휠 반전 대체 이벤트를 줄 단위로 바꿔 원래 스크롤 속도 유지

픽셀 단위 대체 이벤트는 앱이 트랙패드처럼 처리해 한 칸당 이동 거리가 줄었다.
줄 단위로 만들고 원래 픽셀·소수점 이동량을 반전해 그대로 넣는다. 픽셀 이동량이
0인 휠 이벤트가 반전 없이 지나가던 문제도 고친다.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

razer-tilt.swift

@@ -170,14 +170,23 @@ let scrollCallback: CGEventTapCallBack = { proxy, type, event, _ in
         log("Scroll events: \(kind)")
         lastScrollKind = kind
     }
+    let lineY = event.getIntegerValueField(.scrollWheelEventDeltaAxis1)
     let pointY = event.getIntegerValueField(.scrollWheelEventPointDeltaAxis1)
-    guard isWheel, pointY != 0 else { return Unmanaged.passUnretained(event) }
+    let fixedY = event.getDoubleValueField(.scrollWheelEventFixedPtDeltaAxis1)
-    // Apps read the hardware data attached to the original event, so editing its delta
+    guard isWheel, lineY != 0 || pointY != 0 || fixedY != 0 else { return Unmanaged.passUnretained(event) }
-    // fields has no visible effect. Post a fresh event with the vertical delta flipped.
+    let lineX = event.getIntegerValueField(.scrollWheelEventDeltaAxis2)
     let pointX = event.getIntegerValueField(.scrollWheelEventPointDeltaAxis2)
-    guard let replacement = CGEvent(scrollWheelEvent2Source: nil, units: .pixel, wheelCount: 2,
+    let fixedX = event.getDoubleValueField(.scrollWheelEventFixedPtDeltaAxis2)
-                                    wheel1: Int32(clamping: -pointY), wheel2: Int32(clamping: pointX), wheel3: 0)
+    // Apps read the hardware data attached to the original event, so editing its delta
+    // fields has no visible effect. Post a fresh line-based event (like a real wheel, so
+    // apps keep their per-line scroll distance) carrying the original deltas, Y flipped.
+    guard let replacement = CGEvent(scrollWheelEvent2Source: nil, units: .line, wheelCount: 2,
+                                    wheel1: Int32(clamping: -lineY), wheel2: Int32(clamping: lineX), wheel3: 0)
     else { return Unmanaged.passUnretained(event) }
+    replacement.setIntegerValueField(.scrollWheelEventPointDeltaAxis1, value: -pointY)
+    replacement.setIntegerValueField(.scrollWheelEventPointDeltaAxis2, value: pointX)
+    replacement.setDoubleValueField(.scrollWheelEventFixedPtDeltaAxis1, value: -fixedY)
+    replacement.setDoubleValueField(.scrollWheelEventFixedPtDeltaAxis2, value: fixedX)
     replacement.location = event.location
     replacement.flags = event.flags
     replacement.setIntegerValueField(.eventSourceUserData, value: invertedScrollMarker)