Reduce surface size when allocating intercept layer

import android.app.TaskInfo

import android.content.Context

import android.graphics.PixelFormat

import android.graphics.Rect

import android.graphics.Region

import android.os.Binder

import android.view.SurfaceControl

import android.view.SurfaceControlViewHost

import android.view.View

import android.view.ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION

import android.view.WindowManager

import android.view.WindowlessWindowManager

import java.lang.Integer.MAX_VALUE

/**

 * Manages a touchable surface that is intended to intercept touches.

    ) {

        rootView = View(context.createConfigurationContext(rootTaskInfo.configuration))

        // Set WM flags, tokens, and sizing on the touchable view. It will be the same size as its

        // parent

        // TODO (b/349828130): It's a bit wasteful to have the touch zone cover the whole app

        //  surface, even extending offscreen (keeps buffer active in memory), so can trim it down

        //  to the visible onscreen area in a future patch.

        // Set WM flags, tokens, and sizing on the touchable view. Create the smallest sized surface

        // possible for performance reasons. We don't use MATCH_PARENT here because there isn't

        // actually a parent (like in normal windows) to resolve a size from, and can result in

        // an empty input region in the future.

        val lp = WindowManager.LayoutParams(

            rootTaskInfo.configuration.windowConfiguration.bounds.width(),

            rootTaskInfo.configuration.windowConfiguration.bounds.height(),

            1, 1,

            WindowManager.LayoutParams.TYPE_INPUT_CONSUMER,

            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,

            PixelFormat.TRANSPARENT

        rootView?.setWillNotDraw(true)

        rootView?.parent?.requestTransparentRegion(rootView)

        // Workaround for ensuring that we receive touches outside the bounds of the surface (input

        // currently uses the touchable region to determine if the window should receive events).

        // TODO(b/433258252): We can revert to using the full root bounds when there is a way to

        //                    declare that we don't want a buffer

        wwm.setInsets(viewHost!!.windowToken, TOUCHABLE_INSETS_REGION, Rect(), Rect(),

            Region(-MAX_VALUE / 2, -MAX_VALUE / 2, MAX_VALUE / 2, MAX_VALUE / 2))

        // Create a transaction so that we can activate and reposition our surface.

        val t = SurfaceControl.Transaction()

        // Set layer to maximum. We want this surface to be above the app layer, or else touches