content: /*
   * Copyright (C) 2017 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.server.wm;
  
  import static com.android.server.wm.AnimationAdapterProto.LOCAL;
  import static com.android.server.wm.LocalAnimationAdapterProto.ANIMATION_SPEC;
  
  import android.os.SystemClock;
  import android.util.proto.ProtoOutputStream;
  import android.view.SurfaceControl;
  import android.view.SurfaceControl.Transaction;
  
  import com.android.server.wm.SurfaceAnimator.OnAnimationFinishedCallback;
  
  import java.io.PrintWriter;
  
  /**
   * Animation that can be executed without holding the window manager lock. See
   * {@link SurfaceAnimationRunner}.
   */
  class LocalAnimationAdapter implements AnimationAdapter {
  
      private final AnimationSpec mSpec;
  
      private final SurfaceAnimationRunner mAnimator;
  
      LocalAnimationAdapter(AnimationSpec spec, SurfaceAnimationRunner animator) {
          mSpec = spec;
          mAnimator = animator;
      }
  
      @Override
      public boolean getShowWallpaper() {
          return mSpec.getShowWallpaper();
      }
  
      @Override
      public int getBackgroundColor() {
          return mSpec.getBackgroundColor();
      }
  
      @Override
      public void startAnimation(SurfaceControl animationLeash, Transaction t,
              OnAnimationFinishedCallback finishCallback) {
          mAnimator.startAnimation(mSpec, animationLeash, t,
                  () -> finishCallback.onAnimationFinished(this));
      }
  
      @Override
      public void onAnimationCancelled(SurfaceControl animationLeash) {
          mAnimator.onAnimationCancelled(animationLeash);
      }
  
      @Override
      public long getDurationHint() {
          return mSpec.getDuration();
      }
  
      @Override
      public long getStatusBarTransitionsStartTime() {
          return mSpec.calculateStatusBarTransitionStartTime();
      }
  
      @Override
      public void dump(PrintWriter pw, String prefix) {
          mSpec.dump(pw, prefix);
      }
  
      @Override
      public void writeToProto(ProtoOutputStream proto) {
          final long token = proto.start(LOCAL);
          mSpec.writeToProto(proto, ANIMATION_SPEC);
          proto.end(token);
      }
  
      /**
       * Describes how to apply an animation.
       */
      interface AnimationSpec {
  
          /**
           * @see AnimationAdapter#getShowWallpaper
           */
          default boolean getShowWallpaper() {
              return false;
          }
  
          /**
           * @see AnimationAdapter#getBackgroundColor
           */
          default int getBackgroundColor() {
              return 0;
          }
  
          /**
           * @see AnimationAdapter#getStatusBarTransitionsStartTime
           */
          default long calculateStatusBarTransitionStartTime() {
              return SystemClock.uptimeMillis();
          }
  
          /**
           * @return The duration of the animation.
           */
          long getDuration();
  
          /**
           * Called when the spec needs to apply the current animation state to the leash.
           *
           * @param t               The transaction to use to apply a transform.
           * @param leash           The leash to apply the state to.
           * @param currentPlayTime The current time of the animation.
           */
          void apply(Transaction t, SurfaceControl leash, long currentPlayTime);
  
          /**
           * @see AppTransition#canSkipFirstFrame
           */
          default boolean canSkipFirstFrame() {
              return false;
          }
  
          /**
           * @return {@code true} if we need to wake-up SurfaceFlinger earlier during this animation.
           *
           * @see Transaction#setEarlyWakeup
           */
          default boolean needsEarlyWakeup() { return false; }
  
          void dump(PrintWriter pw, String prefix);
  
          default void writeToProto(ProtoOutputStream proto, long fieldId) {
              final long token = proto.start(fieldId);
              writeToProtoInner(proto);
              proto.end(token);
          }
  
          void writeToProtoInner(ProtoOutputStream proto);
      }
  }
  