release: cut v2.2.0 — tap-to-create + local calendar management

Day/week: tap an empty slot to open the create form prefilled with that
day and the tapped hour (snapped to the hour, 1 h long). Threaded a start
time through CalendarHost → EventEditScreen → openNew; the FAB keeps its
default.

Local calendars: a full-screen editor from Settings → Calendars to
create/rename/recolor/delete device-only calendars (ACCOUNT_TYPE_LOCAL,
sync-adapter insert) with name, pastel-previewed colour, and a description
(stored in CAL_SYNC1). Synced calendars are listed read-only grouped by
account, each with a "manage in source app" deep-link resolved from the
account's own authenticator (DAVx5/ICSx5/…), plus an add-account shortcut;
a <queries> block makes the source apps launchable. Extracted a shared
InlineTextField into ui.common so the event form and calendar editor share
one borderless input style.

Tests: repository delegation + write-failure, mapper isLocal/description,
fake data source extended. Version bumped to 2.2.0 / 20200.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarDataSource.kt

@@ -6,6 +6,7 @@ import android.content.ContentValues
 import android.content.Context
 import android.database.ContentObserver
 import android.database.Cursor
+import android.net.Uri
 import android.os.Handler
 import android.os.Looper
 import android.provider.CalendarContract
@@ -36,6 +37,19 @@ interface CalendarDataSource {
     fun instances(beginMillis: Long, endMillis: Long): List<EventInstance>
     fun eventDetail(eventId: Long): EventDetail?
 
+    /**
+     * Create a new device-only (`ACCOUNT_TYPE_LOCAL`) calendar the app owns;
+     * returns its `Calendars._ID`. Inserted through the sync-adapter URI so the
+     * provider keeps the row (a plain insert is rejected for the LOCAL account).
+     */
+    fun createLocalCalendar(displayName: String, color: Int, description: String?): Long
+
+    /** Update name, color and description of a local calendar the app owns. */
+    fun updateCalendar(id: Long, displayName: String, color: Int, description: String?)
+
+    /** Permanently delete a local calendar the app owns, with all its events. */
+    fun deleteCalendar(id: Long)
+
     /** Insert a new event; returns the new `Events._ID`. */
     fun insertEvent(form: EventForm): Long
 
@@ -105,6 +119,76 @@ class AndroidCalendarDataSource @Inject constructor(
         CalendarContract.Calendars.CALENDAR_DISPLAY_NAME + " ASC",
     )?.use { it.mapAll(::toCalendarSource) } ?: emptyList()
 
