mdw@git.distorted.org.uk Git - profile/blob - dot/xinitrc

   1 #! /bin/bash
   2 ###
   3 ### X startup script
   4
   5 ###--------------------------------------------------------------------------
   6 ### Utility functions.
   7
   8 ## Progress indicators.
   9 info=yes
  10 info () {
  11   case $info in yes) echo "- $*" >&2 ;; esac
  12 }
  13
  14 run=yes
  15 run () {
  16   local what=$1; shift
  17   local bg=no
  18
  19   case $what in bg*) bg=yes what=${what#bg} ;; esac
  20   info "run $what: $*"
  21
  22   case "$run,$bg" in
  23     yes,no) "$@" ;;
  24     yes,yes) "$@" & ;;
  25   esac
  26 }
  27
  28 ## Program choice
  29 pick_program () {
  30   local what=$1; shift
  31   local choice=false
  32   for i in "$@"; do
  33     if type -t >/dev/null "$i"; then choice=$i; break; fi
  34   done
  35   info "pick $what = $choice"
  36   echo "$choice"
  37 }
  38
  39 ###--------------------------------------------------------------------------
  40 ### Parse arguments.
  41
  42 vnc=no
  43 atomtag=
  44 start=yes
  45 wait=yes
  46
  47 for opt; do
  48   case "$opt" in
  49     help)
  50       cat <<EOF
  51 Options:
  52   tag=TAG
  53   [no]trace
  54   [no]info
  55   [no]run
  56   [no]start
  57   [no]wait
  58   [no]vnc
  59 EOF
  60       exit
  61       ;;
  62
  63     tag=*) atomtag=/${opt#tag=} ;;
  64     trace) set -x ;;
  65     notrace) set +x ;;
  66     info | run | start | wait | vnc) eval "$opt=yes" ;;
  67     noinfo | norun | nostart | nowait | novnc) eval "${opt#no}=no" ;;
  68
  69     *) echo "unknown option $opt" >&2; exit 1 ;;
  70   esac
  71 done
  72
  73 ###--------------------------------------------------------------------------
  74 ### Iniitial settings.
  75
  76 ## Assume X sessions are secure.
  77 export __mdw_sechost="`hostname`"
  78
  79 ## Obtain the screen dimensions.
  80 case ",$XWIDTH,$XHEIGHT," in
  81   *,,*) eval $(xscsize -bx) ;;
  82 esac
  83 info "screen size = $XWIDTH x $XHEIGHT"
  84
  85 initialize () {
  86   ## Load the X resource database.
  87   run init xrdb -override $HOME/.Xdefaults
  88
  89   ## Random xsettery.
  90   run init xset b 10 2000 50
  91   run init xset r rate 500 50
  92   run init xset m 2 1
  93
  94   ## Key mappings.
  95   xmodmap -e 'keysym BackSpace = BackSpace BackSpace'
  96
  97   ## Gnome settings.
  98   case $vnc in no) run bginit gnome-settings-daemon ;; esac
  99 }
 100
 101 ###--------------------------------------------------------------------------
 102 ### Start a window manager.
 103
 104 wm=$(pick_program window-manager enlightenment e16 twm)
 105 wmopts=""
 106 case "$wm,$vnc" in
 107   enlightenment,yes | e16,yes)
 108     wmopts="$eopts -econfdir $HOME/.enlightenment-vnc"
 109     ;;
 110 esac
 111
 112 start-e16 () {
 113   run bginit $wm $wmopts
 114   win=nil
 115   for i in $(seq 10); do
 116     if eesh version >/dev/null 2>&1; then
 117       win=t
 118       break
 119     fi
 120     sleep 1
 121   done
 122   case $win in
 123     t)
 124       info "$wm started ok"
 125       run init xsetroot -cursor_name left_ptr
 126       ;;
 127     nil)
 128       info "$wm failed to start!"
