content: /*
   * Copyright (C) 2018 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.quickstep.util;
  
  import android.animation.AnimatorSet;
  import android.app.ActivityOptions;
  import android.content.Context;
  import android.os.Handler;
  
  import com.android.launcher3.LauncherAnimationRunner;
  import com.android.systemui.shared.system.ActivityOptionsCompat;
  import com.android.systemui.shared.system.RemoteAnimationAdapterCompat;
  import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
  import com.android.systemui.shared.system.TransactionCompat;
  
  @FunctionalInterface
  public interface RemoteAnimationProvider {
  
      static final int Z_BOOST_BASE = 800570000;
  
      AnimatorSet createWindowAnimation(RemoteAnimationTargetCompat[] targets);
  
      default ActivityOptions toActivityOptions(Handler handler, long duration, Context context) {
          LauncherAnimationRunner runner = new LauncherAnimationRunner(handler,
                  false /* startAtFrontOfQueue */) {
  
              @Override
              public void onCreateAnimation(RemoteAnimationTargetCompat[] targetCompats,
                      AnimationResult result) {
                  result.setAnimation(createWindowAnimation(targetCompats), context);
              }
          };
          return ActivityOptionsCompat.makeRemoteAnimation(
                  new RemoteAnimationAdapterCompat(runner, duration, 0));
      }
  
      /**
       * Prepares the given {@param targets} for a remote animation, and should be called with the
       * transaction from the first frame of animation.
       *
       * @param boostModeTargets The mode indicating which targets to boost in z-order above other
       *                         targets.
       */
      static void prepareTargetsForFirstFrame(RemoteAnimationTargetCompat[] targets,
              TransactionCompat t, int boostModeTargets) {
          for (RemoteAnimationTargetCompat target : targets) {
              t.setLayer(target.leash, getLayer(target, boostModeTargets));
              t.show(target.leash);
          }
      }
  
      static int getLayer(RemoteAnimationTargetCompat target, int boostModeTarget) {
          return target.mode == boostModeTarget
                  ? Z_BOOST_BASE + target.prefixOrderIndex
                  : target.prefixOrderIndex;
      }
  }
  