Add 50 dp buffer to isScrolledToBottom (#1228)

app/src/main/java/org/thoughtcrime/securesms/util/GeneralUtilities.kt

@@ -3,6 +3,8 @@ package org.thoughtcrime.securesms.util
 import android.content.res.Resources
 import android.os.Build
 import androidx.annotation.ColorRes
+import androidx.recyclerview.widget.RecyclerView
+import kotlin.math.max
 import kotlin.math.roundToInt
 
 fun Resources.getColorWithID(@ColorRes id: Int, theme: Resources.Theme?): Int {
@@ -30,3 +32,8 @@ fun toDp(px: Float, resources: Resources): Float {
     val scale = resources.displayMetrics.density
     return (px / scale)
 }
+
+val RecyclerView.isScrolledToBottom: Boolean
+    get() = computeVerticalScrollOffset().coerceAtLeast(0) +
+            computeVerticalScrollExtent() +
+            toPx(50, resources) >= computeVerticalScrollRange()