[wp-trac] [WordPress Trac] #28328: Focus on editing, while editing

[WordPress Trac]

#28328: Focus on editing, while editing
-------------------------+-------------------------------------------------
 Reporter:  markjaquith  |       Owner:
     Type:  task         |      Status:  new
  (blessed)              |   Milestone:  4.0
 Priority:  high         |     Version:
Component:  Editor       |  Resolution:
 Severity:  critical     |     Focuses:  ui, accessibility, javascript,
 Keywords:  has-patch    |  administration
  needs-testing          |
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Comment (by stephdau):

 Replying to [comment:77 azaozz]:
 > > ...make the sidebar scroll only proportionately to how tall it is
 compared to the viewport
 > Yeah, was looking at that/testing but couldn't get it to work well. Will
 give it another try. Any ideas on how to get that working well are very
 welcome :)

 I'll be frank, it's above my math-paygrade. ;)

 But the way I understand it: if I scroll 1/3 of the way down in the
 document, the sidebar should only scroll 1/3 of the way down inside the
 vieport.

 So say:
 {{{
 $sidebarHeight = 1000;
 $documentHeight = 1100;
 $viewportHeight = 600;
 $sidebarTop = 0; // top, which it's not IRL but bear with me
 $windowPos = [current position];

 onscroll:
 $sidebarTop = abs( $viewportHeight / abs( $documentHeight / $windowPos )
 );
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/28328#comment:78>
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