"Force Dark Mode for Web Contents" using command line switch(es)

[Yuri Konotopov]

I trying to enable dark mode for web content based on time of day.

However I can not enable it using command line switches.

Nothing of that works for me:

--dark --force-dark-mode --blink-settings=inversion_method=cielab_based,image_behavior=selective,text_lightness_threshold=150,background_lightness_threshold=205

Are there any possible way to enable it using command line switches?

[Yuri Konotopov]

Anyone?

[Nicolas Ouellet-payeur]

Try --enable-features=WebUIDarkMode

On Tue, Jul 7, 2020 at 1:27 PM Yuri Konotopov <ykono...@gmail.com> wrote:

Anyone?

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[Yuri Konotopov]

Unfortunatelly, this doesn't works.

Still have white background and "Force Dark Mode for Web Contents" flag is in default state.

вторник, 7 июля 2020 г., 22:37:07 UTC+4 пользователь Nicolas Ouellet-payeur написал:

Try --enable-features=WebUIDarkMode

[Lily Chen]

Try --enable-features=WebContentsForceDark

The params for each of the modes are listed here: https://source.chromium.org/chromium/chromium/src/+/master:chrome/browser/about_flags.cc;l=431-465;drc=5ba77dad98cf94506cf3700f9e12fcdc65fadfb6

defined here: https://source.chromium.org/chromium/chromium/src/+/master:third_party/blink/common/features.cc;l=342-389;drc=7c57ca1441dba6c5113af561692e88e6c33a6ba8

You can specify the params for each group via command line using --force-fieldtrial-params: https://source.chromium.org/chromium/chromium/src/+/master:components/variations/variations_switches.cc;l=22-30;drc=c3ecfbb8149e2b8843bfaf0489e4cd4404c18adb

And then you can force yourself into a particular group via command line using --force-fieldtrials: https://source.chromium.org/chromium/chromium/src/+/master:base/base_switches.cc;l=33-41;drc=12cd16ac3a46001b853793828f67e9cd6ffc7606 

You'll have to play around with the syntax (it's pretty tricky/annoying), but that should get you started.

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[Yuri Konotopov]

Thanks a lot, this works.

As I understand it's impossible to set predefined flag value, so exact value configuration is madness.

However default value is better then nothing.

среда, 8 июля 2020 г., 0:18:00 UTC+4 пользователь Lily Chen написал: