Keypad does not accept input from Wacom Intuos (12x18) + 'fix'

[rsnel]

Operating System: Debian GNU/Linux 10
CEmu version: v2.0dev (cee9c86)
Describe your issue:
Keypad does not accept input from Wacom Intuos (12x18). I expect to be able to use the table as I can use the mouse.

What are the steps to reproduce this issue?

1. Attempt to press keys using the graphics tablet

Any logs, error output, screenshot, other comments...?

If I remove the first 4 lines of the function

void KeypadWidget::mouseEvent(QMouseEvent *event) {

then the touchpad works as expected. However, I still wanted to report this, since those lines must have been there for a reason.

[adriweb]

I don't believe any of us has a graphics tablet to help debug this, it would be nice to know what the source() is for this.
Apparently it can be those values: https://doc.qt.io/qt-5/qt.html#MouseEventSource-enum

@jacobly0 added a check for a specific one so there must be a reason...?

[CollinScripter]

This occurs on other graphics tablets as well.
I have a Huion Inspiroy H640P which is ~40 USD and it doesn't work correctly either.

[rsnel]

I have recompiled the code with a printf() statement to determine the value of source() when using the tablet. The value is

Qt::MouseEventSynthesizedByQt 2

[adriweb]

Right, this corresponds to "synthesized from an unhandled touch event", hmmm...

[adriweb]

If someone is able to try the latest nightly release (since Qt6 may have already changed the behavior here), it would be nice.