforth. | ||
| 6 : | |||
| 7 : | \ Gforth is free software; you can redistribute it and/or | ||
| 8 : | \ modify it under the terms of the GNU General Public License | ||
| 9 : | \ as published by the Free Software Foundation; either version 2 | ||
| 10 : | \ of the License, or (at your option) any later version. | ||
| 11 : | |||
| 12 : | \ This program is distributed in the hope that it will be useful, | ||
| 13 : | \ but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 : | \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 15 : | \ GNU General Public License for more details. | ||
| 16 : | |||
| 17 : | \ You should have received a copy of the GNU General Public License | ||
| 18 : | \ along with this program; if not, write to the Free Software | ||
| 19 : | anton | 1.3 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.1 | |
| 21 : | |||
| 22 : | \ this implementation of EKEY just translates VT100/ANSI escape | ||
| 23 : | \ sequences to ekeys. | ||
| 24 : | |||
| 25 : | \ Caveats: It also translates the sequences if they were not generated | ||
| 26 : | \ by pressing the key; moreover, it waits until a complete sequence or | ||
| 27 : | \ an invalid prefix to a sequence has arrived before reporting true in | ||
| 28 : | \ EKEY? and before completing EKEY. One way to fix this would be to | ||
| 29 : | \ use timeouts when waiting for the next key; however, this may lead | ||
| 30 : | \ to situations in slow networks where single events result in several | ||
| 31 : | \ EKEYs, which appears less desirable to me. | ||
| 32 : | |||
| 33 : | \ The keycode names are compatible with pfe-0.9.14 | ||
| 34 : | |||
| 35 : | : keycode ( "name" -- ; name execution: -- u ) | ||
| 36 : | create ; | ||
| 37 : | |||
| 38 : | keycode k-left | ||
| 39 : | keycode k-right | ||
| 40 : | keycode k-up | ||
| 41 : | keycode k-down | ||
| 42 : | keycode k-home | ||
| 43 : | keycode k-end | ||
| 44 : | \ keycode k-prior \ note: captured by xterm | ||
| 45 : | \ keycode k-next \ note: captured by xterm | ||
| 46 : | keycode k-insert \ not in pfe | ||
| 47 : | \ function/keypad keys | ||
| 48 : | keycode k1 | ||
| 49 : | keycode k2 | ||
| 50 : | keycode k3 | ||
| 51 : | keycode k4 | ||
| 52 : | keycode k5 | ||
| 53 : | keycode k6 | ||
| 54 : | keycode k7 | ||
| 55 : | keycode k8 | ||
| 56 : | keycode k9 | ||
| 57 : | keycode k10 | ||
| 58 : | keycode k11 \ not in pfe | ||
| 59 : | keycode k12 \ not in pfe | ||
| 60 : | \ shifted function/keypad keys have the same key sequences (in xterm) | ||
| 61 : | \ and pfe gives the same keycodes; so what are these keycodes good for? | ||
| 62 : | \ keycode s-k1 | ||
| 63 : | \ keycode s-k2 | ||
| 64 : | \ keycode s-k3 | ||
| 65 : | \ keycode s-k4 | ||
| 66 : | \ keycode s-k5 | ||
| 67 : | \ keycode s-k6 | ||
| 68 : | \ keycode s-k7 | ||
| 69 : | \ keycode s-k8 | ||
| 70 : | \ keycode s-k9 | ||
| 71 : | \ keycode s-k10 | ||
| 72 : | \ keycode s-k11 \ not in pfe | ||
| 73 : | \ keycode s-k12 \ not in pfe | ||
| 74 : | |||
| 75 : | \ helper word | ||
| 76 : | \ print a key sequence: | ||
| 77 : | \ : key-sequence ( -- ) | ||
| 78 : | \ key begin | ||
| 79 : | \ cr dup . emit | ||
| 80 : | \ key? while | ||
| 81 : | \ key | ||
| 82 : | \ repeat ; | ||
| 83 : | |||
| 84 : | create key-buffer 8 chars allot | ||
| 85 : | 2variable key-buffered key-buffer 0 key-buffered 2! | ||
| 86 : | |||
| 87 : | : char-append-buffer ( c addr -- ) | ||
| 88 : | tuck 2@ chars + c! | ||
| 89 : | dup 2@ 1+ rot 2! ; | ||
| 90 : | |||
| 91 : | :noname ( -- c ) | ||
| 92 : | \ buffered key | ||
| 93 : | key-buffered 2@ dup if | ||
| 94 : | 1- 2dup key-buffered 2! | ||
| 95 : | chars + c@ | ||
| 96 : | else | ||
| 97 : | 2drop defers key | ||
| 98 : | then ; | ||
| 99 : | is key | ||
| 100 : | |||
| 101 : | : unkey ( c -- ) | ||
| 102 : | key-buffered char-append-buffer ; | ||
| 103 : | |||
| 104 : | : unkeys ( addr u -- ) | ||
| 105 : | -1 swap 1- -do | ||
| 106 : | dup i chars + c@ unkey | ||
| 107 : | 1 -loop | ||
| 108 : | drop ; | ||
| 109 : | |||
| 110 : | :noname ( -- flag ) | ||
| 111 : | key-buffered 2@ nip 0<> defers key? or ; | ||
| 112 : | is key? | ||
| 113 : | |||
| 114 : | table constant esc-sequences \ and prefixes | ||
| 115 : | |||
