- From: Liam R E Quin <liam@w3.org>
- Date: Tue, 15 Apr 2014 15:08:46 -0400
- To: Boris Zbarsky <bzbarsky@MIT.EDU>
- Cc: www-style list <www-style@w3.org>
On Tue, 2014-04-15 at 14:28 -0400, Boris Zbarsky wrote: > On 4/15/14 2:13 PM, Liam R E Quin wrote: > > Wouldn't a good way for Web apps be to have a JavaScript interface to > > EXIF metadata? > > That's not enough, unfortunately, because there is no way to specify a > rotation for just a background Good point. > and if you process the JPEG image to > produce a rotated image (e.g. by painting to a canvas, getImageData, > etc) you end up with some quality loss during the reencode. One can rotate a jpeg image losslessly if it's a multiple of 8 pixels wide; otherwise, there will be the same losses regardless. > And if you > don't reencode you pay a pretty hefty memory price for keeping the > decompressed data in memory... Naah, a 40 megapixel node is just like a couple of DOM nodes :-) So, really what I'm hearing is you need a way to tell the browser rotate/transform a background image, and a way to find out from the image metadata if that's needed, right? -- Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ Pictures from old books: http://fromoldbooks.org/ Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
Received on Tuesday, 15 April 2014 19:08:49 UTC