| /* |
| * Copyright (C) 2020 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.wallpaper.util; |
| |
| import static android.view.View.MeasureSpec.EXACTLY; |
| import static android.view.View.MeasureSpec.makeMeasureSpec; |
| |
| import android.content.Context; |
| import android.service.wallpaper.WallpaperService; |
| import android.view.Surface; |
| import android.view.SurfaceControlViewHost; |
| import android.view.SurfaceHolder; |
| import android.view.SurfaceView; |
| import android.view.View; |
| import android.widget.ImageView; |
| |
| import androidx.annotation.Nullable; |
| |
| import com.android.wallpaper.module.Injector; |
| import com.android.wallpaper.module.InjectorProvider; |
| import com.android.wallpaper.module.PackageStatusNotifier; |
| |
| /** |
| * Default implementation of {@link SurfaceHolder.Callback} to render a static wallpaper when the |
| * surface has been created. |
| */ |
| public class WallpaperSurfaceCallback implements SurfaceHolder.Callback { |
| |
| /** |
| * Listener used to be notified when this surface is created |
| */ |
| public interface SurfaceListener { |
| /** |
| * Called when {@link WallpaperSurfaceCallback#surfaceCreated(SurfaceHolder)} is called. |
| */ |
| void onSurfaceCreated(); |
| } |
| |
| private Surface mLastSurface; |
| private SurfaceControlViewHost mHost; |
| // Home workspace surface is behind the app window, and so must the home image wallpaper like |
| // the live wallpaper. This view is rendered on here for home image wallpaper. |
| private ImageView mHomeImageWallpaper; |
| private final Context mContext; |
| private final View mContainerView; |
| private final SurfaceView mWallpaperSurface; |
| @Nullable |
| private final SurfaceListener mListener; |
| private boolean mSurfaceCreated; |
| |
| private PackageStatusNotifier.Listener mAppStatusListener; |
| private PackageStatusNotifier mPackageStatusNotifier; |
| |
| public WallpaperSurfaceCallback(Context context, View containerView, |
| SurfaceView wallpaperSurface, @Nullable SurfaceListener listener) { |
| mContext = context.getApplicationContext(); |
| mContainerView = containerView; |
| mWallpaperSurface = wallpaperSurface; |
| mListener = listener; |
| |
| // Notify WallpaperSurface to reset image wallpaper when encountered live wallpaper's |
| // package been changed in background. |
| Injector injector = InjectorProvider.getInjector(); |
| mPackageStatusNotifier = injector.getPackageStatusNotifier(context); |
| mAppStatusListener = (packageName, status) -> { |
| if (status != PackageStatusNotifier.PackageStatus.REMOVED) { |
| resetHomeImageWallpaper(); |
| } |
| }; |
| mPackageStatusNotifier.addListener(mAppStatusListener, |
| WallpaperService.SERVICE_INTERFACE); |
| } |
| |
| public WallpaperSurfaceCallback(Context context, View containerView, |
| SurfaceView wallpaperSurface) { |
| this(context, containerView, wallpaperSurface, null); |
| } |
| |
| @Override |
| public void surfaceCreated(SurfaceHolder holder) { |
| if (mLastSurface != holder.getSurface()) { |
| mLastSurface = holder.getSurface(); |
| setupSurfaceWallpaper(/* forceClean= */ true); |
| } |
| if (mListener != null) { |
| mListener.onSurfaceCreated(); |
| } |
| mSurfaceCreated = true; |
| } |
| |
| @Override |
| public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } |
| |
| @Override |
| public void surfaceDestroyed(SurfaceHolder holder) { |
| mSurfaceCreated = false; |
| } |
| |
| /** |
| * Call to release resources and app status listener. |
| */ |
| public void cleanUp() { |
| releaseHost(); |
| if (mHomeImageWallpaper != null) { |
| mHomeImageWallpaper.setImageDrawable(null); |
| } |
| mPackageStatusNotifier.removeListener(mAppStatusListener); |
| } |
| |
| private void releaseHost() { |
| if (mHost != null) { |
| mHost.release(); |
| mHost = null; |
| } |
| } |
| |
| /** |
| * Reset existing image wallpaper by creating a new ImageView for SurfaceControlViewHost |
| * if surface state is not created. |
| */ |
| private void resetHomeImageWallpaper() { |
| if (mSurfaceCreated) { |
| return; |
| } |
| |
| if (mHost != null) { |
| setupSurfaceWallpaper(/* forceClean= */ false); |
| } |
| } |
| |
| private void setupSurfaceWallpaper(boolean forceClean) { |
| mHomeImageWallpaper = new ImageView(mContext); |
| mHomeImageWallpaper.setBackgroundColor( |
| ResourceUtils.getColorAttr(mContext, android.R.attr.colorPrimary)); |
| mHomeImageWallpaper.measure(makeMeasureSpec(mContainerView.getWidth(), EXACTLY), |
| makeMeasureSpec(mContainerView.getHeight(), EXACTLY)); |
| mHomeImageWallpaper.layout(0, 0, mContainerView.getWidth(), |
| mContainerView.getHeight()); |
| if (forceClean) { |
| releaseHost(); |
| mHost = new SurfaceControlViewHost(mContext, |
| mContainerView.getDisplay(), mWallpaperSurface.getHostToken()); |
| } |
| mHost.setView(mHomeImageWallpaper, mHomeImageWallpaper.getWidth(), |
| mHomeImageWallpaper.getHeight()); |
| mWallpaperSurface.setChildSurfacePackage(mHost.getSurfacePackage()); |
| } |
| |
| @Nullable |
| public ImageView getHomeImageWallpaper() { |
| return mHomeImageWallpaper; |
| } |
| } |