Merge "[Unfold animation] Move unfold animation background under wallpaper" into udc-dev

    @WMSingleton

    @Provides

    static UnfoldBackgroundController provideUnfoldBackgroundController(

            RootTaskDisplayAreaOrganizer rootTaskDisplayAreaOrganizer,

            Context context

    ) {

        return new UnfoldBackgroundController(

                context,

                rootTaskDisplayAreaOrganizer

        );

    static UnfoldBackgroundController provideUnfoldBackgroundController(Context context) {

        return new UnfoldBackgroundController(context);

    }

    //

import static android.graphics.Color.blue;

import static android.graphics.Color.green;

import static android.graphics.Color.red;

import static android.view.Display.DEFAULT_DISPLAY;

import android.annotation.NonNull;

import android.content.Context;

import android.view.SurfaceControl;

import com.android.wm.shell.R;

import com.android.wm.shell.RootTaskDisplayAreaOrganizer;

/**

 * Controls background color layer for the unfold animations

public class UnfoldBackgroundController {

    private static final int BACKGROUND_LAYER_Z_INDEX = -1;

    private final RootTaskDisplayAreaOrganizer mRootTaskDisplayAreaOrganizer;

    private final float[] mBackgroundColor;

    private SurfaceControl mBackgroundLayer;

    public UnfoldBackgroundController(

            @NonNull Context context,

            @NonNull RootTaskDisplayAreaOrganizer rootTaskDisplayAreaOrganizer) {

        mRootTaskDisplayAreaOrganizer = rootTaskDisplayAreaOrganizer;

    public UnfoldBackgroundController(@NonNull Context context) {

        mBackgroundColor = getBackgroundColor(context);

    }

                .setName("app-unfold-background")

                .setCallsite("AppUnfoldTransitionController")

                .setColorLayer();

        mRootTaskDisplayAreaOrganizer.attachToDisplayArea(DEFAULT_DISPLAY, colorLayerBuilder);

        mBackgroundLayer = colorLayerBuilder.build();

        transaction