From: Lucio Chiappetti (lucio@mi.iasf.cnr.it)
Date: Fri Apr 04 2003 - 10:59:09 EST
On Fri, 4 Apr 2003, Lucio Chiappetti wrote:
> ... I'd like to have a better way to tell me which workspace I am in,
> with a name either as
>
> - a little icon with the workspace name
> - a script which could set an environment variable [...]
I have discovered the man pages and the online documentation for dtksh,
and learned quite a bit about X (but not enough ?!)
I have therefore solved the second problem above. The first script
enclosed essentially flashes a little useless widget, but in the process
of doing so returns the workspace number to the terminal. I could
therefore use an assignment like set myswp=`myworkspacefast` (the name of
the script) and use it in my standard script to set window banners in
addition to host, username and tty.
But you know the saying "appetite comes while eating".
During my exercises I discovered I could keep the workspace number
permanently up (e.g. in the widget title bar). I could even have the
widget occupy all workspaces, and define a callback which automatically
updates the title whenever I change workspace.
This is exemplified by the second script, which is a sort of solution to
my first problem.
It has a little imperfection. When I call it (myworkspace.standalone),
I cannot force the window to appear where I want. It always appears in the
top left corner. Looks a window manager issue, but other applications
behave differently.
Also more appetite comes. I now want the above widget to come out at
login. I did several tries, like updating the .dt/session/home/dt.session
by hand, or calling up the CDE control panel, with no result. In
particular using the control panel "set home session" did not alter the
above file !
After which a more careful reading of man dtksh and of the example script
contained therein (which I stripped a lot) taught me that applications
to be saved in the home session require to be aware of that (or the
session manager has to be aware of the application)
So I copied back in (third script) the code in man dtksh. This way a "set
home session" writes the correct commands. It also saves a "session file"
which in my case is useless/redundant (it contains "Deiconified" and the
list of the 4 ws0 ws1 ws2 ws3).
BUT STILL WHEN I LOGIN THE WIDGET IS RESTARTED not only in the top
left corner but also ONLY IN WORKSPACE 1. This irrespective of the fact
that both the session file and my code tell it to occupy all workspaces
(one at a turn or all in a go).
I tried also some variations simplifying the code, ignoring the session
file, or forcing occupation of one workspace at a time, but in all cases
when started from login it occupies only workspace 1 (if I manually occupy
all wsp's it works, and if I call it manually it occupies all wsp's)
What's wrong ?
----------------------------------------------------------------------------
Lucio Chiappetti - IASF/CNR - via Bassini 15 - I-20133 Milano (Italy)
----------------------------------------------------------------------------
L'Italia ripudia la guerra [...] come Italy repudiates war {...] as a
mezzo di risoluzione delle controversie way of resolution of international
internazionali controversies
[Art. 11 Constitution of the Italian Republic]
----------------------------------------------------------------------------
For more info : http://www.mi.iasf.cnr.it/~lucio/personal.html
----------------------------------------------------------------------------
-------------------------------------------------------------------
Script 1 : This script returns the workspace number (1-4) to terminal
-------------------------------------------------------------------
#! /usr/dt/bin/dtksh
XtInitialize TOPLEVEL wmProtTest Dtksh "$@"
XtCreateManagedWidget DA da XmDrawingArea $TOPLEVEL
XtSetValues $DA height:1 width:160
XtSetValues $TOPLEVEL title:"prova"
XtRealizeWidget $TOPLEVEL
XtScreen MYSCREEN $DA
XRootWindowOfScreen RW $MYSCREEN
DtWsmGetCurrentWorkspace $(XtDisplay "-" $TOPLEVEL) $RW CURRENT_WS_LIST
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $CURRENT_WS_LIST
NUMBER=${NAME##ws}
NUMBER=$(($NUMBER+1))
echo $NUMBER
XtSetValues $TOPLEVEL title:"workspace $NUMBER"
XSync $(XtDisplay "-" $TOPLEVEL) False
exit
-------------------------------------------------------------------
Script 2 : This script returns the workspace number (1-4) in a widget
-------------------------------------------------------------------
#! /usr/dt/bin/dtksh
MyCallBack()
{
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $CB_CALL_DATA
NUMBER=${NAME##ws}
NUMBER=$(($NUMBER+1))
XtSetValues $TOPLEVEL title:"workspace $NUMBER"
XSync $(XtDisplay "-" $TOPLEVEL) False
}
XtInitialize TOPLEVEL wmProtTest Dtksh "$@"
XtCreateManagedWidget DA da XmDrawingArea $TOPLEVEL
XtSetValues $DA height:1 width:160
