Makussu/subtracks
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drive the tab label collapse and expansion from one transition

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austinried
2026-10-04 00:29:57 +00:00
parent 94a0326b4e
commit 25d2e150e7
1 changed files with 8 additions and 6 deletions
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app/src/main/kotlin/com/subtracks/ui/library/LibraryScreen.kt
+8 -6
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@@ -618,14 +618,13 @@ private fun LibraryTabs(
onOpenSettings: () -> Unit, onOpenSettings: () -> Unit,
artwork: ArtworkColors?, artwork: ArtworkColors?,
) { ) {
val iconHoldStart = 0.25f
val iconFadeEnd = 0.65f
val indicatorStretch = 18.dp val indicatorStretch = 18.dp
val density = LocalDensity.current val density = LocalDensity.current
val bounds = remember { mutableStateMapOf<Int, Rect>() } val bounds = remember { mutableStateMapOf<Int, Rect>() }
val page = pagerState.currentPage val page = pagerState.currentPage
val fraction = pagerState.currentPageOffsetFraction val fraction = pagerState.currentPageOffsetFraction
val position = page + fraction val raw = abs(fraction).coerceIn(0f, 1f)
val transition = raw * raw * (3f - 2f * raw)
Box( Box(
Modifier Modifier
@@ -634,7 +633,7 @@ private fun LibraryTabs(
) { ) {
bounds[page]?.let { current -> bounds[page]?.let { current ->
val neighbour = bounds[if (fraction >= 0f) page + 1 else page - 1] val neighbour = bounds[if (fraction >= 0f) page + 1 else page - 1]
val step = if (neighbour != null) abs(fraction) else 0f val step = if (neighbour != null) transition else 0f
val left = current.left + ((neighbour?.left ?: current.left) - current.left) * step val left = current.left + ((neighbour?.left ?: current.left) - current.left) * step
val right = current.right + ((neighbour?.right ?: current.right) - current.right) * step val right = current.right + ((neighbour?.right ?: current.right) - current.right) * step
val stretch = with(density) { indicatorStretch.toPx() } * step val stretch = with(density) { indicatorStretch.toPx() } * step
@@ -663,8 +662,11 @@ private fun LibraryTabs(
tab = tab, tab = tab,
artwork = artwork, artwork = artwork,
progress = progress =
((iconFadeEnd - abs(position - index)) / (iconFadeEnd - iconHoldStart)) when (index) {
.coerceIn(0f, 1f), page -> 1f - transition
page + (if (fraction >= 0f) 1 else -1) -> transition
else -> 0f
},
onClick = { onTabSelected(tab) }, onClick = { onTabSelected(tab) },
modifier = modifier =
Modifier.onGloballyPositioned { coordinates -> Modifier.onGloballyPositioned { coordinates ->