901859 - [B2G][Helix][Gaia][meijinfang]Button backlight is same to lcd baclight.

Status: RESOLVED DUPLICATE of bug 911242

(Firefox OS Graveyard :: General, defect, P2)

Description

[lecky]

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; aff-kingsoft-ciba; .NET4.0C; .NET4.0E)

Steps to reproduce:

1.Put the device under a light.
2.Block the window of light sensor.




Actual results:

The button backlight will automatically adjusted to a lower brightness, same to screen backlight.



Expected results:

Can we control it as below:
1.If the light of enviroment become brighter, the button backlight will become lower.
2.If the light of enviroment become lower, the button backlight will become brighter.

If the light of enviroment is bright enough, the button backlight can be set 0, this can save power.

Please help to check, thanks!

Comment 1

[Evelyn Hung]

Gaia has no control to button backlight. I guess this should be fixed in Gecko?

Comment 2

[viral [:viralwang]]

Hi Fred,

Do you have any suggestion in this bug?
I think we may not combine button and backlight in same criteria.
Thank you.

Comment 3

[[e-mail]]

I think backlight and LED might have connection in lower level (even hard-wired). So its up to device vendor to tune that behaviour.

Comment 4

[Evelyn Hung]

Per our API design, the button backlight is coupled with screen backlight, so they share the same scenario: in a darker environment, the screen/button light will be lower, and vice versa.
UX team, can you provide your opinion here? do we want button backlight works as bug description?

Comment 5

[Stephany Wilkes]

Flagging Eric as I'm not sure who is best to take this. Eric, please feel free to reassign as necessary, but this felt more VxD than IxD.

Comment 6

[lecky]

add a control  as below:
if we  do not operate the phone, the button backlight dose not light .

Comment 7

[Wayne Chang [:wchang]]

Josh, maybe you can help moving this along?
It does make sense that 

For the screen
- brighter as ambient gets brighter and vice versa

for the home key backlight
- dimmer as ambient gets brighter (because you have the printed button)

Comment 8

[Eric Pang [:epang] UX]

(In reply to Stephany Wilkes from comment #5)
> Flagging Eric as I'm not sure who is best to take this. Eric, please feel
> free to reassign as necessary, but this felt more VxD than IxD.

Hi Evelyn, sorry I only saw this now.  I agree with your opinion of the light becoming dimmer when it's brighter.  I think it should work similarly to auto brightness.  Where the screen gets brighter when there's more light around (for visibility).  When the ambient light is lower it makes sense for the back light to dim as well since it should be easier to see the screen.  Josh, what do you think?

Comment 9

[lecky]

Hi,Eric

If we want  add a control  as below:

when we  do not operate the phone, the button backlight dose not light .

can you tell me how to do?

Comment 10

[Evelyn Hung]

(In reply to lecky from comment #9)
> Hi,Eric
> 
> If we want  add a control  as below:
> 
> when we  do not operate the phone, the button backlight dose not light .
> 
> can you tell me how to do?
Before going to implementation detail, I believe you may want to know how UX guy think of this design. Eric can provide UX advice, not Gecko implementation.

Comment 11

[lecky]

hi,Eric can give some advice. 

thanks

Comment 12

[Eric Pang [:epang] UX]

(In reply to lecky from comment #11)
> hi,Eric can give some advice. 
> 
> thanks

Hi, I'm a bit confused of what is needed here.  Can you help clarify? Thanks!

Comment 13

[lecky]

Hi,Eric

I am sorry.

My means as fllow.

1.If the light of enviroment become brighter, the button backlight will become lower.
2.If the light of enviroment become lower, the button backlight will become brighter.
3.If the light of enviroment is very  brighter,we  do not operate the phone, the button backlight dose not light.

If I want add above fucntion .please tell me  how to do.
Which specific document control, where? at the same time ,pleas tell me What a program you are most likely to accept?

thanks
my phone number is 027-595994981

Comment 14

[Eric Pang [:epang] UX]

(In reply to lecky from comment #13)
> Hi,Eric
> 
> I am sorry.
> 
> My means as fllow.
> 
> 1.If the light of enviroment become brighter, the button backlight will
> become lower.
> 2.If the light of enviroment become lower, the button backlight will become
> brighter.
> 3.If the light of enviroment is very  brighter,we  do not operate the phone,
> the button backlight dose not light.
> 
> If I want add above fucntion .please tell me  how to do.
> Which specific document control, where? at the same time ,pleas tell me What
> a program you are most likely to accept?
> 
> thanks
> my phone number is 027-595994981

Hi Lecky, sorry I don't think I've the correct person to provide information on this (I'm part of the visual design team). Stephany, can you help point Lecky in the right direction? Thanks!

Comment 15

[lecky]

Hi,Stephany
can you help me.If you see the message, please reply as soon as possible.

thanks 
wufumin

Comment 16

[Wayne Chang [:wchang]]

We currently do not have the ability to control screen and key backlights independently.

A bug has been filed to decouple the controls.

Comment 17

[Wayne Chang [:wchang]]

Adding to device backlog.

This is a feature request and will not be included on v1.1.

Comment 18

[Stephany Wilkes]

Please re-flag me if anything else is needed here from the UX side. Please flag Product if there's a question of whether or not this feature should/will be included in the 1.4 backlog.