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) "$@" & ;;
  25   esac
  26 }
  27
  28 manage () {
  29   local when=$(date +%s) now
  30   local fail=0 rc report
  31
  32   while :; do
  33     "$@"; rc=$?
  34     case $rc in
  35       0) info "manage $1: successful exit"; break ;;
  36       143) info "manage $1: terminated"; break ;;
  37     esac
  38     now=$(date +%s)
  39     report="rc = $rc"
  40     if (( $now - $when > 5 )); then
  41       fail=0
  42     else
  43       report="$report, early failure"
  44       fail=$(( $fail + 1 ))
  45       if (( $fail >= 5 )); then
  46         info "manage $1: exit ($report), giving up after $fail failures"
  47         break
  48       fi
  49     fi
  50     info "manage $1: exit ($report), restarting"
  51     when=$now
  52   done
  53 }
  54
  55 ## Program choice
  56 pick_program () {
  57   local what=$1; shift
  58   local choice=false
  59   for i in "$@"; do
  60     if type -t >/dev/null "$i"; then choice=$i; break; fi
  61   done
  62   info "pick $what = $choice"
  63   echo "$choice"
  64 }
  65
  66 ###--------------------------------------------------------------------------
  67 ### Parse arguments.
  68
  69 vnc=no
  70 atomtag=
  71 start=yes
  72 wait=yes
  73
  74 for opt; do
  75   case "$opt" in
  76     help)
  77       cat <<EOF
  78 Options:
  79   tag=TAG
  80   [no]trace
  81   [no]info
  82   [no]run
  83   [no]start
  84   [no]wait
  85   [no]vnc
  86 EOF
  87       exit
  88       ;;
  89
  90     tag=*) atomtag=/${opt#tag=} ;;
  91     trace) set -x ;;
  92     notrace) set +x ;;
  93     info | run | start | wait | vnc) eval "$opt=yes" ;;
  94     noinfo | norun | nostart | nowait | novnc) eval "${opt#no}=no" ;;
  95
  96     *) echo "unknown option $opt" >&2; exit 1 ;;
  97   esac
  98 done
  99
 100 ###--------------------------------------------------------------------------
 101 ### Preliminary hook.
 102
 103 if [ -r $HOME/.xinitrc-prehook ]; then
 104   . $HOME/.xinitrc-prehook
 105 fi
 106
 107 ###--------------------------------------------------------------------------
 108 ### Iniitial settings.
 109
 110 ## Assume X sessions are secure.
 111 export __mdw_sechost="`hostname`"
 112
 113 ## Obtain the screen dimensions.
 114 case ",$XWIDTH,$XHEIGHT," in
 115   *,,*) eval $(xscsize -bx) ;;
 116 esac
 117 info "screen size = $XWIDTH x $XHEIGHT"
 118
 119 initialize () {
 120   ## Load the X resource database.
 121   run init xrdb -override $HOME/.Xdefaults
 122
 123   ## Random xsettery.
 124   run init xset b 5 2000 50
 125   run init xset r rate 500 50
 126   run init xset m 2 1
 127
 128   ## Key mappings.
 129   xmodmap $HOME/.xmodmap
 130   if [ -r $HOME/.xmodmap-local ]; then
 131     xmodmap $HOME/.xmodmap-local
 132   fi
 133 }
 134
 135 ###--------------------------------------------------------------------------
 136 ### Start a window manager.
 137
 138 wm=$(pick_program window-manager e16 compiz enlightenment e17 twm)
 139 wmopts=""
 140 case "$wm,$vnc" in
 141   enlightenment,yes | e16,yes)
 142     wmopts="$eopts -econfdir $HOME/.enlightenment-vnc"
 143     ;;
 144 esac
 145
 146 start-e16 () {
 147   run bginit manage $wm $wmopts
 148   win=nil
 149   for i in $(seq 10); do
 150     sleep 1
 151     if eesh version >/dev/null 2>&1; then
 152       win=t
 153       break
 154     fi
 155   done
 156   case $win in
 157     t)
 158       info "$wm started ok"
 159       run init xsetroot -cursor_name left_ptr
 160       ;;
 161     nil)
 162       info "$wm failed to start!"
 163       ;;
 164   esac
 165 }
 166
 167 start-window-manager () {
 168   case $(type -t start-$wm || echo "not-found") in
 169     function)
 170       start-$wm $wmopts
 171       ;;
 172     *)
 173       run bginit manage $wm $wmopts
 174       ;;
 175   esac
 176 }
 177
 178 ###--------------------------------------------------------------------------
 179 ### Random useful clients.
 180
 181 start-clients-local () { :; }
 182
 183 start-clients () {
 184
 185   ## Gnome session.
