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Some mouse events with "easy-move" key pressed are passed through to GTK3 apps


Description haarp 2016-06-14 16:20:17 CEST

- Enable compositor and Xfwm's "zoom" function
- Hover pointer over GTK3 app
- Hold easy-move key and use mousewheel

-> Xfwm will zoom, but the app will scroll simultaneously. GTK2 applications do not appear to receive the mouse wheel events, but GTK3 ones do.

I suspect this is related to GTK3's new scrolling functionality (smooth scrolling and all that).
Comment 1 Olivier Fourdan editbugs 2016-06-14 16:39:11 CEST
It's because gtk+ 3.x uses XI2 events directly and those are not "stopped" by the old style grab xfwm4 uses.

"XI1 grabs are different to XI2 grab and a device may not be grabbed through an
XI2 grab if an XI1 grab is currently active on this device or vice versa."

See Peter's write ups on XI2 events here: http://who-t.blogspot.fr/2009/05/xi2-recipes-part-1.html
Comment 2 Git Bot editbugs 2020-05-29 12:11:17 CEST
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Bug #12650

Reported by:
Reported on: 2016-06-14
Last modified on: 2020-05-29


Olivier Fourdan
CC List:
1 user




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