Add E-Ink Mode theme support for e-ink displays

[VBansal99]

Summary

The new mode provides a high-contrast, black-and-white visual style optimized for e-ink screens.

Related Issue

Fixes #2457 — High contrast mode for e-ink displays

Changes

• Added a new theme option: “E-Ink Mode” in UI settings
• Updated applyTheme() method to recognize and apply the new theme
• Added corresponding styles in styles.xml
• Improved compatibility for devices with limited grayscale rendering

Screenshots

(Add screenshots showing before and after, if possible)

Notes

• Icons remain grayscale but render fine with dithering on e-ink screens
• This is a lightweight addition with minimal performance impact

Checklist

• Tested locally on emulator or device
• Verified dark/light themes still work correctly
• Connected to GitHub issue High contrast mode for e-ink displays #2457

[marunjar]

@VBansal99 As there were already complaints because AMOLED dark theme contains the word AMOLED maybe theme should be named more general and not use eInk at all IMO.

Instead we can use somthing like e.g. black on white, high contrast, or something else.

What do you think?

[VBansal99]

@VBansal99 As there were already complaints because AMOLED dark theme contains the word AMOLED maybe theme should be named more general and not use eInk at all IMO.

Instead we can use somthing like e.g. black on white, high contrast, or something else.

What do you think?

yes , we can do this. i have some name like Paper Mode , Ultra Contrast , Reading View like this

[VBansal99]

@marunjar done the changes suggested by you

[marunjar]

Fixed one last thing for myself now.
Looks good so far, quite the opposite of amoled dark theme with black on lots of white :)

[VBansal99]

@marunjar so now it is ready to merge ? or any change required.

[marunjar]

@marunjar so now it is ready to merge ? or any change required.

Waiting for some feedback on #2457 now.

[VBansal99]

@marunjar so now it is ready to merge ? or any change required.

Waiting for some feedback on #2457 now.

Okkay

[marunjar]

I would suggest to only use black and white, and instead of using a highlight color, use bold and/or underlined black text. I made a mockup with underlines in the last photo. This would also improve readability of the operating system top bar.

As more black on white is wanted, maybe the same items should be set for new theme as already done for amoled-dark.
Like android:windowShowWallpaper, searchColor, ...

[VBansal99]

@marunjar done some changes

[VBansal99]

@marunjar done some changes, please review this.

[marunjar]

Looks fine to me, but I lack some eink device.
Can you provide something on #2457 to get some feedback?

[VBansal99]

Looks fine to me, but I lack some eink device. Can you provide something on #2457 to get some feedback?

Actually i could not understand that issue properly.