Creating a filter fails if no matching devices are present

[Jussi Pakkanen]

Get code from here: https://code.launchpad.net/~jpakkane/+junk/geis-drag

Build and run, get this:

GEIS_DEBUG=2 ./geis-example
GEIS(warning)-_set_valist:566 back end not specified, defaulting to DBus
GEIS(warning)-_locator_message_handler:120 server not found!
Geis subscription activation failed.

This worked a few days ago with the exact same piece of code.

[Stephen M. Webb (bregma)]

The geis-example code no longer selects gestures on touchscreen devices when there is no touchscreen device present as a result of fixing #89173.

This is correct behaviour. You will find the test program works correctly on a system with a real or emulated touchscreen device.

[Jussi Pakkanen (jpakkane)]

If your subscription says "I don't want gestures from touch screen devices" it should succeed regardless of whether there are touch screen devices currently plugged in or not. Forcing the library user to do system instrospection for this is an unnecessary burden.

[Chase Douglas (chasedouglas)]

A parallel case is with event subscription from the X server. A client can subscribe to touch events even if there are no touch devices present. If a touch device is added, then the subscription is still valid and the client doesn't need to do anything to receive events from it. Requiring a client to watch device additions and removals and then update the gesture subscriptions would be annoying and racy.

[Chase Douglas (chasedouglas)]

Stephen, I have a feeling this has been fixed. Can you verify?

Thanks!

[Jussi Pakkanen (jpakkane)]

If there are no touch devices connected, the program errors out with "Failed direct touch filter term creation."

If there are connected devices it works, but only vertical drag motion is reported. I tried to find bugs in the sample app but didn't find any.

[Jussi Pakkanen (jpakkane)]

The second issue was due to my faulty X config, sorry. The filter issue still stands, though.

[Launchpad Janitor (janitor)]

This bug was fixed in the package utouch-geis - 2.2.8-0ubuntu1

---------------
utouch-geis (2.2.8-0ubuntu1) precise; urgency=low

  [ Chase Douglas ]
  * Build integration tests where dependencies are available
    - Will not build tests in archive, will build tests in Jenkins systems

  [ Stephen M. Webb ]
  * New upstream release.
    - fixes filter creation when no matching devices are present (lp: #904731)
    - fixes Unity crashes in geis_filter_delete() (lp: #936815)
    - fixes touch event delay during timeout wait (lp: #967605)
    - fixes handling device addition/removal (lp: #944822)
    - fixes tap timeouts (lp: #962705)
    - fixes position delta on touch count changes (lp: #967267)
    - fixes window ungrab on subscription deactivation (lp: #968736)
    - fixes geistest crash on startup (lp: #966595)
  * Bumped minimum required version of utouch-geis to 3.0.4 for licensing
    changes.
 -- <email address hidden> (Stephen M. Webb) Sat, 31 Mar 2012 13:13:34 -0400