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 ## Tell things that XFCE is in charge.  This is the most desktoppy thing that
 114 ## I run, so it's not entirely wrong.
 115 : ${XDG_CURRENT_DESKTOP=XFCE}; export XDG_CURRENT_DESKTOP
 116
 117 ## Obtain the screen dimensions.
 118 case ",$XWIDTH,$XHEIGHT," in
 119   *,,*) eval $(xscsize -bx; xscsize -bmx) ;;
 120 esac
 121 case ",$XNSCR," in
 122   ,,)
 123     XNSCR=1 XSCR0_X=0 XSCR0_Y=0 XSCR0_WIDTH=$XWIDTH XSCR0_HEIGHT=$XHEIGHT
 124     ;;
 125 esac
 126 i=0; while (( i < XNSCR )); do
 127   eval "x=\$XSCR${i}_X y=\$XSCR${i}_Y
 128         wd=\$XSCR${i}_WIDTH ht=\$XSCR${i}_HEIGHT"
 129   info "screen #$i = ${wd}x${ht}+${x}+${y}"
 130   i=$(( i + 1 ))
 131 done
 132
 133 initialize () {
 134   ## Load the X resource database.
 135   run init xrdb -override $HOME/.Xdefaults
 136
 137   ## Random xsettery.
 138   run init xset b 5 2000 50
 139   run init xset r rate 500 50
 140   run init xset m 2 1
 141
 142   ## Key mappings.
 143   xmodmap $HOME/.xmodmap
 144   if [ -r $HOME/.xmodmap-local ]; then
 145     xmodmap $HOME/.xmodmap-local
 146   fi
 147 }
 148
 149 ###--------------------------------------------------------------------------
 150 ### Start a window manager.
 151
 152 wm=$(pick_program window-manager e16 compiz enlightenment e17 twm)
 153 wmopts=""
 154 case "$wm,$vnc" in
 155   enlightenment,yes | e16,yes)
 156     wmopts="$eopts -econfdir $HOME/.enlightenment-vnc"
 157     ;;
 158 esac
 159
 160 start-e16 () {
 161   run bginit manage $wm $wmopts
 162   win=nil
 163   for i in $(seq 10); do
 164     sleep 1
 165     if eesh version >/dev/null 2>&1; then
 166       win=t
 167       break
 168     fi
 169   done
 170   case $win in
 171     t)
 172       info "$wm started ok"
 173       run init xsetroot -cursor_name left_ptr
 174       ;;
 175     nil)
 176       info "$wm failed to start!"
 177       ;;
 178   esac
 179 }
 180
 181 start-window-manager () {
 182   case $(type -t start-$wm || echo "not-found") in
 183     function)
 184       start-$wm $wmopts
 185       ;;
 186     *)
 187       run bginit manage $wm $wmopts
 188       ;;
 189   esac
 190 }
 191
 192 ###--------------------------------------------------------------------------
 193 ### Random useful clients.
 194
 195 start-clients-local () { :; }
 196
 197 start-clients () {
 198
 199   ## Gnome session.
 200   case "$vnc,$(xfce4-session --version 2>&1),$(gnome-session --version 2>&1)"
 201   in
 202     no,xfce4-session*)
 203       run bginit xfce4-session
 204       ;;
 205     no,*,gnome-session\ 2.3[2-9].* | \
 206     no,*,gnome-session\ 2.4[0-9].* | \
 207     no,*,gnome-session\ 2.[1-9][0-9][0-9]*)
 208       run bginit gnome-session --session mdw
 209       ;;
 210     no,*,gnome-session*)
 211       run bginit gnome-session
 212       ;;
 213   esac
 214
 215   ## Local clients.
 216   start-clients-local
 217 }
 218
 219 ###--------------------------------------------------------------------------
 220 ### Main screen layout.
 221
 222 ## Choose appropriate clients.
 223 emacs=$(pick_program emacs \
 224   emacs24-lucid emacs23-lucid emacs24 emacs23 emacs22 emacs21 emacs)
 225 term=$(pick_program terminal pterm Eterm xterm)
 226
 227 ## Emacs window measurements.
 228 ##
 229 ## e_colsz = width of a column in characters (from `emacs-width' metaconfig)
 230 ## e_charwd = width of a character in pixels (assume `6x13')
 231 ## e_colextra = additional per-column overhead in pixels
 232 ## e_colextrachars = additional per-column overhead in character units
 233 ## e_colwd = basic width of a column in pixels
 234 ## e_hextra = extra horizontal width in pixels
 235 ##      Width of an N-column Emacs frame in pixels will be
 236 ##      N*e_colwd + e_hextra
 237 ## e_colchars = width of a column in Emacs `-geometry' units
 238 ## e_cextra = extra horizontal width in Emacs `-geometry' units
 239 ##      So an N-column frame should be reported to Emacs as being
 240 ##      N*e_colchars + e_cextra geometry units wide
 241 ## e_lineht = height of a character line in pixels
 242 ## e_vextra = number of additional vertical cruft pixels
 243 ##      So an N-line Emacs frame takes N*e_lineht + e_vextra pixels
 244 e_colsz=$(mdw-conf emacs-width 77) e_charwd=6
 245 e_colextra=30 e_colextrachars=5 e_lineht=13
 246 case "$emacs" in
 247   emacs21 | emacs) e_hextra=34 e_cextra=-2 e_vextra=52 ;;
 248   emacs22 | emacs23) e_hextra=8 e_cextra=-6 e_vextra=46 ;;
 249   emacs24) e_hextra=5 e_cextra=-6 e_vextra=42 ;;
 250   emacs23-lucid) e_hextra=7 e_cextra=-6 e_vextra=48 ;;
 251   emacs24-lucid) e_hextra=7 e_cextra=-5 e_vextra=48 ;;
 252 esac
 253 e_colwd=$(( e_colsz*e_charwd + e_colextra ))
 254 e_colchars=$(( e_colsz + e_colextrachars ))
 255
 256 ## Terminal window measurements.
