[wp-trac] [WordPress Trac] #21810: Improve intermediate image size handling

[WordPress Trac]

#21810: Improve intermediate image size handling
-------------------------+-----------------------------
 Reporter:  koopersmith  |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Future Release
Component:  Media        |     Version:  3.5
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by MikeSchinkel):

 Repeating what I wrote [http://make.wordpress.org/ui/2014/07/07/feature-
 plugin-improving-image-editing/#comment-24416 here]:


 1. Core needs to add a concept of ''“Image Type”'' that can be added using
 PHP code, i.e. maybe something like:

 {{{
 add_image_type( $type, array(
   'label' => $label,
   'sizes' = array(
     'small' => '75x75',
     'medium' => '200x150',
     'large' => '500x300',
     'xlarge' => '1024x768'
   )
 ));
 }}}

 This would allow core to generate only the sizes needed for those types,
 allow for easier filtering of images (by type) and empower plugin and core
 developers to enhance UX for functionality related to images. Examples of
 types might be `'headshot'`, `'hero'`, `'featured'` and so on.

 2. Once we have image types and sizes, filenames could be augmented with
 that information, i.e. instead of `jsmith-500x300.jpg` it could be renamed
 to `jsmith-large-headshot.jpg`.

 3. And if core does not do 2., at least it could remove the sizes from the
 filenames when it resizes a file so that you don’t get this kind of name
 `jsmith-500x300-75x75.jpg` but instead just `jsmith-75x75.jpg`.

 4. Note the sizes I included above are not the same aspect ratios so it
 would be nice of by setting those sizes for a type that WordPress core
 would present a UI to the user to crop those sizes separately.

 5. It would really be nice if core could add an option to generate image
 files on demand the first time an image is externally accessed rather than
 on upload so that you don’t end up for an order of magnitude more image
 files on disk then are actually ever used.

 Wasn't sure if I should post this as a separate ticket or not...

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Ticket URL: <https://core.trac.wordpress.org/ticket/21810#comment:28>
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