Update Android port

* java/org/gnu/emacs/EmacsService.java (sync): Delete function.
* java/org/gnu/emacs/EmacsView.java (handleDirtyBitmap): Erase
with window background.
(onDetachedFromWindow): Only recycle bitmap if non-NULL.
* java/org/gnu/emacs/EmacsWindow.java (background): New field.
(changeWindowBackground): Set it.
* src/android.c (struct android_emacs_service): Remove `sync'.
(android_init_emacs_service): Likewise.
(android_sync): Delete function.
* src/androidfns.c (android_create_tip_frame): Set frame
background color correctly.
(Fx_show_tip): Make the tip frame visible.
* src/androidgui.h: Update prototypes.
* src/androidterm.c (handle_one_android_event): Handle tooltip
movement correctly.

3 files changed, 12 insertions, 21 deletions

diff --git a/java/org/gnu/emacs/EmacsService.java b/java/org/gnu/emacs/EmacsService.java
index d05ebce75dc..f99d7a40067 100644
--- a/java/org/gnu/emacs/EmacsService.java
+++ b/java/org/gnu/emacs/EmacsService.java
@@ -481,25 +481,6 @@ public final class EmacsService extends Service
     return String.valueOf (keysym);
   }
 
-  public void
-  sync ()
-  {
-    Runnable runnable;
-
-    runnable = new Runnable () {
-        public void
-        run ()
-        {
-          synchronized (this)
-            {
-              notify ();
-            }
-        }
-      };
-
-    syncRunnable (runnable);
-  }
-
   
 
   /* Start the Emacs service if necessary.  On Android 26 and up,
diff --git a/java/org/gnu/emacs/EmacsView.java b/java/org/gnu/emacs/EmacsView.java
index aefc79c4fb7..f751eaaa3e4 100644
--- a/java/org/gnu/emacs/EmacsView.java
+++ b/java/org/gnu/emacs/EmacsView.java
@@ -168,7 +168,7 @@ public final class EmacsView extends ViewGroup
       = Bitmap.createBitmap (measuredWidth,
                              measuredHeight,
                              Bitmap.Config.ARGB_8888);
-    bitmap.eraseColor (0xffffffff);
+    bitmap.eraseColor (window.background | 0xff000000);
 
     /* And canvases.  */
     canvas = new Canvas (bitmap);
@@ -507,7 +507,10 @@ public final class EmacsView extends ViewGroup
     synchronized (this)
       {
         /* Recycle the bitmap and call GC.  */
-        bitmap.recycle ();
+
+        if (bitmap != null)
+          bitmap.recycle ();
+
         bitmap = null;
         canvas = null;
         surfaceView.setBitmap (null, null);
diff --git a/java/org/gnu/emacs/EmacsWindow.java b/java/org/gnu/emacs/EmacsWindow.java
index ffc7476f010..9d907d2b481 100644
--- a/java/org/gnu/emacs/EmacsWindow.java
+++ b/java/org/gnu/emacs/EmacsWindow.java
@@ -129,6 +129,10 @@ public final class EmacsWindow extends EmacsHandleObject
   /* Whether or not this window is fullscreen.  */
   public boolean fullscreen;
 
+  /* The window background pixel.  This is used by EmacsView when
+     creating new bitmaps.  */
+  public volatile int background;
+
   public
   EmacsWindow (short handle, final EmacsWindow parent, int x, int y,
                int width, int height, boolean overrideRedirect)
@@ -183,6 +187,9 @@ public final class EmacsWindow extends EmacsHandleObject
     /* scratchGC is used as the argument to a FillRectangles req.  */
     scratchGC.foreground = pixel;
     scratchGC.markDirty (false);
+
+    /* Make the background known to the view as well.  */
+    background = pixel;
   }
 
   public Rect