[wp-trac] [WordPress Trac] #33311: TB_window spinner should probably disappear when loading is done

[WordPress Trac]

#33311: TB_window spinner should probably disappear when loading is done
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 Reporter:  niklasbr     |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Plugins      |     Version:  4.2.4
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:  ui, javascript, administration,
                         |  performance
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Comment (by niklasbr):

 @afercia, as you say it does cut the CPU usage in half when using Firefox
 39 on my MacBook Pro. But in my quick testing Chrome does not seem to care
 whether or not box-shadow is active and repaints the entire TB_window
 area, and Safari seems to only repaint the 20x20 area.

 I don't think removing the box-shadow is a reasonable solution in any case
 since .media-modal-content has a shadow and I think consistency is
 important.

 I'll dive deeper into this by the end of the week, see what I can do about
 a patch.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33311#comment:6>
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