[Interest] How to render small Images decently on non retina displays with QtQuick?

[Nikolai Tasev]

On 3/15/2018 4:26 PM, Shawn Rutledge wrote:
> In the future I think it will make sense to use PDF for vector icons 
> too (in color, even). (Some frameworks already can do this.) Then 
> instead of an icon font, you could have one PDF file with all the 
> icons for your app, one icon per “page”. I hope to eventually support 
> using a PDF file with an ordinary Image in QML, but we have to add API 
> for selecting the page, and there are other issues with caching and so 
> on. I had patches to get it mostly working a couple of years ago, it 
> just wasn’t 100% ready for integration.

The PDF format specification is even more complex than the SVG one аs it 
is used also to control printing output. The good PDF RIPs are all 
proprietary. I had quite a lot difficulties using Ghostscript and 
Poppler until I switched to  a library with a paid license. So it will 
be again limited to a subset of the specification and maybe slow.