 186   case "$vnc,$(xfce4-session --version 2>&1),$(gnome-session --version 2>&1)"
 187   in
 188     no,xfce4-session*)
 189       run bginit xfce4-session
 190       ;;
 191     no,*,gnome-session\ 2.3[2-9].* | \
 192     no,*,gnome-session\ 2.4[0-9].* | \
 193     no,*,gnome-session\ 2.[1-9][0-9][0-9]*)
 194       run bginit gnome-session --session mdw
 195       ;;
 196     no,*,gnome-session*)
 197       run bginit gnome-session
 198       ;;
 199   esac
 200
 201   ## Local clients.
 202   start-clients-local
 203 }
 204
 205 ###--------------------------------------------------------------------------
 206 ### Main screen layout.
 207
 208 ## Choose appropriate clients.
 209 emacs=$(pick_program emacs emacs23 emacs24 emacs22 emacs21 emacs)
 210 term=$(pick_program terminal pterm Eterm xterm)
 211
 212 ## Emacs window measurements.
 213 ##
 214 ## e_colwd = basic width of a column in pixels
 215 ## e_hextra = extra horizontal width in pixels
 216 ##      Width of an N-column Emacs frame in pixels will be
 217 ##      N*e_colwd + e_hextra
 218 ## e_colchars = width of a column in Emacs `-geometry' units
 219 ## e_cextra = extra horizontal width in Emacs `-geometry' units
 220 ##      So an N-column frame should be reported to Emacs as being
 221 ##      N*e_colchars + e_cextra geometry units wide
 222 ## e_lineht = height of a character line in pixels
 223 ## e_vextra = number of additional vertical cruft pixels
 224 ##      So an N-line Emacs frame takes N*e_lineht + e_vextra pixels
 225 case "$emacs" in
 226   emacs21 | emacs)
 227     e_colwd=492 e_hextra=34
 228     e_colchars=82 e_cextra=-2
 229     e_lineht=13 e_vextra=52
 230     ;;
 231   emacs22 | emacs23)
 232     e_colwd=492 e_hextra=8
 233     e_colchars=82 e_cextra=-6
 234     e_lineht=13 e_vextra=46
 235     ;;
 236   emacs24)
 237     e_colwd=492 e_hextra=5
 238     e_colchars=82 e_cextra=-6
 239     e_lineht=13 e_vextra=42
 240     ;;
 241 esac
 242
 243 ## Terminal window measurements.
 244 ##
 245 ## t_wd = the window width, in pixels
 246 ## t_lineht, t_vextra = height parameters: if the window is N lines high,
 247 ##      then it will be N*t_lineht + t_vextra pixels high
 248 case "$term" in
 249   pterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-geometry;;
 250   Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;;
 251   xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;;
 252 esac
 253
 254 ## GNOME stuff measurements.
 255 declare -i panelwd=64 xbound=$(( XWIDTH - panelwd ))
 256
 257 ## Choose a width for Emacs.
 258 ##
 259 ## We'd like it to be as wide as possible, allowing for a column of xterms
 260 ## down the right hand side.  However, I'd prefer a double-width Emacs to a
 261 ## single-width Emacs and xterms.  If it's not going to work at all, a single
 262 ## Emacs column will have to do.  Also, there's a strange thing with Emacs21
 263 ## and the toolbar, so we add on some rows which are later mysteriously
 264 ## subtracted.
 265
 266 declare -i ecols="(xbound - t_wd - e_hextra)/e_colwd"
 267 if (( ecols < 2 && xbound > e_colwd * 2 + e_hextra )); then
 268   ecols=2
 269 elif (( ecols < 1 )); then
 270   ecols=1
 271 fi
 272
 273 declare -i \
 274   emacsx="ecols * e_colchars + e_cextra" \
 275   emacsy="(XHEIGHT - e_vextra)/e_lineht"
 276
 277 start-emacs () {
 278   GDK_NATIVE_WINDOWS=1 run bgclients noip \
 279     $emacs -bg black -geometry ${emacsx}x${emacsy}+0+0
 280 }
 281
 282 ## Now place some xterms.
 283 ##
 284 ## A few smaller xterms are in general better than one great big one.  35
 285 ## lines is a good height for most terminals.  25 lines is a minimum.  The
 286 ## strategy for doling out xterms into a column is to make as many 35-liners
 287 ## as we can, until the remaining space would be too small for a 25-liner.
 288 ## If we can get two 25s out of that then we do (largest first); otherwise
 289 ## just make one big one.  We stop at the end of a page, once we've made
 290 ## three xterms.
 291
 292 start-xterms () {
 293
 294   ## Initialize some parameters.
 295   declare -i x="ecols * e_colwd + e_hextra" xb=xbound
 296   declare -i n=0 pgx=0 l h y ht
 297   declare -i hstd="35 * t_lineht + t_vextra" hmin="25 * t_lineht + t_vextra"
 298
 299   ## Do the placement.
 300   while :; do
 301
 302     ## Start a new iteration.
