touch-packages team mailing list archive

[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

dandrader:
It's been a useful quirk of Android input until now that multi-touch gestures get separate events for each finger, but I think we all need to ensure our client code does not assume that's always true.

It wasn't a design choice of Mir's, but just something we inherited from
Android. There's a good argument that Mir's semantics should not change,
because it annoys people obviously. On the other hand it would be
difficult to keep all the quirks of Android input in the transition to
libinput. And I think the semantics of receiving a single event where
two fingers go down at once is perfectly valid. We should all be writing
client code that expects that might happen.

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1531517

Title:
  [regression] pinch to zoom not working reliably

Status in Canonical System Image:
  Confirmed
Status in Mir:
  Confirmed
Status in Mir 0.18 series:
  Confirmed
Status in mir package in Ubuntu:
  Confirmed
Status in qtmir package in Ubuntu:
  Won't Fix

Bug description:
  in the last few days (using rc-proposed 221 on krillin) pinch to zoom
  gestures do not work reliably anymore.

  Appears to be system wide as there have been reports in the follow
  apps that all use PinchArea from QML:

  - Camera: pinch to zoom in viewfinder stops working, pinch to zoom in Photo Roll to zoom a photo stops working
  - Gallery: open a photo and pinch to zoom doesn't work
  - Webbrowser: pinch to zoom on a web page not working

  Could be mir/qtmir related

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