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Author Topic: xvesa - how can i read the current resolution to use it as a variable?  (Read 6363 times)

Offline netnomad

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hi friends, hi roberts,

i want to make my desktop flexible for different resolutions in xvesa.
for that goal i want to read or get the current resolution.
in my examples i looked just for the y-value,
because i want to place my desktop pager in the left bottom corner.
would you tell me a  way to place something in the left bottom corner?
f.e. like the concept of positioning wbar or a panel!?
another goal is to position mnttool on the right up corner...:)


first i tried to use

Code: [Select]
awk ' BEGIN{FS=",";} { $1= "";} {sub(/^[ \t]+/, ""); print}' /sys/devices/platform/vesafb.0/graphics/fb0/virtual_size

although it stores a suitable value,
i guess that this virtual_size has not too much to do with my current resolution...


later i tried

Code: [Select]
Xvesa -listmodes 2>&1 | grep ^0x | awk '{ printf "%s\n",$2 }' | sort -n > /tmp/xvesamodes
awk ' BEGIN{FS="x";} { $1= "";} { $3= "";} {sub(/[ \t]+$/, "")} {sub(/^[ \t]+/, ""); print}' /tmp/xvesamodes | sed '$!d'

but  Xvesa -listmodes offers so many resolutions that someones display cannot support,
so the highest resolution is not always the suitable one.


i guess that this one-liners are looking ugly for experienced coders, so please, don't mind...:)

so do you know a way, every hint is welcomed!
thank you
« Last Edit: November 14, 2011, 12:55:32 PM by netnomad »

Offline curaga

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Re: xvesa - how can i read the current resolution to use it as a variable?
« Reply #1 on: November 14, 2011, 02:01:33 PM »
Please read the watcher info file,
http://ftp.nluug.nl/pub/metalab/distributions/tinycorelinux/4.x/x86/tcz/watcher.tcz.info

It has a quick howto on using the X standard -g (-geometry) option that most apps accept. With it you can position apps easily with no knowledge of the screen size.


--

For getting the screen resolution, if you can't read .xsession, xdpyinfo and xwininfo can tell you.
The only barriers that can stop you are the ones you create yourself.

Offline netnomad

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Re: xvesa - how can i read the current resolution to use it as a variable?
« Reply #2 on: November 14, 2011, 04:25:26 PM »
hi curaga,

thank you for your reply.
ipager doesn't have such an -g option, but it's good that you've mentioned it, i guess that i will need it later.

i had success with xwininfo, it works without dependencies, so i don't need to install the heavy xorg-package...

Code: [Select]
#!/bin/sh
MYY="$(xwininfo -root | awk '/Height:/,/Height:/' | sed 's/Height: / /g' | sed 's/ //g')"
sleep 1
ipager -c ~/.ipager/ipager$MYY.conf 2>/dev/null &

thank you for your hints!
« Last Edit: November 14, 2011, 04:28:19 PM by netnomad »

Offline curaga

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Re: xvesa - how can i read the current resolution to use it as a variable?
« Reply #3 on: November 15, 2011, 08:22:08 AM »
Many apps support the -g option via their toolkit (and so not listed in their --help etc).

Just curious, do you launch xvesa some different way, that the resolution is not in .xsession?
The only barriers that can stop you are the ones you create yourself.

Offline netnomad

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Re: xvesa - how can i read the current resolution to use it as a variable?
« Reply #4 on: November 15, 2011, 09:07:12 AM »
yes, you are right!

1. in my .xsession i control the 1280x1024x24-resolution of my mainly used systems.

2. when i use my netbook then i use over syslinux the command-line "xvesa=1024x600x32" and my .xsession-entry stays untouched.

Though i really love and heavily use my ipager in the left bottom corner, i read the resolution of xwininfo and choose the compatible ipager-config-file f.e. ipager1024.conf.

by the way, ipager doesn't know a -g option:
tc@box:~$ ipager -g +88+88
ipager: invalid option -- 'g'
« Last Edit: November 15, 2011, 09:15:31 AM by netnomad »

Offline curaga

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Re: xvesa - how can i read the current resolution to use it as a variable?
« Reply #5 on: November 15, 2011, 09:33:23 AM »
The bootcode does change .xsession, but if you don't do a backup, it's not persistent.
The only barriers that can stop you are the ones you create yourself.