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Month: April 2019

Re: [trinity-users] Re: [users] Re: [users] Re: [users] Re: [users] Making TDE aware of non-Trinity applications

From: "Dr. Nikolaus Klepp" <office@...>
Date: Fri, 26 Apr 2019 08:06:34 +0200
Anno domini 2019 Thu, 25 Apr 20:46:55 -0500
 J Leslie Turriff scripsit:
> On 2019-04-19 15:28:14 J Leslie Turriff wrote:
> > On 2019-03-21 09:48:36 Dr. Nikolaus Klepp wrote:
> > > Anno domini 2019 Wed, 20 Mar 23:46:39 -0500
> > >
> > > �J Leslie Turriff scripsit:
> > > > On 2019-03-15 02:52:33 Dr. Nikolaus Klepp wrote:
> > > > > Anno domini 2019 Thu, 14 Mar 22:40:38 -0500
> > > > >
> > > > > �J Leslie Turriff scripsit:
> > > > > > On 2019-03-14 20:15:13 Michael wrote:
> > > > > > > On Thursday 14 March 2019 06:26:16 pm J Leslie Turriff wrote:
> > > > > > > > On 2019-03-11 04:12:29 Dr. Nikolaus Klepp wrote:
> > > > > > > > > Anno domini 2019 Sun, 10 Mar 11:16:03 -0500
> > > > > > >
> > > > > > > .> > �J Leslie Turriff scripsit:
> > > > > > > > > > On 2019-03-10 10:35:32 BorgLabs - Kate Draven wrote:
> > > > > > > > > > > On Sunday 10 March 2019, J Leslie Turriff wrote:
> > > > > > > > > > > > ������Is there a way to make TDE aware of running
> > > > > > > > > > > > non-Trinity applications so that they can be
> > > > > > > > > > > > resurrected after Logout/Login? I have at least one
> > > > > > > > > > > > X11-based application (X2 - The Programmer's Editor)
> > > > > > > > > > > > that I use extensively, and it would be nice if it
> > > > > > > > > > > > could remember across Logout/Login events. I'm
> > > > > > > > > > > > wondering if something like a DCOP wrapper might do the
> > > > > > > > > > > > job?
> > > > > > > > > > >
> > > > > > > > > > > Load the application into your autostart dir.
> > > > > > > > > > > /home/foo/.trinity/autostart
> > > > > > > > > > > Also, check the program's setting to see if it has an
> > > > > > > > > > > autostart feature.
> > > > > > > > > >
> > > > > > > > > > ��Yes, that would work if I wanted it to start at every
> > > > > > > > > > login, not just if it was running when I logged out...
> > > > > > > > >
> > > > > > > > > Once upon a time there was a little kingdom where all
> > > > > > > > > applications held the X11 standards high and the grand master
> > > > > > > > > of session management called
> > > > > > > >
> > > > > > > > ������So I guess you're saying that there's no way to get TDE
> > > > > > > > to notice my X2, then.
> > > > > > >
> > > > > > > You can use the autostart dir [1], but you'll need to do the work
> > > > > > > yourself. You could add a wrapper to starting X2 and a script in
> > > > > > > the autostart dir. Or better would be a check script in the
> > > > > > > shutdown dir (if it exists) and a corresponding script in the
> > > > > > > autostart dir.
> > > > > > >
> > > > > > > Here's some out of context code from something else,
> > > > > > > hack-and-slash as needed.
> > > > > > >
> > > > > > > #!/bin/bash
> > > > > > > /path-to-X2/X2
> > > > > > > Pid=`pgrep -f /path-to-X2/X2`
> > > > > > > if [ "$Pid" != "" ] ; then
> > > > > > > # �echo Already running...
> > > > > > > # �ps "$Pid"
> > > > > > > � touch /home/foo/.trinity/apps-to-restart/X2
> > > > > > > � exit
> > > > > > > fi
> > > > > > >
> > > > > > > In any event, what you want can be done, it just might be
> > > > > > > painful.
> > > > > > >
> > > > > > > Best,
> > > > > > > Michael
> > > > > > >
> > > > > > > [1] Mine seems to be called: �/home/michael/.trinity/Autostart
> > > > > >
> > > > > > ��������You're apparently misunderstanding what I'm looking for. �I
> > > > > > don't want this program to Always start when I login, only when it
> > > > > > was running at the time that I previously logged out. �That's why I
> > > > > > wondered if some sort of DCOP wrapper might be appropriate.
> > > > > >
> > > > > > Leslie
