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   ## Unclutter.
 143   if type -t >/dev/null unclutter; then run bgclients unclutter -root -idle 7; fi
 144
 145   ## Key mappings.
 146   xmodmap $HOME/.xmodmap
 147   if [ -r $HOME/.xmodmap-local ]; then
 148     xmodmap $HOME/.xmodmap-local
 149   fi
 150 }
 151
 152 ###--------------------------------------------------------------------------
 153 ### Start a window manager.
 154
 155 wm=$(pick_program window-manager e16 compiz enlightenment e17 twm)
 156 wmopts=""
 157 case "$wm,$vnc" in
 158   enlightenment,yes | e16,yes)
 159     wmopts="$eopts -econfdir $HOME/.enlightenment-vnc"
 160     ;;
 161 esac
 162
 163 start-e16 () {
 164   run bginit manage $wm $wmopts
 165   win=nil
 166   for i in $(seq 10); do
 167     sleep 1
 168     if eesh version >/dev/null 2>&1; then
 169       win=t
 170       break
 171     fi
 172   done
 173   case $win in
 174     t)
 175       info "$wm started ok"
 176       run init xsetroot -cursor_name left_ptr
 177       ;;
 178     nil)
 179       info "$wm failed to start!"
 180       ;;
 181   esac
 182 }
 183
 184 start-window-manager () {
 185   case $(type -t start-$wm || echo "not-found") in
 186     function)
 187       start-$wm $wmopts
 188       ;;
 189     *)
 190       run bginit manage $wm $wmopts
 191       ;;
 192   esac
 193 }
 194
 195 ###--------------------------------------------------------------------------
 196 ### Random useful clients.
 197
 198 start-clients-local () { :; }
 199
 200 start-clients () {
 201
 202   ## Gnome session.
 203   case "$vnc,$(xfce4-session --version 2>&1),$(gnome-session --version 2>&1)"
 204   in
 205     no,xfce4-session*)
 206       run bginit xfce4-session
 207       ;;
 208     no,*,gnome-session\ 2.3[2-9].* | \
 209     no,*,gnome-session\ 2.4[0-9].* | \
 210     no,*,gnome-session\ 2.[1-9][0-9][0-9]*)
 211       run bginit gnome-session --session mdw
 212       ;;
 213     no,*,gnome-session*)
 214       run bginit gnome-session
 215       ;;
 216   esac
 217
 218   ## Local clients.
 219   start-clients-local
 220 }
 221
 222 ###--------------------------------------------------------------------------
 223 ### Main screen layout.
 224
 225 ## Choose appropriate clients.
 226 emacs=$(pick_program emacs \
 227   emacs24-lucid emacs23-lucid emacs24 emacs23 emacs22 emacs21 \
 228   emacs-lucid emacs)
 229 term=$(pick_program terminal pterm Eterm xterm)
 230
 231 ## If we fell back to an unversioned Emacs binary, then figure out what
 232 ## version it actually is.
 233 case $emacs in
 234   emacs | emacs-lucid)
 235     set -- $($emacs --version | head -n1)
 236     e_ver=emacs${3%%.*}${emacs#emacs}
 237     ;;
 238   *)
 239     e_ver=$emacs
 240     ;;
 241 esac
 242 info emacs-version = $e_ver
 243
 244 ## Emacs window measurements.
 245 ##
 246 ## e_colsz = width of a column in characters (from `emacs-width' metaconfig)
 247 ## e_charwd = width of a character in pixels (assume `6x13')
 248 ## e_colextra = additional per-column overhead in pixels
 249 ## e_colextrachars = additional per-column overhead in character units
 250 ## e_colwd = basic width of a column in pixels
 251 ## e_hextra = extra horizontal width in pixels
 252 ##      Width of an N-column Emacs frame in pixels will be
 253 ##      N*e_colwd + e_hextra
 254 ## e_colchars = width of a column in Emacs `-geometry' units
 255 ## e_cextra = extra horizontal width in Emacs `-geometry' units
 256 ##      So an N-column frame should be reported to Emacs as being
 257 ##      N*e_colchars + e_cextra geometry units wide
 258 ## e_lineht = height of a character line in pixels
 259 ## e_vextra = number of additional vertical cruft pixels
 260 ##      So an N-line Emacs frame takes N*e_lineht + e_vextra pixels
 261 e_colsz=$(mdw-conf emacs-width 77) e_charwd=6
 262 e_colextra=30 e_colextrachars=5 e_lineht=13
 263 case "$e_ver" in
 264   emacs21 | emacs) e_hextra=34 e_cextra=-2 e_vextra=52 ;;
 265   emacs22 | emacs23) e_hextra=8 e_cextra=-6 e_vextra=46 ;;
 266   emacs24) e_hextra=5 e_cextra=-6 e_vextra=42 ;;
 267   emacs23-lucid) e_hextra=7 e_cextra=-6 e_vextra=48 ;;
 268   emacs24-lucid) e_hextra=7 e_cextra=-5 e_vextra=48 ;;
 269   emacs26-lucid) e_hextra=5 e_cextra=-6 e_vextra=51 ;;
 270 esac
 271 e_colwd=$(( e_colsz*e_charwd + e_colextra ))
 272 e_colchars=$(( e_colsz + e_colextrachars ))
 273
 274 ## Terminal window measurements.
