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Re: [whatwg] Effect of image-orientation on naturalWidth/Height

From: L. David Baron <dbaron@dbaron.org>
Date: Tue, 10 Mar 2015 10:09:20 -0700
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Message-ID: <20150310170920.GA11559@pescadero.dbaron.org>
Cc: WHATWG List <whatwg@whatwg.org>, Seth Fowler <seth@mozilla.com>
On Monday 2015-03-09 16:52 -0700, Tab Atkins Jr. wrote:
> That's a good question.  I suspect that .naturalWidth/Height should
> return the image's dimensions before applying CSS rotations.  This is
> likely to be surprising, but also probably the correct answer for
> separation-of-concerns reasons.
> I wonder whether I need to tweak Images, or Hixie needs tweak <img>. Hmm.

I really think that the mechanism for opting in to honoring EXIF
should make the browser act as though the rotation were in the image

It's a compatibility hack (because implementations were initially
shipping without EXIF support, and there may be a dependency on
that), but once the developer has opted in, everything should really
act like the rotation is part of the image format.


𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                          https://www.mozilla.org/   𝄂
             Before I built a wall I'd ask to know
             What I was walling in or walling out,
             And to whom I was like to give offense.
               - Robert Frost, Mending Wall (1914)
Received on Tuesday, 10 March 2015 17:09:48 UTC

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