Rename

app/src/main/java/io/legato/kazusa/utils/RecyclerViewExtensions.kt

@@ -0,0 +1,30 @@
+package io.legato.kazusa.utils
+
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+
+fun RecyclerView.findCenterViewPosition(): Int {
+    return getChildAdapterPosition(
+        findChildViewUnder(width / 2f, height / 2f) ?: return RecyclerView.NO_POSITION
+    )
+}
+
+fun RecyclerView.findViewPosition(x: Float, y: Float): Int {
+    return getChildAdapterPosition(findChildViewUnder(x, y) ?: return RecyclerView.NO_POSITION)
+}
+
+fun RecyclerView.findFirstVisibleViewPosition(): Int {
+    var pos = -1
+    if (layoutManager is LinearLayoutManager) {
+        pos = (layoutManager as LinearLayoutManager).findFirstVisibleItemPosition()
+    }
+    return pos
+}
+
+fun RecyclerView.findLastVisibleViewPosition(): Int {
+    var pos = -1
+    if (layoutManager is LinearLayoutManager) {
+        pos = (layoutManager as LinearLayoutManager).findLastVisibleItemPosition()
+    }
+    return pos
+}