From fb578e4528855c8a82f0478b1eab9393c4711821 Mon Sep 17 00:00:00 2001
From: Andy Wickham <awickham@google.com>
Date: Tue, 24 Sep 2019 12:51:36 -0700
Subject: [PATCH] Fades out Assistant when entering Overview.

This makes the transition smoother, since
the Assistant goes away at the end of it.

Note this only applies to the transition
while an app other than Launcher is live.

Before: https://drive.google.com/open?id=18SOWTtTUzt19TReAYnofQLIShJ2I-odP
After: https://drive.google.com/open?id=1hqsikXSlCnSvNg0ZQYHxP-OIbS5yt9aW

Bug: 136282913
Change-Id: Ia53c2407c82725c776f27b0d6e80a34554b4a303
Merged-In: Ia53c2407c82725c776f27b0d6e80a34554b4a303
Tested: Manually
---
 .../com/android/quickstep/util/ClipAnimationHelper.java   | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
index cae273a164..fa3be9c125 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
@@ -37,6 +37,7 @@ import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.views.RecentsView;
@@ -50,8 +51,6 @@ import com.android.systemui.shared.system.SyncRtSurfaceTransactionApplierCompat.
 import com.android.systemui.shared.system.TransactionCompat;
 import com.android.systemui.shared.system.WindowManagerWrapper;
 
-import java.util.function.BiFunction;
-
 /**
  * Utility class to handle window clip animation
  */
@@ -213,6 +212,11 @@ public class ClipAnimationHelper {
                         }
                         mCurrentCornerRadius = cornerRadius;
                     }
+                    // Fade out Assistant overlay.
+                    if (app.activityType == RemoteAnimationTargetCompat.ACTIVITY_TYPE_ASSISTANT
+                            && app.isNotInRecents) {
+                        alpha = 1 - Interpolators.DEACCEL_2_5.getInterpolation(progress);
+                    }
                 } else if (targetSet.hasRecents) {
                     // If home has a different target then recents, reverse anim the
                     // home target.