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Re: how to implement activate** as an author?

From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
Date: Thu, 17 Jun 2010 12:32:43 +0200
To: Jonathan Chetwynd <j.chetwynd@btinternet.com>, www-svg@w3.org
Message-Id: <201006171232.43839.Dr.O.Hoffmann@gmx.de>
Jonathan Chetwynd:
> Olaf,
> unfortunately the activate provided by squiggle/batik is merely a
> pseudonym for click,
> according to my test it responds to click but not enter
> iirc cameron has for some time been concerned with the lack of
> keyboard navigation.

Because it is mentioned, that activate is considered to be a device
independent event, one cannot expect, that the definition is very
detailed about the question, how to implement such an event into
a specific device. In doubt the documentation of the device has to
describe how a user creates an activate event. 
But every device should have an intuitive or simple method to
create such an event.

For example without a pointing device a user-agent might provide
together with the text alternative (elements title, desc etc) a list
of possible activations and the user can select the item to activate
by tabs or keys within such a list - why not?

> however your response regarding the failure of other UAs to provide
> functionality does not prevent you proposing a single suitable
> solution with testcase,
> for a variety of different input devices.
> And it might be hoped that such a discussion might better enable
> implementation.

I think, the test can only mention something like: 
<circle id="b" r="1">
activate to begin the motion of the funny dog.

In doubt read the documentation of your viewer, how to activate elements.
If a pointing device is available, this means typically to click the element.
Other methods maybe are available as well. 
<animateMotion xlink:href="#funnyDog" begin="b.activate" ... />

> It may even be necessary to raise an errata, as the gross failure to
> implement may at least be suggestive.

Well, for example my bug report for Opera about this is about 5 years
old (bug-174503) ;o)

Received on Thursday, 17 June 2010 10:37:39 UTC

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