Pointer icon refactor for touchpad

With PointerChoreographer enabled, touchpads work similar to mice,
using MousePointerController of the associated display.
For some gestures like scroll or multi-finger swipes,
TouchpadInputMapper sets fake finger coordinates and
PointerChoreographer combines cursor position with them.

Test: atest inputflinger_tests
Bug: 293587049
Change-Id: I0f6588c79004284df98d99351ea3c3e64b636a74
diff --git a/services/inputflinger/PointerChoreographer.h b/services/inputflinger/PointerChoreographer.h
index 26d2fef..90a0d3f 100644
--- a/services/inputflinger/PointerChoreographer.h
+++ b/services/inputflinger/PointerChoreographer.h
@@ -95,10 +95,13 @@
     void notifyPointerDisplayIdChangedLocked() REQUIRES(mLock);
     const DisplayViewport* findViewportByIdLocked(int32_t displayId) const REQUIRES(mLock);
     int32_t getTargetMouseDisplayLocked(int32_t associatedDisplayId) const REQUIRES(mLock);
+    std::pair<int32_t, PointerControllerInterface&> getDisplayIdAndMouseControllerLocked(
+            int32_t associatedDisplayId) REQUIRES(mLock);
     InputDeviceInfo* findInputDeviceLocked(DeviceId deviceId) REQUIRES(mLock);
 
     NotifyMotionArgs processMotion(const NotifyMotionArgs& args);
     NotifyMotionArgs processMouseEventLocked(const NotifyMotionArgs& args) REQUIRES(mLock);
+    NotifyMotionArgs processTouchpadEventLocked(const NotifyMotionArgs& args) REQUIRES(mLock);
     void processTouchscreenAndStylusEventLocked(const NotifyMotionArgs& args) REQUIRES(mLock);
     void processStylusHoverEventLocked(const NotifyMotionArgs& args) REQUIRES(mLock);
     void processDeviceReset(const NotifyDeviceResetArgs& args);