important enhancement for kids and teens against short sightedness.
dark theme with black background against short sightedness, eye strain and better sleeping after late work
see science results in german:
and in english:
So in all software products with white background, a dark mode with dark theme against short sightedness and eye strain should be available in first step.
in android 10 a dark mode will be available.
in iOS 11+ intelligent color invert without photo invert is available.
Also significant reduction of energy consumption in smartphones, tablets and laptops with OLED display with black background.
in actual LO 6.2 themes from Firefox are not available, so dark theme of Firefox are not available.
working mode with inverted colors for white background and normal black types
is not available.
in Android 10 dark mode is coming.
in iOS 11+ intelligent color invert is available.
So libre office viewer should have dark mode.
windows 10 goes with dark theme first steps into dark mode.
LibreOffice aims to comply with the system theme (=> see also). So if you run your Android with a dark theme it should work also for this app. Please submit screenshots to illustrate the issue.
android 9.0 have a dark theme
some parts of Android 9 have dark theme.
And some apps have the dark mode of black backgroud and white letters.
in english apps with dark mode
in a greater horizont:
in future mostly the papers are only electronic and sometimes in white paper.
so a dark version of every document is necessary for healthy reading and a white version for physical paper documentation.
A future libre office 6.x should have an dark mode for doing documents and reading documents.
One button should change the view of the whole program from white to black or black to white.
so this is not a theme only for android viewer.
It is needed for the whole program.
android 10 with more dark mode for battery saving by oled-displays
windows 10 dark theme since built 10056
actual microsoft office with 2013+ have also a black theme
but without a black paper
All your links are off-topic, sorry. If you run into trouble with LibreOffice Viewer please make a screenshot of the particular issue. Talking about the desktop version there are options to change the colors. And again, supporting the system theme / mode is what we aim for not a special solution with a button or the like to switch from a to b.
Created attachment 151162 [details]
screenshot of LO test.odg in android 9 with viewer 6.1
no invert of odg with white background to black background possible.
in other apps like adobe reader with night modus is this possible.
Created attachment 151164 [details]
screenshot of acrobat reader test.pdf in android 9 with night modus
see a screenshot with acrobat reader in night modus available in android 9 (and previous system versions)
smart invert of black and white for better healthiness of eyes.
[Automated Action] NeedInfo-To-Unconfirmed
Created attachment 151383 [details]
german pdf print of geo article against short sightedness
for german developers see german geo article or this pdf.
Night modus for working and reading is necessary with modified icons and tables in all versions of libreoffice not only the viewer also in macos, linux and windows.
Bug 118320 for Windows and bug 118017 for Mac are confirmed, I guess we can do the same for this one...