Re: [g-a-devel]Support for Color in ATK

["Draghi Puterity" <mp baum de>]

Hi, and a happy new year !

My oppinion is that color is important for accessibility.

We will also certainly have (missbehaved?) applications which will use color
to denote some kind of state (BearShare under Windows is comming into my
mind - you have some kind of coloured progress bars which denotes the server
bandwith [progbar color] and the available slots [progbar width]). But there
will be more like this, I'm sure.

RGB format will be enough. An acessibility utility would present a number
predefined color like "red", "light blue" and so on and/or the RGB triplet
itself.

Best regards,
Draghi


----- Original Message -----
From: "Bill Haneman" <Bill Haneman sun com>
To: <gnome-accessibility-devel gnome org>; <Padraig Obriain sun com>
Sent: Friday, January 04, 2002 3:07 PM
Subject: Re: [g-a-devel]Support for Color in ATK


>
> >Delivered-To: gnome-accessibility-devel gnome org
> >From: "Padraig O'Briain" <Padraig Obriain sun com>
> >To: gnome-accessibility-devel gnome org
> >Subject: [g-a-devel]Support for Color in ATK
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> >Date: Fri, 4 Jan 2002 13:48:07 +0000 (GMT)
> >
> >Currently the only support for color in ATK is the text attributes
> >ATK_TEXT_ATTR_FG_COLOR and ATK_TEXT_ATTR_BG_COLOR.
> >
> >Do we need to be able to support getting and setting of foreground and
> >background colours for accessible objects which implement AtkComponent?
>
> My opinion is no, since the color information, to the extent that is is
meaningful,
> should be reflected in the STATE information (AtkState).  For well-behaved
components
> the colors should be obtained from the GTK theme on the basis of the
widgets state (see
> gtkstyle.c).  We probably should check to see that our AtkStates are
currently
> reflecting the widget state information.
>
> There may be a case to be made for obtaining colors in order for, for
instance, a blind
> or color-blind person to make sense of instructions like "press the green
button...",
> but again the real accessibility issue here is probably the use of color
as a sole means
> of conveying information.  In the absence of such accessibility "bugs" the
exposure of
> color information via ATK seems much less useful.  Anyway, what should we
present to the
> user, an RGB triplet?  It's  not clear how helpful that would be to the
end user, or
> what an assistive technology would do with the information.
>
> -Bill
>
> >Padraig
> >
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>
> ------
> Bill Haneman x19279
> Gnome Accessibility / Batik SVG Toolkit
> Sun Microsystems Ireland
>
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