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