 129       ;;
 130   esac
 131 }
 132
 133 start-window-manager () {
 134   case $(type -t start-$wm || echo "not-found") in
 135     function)
 136       start-$wm $wmopts
 137       ;;
 138     *)
 139       run bginit $wm $wmopts
 140       ;;
 141   esac
 142 }
 143
 144 ###--------------------------------------------------------------------------
 145 ### Random useful clients.
 146
 147 start-clients-local () { :; }
 148
 149 start-clients () {
 150   ## Mail notification.
 151   run bginit mail-notification
 152
 153   ## Policykit authentication agent.
 154   agent=/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
 155   if [ -x $agent ]; then run bginit $agent; fi
 156
 157   ## System monitor.
 158   case $vnc in no) run bginit gkrellm ;; esac
 159
 160   ## Screensaver.
 161   case $vnc in
 162     no)
 163       run init xscreensaver-command -exit
 164       run bginit xscreensaver -no-splash
 165       ;;
 166   esac
 167
 168   ## Panel.
 169   case $vnc in no) run bginit gnome-panel ;; esac
 170
 171   ## System tray.
 172   ## run bginit stalonetray
 173
 174   ## Local clients.
 175   start-clients-local
 176 }
 177
 178 ###--------------------------------------------------------------------------
 179 ### Main screen layout.
 180
 181 ## Choose appropriate clients.
 182 emacs=$(pick_program emacs emacs23 emacs22 emacs21 emacs)
 183 term=$(pick_program terminal pterm Eterm xterm)
 184
 185 ## Emacs window measurements.
 186 case "$emacs" in
 187   emacs21 | emacs)
 188     e_colwd=492 e_hextra=34
 189     e_colchars=82 e_cextra=-2
 190     e_lineht=13 e_vextra=52
 191     ;;
 192   emacs22 | emacs23)
 193     e_colwd=492 e_hextra=8
 194     e_colchars=82 e_cextra=-6
 195     e_lineht=13 e_vextra=46
 196     ;;
 197 esac
 198
 199 ## Terminal window measurements.
 200 case "$term" in
 201   pterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-geometry;;
 202   Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;;
 203   xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;;
 204 esac
 205
 206 ## GNOME stuff measurements.
 207 declare -i xbound="XWIDTH - 113"
 208
 209 ## Choose a width for Emacs.
 210 ##
 211 ## We'd like it to be as wide as possible, allowing for a column of xterms
 212 ## down the right hand side.  However, I'd prefer a double-width Emacs to a
 213 ## single-width Emacs and xterms.  If it's not going to work at all, a single
 214 ## Emacs column will have to do.  Also, there's a strange thing with Emacs21
 215 ## and the toolbar, so we add on some rows which are later mysteriously
 216 ## subtracted.
 217
 218 declare -i ecols="(xbound - t_wd - e_hextra)/e_colwd"
 219 if (( ecols < 2 && xbound > e_colwd * 2 + e_hextra )); then
 220   ecols=2
 221 elif (( ecols < 1 )); then
 222   ecols=1
 223 fi
 224
 225 declare -i \
 226   emacsx="ecols * e_colchars + e_cextra" \
 227   emacsy="(XHEIGHT - e_vextra)/e_lineht"
 228
 229 start-emacs () {
 230   GDK_NATIVE_WINDOWS=1 run bgclients noip \
 231     $emacs -geometry ${emacsx}x${emacsy}+0+0
 232 }
 233
 234 ## Now place some xterms.
 235 ##
 236 ## A few smaller xterms are in general better than one great big one.  35
 237 ## lines is a good height for most terminals.  25 lines is a minimum.  The
 238 ## strategy for doling out xterms into a column is to make as many 35-liners
 239 ## as we can, until the remaining space would be too small for a 25-liner.
 240 ## If we can get two 25s out of that then we do (largest first); otherwise
 241 ## just make one big one.  We stop at the end of a page, once we've made
 242 ## three xterms.
 243
 244 start-xterms () {
 245
 246   ## Initialize some parameters.
