[wp-trac] [WordPress Trac] #23039: WP_Image_Editor_GD does not preserve alpha if is not resized

[WordPress Trac]

#23039: WP_Image_Editor_GD does not preserve alpha if is not resized
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 Reporter:  joehoyle      |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  3.5.1
Component:  Media         |     Version:  3.5
 Severity:  normal        |  Resolution:
 Keywords:                |
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Comment (by joehoyle):

 I did try and use `wp_imagecreatetruecolor `, however that creates an
 empty gd canvas, so we would need to get width / height of the original,
 then copy it over to the new `wp_imagecreatetruecolor` canvas. That works
 ok fo resize etc as it's being copied from resource to resource, however
 on load I thought it was maybe more complicated that just calling on it
 directly was simpler.

 I also wrote some basic unti tests for this, `test_image_preserves_alpha`
 passes after applying patch.

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Ticket URL: <http://core.trac.wordpress.org/ticket/23039#comment:7>
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