Implement issue #1780928: Need support hiding nav keys.

This implements support for devices whose hardware can hide
their navigation keys.  It works much like the existing keyboardHidden
configuration, and for compatibility uses the same configuration
change bit.

Also add FLAG_TURN_ON_SCREEN for windows, which has the system
cause the screen to be turned on when the window is displayed.
Great fun when used with FLAG_SHOW_WHEN_LOCKED!

Change-Id: I0b867f19af85cfd8786a14cea194b34f7bdd9b7a

1 files changed, 20 insertions, 2 deletions

diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index bd2c3ed..60496d6 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -442,6 +442,8 @@ public class WindowManagerService extends IWindowManager.Stub
     // Who is holding the screen on.
     Session mHoldingScreenOn;
 
+    boolean mTurnOnScreen;
+    
     /**
      * Whether the UI is currently running in touch mode (not showing
      * navigational focus because the user is directly pressing the screen).
@@ -2208,6 +2210,10 @@ public class WindowManagerService extends IWindowManager.Stub
                         && !win.mCommitDrawPending && !mDisplayFrozen) {
                     applyEnterAnimationLocked(win);
                 }
+                if (displayed && (win.mAttrs.flags
+                        & WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON) != 0) {
+                    win.mTurnOnScreen = true;
+                }
                 if ((attrChanges&WindowManager.LayoutParams.FORMAT_CHANGED) != 0) {
                     // To change the format, we need to re-build the surface.
                     win.destroySurfaceLocked();
@@ -6479,6 +6485,7 @@ public class WindowManagerService extends IWindowManager.Stub
         int mLastLayer;
         boolean mHaveFrame;
         boolean mObscured;
+        boolean mTurnOnScreen;
 
         WindowState mNextOutsideTouch;
 
@@ -7710,10 +7717,11 @@ public class WindowManagerService extends IWindowManager.Stub
                         pw.print(" mDestroying="); pw.print(mDestroying);
                         pw.print(" mRemoved="); pw.println(mRemoved);
             }
-            if (mOrientationChanging || mAppFreezing) {
+            if (mOrientationChanging || mAppFreezing || mTurnOnScreen) {
                 pw.print(prefix); pw.print("mOrientationChanging=");
                         pw.print(mOrientationChanging);
-                        pw.print(" mAppFreezing="); pw.println(mAppFreezing);
+                        pw.print(" mAppFreezing="); pw.print(mAppFreezing);
+                        pw.print(" mTurnOnScreen="); pw.println(mTurnOnScreen);
             }
             if (mHScale != 1 || mVScale != 1) {
                 pw.print(prefix); pw.print("mHScale="); pw.print(mHScale);
@@ -9782,6 +9790,12 @@ public class WindowManagerService extends IWindowManager.Stub
             Message m = mH.obtainMessage(H.HOLD_SCREEN_CHANGED, holdScreen);
             mH.sendMessage(m);
         }
+        
+        if (mTurnOnScreen) {
+            mPowerManager.userActivity(SystemClock.uptimeMillis(), false,
+                    LocalPowerManager.BUTTON_EVENT, true);
+            mTurnOnScreen = false;
+        }
     }
 
     void requestAnimationLocked(long delay) {
@@ -9803,6 +9817,10 @@ public class WindowManagerService extends IWindowManager.Stub
         try {
             if (win.mSurface != null) {
                 win.mSurface.show();
+                if (win.mTurnOnScreen) {
+                    win.mTurnOnScreen = false;
+                    mTurnOnScreen = true;
+                }
             }
             return true;
         } catch (RuntimeException e) {