Update Android port

* Makefile.in (java): Depend on info.
(MAKEFILE_NAME):
(config.status): Remove unneeded changes.
* configure.ac (BUILD_DETAILS, ANDROID_STUBIFY): Don't require a
C++ compiler on Android.
* java/AndroidManifest.xml: <EmacsActivity>: Set launchMode
appropriately.  <EmacsMultitaskActivity>: New activity.
* java/Makefile.in (CROSS_BINS): Add EmacsClient.
* java/org/gnu/emacs/EmacsActivity.java (EmacsActivity)
(onCreate): Use the window attachment manager.
* java/org/gnu/emacs/EmacsCopyArea.java (EmacsCopyArea)
(paintTo): Implement clip masks correctly.
* java/org/gnu/emacs/EmacsDrawRectangle.java (getRect, paintTo):
Fix damage tracking rectangles.
* java/org/gnu/emacs/EmacsFontDriver.java (FontSpec, toString):
New function.
(FontMetrics, EmacsFontDriver): Fix signature of textExtents.
* java/org/gnu/emacs/EmacsMultitaskActivity.java
(EmacsMultitaskActivity): New file.
* java/org/gnu/emacs/EmacsNative.java (EmacsNative): New
functions sendFocusIn, sendFocusOut, sendWindowAction.
* java/org/gnu/emacs/EmacsPaintQueue.java (run): Fix clipping
handling.
* java/org/gnu/emacs/EmacsPixmap.java (EmacsPixmap): Add
constructor for mutable pixmaps.
* java/org/gnu/emacs/EmacsSdk23FontDriver.java
(EmacsSdk23FontDriver): New file.
* java/org/gnu/emacs/EmacsSdk7FontDriver.java
(EmacsSdk7FontDriver, Sdk7Typeface, Sdk7FontEntity, Sdk7FontObject)
(checkMatch, hasChar, encodeChar): Implement text display and
fix font metrics semantics.

* java/org/gnu/emacs/EmacsService.java (EmacsService): Remove
availableChildren.
(getLibraryDirectory, onCreate): Pass pixel density to Emacs.
(clearArea): Fix arguments.  Switch to using the window
attachment manager.
* java/org/gnu/emacs/EmacsSurfaceView.java (surfaceChanged)
(surfaceCreated): Flip buffers on surface attachment.
* java/org/gnu/emacs/EmacsView.java (EmacsView, swapBuffers):
New argument FORCE.  Always swap if it is true.
(onKeyMultiple, onFocusChanged): New functions.

* java/org/gnu/emacs/EmacsWindow.java (EmacsWindow, destroyHandle)
(run): Switch to using the window attachment manager.
* java/org/gnu/emacs/EmacsWindowAttachmentManager.java
(EmacsWindowAttachmentManager): New file.

* lisp/cus-edit.el (custom-button, custom-button-mouse)
(custom-button-pressed):
* lisp/faces.el (tool-bar): Define faces correctly on Android.
* src/android.c (struct android_emacs_pixmap): Add mutable
constructor.
(struct android_emacs_drawable): New structure.
(android_write_event): Check if event queue hasn't yet been
initialized.
(android_select): Set errno to EINTR if pselect fails.
(android_close): Remove unused debugging code.
(android_get_home_directory): New function.
(Java_org_gnu_emacs_EmacsNative_setEmacsParams): Set pixel
density and compute game path.
(android_init_emacs_drawable): New function.
(Java_org_gnu_emacs_EmacsNative_sendKeyPress): New argument
`unicode_char'.  Pass it in events.
(Java_org_gnu_emacs_EmacsNative_sendKeyRelease): Likewise.
(Java_org_gnu_emacs_EmacsNative_sendFocusIn)
(Java_org_gnu_emacs_EmacsNative_sendFocusOut)
(Java_org_gnu_emacs_EmacsNative_sendWindowAction): New
functions.
(android_resolve_handle): Export function.
(android_change_gc): Clear clip rects under the right
circumstances.  Set right clip mask field.
(android_create_pixmap_from_bitmap_data): Use correct alpha
channels.
(android_create_pixmap): Create mutable pixmap and avoid
redundant color array allocation.
(android_create_bitmap_from_data, android_create_image)
(android_destroy_image, android_put_pixel, android_get_pixel)
(android_get_image, android_put_image, faccessat): New
functions.

* src/android.h: Update prototypes.

* src/androidfns.c (android_default_font_parameter): Prefer
monospace to Droid Sans Mono.
* src/androidfont.c (struct android_emacs_font_driver): New
method `draw'.
(struct android_emacs_font_spec): New field `dpi'.
(struct androidfont_info): Add font metrics cache.
(android_init_font_driver, android_init_font_spec): Adjust
accordingly.
(androidfont_from_lisp, androidfont_from_java): Handle new
fields.
(androidfont_draw): Implement function.
(androidfont_open_font): Set pixel size correctly.
(androidfont_close_font): Free metrics cache.
(androidfont_cache_text_extents)
(androidfont_check_cached_extents): New functions.
(androidfont_text_extents): Cache glyph metrics somewhere for
future use.
(androidfont_list_family): Implement function.

* src/androidgui.h (enum android_event_type): New focus and
window action events.
(enum android_modifier_mask): New masks.
(struct android_key_event): New field `unicode_char'.
(ANDROID_IS_MODIFIER_KEY): Newmacro.
(struct android_focus_event, struct
android_window_action_event): New structs.
(union android_event): Add new fields.
(enum android_image_format, struct android_image): New enums and
structs.

