[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel van Vugt]

** Changed in: mir
   Status: Fix Committed => Fix Released

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Title:
  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Pat McGowan]

** Changed in: canonical-devices-system-image
   Status: Fix Committed => Fix Released

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Launchpad Bug Tracker]

** Branch linked: lp:~ci-train-bot/mir/mir-ubuntu-xenial-landing-049

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Launchpad Bug Tracker]

** Branch linked: lp:~ci-train-bot/mir/mir-ubuntu-xenial-landing-012

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel van Vugt]

** Branch unlinked: lp:~ci-train-bot/mir/mir-ubuntu-xenial-landing-012

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[kevin gunn]

** Changed in: mir/0.18
   Status: Fix Committed => Fix Released

** Changed in: mir
   Status: Fix Committed => Fix Released

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel van Vugt]

** Changed in: mir
   Status: Fix Released => Fix Committed

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Launchpad Bug Tracker]

This bug was fixed in the package mir - 0.18.1+16.04.20160115-0ubuntu1

---
mir (0.18.1+16.04.20160115-0ubuntu1) xenial; urgency=medium

  [ Andreas Pokorny ]
  * New upstream release 0.18.1 (https://launchpad.net/mir/+milestone/0.18.1)
- No ABI changes. Bug fix release only.
- Bug fixed:
  . [regression] pinch to zoom not working reliably (LP: #1531517)


  [ CI Train Bot ]
  * No-change rebuild.

 -- kevin gunn   Fri, 15 Jan 2016 11:45:05
+

** Changed in: mir (Ubuntu)
   Status: In Progress => Fix Released

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Jean-Baptiste Lallement]

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

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel van Vugt]

** Changed in: mir/0.18
   Status: In Progress => Fix Committed

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[PS Jenkins bot]

Fix committed into lp:mir at revision None, scheduled for release in
mir, milestone 0.19.0

** Changed in: mir
   Status: In Progress => Fix Committed

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Andreas Pokorny]

Ah yes the android input transport is biting us again. We are still
bound to the limitation of that encoding. That encoding means - only one
down/up touch id per event. No matter what libinput reads or qtmir
sanitizes.. , as long as the transport from server to nested server or
from nested server to client chops of the information of every
additional down or up the gesture will break. I will keep the fix close
to the encoding so we can get rid of it easier...

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Title:
  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[kevin gunn]

** Changed in: mir/0.18
   Status: Confirmed => In Progress

** Changed in: mir
   Status: Confirmed => In Progress

** Changed in: mir (Ubuntu)
   Status: Confirmed => In Progress

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Launchpad Bug Tracker]

** Branch linked: lp:~andreas-pokorny/mir/fix-1531517

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Jean-Baptiste Lallement]

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

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Launchpad Bug Tracker]

** Branch linked: lp:~andreas-pokorny/mir/fix-1531517-0.18

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  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[kevin gunn]

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

** Changed in: mir
   Importance: High => Critical

** Changed in: mir/0.18
   Importance: High => Critical

** Changed in: mir (Ubuntu)
   Importance: High => Critical

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  [regression] pinch to zoom not working reliably

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Re: [Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel d'Andrada]

On 12/01/2016 05:39, Daniel van Vugt wrote:
> 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.
>

If you read my message carefully you will see that Mir is not even doing 
that (two fingers down on the same event). It was qtmir that was mending 
the event stream to do so. Mir was completely missing the down event for 
the first touch. So all of the blue you got a "touch 1 move + touch 2 
down" (no touch 1 down beforehand).

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[Daniel van Vugt]

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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Title:
  [regression] pinch to zoom not working reliably

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[Bug 1531517] Re: [regression] pinch to zoom not working reliably

[kevin gunn]

** Changed in: mir
 Assignee: (unassigned) => Andreas Pokorny (andreas-pokorny)

** Changed in: mir/0.18
 Assignee: (unassigned) => Andreas Pokorny (andreas-pokorny)

** Changed in: mir (Ubuntu)
 Assignee: (unassigned) => Andreas Pokorny (andreas-pokorny)

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  [regression] pinch to zoom not working reliably

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