Merge "Fade in grid preview" into ub-launcher3-rvc-dev

import android.view.Display;

import android.view.SurfaceControlViewHost;

import android.view.View;

import android.view.animation.AccelerateDecelerateInterpolator;

import com.android.launcher3.InvariantDeviceProfile;

/** Render preview using surface view. */

public class PreviewSurfaceRenderer implements IBinder.DeathRecipient {

    private static final int FADE_IN_ANIMATION_DURATION = 200;

    private static final String KEY_HOST_TOKEN = "host_token";

    private static final String KEY_VIEW_WIDTH = "width";

    private static final String KEY_VIEW_HEIGHT = "height";

            view.setPivotY(0);

            view.setTranslationX((mWidth - scale * view.getWidth()) / 2);

            view.setTranslationY((mHeight - scale * view.getHeight()) / 2);

            view.setAlpha(0);

            view.animate().alpha(1)

                    .setInterpolator(new AccelerateDecelerateInterpolator())

                    .setDuration(FADE_IN_ANIMATION_DURATION)

                    .start();

            mSurfaceControlViewHost.setView(view, view.getMeasuredWidth(),

                    view.getMeasuredHeight());

        });