ScreenSizeDemo.kt

package com.composables.composetheme.samples

import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.layout.widthIn
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.Icon
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.outlined.Star
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.movableContentOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.unit.dp
import coil3.compose.AsyncImage
import com.composables.composetheme.ComposeTheme
import com.composables.composetheme.base
import com.composables.composetheme.buildComposeTheme
import com.composables.composetheme.colors
import com.composables.composetheme.currentHorizontalSizeClass
import com.composables.composetheme.gray400
import com.composables.composetheme.gray900
import com.composables.composetheme.large
import com.composables.composetheme.medium
import com.composables.composetheme.onHorizontalSize
import com.composables.composetheme.purple500
import com.composables.composetheme.screenSizes
import com.composables.composetheme.sm
import com.composables.composetheme.small
import com.composables.composetheme.textStyles

private val ScreenTheme = buildComposeTheme {}

@Composable
fun ScreenSizeDemo() {
    ScreenTheme {
        val horizontal = currentHorizontalSizeClass
        LaunchedEffect(horizontal) {
            println("Horizontal is now $horizontal")
        }

        @Composable
        fun Flex(
            orientation: Orientation = Orientation.Horizontal,
            modifier: Modifier = Modifier,
            arrangement: Arrangement.HorizontalOrVertical = Arrangement.Center,
            content: @Composable () -> Unit
        ) {
            val movableContent = movableContentOf(content)

            if (orientation == Orientation.Horizontal) {
                Row(modifier = modifier, horizontalArrangement = arrangement) {
                    movableContent()
                }
            } else {
                Column(modifier = modifier, verticalArrangement = arrangement) {
                    movableContent()
                }
            }
        }

        Box(
            modifier = Modifier.background(Color.White).fillMaxSize().verticalScroll(rememberScrollState()),
            contentAlignment = Alignment.TopCenter

        ) {
            Flex(
                modifier = Modifier
                    .widthIn(max = 1200.dp)
                    .padding(vertical = 24.dp, horizontal = 16.dp)
                    .fillMaxSize(),
                arrangement = Arrangement.spacedBy(12.dp),
                orientation = if (currentHorizontalSizeClass.minWidth >= ComposeTheme.screenSizes.large.minWidth) Orientation.Horizontal else Orientation.Vertical,
            ) {
                @Composable
                fun Header(modifier: Modifier = Modifier, useScrim: Boolean = false) {
                    Column(
                        modifier = Modifier
                            .let {
                                if (useScrim) it.background(
                                    Brush.verticalGradient(listOf(Color.Transparent, Color.Black.copy(0.7f))),
                                    RoundedCornerShape(8.dp)
                                ) else it
                            }.then(modifier),
                        verticalArrangement = Arrangement.spacedBy(8.dp)
                    ) {
                        BasicText(
                            text = "Entire House",
                            style = ComposeTheme.textStyles.sm.copy(color = if (useScrim) Color.White else Color.Unspecified)
                        )
                        BasicText(
                            text = "Beach House in Collingwood",
                            style = ComposeTheme.textStyles.base.copy(color = if (useScrim) Color.White else Color.Unspecified)
                        )
                    }
                }

                // images
                Box(Modifier.onHorizontalSize(ComposeTheme.screenSizes.large) { it.width(560.dp) }) {
                    Flex(
                        modifier = Modifier.fillMaxWidth(),
                        arrangement = Arrangement.spacedBy(4.dp),
                        orientation = if (currentHorizontalSizeClass.minWidth >= ComposeTheme.screenSizes.large.minWidth) Orientation.Vertical else Orientation.Horizontal,
                    ) {
                        AsyncImage(
                            model = "https://plus.unsplash.com/premium_photo-1661962841993-99a07c27c9f4?q=80&w=3431&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D",
                            contentScale = ContentScale.Crop,
                            contentDescription = null,
                            modifier = Modifier.clip(RoundedCornerShape(8.dp))
                                .onHorizontalSize(ComposeTheme.screenSizes.large) { it.fillMaxWidth(1f) }
                                .onHorizontalSize(ComposeTheme.screenSizes.small) { it.fillMaxWidth(0.5f) }
                                .fillMaxWidth()
                                .height(240.dp)
                        )

