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 ### Preliminary hook.
  75
  76 if [ -r $HOME/.xinitrc-prehook ]; then
  77   . $HOME/.xinitrc-prehook
  78 fi
  79
  80 ###--------------------------------------------------------------------------
  81 ### Iniitial settings.
  82
  83 ## Assume X sessions are secure.
  84 export __mdw_sechost="`hostname`"
  85
  86 ## Obtain the screen dimensions.
  87 case ",$XWIDTH,$XHEIGHT," in
  88   *,,*) eval $(xscsize -bx) ;;
  89 esac
  90 info "screen size = $XWIDTH x $XHEIGHT"
  91
  92 initialize () {
  93   ## Load the X resource database.
  94   run init xrdb -override $HOME/.Xdefaults
  95
  96   ## Random xsettery.
  97   run init xset b 5 2000 50
  98   run init xset r rate 500 50
  99   run init xset m 2 1
 100
 101   ## Key mappings.
 102   xmodmap $HOME/.xmodmap
 103   if [ -r $HOME/.xmodmap-local ]; then
 104     xmodmap $HOME/.xmodmap-local
 105   fi
 106 }
 107
 108 ###--------------------------------------------------------------------------
 109 ### Start a window manager.
 110
 111 wm=$(pick_program window-manager e16 compiz enlightenment e17 twm)
 112 wmopts=""
 113 case "$wm,$vnc" in
 114   enlightenment,yes | e16,yes)
 115     wmopts="$eopts -econfdir $HOME/.enlightenment-vnc"
 116     ;;
 117 esac
 118
 119 start-e16 () {
 120   run bginit $wm $wmopts
 121   win=nil
 122   for i in $(seq 10); do
 123     sleep 1
 124     if eesh version >/dev/null 2>&1; then
 125       win=t
 126       break
 127     fi
 128   done
 129   case $win in
 130     t)
 131       info "$wm started ok"
 132       run init xsetroot -cursor_name left_ptr
 133       ;;
 134     nil)
 135       info "$wm failed to start!"
 136       ;;
 137   esac
 138 }
 139
 140 start-window-manager () {
 141   case $(type -t start-$wm || echo "not-found") in
 142     function)
 143       start-$wm $wmopts
 144       ;;
 145     *)
 146       run bginit $wm $wmopts
 147       ;;
 148   esac
 149 }
 150
 151 ###--------------------------------------------------------------------------
 152 ### Random useful clients.
 153
 154 start-clients-local () { :; }
 155
 156 start-clients () {
 157
 158   ## Gnome session.
 159   case "$vnc,$(gnome-session --version 2>&1)" in
 160     no,gnome-session\ 2.3[2-9].* | \
 161     no,gnome-session\ 2.4[0-9].* | \
 162     no,gnome-session\ 2.[1-9][0-9][0-9]*)
 163       run bginit gnome-session --session mdw
 164       ;;
 165     no,*)
 166       run bginit gnome-session
 167       ;;
 168   esac
 169
 170   ## Local clients.
 171   start-clients-local
 172 }
 173
 174 ###--------------------------------------------------------------------------
 175 ### Main screen layout.
 176
 177 ## Choose appropriate clients.
 178 emacs=$(pick_program emacs emacs23 emacs22 emacs21 emacs)
 179 term=$(pick_program terminal pterm Eterm xterm)
 180
 181 ## Emacs window measurements.
 182 case "$emacs" in
 183   emacs21 | emacs)
 184     e_colwd=492 e_hextra=34
 185     e_colchars=82 e_cextra=-2
 186     e_lineht=13 e_vextra=52
 187     ;;
 188   emacs22 | emacs23)
 189     e_colwd=492 e_hextra=8
 190     e_colchars=82 e_cextra=-6
 191     e_lineht=13 e_vextra=46
 192     ;;
 193 esac
 194
 195 ## Terminal window measurements.
 196 case "$term" in
 197   pterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-geometry;;
 198   Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;;
 199   xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;;
 200 esac
 201
 202 ## GNOME stuff measurements.
 203 declare -i xbound="XWIDTH - 113"
 204
 205 ## Choose a width for Emacs.
 206 ##
 207 ## We'd like it to be as wide as possible, allowing for a column of xterms
 208 ## down the right hand side.  However, I'd prefer a double-width Emacs to a
 209 ## single-width Emacs and xterms.  If it's not going to work at all, a single
 210 ## Emacs column will have to do.  Also, there's a strange thing with Emacs21
 211 ## and the toolbar, so we add on some rows which are later mysteriously
 212 ## subtracted.
 213
 214 declare -i ecols="(xbound - t_wd - e_hextra)/e_colwd"
 215 if (( ecols < 2 && xbound > e_colwd * 2 + e_hextra )); then
 216   ecols=2
 217 elif (( ecols < 1 )); then
 218   ecols=1
 219 fi
 220
 221 declare -i \
 222   emacsx="ecols * e_colchars + e_cextra" \
 223   emacsy="(XHEIGHT - e_vextra)/e_lineht"
 224
 225 start-emacs () {
 226   GDK_NATIVE_WINDOWS=1 run bgclients noip \
 227     $emacs -geometry ${emacsx}x${emacsy}+0+0
 228 }
 229
 230 ## Now place some xterms.
