1 files changed, 88 insertions, 0 deletions
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUnfoldAnimationController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUnfoldAnimationController.java
new file mode 100644
index 0000000000..c785186446
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+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUnfoldAnimationController.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.view.View;
+import android.view.WindowManager;
+
+import com.android.quickstep.util.LauncherViewsMoveFromCenterTranslationApplier;
+import com.android.systemui.shared.animation.UnfoldMoveFromCenterAnimator;
+import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
+import com.android.systemui.unfold.util.ScopedUnfoldTransitionProgressProvider;
+
+/**
+ * Controls animation of taskbar icons when unfolding foldable devices
+ */
+public class TaskbarUnfoldAnimationController {
+
+    private final ScopedUnfoldTransitionProgressProvider mUnfoldTransitionProgressProvider;
+    private final UnfoldMoveFromCenterAnimator mMoveFromCenterAnimator;
+    private final TransitionListener mTransitionListener = new TransitionListener();
+    private TaskbarViewController mTaskbarViewController;
+
+    public TaskbarUnfoldAnimationController(ScopedUnfoldTransitionProgressProvider
+            unfoldTransitionProgressProvider, WindowManager windowManager) {
+        mUnfoldTransitionProgressProvider = unfoldTransitionProgressProvider;
+        mMoveFromCenterAnimator = new UnfoldMoveFromCenterAnimator(windowManager,
+                new LauncherViewsMoveFromCenterTranslationApplier());
+    }
+
+    /**
+     * Initializes the controller
+     * @param taskbarControllers references to all other taskbar controllers
+     */
+    public void init(TaskbarControllers taskbarControllers) {
+        mTaskbarViewController = taskbarControllers.taskbarViewController;
+        mTaskbarViewController.addOneTimePreDrawListener(() ->
+                mUnfoldTransitionProgressProvider.setReadyToHandleTransition(true));
+        mUnfoldTransitionProgressProvider.addCallback(mTransitionListener);
+    }
+
+    /**
+     * Destroys the controller
+     */
+    public void onDestroy() {
+        mUnfoldTransitionProgressProvider.setReadyToHandleTransition(false);
+        mUnfoldTransitionProgressProvider.removeCallback(mTransitionListener);
+    }
+
+    private class TransitionListener implements TransitionProgressListener {
+
+        @Override
+        public void onTransitionStarted() {
+            mMoveFromCenterAnimator.updateDisplayProperties();
+            View[] icons = mTaskbarViewController.getIconViews();
+            for (View icon : icons) {
+                // TODO(b/193794563) we should re-register views if they are re-bound/re-inflated
+                //                   during the animation
+                mMoveFromCenterAnimator.registerViewForAnimation(icon);
+            }
+
+            mMoveFromCenterAnimator.onTransitionStarted();
+        }
+
+        @Override
+        public void onTransitionFinished() {
+            mMoveFromCenterAnimator.onTransitionFinished();
+            mMoveFromCenterAnimator.clearRegisteredViews();
+        }
+
+        @Override
+        public void onTransitionProgress(float progress) {
+            mMoveFromCenterAnimator.onTransitionProgress(progress);
+        }
+    }
+}