Andrew Ozz 855ba2518b Responsive images:
- Introduce `wp_calculate_image_srcset()` that replaces `wp_get_attachment_image_srcset_array()` and is used as lower level function for retrieving the srcset data as array.
- Use the new function when generating `srcset` and `sizes` on the front-end. This is faster as no (other) image API functions are used.
- Change the `wp_get_attachment_image_srcset()`. Now it is meant for use in templates and is no longer used in core.
- A few logic fixes and improvements.
- Some names changed to be (hopefully) more descriptive.
- Fixed/updated tests.

Props joemcgill, jaspermdegroot, azaozz.
See #34430.

git-svn-id: https://develop.svn.wordpress.org/trunk@35412 602fd350-edb4-49c9-b593-d223f7449a82
2015-10-28 05:40:04 +00:00
2015-10-28 05:40:04 +00:00
2015-10-28 05:40:04 +00:00
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