| 116 : | create ekey-buffer 8 chars allot | ||
| 117 : | 2variable ekey-buffered | ||
| 118 : | |||
| 119 : | 27 constant #esc | ||
| 120 : | |||
| 121 : | : esc-prefix ( -- u ) | ||
| 122 : | key ekey-buffered char-append-buffer | ||
| 123 : | ekey-buffered 2@ esc-sequences search-wordlist | ||
| 124 : | if | ||
| 125 : | execute exit | ||
| 126 : | else | ||
| 127 : | ekey-buffered 2@ unkeys #esc | ||
| 128 : | then ; | ||
| 129 : | |||
| 130 : | : esc-sequence ( xt addr u -- ; name execution: -- u ) recursive | ||
| 131 : | \ define key "name" and all prefixes | ||
| 132 : | 2dup 1- dup | ||
| 133 : | if | ||
| 134 : | 2dup esc-sequences search-wordlist | ||
| 135 : | if | ||
| 136 : | drop 2drop | ||
| 137 : | else | ||
| 138 : | ['] esc-prefix -rot esc-sequence | ||
| 139 : | then | ||
| 140 : | else | ||
| 141 : | 2drop | ||
| 142 : | then ( xt addr u ) | ||
| 143 : | nextname alias ; | ||
| 144 : | |||
| 145 : | crook | 1.2 | \ nac02dec1999 exclude the escape sequences if we are using crossdoc.fs to generate |
| 146 : | \ a documentation file. Do this because key sequences [ and OR here clash with | ||
| 147 : | \ standard names and so prevent them appearing in the documentation. | ||
| 148 : | [IFUNDEF] put-doc-entry | ||
| 149 : | anton | 1.1 | get-current esc-sequences set-current |
| 150 : | |||
| 151 : | \ esc sequences (derived by using key-sequence in an xterm) | ||
| 152 : | |||
| 153 : | ' k-left s" [D" esc-sequence | ||
| 154 : | ' k-right s" [C" esc-sequence | ||
| 155 : | ' k-up s" [A" esc-sequence | ||
| 156 : | ' k-down s" [B" esc-sequence | ||
| 157 : | ' k-home s" [H" esc-sequence | ||
| 158 : | ' k-end s" [F" esc-sequence | ||
| 159 : | \ ' k-prior s" [5~" esc-sequence \ from linux console | ||
| 160 : | \ ' k-next s" [6~" esc-sequence \ from linux console | ||
| 161 : | ' k-insert s" [2~" esc-sequence | ||
| 162 : | |||
| 163 : | ' k1 s" OP" esc-sequence | ||
| 164 : | ' k2 s" OQ" esc-sequence | ||
| 165 : | ' k3 s" OR" esc-sequence | ||
| 166 : | ' k4 s" OS" esc-sequence | ||
| 167 : | ' k5 s" [15~" esc-sequence | ||
| 168 : | ' k6 s" [17~" esc-sequence | ||
| 169 : | ' k7 s" [18~" esc-sequence | ||
| 170 : | ' k8 s" [19~" esc-sequence | ||
| 171 : | ' k9 s" [20~" esc-sequence | ||
| 172 : | ' k10 s" [21~" esc-sequence | ||
| 173 : | ' k11 s" [23~" esc-sequence | ||
| 174 : | ' k12 s" [24~" esc-sequence | ||
| 175 : | |||
| 176 : | set-current | ||
| 177 : | crook | 1.2 | [ENDIF] |
| 178 : | anton | 1.1 | |
| 179 : | : clear-ekey-buffer ( -- ) | ||
| 180 : | ekey-buffer 0 ekey-buffered 2! ; | ||
| 181 : | |||
| 182 : | crook | 1.2 | : ekey ( -- u ) \ facility-ext e-key |
| 183 : | anton | 1.1 | key dup #esc = |
| 184 : | if | ||
| 185 : | drop clear-ekey-buffer | ||
| 186 : | esc-prefix | ||
| 187 : | then ; | ||
| 188 : | |||
| 189 : | crook | 1.2 | : ekey>char ( u -- u false | c true ) \ facility-ext e-key-to-char |
| 190 : | anton | 1.1 | dup 256 u< ; |
| 191 : | |||
| 192 : | : esc? ( -- flag ) recursive | ||
| 193 : | key? 0= | ||
| 194 : | if | ||
| 195 : | false exit | ||
| 196 : | then | ||
| 197 : | key ekey-buffered char-append-buffer | ||
| 198 : | ekey-buffered 2@ esc-sequences search-wordlist | ||
| 199 : | if | ||
| 200 : | ['] esc-prefix = | ||
| 201 : | if | ||
| 202 : | esc? exit | ||
| 203 : | then | ||
| 204 : | then | ||
| 205 : | true ; | ||
| 206 : | |||
| 207 : | crook | 1.2 | : ekey? ( -- flag ) \ facility-ext e-key-question |
| 208 : | \G Return @code{true} if a keyboard event is available (use | ||
| 209 : | \G @code{ekey} to receive the event), @code{false} otherwise. | ||
| 210 : | anton | 1.1 | key? |
| 211 : | if | ||
| 212 : | key dup #esc = | ||
| 213 : | if | ||
| 214 : | clear-ekey-buffer esc? | ||
| 215 : | ekey-buffered 2@ unkeys | ||
| 216 : | else | ||
| 217 : | true | ||
| 218 : | then | ||
| 219 : | swap unkey | ||
| 220 : | else | ||
| 221 : | false | ||
| 222 : | then ; | ||
| 223 : | |||
| 224 : | \ : test-ekey? | ||
| 225 : | \ begin | ||
| 226 : | \ begin | ||
| 227 : | \ begin | ||
| 228 : | \ key? until | ||
| 229 : | \ ekey? until | ||
| 230 : | \ .s ekey .s drop | ||
| 231 : | \ again ; | ||
| 232 : | \ test-ekey? |
|
CVS Admin Powered by ViewCVS 1.0-dev |
ViewCVS and CVS Help |