1 bit image appears negative in dark mode

[espruino-discuss2]

Posted at 2022-06-24 by blogmywiki

I have a 1 bit image without transparency that appears negative when the watch is in dark mode (BangleJS2).

Is there any way of over-riding this, or should I just use 4-bit mode? (Which would be a shame as I think the string will become longer, and the image just comprises black and white pixels).

Grateful for any advice!

(Reason is building watch face below:)

[espruino-discuss2]

Posted at 2022-06-24 by PeerDavid

You can fix colors via"g.theme.fg=..." and "g.theme.bg=..." or you can call g.setColor("#fff"); before drawing the image... not sure if there are better options :)

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Posted at 2022-06-24 by blogmywiki

Thank you - I'll give that a go!

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Posted at 2022-06-24 by PeerDavid

Btw the watchface looks really great I will definitely download this one :D

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Posted at 2022-06-24 by blogmywiki

Thank you - and thank you for spotting the error in the JSON file. Hope to change the icons as well later tonight or tomorrow.

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Posted at 2022-06-28 by @gfwilliams

Yes, the 'issue' is that if you have a 1bpp (or 2) unpaletted image, it's drawn in the current FG and BG colours - it's done so you can easily colour images just by using setColor.

... but it does mean that unless you set the colours first, the current theme gets used.

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Posted at 2022-06-28 by blogmywiki

Thanks Gordon - makes sense!