Incorrect implementation

ActionButton.kt

package academy.kt.ui.component

import androidx.compose.animation.core.FastOutSlowInEasing
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.tween
import androidx.compose.foundation.BorderStroke
import androidx.compose.foundation.background
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsHoveredAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.defaultMinSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.LinearGradientShader
import androidx.compose.ui.graphics.ShaderBrush
import androidx.compose.ui.graphics.TileMode
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

private val gradientOrangeStart = Color(0xDEFF4E18)
private val gradientOrangeEnd = Color(0x00FF4E18)
private val buttonStrokeColor = Color(0x66FF9500)

@Composable
fun ActionButton(
    text: String,
    onClick: () -> Unit,
    icon: @Composable () -> Unit = {},
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    shape: RoundedCornerShape = RoundedCornerShape(100.dp),
    contentPadding: PaddingValues = PaddingValues(horizontal = 24.dp, vertical = 16.dp),
) {
    val interactionSource = remember { MutableInteractionSource() }
    val isHovered by interactionSource.collectIsHoveredAsState()

    // Animates 0→1 on hover; gradient start/end shift right so orange expands
    val hoverProgress by animateFloatAsState(
        targetValue = if (isHovered) 1f else 0f,
        animationSpec = tween(durationMillis = 500, easing = FastOutSlowInEasing),
        label = "buttonHoverProgress",
    )

    // ShaderBrush so we get the real pixel size for the gradient offset calculation.
    // TileMode.Clamp fills the area left of startX with the first stop color (solid orange).
    val brush = object : ShaderBrush() {
        override fun createShader(size: Size) = LinearGradientShader(
            from = Offset(size.width * hoverProgress, 0f),
            to = Offset(size.width * (1f + hoverProgress), 0f),
            colors = listOf(gradientOrangeStart, gradientOrangeEnd),
            tileMode = TileMode.Clamp,
        )
    }

    Button(
        onClick = onClick,
        enabled = enabled,
        shape = shape,
        interactionSource = interactionSource,
        colors = ButtonDefaults.buttonColors(
            containerColor = Color.Transparent,
            contentColor = Color.White,
            disabledContainerColor = Color.Transparent,
            disabledContentColor = Color.White.copy(alpha = 0.38f),
        ),
        elevation = ButtonDefaults.buttonElevation(
            defaultElevation = 0.dp,
            pressedElevation = 0.dp,
            hoveredElevation = 0.dp,
            focusedElevation = 0.dp,
        ),
        border = BorderStroke(1.dp, buttonStrokeColor),
        contentPadding = contentPadding,
        modifier = modifier
            .defaultMinSize(minHeight = 56.dp)
            .background(brush, shape),
    ) {
        Row(
            horizontalArrangement = Arrangement.spacedBy(12.dp),
            verticalAlignment = Alignment.CenterVertically,
        ) {
            icon()
            Text(
                text,
                style = MaterialTheme.typography.bodyMedium,
                fontWeight = FontWeight.Bold,
            )
        }
    }
}

@Preview
@Composable
private fun ActionButtonDefaultPreview() {
    Column(
        modifier = Modifier
            .background(Color(0xFF031217))
            .padding(24.dp),
        verticalArrangement = Arrangement.spacedBy(16.dp),
    ) {
        ActionButton(text = "Adventure", onClick = {})
        ActionButton(text = "Play Again", onClick = {}, icon = { Text("🎮") })
        ActionButton(text = "Disabled", onClick = {}, enabled = false)
    }
}