Implement 0.5s palm rejection

acidanthera · Apr 18, 2019 · b99c3d3 · b99c3d3 · zzzhuzhang · Apr 5, 2020
1 parent 28a90da
commit b99c3d3
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp b/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp
@@ -926,6 +926,11 @@ void ApplePS2SynapticsTouchPad::assignVirtualFinger(int physicalFinger) {
 
 void ApplePS2SynapticsTouchPad::synaptics_parse_hw_state(const UInt8 buf[])
 {
+
+    // Check if input is disabled via ApplePS2Keyboard request
+    if (ignoreall)
+        return;
+
     int w = (((buf[0] & 0x30) >> 2) |
              ((buf[0] & 0x04) >> 1) |
              ((buf[3] & 0x04) >> 2));
@@ -1226,8 +1231,14 @@ void ApplePS2SynapticsTouchPad::sendTouchData() {
 
     DEBUG_LOG("synaptics_parse_hw_state lastFingerCount=%d clampedFingerCount=%d", lastFingerCount,  clampedFingerCount);
 
+    // Ignore input for specified time after keyboard usage
     AbsoluteTime timestamp;
     clock_get_uptime(&timestamp);
+    uint64_t timestamp_ns;
+    absolutetime_to_nanoseconds(timestamp, &timestamp_ns);
+
+    if (timestamp_ns - keytime < maxaftertyping)
+        return;
 
     int transducers_count = 0;
     for(int i = 0; i < SYNAPTICS_MAX_FINGERS; i++) {