XtSetValues $DA x:+1065 y:+332
XtSetValues $TOPLEVEL title:"prova"
XmInternAtom SAVE_SESSION_ATOM $(XtDisplay "-" $TOPLEVEL) "WM_SAVE_YOURSELF" True
XtRealizeWidget $TOPLEVEL
XmAddWMProtocols $TOPLEVEL $SAVE_SESSION_ATOM
XtScreen MYSCREEN $DA
XRootWindowOfScreen RW $MYSCREEN
DtWsmGetCurrentWorkspace $(XtDisplay "-" $TOPLEVEL) $RW CURRENT_WS_LIST
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $CURRENT_WS_LIST
NUMBER=${NAME##ws}
NUMBER=$(($NUMBER+1))
XtSetValues $TOPLEVEL title:"workspace $NUMBER"
DtWsmOccupyAllWorkspaces $(XtDisplay "-" $TOPLEVEL) $(XtWindow "-" $TOPLEVEL)
XSync $(XtDisplay "-" $TOPLEVEL) False
DtWsmAddCurrentWorkspaceCallback NEW $DA MyCallBack
XtMainLoop
-------------------------------------------------------------------
Script 3 : as script 2 but should be session management aware
-------------------------------------------------------------------
#! /usr/dt/bin/dtksh
#
# this call back acts at change of workspace
MyCallBack()
{
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $CB_CALL_DATA
NUMBER=${NAME##ws}
NUMBER=$(($NUMBER+1))
XtSetValues $TOPLEVEL title:"workspace $NUMBER"
XSync $(XtDisplay "-" $TOPLEVEL) False
}
#
# this from the man page
# Function invoked when the session is being ended by the user
SessionCallback()
{
# Get the name of the file into which we should save our
# session information
if DtSessionSavePath $TOPLEVEL PATH SAVEFILE; then
exec 9>$PATH
# Save off whether we are currently in an iconified state
if DtShellIsIconified $TOPLEVEL ; then
print -u9 'Iconified'
else
print -u9 'Deiconified'
fi
# Save off the list of workspaces we currently reside in
if DtWsmGetWorkspacesOccupied $(XtDisplay "-" $TOPLEVEL) $(XtWindow "-" $TOPLEVEL) CURRENT_WS_LIST ;
then
# Map the comma-separated list of atoms into
# their string representation
oldIFS=$IFS
IFS=","
for item in $CURRENT_WS_LIST;
do
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $item
print -u9 $NAME
done
IFS=$oldIFS
fi
exec 9<&-
# Let the session manager know how to invoke us when
# the session is restored
DtSetStartupCommand $TOPLEVEL "/ouranos/cdeuser/myrealworkspace $SAVEFILE"
else
echo "DtSessionSavePath FAILED!!"
exit -3
fi
}
# Function invoked during a restore session; restores the
# application to its previous state
RestoreSession()
{
# Retrieve the path where our session file resides
if DtSessionRestorePath $TOPLEVEL PATH $1; then
exec 9<$PATH
read -u9 ICONIFY
# Extract and restore our iconified state
case $ICONIFY in
Iconified) DtSetIconifyHint $TOPLEVEL True;;
*) DtSetIconifyHint $TOPLEVEL False;
esac
# Extract the list of workspaces we belong in, convert
# them to atoms, and ask the workspace manager to relocate
# us to those workspaces
WS_LIST=""
while read -u9 NAME
do
XmInternAtom ATOM $(XtDisplay "-" $TOPLEVEL) $NAME False
if [ ${#WS_LIST} -gt 0 ]; then
WS_LIST=$WS_LIST,$ATOM
else
WS_LIST=$ATOM
fi
done
DtWsmSetWorkspacesOccupied $(XtDisplay "-" $TOPLEVEL) $(XtWindow "-" $TOPLEVEL) $WS_LIST
exec 9<&-
else
echo "DtSessionRestorePath FAILED!!"
exit -3
fi
}
#
#
# MAIN
#
XtInitialize TOPLEVEL wmProtTest Dtksh "$@"
XtCreateManagedWidget DA da XmDrawingArea $TOPLEVEL
# geometry, size is irrelevant, position is not honored ?
XtSetValues $DA height:1 width:160
XtSetValues $DA x:+1065 y:+332
# just a title, it will be owerwritten later
XtSetValues $TOPLEVEL title:"prova"
# standard stuff from man page
XmInternAtom SAVE_SESSION_ATOM $(XtDisplay "-" $TOPLEVEL) "WM_SAVE_YOURSELF" False
# If a command-line argument was supplied, then treat it as the
# name of the session file
if (( $# > 0))
then
# Restore to the state specified in the passed-in session file
XtSetValues $TOPLEVEL mappedWhenManaged:False
XtRealizeWidget $TOPLEVEL
XSync $(XtDisplay "-" $TOPLEVEL) False
RestoreSession $1
XtSetValues $TOPLEVEL mappedWhenManaged:True
XtPopup $TOPLEVEL GrabNone
else
# This is not a session restore, so come up in the default state
XtRealizeWidget $TOPLEVEL
XSync $(XtDisplay "-" $TOPLEVEL) False
fi
# Register the fact that we are interested in participating in
# session management
XmAddWMProtocols $TOPLEVEL $SAVE_SESSION_ATOM
XmAddWMProtocolCallback $TOPLEVEL $SAVE_SESSION_ATOM SessionCallback
# get the current workspace
XtScreen MYSCREEN $DA
XRootWindowOfScreen RW $MYSCREEN
DtWsmGetCurrentWorkspace $(XtDisplay "-" $TOPLEVEL) $RW CURRENT_WS_LIST
XmGetAtomName NAME $(XtDisplay "-" $TOPLEVEL) $CURRENT_WS_LIST
# change wsn in n+1 (ws0 is workspace 1 etc.)
NUMBER=${NAME##ws}
NUMBER=$(($NUMBER+1))
XtSetValues $TOPLEVEL title:"workspace $NUMBER"
# occupy all wsp, display and install the call back
DtWsmOccupyAllWorkspaces $(XtDisplay "-" $TOPLEVEL) $(XtWindow "-" $TOPLEVEL)
XSync $(XtDisplay "-" $TOPLEVEL) False
DtWsmAddCurrentWorkspaceCallback NEW $DA MyCallBack
XtMainLoop
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