[Phone] Kinetic scrolling is broken on the spread

[Loïc Molinari]

On the phone, kinetic scrolling is broken in spread mode. The rendering is stopped as soon as the touch is released.

[Gerry Boland (gerboland)]

On today's image, using:
initctl set-env --global QT_LOGGING_RULES="qtmir.mir.*=true"
for a flick which should behave kinetically, but instead halts immediately, qtmir prints:

qtmir.mir.input: Received MirTouchEvent((id=62,action=down,x=342.366,y=519.459))
qtmir.mir.input: Sending to Qt (id=62,state=pressed,normalPosition=(0.634011,0.541103))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=340.869,y=517.96))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.631238,0.539542))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=332.384,y=518.46))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.615527,0.540062))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=304.382,y=516.459))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.563671,0.537978))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=278.375,y=516.462))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.515509,0.537981))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=257.668,y=519.076))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.477163,0.540704))
qtmir.mir.input: Received MirTouchEvent((id=62,action=change,x=239.161,y=519.893))
qtmir.mir.input: Sending to Qt (id=62,state=moved,normalPosition=(0.442891,0.541556))
qtmir.mir.input: Received MirTouchEvent((id=62,action=up,x=239.161,y=519.893))
qtmir.mir.input: Sending to Qt (id=62,state=released,normalPosition=(0.442891,0.541556))

[Gerry Boland (gerboland)]

Older image with correct kinetic scrolling:

qtmir.mir.input: Received MirTouchInputEvent((id=25,action=down,x=590.116,y=759.203))
qtmir.mir.input: Sending to Qt (id=25,state=pressed,normalPosition=(0.76838,0.593128))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=590.116,y=760.703))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.76838,0.594299))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=587.368,y=762.202))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.764802,0.595471))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=580.918,y=765.553))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.756403,0.598088))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=574.876,y=768.2))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.748536,0.600156))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=563.419,y=772.185))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.733619,0.60327))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=change,x=556.649,y=774.337))
qtmir.mir.input: Sending to Qt (id=25,state=moved,normalPosition=(0.724804,0.604951))
qtmir.mir.input: Received MirTouchInputEvent((id=25,action=up,x=556.649,y=774.337))
qtmir.mir.input: Sending to Qt (id=25,state=released,normalPosition=(0.724804,0.604951))

[Gerry Boland (gerboland)]

nothing looks wrong coming in from mir anyway

[Andrew Hayzen (ahayzen)]

I see this issue in multiple places, so far I have observed it in the:
- app spread
- indicators (vertical - scrolling up/down WiFi)
- indicators (horizontal - scrolling the icons at the top)
- possibly in the launcher

$ system-image-cli -i
current build number: 146
device name: mako
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2015-10-28 12:49:32
version version: 146
version ubuntu: 20151028
version device: 20150911
version custom: mako-1.1

[Gerry Boland (gerboland)]

@ahayzen - well observed. Any scrollable list was broken