can we change gamma value by input a number directly?

[kkzxak47]

press +/- more than 10 tims is exhausting...

If I pressed too many times and lost count of it, then it will flash on and on and on... In the precess I cannot do anything about it.

[tigran123]

What is the file on which you need to increase gamma by pressing Vol+ 10 times?

Besides, even if there was such a file (which I doubt, unless it was deliberately typeset with "light grey on white") you would only have to set gamma once. It is stored in the settings for this book and loaded on re-opening it.

[kkzxak47]

In Chinese scanned PDF world, such files are more than you could imagine...
Sometimes pages in one file are different in depth of color, I have to do it back and forth from page to page.

[tigran123]

Ah, I see. Ok, I suppose this feature can be easily implemented.

[kai771]

@kkzxak47
You can try my fork of KPV, called Librerator. You can get it here:
https://github.com/kai771/kindlepdfviewer/downloads
Although it doesn't have setting gamma by inputing a number directly (yet), it has a different approach to calculating it than mainstream KPV - instead increasing it 10% to current value, it adds the predefined step. The value of the step can be set editing defaults.lua file, option DGAMMA_STEP (default is 0.2). It might better suit your needs.

[kai771]

If anyone is interested, you can change gamma value by inputting a number in Librerator now.