Last modified: 2012-10-25 17:39:37 UTC

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Bug 13493 - Can't create thumbnail of images with a peculiar aspect ratio
Can't create thumbnail of images with a peculiar aspect ratio
Product: MediaWiki
Classification: Unclassified
File management (Other open bugs)
All All
: Low minor (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
Blocks: 41371
  Show dependency treegraph
Reported: 2008-03-24 18:31 UTC by Broken Arrow
Modified: 2012-10-25 17:39 UTC (History)
2 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Description Broken Arrow 2008-03-24 18:31:54 UTC
Thumbnailing very tall and narrow images, whose width is only a few pixels (like the one above, 2 × 295 pixels) does not work in galleries. According to Brion, the code may be trying to scale to less than 1 pixel wide. Example:
Comment 1 Brion Vibber 2008-03-24 20:49:41 UTC
The base problem is that MediaWiki tracks thumbnails by width, and here we're requesting a size that's not going to fit in the 120x120 box... The 1px-wide image will be ~148 pixels tall, so it has to back down a pixel to 0px... which is invalid.

(Note that the equivalent horizontal bar renders to a 120x120 box just fine, since we can request the exact desired width.)

Probably what we want to do here is take the 1px version, then if necessary scale it client-side to fit vertically.
Comment 2 Bryan Tong Minh 2011-03-12 20:34:15 UTC
Client side scaling for <1px images in either direction looks like the best solution to me.
Comment 3 Bryan Tong Minh 2012-10-25 17:39:37 UTC
This was fixed somewhere along the way.

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