Composable function for displaying text with inline clickable links (touch effect included)

HyperlinkText.kt

import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.isSpecified
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.TextLayoutResult
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.buildAnnotatedString
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.text.style.TextOverflow

@Composable
fun HyperlinkText(
    text: String,
    links: Map<String, String>,
    modifier: Modifier = Modifier,
    style: TextStyle = TextStyle.Default,
    linkStyle: SpanStyle = SpanStyle(textDecoration = TextDecoration.Underline),
    softWrap: Boolean = true,
    overflow: TextOverflow = TextOverflow.Clip,
    maxLines: Int = Int.MAX_VALUE,
    onTextLayout: (TextLayoutResult) -> Unit = {},
    onLinkClick: (String) -> Unit,
) {
    val pressed = links.values
        .associateWith {
            remember { mutableStateOf(false) }
        }
        .toMutableMap()
    val pressedColor = linkStyle.color.let { linkColor ->
        if (linkColor.isSpecified) {
            linkColor.copy(alpha = linkColor.alpha / 2f)
        } else {
            style.color.copy(alpha = style.color.alpha / 2f)
        }
    }
    val annotatedString = buildAnnotatedString {
        append(text)
        links.forEach { (linkName, link) ->
            val startIndex = text.indexOf(linkName)
            val endIndex = startIndex + linkName.length
            val linkColor = if (pressed[link]?.value == true) {
                pressedColor
            } else {
                linkStyle.color
            }
            addStyle(
                style = linkStyle.copy(
                    color = linkColor
                ),
                start = startIndex,
                end = endIndex
            )
            addStringAnnotation(
                tag = "URL",
                annotation = link,
                start = startIndex,
                end = endIndex
            )
        }
    }
    val layoutResult = remember { mutableStateOf<TextLayoutResult?>(null) }
    val pressIndicator = Modifier.pointerInput(onLinkClick) {
        detectTapGestures(
            onTap = { pos ->
                val layoutResultValue = layoutResult.value ?: return@detectTapGestures
                val offset = layoutResultValue.getOffsetForPosition(pos)
                val stringAnnotation = annotatedString
                    .getStringAnnotations("URL", offset, offset)
                    .firstOrNull() ?: return@detectTapGestures
                val link = stringAnnotation.item
                onLinkClick.invoke(link)
            },
            onPress = { pos ->
                val layoutResultValue = layoutResult.value ?: return@detectTapGestures
                val offset = layoutResultValue.getOffsetForPosition(pos)
                val stringAnnotation = annotatedString
                    .getStringAnnotations("URL", offset, offset)
                    .firstOrNull() ?: return@detectTapGestures
                val link = stringAnnotation.item
                pressed[link]?.value = true
                tryAwaitRelease()
                pressed[link]?.value = false
            }
        )
    }

    BasicText(
        text = annotatedString,
        modifier = modifier.then(pressIndicator),
        style = style,
        softWrap = softWrap,
        overflow = overflow,
        maxLines = maxLines,
        onTextLayout = {
            layoutResult.value = it
            onTextLayout(it)
        },
    )
}