On Tuesday, May 20, 2014 14:55:16 David Edmundson wrote: > On Tue, May 20, 2014 at 2:28 PM, Teo Mrnjavac <t...@kde.org> wrote: > > Hello, > > > > I've had a chat with Morten Johan Sørvig, the person behind the high DPI > > effort in Qt. What follows is a status report. > > > > The work on high DPI support that's already merged is focused on OS X and > > iOS, but it's mostly cross-platform code. There's also some unmerged work > > on other platforms. > > The X11 implementation of the scaling feature would rely on an environment > > variable QT_HIGHDPI_SCALE_FACTOR, leaving it to the workspace to set this > > value to something sensible (also described in [1]). > > That means it's fixed as one global scale factor instead of one per screen. > Given the API is all there that's a bit rubbish.
The QT_HIGHDPI_SCALE_FACTOR could also be per-screen, we can arrange that, but it makes our heuristics and/or settings more complicated. I'm guessing we'd have to at least move the DPI override setting from the Fonts KCM to KScreen. > > I'm not sure how else one could do it in a X-platform way. Maybe this > is worth a talk with Gnome, Ubuntu and whoever else pretty soon. It seems like Xorg people don't even want to talk about this, judging from those bug reports I linked earlier. Based on a quick search and skim through [1], Gnome 3 seems to go the X way, i.e. hardcoding 96ppi and using its own scaling factor set in dconf (org.gnome.desktop.interface text-scaling-factor). I don't know if they have heuristics to try to come up with that number automatically. Ubuntu/Unity, no clue. Sure, we can try to talk to people. > > > Another important issue is that currently the only tested and nicely > > working values for QT_HIGHDPI_SCALE_FACTOR are 1.0 and 2.0, i.e. Mac OS > > style scaling. > I can't imagine it being too big a problem; things only look bad once > they're past a certain point. > > > produce decent results and minimize glitches, but the only way to be sure > > of that is trying it out. I'll try to give his branch a spin when I get > > the chance. > > Please do, and report back. Will do. [1] https://bugzilla.gnome.org/show_bug.cgi?id=643704 Cheers, -- Teo Mrnjavac http://teom.org | t...@kde.org _______________________________________________ Plasma-devel mailing list Plasma-devel@kde.org https://mail.kde.org/mailman/listinfo/plasma-devel
