request Gravatar images in required size

[Robert Jäschke]

On /bibtex pages, the user's profile image is shown in a square with an edge length of 64px. However, the image we request from Gravatar is of size 128px (the URL is something like http://www.gravatar.com/avatar/HASH.jpg?d=mm&s=128). Since on the CV page we need the other size, it would make sense to allow a parameter for http://www.bibsonomy.org/picture/user/USER which allows to select the size. For Gravatar images, we can then just pass-through the requested size. For local images, however, we would need to compute and/or store the image in the other size. The solution for that problem needs some discussion.

[Former user]

Why don't we use the CSS style width attribute of the image?

[Thomas Niebler]

Because the Gravatar resizing actually returns a resized image, the CSS width attribute only tells the browser to show the same image in a smaller form, but you still need to transfer the whole image. This is basically a bandwith issue, as I see it.

[Daniel Zoller]

I would recalculate all existing pictures to the new size and store new uploaded images in the two required sizes, because scaling images on-the-fly may take too long.

[Thomas Niebler]

@tcunis Please find out which picture sizes are needed and adapt the PictureUploadController and all other classes accordingly.

[Former user]

fixed issue #1940 (v0.9).

→ <<cset 0e8f5a2bc76e>>

[Former user]

this implementation currently supports 66px (Post), 100px (CV), ad 200px (Default). The call is

#!
/picture/user/USER?size=SIZE

where SIZE may be either the size in pixel (either w/ or w/o 'px') or 'cv', 'post', or 'default' (case doesn't matter). I.e.:

#!
/picture/user/USER?size=100
/picture/user/USER?size=200px
/picture/user/USER?size=POST