> > > > >
> > > > > As your editor is not xsession-aware you have to wrap it some shell
> > > > > script, that just saves the state of x2 in the form of commandline
> > > > > invocation in a file when it's close due to TDE shutdown. So there is
> > > > > no invocation of X2 when no X2 was open when TDE closed the session.
> > > > > At TDE login you execute that file with invocations and be happy.
> > > > > Sure, you have to manage some stuff like which desktop to put it,
> > > > > window placement etc. but that's not that complicated.
> > > > >
> > > > > Nik
> > > >
> > > > ����Yes, but what to put in that wrapper? �That's what my original
> > > > question was.
> > >
> > > Ah, ok. I do not know X2, is it this one?
> > > http://www.tangbu.com/x2main.shtml If yes, then there is one notable
> > > things about the application (but correct me if I'm wrong): The X11
> > > application "xx" does not set the X11 window title to the filename of the
> > > file that's edited - which makes it an extremly hostile application and
> > > difficult to find the filename in a general solution. The terminal
> > > application "x" does neither, but you can get the filename from the
> > > current instance if you parse the escape-sequence (<ESC>[H, then some
> > > chatter and there comes the filename).
> > >
> > > Anyway, the geometry of each window and the desktop where it runs on can
> > > be found like this:
> > >
> > > for ID in $(xwininfo -all -root|awk '/"X2 Editor Version 2.08.1"/ {print
> > > $1}'); do echo $(xprop -id $ID|awk '/_NET_WM_DESKTOP/{print $3}') \
> > > � � � �$(xwininfo -id $ID|awk '/geometry/ {print $2}'| tr -c '[0-9]' ' ')
> > > \ $(/do/some/black/magic/to/get/filename/from/X2)
> > > done > /some/place/to/store
> > >
> > > Example /some/place/to/store:
> > > 2 484 559 58 0 /tmp/a.txt
> > > 4 100 100 100 100 /tmp/b.txt
> > >
> > > To restore each window you basicly do something like this - nota bene: if
> > > x2 were a nice application, you would not have to do this trickery to get
> > > it's window id:
> > >
> > > cat /some/place/to/store | while read DESKTOP W H X Y FILE; do
> > > � A=$(xwininfo -all -root|awk '/X2 Editor Version 2.08.1/ {print $1}')
> > > � /path/to/xx $FILE &
> > > � sleep 1
> > > � B=$(xwininfo -all -root|awk '/X2 Editor Version 2.08.1/ {print $1}')
> > > � ID=$(echo $A $B|tr ' ' '\n'|sort|uniq -u)
> > > � xdotool set_desktop_for_window $ID $DESKTOP
> > > � xdotool windowsize $ID $W $H
> > > � xdotool windowmove $ID $X $Y
> > > done
> > >
> > > I hope that get's you started. As I do not know how you use X2 (xx or x
> > > ...), I cannot give you a hint how to obtain the filename of a window
> > > instance.
> > >
> > > Nik
> > >
> > > > Leslie
> >
> > ��������Okay, I seem to have a working script (attached) that remembers the
> > X applications I'm concerned with (thank you, Nik); now, how do I tell
> > Trinity to execute it at shutdown time before it kills said applications?
> >
> > Leslie
> > rememberXapps
> 
> 	I just noticed that, while most editors display the path to the file 
> currently in view in the title bar, that information is not necessarily 
> complete because more than one file argument might have been passed on the 
> command line; also, any program switches are not displayed there.
> 	If the program passes its PID to X, the xprop command can retrieve that, and 
> ps ef can be used to retrieve the original argument list.  Unfortunately, X2 
> neither displays the current file's path nor passes its PID to X. :-(
> 
> Leslie

Yes, that's why you need a wrapper around X2 that saves the commandline somewhere. Like so:

# x2wrapper
/path-to-X2/X2 $* &
echo $! $* > /tmp/$!.commandline

Additionally - if you open a file from within the editor - you could run X2 with strace and capture all calls to "open".

Nik

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