Re: Run a GTK application without desktop environment

[Göran Hasse <gorhas raditex nu>]

This is quite simple.

You have to send in the geometry to the GTK application so that is self
can decide its geometry. 

You don't need any window manager.

I run a lot of FreeBSD computers this way.

In rc.local you run something like

-------------------------------
#!/usr/local/bin/bash

/usr/sbin/ntpdate -s 0.ubuntu.pool.ntp.org

DISPLAY=:0.0
export DISPLAY

/usr/local/bin/X -ac &

# Let the x-server have time to start
sleep 20

# Connect from any IP
/usr/local/bin/xhost + &

# Remove the cursor from the screen, turn off screensaver
/usr/local/bin/unclutter -root -idle 1 &
/usr/local/bin/xset -dpms &
/usr/local/bin/xset s off &

# set background
# https://en.wikipedia.org/wiki/X11_color_names
/usr/local/bin/xsetroot -solid Grey &

# show local time
TZ=CEST
export TZ

# Startscript for infotable at LEV
DISPLAY=192.168.37.88:0.0 ./draw-text -x 0 -y 0 -X 896 -Y 307 -g logo -L "" -f 100 &
...

----------------------------------------------------

Note that the gtk-widget have to "resize" itself. So you must program it to
read its own "geometry". x , y , X  Y (and some other stuff).

/gh

Den 2016-03-18 kl. 01:30, skrev Anatol Pomozov:
> Hi
>
> I am trying to implement a simple Kiosk-like web application. The
> application will run fullscreen all the time and show web pages. I my
> case it will be project's build status. I want to use a simple
> computer like a RaspberryPi. And I want to avoid starting heavy
> environments like KDE or Gnome.
>
> Is there any good example/tutorial on this topic?
>
> In fact I already have a simple GTK application that uses WebKit
> engine. I can run it both in Gnome and without it by using xinit. I
> have a few questions about it:
>
> - gtk_window_fullscreen() works fine with Gnome but with xinit it does
> not expand the window. Does it mean that fullscreen is actually a DE
> feature? What is the best way to make fullscreen app in XWindow? Right
> now I use gdk_screen_get_width/height and then set default size.
>
> - If I run webkit in XWindows it shows pages with horrible fonts. How
> to make the browser fonts similar to what I see in my Gnome desktop?
> Where to start reading about font handling in the modern Linux
> graphical stack?
>
> - It looks like Kodi player at RaspberryPi does not not use xinit at
> all. It looks like RaspberryPi has a direct framebuffer feature. Is it
> possible to do it with my webkit-centric application? I can't find any
> details on this topic.
>
> Did anybody make something similar? I would love to hear the
> experience in making DE-less applications.
> _______________________________________________
> gtk-list mailing list
> gtk-list gnome org
> https://mail.gnome.org/mailman/listinfo/gtk-list

-- 
Göran Hasse
Raditex Control AB
http://www.rscada.se
OrgNr: 556611-8773
email: gorhas raditex nu
tel: 019-450105
mob: 070-5530148