[wp-trac] [WordPress Trac] #21389: Retina theme custom headers

[WordPress Trac]

#21389: Retina theme custom headers
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 Reporter:  nacin              |       Owner:  joemcgill
     Type:  task (blessed)     |      Status:  assigned
 Priority:  normal             |   Milestone:  4.4
Component:  Customize          |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  responsive-images  |     Focuses:
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Comment (by Otto42):

 The proposal I made 3 years ago was along the same lines as what @azaozz
 is saying. Basically, we need a wrapper function for themes to use to
 generate the entire IMG tag. I suggested get_header_image_tag() and
 header_image_tag(), although those names might not be exactly right.

 Having a helper function for themes to use to generate this greatly
 simplifies the problem for the case of "fixed width" header.

 Flexible width headers is still on the table though. If a theme chooses to
 support these, then having some way for it to specify breakpoints on the
 width would be nice (essential, really). A theme can specify desired
 widths, and the header uploader/cropper can generate those specific widths
 for that header image only, instead of simply using all the normal image
 widths.

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Ticket URL: <https://core.trac.wordpress.org/ticket/21389#comment:27>
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