[wp-trac] [WordPress Trac] #15311: dynamic image resize (on the fly) using already available functions

[WordPress Trac]

#15311: dynamic image resize (on the fly) using already available functions
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 Reporter:  vteixeira               |       Owner:
     Type:  enhancement             |      Status:  new
 Priority:  normal                  |   Milestone:  Future Release
Component:  Media                   |     Version:  3.1
 Severity:  normal                  |  Resolution:
 Keywords:  dev-feedback has-patch  |     Focuses:
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Comment (by ericlewis):

 It's been a while. I'd like to reorient our intent on this ticket -
 alleviating issues with missing thumbnails.

 Accepting requests for generating any size image on the fly (e.g. 30x300,
 87x239) is dangerous, and opens up the server for latency of cropping an
 image. So, this doesn't sound like a good solution for WordPress core,
 which must work on the lowest common denominator of hosting environments.

 A thought that [https://wordpress.slack.com/archives/feature-
 respimg/p1419472875000069 nacin shared recently] was creating an image
 file for an image size on the fly if it fits the whitelist of registered
 image sizes. This balances the expectations of the user (where's my
 image?) with the internal APIs of WordPress. If a theme registers an image
 size, we can guarantee a file will exist for that image size. I think that
 fits the bill for this ticket quite well.

 Consider attachment:15311.2.diff a proof of concept for this approach.

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Ticket URL: <https://core.trac.wordpress.org/ticket/15311#comment:98>
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