D15071: Don't draw frames and shadows around images with an alpha channel

[Nathaniel Graham]

ngraham added a subscriber: markg.
ngraham added a comment.


  @bruns, done.
  
  @broulik, @markg I too was concerned about the case of images that have an alpha channel but not actual transparency. I did not actually have any images on my computer that had an alpha channel but no transparency, so I made one with GIMP: I took a PNG with an alpha channel and transparency and I cropped it to remove all the transparency, but I left the alpha channel. I then made another version of the same image that has no alpha channel. Both are correctly seen as not having any transparency and given a frame. See the two top-left images:
  
  F6215000: Alpha but no transparency.png <https://phabricator.kde.org/F6215000>

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D15071

To: ngraham, #frameworks, #dolphin, #vdg, broulik, cfeck
Cc: markg, abetts, bruns, kde-frameworks-devel, michaelh, ngraham
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