 257 ##
 258 ## t_wd = the window width, in pixels
 259 ## t_lineht, t_vextra = height parameters: if the window is N lines high,
 260 ##      then it will be N*t_lineht + t_vextra pixels high
 261 case "$term" in
 262   pterm)
 263     ## The pterm width differs according to whether it's linked against Gtk 2
 264     ## or 3.  Let's find out...
 265     case $(ldd $(command -v pterm) | grep libgtk) in
 266       libgtk-2*) t_wd=504 ;;
 267       *) t_wd=500 ;;
 268     esac
 269     t_lineht=13 t_vextra=23 geom=-geometry;;
 270   Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;;
 271   xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;;
 272 esac
 273
 274 ## GNOME stuff measurements.
 275 declare -i panelwd=64 xbound=$(( XWIDTH - panelwd ))
 276
 277 ## Choose a width for Emacs.
 278 ##
 279 ## We're going to make a single frame of Emacs, which will be automatically
 280 ## divvied into columns; the rest of the space will be tiled with xterms.  If
 281 ## we have multiple screens, then Emacs can have the first screen and we'll
 282 ## fill the rest with terminals.  Otherwise, we'll try to have N columns of
 283 ## Emacs, and N - 1 columns of xterms; if that doesn't work, we'll make do
 284 ## with N - 2 columns of xterms.
 285 ##
 286 ## So, let W be the available width; let E and T be the widths of an Emacs
 287 ## column (e_colwd) and terminal (t_wd), respectively, and let E0 be the
 288 ## additive width of Emacs's existence (e_hextra).  If we have more than one
 289 ## screen, then instead, let T be zero.  To start out, then, we let N = 1 +
 290 ## floor((W - E - E0)/(E + T)).  If W - E0 - (N + 1) E - (N - 1)*T >= 0, then
 291 ## we increase N by one.
 292 declare -i lim=XSCR0_WIDTH
 293 if (( lim > xbound )); then lim=xbound; fi
 294 declare -i twd=t_wd; if (( XNSCR > 1 )); then twd=0; fi
 295 declare -i ecols=$(( (lim - e_colwd - e_hextra)/(e_colwd + twd) + 1 ))
 296 if (( lim - e_hextra - (ecols + 1)*e_colwd - (ecols - 1)*twd >= 0 )); then
 297   ecols=$(( ecols + 1 ))
 298 fi
 299
 300 declare -i \
 301   emacsx=$(( ecols*e_colchars + e_cextra )) \
 302   emacsy=$(( (XHEIGHT - e_vextra)/e_lineht ))
 303
 304 start-emacs () {
 305   GDK_NATIVE_WINDOWS=1 run bgclients noip \
 306     $emacs -bg black -geometry ${emacsx}x${emacsy}+${XSCR0_X}+${XSCR0_Y} \
 307     --mdw-splashy-startup
 308 }
 309
 310 ## Now place some xterms.
 311 ##
 312 ## A few smaller xterms are in general better than one great big one.  35
 313 ## lines is a good height for most terminals.  25 lines is a minimum.  The
 314 ## strategy for doling out xterms into a column is to make as many 35-liners
 315 ## as we can, until the remaining space would be too small for a 25-liner.
 316 ## If we can get two 25s out of that then we do (largest first); otherwise
 317 ## just make one big one.  We stop at the end of a page, once we've made
 318 ## three xterms.
 319
 320 start-xterms () {
 321
 322   ## Initialize some parameters.
 323   declare -i x=$(( ecols*e_colwd + e_hextra + XSCR0_X )) xb=xbound
 324   declare -i n=0 pgx=0 l h y ht scr=0 ll=lim
 325   declare -i hstd=$(( 35*t_lineht + t_vextra ))
 326   declare -i hmin=$(( 25*t_lineht + t_vextra ))
 327   declare -i scrx scry scrwd scrht
 328
 329   eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y
 330         scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT"
 331
 332   ## Do the placement.
 333   while :; do
 334
 335     ## Start a new iteration.
