Add new window manager type for a hacking second-level media surface.

This adds a new window type that is a surface that sits between the
current media type and the application window, in theory allowing you
to have two surface views in your hierarchy and control their
Z-ordering.  There is also another hidden API on SurfaceView to set
the type of your window.

All a big hack, but for the good of the commonwealth!

core/java/android/view/SurfaceView.java

@@ -100,6 +100,8 @@ public class SurfaceView extends View {
     static final int KEEP_SCREEN_ON_MSG = 1;
     static final int GET_NEW_SURFACE_MSG = 2;
     
+    int mWindowType = WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA;
+    
     boolean mIsCreating = false;
 
     final Handler mHandler = new Handler() {
@@ -285,6 +287,15 @@ public class SurfaceView extends View {
         super.dispatchDraw(canvas);
     }
 
+    /**
+     * Hack to allow special layering of windows.  The type is one of the
+     * types in WindowManager.LayoutParams.  This is a hack so:
+     * @hide
+     */
+    public void setWindowType(int type) {
+        mWindowType = type;
+    }
+    
     private void updateWindow(boolean force) {
         if (!mHaveFrame) {
             return;
@@ -342,7 +353,7 @@ public class SurfaceView extends View {
 
                 if (mWindow == null) {
                     mWindow = new MyWindow(this);
-                    mLayout.type = WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA;
+                    mLayout.type = mWindowType;
                     mLayout.gravity = Gravity.LEFT|Gravity.TOP;
                     mSession.add(mWindow, mLayout,
                             mVisible ? VISIBLE : GONE, mContentInsets);

core/java/android/view/Window.java

@@ -376,8 +376,14 @@ public abstract class Window {
                     String title;
                     if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA) {
                         title="Media";
+                    } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY) {
+                        title="MediaOvr";
                     } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) {
                         title="Panel";
+                    } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL) {
+                        title="SubPanel";
+                    } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG) {
+                        title="AtchDlg";
                     } else {
                         title=Integer.toString(wp.type);
                     }

core/java/android/view/WindowManager.java

@@ -209,6 +209,15 @@ public interface WindowManager extends ViewManager {
          */
         public static final int TYPE_APPLICATION_ATTACHED_DIALOG = FIRST_SUB_WINDOW+3;
         
+        /**
+         * Window type: window for showing overlays on top of media windows.
+         * These windows are displayed between TYPE_APPLICATION_MEDIA and the
+         * application window.  They should be translucent to be useful.  This
+         * is a big ugly hack so:
+         * @hide
+         */
+        public static final int TYPE_APPLICATION_MEDIA_OVERLAY  = FIRST_SUB_WINDOW+4;
+    
         /**
          * End of types of sub-windows.
          */