feat: add basic support for stylus (no buttons), related to #14

Author: lazd

VoodooI2CGoodix.xcodeproj/xcuserdata/lazd.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -7,7 +7,7 @@
 		<key>VoodooI2CGoodix.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>4</integer>
+			<integer>5</integer>
 		</dict>
 	</dict>
 </dict>

VoodooI2CGoodix/VoodooI2CGoodixEventDriver.cpp

@@ -78,6 +78,18 @@ void VoodooI2CGoodixEventDriver::fingerLift() {
 void VoodooI2CGoodixEventDriver::handleSingletouchInteraction(Touch touch) {
     int logicalX = touch.x;
     int logicalY = touch.y;
+    int width = touch.width;
+
+    if (width == 0) {
+        #ifdef GOODIX_EVENT_DRIVER_DEBUG
+        IOLog("%s::Stylus hovering at %d, %d \n", getName(), logicalX, logicalY);
+        #endif
+
+        // Stylus hovers come with a 0 width, so don't bother with any of our routines
+        dispatchDigitizerEvent(logicalX, logicalY, HOVER);
+
+        return;
+    }
 
     UInt64 nanoseconds = getNanoseconds();
 

VoodooI2CGoodix/VoodooI2CGoodixTouchDriver.cpp

@@ -374,6 +374,7 @@ void VoodooI2CGoodixTouchDriver::stop(IOService* provider) {
 }
 
 IOReturn VoodooI2CGoodixTouchDriver::setPowerState(unsigned long powerState, IOService* whatDevice) {
+    #ifndef GOODIX_EVENT_DRIVER_DEBUG
     if (powerState == 0) {
         if (awake) {
             awake = false;
@@ -390,6 +391,7 @@ IOReturn VoodooI2CGoodixTouchDriver::setPowerState(unsigned long powerState, IOS
             IOLog("%s::Waking up\n", getName());
         }
     }
+    #endif
 
     return kIOPMAckImplied;
 }