Indicate PiP animation type from Launcher to SysUI

Also, need callback from SysUI to Launcher once the pip animation is
started to keep back compatibility.

Bug: 146594635
Test: manually
Change-Id: I617a17fd5f6049d9f1d49f9f834623a2bb49f6ca

quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java

@@ -332,6 +332,8 @@ public class FallbackSwipeHandler extends BaseSwipeUpHandler<RecentsActivity, Fa
                     // Send a home intent to clear the task stack
                     mContext.startActivity(mGestureState.getHomeIntent());
                 } else {
+                    // Notify swipe-to-home (recents animation) is finished
+                    SystemUiProxy.INSTANCE.get(mContext).notifySwipeToHomeFinished();
                     mRecentsAnimationController.finish(true, () -> {
                         if (!mTouchedHomeDuringTransition) {
                             // If the user hasn't interacted with the screen during the transition,

quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java

@@ -699,6 +699,8 @@ public class LauncherSwipeHandler<T extends BaseDraggingActivity>
         switch (mGestureState.getEndTarget()) {
             case HOME:
                 mStateCallback.setState(STATE_SCALED_CONTROLLER_HOME | STATE_CAPTURE_SCREENSHOT);
+                // Notify swipe-to-home (recents animation) is finished
+                SystemUiProxy.INSTANCE.get(mContext).notifySwipeToHomeFinished();
                 break;
             case RECENTS:
                 mStateCallback.setState(STATE_SCALED_CONTROLLER_RECENTS | STATE_CAPTURE_SCREENSHOT

quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java

@@ -17,6 +17,7 @@
 package com.android.quickstep.views;
 
 import static androidx.dynamicanimation.animation.DynamicAnimation.MIN_VISIBLE_CHANGE_PIXELS;
+
 import static com.android.launcher3.BaseActivity.STATE_HANDLER_INVISIBILITY_FLAGS;
 import static com.android.launcher3.InvariantDeviceProfile.CHANGE_FLAG_ICON_PARAMS;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
@@ -105,11 +106,13 @@ import com.android.quickstep.RecentsAnimationController;
 import com.android.quickstep.RecentsAnimationTargets;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.RecentsModel.TaskVisualsChangeListener;
+import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskThumbnailCache;
 import com.android.quickstep.TaskUtils;
 import com.android.quickstep.ViewUtils;
 import com.android.quickstep.util.AppWindowAnimationHelper;
 import com.android.quickstep.util.LayoutUtils;
+import com.android.systemui.shared.recents.IPinnedStackAnimationListener;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
@@ -261,7 +264,10 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
                 }
             });
         }
+    };
 
+    private final IPinnedStackAnimationListener mIPinnedStackAnimationListener =
+            new IPinnedStackAnimationListener.Stub() {
         @Override
         public void onPinnedStackAnimationStarted() {
             // Needed for activities that auto-enter PiP, which will not trigger a remote
@@ -443,6 +449,8 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         mSyncTransactionApplier = new SyncRtSurfaceTransactionApplierCompat(this);
         RecentsModel.INSTANCE.get(getContext()).addThumbnailChangeListener(this);
         mIdp.addOnChangeListener(this);
+        SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(
+                mIPinnedStackAnimationListener);
     }
 
     @Override
@@ -455,6 +463,7 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         mSyncTransactionApplier = null;
         RecentsModel.INSTANCE.get(getContext()).removeThumbnailChangeListener(this);
         mIdp.removeOnChangeListener(this);
+        SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(null);
     }
 
     @Override

quickstep/src/com/android/quickstep/SystemUiProxy.java

@@ -29,6 +29,7 @@ import android.util.Log;
 import android.view.MotionEvent;
 
 import com.android.launcher3.util.MainThreadInitializedObject;
+import com.android.systemui.shared.recents.IPinnedStackAnimationListener;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 
 /**
@@ -268,9 +269,7 @@ public class SystemUiProxy implements ISystemUiProxy {
         }
     }
 
-    /**
-     * See SharedApiCompat#setShelfHeight()
-     */
+    @Override
     public void setShelfHeight(boolean visible, int shelfHeight) {
         boolean changed = visible != mLastShelfVisible || shelfHeight != mLastShelfHeight;
         if (mSystemUiProxy != null && changed) {
@@ -306,4 +305,32 @@ public class SystemUiProxy implements ISystemUiProxy {
             }
         }
     }
+
+    /**
+     * Notifies that swipe-to-home action is finished.
+     */
+    @Override
+    public void notifySwipeToHomeFinished() {
+        if (mSystemUiProxy != null) {
+            try {
+                mSystemUiProxy.notifySwipeToHomeFinished();
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call setPinnedStackAnimationType", e);
+            }
+        }
+    }
+
+    /**
+     * Sets listener to get pinned stack animation callbacks.
+     */
+    @Override
+    public void setPinnedStackAnimationListener(IPinnedStackAnimationListener listener) {
+        if (mSystemUiProxy != null) {
+            try {
+                mSystemUiProxy.setPinnedStackAnimationListener(listener);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call setPinnedStackAnimationListener", e);
+            }
+        }
+    }
 }