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