Merge "Remove grey bar in communal container" into main

package com.android.systemui.communal.ui.compose

import androidx.compose.animation.core.tween

import androidx.compose.foundation.background

import androidx.compose.foundation.layout.Arrangement

import androidx.compose.foundation.layout.Box

import androidx.compose.foundation.layout.Column

import androidx.compose.foundation.layout.fillMaxHeight

import androidx.compose.foundation.layout.fillMaxSize

import androidx.compose.foundation.layout.width

import androidx.compose.material.icons.Icons

import androidx.compose.material.icons.filled.Close

import androidx.compose.material3.Icon

import androidx.compose.material3.IconButton

import androidx.compose.runtime.Composable

import androidx.compose.runtime.DisposableEffect

import androidx.compose.runtime.collectAsState

import androidx.compose.runtime.getValue

import androidx.compose.runtime.mutableStateOf

import androidx.compose.runtime.remember

import androidx.compose.runtime.setValue

import androidx.compose.ui.Alignment

import androidx.compose.ui.Modifier

import androidx.compose.ui.graphics.Color

import androidx.compose.ui.unit.dp

import com.android.compose.animation.scene.Edge

import com.android.compose.animation.scene.ElementKey

    // shade, which can be opened from many locations.

    val isKeyguardShowing by viewModel.isKeyguardVisible.collectAsState(initial = false)

    // Failsafe to hide the whole SceneTransitionLayout in case of bugginess.

    var showSceneTransitionLayout by remember { mutableStateOf(true) }

    if (!showSceneTransitionLayout || !isKeyguardShowing) {

    if (!isKeyguardShowing) {

        return

    }

                    Swipe(SwipeDirection.Left, fromEdge = Edge.Right) to TransitionSceneKey.Communal

                )

        ) {

            BlankScene { showSceneTransitionLayout = false }

            // This scene shows nothing only allowing for transitions to the communal scene.

            Box(modifier = Modifier.fillMaxSize())

        }

        scene(

    }

}

/**

 * Blank scene that shows over keyguard/dream. This scene will eventually show nothing at all and is

 * only used to allow for transitions to the communal scene.

 */

@Composable

private fun BlankScene(

    modifier: Modifier = Modifier,

    hideSceneTransitionLayout: () -> Unit,

) {

    Box(modifier.fillMaxSize()) {

        Column(

            Modifier.fillMaxHeight()

                .width(ContainerDimensions.EdgeSwipeSize)

                .align(Alignment.CenterEnd)

                .background(Color(0x55e9f2eb)),

            verticalArrangement = Arrangement.Center,

            horizontalAlignment = Alignment.CenterHorizontally

        ) {

            IconButton(onClick = hideSceneTransitionLayout) {

                Icon(Icons.Filled.Close, contentDescription = "Close button")

            }

        }

    }

}

/** Scene containing the glanceable hub UI. */

@Composable

private fun SceneScope.CommunalScene(