#! /bin/bash ### ### X startup script ###-------------------------------------------------------------------------- ### Utility functions. ## Progress indicators. info=yes info () { case $info in yes) echo "- $*" >&2 ;; esac } run=yes run () { local what=$1; shift local bg=no case $what in bg*) bg=yes what=${what#bg} ;; esac info "run $what: $*" case "$run,$bg" in yes,no) "$@" ;; yes,yes) "$@" & ;; esac } manage () { local when=$(date +%s) now local fail=0 rc report while :; do "$@"; rc=$? case $rc in 0) info "manage $1: successful exit"; break ;; 143) info "manage $1: terminated"; break ;; esac now=$(date +%s) report="rc = $rc" if (( $now - $when > 5 )); then fail=0 else report="$report, early failure" fail=$(( $fail + 1 )) if (( $fail >= 5 )); then info "manage $1: exit ($report), giving up after $fail failures" break fi fi info "manage $1: exit ($report), restarting" when=$now done } ## Program choice pick_program () { local what=$1; shift local choice=false for i in "$@"; do if type -t >/dev/null "$i"; then choice=$i; break; fi done info "pick $what = $choice" echo "$choice" } ###-------------------------------------------------------------------------- ### Parse arguments. vnc=no atomtag= start=yes wait=yes for opt; do case "$opt" in help) cat <&2; exit 1 ;; esac done ###-------------------------------------------------------------------------- ### Preliminary hook. if [ -r $HOME/.xinitrc-prehook ]; then . $HOME/.xinitrc-prehook fi ###-------------------------------------------------------------------------- ### Iniitial settings. ## Assume X sessions are secure. export __mdw_sechost="`hostname`" ## Obtain the screen dimensions. case ",$XWIDTH,$XHEIGHT," in *,,*) eval $(xscsize -bx; xscsize -bmx) ;; esac case ",$XNSCR," in ,,) XNSCR=1 XSCR0_X=0 XSCR0_Y=0 XSCR0_WIDTH=$XWIDTH XSCR0_HEIGHT=$XHEIGHT ;; esac i=0; while (( i < XNSCR )); do eval "x=\$XSCR${i}_X y=\$XSCR${i}_Y wd=\$XSCR${i}_WIDTH ht=\$XSCR${i}_HEIGHT" info "screen #$i = ${wd}x${ht}+${x}+${y}" i=$(( i + 1 )) done initialize () { ## Load the X resource database. run init xrdb -override $HOME/.Xdefaults ## Random xsettery. run init xset b 5 2000 50 run init xset r rate 500 50 run init xset m 2 1 ## Key mappings. xmodmap $HOME/.xmodmap if [ -r $HOME/.xmodmap-local ]; then xmodmap $HOME/.xmodmap-local fi } ###-------------------------------------------------------------------------- ### Start a window manager. wm=$(pick_program window-manager e16 compiz enlightenment e17 twm) wmopts="" case "$wm,$vnc" in enlightenment,yes | e16,yes) wmopts="$eopts -econfdir $HOME/.enlightenment-vnc" ;; esac start-e16 () { run bginit manage $wm $wmopts win=nil for i in $(seq 10); do sleep 1 if eesh version >/dev/null 2>&1; then win=t break fi done case $win in t) info "$wm started ok" run init xsetroot -cursor_name left_ptr ;; nil) info "$wm failed to start!" ;; esac } start-window-manager () { case $(type -t start-$wm || echo "not-found") in function) start-$wm $wmopts ;; *) run bginit manage $wm $wmopts ;; esac } ###-------------------------------------------------------------------------- ### Random useful clients. start-clients-local () { :; } start-clients () { ## Gnome session. case "$vnc,$(xfce4-session --version 2>&1),$(gnome-session --version 2>&1)" in no,xfce4-session*) run bginit xfce4-session ;; no,*,gnome-session\ 2.3[2-9].* | \ no,*,gnome-session\ 2.4[0-9].* | \ no,*,gnome-session\ 2.[1-9][0-9][0-9]*) run bginit gnome-session --session mdw ;; no,*,gnome-session*) run bginit gnome-session ;; esac ## Local clients. start-clients-local } ###-------------------------------------------------------------------------- ### Main screen layout. ## Choose appropriate clients. emacs=$(pick_program emacs \ emacs23-lucid emacs24-lucid emacs23 emacs24 emacs22 emacs21 emacs) term=$(pick_program terminal pterm Eterm xterm) ## Emacs window measurements. ## ## e_colsz = width of a column in characters (from `emacs-width' metaconfig) ## e_charwd = width of a character in pixels (assume `6x13') ## e_colextra = additional per-column overhead in pixels ## e_colextrachars = additional per-column overhead in character units ## e_colwd = basic width of a column in pixels ## e_hextra = extra horizontal width in pixels ## Width of an N-column Emacs frame in pixels will be ## N*e_colwd + e_hextra ## e_colchars = width of a column in Emacs `-geometry' units ## e_cextra = extra horizontal width in Emacs `-geometry' units ## So an N-column frame should be reported to Emacs as being ## N*e_colchars + e_cextra geometry units wide ## e_lineht = height of a character line in pixels ## e_vextra = number of additional vertical cruft pixels ## So an N-line Emacs frame takes N*e_lineht + e_vextra pixels e_colsz=$(mdw-conf emacs-width 77) e_charwd=6 e_colextra=30 e_colextrachars=5 e_lineht=13 case "$emacs" in emacs21 | emacs) e_hextra=34 e_cextra=-2 e_vextra=52 ;; emacs22 | emacs23) e_hextra=8 e_cextra=-6 e_vextra=46 ;; emacs24) e_hextra=5 e_cextra=-6 e_vextra=42 ;; emacs23-lucid) e_hextra=7 e_cextra=-6 e_vextra=48 ;; emacs24-lucid) e_hextra=7 e_cextra=-5 e_vextra=48 ;; esac e_colwd=$(( e_colsz*e_charwd + e_colextra )) e_colchars=$(( e_colsz + e_colextrachars )) ## Terminal window measurements. ## ## t_wd = the window width, in pixels ## t_lineht, t_vextra = height parameters: if the window is N lines high, ## then it will be N*t_lineht + t_vextra pixels high case "$term" in pterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-geometry;; Eterm) t_wd=504 t_lineht=13 t_vextra=23 geom=-g;; xterm) t_wd=507 t_lineht=13 t_vextra=27 geom=-geometry;; esac ## GNOME stuff measurements. declare -i panelwd=64 xbound=$(( XWIDTH - panelwd )) ## Choose a width for Emacs. ## ## We're going to make a single frame of Emacs, which will be automatically ## divvied into columns; the rest of the space will be tiled with xterms. If ## we have multiple screens, then Emacs can have the first screen and we'll ## fill the rest with terminals. Otherwise, we'll try to have N columns of ## Emacs, and N - 1 columns of xterms; if that doesn't work, we'll make do ## with N - 2 columns of xterms. ## ## So, let W be the available width; let E and T be the widths of an Emacs ## column (e_colwd) and terminal (t_wd), respectively, and let E0 be the ## additive width of Emacs's existence (e_hextra). If we have more than one ## screen, then instead, let T be zero. To start out, then, we let N = 1 + ## floor((W - E - E0)/(E + T)). If W - E0 - (N + 1) E - (N - 1)*T >= 0, then ## we increase N by one. declare -i lim=XSCR0_WIDTH if (( lim > xbound )); then lim=xbound; fi declare -i twd=t_wd; if (( XNSCR > 1 )); then twd=0; fi declare -i ecols=$(( (lim - e_colwd - e_hextra)/(e_colwd + twd) + 1 )) if (( lim - e_hextra - (ecols + 1)*e_colwd - (ecols - 1)*twd >= 0 )); then ecols=$(( ecols + 1 )) fi declare -i \ emacsx=$(( ecols*e_colchars + e_cextra )) \ emacsy=$(( (XHEIGHT - e_vextra)/e_lineht )) start-emacs () { GDK_NATIVE_WINDOWS=1 run bgclients noip \ $emacs -bg black -geometry ${emacsx}x${emacsy}+${XSCR0_X}+${XSCR0_Y} } ## Now place some xterms. ## ## A few smaller xterms are in general better than one great big one. 35 ## lines is a good height for most terminals. 25 lines is a minimum. The ## strategy for doling out xterms into a column is to make as many 35-liners ## as we can, until the remaining space would be too small for a 25-liner. ## If we can get two 25s out of that then we do (largest first); otherwise ## just make one big one. We stop at the end of a page, once we've made ## three xterms. start-xterms () { ## Initialize some parameters. declare -i x=$(( ecols*e_colwd + e_hextra + XSCR0_X )) xb=xbound declare -i n=0 pgx=0 l h y ht scr=0 ll=lim declare -i hstd=$(( 35*t_lineht + t_vextra )) declare -i hmin=$(( 25*t_lineht + t_vextra )) declare -i scrx scry scrwd scrht eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT" ## Do the placement. while :; do ## Start a new iteration. if (( x + t_wd > ll )); then scr=$(( scr + 1 )) if (( scr >= XNSCR )); then if (( n >= 3 )); then break; fi pgx=$(( pgx + XWIDTH )) xb=$(( xb + XWIDTH )) scr=0 fi eval "scrx=\$XSCR${scr}_X scry=\$XSCR${scr}_Y scrwd=\$XSCR${scr}_WIDTH scrht=\$XSCR${scr}_HEIGHT" x=$(( pgx + scrx )) ll=$(( x + scrwd )) if (( ll > xb )); then ll=xb; fi fi ## Make large xterms. y=scry ht=scrht while (( ht - hstd >= hmin )); do run bgclients $term $geom 80x35+$x+$y y=$(( y + hstd )) ht=$(( ht - hstd )) n=$(( n + 1 )) done ## Fill the remaining space. if (( ht >= 2*hmin )); then h=$(( ht - hmin )); else h=ht; fi l=$(( (h - t_vextra)/t_lineht )) h=$(( l*t_lineht + t_vextra )) run bgclients $term $geom 80x$l+$x+$y y=$(( y + h )) ht=$(( ht - h )) n=$(( n + 1 )) if ((ht >= hmin)); then run bgclients $term $geom 80x25+$x+$y n=$(( n + 1 )) fi x=$(( x + t_wd )) done } ###-------------------------------------------------------------------------- ### Requesters. req () { declare title=$1 hist=$2; shift 2 cmd=$(xgetline -t "$title" -p "_Command:" -Hl "$HOME/$hist") && exec "$@" "$cmd" } ###-------------------------------------------------------------------------- ### Final waiting. atom=XINIT_COMMAND$atomtag xwait () { while :; do xatom delete $atom info "waiting on $atom" line=$(xatom wait $atom) info "xatom: $line" case "$line" in :help) xmsg -I -t "xinitrc help" -d "xinitrc commands" - </dev/null 2>&1 } dbus-service-running-p () { dbus-send >/dev/null 2>&1 --session --print-reply \ --dest=org.freedesktop.DBus / \ org.freedesktop.DBus.GetNameOwner string:$1 } kill-gnome-session () { win=nil while read service object logout; do if dbus-service-running-p $service; then win=t; break; fi done <