 303     if ((x + t_wd > xb)); then
 304       if ((n >= 3)); then break; fi
 305       x="pgx + XWIDTH" pgx="pgx + XWIDTH" xb="xb + XWIDTH"
 306     fi
 307
 308     ## Make large xterms.
 309     y=0 ht=XHEIGHT
 310     while ((ht - hstd >= hmin)); do
 311       run bgclients $term $geom 80x35+$x+$y
 312       y="y + hstd" ht="ht - hstd" n="n + 1"
 313     done
 314
 315     ## Fill the remaining space.
 316     if ((ht >= 2 * hmin)); then h="ht - hmin"; else h=ht; fi
 317     l="(h - t_vextra)/t_lineht" h="l * t_lineht + t_vextra"
 318     run bgclients $term $geom 80x$l+$x+$y
 319     y="y + h" ht="ht - h" n="n + 1"
 320     if ((ht >= hmin)); then
 321       run bgclients $term $geom 80x25+$x+$y
 322       n="n + 1"
 323     fi
 324     x="x + t_wd"
 325   done
 326 }
 327
 328 ###--------------------------------------------------------------------------
 329 ### Requesters.
 330
 331 req () {
 332   declare title=$1 hist=$2; shift 2
 333   cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") &&
 334   exec "$@" "$cmd"
 335 }
 336
 337 ###--------------------------------------------------------------------------
 338 ### Final waiting.
 339
 340 atom=XINIT_COMMAND$atomtag
 341
 342 xwait () {
 343   while :; do
 344     xatom delete $atom
 345     info "waiting on $atom"
 346     line=$(xatom wait $atom)
 347     info "xatom: $line"
 348
 349     case "$line" in
 350       :help)
 351         xmsg -I -t "xinitrc help" -d "xinitrc commands" - <<EOF &
 352 :help
 353 :emacs :xterms :window-manager :clients
 354 :ask-run :ask-command
 355 :init
 356 :terminal
 357 ! SHELL-COMMAND
 358 CLIENT
 359 EOF
 360         ;;
 361       :emacs | :xterms | :window-manager | :clients)
 362         start-${line#:}
 363         ;;
 364       :terminal)
 365         run bgclients $term
 366         ;;
 367       :init)
 368         initialize
 369         ;;
 370       :exec)
 371         info "restarting xinitrc"
 372         exec "$0" wait nostart
 373         ;;
 374       :ask-run)
 375         req "Shell command" .cmd.hist xcatch -F"Fixed 13" -- sh -c&
 376         ;;
 377       :ask-command)
 378         req "xinit command" .xinit.hist xatom set XINIT_COMMAND$atomtag&
 379         ;;
 380       :*)
 381         xmsg -E -t "xinitrc error" "Unknown command \`$line'" &
 382         ;;
 383       !*)
 384         eval "${line#!}"
 385         ;;
 386       *)
 387         set -- $line
 388         run bgclients "$@"
 389         ;;
 390     esac
 391   done
 392 }
 393
 394 ###--------------------------------------------------------------------------
 395 ### Gnome session care and feeding.
 396
 397 session-running-p () {
 398   dbus-send --session --print-reply --dest=org.freedesktop.DBus / \
 399     org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager \
 400     >/dev/null 2>&1
 401 }
 402
 403 dbus-service-running-p () {
 404   dbus-send >/dev/null 2>&1 --session --print-reply \
 405     --dest=org.freedesktop.DBus / \
 406     org.freedesktop.DBus.GetNameOwner string:$1
 407 }
 408
 409 kill-gnome-session () {
 410   win=nil
 411   while read service object logout; do
 412     if dbus-service-running-p $service; then win=t; break; fi
 413   done <<EOF
 414 org.xfce.SessionManager /org/xfce/SessionManager org.xfce.Session.Manager.Shutdown uint32:1 boolean:false
 415 org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.Logout uint32:2
 416 EOF
 417   case $win in nil) return ;; esac
 418   info "killing session manager"
 419   dbus-send --session --dest=$service $object $logout
 420   for i in 1 2 3 4 5; do
 421     sleep 1
 422     if ! dbus-service-running-p $service; then break; fi
 423   done
 424 }
 425
 426 ###--------------------------------------------------------------------------
 427 ### Actually start things up.
 428
 429 if [ -f $HOME/.xinitrc-local ]; then
 430   . $HOME/.xinitrc-local
 431 fi
 432
 433 case "$start" in
 434   yes)
 435     info "starting standard clients"
 436     initialize
 437     start-window-manager
 438     start-clients
 439     start-emacs
 440     start-xterms
 441     ;;
 442   no)
 443     info "not starting standard clients"
 444     ;;
 445 esac
 446
 447 case "$wait" in
 448   yes)
 449     xwait
 450     kill-gnome-session
 451     ;;
 452   no)
 453     info "not waiting before exit"
 454     ;;
 455 esac
 456
 457 ###----- That's all, folks --------------------------------------------------