* src/androidterm.c (android_android_to_emacs_modifiers)
(android_emacs_to_android_modifiers, android_lower_frame)
(android_raise_frame, android_new_focus_frame)
(android_focus_changed, android_detect_focus_change): New
functions.
(handle_one_android_event): Implement focus and key event
handling.
(android_frame_rehighlight): New function.
(android_frame_raise_lower): Implement accordingly.
(android_make_frame_invisible): Clear highlight_frame if
required.
(android_free_frame_resources): Clear x_focus_event_frame if
required.
(android_draw_fringe_bitmap, android_draw_image_foreground)
(android_draw_image_foreground_1)
(android_draw_image_glyph_string): Remove unnecessary code.
(android_create_terminal, android_term_init): Set the baud rate
to something sensible.
* src/androidterm.h (struct android_bitmap_record): Make
structure the same as on X.
(struct android_display_info): New focus tracking fields.
(struct android_output): Likewise.
* src/dispextern.h (struct image): Add ximg and mask_img on
Android.

* src/emacs.c (android_emacs_init): Fix argc sorting iteration.

* src/fileio.c (user_homedir):
(get_homedir): Implement correctly on Android.

* src/font.h (PT_PER_INCH): Define correctly on Android.

* src/fringe.c (X, swap_nibble, init_fringe_bitmap): Swap fringe
bitmaps correctly on Android.

* src/image.c (GET_PIXEL, image_create_bitmap_from_data)
(image_create_bitmap_from_file, free_bitmap_record)
(image_unget_x_image_or_dc, struct image_type)
(prepare_image_for_display, image_clear_image_1)
(image_size_in_bytes, x_check_image_size)
(x_create_x_image_and_pixmap, x_destroy_x_image)
(image_check_image_size, image_create_x_image_and_pixmap_1)
(image_destroy_x_image, gui_put_x_image, image_put_x_image)
(image_get_x_image, image_unget_x_image)
(Create_Pixmap_From_Bitmap_Data, image_pixmap_draw_cross)
(MaskForeground, image_types, syms_of_image): Implement all of
the above on Android in terms of an API very similar to X.

* src/keyboard.c (FUNCTION_KEY_OFFSET, lispy_function_keys):
Define on Android to something sensible.

* src/lread.c (build_load_history): Fix problem.

java/org/gnu/emacs/EmacsView.java

@@ -19,17 +19,20 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 package org.gnu.emacs;
 
+import android.content.res.ColorStateList;
+
 import android.view.View;
 import android.view.KeyEvent;
 import android.view.ViewGroup;
+
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.Region;
 import android.graphics.Paint;
-import android.util.Log;
 
 import android.os.Build;
+import android.util.Log;
 
 /* This is an Android view which has a back and front buffer.  When
    swapBuffers is called, the back buffer is swapped to the front
@@ -70,10 +73,11 @@ public class EmacsView extends ViewGroup
     this.damageRegion = new Region ();
     this.paint = new Paint ();
 
+    setFocusable (true);
+    setFocusableInTouchMode (true);
+
     /* Create the surface view.  */
     this.surfaceView = new EmacsSurfaceView (this);
-
-    setFocusable (FOCUSABLE);
     addView (this.surfaceView);
   }
 
@@ -162,7 +166,7 @@ public class EmacsView extends ViewGroup
   }
 
   public void
-  swapBuffers ()
+  swapBuffers (boolean force)
   {
     Bitmap back;
     Canvas canvas;
@@ -185,14 +189,25 @@ public class EmacsView extends ViewGroup
     if (canvas == null)
       return;
 
-    /* Copy from the back buffer to the canvas.  */
-    canvas.drawBitmap (bitmap, damageRect, damageRect, paint);
+    /* Copy from the back buffer to the canvas.  If damageRect was
+       made empty, then draw the entire back buffer.  */
+
+    if (damageRect.isEmpty ())
+      canvas.drawBitmap (bitmap, 0f, 0f, paint);
+    else
+      canvas.drawBitmap (bitmap, damageRect, damageRect, paint);
 
     /* Unlock the canvas and clear the damage.  */
     surfaceView.unlockCanvasAndPost (canvas);
     damageRegion.setEmpty ();
   }
 
+  public void
+  swapBuffers ()
+  {
+    swapBuffers (false);
+  }
+
   @Override
   public boolean
   onKeyDown (int keyCode, KeyEvent event)
@@ -201,6 +216,14 @@ public class EmacsView extends ViewGroup
     return true;
   }
 
+  @Override
+  public boolean
+  onKeyMultiple (int keyCode, int repeatCount, KeyEvent event)
+  {
+    window.onKeyDown (keyCode, event);
+    return true;
+  }
+
   @Override
   public boolean
   onKeyUp (int keyCode, KeyEvent event)
@@ -208,4 +231,14 @@ public class EmacsView extends ViewGroup
     window.onKeyUp (keyCode, event);
     return true;
   }
+
+  @Override
+  public void
+  onFocusChanged (boolean gainFocus, int direction,
+		  Rect previouslyFocusedRect)
+  {
+    window.onFocusChanged (gainFocus);
+    super.onFocusChanged (gainFocus, direction,
+			  previouslyFocusedRect);
+  }
 };