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Commit 5777750c authored by Santiago Etchebehere's avatar Santiago Etchebehere
Browse files

Fallback to static thumbnail for Live Wallpapers 

When WallpaperEngine scalePreview API is not available, use a static
thumbnail for live wallpapers instead of crashing.

Also refactor to extract a single WallpaperSurfaceCallback to make this
simpler.

Bug: 12329489
Change-Id: I7eebcab38a619cb65de9926fe3f956f069652b57
parent 8bd5f4bd

src/com/android/customization/picker/WallpaperPreviewer.java

+42 −78
Original line number Diff line number Diff line
@@ -15,9 +15,6 @@ 
 */

package com.android.customization.picker;



import static android.view.View.MeasureSpec.EXACTLY;

import static android.view.View.MeasureSpec.makeMeasureSpec;



import android.app.Activity;

import android.app.WallpaperColors;

import android.content.Intent;
@@ -25,8 +22,6 @@ import android.graphics.Rect; 
import android.graphics.RectF;

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.view.ViewGroup;
@@ -35,7 +30,6 @@ import android.widget.ImageView; 
import androidx.annotation.MainThread;

import androidx.annotation.Nullable;

import androidx.cardview.widget.CardView;

import androidx.core.content.ContextCompat;

import androidx.lifecycle.Lifecycle;

import androidx.lifecycle.LifecycleObserver;

import androidx.lifecycle.OnLifecycleEvent;
@@ -47,6 +41,7 @@ import com.android.wallpaper.util.ScreenSizeCalculator; 
import com.android.wallpaper.util.SizeCalculator;

import com.android.wallpaper.util.WallpaperConnection;

import com.android.wallpaper.util.WallpaperConnection.WallpaperConnectionListener;

import com.android.wallpaper.util.WallpaperSurfaceCallback;

import com.android.wallpaper.widget.LiveTileOverlay;

import com.android.wallpaper.widget.WallpaperColorsLoader;
@@ -60,14 +55,10 @@ public class WallpaperPreviewer implements LifecycleObserver { 
    private final Activity mActivity;

    private final ImageView mHomePreview;

    private final SurfaceView mWallpaperSurface;

    private final WallpaperSurfaceCallback mWallpaperSurfaceCallback =

            new WallpaperSurfaceCallback();



    private WallpaperSurfaceCallback mWallpaperSurfaceCallback;

    private WallpaperInfo mWallpaper;

    private WallpaperConnection mWallpaperConnection;

    // Home workspace surface is behind the app window, and so must the home image wallpaper like

    // the live wallpaper. This view is rendered on mWallpaperSurface for home image wallpaper.

    private ImageView mHomeImageWallpaper;

    @Nullable private WallpaperColorsListener mWallpaperColorsListener;



    /** Interface for getting {@link WallpaperColors} from wallpaper. */
@@ -83,6 +74,8 @@ public class WallpaperPreviewer implements LifecycleObserver { 
        mActivity = activity;

        mHomePreview = homePreview;

        mWallpaperSurface = wallpaperSurface;

        mWallpaperSurfaceCallback = new WallpaperSurfaceCallback(activity, mHomePreview,

                mWallpaperSurface, this::setUpWallpaperPreview);

        mWallpaperSurface.setZOrderMediaOverlay(false);

        mWallpaperSurface.getHolder().addCallback(mWallpaperSurfaceCallback);
@@ -153,18 +146,19 @@ public class WallpaperPreviewer implements LifecycleObserver { 
    }



    private void setUpWallpaperPreview() {

        if (mWallpaper != null && mHomeImageWallpaper != null) {

        ImageView homeImageWallpaper = mWallpaperSurfaceCallback.getHomeImageWallpaper();

        if (mWallpaper != null && homeImageWallpaper != null) {

            boolean renderInImageWallpaperSurface = !(mWallpaper instanceof LiveWallpaperInfo);

            mWallpaper.getThumbAsset(mActivity.getApplicationContext())

