[whatwg] Supporting scanners on the web

Robert O'Callahan robert at ocallahan.org
Thu Sep 26 22:45:15 PDT 2013


On Fri, Sep 27, 2013 at 5:29 PM, Jonas Sicking <jonas at sicking.cc> wrote:

> The most requested ability is to resize images to a particular
> resolution. This is something that can be done using canvas, but not
> for videos or animated images. And currently you can't do it off the
> main thread, which is an issue for larger images.
>

You can actually. You can draw the image to an offscreen <canvas>, scaling
it, and then call toBlob() on the canvas, which is async. Nothing forces
the image drawing and scaling part of that process to be sync.

Rob
-- 
Jtehsauts  tshaei dS,o n" Wohfy  Mdaon  yhoaus  eanuttehrotraiitny  eovni
le atrhtohu gthot sf oirng iyvoeu rs ihnesa.r"t sS?o  Whhei csha iids  teoa
stiheer :p atroa lsyazye,d  'mYaonu,r  "sGients  uapr,e  tfaokreg iyvoeunr,
'm aotr  atnod  sgaoy ,h o'mGee.t"  uTph eann dt hwea lmka'n?  gBoutt  uIp
waanndt  wyeonut  thoo mken.o w  *
*



More information about the whatwg mailing list