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lists: derive cards-per-row from screen and card width

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The adaptive grid resolves to exactly four cards on a full-width
landscape TV pane — but a portrait-mounted or otherwise narrow TV gets
fewer columns and the hardcoded row start broke there. Compute the
count with the same arithmetic Compose uses (pane padding minus card
minimum, integer division) so the drawer-from-row-start rule tracks
the real grid on every mounting.
This commit is contained in:
Jeena 2026-10-13 23:33:06 +00:00
parent effc2bd9ae
commit 64a01d8ca2
1 changed files with 12 additions and 6 deletions
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18
app/src/main/java/net/jeena/jtubetv/ui/screens/list/VideoListScreen.kt
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@ -91,12 +91,18 @@ fun VideoListScreen(
LaunchedEffect(source) { viewModel.loadChannelHeader(AppGraph.repository) }
}
// Row starts of the 4-per-row grid: LEFT from a row's first card opens the
// drawer (issue #7). rowCardWidth() sizes the adaptive columns to resolve
// to exactly 4 on the full-width TV pane, so the row start is index % 4 —
// no layout measuring needed (measuring the first visible item instead was
// what made the full-span page header count as "one card per row").
val cardsPerRow = 4
// Row starts of the grid: LEFT from a row's first card opens the drawer
// (issue #7). The adaptive columns use a `rowCardWidth() - 12` minimum with
// zero spacing, and the content pane eats 40dp (8 start + 32 end), so the
// resolved card count is exactly Compose's arithmetic here — 4 on a full-
// width TV pane; a narrow/portrait TV gets fewer columns and keeps working.
val cardsPerRow = maxOf(
1,
(
(androidx.compose.ui.platform.LocalConfiguration.current.screenWidthDp - 40) /
(rowCardWidth().value - 12)
).toInt(),
)
if (viewModel.loadingInitial && items.isEmpty()) {
Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {