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

[Bill Haneman <Bill Haneman sun com>]

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>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)
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>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