03/14/2007 08:02 PM, Vojtech Pavlik wrote/a écrit:
On Wed, Mar 14, 2007 at 02:58:49PM -0400, Dmitry Torokhov wrote:
2. I also have a concern about using KEY_SCREEN to signal toggling
display on and off. I am CCing Vojtech - he must know what the
original intent of this key code was. BTW, when user presses
corresponding button - does the display actually goes off? Maybe we
need another switch.
Sorry, Dmitry, I probably should have documented it back then, I don't
have the slightest idea anymore.
That's what I was afraid of ;) Well, maybe we should just use it to
indicate display switch and add a comment to that effect to input.h...
Digging somewhat deeper into my memory, I think it just so happened that
there was a keyboard with a key with a pictogram of a computer screen on
it with no really defined purpose. Since at that time there was only a
limited number of different extended keyboard types, it was added.
I think it'd make sense to use it eg. for the key that switches between
internal and external output on laptops, if the laptop generates a
keycode for the key at all. But maybe that function is already taken by
KEY_SWITCHVIDEOMODE ...
Ok, so let me summarize:
There are two kinds of keys on those laptops (for which we are not sure
about the keycode that it should generate):
* Laptop screen on/off
* Display output selection (for instance: laptop/external/both)
The possible keycodes that we could assign to them:
KEY_SCREEN
KEY_MEDIA
KEY_MODE
KEY_VIDEO
KEY_SWITCHVIDEOMODE
KEY_COMPUTER
KEY_PC
From the discussion, I had the feeling this association would be the
less incorrect:
Screen on/off : KEY_SCREEN
Display selection : KEY_SWITCHVIDEOMODE
Is that ok with everyone? If not, please suggest something better ;-)
See you,
Eric
PS: So far, I believe that for all laptops, those keys are just normal
keys (as opposed to a key which would also do by itself its intended
action). At least on a 3020, pressing "screen on/off" doesn't
automatically switch on/off the screen.
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