add function to subtitle layer

android/oral-trainer-sdk/src/main/java/cn/learningpad/oraltrainer/sdk/OralTrainerPlayerView.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.util.AttributeSet
 import android.view.GestureDetector
 import android.view.MotionEvent
+import android.view.View
 import android.view.ViewConfiguration
 import android.widget.FrameLayout
 import androidx.media3.ui.PlayerView
@@ -123,6 +124,26 @@ class OralTrainerPlayerView @JvmOverloads constructor(
         verticalSwipeListener = listener
     }
 
+    /** Forwards touches from an overlay (for example a subtitle layer) as player gestures. */
+    fun forwardGestureFrom(source: View, event: MotionEvent): Boolean {
+        if (controller == null || !gestureControls.enabled) {
+            return false
+        }
+        val sourceLocation = IntArray(2).also(source::getLocationOnScreen)
+        val playerLocation = IntArray(2).also(::getLocationOnScreen)
+        val playerEvent = MotionEvent.obtain(event).apply {
+            offsetLocation(
+                (playerLocation[0] - sourceLocation[0]).toFloat(),
+                (playerLocation[1] - sourceLocation[1]).toFloat(),
+            )
+        }
+        return try {
+            handleLongPressSpeed(playerEvent) || gestureDetector.onTouchEvent(playerEvent)
+        } finally {
+            playerEvent.recycle()
+        }
+    }
+
     override fun onTouchEvent(event: MotionEvent): Boolean {
         return gestureDetector.onTouchEvent(event) || super.onTouchEvent(event)
     }