Fix issue where reaction shade is offset in chat bubbles.

Fixes #10843

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java

@@ -23,6 +23,7 @@ import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.Intent;
+import android.graphics.Rect;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Build;
@@ -309,7 +310,9 @@ public class ConversationFragment extends LoggingFragment {
       list.setTranslationY(Math.min(0, -chTop));
       list.setOverScrollMode(RecyclerView.OVER_SCROLL_NEVER);
     }
-    listener.onListVerticalTranslationChanged(list.getTranslationY());
+
+    int offset = WindowUtil.isStatusBarPresent(requireActivity().getWindow()) ? ViewUtil.getStatusBarHeight(list) : 0;
+    listener.onListVerticalTranslationChanged(list.getTranslationY() - offset);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationReactionOverlay.java

@@ -141,7 +141,7 @@ public final class ConversationReactionOverlay extends RelativeLayout {
   }
 
   public void setListVerticalTranslation(float translationY) {
-    maskView.setTargetParentTranslationY(translationY - ViewUtil.getStatusBarHeight(maskView));
+    maskView.setTargetParentTranslationY(translationY);
   }
 
   public void show(@NonNull Activity activity,

app/src/main/java/org/thoughtcrime/securesms/util/WindowUtil.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.util;
 
 import android.app.Activity;
+import android.graphics.Rect;
 import android.os.Build;
 import android.view.View;
 import android.view.Window;
@@ -62,6 +63,16 @@ public final class WindowUtil {
     window.setStatusBarColor(color);
   }
 
+  /**
+   * A sort of roundabout way of determining if the status bar is present by seeing if there's a
+   * vertical window offset.
+   */
+  public static boolean isStatusBarPresent(@NonNull Window window) {
+    Rect rectangle = new Rect();
+    window.getDecorView().getWindowVisibleDisplayFrame(rectangle);
+    return rectangle.top > 0;
+  }
+
   private static void clearSystemUiFlags(@NonNull Window window, int flags) {
     View view    = window.getDecorView();
     int  uiFlags = view.getSystemUiVisibility();