On 19/03/10 15:00, Sohail Mirza wrote: > With this focus on colours and subtle changes in brightness, what's > the plan for accommodating users with vision impairments? > > Under the outline you've given, users with even simple red-green > colour blindness would not be able to distinguish what the severity of > a message is. With a complete lack of reliance on movement or > position, some users may have a very difficult time interpreting the > various messaging idioms being discussed here. There's a brightness difference between the no-messages state, and the "you have messages" state. There are no alarm or warning states (no green vs red issues). And beyond that, this does not aim to be a perfect solution. The indicators are addressed over dbus, it would be preferable to have a11y-oriented specialist listeners to handle special cases than to compromise the design for the default case. You can, for example, produce a messaging menu client which announces changes in a way that is appropriate, either with a large text overlay for the hearing impaired, or with speech synthesis for the visually impaired. Mark
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