core/java/android/view/inline/InlineContentView.java

/*
 * Copyright (C) 2019 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 android.view.inline;

import android.annotation.NonNull;
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.SurfaceControl;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

/**
 * This class represents a view that can hold an opaque content that may be from a different source.
 *
 * @hide
 */
public class InlineContentView extends SurfaceView {
    public InlineContentView(@NonNull Context context,
            @NonNull SurfaceControl surfaceControl) {
        super(context);
        setZOrderOnTop(true);
        getHolder().addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder holder) {
                holder.setFormat(PixelFormat.TRANSPARENT);
                new SurfaceControl.Transaction()
                        .reparent(surfaceControl, getSurfaceControl())
                        .setVisibility(surfaceControl, /* visible */ true)
                        .apply();
            }

            @Override
            public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
                // TODO(b/137800469): implement this.
            }

            @Override
            public void surfaceDestroyed(SurfaceHolder holder) {
                new SurfaceControl.Transaction()
                        .setVisibility(surfaceControl, false)
                        .reparent(surfaceControl, null)
                        .apply();
            }
        });
    }
}