Site analytics aren't accessible (e.g. for vision impaired people) [#1342658]

Comment	File	Size	Author
#7	screenshot_004.png	53.31 KB	mstef
#6	drupal_commons-update-quant-revision-1342658.patch	489 bytes	mstef

Comment #1

mstef CreditAttribution: mstef commented 8 December 2011 at 19:45

The images are generated via Google Charts API. To the best of my knowledge, and since I'm the maintainer of Quant, the module producing these charts, I don't think you can specify ALT tags for the images. Do you think it would be useful if there was an admin option to not use charts, but switch to text-based stats?

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Comment #2

ezra-g CreditAttribution: ezra-g commented 8 December 2011 at 19:51

IIRC, Google chart images are generated entirely by query string. What prevents Quant from either adding an alt tag to the image or (less ideal) including additional markup that describes the chart data?

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Comment #3

mstef CreditAttribution: mstef commented 8 December 2011 at 20:35

chart_render() is used to generate the chart via Google. The entire HTML is returned. I'm not sure how you'd inject an ALT tag. If you're visually impaired and cannot read the chart, I don't know how an ALT tag would be useful, other than saying that the chart is. I'd need to review Chart and Google Charts API to see if ALT tags are an option.

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Comment #4

ezra-g CreditAttribution: ezra-g commented 8 December 2011 at 20:38

Looking at chart_render(), looks like we can pass an $attributes array - couldn't we put an alt in there with some amount of data there? http://drupalcode.org/project/chart.git/blob/refs/heads/6.x-1.x:/chart.m...

Or, if this doesn't translate well to text in an alt tag, present an HTML table?

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Comment #5

mstef CreditAttribution: mstef commented 8 December 2011 at 21:37

I was thinking HTML table with some numeric data. The quant objects are loaded with all of the data, aside from the charts. I suggested creating an admin setting that used text instead of images, then just plotting out some simple tables. Would take some work, but totally doable.

What do you think?