[Wikidata-bugs] [Maniphest] [Commented On] T106523: Possible issue with srcset?

[Jdlrobson]

Jdlrobson added a subscriber: Jdlrobson.
Jdlrobson added a comment.

I can replicate this.
In iPhone6 plus in the ios simulator provided by xcode... in landscape mode it 
is downloading a 320px banner.

Looking at caniuse, there is only partial support in safari 8 which would 
explain this.
http://caniuse.com/#feat=srcset
(it only supports the x selector not w)

In the process it would also be good to think about IE if necessary and easier.
Right now pages that do not support srcset are loading 1280px banner - we 
really need to avoid this.
I would suggest rethinking the fix to I0b659b30b89171a91c70b0e243accf7f0046d1b6 
- loading the highest resolution banner is not a good idea. Load the smallest, 
and adjust with JavaScript when no support to avoid blurriness.


TASK DETAIL
  https://phabricator.wikimedia.org/T106523

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To: Jdlrobson
Cc: Jdlrobson, Sumit, Aklapper, Wikidata-bugs, Lydia_Pintscher, Malyacko, P.Copp



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[Wikidata-bugs] [Maniphest] [Commented On] T106523: Possible issue with srcset?

[Sumit]

Sumit added a comment.

I tried to reproduce the bug by he steps mentioned, i.e.m using developer tools 
of chrom and changing user-agent.
I got the following results which were expected:
iPhone6 loads a 640px banner which is expected:
F206890: Screenshot from 2015-07-22 20-11-34.png 
https://phabricator.wikimedia.org/F206890
iPhone6 plus loads a 1280px banner which is expected due to its device-pixel 
ration being 3:
F206893: Screenshot from 2015-07-22 20-12-03.png 
https://phabricator.wikimedia.org/F206893


TASK DETAIL
  https://phabricator.wikimedia.org/T106523

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To: Sumit
Cc: Sumit, Aklapper, Wikidata-bugs, Lydia_Pintscher, Malyacko, P.Copp



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