On Thu, 24 May 2012 11:35:35 +0200, Markus Ernst <[email protected]> wrote:
Am 24.05.2012 11:13 schrieb Matthew Wilcox:
I agree, the problem is that... it's still a problem. It's not always
a cropped version, it's sometimes a different image entirely - but we
can only sense the viewport rather than the space into which an image
is sitting. Because we can only sense the viewport we are actually
hooking into the design itself rather than being able to automate
things based on "how much room is there for this image?". However it's
cut, future maintenance is going to be a problem.
- New designs usually require other image dimensions, meaning that
images
have to be recreated anyway.
That's true, but the problem isn't so much that as it is that there
will be different breakpoints. It's unlikely we'd be working with the
same breakpoints, so the one's in the mark-up are all wrong. Leading
to incorrect image selection. It's not trivial to revisit all mark-up
to correct this.
Once CSS variables are available, would it be possible to reference them
from the @media attribute? Given a variable "breakpoint1" is defined in
the CSS file:
<source media="(min-width:var(breakpoint1))" srcset="tall.jpg 1x,
tall2.jpg 2x">
CSS variables as proposed can't work like that, as they rely on the
cascade.
- Florian
