Centralise the app's motion vocabulary in CalendarTransitions.kt and route
every surface through it so animation is consistent app-wide:
- Shared expand/collapse, list-item and fade-through helpers; the event-edit
expand pattern is now the shared one (no duplicate).
- Settings reminder-override rows and the reminder Custom field now expand/
collapse instead of bare-fading.
- Search and agenda rows animate (fade/relocate) via animateItem.
- Month/week/day slide and the onboarding gates honour the new helpers.
- View switching (month/week/day/agenda) now fades through instead of
snapping — lateral navigation per M3, while in-view paging keeps its slide.
Add full predictive-back support:
- enableOnBackInvokedCallback in the manifest.
- New Modifier.predictiveBack(onBack) drives the standard preview transform
(scale/shift/round) following the back gesture; applied to detail, edit,
search, settings (+ sub-screens & calendar manager via CollapsingScaffold),
the calendar editor and import — each keeping its existing back semantics.
Reduced-motion guardrail throughout: rememberReduceMotion() (reads the OS
"remove animations" setting, which Compose ignores by default) collapses
spatial motion to a quick fade and skips the back preview.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
On-device review follow-ups:
- Month widget grid is now tappable. Day numbers open that day and event
bars open the event's detail, both rooted in the month view so back
returns to the grid. Previously only the prev/next/today header
controls responded — the grid cells were never clickable.
- Pill/drawer view switches now build a visit history instead of
collapsing to the default view. Back retraces the views you moved
through (a not-yet-visited view is pushed; revisiting one collapses the
loop back to it), down to the default, then exits. Widget launches
still reset to their own view context.
Refs #1, #2 (reported by @devinside).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Replace CalendarHost's single global view slot with a top-level view
back stack rooted at a user-configurable default view. A lateral move
(pill/drawer/widget) replaces the non-home top; a date tap drills the
day view on top; a base-level BackHandler pops one level until only the
home view remains, then the system exits.
Widgets now carry their source view (EXTRA_SOURCE_VIEW) so a launch
roots the stack in that widget's view: backing out of a day/event opened
from the agenda widget returns to Agenda, and from the month widget to
Month, instead of always landing on Week. Reminder taps keep the
separate detail-key channel and leave the base view untouched.
Add a Default view setting (Settings -> Appearance) backing the stack's
home view; defaults to Week so existing users see no change.
Resolves the two Codeberg reports from @devinside:
- #1 [FR] Option to set default view
- #2 [Bug] Widget UX improvement
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
