I write a program in python3.6 under PyCharm in Ubuntu 18.04 I want to pop up a jpg-file on specific window-coordinates. The only possible way to do this seems to be usage of eog and wmctrl.
I did not find an imageviewer, who is able to position the jpg-file exatly where i want (not eog, qiv, ..or others, they miss these options)
So I use
eog filename.jpg to pop ist up.
Then the wmctrl-command to place it on the screen
Doing on console in unix(Ubuntu):
eog filename.jpg --> eog pops it up centered.
wmctrl -a filename.jpg -e 0,10,0,600,2000 --> places it, where I want
(It doesn't matter from which directory I call eog, it also can be with directory /home/user/......(filename.jpg). For wmctrl in each case only filename.jpg is sufficent. (Also "wmctrl -r filename....... works)
Doing the same from Pythone-console, it works perfectly, too.
But: when I do the some from programcode with
cmd = "eog filename.jpg"
os.system(cmd) (or os.system("cmd"), pop-up of the file centered on the screen works
BUT:
cmd = "wmctrl -a filename.jpg -e 0,10,0,600,2000"
os.systems(cmd) -------> nothing happens, as if the os.system() command is ignored
Any idea, what could be wrong is appreciated !
(I first thought, I run into problems with filename and specific characters, but it also happens with simple names like test.jpg or so.)
on Python-console i also use
cmd =........... and
os.system(cmd) after "import os"
Sorry: I solved it by myself.
It only needs a pause before the wmctrl-command is fired !
import time
time.sleep(2) does the job (may be, 1 second also is enough)
(doing it on the console, through typing you get the pause automatically)