Merge "Fix nav bar glitch when quickly turning screen off then on." into jb-mr1-dev

Author: John Spurlock

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java

@@ -18,6 +18,7 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
+import android.animation.LayoutTransition;
 import android.app.StatusBarManager;
 import android.content.Context;
 import android.content.res.Resources;
@@ -34,6 +35,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.Surface;
+import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
@@ -62,6 +64,7 @@ public class NavigationBarView extends LinearLayout {
 
     int mBarSize;
     boolean mVertical;
+    boolean mScreenOn;
 
     boolean mHidden, mLowProfile, mShowMenu;
     int mDisabledFlags = 0;
@@ -169,6 +172,11 @@ public NavigationBarView(Context context, AttributeSet attrs) {
         mBackAltLandIcon = res.getDrawable(R.drawable.ic_sysbar_back_ime);
     }
 
+    public void notifyScreenOn(boolean screenOn) {
+        mScreenOn = screenOn;
+        setDisabledFlags(mDisabledFlags, true);
+    }
+
     View.OnTouchListener mLightsOutListener = new View.OnTouchListener() {
         @Override
         public boolean onTouch(View v, MotionEvent ev) {
@@ -231,6 +239,16 @@ public void setDisabledFlags(int disabledFlags, boolean force) {
 
         setSlippery(disableHome && disableRecent && disableBack);
 
+        if (!mScreenOn && mCurrentView != null) {
+            ViewGroup navButtons = (ViewGroup) mCurrentView.findViewById(R.id.nav_buttons);
+            LayoutTransition lt = navButtons == null ? null : navButtons.getLayoutTransition();
+            if (lt != null) {
+                lt.disableTransitionType(
+                        LayoutTransition.CHANGE_APPEARING | LayoutTransition.CHANGE_DISAPPEARING |
+                        LayoutTransition.APPEARING | LayoutTransition.DISAPPEARING);
+            }
+        }
+
         getBackButton()   .setVisibility(disableBack       ? View.INVISIBLE : View.VISIBLE);
         getHomeButton()   .setVisibility(disableHome       ? View.INVISIBLE : View.VISIBLE);
         getRecentsButton().setVisibility(disableRecent     ? View.INVISIBLE : View.VISIBLE);

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -783,6 +783,11 @@ private void repositionNavigationBar() {
         mWindowManager.updateViewLayout(mNavigationBarView, getNavigationBarLayoutParams());
     }
 
+    private void notifyNavigationBarScreenOn(boolean screenOn) {
+        if (mNavigationBarView == null) return;
+        mNavigationBarView.notifyScreenOn(screenOn);
+    }
+
     private WindowManager.LayoutParams getNavigationBarLayoutParams() {
         WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                 LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT,
@@ -2256,6 +2261,7 @@ public void onReceive(Context context, Intent intent) {
             else if (Intent.ACTION_SCREEN_OFF.equals(action)) {
                 // no waiting!
                 makeExpandedInvisible();
+                notifyNavigationBarScreenOn(false);
             }
             else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
                 if (DEBUG) {
@@ -2271,6 +2277,7 @@ else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
             else if (Intent.ACTION_SCREEN_ON.equals(action)) {
                 // work around problem where mDisplay.getRotation() is not stable while screen is off (bug 7086018)
                 repositionNavigationBar();
+                notifyNavigationBarScreenOn(true);
             }
         }
     };

policy/src/com/android/internal/policy/impl/keyguard/KeyguardViewMediator.java

@@ -1306,6 +1306,13 @@ private void adjustStatusBarLocked() {
                 // (like recents). Temporary enable/disable (e.g. the "back" button) are
                 // done in KeyguardHostView.
                 flags |= StatusBarManager.DISABLE_RECENT;
+                if (!mScreenOn) {
+                    // Disable all navbar buttons on screen off.  The navigation bar will hide
+                    // these immediately to avoid seeing the end of layout transition animations
+                    // if quickly turning back on.
+                    flags |= StatusBarManager.DISABLE_HOME;
+                    flags |= StatusBarManager.DISABLE_BACK;
+                }
                 if (isSecure() || !ENABLE_INSECURE_STATUS_BAR_EXPAND) {
                     // showing secure lockscreen; disable expanding.
                     flags |= StatusBarManager.DISABLE_EXPAND;