https://bugzilla.wikimedia.org/show_bug.cgi?id=31302
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Bug #: 31302
Summary: Flipping images should be allowed though a parameter
in the [[File:]] tag
Product: MediaWiki
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Images and files
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
This issue was originally raised by one of the Persian Wikipedia editors. The
rationale is that many RTL wikis who share their file repository with a larger
LTR wikis will frequently use images that are oriented appropriately for the
LTR layout but not the RTL layout. Exapmles are:
(1) Face photos are usually preferred to be look towards the center of the
page. In English Wikipedia, for example, photos used in the infoboxes of
articles about people usually use images that look to the left. When such an
image is not available, one can flip the images horizontally and use that as an
alternative, without needing to edit the image externally and re-uploading
them.
(2) When such a face photo is shared by many wikis (e.g. when the photo is in
Commons, and both English and Arabic Wikipedia's use it), it is inevitable that
one of the wikis will end up with the file with the wrong face direction of
subject. Having a flipping parameter can fix this.
(3) Same applies to arrows, checkmarks, etc that are on Commons and are used by
both LTR and RTL wikis.
Technically speaking, this feature can be implemented as
[[File:image.png|flip=horizontally|...]] and it should be easy to implement
because we are already using GD/ImageMagick for thumbnailing which has the
capability of flipping images too.
>From file-name point of view, just as a thumbnail that is resized from original
size is named 80px-image.png, a thumbnail that is flipped from original
orientation can be named 80px_h-image.png
At the time being, I can't think of a reason why we shouldn't implement
vertical flipping as well, although I can't think of a use case either.
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