                    .loadPreviewImage(mActivity,

                            renderInImageWallpaperSurface ? mHomeImageWallpaper : mHomePreview,

                            renderInImageWallpaperSurface ? homeImageWallpaper : mHomePreview,

                            mActivity.getResources().getColor(R.color.secondary_color));

            LiveTileOverlay.INSTANCE.detach(mHomePreview.getOverlay());

            if (mWallpaper instanceof LiveWallpaperInfo) {

                mWallpaper.getThumbAsset(mActivity.getApplicationContext())

                        .loadPreviewImage(

                                mActivity,

                                mHomeImageWallpaper,

                                homeImageWallpaper,

                                mActivity.getColor(R.color.secondary_color));

                setUpLiveWallpaperPreview(mWallpaper);

            } else {
@@ -193,7 +187,7 @@ public class WallpaperPreviewer implements LifecycleObserver { 
        if (mWallpaperConnection != null) {

            mWallpaperConnection.disconnect();

        }



        if (WallpaperConnection.isPreviewAvailable()) {

            mHomePreview.getLocationOnScreen(mLivePreviewLocation);

            mPreviewGlobalRect.set(0, 0, mHomePreview.getMeasuredWidth(),

                    mHomePreview.getMeasuredHeight());
@@ -204,7 +198,8 @@ public class WallpaperPreviewer implements LifecycleObserver { 
                    getWallpaperIntent(homeWallpaper.getWallpaperComponent()), mActivity,

                    new WallpaperConnectionListener() {

                        @Override

                    public void onWallpaperColorsChanged(WallpaperColors colors, int displayId) {

                        public void onWallpaperColorsChanged(WallpaperColors colors,

                                int displayId) {

                            if (mWallpaperColorsListener != null) {

                                mWallpaperColorsListener.onWallpaperColorsChanged(colors);

                            }
@@ -221,6 +216,15 @@ public class WallpaperPreviewer implements LifecycleObserver { 
                    LiveTileOverlay.INSTANCE.detach(mHomePreview.getOverlay());

                }

            });

        } else {

            // Load wallpaper color from the thumbnail.

            if (mWallpaperColorsListener != null) {

                WallpaperColorsLoader.getWallpaperColors(

                        mActivity,

                        mWallpaper.getThumbAsset(mActivity),

                        mWallpaperColorsListener::onWallpaperColorsChanged);

            }

        }

    }



    /** Updates the preview card view corner radius to match the device corner radius. */
@@ -239,44 +243,4 @@ public class WallpaperPreviewer implements LifecycleObserver { 
        return new Intent(WallpaperService.SERVICE_INTERFACE)

                .setClassName(info.getPackageName(), info.getServiceName());

    }



    private class WallpaperSurfaceCallback implements SurfaceHolder.Callback {



        private Surface mLastSurface;

        private SurfaceControlViewHost mHost;



        @Override

        public void surfaceCreated(SurfaceHolder holder) {

            if (mLastSurface != holder.getSurface()) {

                mLastSurface = holder.getSurface();

                mHomeImageWallpaper = new ImageView(mActivity);

                mHomeImageWallpaper.setBackgroundColor(

                        ContextCompat.getColor(mActivity, R.color.primary_color));

                mHomeImageWallpaper.measure(makeMeasureSpec(mHomePreview.getWidth(), EXACTLY),

                        makeMeasureSpec(mHomePreview.getHeight(), EXACTLY));

                mHomeImageWallpaper.layout(0, 0, mHomePreview.getWidth(), mHomePreview.getHeight());



                cleanUp();

                mHost = new SurfaceControlViewHost(mActivity,

                        mActivity.getDisplay(), mWallpaperSurface.getHostToken());

                mHost.setView(mHomeImageWallpaper, mHomeImageWallpaper.getWidth(),

                        mHomeImageWallpaper.getHeight());

                mWallpaperSurface.setChildSurfacePackage(mHost.getSurfacePackage());

            }

            setUpWallpaperPreview();

        }



        @Override

        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {}



        @Override

        public void surfaceDestroyed(SurfaceHolder holder) {}



        public void cleanUp() {

            if (mHost != null) {

                mHost.release();

                mHost = null;

            }

        }

    }

}