Add lockedRowHeightPx state that is only updated when fully expanded
(p < 0.01f). During collapse, rowHeightPx uses the locked value instead
of recalculating from the shrinking container height, which was causing
rowH to drop from 137→0 and gridH to become 0 at p=1.0.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Calculate actual weeks needed per month and interpolate row count during
page swipe so BottomCard follows the grid height smoothly. Remove debug
println statements.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Distinguish the selected-today state from regular selection by using
primaryContainer/onPrimaryContainer instead of primary/onPrimary,
providing a softer visual treatment for the combined state.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
When swiping to a different month or week, select today if it falls
within the target period instead of always picking the 1st or Monday.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Adding .drop(1) prevents the settledPage flow from firing on initial
composition, which would override the "today" date selection.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Select the Monday of the week when WeekPager changes, and the 1st of
the month when CalendarPager changes, so the selected date always
matches the visible page.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Switch CalendarMonthPage from Column to Box with calculated y positions per row,
enabling precise height computation that aligns with CalendarMonthView's
BottomCard positioning. Simplify cardTopPx calculation by deriving grid height
from the same formula instead of tracking expandedCalendarHeightPx separately.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Non-selected rows now compress their height proportionally with
collapse progress, replacing the previous overlay-based approach.
Remove KDoc that described the old overlay behavior.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Selected row now moves up via offset + zIndex to cover other rows, which
stay in place. Collapse offset calculation excludes MonthHeader and
WeekdayHeader heights so only the grid portion is collapsed.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
When rowHeightPx is 0 (first frame), use aspectRatio-based natural
height instead of collapsing to 0.dp, preventing a visible flash.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add KDoc to all public Composable functions with parameter descriptions
- Add inline comments for non-obvious algorithms (42-cell grid, pager mapping)
- Add @Suppress reason comments for monthNumber deprecation
- Document collapseProgress range and physical meaning
- Add named constant comments for START_PAGE
- Add Preview name to App()
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Use expandedCalendarHeightPx to preserve full height during collapse animation,
and compute cardTopPx based on collapse state instead of offset arithmetic.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
ViewModel now exposes onDrag/onDragEnd so BottomCard drives the
collapse animation via detectVerticalDragGestures instead of a
discrete collapse() call. Drag maps to 0–1 progress over 200dp;
on release the animatable snaps to the nearest end with spring.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add isCollapsed/collapseProgress state to CalendarViewModel for toggling
between month and week views. CalendarMonthPage animates non-selected
weeks out with offset and alpha. Introduce WeekPager for single-week
HorizontalPager and BottomCard with drag-to-collapse gesture.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
