I have been searching in google since one day and I have not found any information of how to resize the webbrowser window (for example, half of the screen) just starting the raspberry pi.
At the moment I achieved starting the webbrowser in kiosk with this code:
In /etc/xdg/lxsession/LXDE-pi/autostart
#xset s off
#xset -dpms
#xset s noblank
#epiphany-browser http://www.google.de
Any idea of how can give/configure a given size to the browser?
I solved by my own.
Just creating a script and using wmctrl in the script.
When starting the PC it run automatically this script.
#!/bin/bash
epiphany http://www.google.de &
sleep 15s
epiphany --new-window www.wikipedia.com &
sleep 15s
SOURCE=/usr/bin
echo "$SOURCE"
$SOURCE/wmctrl -r wikipedia -e 0,0,0,800,1080
$SOURCE/wmctrl -r Google -e 0,800,0,1120,1080
Related
I'm currently playing with my brand-new raspberry with adafruit's touch-tft and raspberry Cam.
I noticed, if I run raspivid -p, it displays the preview in a frame on top of the bash.
How can I create an application (java, python, c++(preferred)) to display a GUI without having to startx?
I'd love to use adafruit's touch-tft for a project, but startx needs a lot of resources. Of course it would be cool to have the touch-functionality too.
Edit:
Maybe I expressed myself a little bit confusing: I would like to create an application that doesn't need startx but has some kind of GUI.
The answers below aren't 100% ready to go but they pointed me to the right direction. Since I saw many similar questions I will try to give a step-by-step solution:
Setup your raspberry with adafruit's TFT: https://learn.adafruit.com/adafruit-pitft-28-inch-resistive-touchscreen-display-raspberry-pi/overview
(you don't have to replace the TFT with HDMI as standart display)
be sure FRAMEBUFFER=/dev/fb1 startx is running correctly on the TFT screen, I have my TV plugged in the HDMI port, this way I can use the bash on the TV screen and run x on the TFT
Follow this tutorial to create your first pygame: http://www.pygame-doku.laymaxx.de/tut/intro/intro.html
(you can just copy&paste, wget ball.gif)
Insert this 2 lines at the beggining: (github.com/notro/fbtft/wiki/Pygame)
import os
os.environ["SDL_FBDEV"] = "/dev/fb1"
If you want to test the touch-screen to, you can change Line 15:
From:
if event.type == pygame.QUIT: sys.exit()
To:
if event.type == pygame.MOUSEBUTTONDOWN: sys.exit()
This will exit the application if you touch the screen
Save file e.g. pygame1.py and execute with $python pygame1.py
You should now see a bouncing ball on your TFT while the HDMI output still displays the BASH on your TV (but it isn't active of course) touching the screen will exit the game if you completed step 6
Why I'm doing this? This way you can display a simple GUI with e.g. buttons to do some action, like turn your lights on/off if you use your RPI for home-control.
You can use for example pygame library! check this tutorial http://archive.furtherfield.org/rp-resources/RP-workshop-handout.pdf pg. 17
Below, you will find a detailed description of how to be a minimal window manager to start a graphics program of your choice.
-Install Required Packages:
apt-get update
apt-get install xorg - no-install-recommends gdm3 matchbox-window-manager Iceweasel rsync-y
-The system in question, select Add a new user interface gdm3. The terminal is the default name will be used.
adduser kiosk
-Create-Xsession. This script will be executed when the user logs on.
xset s off
xset -dpms
matchbox-window-manager &
while true; do
rsync -qr --delete --exclude='.Xauthority’ /opt/kiosk/ $HOME/
firefox http://www.google.com (Replace your application!!!)
done
Save Ctrl + O; Exit: Ctrl + X
chmod a + x. xsession
cp / opt / kiosk / .xsession / home / kiosk
Set Auto-Login. Kiosk user will enter automatically after boot.
nano / etc/gdm3/daemon.conf
[Daemon]
AutomaticLoginEnable = true
AutomaticLogin = kiosk
We have chosen to configure, program, if necessary
-Screen calibration when not loaded up the whole screen:
/ Boot / config.txt file, clear the comment:
disable_overscan = 1
I hope I helped
Check out Urwid, a text-based ui that can run in a terminal, or, I assume, on a Raspberry Pi started up without startx.
In short you can't, applications like gedit are built atop of a desktop environment (e.g. Gnome, Kde).
I have a source code that runs perfectly fine on Ubuntu, it does some copumtations, and at some points it beeps like this
system("beep -f 400 -l 500");
On Ubuntu I had to do
apt-get install beep
However, I migrated to OpenSuse (not my choice) and now I get this message "sh: beep: command not found", as the command and package are obviously different.
Does anybody know hot to trigger the system beep sound and define the duration and frequency? I have been able to find only one way to change the parameters
setterm -bfreq 500 -blength 500
, but no way to actually trigger the system bell (beep). The following things don't work
echo ^G
echo -e "\a"
PS - the system Bell is enabled at
Configure Desktop -> Application and System Notifications -> System Bell
and you can actually play with this
So, I did what #fvu proposed.
However, one needs to have sudo rights, to do so, otherwise (e.g. at my work-place we don't have sudo rights) there is this output message
Could not open /dev/tty0 or /dev/vc/0 for writing open: No such file or directory
In this case, you should:
sudo chmod 4755 /usr/bin/beep
as proposed here
I noticed that on my OpenSuse 12.3 system, the bell is working in xterm or gnome-terminal, but not in konsole or xfce4-terminal.
If the same applies to your system, then maybe a work-around could be creating a shell script called "beep" which calls xterm and rings the bell:
#!/bin/sh
xterm -e "echo -e '\a'; sleep 1"
I used QEMU to bring CentOS.img (downloaded some where). I find the boot screen of CentOS.img took over the console session of the current terminal and I could see CentOS booting up process and prompts me to the login screen of the guestVM CentOS. This is really helpful for me as I ran QEMU instance from remote console machine.
Now, I created a new RHEL.img using iso and when I try to boot it; I was not able to see anything in the screen other then some symbol of (Y) :(
$>/usr/libexec/qemu-kvm -hda ./RHEL.img -bios bios.bin -nographic -net nic,model=e1000,macaddr=00:AD:BE:EF:4F:BD -net tap,script=./qemu-ifup -m 1024 -smp 2
...Y
on investigation, I find we can do it by redirecting RHEL boot to console using
# virt-edit RHEL_VM /boot/grub/grub.conf
...
title rhel (2.6.38.6-26.rc1.fc15.x86_64)
root (hd0,0)
kernel /vmlinuz ro [...] console=ttyS0
...
but nothing worked out. I am trying to bring the rhel VM session to the same console where I invoked qemu-kvm from remote terminal. Thanks in advance.
NOTE: I don't have GUI enabled on the physical host machine.
You could try adding a serial port and sending output to that. Although you do have to be able to boot it at least once to do these steps...
You might get lucky if you just add a serial port to the qemu command line and then telnet to that; hoping linux detects this and sends output there
edit /etc/init/ttyS0.conf and add
respawn
console none
start on (local-filesystems)
stop on [!12345]
script
exec start ttyS0
end script
then
ln -s /etc/init/ttyS0.conf /etc/rc2.d/S99ttyS0.conf
ln -s /etc/init/ttyS0.conf /etc/rc0.d/S99ttyS0.conf
ln -s /etc/init/ttyS0.conf /etc/rc6.d/S99ttyS0.conf
then do this to enable grub
Edit /etc/default/grub
1. Edit the GRUB_CMDLINE_DEFAULT="" line to start the console on /dev/ttyS0
GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,38400n8"
2. Add a serial console section
# Serial console
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=38400 --unit=0 --word=8 --parity=no --stop=1"
3. Rebuild the grub.cfg file
sudo sh
grub-mkconfig > /boot/grub/grub.cfg
I followed Alan D. Moore's step-by-step guide to have my Raspberry Pi running in kiosk mode.
I did my own configuration as I needed it to run on a touchscreen with no physical keyboard and mouse.
Here's how my ~/.xinitrc file looks.
xset s off
xset -dpms
matchbox-window-manager &
matchbox-keyboard &
while true; do
rsync -qr --delete --exclude='.Xauthority' /opt/kiosk/ $HOME/
midori -i 600 -e Fullscreen -e Navigationbar -a http://myport.ac.uk
done
I used apt-get install for the matchbox-keyboard to be used as an on-screen virtual keyboard solution.
Just look at how small the keys are! Barely touchable and super inaccurate...
The real question is if anyone knows of a way to make the keyboard bigger, could recommend other solutions or tweak the config? I am a total debian newbie so I really hope I get some help here. :)
Look here: http://mottie.github.io/Keyboard/
You can make an OSK with javascript.
Try to replace the line:
matchbox-keyboard &
with:
matchbox-keyboard -s 20 &
where -s is the font size (letter) that appears on each key.
I'd like to start Firefox for example with no display associated and eventually take a screenshot with import.
Can I in fact make it periodically with cronjobs?
I'm now making a ssh -X connection, take the xwininfo for the window started in background and everything's OK. But I'd like to automate it.
You could start Firefox inside Xvfb.
If you gave Xvfb its -fbdir option then you would also have the option to take your screenshot from the Xvfb framebuffer file. You would probably want to specify the same geometry for Xvfb and Firefox.
How about starting firefox inside a vncserver?
You can capture the value for $DISPLAY using grep
e.g.
export DISPLAY=`vncserver 2>&1 | egrep --only-matching ":[0-9]+" | head -n1`