touch-packages team mailing list archive

[Bill Filler <1504293@xxxxxxxxxxxxxxxxxx>]

@kgunn, grayback,
can we get a landing on this - looks like MR has been approved already
we need this fix for a browser bug we have

** Also affects: qtubuntu (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: canonical-devices-system-image
   Importance: Undecided
       Status: New

** Changed in: canonical-devices-system-image
     Assignee: (unassigned) => kevin gunn (kgunn72)

** Changed in: canonical-devices-system-image
    Milestone: None => ww46-2015

** Changed in: canonical-devices-system-image
   Importance: Undecided => High

** Changed in: canonical-devices-system-image
       Status: New => In Progress

** Changed in: qtubuntu (Ubuntu)
     Assignee: (unassigned) => kevin gunn (kgunn72)

** Changed in: qtubuntu (Ubuntu)
   Importance: Undecided => High

** Changed in: qtubuntu (Ubuntu)
       Status: New => In Progress

** Changed in: qtubuntu (Ubuntu)
     Assignee: kevin gunn (kgunn72) => Gerry Boland (gerboland)

-- 
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/1504293

Title:
  Screen.pixelDensity is incorrect on all devices

Status in Canonical System Image:
  In Progress
Status in qtubuntu:
  In Progress
Status in qtubuntu package in Ubuntu:
  In Progress

Bug description:
  I’m testing the Screen.pixelDensity attached property
  (http://doc.qt.io/qt-5/qml-qtquick-window-screen.html#pixelDensity-
  attached-prop) in a QML app on various devices (krillin, arale, flo),
  and the screen always reports the same incorrect value: 3.93701 px/mm.

  I had a quick look at how this is implemented in QtQuick, and it calls
  into QScreen::physicalDotsPerInch(), which itself calls into
  QPlatformScreen::physicalSize(), which doesn’t appear to be
  reimplemented in QtUbuntu (UbuntuScreen).

  For reference, I want to use that property to calculate the physical
  size of the screen, as a heuristic to determine the most suitable form
  factor.

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