LockRuneString.kt

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1package com.peachpasswords.ui.components23import androidx.compose.animation.animateColorAsState4import androidx.compose.foundation.layout.Row5import androidx.compose.material3.Text6import androidx.compose.runtime.Composable7import androidx.compose.runtime.getValue8import androidx.compose.runtime.mutableIntStateOf9import androidx.compose.runtime.remember10import androidx.compose.runtime.setValue11import androidx.compose.ui.Modifier12import androidx.compose.ui.graphics.Shadow13import androidx.compose.ui.text.TextStyle14import androidx.compose.ui.text.font.FontStyle15import androidx.compose.ui.unit.sp16import com.peachpasswords.ui.theme.LocalPeachAccent17import com.peachpasswords.ui.theme.LocalReduceMotion18import com.peachpasswords.ui.theme.peachColors19import com.peachpasswords.ui.theme.PeachType20import kotlinx.coroutines.delay21import androidx.compose.runtime.LaunchedEffect22import kotlin.random.Random2324private const val RUNE_COUNT = 92526/**27 * A faint row of PeachScript runes (Private Use Area glyphs). Mirrors the28 * browser LockRuneCanvas: ~13sp, text at 12% opacity, and one rune periodically29 * picks up the accent color with a soft glow before fading back.30 */31@Composable32fun LockRuneString(modifier: Modifier = Modifier) {33    val accent = LocalPeachAccent.current34    val reduceMotion = LocalReduceMotion.current35    val runes = remember {36        (0 until RUNE_COUNT).map { (0xE000 + Random.nextInt(256)).toChar().toString() }37    }38    var glowIdx by remember { mutableIntStateOf(-1) }3940    if (!reduceMotion) {41        LaunchedEffect(Unit) {42            while (true) {43                delay(1500L + Random.nextLong(3000))44                glowIdx = Random.nextInt(RUNE_COUNT)45                delay(2000L + Random.nextLong(1500))46                glowIdx = -147            }48        }49    }5051    Row(modifier = modifier) {52        runes.forEachIndexed { idx, ch ->53            val glowing = idx == glowIdx54            val color by animateColorAsState(55                targetValue = if (glowing) accent else peachColors.T0.copy(alpha = 0.12f),56                label = "rune-glow",57            )58            Text(59                text = ch,60                color = color,61                style = TextStyle(62                    fontFamily = PeachType.Script,63                    fontStyle = FontStyle.Normal,64                    fontSize = 13.sp,65                    shadow = if (glowing) Shadow(color = accent, blurRadius = 12f) else null,66                ),67            )68        }69    }70}