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MangaSummary: Refactor to not use SubcomposeLayout (#10008)

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Ivan Iskandar 2023-10-14 21:52:04 +07:00 committed by GitHub
parent c492efcb31
commit 0026f96fad
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1 changed files with 55 additions and 54 deletions
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109
app/src/main/java/eu/kanade/presentation/manga/components/MangaInfoHeader.kt
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@ -48,7 +48,6 @@ import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
@ -63,9 +62,8 @@ import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.layout.SubcomposeLayout
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.res.pluralStringResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.style.TextAlign
@ -589,67 +587,70 @@ private fun MangaSummary(
expanded: Boolean,
modifier: Modifier = Modifier,
) {
var expandedHeight by remember { mutableIntStateOf(0) }
var shrunkHeight by remember { mutableIntStateOf(0) }
val heightDelta = remember(expandedHeight, shrunkHeight) { expandedHeight - shrunkHeight }
val animProgress by animateFloatAsState(if (expanded) 1f else 0f)
val scrimHeight = with(LocalDensity.current) { remember { 24.sp.roundToPx() } }
SubcomposeLayout(modifier = modifier.clipToBounds()) { constraints ->
val shrunkPlaceable = subcompose("description-s") {
Text(
text = "\n\n", // Shows at least 3 lines
style = MaterialTheme.typography.bodyMedium,
)
}.map { it.measure(constraints) }
shrunkHeight = shrunkPlaceable.maxByOrNull { it.height }?.height ?: 0
val expandedPlaceable = subcompose("description-l") {
Text(
text = expandedDescription,
style = MaterialTheme.typography.bodyMedium,
)
}.map { it.measure(constraints) }
expandedHeight = expandedPlaceable.maxByOrNull { it.height }?.height?.coerceAtLeast(shrunkHeight) ?: 0
val actualPlaceable = subcompose("description") {
SelectionContainer {
Layout(
modifier = modifier.clipToBounds(),
contents = listOf(
{
Text(
text = if (expanded) expandedDescription else shrunkDescription,
maxLines = Int.MAX_VALUE,
text = "\n\n", // Shows at least 3 lines
style = MaterialTheme.typography.bodyMedium,
color = MaterialTheme.colorScheme.onBackground,
modifier = Modifier.secondaryItemAlpha(),
)
}
}.map { it.measure(constraints) }
},
{
Text(
text = expandedDescription,
style = MaterialTheme.typography.bodyMedium,
)
},
{
SelectionContainer {
Text(
text = if (expanded) expandedDescription else shrunkDescription,
maxLines = Int.MAX_VALUE,
style = MaterialTheme.typography.bodyMedium,
color = MaterialTheme.colorScheme.onBackground,
modifier = Modifier.secondaryItemAlpha(),
)
}
},
{
val colors = listOf(Color.Transparent, MaterialTheme.colorScheme.background)
Box(
modifier = Modifier.background(Brush.verticalGradient(colors = colors)),
contentAlignment = Alignment.Center,
) {
val image = AnimatedImageVector.animatedVectorResource(R.drawable.anim_caret_down)
Icon(
painter = rememberAnimatedVectorPainter(image, !expanded),
contentDescription = stringResource(if (expanded) R.string.manga_info_collapse else R.string.manga_info_expand),
tint = MaterialTheme.colorScheme.onBackground,
modifier = Modifier.background(Brush.radialGradient(colors = colors.asReversed())),
)
}
},
),
) { (shrunk, expanded, actual, scrim), constraints ->
val shrunkHeight = shrunk.single()
.measure(constraints)
.height
val expandedHeight = expanded.single()
.measure(constraints)
.height
val heightDelta = expandedHeight - shrunkHeight
val scrimHeight = 24.dp.roundToPx()
val scrimPlaceable = subcompose("scrim") {
val colors = listOf(Color.Transparent, MaterialTheme.colorScheme.background)
Box(
modifier = Modifier.background(Brush.verticalGradient(colors = colors)),
contentAlignment = Alignment.Center,
) {
val image = AnimatedImageVector.animatedVectorResource(R.drawable.anim_caret_down)
Icon(
painter = rememberAnimatedVectorPainter(image, !expanded),
contentDescription = stringResource(if (expanded) R.string.manga_info_collapse else R.string.manga_info_expand),
tint = MaterialTheme.colorScheme.onBackground,
modifier = Modifier.background(Brush.radialGradient(colors = colors.asReversed())),
)
}
}.map { it.measure(Constraints.fixed(width = constraints.maxWidth, height = scrimHeight)) }
val actualPlaceable = actual.single()
.measure(constraints)
val scrimPlaceable = scrim.single()
.measure(Constraints.fixed(width = constraints.maxWidth, height = scrimHeight))
val currentHeight = shrunkHeight + ((heightDelta + scrimHeight) * animProgress).roundToInt()
layout(constraints.maxWidth, currentHeight) {
actualPlaceable.forEach {
it.place(0, 0)
}
actualPlaceable.place(0, 0)
val scrimY = currentHeight - scrimHeight
scrimPlaceable.forEach {
it.place(0, scrimY)
}
scrimPlaceable.place(0, scrimY)
}
}
}