- From: David MacDonald <david100@sympatico.ca>
- Date: Thu, 11 Jun 2015 09:07:56 -0400
- To: "Hoffman, Allen" <allen.hoffman@hq.dhs.gov>
- CC: Jonathan Avila <jon.avila@ssbbartgroup.com>, Gregg Vanderheiden <gregg@raisingthefloor.org>, GLWAI Guidelines WG org <w3c-wai-gl@w3.org>
- Message-ID: <BLU436-SMTP2102E27D6FE224B0098D09AFEBC0@phx.gbl>
We have no power over User Agents, and there is nothing available currently that an author can do to make headers and footers optionally turn on and off. See a full explanation here: https://lists.w3.org/Archives/Public/w3c-wai-gl/2015AprJun/0243.html that is why I think Kerstin's failure proposal is the best way forward. for reasons I propose here: https://lists.w3.org/Archives/Public/w3c-wai-gl/2015AprJun/0246.html Cheers, David MacDonald *Can**Adapt* *Solutions Inc.* Tel: 613.235.4902 LinkedIn <http://www.linkedin.com/in/davidmacdonald100> www.Can-Adapt.com * Adapting the web to all users* * Including those with disabilities* If you are not the intended recipient, please review our privacy policy <http://www.davidmacd.com/disclaimer.html> On Thu, Jun 11, 2015 at 7:55 AM, Hoffman, Allen <allen.hoffman@hq.dhs.gov> wrote: > Just so I am following this accurately. > > > > If a document does not have page numbers, headers or footers are we > requiring that such are provided? I don’t believe this would be wise. > > > > > > If page numbers, headers or footers are provided it seems what we are > discussing is the encoding based on how screen readers read the content, in > linear sequence, or in another sequence at the preference of the user. > > > > If we want user control of how such information is read it should be coded > to allow such and let default reading sequence be at the selection of the > screen reader or other product manufacturer and then provide the > alternative options as part of the assistive technology. > > > > Does this change the thinking in any way? > > > > > > > > I fully understand the difference in preferences for this as a screen > reader user, and the preference for me changes based on the type of > material I am reading, so its not an all oor nothing kind of user > preference. > > > > > > > > > > *Allen Hoffman* > > Deputy Executive Director > > The Office of Accessible Systems & Technology > > Department of Homeland Security > > 202-447-0503 (voice) > > allen.hoffman@hq.dhs.gov > > > > DHS Accessibility Helpdesk > > 202-447-0440 (voice) > > 202-447-0582 (fax) > > 202-447-5857 (TTY) > > accessibility@dhs.gov > > > > *This communication, along with any attachments, is covered by federal and > state law governing electronic communications and may contain sensitive and > legally privileged information. If the reader of this message is not the > intended recipient, you are hereby notified that any dissemination, > distribution, use or copying of this message is strictly prohibited. If > you have received this message in error, please reply immediately to the > sender and delete this message. Thank you.* > > > > *From:* David MacDonald [mailto:david100@sympatico.ca] > *Sent:* Thursday, June 11, 2015 7:23 AM > *To:* Jonathan Avila > *Cc:* Hoffman, Allen; Gregg Vanderheiden; GLWAI Guidelines WG org > *Subject:* Re: Should PDF documents have headers and footers on every > page? > > > > >>>Well, it could be a user agent option. For example, there is a > specific artifact type for pagination – so there seems like the option to > expose this information on request since it already has to be properly > coded as pagination. > > David response: > > There are a couple of ways to respond to that. The first is that I'm not > sure that would be so easy. If "user agent option" means the screen reader > could query for the pagination artifact and have a setting to speak it or > not, I don't think so. I don't think the Screen reader has access to the > code, it only has access to the tag tree. And from what I can see, there > does not appear to be a distinction between a pagination artifact and any > other sort of artifact. > > If you mean that the PDF reader could expose it, that would be possible, > but it would have to sniff for that artifact in the code and then convert > it to some sort on other tag in the tag tree so that the screen reader > would recognize it, yet ignore other types of artifacts in the document. > Further, there is no distinction between pagination artifacts that are > changing from section ti section or page to page and other types of running > headers and footers which are also pagination artifacts. The PDF spec is > not that granular. > > All this to say that I don't think this is a realistic expectation, and an > onerous demand upon user agents, and difficult to implement with the > current PDF standard. > > The second way to answer this is that WCAG attempts to solve the > *practical* problem of inaccessible content now, rather than shoot for a > theoretical target. So our "accessibility supported" requirement wouldn't > make assumptions that in the future this or that user agent behaviour could > overcome a particular problem. The content fails now if it is not > accessibility supported now. > > All this to say I'm in favour of Kerstin's failure suggestion, > "Failure of 1.3.1 due to information in the header or footer not being > available in main body of the document" > and a reworking of PDF14 so it is consistent with itself. >
Received on Thursday, 11 June 2015 13:08:28 UTC