[Scummvm-tracker] [ScummVM :: Bugs] #12532: Mouse Cursor Snaps to Top Left Corner on Android 8.1.0 Device

ScummVM :: Bugs trac at scummvm.org
Tue May 11 13:48:33 UTC 2021


#12532: Mouse Cursor Snaps to Top Left Corner on Android 8.1.0 Device
-------------------------------------------------+-------------------------
Reporter:  Zeimyth                               |       Owner:  (none)
    Type:  defect                                |      Status:  new
Priority:  normal                                |   Component:  Port:
                                                 |  Android
 Version:                                        |  Resolution:
Keywords:  android touch mouse cursor snap top   |        Game:
  left                                           |
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Comment (by antoniou79):

 I haven't had this issue on my devices or on the Android emulation.
 I'll make a note to look again into the code for touch gestures and see if
 cursor co-ordinates are not set/maintained properly.

 A cursor "jumping" issue could occur for multi-touch gestures because the
 co-ordinates of the first finger were kept -- this is a known issue that I
 thought I fixed, but it can still occur in certain edge cases. Not
 snapping to top left corner though.

 Could it be that the issue is a side-effect from another third party app
 on your phone or perhaps a touch screen (faulty) hardware issue?

 Or a result from rogue dust/dirt on the screen?

 There are options way to enable a visual indication of touch gestures in
 the Android Developer settings (For my phone those are: Show taps (show
 visual feedback for taps), Show Pointer location (show touch co-
 ordinates)).
 https://medium.theuxblog.com/enabling-show-touches-in-android-screen-
 recordings-for-user-research-cc968563fcb9

 There are also apps on the Play Store that could possibly provide some
 info on the issue -- if it's unrelated to ScummVM. Examples:

 Touch Screen Test:
 https://play.google.com/store/apps/details?id=jp.rallwell.siriuth.touchscreentest&hl=en_US&gl=US
 Touchscreen Calibration:
 https://play.google.com/store/apps/details?id=redpi.apps.touchscreencalibration

 Could you test with the Developer option setting for visual feedback
 and/or the Android apps to see if we can get a better idea of what is
 happening?
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/12532#comment:2>
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