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import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.drawscope.DrawScope
import androidx.compose.ui.graphics.painter.Painter
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.unit.dp
import org.jetbrains.compose.resources.ExperimentalResourceApi
import org.jetbrains.compose.resources.painterResource
@Composable
internal inline fun Messages(messages: List<Message>) {
val listState = rememberLazyListState()
if (messages.isNotEmpty()) {
LaunchedEffect(messages.last()) {
listState.animateScrollToItem(messages.lastIndex, scrollOffset = 2)
}
}
LazyColumn(
modifier = Modifier.fillMaxSize().padding(start = 4.dp, end = 4.dp),
verticalArrangement = Arrangement.spacedBy(8.dp),
state = listState,
) {
item { Spacer(Modifier.size(20.dp)) }
items(messages, key = { it.id }) {
ChatMessage(isMyMessage = it.user == myUser, it)
}
item {
Box(Modifier.height(70.dp))
}
}
}
@OptIn(ExperimentalResourceApi::class)
@Composable
fun UserPic(user: User) {
val imageSize = 48f
val painter = user.picture?.let {
painterResource(it)
} ?: object : Painter() {
override val intrinsicSize: Size = Size(imageSize, imageSize)
override fun DrawScope.onDraw() {
drawRect(user.color, size = Size(imageSize * 4, imageSize * 4))
}
}
Image(
modifier = Modifier
.size(imageSize.dp)
.clip(CircleShape),
contentScale = ContentScale.Crop,
painter = painter,
contentDescription = "User picture"
)
}