Resolve disagreements in accounting of tooltip positions on Android

* java/org/gnu/emacs/EmacsService.java (getLocationInWindow):
New function.

* java/org/gnu/emacs/EmacsWindow.java (translateCoordinates):
Derive "root window" position from the origin point of the
containing activity's window rather than that of the screen,
the two of which differ when "freeform mode" is enabled.

2 files changed, 21 insertions, 3 deletions

diff --git a/java/org/gnu/emacs/EmacsService.java b/java/org/gnu/emacs/EmacsService.java
index 34682feeedb..052793eabaf 100644
--- a/java/org/gnu/emacs/EmacsService.java
+++ b/java/org/gnu/emacs/EmacsService.java
@@ -387,6 +387,23 @@ public final class EmacsService extends Service
     EmacsService.<Void>syncRunnable (task);
   }
 
+  public void
+  getLocationInWindow (final EmacsView view, final int[] coordinates)
+  {
+    FutureTask<Void> task;
+
+    task = new FutureTask<Void> (new Callable<Void> () {
+        public Void
+        call ()
+        {
+          view.getLocationInWindow (coordinates);
+          return null;
+        }
+      });
+
+    EmacsService.<Void>syncRunnable (task);
+  }
+
 
 
   public static void
diff --git a/java/org/gnu/emacs/EmacsWindow.java b/java/org/gnu/emacs/EmacsWindow.java
index 91e97fa8b61..911e082144e 100644
--- a/java/org/gnu/emacs/EmacsWindow.java
+++ b/java/org/gnu/emacs/EmacsWindow.java
@@ -1551,10 +1551,11 @@ public final class EmacsWindow extends EmacsHandleObject
   {
     int[] array;
 
-    /* This is supposed to translate coordinates to the root
-       window.  */
+    /* This is supposed to translate coordinates to the root window,
+       whose origin point, in this context, is that of the toplevel
+       activity host to this view.  */
     array = new int[2];
-    EmacsService.SERVICE.getLocationOnScreen (view, array);
+    EmacsService.SERVICE.getLocationInWindow (view, array);
 
     /* Now, the coordinates of the view should be in array.  Offset X
        and Y by them.  */