19

I'm studying a lot on screen because of the Covid19 pandemic. And it tears my eyes apart.

brieucdug@msi:~$ lsb_release -d && uname -r
Description:    Ubuntu 20.04 LTS
5.4.0-37-generic

(gnome-shell)

Resume

I've set the dark mode on, but it inverts image as well on a greyscale. I do not want that. I've set my Okular setting like that (Background : Dark Grey / Font : White)

okular-setting

sample

What I'm looking for

Right now, I've set a shortcut to toggle colors.

However, what I'd love, your guess, is that :

result-want

What I found

I found these two files

/usr/share/config.kcfg/okular.kcfg
/usr/share/config.kcfg/okular_core.kcfg

With, respectively,

brieucdug@msi:~$ cat /usr/share/config.kcfg/okular.kcfg
...
<group name="Dlg Accessibility" >
  <entry key="HighlightImages" type="Bool" >
   <default>false</default>
  </entry>
  <entry key="HighlightLinks" type="Bool" >
   <default>false</default>
  </entry>
  <entry key="RecolorForeground" type="Color" >
   <default code="true" >0x600000</default>
  </entry>
  <entry key="RecolorBackground" type="Color" >
   <default code="true" >0xF0F0F0</default>
  </entry>
  <entry key="BWThreshold" type="UInt" >
   <default>127</default>
   <min>2</min>
   <max>253</max>
  </entry>
  <entry key="BWContrast" type="UInt" >
   <default>2</default>
   <min>2</min>
   <max>6</max>
  </entry>
 </group>
...

brieucdug@msi:~$ cat /usr/share/config.kcfg/okular_core.kcfg
...
<group name="Document">
  <entry key="PaperColor" type="Color" >
   <default code="true" >Qt::white</default>
  </entry>
  <entry key="ChangeColors" type="Bool" >
   <default>false</default>
  </entry>
  <entry key="RenderMode" type="Enum" >
   <default>Inverted</default>
   <choices>
    <choice name="Inverted" />
    <choice name="Paper" />
    <choice name="Recolor" />
    <choice name="BlackWhite" />
   </choices>
  </entry>
 </group>
...

In the first file okular.kcfg, there is no mention about the pictures.

In the second one okular_core.kcfg, however, I thought I touch something with <choice name="Inverted" />, but nothing (I didn't tried to reboot, tho).

So, if anyone know how I could fin a workaround to get it to work as I want, I'm all ears ! :-)

Thank you, Brieuc.

PS : Sorry for these teeth pictures, hope you won't have any nightmare. Edit :

B. du Garay
  • 291

1 Answers1

2

Let's look on it, or how we would say in Czechia "We'll look at the tooth of it" :)

Best what you can accomplish by Okular is this enter image description here (The black zone doesn't include text, i didnt put it there, but its inverted)

You can do this by

Accessibility > Change Colors > Color Mode > Invert the brightness (its translated)

So you were close. :)

jirimertin
  • 121