Two-finger scrolling not working with Samsung trackpad (keyboard cover)

[gujjwal00]

Greetings @gujjwal00 . Once again, thank you very much for your commitment to the community. I did the test with the samsung trackpad (keyboard cover). Single click and double click working perfectly. The movement too.

Mistake I cannot scroll to move up or down a content.

What happens? When you try to scroll with two fingers on the trackpad, what happens is a navigation through the elements of the screen without the pointer moving.

https://user-images.githubusercontent.com/51301335/147293565-f4bed359-868f-4a05-baae-055cb2cf8549.mp4

Originally posted by @zequinh4 in https://github.com/gujjwal00/avnc/issues/5#issuecomment-1000534505

[gujjwal00]

I am attaching a test app here which can record touch events received from Android. Can you please run this, perform some gestures with touchpad, and post the logs here?

touch-tester.zip

[zequinh4]

Hi @gujjwal00 . Hope I managed to do it the right way hihihi. Merry Christmas and thank you again!

Logs.txt

[zequinh4]

@gujjwal00 Another test.

Logs2.txt

[gujjwal00]

Thanks for the logs @zequinh4 , and Merry Christmas to you too 🎅.

I have some questions:

• What actions have you configured for 1 Finger Swipe & 2 Finger Swipe gestures in settings?
• Have you enabled the Hide Remote Cursor server option?
• Are you using the APK I posted in #5 ?

[zequinh4]

Hello again my friend @gujjwal00 :santa:

• Quais ações você configurou para 1 Finger Swipe& 2 Finger Swipegestos nas configurações? Yes, I set it up like the image below.
• Você habilitou a Hide Remote Cursoropção do servidor? Yes, I hid the cursor because there is always a delay.
• Você está usando o APK que postei no modo [Adicionar Mouse Trackpad e gesticular como o laptop ] I'm using this apk (app-test.zip) that you made available! --> (https://github.com/gujjwal00/avnc/issues/5) nº 5 ?

[gujjwal00]

Thank you.

So what's happening here is that 2-finger swipe is being treated as 1-finger swipe, to which you have assigned Move Pointer action. So the remote pointer is being moved, but as you have hidden it, its not visible.

Unfortunately, this is out of my control. If you look at the logs:

GestureStart: Swipe
...
OT: MotionEvent { action=ACTION_DOWN, actionButton=0, id[0]=0, x[0]=591.27625, y[0]=306.92072, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x10000002, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=368685017, downTime=368685017, deviceId=181, source=0x3002, displayId=0 }
OT: MotionEvent { action=ACTION_MOVE, actionButton=0, id[0]=0, x[0]=584.3911, y[0]=306.92072, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x10000002, edgeFlags=0x0, pointerCount=1, historySize=1, eventTime=368685033, downTime=368685017, deviceId=181, source=0x3002, displayId=0 }

GestureStart: 2-finger Scroll
...
OT: MotionEvent { action=ACTION_DOWN, actionButton=0, id[0]=0, x[0]=869.8763, y[0]=309.9757, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x10000002, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=368698215, downTime=368698215, deviceId=181, source=0x3002, displayId=0 }
OT: MotionEvent { action=ACTION_MOVE, actionButton=0, id[0]=0, x[0]=869.99115, y[0]=293.48785, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x10000002, edgeFlags=0x0, pointerCount=1, historySize=2, eventTime=368698232, downTime=368698215, deviceId=181, source=0x3002, displayId=0 }

you will notice that both of these gestures are generating similar events, and pointerCount is 1 in both cases. Hence, AVNC is unable to differentiate between two gestures.

This is a known issue with how this device generates touchpad events, and if you read through #9 , you will notice some other issues.

If you want, you can set the action for '1-Finger Swipe' to Scroll Remote Content.

[zequinh4]

@gujjwal00 Interestingly putting "1 finger swipe" as scroll and keeping "2 finger swipe" as scroll is working perfectly. The other functions are still working perfectly! Thank you my friend! I'm looking forward to releasing this update on F-Droid!

https://user-images.githubusercontent.com/51301335/147368493-59658d67-04b9-4b85-8c46-b95ab7bb3336.mp4

[zequinh4]

@gujjwal00
I suggest the implementation of a switch in the "input" menu so that this configuration automatically occurs for the Samsung Bookcover Keyboard. Ex: "Samsung Bookcover Keyboard". It would easily solve this compatibility issue! Hugs!

[gujjwal00]

You don't have to wait for F-Droid update. Current version there already supports setting scroll on 1-finger swipe.

Automatic setting change via hardware detection is out of scope, for now at least.