On Mon, 2018-03-05 at 15:05 +0100, Samuel Thibault wrote: > Hello, > > Emmanuele Bassi, on jeu. 01 mars 2018 20:27:04 +0000, wrote: > > I was not claiming that the Shell’s zoom is perfect; I’m saying > > that the Shell > > is where things need to be fixed, as it’s where things are > > implemented already. > > Well, that is for gnome. Users shouldn't be tied with gnome just to > get > good zoom of gtk applications, and we want good zoom of other widget > libraries too, so we need a window magnification interface which is > independent from gnome.
If you implement the feature in GTK+ and gnome-shell in a way that makes either of those replaceable, you can then add support for non- GTK+ apps, or non-gnome-shell compositors. I don't see how you could implement it without the compositor knowing about the feature. The compositor already knows how to modify what appears on the screen, can modify on-screen data quickly (for all the brightness, contrast, etc. changes), and using the GPU knows how to scale. > > The shell does not currently ask the toolkit to render an area at a > > different > > scaling factor, but it could. The shell can also change the > > rendering pipeline > > to apply an effect like color inversion. > > But that means it'll only benefit the gnome shell, and not other > desktops. Writing a *good* magnifier, which means not only just the > graphical effect, but also mouse tracking, focus tracking, smooth > transition, etc. is not something that we want to see having to be > implemented several times for several desktops, there are not enough > people who have the skills, context, and time to do that. Perhaps, but you'd be doing a disservice to your users trying to implement this as a "can run anywhere" solution. I don't think there's any way you can implement this generically so that there's no work needed on other desktops. Implementing this in GTK+ and gnome-shell gives you the opportunity to experiment with an interface that should hopefully be applicable to other compositors, and compositing window managers. _______________________________________________ gnome-accessibility-devel mailing list gnome-accessibility-devel@gnome.org https://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel
