Fade out navbar on lockscreen -> homescreen transition

Introduces a new SYSUI_STATE_STATUS_BAR_KEYGUARD_GOING_AWAY QuickStepContract flag, to get an early signal when the keyguard is going away

Bug: 275319714
Test: transitions manual (http://shortn/_ySNBaPFHRZ), existing tapl tests
Change-Id: Ie0044ea8e934afa793ca56a4eacc2b776edbdf0e

1 files changed, 25 insertions, 4 deletions

diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
index 5f117402fb..f675b57267 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
@@ -36,6 +36,7 @@ import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_I
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_IME_SWITCHER_SHOWING;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_NOTIFICATION_PANEL_VISIBLE;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_SCREEN_PINNING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_STATUS_BAR_KEYGUARD_GOING_AWAY;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -43,6 +44,7 @@ import android.animation.AnimatorSet;
 import android.app.RemoteAction;
 import android.content.SharedPreferences;
 import android.graphics.drawable.Icon;
+import android.os.SystemClock;
 import android.util.Log;
 import android.view.InsetsController;
 import android.view.View;
@@ -187,6 +189,10 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
     // Auto stashes when user has not interacted with the Taskbar after X ms.
     private static final long NO_TOUCH_TIMEOUT_TO_STASH_MS = 5000;
 
+    // Duration for which an unlock event is considered "current", as other events are received
+    // asynchronously.
+    private static final long UNLOCK_TRANSITION_MEMOIZATION_MS = 200;
+
     /**
      * The default stash animation, morphing the taskbar into the navbar.
      */
@@ -951,7 +957,8 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
         updateStateForFlag(FLAG_STASHED_SYSUI,
                 hasAnyFlag(systemUiStateFlags, SYSUI_STATE_SCREEN_PINNING));
 
-        boolean isLocked = hasAnyFlag(systemUiStateFlags, MASK_ANY_SYSUI_LOCKED);
+        boolean isLocked = hasAnyFlag(systemUiStateFlags, MASK_ANY_SYSUI_LOCKED)
+                && !hasAnyFlag(systemUiStateFlags, SYSUI_STATE_STATUS_BAR_KEYGUARD_GOING_AWAY);
         updateStateForFlag(FLAG_STASHED_DEVICE_LOCKED, isLocked);
 
         // Only update FLAG_STASHED_IN_APP_IME when system gesture is not in progress.
@@ -1169,6 +1176,8 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
         private @StashAnimation int mLastStartedTransitionType = TRANSITION_DEFAULT;
         private int mPrevFlags;
 
+        private long mLastUnlockTransitionTimeout = 0;
+
         StatePropertyHolder(IntPredicate stashCondition) {
             mStashCondition = stashCondition;
         }
@@ -1186,7 +1195,7 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
 
             if (DEBUG) {
                 String stateString = formatFlagChange(flags, mPrevFlags,
-                            TaskbarStashController::getStateString);
+                        TaskbarStashController::getStateString);
                 Log.d(TAG, "createSetStateAnimator: flags: " + stateString
                         + ", duration: " + duration
                         + ", isStashed: " + isStashed
@@ -1199,6 +1208,17 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
                 mPrevFlags = flags;
             }
 
+            boolean isUnlockTransition = hasAnyFlag(changedFlags, FLAG_STASHED_DEVICE_LOCKED)
+                    && !hasAnyFlag(FLAG_STASHED_DEVICE_LOCKED);
+            if (isUnlockTransition) {
+                // the launcher might not be resumed at the time the device is considered
+                // unlocked (when the keyguard goes away), but possibly shortly afterwards.
+                // To play the unlock transition at the time the unstash animation actually happens,
+                // this memoizes the state transition for UNLOCK_TRANSITION_MEMOIZATION_MS.
+                mLastUnlockTransitionTimeout =
+                        SystemClock.elapsedRealtime() + UNLOCK_TRANSITION_MEMOIZATION_MS;
+            }
+
             @StashAnimation int animationType = computeTransitionType(changedFlags);
 
             // Allow re-starting animation if upgrading from default animation type, otherwise
@@ -1229,6 +1249,7 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
         }
 
         private @StashAnimation int computeTransitionType(int changedFlags) {
+
             boolean hotseatHiddenDuringAppLaunch =
                     !mControllers.uiController.isHotseatIconOnTopWhenAligned()
                             && hasAnyFlag(changedFlags, FLAG_IN_APP);
@@ -1240,8 +1261,8 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
                 return TRANSITION_HANDLE_FADE;
             }
 
-            boolean isUnlockTransition = hasAnyFlag(changedFlags, FLAG_STASHED_DEVICE_LOCKED)
-                    && !hasAnyFlag(FLAG_STASHED_DEVICE_LOCKED);
+            boolean isUnlockTransition =
+                    SystemClock.elapsedRealtime() < mLastUnlockTransitionTimeout;
             if (isUnlockTransition) {
                 // When transitioning to unlocked device, the  hotseat will already be visible on
                 // the homescreen, thus do not play an un-stash animation.