commit 5c7bd017058ff073b73e96726aa44c4a113f453f
author Craig Mautner <cmautner@google.com> Wed Nov 13 13:09:35 2013 -0800
committer Craig Mautner <cmautner@google.com> Wed Nov 13 13:09:35 2013 -0800
tree 57118a4d74eb5e14b8986e75b2cca2aaf6341439
parent 48dab493b927f4a71687ccd557084ccee195de73

Keyguard isn't visible if it hasn't been drawn.

Reduces jank in multiuser lock from QuickSettings. The launcher and
wallpaper were being hidden as soon as the surface for the keyguard
was created. Now they are not hidden until the keyguard has been
drawn. This still leaves a short time where there is a black screen
but it is considerably shorter than it was. Comparable to jb now.

Fixes bug 11046339.

Change-Id: I349d95dba72da27e5c05a7a64c95a2774d17a34e

services/java/com/android/server/wm/WindowAnimator.java

diff --git a/services/java/com/android/server/wm/WindowAnimator.java b/services/java/com/android/server/wm/WindowAnimator.java
index cd46bb8..91f15f3 100644
--- a/services/java/com/android/server/wm/WindowAnimator.java
+++ b/services/java/com/android/server/wm/WindowAnimator.java
@@ -245,7 +245,7 @@
                                 mForceHiding = KEYGUARD_ANIMATING_OUT;
                             }
                         } else {
-                            mForceHiding = KEYGUARD_SHOWN;
+                            mForceHiding = win.isDrawnLw() ? KEYGUARD_SHOWN : KEYGUARD_NOT_SHOWN;
                         }
                     }
                     if (WindowManagerService.DEBUG_VISIBILITY) Slog.v(TAG,