Add brightness-mode-explainer.md. #334
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Related to w3c#129 and w3c/devicesensors-wg#51 for more context. The contents come from https://docs.google.com/document/d/1skbEBafMjKnYVC7UoJfRgnnhAkp-jx0k_Z4j6eZeOwc/edit?usp=sharing which was used while hashing out the basics and the structure. Now that the contents have matured a bit, it is time to move this to an explainer and continue iterating here.
rakuco
requested review from
reillyeon,
beaufortfrancois,
anssiko and
marcoscaceres
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+@willmorgan who doesn't seem to be part of the WG so I couldn't formally add as a reviewer. Compared to a regular explainer, this one has a slightly different structure: we don't have the API fully hashed out, and the "considered alternatives" section was renamed to "proposed solutions", which serves a somewhat different purpose and indicates that we are still open to the ideas presented there. |
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Thanks! I like there are multiple proposed solutions. It really shows this seemingly simple API has received careful scrutiny from various perspectives.
This is how most specs are made, it is just that usually the sausage making process is not this carefully documented :)
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(despite my objection, I'm still really thankful that this is coming along ... great work @rakuco and team) |
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Thanks @marcoscaceres, I think it is reasonable to put all the ideas under the proposed solutions, including the API draft. @rakuco was simply implementing the group's resolution https://www.w3.org/2021/11/17-dap-minutes.html#r01 that did not perhaps have the best wording ever. That error is on me, my apologies for that. |
brightness-mode-explainer.md
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| - Things to consider in the spec proposal | ||
| - UAs should be free to limit maximum brightness level and/or do other things like increase contrast. | ||
| - Idea is to focus on mobile first (i.e. not worry about external displays). How to indicate that in the spec? Does it *need* to be indicated in the spec? |
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It might make sense to file a TAG early review request, highlighting that you would like feedback on these points.
| - Should this trigger "`prefers-contrast: more`" in [CSS Media Queries](https://drafts.csswg.org/mediaqueries-5/#prefers-contrast)? | ||
| - From [https://github.com/w3c/devicesensors-wg/issues/51](https://github.com/w3c/devicesensors-wg/issues/51) | ||
| - Brightness levels | ||
| - How bright is too bright? Consider 100% brightness with HDR displays, for example. |
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I guess you could talk about specific nit values
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What do you mean by "nit values"?
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It is a unit for light intensity: https://en.wikipedia.org/wiki/Candela_per_square_metre - it is very common to use it for displays.
Good article: https://www.maketecheasier.com/what-is-nit-of-screen-brightness/
"Technically, a device starts counting as “sunlight-readable” when it hits at least 1,000 nits, but very few mobile displays go that high. As a general rule, anything above 400 to 500 nits will do pretty well on a sunny day, but at 200 nits, you may have to find some shade to answer texts."
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I see. I'm used to "nit' being short for "nitpick", which makes some of those sentences very funny to read :-)
Do you know if nits are exposed by any platform?
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I don't know sorry. But on Android you at least seem to be able to get the max range: https://stackoverflow.com/questions/4544967/get-preferred-screen-brightness-in-android/8114307#8114307
Co-authored-by: François Beaufort <beaufort.francois@gmail.com>
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Thanks for the edits, @tomayac! It's finally time to merge this PR \o/ |
@rakuco Do you want to share https://github.com/w3c/screen-wake-lock/blob/gh-pages/brightness-mode-explainer.md with Apple and Mozilla? |
My plate's a bit full at the moment, so I'd appreciate it if someone like @marcoscaceres could take this up after having provided so much valuable feedback :-) |
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@marcoscaceres (gentle ping) |
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If @marcoscaceres is okay with that, I can start sending an email to webkit-dev@ and request a position at https://github.com/mozilla/standards-positions/ |
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I'd say go for it :-) |
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Here it is:
Feel free to star/subscribe to those threads to follow along. |
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Awesome, thanks! |
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FYI Mozilla folks have started giving feedback on this document at mozilla/standards-positions#623 |
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I opened #335 for API design discussion based on Mozilla's feedback. |
Related to #129 and w3c/devicesensors-wg#51 for more context. The contents
come from
https://docs.google.com/document/d/1skbEBafMjKnYVC7UoJfRgnnhAkp-jx0k_Z4j6eZeOwc/edit?usp=sharing
which was used while hashing out the basics and the structure.
Now that the contents have matured a bit, it is time to move this to an
explainer and continue iterating here.