 336     if (( x + t_wd > ll )); then
 337       scr=$(( scr + 1 ))
 338       if (( scr >= XNSCR )); then
 339         if (( n >= 3 )); then break; fi
 340         pgx=$(( pgx + XWIDTH )) xb=$(( xb + XWIDTH ))
 341         scr=0
 342       fi
 343       eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y
 344             scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT"
 345       x=$(( pgx + scrx ))
 346       ll=$(( x + scrwd ))
 347       if (( ll > xb )); then ll=xb; fi
 348     fi
 349
 350     ## Make large xterms.
 351     y=scry ht=scrht
 352     while (( ht - hstd >= hmin )); do
 353       run bgclients $term $geom 80x35+$x+$y
 354       y=$(( y + hstd )) ht=$(( ht - hstd )) n=$(( n + 1 ))
 355     done
 356
 357     ## Fill the remaining space.
 358     if (( ht >= 2*hmin )); then h=$(( ht - hmin )); else h=ht; fi
 359     l=$(( (h - t_vextra)/t_lineht )) h=$(( l*t_lineht + t_vextra ))
 360     run bgclients $term $geom 80x$l+$x+$y
 361     y=$(( y + h )) ht=$(( ht - h )) n=$(( n + 1 ))
 362     if ((ht >= hmin)); then
 363       run bgclients $term $geom 80x25+$x+$y
 364       n=$(( n + 1 ))
 365     fi
 366     x=$(( x + t_wd ))
 367   done
 368 }
 369
 370 ###--------------------------------------------------------------------------
 371 ### Requesters.
 372
 373 req () {
 374   declare title=$1 hist=$2; shift 2
 375   cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") &&
 376   exec "$@" "$cmd"
 377 }
 378
 379 ###--------------------------------------------------------------------------
 380 ### Final waiting.
 381
 382 atom=XINIT_COMMAND$atomtag
 383
 384 xwait () {
 385   while :; do
 386     xatom delete $atom
 387     info "waiting on $atom"
 388     line=$(xatom wait $atom)
 389     info "xatom: $line"
 390
 391     case "$line" in
 392       :help)
 393         xmsg -I -t "xinitrc help" -d "xinitrc commands" - <<EOF &
 394 :help
 395 :emacs :xterms :window-manager :clients
 396 :ask-run :ask-command
 397 :init
 398 :terminal
 399 ! SHELL-COMMAND
 400 CLIENT
 401 EOF
 402         ;;
 403       :emacs | :xterms | :window-manager | :clients)
 404         start-${line#:}
 405         ;;
 406       :terminal)
 407         run bgclients $term
 408         ;;
 409       :init)
 410         initialize
 411         ;;
 412       :exec)
 413         info "restarting xinitrc"
 414         exec "$0" wait nostart
 415         ;;
 416       :ask-run)
 417         req "Shell command" .cmd.hist xcatch -F"Fixed 13" -- sh -c&
 418         ;;
 419       :ask-command)
 420         req "xinit command" .xinit.hist xatom set XINIT_COMMAND$atomtag&
 421         ;;
 422       :*)
 423         xmsg -E -t "xinitrc error" "Unknown command \`$line'" &
 424         ;;
 425       !*)
 426         eval "${line#!}"
 427         ;;
 428       *)
 429         set -- $line
 430         run bgclients "$@"
 431         ;;
 432     esac
 433   done
 434 }
 435
 436 ###--------------------------------------------------------------------------
 437 ### Gnome session care and feeding.
 438
 439 session-running-p () {
 440   dbus-send --session --print-reply --dest=org.freedesktop.DBus / \
 441     org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager \
 442     >/dev/null 2>&1
 443 }
 444
 445 dbus-service-running-p () {
 446   dbus-send >/dev/null 2>&1 --session --print-reply \
 447     --dest=org.freedesktop.DBus / \
 448     org.freedesktop.DBus.GetNameOwner string:$1
 449 }
 450
 451 kill-gnome-session () {
 452   win=nil
 453   while read service object logout; do
 454     if dbus-service-running-p $service; then win=t; break; fi
 455   done <<EOF
 456 org.xfce.SessionManager /org/xfce/SessionManager org.xfce.Session.Manager.Shutdown uint32:1 boolean:false
 457 org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.Logout uint32:2
 458 EOF
 459   case $win in nil) return ;; esac
 460   info "killing session manager"
 461   dbus-send --session --dest=$service $object $logout
 462   for i in 1 2 3 4 5; do
 463     sleep 1
 464     if ! dbus-service-running-p $service; then break; fi
 465   done
 466 }
 467
 468 ###--------------------------------------------------------------------------
 469 ### Actually start things up.
 470
 471 if [ -f $HOME/.xinitrc-local ]; then
 472   . $HOME/.xinitrc-local
 473 fi
 474
 475 case "$start" in
 476   yes)
 477     info "starting standard clients"
 478     initialize
 479     start-window-manager
 480     start-clients
 481     start-emacs
 482     start-xterms
 483     ;;
 484   no)
 485     info "not starting standard clients"
 486     ;;
 487 esac
 488
 489 case "$wait" in
 490   yes)
 491     xwait
 492     kill-gnome-session
 493     ;;
 494   no)
 495     info "not waiting before exit"
 496     ;;
 497 esac
 498
 499 ###----- That's all, folks --------------------------------------------------