 247   declare -i x="ecols * e_colwd + e_hextra" xb=xbound
 248   declare -i n=0 pgx=0 l h y ht
 249   declare -i hstd="35 * t_lineht + t_vextra" hmin="25 * t_lineht + t_vextra"
 250
 251   ## Do the placement.
 252   while :; do
 253
 254     ## Start a new iteration.
 255     if ((x + t_wd > xb)); then
 256       if ((n >= 3)); then break; fi
 257       x="pgx + XWIDTH" pgx="pgx + XWIDTH" xb="xb + XWIDTH"
 258     fi
 259
 260     ## Make large xterms.
 261     y=0 ht=XHEIGHT
 262     while ((ht - hstd >= hmin)); do
 263       run bgclients $term $geom 80x35+$x+$y
 264       y="y + hstd" ht="ht - hstd" n="n + 1"
 265     done
 266
 267     ## Fill the remaining space.
 268     if ((ht >= 2 * hmin)); then h="ht - hmin"; else h=ht; fi
 269     l="(h - t_vextra)/t_lineht" h="l * t_lineht + t_vextra"
 270     run bgclients $term $geom 80x$l+$x+$y
 271     y="y + h" ht="ht - h" n="n + 1"
 272     if ((ht >= hmin)); then
 273       run bgclients $term $geom 80x25+$x+$y
 274       n="n + 1"
 275     fi
 276     x="x + t_wd"
 277   done
 278 }
 279
 280 ###--------------------------------------------------------------------------
 281 ### Requesters.
 282
 283 req () {
 284   declare title=$1 hist=$2; shift 2
 285   cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") &&
 286   exec "$@" "$cmd"
 287 }
 288
 289 ###--------------------------------------------------------------------------
 290 ### Final waiting.
 291
 292 atom=XINIT_COMMAND$atomtag
 293
 294 xwait () {
 295   while :; do
 296     xatom delete $atom
 297     info "waiting on $atom"
 298     line=$(xatom wait $atom)
 299     info "xatom: $line"
 300
 301     case "$line" in
 302       :help)
 303         xmsg -I -t "xinitrc help" -d "xinitrc commands" - <<EOF &
 304 :help
 305 :emacs :xterms :window-manager :clients
 306 :ask-run :ask-command
 307 :init
 308 :terminal
 309 ! SHELL-COMMAND
 310 CLIENT
 311 EOF
 312         ;;
 313       :emacs | :xterms | :window-manager | :clients)
 314         start-${line#:}
 315         ;;
 316       :terminal)
 317         run bgclients $term
 318         ;;
 319       :init)
 320         initialize
 321         ;;
 322       :exec)
 323         info "restarting xinitrc"
 324         exec "$0" wait nostart
 325         ;;
 326       :ask-run)
 327         req "Shell command" .cmd.hist xcatch -FMiscFixed6x13 -- sh -c&
 328         ;;
 329       :ask-command)
 330         req "xinit command" .xinit.hist xatom set XINIT_COMMAND$atomtag&
 331         ;;
 332       :*)
 333         xmsg -E -t "xinitrc error" "Unknown command \`$line'" &
 334         ;;
 335       !*)
 336         eval "${line#!}"
 337         ;;
 338       *)
 339         set -- $line
 340         run bgclients "$@"
 341         ;;
 342     esac
 343   done
 344 }
 345
 346 ###--------------------------------------------------------------------------
 347 ### Actually start things up.
 348
 349 if [ -f $HOME/.xinitrc-local ]; then
 350   . $HOME/.xinitrc-local
 351 fi
 352
 353 case "$start" in
 354   yes)
 355     info "starting standard clients"
 356     initialize
 357     start-window-manager
 358     start-clients
 359     start-emacs
 360     start-xterms
 361     ;;
 362   no)
 363     info "not starting standard clients"
 364     ;;
 365 esac
 366
 367 case "$wait" in
 368   yes)
 369     xwait
 370     ;;
 371   no)
 372     info "not waiting before exit"
 373     ;;
 374 esac
 375
 376 ###----- That's all, folks --------------------------------------------------