** Package changed: ubuntu-ui-toolkit (Ubuntu) => ubuntu-ui-toolkit -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtubuntu in Ubuntu. https://bugs.launchpad.net/bugs/1275748
Title: Ubuntu QPA plugin does not override QScreen::devicePixelRatio Status in Ubuntu UI Toolkit: Confirmed Status in “qtubuntu” package in Ubuntu: Confirmed Bug description: In bug 1257721, I made Oxide DPI aware by passing an appropriate device pixel ratio to Chromium. However, the way this is implemented on Ubuntu is not really ideal. I expected to be able to read the DPR from QScreen::devicePixelRatio, but this is always 1.0f on Ubuntu regardless of the device scale. Instead, device pixel independence is implemented entirely in ubuntu-ui-toolkit by providing a QML component for converting between grid units and device pixels, based on an environment variable called "GRID_UNIT_PX". For now, I implemented a workaround in Oxide to also set the DPR to GRID_UNIT_PX / 8 when running with the Ubuntu platform plugin, and QScreen::devicePixelRatio on all other platforms. I think that qtubuntu should instead override QScreen::devicePixelRatio (that could still come from the same environment variable for now), and ubuntu-ui-toolkit should do the conversion from grid units to device pixels using this instead. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-ui-toolkit/+bug/1275748/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