 275 ##
 276 ## t_wd = the window width, in pixels
 277 ## t_lineht, t_vextra = height parameters: if the window is N lines high,
 278 ##      then it will be N*t_lineht + t_vextra pixels high
 279 case "$term" in
 280   pterm)
 281     ## The pterm width differs according to whether it's linked against Gtk 2
 282     ## or 3.  Let's find out...
 283     case $(ldd $(command -v pterm) | grep libgtk) in
 284       *libgtk-2* | *libgtk-x11-2*) t_wd=504 ;;
 285       *) t_wd=503 ;;
 286     esac
 287    t_lineht=13 t_vextra=23 geom=-geometry;;
 288   Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;;
 289   xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;;
 290 esac
 291
 292 ## GNOME stuff measurements.
 293 declare -i panelwd=64 xbound=$(( XWIDTH - panelwd ))
 294
 295 ## Choose a width for Emacs.
 296 ##
 297 ## We're going to make a single frame of Emacs, which will be automatically
 298 ## divvied into columns; the rest of the space will be tiled with xterms.  If
 299 ## we have multiple screens, then Emacs can have the first screen and we'll
 300 ## fill the rest with terminals.  Otherwise, we'll try to have N columns of
 301 ## Emacs, and N - 1 columns of xterms; if that doesn't work, we'll make do
 302 ## with N - 2 columns of xterms.
 303 ##
 304 ## So, let W be the available width; let E and T be the widths of an Emacs
 305 ## column (e_colwd) and terminal (t_wd), respectively, and let E0 be the
 306 ## additive width of Emacs's existence (e_hextra).  If we have more than one
 307 ## screen, then instead, let T be zero.  To start out, then, we let N = 1 +
 308 ## floor((W - E - E0)/(E + T)).  If W - E0 - (N + 1) E - (N - 1)*T >= 0, then
 309 ## we increase N by one.
 310 declare -i lim=XSCR0_WIDTH
 311 if (( lim > xbound )); then lim=xbound; fi
 312 declare -i twd=t_wd; if (( XNSCR > 1 )); then twd=0; fi
 313 declare -i ecols=$(( (lim - e_colwd - e_hextra)/(e_colwd + twd) + 1 ))
 314 if (( lim - e_hextra - (ecols + 1)*e_colwd - (ecols - 1)*twd >= 0 )); then
 315   ecols=$(( ecols + 1 ))
 316 fi
 317
 318 declare -i \
 319   emacsx=$(( ecols*e_colchars + e_cextra )) \
 320   emacsy=$(( (XHEIGHT - e_vextra)/e_lineht ))
 321
 322 start-emacs () {
 323   GDK_NATIVE_WINDOWS=1 run bgclients noip \
 324     $emacs -bg black -geometry ${emacsx}x${emacsy}+${XSCR0_X}+${XSCR0_Y} \
 325     --mdw-splashy-startup
 326 }
 327
 328 ## Now place some xterms.
 329 ##
 330 ## A few smaller xterms are in general better than one great big one.  35
 331 ## lines is a good height for most terminals.  25 lines is a minimum.  The
 332 ## strategy for doling out xterms into a column is to make as many 35-liners
 333 ## as we can, until the remaining space would be too small for a 25-liner.
 334 ## If we can get two 25s out of that then we do (largest first); otherwise
 335 ## just make one big one.  We stop at the end of a page, once we've made
 336 ## three xterms.
 337
 338 start-xterms () {
 339
 340   ## Initialize some parameters.
 341   declare -i x=$(( ecols*e_colwd + e_hextra + XSCR0_X )) xb=xbound
 342   declare -i n=0 pgx=0 l h y ht scr=0 ll=lim
 343   declare -i hstd=$(( 35*t_lineht + t_vextra ))
 344   declare -i hmin=$(( 25*t_lineht + t_vextra ))
 345   declare -i scrx scry scrwd scrht
 346
 347   eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y
 348         scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT"
 349
 350   ## Do the placement.
 351   while :; do
 352
 353     ## Start a new iteration.
 354     if (( x + t_wd > ll )); then
 355       scr=$(( scr + 1 ))
 356       if (( scr >= XNSCR )); then
 357         if (( n >= 3 )); then break; fi
 358         pgx=$(( pgx + XWIDTH )) xb=$(( xb + XWIDTH ))
 359         scr=0
 360       fi
 361       eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y
 362             scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT"
 363       x=$(( pgx + scrx ))
 364       ll=$(( x + scrwd ))
 365       if (( ll > xb )); then ll=xb; fi
 366     fi
 367
 368     ## Make large xterms.
 369     y=scry ht=scrht
 370     while (( ht - hstd >= hmin )); do
 371       run bgclients $term $geom 80x35+$x+$y
 372       y=$(( y + hstd )) ht=$(( ht - hstd )) n=$(( n + 1 ))
 373     done
 374
 375     ## Fill the remaining space.
 376     if (( ht >= 2*hmin )); then h=$(( ht - hmin )); else h=ht; fi
 377     l=$(( (h - t_vextra)/t_lineht )) h=$(( l*t_lineht + t_vextra ))
 378     run bgclients $term $geom 80x$l+$x+$y
 379     y=$(( y + h )) ht=$(( ht - h )) n=$(( n + 1 ))
 380     if ((ht >= hmin)); then
 381       run bgclients $term $geom 80x25+$x+$y
 382       n=$(( n + 1 ))
 383     fi
 384     x=$(( x + t_wd ))
 385   done
 386 }
 387
 388 ###--------------------------------------------------------------------------
 389 ### Requesters.
 390
 391 req () {
 392   declare title=$1 hist=$2; shift 2
 393   cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") &&
 394   exec "$@" "$cmd"
 395 }
 396
 397 ###--------------------------------------------------------------------------
 398 ### Final waiting.
 399
 400 atom=XINIT_COMMAND$atomtag
 401
 402 xwait () {
 403   while :; do
 404     xatom delete $atom
 405     info "waiting on $atom"
 406     line=$(xatom wait $atom)
 407     info "xatom: $line"
 408
 409     case "$line" in
 410       :help)
 411         xmsg -I -t "xinitrc help" -d "xinitrc commands" - <<EOF &
 412 :help
 413 :emacs :xterms :window-manager :clients
 414 :ask-run :ask-command
 415 :init
 416 :terminal
 417 ! SHELL-COMMAND
 418 CLIENT
 419 EOF
 420         ;;
 421       :emacs | :xterms | :window-manager | :clients)
 422         start-${line#:}
 423         ;;
 424       :terminal)
 425         run bgclients $term
 426         ;;
 427       :init)
 428         initialize
 429         ;;
 430       :exec)
 431         info "restarting xinitrc"
 432         exec "$0" wait nostart
 433         ;;
 434       :ask-run)
 435         req "Shell command" .cmd.hist xcatch -F"Fixed 13" -- sh -c&
 436         ;;
 437       :ask-command)
 438         req "xinit command" .xinit.hist xatom set XINIT_COMMAND$atomtag&
 439         ;;
 440       :*)
 441         xmsg -E -t "xinitrc error" "Unknown command \`$line'" &
 442         ;;
 443       !*)
 444         eval "${line#!}"
 445         ;;
 446       *)
 447         eval "set -- $line"
 448         run bgclients "$@"
 449         ;;
 450     esac
 451   done
 452 }
 453
 454 ###--------------------------------------------------------------------------
 455 ### Gnome session care and feeding.
 456
 457 session-running-p () {
 458   dbus-send --session --print-reply --dest=org.freedesktop.DBus / \
 459     org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager \
 460     >/dev/null 2>&1
 461 }
 462
 463 dbus-service-running-p () {
 464   dbus-send >/dev/null 2>&1 --session --print-reply \
 465     --dest=org.freedesktop.DBus / \
 466     org.freedesktop.DBus.GetNameOwner string:$1
 467 }
 468
 469 kill-gnome-session () {
 470   win=nil
 471   while read service object logout; do
 472     if dbus-service-running-p $service; then win=t; break; fi
 473   done <<EOF
 474 org.xfce.SessionManager /org/xfce/SessionManager org.xfce.Session.Manager.Shutdown uint32:1 boolean:false
 475 org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.Logout uint32:2
 476 EOF
 477   case $win in nil) return ;; esac
 478   info "killing session manager"
 479   dbus-send --session --dest=$service $object $logout
 480   for i in 1 2 3 4 5; do
 481     sleep 1
 482     if ! dbus-service-running-p $service; then break; fi
 483   done
 484 }
 485
 486 ###--------------------------------------------------------------------------
 487 ### Actually start things up.
 488
 489 if [ -f $HOME/.xinitrc-local ]; then
 490   . $HOME/.xinitrc-local
 491 fi
 492
 493 case "$start" in
 494   yes)
 495     info "starting standard clients"
 496     initialize
 497     start-window-manager
 498     start-clients
 499     start-emacs
 500     start-xterms
 501     ;;
 502   no)
 503     info "not starting standard clients"
 504     ;;
 505 esac
 506
 507 case "$wait" in
 508   yes)
 509     xwait
 510     kill-gnome-session
 511     ;;
 512   no)
 513     info "not waiting before exit"
 514     ;;
 515 esac
 516
 517 ###----- That's all, folks --------------------------------------------------