Wallpapers: new transitions, hiding when not visible, other cleanup.

This is work on the transitions with wallpapers.  There are now new
animations specifically for leaving the wallpaper and returning to
it, which allow us to have a consistent animation when entering home
and returning to it.  I also renamed the existing animations across
wallpapers, and cleaned up some junk in the various interpolators.

This also now hides the wallpaper surface when it is not visible,
to get rid of the wallpaper flickers people complained about albeit
in a somewhat brutal way. :)  (Though really returning us to the
previous behavior with the same previous bugs and name back to them
not being very visible, yay!)  There is are also some bug fixes
here and there about managing the wallpaper visibility that this
change revealed.

Change-Id: I913990a9a81651728122ed2e1101b75ed2c36fcb

1 files changed, 8 insertions, 2 deletions

diff --git a/core/java/android/view/WindowManagerPolicy.java b/core/java/android/view/WindowManagerPolicy.java
index dd4b65f..c40107b 100644
--- a/core/java/android/view/WindowManagerPolicy.java
+++ b/core/java/android/view/WindowManagerPolicy.java
@@ -344,12 +344,18 @@ public interface WindowManagerPolicy {
     public final int TRANSIT_TASK_TO_FRONT = 10;
     /** A window in an existing task is being put below all other tasks. */
     public final int TRANSIT_TASK_TO_BACK = 11;
+    /** A window in a new activity that doesn't have a wallpaper is being
+     * opened on top of one that does, effectively closing the wallpaper. */
+    public final int TRANSIT_WALLPAPER_CLOSE = 12;
+    /** A window in a new activity that does have a wallpaper is being
+     * opened on one that didn't, effectively opening the wallpaper. */
+    public final int TRANSIT_WALLPAPER_OPEN = 13;
     /** A window in a new activity is being opened on top of an existing one,
      * and both are on top of the wallpaper. */
-    public final int TRANSIT_WALLPAPER_ACTIVITY_OPEN = 12;
+    public final int TRANSIT_WALLPAPER_INTRA_OPEN = 14;
     /** The window in the top-most activity is being closed to reveal the
      * previous activity, and both are on top of he wallpaper. */
-    public final int TRANSIT_WALLPAPER_ACTIVITY_CLOSE = 13;
+    public final int TRANSIT_WALLPAPER_INTRA_CLOSE = 15;
     
     /** Screen turned off because of power button */
     public final int OFF_BECAUSE_OF_USER = 1;