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Re: Use case for indie UI events - manipulating a map

From: Arthur Barstow <art.barstow@nokia.com>
Date: Wed, 20 Jun 2012 19:05:52 -0400
Message-ID: <4FE25750.3090401@nokia.com>
To: ext Richard Schwerdtfeger <schwer@us.ibm.com>, Rick Byers <rbyers@google.com>
CC: public-indie-ui@w3.org
On 6/19/12 7:48 AM, ext Richard Schwerdtfeger wrote:
>
> Hi Rick,
>
> This is great! Doug set up a WIKI for us to add use cases for the 
> group to review. I have begun adding them. At the moment I have not 
> set a priority on mine. The current set I have started on pertained to 
> UI widget components we would need for ARIA in order to replace the 
> use of a keyboard.
>
> http://www.w3.org/WAI/IndieUI/wiki/Use_Cases_and_Requirements
>
> Could you add these to the list?
>

Yes, good idea Rich.

Rick - please go ahead and add your UCs to the above wiki. If you need 
some guidance on what is a UC versus what is Requirement, it may be 
useful to look at what the Audio WG has done with their UC+Reqs doc 
<http://www.w3.org/2011/audio/wiki/Use_Cases_and_Requirements>, and 
Doug's an expert in UCs and Requirements if you have any questions;-).

-Thanks, Art


> One of the things I have not fully stated which you appear to need to 
> do to is establish a point of regard and that is done. For example 
> Rotating an object assumes either focus on the object or the object 
> being grabbed. I have a similar issue with say a tree UI control where 
> the tree or item in the tree must either be touched by a user or have 
> keyboard focus in order to be expanded. In your rotation use case we 
> need to have the user pointing to the object in some way or it has to 
> have keyboard focus before it can be notified to rotate via a gesture, 
> etc.
>
> Establishing the point of regard or point of input is important.
>
> Could you add these to the use cases?
>
> Rich
>
>
> Rich Schwerdtfeger
>
> Inactive hide details for Rick Byers ---06/18/2012 09:45:28 PM---One 
> use case I'd really like to see the Indie UI spec handle iRick Byers 
> ---06/18/2012 09:45:28 PM---One use case I'd really like to see the 
> Indie UI spec handle is manipulating a 2D (or 3D) object lik
>
> From: Rick Byers <rbyers@google.com>
> To: public-indie-ui@w3.org,
> Date: 06/18/2012 09:45 PM
> Subject: Use case for indie UI events - manipulating a map
>
> ------------------------------------------------------------------------
>
>
>
> One use case I'd really like to see the Indie UI spec handle is 
> manipulating a 2D (or 3D) object like a map (think 
> _http://maps.google.com_ <http://maps.google.com/>).  In particular:
>
>   * Panning the object to a precise location
>       o With a mouse this is triggered by click and drag
>       o With a touch screen this is triggered by touch and drag
>       o With keyboard or some assistive technology this could be
>         triggered by arrow keys moving the map a fixed distance
>       o Panning is continuous so there shouldn't be an edge (eg. some
>         absolute co-ordinate after which it's impossible to pan)
>   *  Zooming the object in and out around a specific point
>       o With a mouse this could be triggered by the mouse wheel with
>         the origin at the mouse cursor
>       o With a touch screen this could be triggered by a pinch gesture
>         (with the origin being the midpoint between the two touch points)
>       o With a keyboard this could be triggered in steps by specific
>         standard keys
>   * Rotating the object
>   * Lower-priority but also interesting is manipulating the object in
>     3D along all the axis
>
> Thanks,
>    Rick
Received on Wednesday, 20 June 2012 23:06:29 GMT

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