https://bugs.kde.org/show_bug.cgi?id=379174
Dmitry Kazakov <dimul...@gmail.com> changed:
What |Removed |Added
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CC| |dimul...@gmail.com
--- Comment #14 from Dmitry Kazakov <dimul...@gmail.com> ---
Hi, Peter!
For both, art-pen stylus rotation and airbrush side-pressure switch we use
valuator with XCB atom "Abs Wheel".
# atoms we use
"Abs X\0"
"Abs Y\0"
"Abs Pressure\0"
"Abs Tilt X\0"
"Abs Tilt Y\0"
"Abs Wheel\0"
# code, that uses them:
int valuator = it.key();
TabletData::ValuatorClassInfo &classInfo(it.value());
xi2GetValuatorValueIfSet(event, classInfo.number, &classInfo.curVal);
double normalizedValue = (classInfo.curVal - classInfo.minVal) /
(classInfo.maxVal - classInfo.minVal);
switch (valuator) {
case QXcbAtom::AbsPressure:
pressure = normalizedValue;
break;
case QXcbAtom::AbsTiltX:
xTilt = classInfo.curVal;
break;
case QXcbAtom::AbsTiltY:
yTilt = classInfo.curVal;
break;
case QXcbAtom::AbsWheel:
switch (tabletData->tool) {
case QTabletEvent::Airbrush:
tangentialPressure = normalizedValue * 2.0 - 1.0; // Convert
0..1 range to -1..+1 range
break;
case QTabletEvent::RotationStylus:
rotation = normalizedValue * 360.0 - 180.0; // Convert 0..1
range to -180..+180 degrees
break;
default: // Other types of styli do not use this valuator
break;
}
break;
default:
break;
}
Basically, if wayland's XCB compatibility layer implements valuators with these
atoms, then Krita starts handling it
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