On Tue, Apr 22, 2014 at 11:05 AM, Michał Sawicz <michal.saw...@canonical.com> wrote: > On 22.04.2014 15:54, Rodney Dawes wrote: >> What about automatically running pngcrush on all uploaded PNGs? In some >> cases, this might reduce the image size quite a bit. Do we support SVG >> as a format for the icon on the server? An SVG compressed with gzip -9, >> with the file extension of .svgz should be loadable by Qt already, and >> should be a very significant reduction in file size of the image. >> Supporting and encouraging the SVG path is probably something we should >> do anyway. > > Even when you do SVG, you often want to reduce detail on lower > resolution screens, so even with vectors we need to support multiple > (even if less variations) sizes. > > What's more, we should check, but my feeling is that rendering an SVG is > more costly than loading a PNG. Not something we should disregard - > maybe the cache could cache the rendered bitmap. Unfortunately then Qt > doesn't render all SVGs correctly, two examples being the web browser > and gallery icons, which you can actually see in the image currently. > Work on this would be needed if we wanted Qt to render them.
There's some recent GPU acceleration of SVG rendering in Chrome, but I think we are far from using such a thing for our icons, so indeed rendering SVG will be more cpu costly than the simple deflate algorithm that PNG uses. But there's a bigger issue when rendering SVG, and that is the varying support of SVG extensions like filters effects in different renderers (eg the qt renderer and the browser renderer). A designer using, say, Illustrator would be surprised when the icon rendered on a device does not look "just right". I believe that's the reason why only raster files are used for the icons of every other major platform: http://www.visualpharm.com/articles/icon_sizes.html cheers, -- alecu -- Mailing list: https://launchpad.net/~ubuntu-appstore-developers Post to : ubuntu-appstore-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-appstore-developers More help : https://help.launchpad.net/ListHelp
