Hello.
I am new to NXP, the i.MX family, Qt5, and touchscreens. Please bear with me
Executive Summary: we are porting a fairly mature Qt5 application from Android to (Yocto) Linux on the i.MX 8M PLUS. The Android touchscreen solution works fine with regard to Qt::PanGesture events and Qt::PinchGesture events. The Linux touchscreen solution works fine with regard to Qt::PanGesture events but not with Qt::PinchGesture events. The only Linux solution gesture events we are receiving are for Qt::PanGesture events, even when using a two-finger pinch gesture.
Some Details:
* wayland 1.19.0
* weston
* Yotco Hardknott
* Qt5 5.15.2
We have set the C++ class (of interest):
grabGesture(Qt::GestureType::PinchGesture);
grabGesture(Qt::GestureType::PanGesture);
In case this looks familiar to any reader, another dev found it necessary to set the QT_PAN_TOUCHPOINTS QT envvar in the C++ main function in order to receive gesture events with the Android implementation:
qputenv("QT_PAN_TOUCHPOINTS", "1");
We definitely need this for the Linux implementation as well: without it, we receive only mouse events rather than gesture events.
Any ideas about our problematic build and/or configuration issue?
Thank you for your time. Let me know if additional details are required.
Meanwhile, I intend to compile and link an open-source Qt5 touchscreen gesture demo as a sanity-check.
Arlis
