On Tue, Nov 12, 2013 at 6:54 PM, Adam Barth <[email protected]> wrote:
> On Tue, Nov 12, 2013 at 10:45 AM, John Mellor <[email protected]> wrote: > > - Doesn't address viewport-switching (variable-sized images), though we > may > > be able to fix that by extending image-set to support src-N's > > <viewport-urls> syntax. > > Why doesn't it support variable-sized images? In example above, one > of the cases is 30x30 and the other is 60x60. Maybe I've > misunderstood what you mean by variable-sized images? In most responsive designs, there are images whose resolution depends on both the viewport width and the devicePixelRatio. Your approach technically allows handling both, by combining max-width and max-resolution MQs, but if you have 6 widths and 4 dprs, you have to write 24 separate MQs, for every combination. This is the same problem srcset's "w" unit had; see xanthir.com/b4Su0 for a clear explanation, and compare the extreme verbosity (and incomprehensibility) of the srcset example there, with the much simpler equivalent src-1.