 231 ##
 232 ## A few smaller xterms are in general better than one great big one.  35
 233 ## lines is a good height for most terminals.  25 lines is a minimum.  The
 234 ## strategy for doling out xterms into a column is to make as many 35-liners
 235 ## as we can, until the remaining space would be too small for a 25-liner.
 236 ## If we can get two 25s out of that then we do (largest first); otherwise
 237 ## just make one big one.  We stop at the end of a page, once we've made
 238 ## three xterms.
 239
 240 start-xterms () {
 241
 242   ## Initialize some parameters.
 243   declare -i x="ecols * e_colwd + e_hextra" xb=xbound
 244   declare -i n=0 pgx=0 l h y ht
 245   declare -i hstd="35 * t_lineht + t_vextra" hmin="25 * t_lineht + t_vextra"
 246
 247   ## Do the placement.
 248   while :; do
 249
 250     ## Start a new iteration.
 251     if ((x + t_wd > xb)); then
 252       if ((n >= 3)); then break; fi
 253       x="pgx + XWIDTH" pgx="pgx + XWIDTH" xb="xb + XWIDTH"
 254     fi
 255
 256     ## Make large xterms.
 257     y=0 ht=XHEIGHT
 258     while ((ht - hstd >= hmin)); do
 259       run bgclients $term $geom 80x35+$x+$y
 260       y="y + hstd" ht="ht - hstd" n="n + 1"
 261     done
 262
 263     ## Fill the remaining space.
 264     if ((ht >= 2 * hmin)); then h="ht - hmin"; else h=ht; fi
 265     l="(h - t_vextra)/t_lineht" h="l * t_lineht + t_vextra"
 266     run bgclients $term $geom 80x$l+$x+$y
 267     y="y + h" ht="ht - h" n="n + 1"
 268     if ((ht >= hmin)); then
 269       run bgclients $term $geom 80x25+$x+$y
 270       n="n + 1"
 271     fi
 272     x="x + t_wd"
 273   done
 274 }
 275
 276 ###--------------------------------------------------------------------------
 277 ### Requesters.
 278
 279 req () {
 280   declare title=$1 hist=$2; shift 2
 281   cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") &&
 282   exec "$@" "$cmd"
 283 }
 284
 285 ###--------------------------------------------------------------------------
 286 ### Final waiting.
 287
 288 atom=XINIT_COMMAND$atomtag
 289
 290 xwait () {
 291   while :; do
 292     xatom delete $atom
 293     info "waiting on $atom"
 294     line=$(xatom wait $atom)
 295     info "xatom: $line"
 296
 297     case "$line" in
 298       :help)
 299         xmsg -I -t "xinitrc help" -d "xinitrc commands" - <<EOF &
 300 :help
 301 :emacs :xterms :window-manager :clients
 302 :ask-run :ask-command
 303 :init
 304 :terminal
 305 ! SHELL-COMMAND
 306 CLIENT
 307 EOF
 308         ;;
 309       :emacs | :xterms | :window-manager | :clients)
 310         start-${line#:}
 311         ;;
 312       :terminal)
 313         run bgclients $term
 314         ;;
 315       :init)
 316         initialize
 317         ;;
 318       :exec)
 319         info "restarting xinitrc"
 320         exec "$0" wait nostart
 321         ;;
 322       :ask-run)
 323         req "Shell command" .cmd.hist xcatch -FMiscFixed6x13 -- sh -c&
 324         ;;
 325       :ask-command)
 326         req "xinit command" .xinit.hist xatom set XINIT_COMMAND$atomtag&
 327         ;;
 328       :*)
 329         xmsg -E -t "xinitrc error" "Unknown command \`$line'" &
 330         ;;
 331       !*)
 332         eval "${line#!}"
 333         ;;
 334       *)
 335         set -- $line
 336         run bgclients "$@"
 337         ;;
 338     esac
 339   done
 340 }
 341
 342 ###--------------------------------------------------------------------------
 343 ### Gnome session care and feeding.
 344
 345 session-running-p () {
 346   dbus-send --session --print-reply --dest=org.freedesktop.DBus / \
 347     org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager \
 348     >/dev/null 2>&1
 349 }
 350
 351 kill-gnome-session () {
 352   if session-running-p; then
 353     info "killing Gnome session manager"
 354     dbus-send --session \
 355       --dest=org.gnome.SessionManager /org/gnome/SessionManager \
 356       org.gnome.SessionManager.Logout uint32:2
 357     for i in 1 2 3 4 5; do
 358       sleep 1
 359       if ! session-running-p; then break; fi
 360     done
 361   fi
 362 }
 363
 364 ###--------------------------------------------------------------------------
 365 ### Actually start things up.
 366
 367 if [ -f $HOME/.xinitrc-local ]; then
 368   . $HOME/.xinitrc-local
 369 fi
 370
 371 case "$start" in
 372   yes)
 373     info "starting standard clients"
 374     initialize
 375     start-window-manager
 376     start-clients
 377     start-emacs
 378     start-xterms
 379     ;;
 380   no)
 381     info "not starting standard clients"
 382     ;;
 383 esac
 384
 385 case "$wait" in
 386   yes)
 387     xwait
 388     kill-gnome-session
 389     ;;
 390   no)
 391     info "not waiting before exit"
 392     ;;
 393 esac
 394
 395 ###----- That's all, folks --------------------------------------------------