                        if (currentHorizontalSizeClass.minWidth >= ComposeTheme.screenSizes.small.minWidth) {
                            Row(
                                modifier = Modifier.fillMaxWidth(1f),
                                horizontalArrangement = Arrangement.spacedBy(4.dp)
                            ) {
                                AsyncImage(
                                    model = "https://images.unsplash.com/photo-1511840831832-3efd661c1d0f?q=80&w=2048&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D",
                                    contentScale = ContentScale.Crop,
                                    contentDescription = null,
                                    modifier = Modifier.clip(RoundedCornerShape(8.dp))
                                        .weight(1f)
                                        .height(240.dp)
                                )
                                if (currentHorizontalSizeClass.minWidth >= ComposeTheme.screenSizes.medium.minWidth) {
                                    AsyncImage(
                                        model = "https://images.unsplash.com/photo-1506079478915-3f458c5077a7?q=80&w=3387&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D",
                                        contentScale = ContentScale.Crop,
                                        contentDescription = null,
                                        modifier = Modifier.clip(RoundedCornerShape(8.dp))
                                            .weight(1f)
                                            .height(240.dp)
                                    )
                                }
                            }
                        }
                    }
                    if (currentHorizontalSizeClass.minWidth < ComposeTheme.screenSizes.small.minWidth) {
                        Header(Modifier.align(Alignment.BottomCenter).fillMaxWidth().padding(12.dp), useScrim = true)
                    }
                }

                Box(
                    Modifier
                        .fillMaxWidth()
                        .align(Alignment.TopCenter),
                    contentAlignment = Alignment.TopCenter
                ) {
                    Column(
                        verticalArrangement = Arrangement.spacedBy(12.dp),
                        modifier = Modifier
                            .onHorizontalSize(ComposeTheme.screenSizes.large) {
                                it.widthIn(max = 540.dp)
                            }
                    ) {
                        if (currentHorizontalSizeClass.minWidth >= ComposeTheme.screenSizes.small.minWidth) {
                            Header(Modifier.fillMaxWidth())
                        }

                        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(top = 4.dp)) {
                            Row(
                                horizontalArrangement = Arrangement.spacedBy(4.dp),
                                verticalAlignment = Alignment.CenterVertically
                            ) {
                                Icon(
                                    Icons.Outlined.Star,
                                    contentDescription = null,
                                    modifier = Modifier.padding(end = 4.dp),
                                    tint = ComposeTheme.colors.purple500
                                )
                                BasicText(
                                    text = "4.89",
                                    style = ComposeTheme.textStyles.base.copy(color = ComposeTheme.colors.gray900)
                                )
                                BasicText(
                                    text = "(128)",
                                    style = ComposeTheme.textStyles.base.copy(color = ComposeTheme.colors.gray400)
                                )
                            }
                        }

                        Box(
                            Modifier.clip(RoundedCornerShape(8.dp))
                                .clickable { /* TODO */ }
                                .background(ComposeTheme.colors.purple500)
                                .padding(vertical = 12.dp, horizontal = 16.dp)
                        ) {
                            BasicText(
                                "Check availability",
                                style = ComposeTheme.textStyles.base.copy(color = Color.White)
                            )
                        }

                        BasicText(
                            text = "This sunny and spacious room is for those traveling light and looking for a comfy and cosy place to lay their head for a night or two. This beach house sits in a vibrant neighborhood littered with cafes, pubs, restaurants and supermarkets and is close to all the major attractions such as Edinburgh Castle and Arthur's Seat.",
                            style = ComposeTheme.textStyles.base
                        )
                    }
                }
            }
        }
    }
}