Boxy button: a custom "raised" Compose button

BoxyButton.kt

/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * Sebastiano Poggi wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.
 * ----------------------------------------------------------------------------
 */

package dev.sebastiano.boxybutton

import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.PressInteraction
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.defaultMinSize
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
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.semantics.Role
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.compose.ui.window.singleWindowApplication

fun main() = singleWindowApplication {
    Box(
        Modifier.fillMaxSize().background(Color.White).padding(16.dp),
        contentAlignment = Alignment.Center,
    ) {
        BoxyButton() {
            BasicText(
                "Click meeeeee",
                style =
                    TextStyle(
                        color = Color(0xFF4E0D72),
                        fontWeight = FontWeight.Medium,
                        fontSize = 16.sp,
                    ),
            )
        }
    }
}

@Composable
fun BoxyButton(modifier: Modifier = Modifier, content: @Composable () -> Unit) {
    val interactionSource = remember { MutableInteractionSource() }
    var isPressed by remember { mutableStateOf(false) }

    LaunchedEffect(interactionSource) {
        interactionSource.interactions.collect { interaction ->
            isPressed =
                when (interaction) {
                    is PressInteraction.Press -> true
                    else -> false
                }
        }
    }

    val topPadding = if (isPressed) 8.dp else 4.dp
    val bottomPadding = if (isPressed) 4.dp else 8.dp

    Box(
        modifier
            .background(Color(0xFF4E0D72), RoundedCornerShape(16.dp))
            .padding(start = 4.dp, top = topPadding, end = 4.dp, bottom = bottomPadding)
            .clickable(
                onClick = { println("clicked") },
                indication = null,
                interactionSource = interactionSource,
                role = Role.Button,
            )
    ) {
        Box(
            Modifier.background(Color(0xFFF7FEEC), RoundedCornerShape(12.dp))
                .defaultMinSize(minWidth = 72.dp, minHeight = 48.dp)
                .padding(horizontal = 32.dp, vertical = 12.dp),
            contentAlignment = Alignment.Center,
        ) {
            content()
        }
    }
}

This looks like this:

Screen.Recording.2024-12-07.at.16.16.35.mov