+    /**
+     * Calendar-row writes must address the provider as a sync adapter and name
+     * the account in the URI; otherwise inserts/deletes for the LOCAL account
+     * are silently dropped or only soft-deleted.
+     */
+    private fun localCalendarsUri(): Uri = CalendarContract.Calendars.CONTENT_URI.buildUpon()
+        .appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, "true")
+        .appendQueryParameter(CalendarContract.Calendars.ACCOUNT_NAME, LOCAL_ACCOUNT_NAME)
+        .appendQueryParameter(
+            CalendarContract.Calendars.ACCOUNT_TYPE,
+            CalendarContract.ACCOUNT_TYPE_LOCAL,
+        )
+        .build()
+
+    override fun createLocalCalendar(displayName: String, color: Int, description: String?): Long {
+        val name = displayName.trim().ifEmpty { Fallbacks.UNNAMED_CALENDAR }
+        val values = ContentValues().apply {
+            put(CalendarContract.Calendars.ACCOUNT_NAME, LOCAL_ACCOUNT_NAME)
+            put(CalendarContract.Calendars.ACCOUNT_TYPE, CalendarContract.ACCOUNT_TYPE_LOCAL)
+            put(CalendarContract.Calendars.OWNER_ACCOUNT, LOCAL_ACCOUNT_NAME)
+            // NAME is the sync-adapter id; DISPLAY_NAME is what the user sees.
+            put(CalendarContract.Calendars.NAME, name)
+            put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, name)
+            put(CalendarContract.Calendars.CALENDAR_COLOR, color)
+            put(
+                CalendarContract.Calendars.CALENDAR_ACCESS_LEVEL,
+                CalendarContract.Calendars.CAL_ACCESS_OWNER,
+            )
+            put(CalendarContract.Calendars.VISIBLE, 1)
+            put(CalendarContract.Calendars.SYNC_EVENTS, 1)
+            putDescription(description)
+        }
+        val uri = resolver.insert(localCalendarsUri(), values)
+            ?: throw WriteFailedException("create local calendar '$name'")
+        return ContentUris.parseId(uri)
+    }
+
+    override fun updateCalendar(id: Long, displayName: String, color: Int, description: String?) {
+        val name = displayName.trim().ifEmpty { Fallbacks.UNNAMED_CALENDAR }
+        val values = ContentValues().apply {
+            put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, name)
+            put(CalendarContract.Calendars.NAME, name)
+            put(CalendarContract.Calendars.CALENDAR_COLOR, color)
+            putDescription(description)
+        }
+        val rows = resolver.update(
+            ContentUris.withAppendedId(localCalendarsUri(), id),
+            values, null, null,
+        )
+        if (rows == 0) throw WriteFailedException("update calendar id=$id")
+    }
+
+    /** Store the description in CAL_SYNC1, or clear it when blank/absent. */
+    private fun ContentValues.putDescription(description: String?) {
+        val text = description?.trim().orEmpty()
+        if (text.isEmpty()) {
+            putNull(CalendarProjection.DESCRIPTION_COLUMN)
+        } else {
+            put(CalendarProjection.DESCRIPTION_COLUMN, text)
+        }
+    }
+
+    override fun deleteCalendar(id: Long) {
+        val deleted = resolver.delete(
+            ContentUris.withAppendedId(localCalendarsUri(), id),
+            null, null,
+        )
+        if (deleted == 0) throw WriteFailedException("delete calendar id=$id")
+    }
+
     override fun instances(beginMillis: Long, endMillis: Long): List<EventInstance> {
         val uri = CalendarContract.Instances.CONTENT_URI.buildUpon().apply {
             ContentUris.appendId(this, beginMillis)
@@ -425,5 +509,11 @@ class AndroidCalendarDataSource @Inject constructor(
 
     private companion object {
         const val TAG = "CalendarDataSource"
+
+        /**
+         * Shared account for every app-created local calendar, so they group
+         * together (by account) in the filter sheet and calendar manager.
+         */
+        const val LOCAL_ACCOUNT_NAME = "Calendula"
     }
 }

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarMapper.kt

@@ -3,14 +3,26 @@ package de.jeanlucmakiola.calendula.data.calendar
 import android.provider.CalendarContract
 import de.jeanlucmakiola.calendula.domain.CalendarSource
 
-internal fun ColumnReader.toCalendarSource(): CalendarSource = CalendarSource(
-    id = getLong(CalendarProjection.IDX_ID),
-    displayName = getString(CalendarProjection.IDX_DISPLAY_NAME)
-        ?: Fallbacks.UNNAMED_CALENDAR,
-    accountName = getString(CalendarProjection.IDX_ACCOUNT_NAME).orEmpty(),
-    accountType = getString(CalendarProjection.IDX_ACCOUNT_TYPE).orEmpty(),
-    color = getInt(CalendarProjection.IDX_COLOR),
-    isVisibleInSystem = getInt(CalendarProjection.IDX_VISIBLE) != 0,
-    canModifyContents = getInt(CalendarProjection.IDX_ACCESS_LEVEL) >=
-        CalendarContract.Calendars.CAL_ACCESS_CONTRIBUTOR,
-)
+internal fun ColumnReader.toCalendarSource(): CalendarSource {
+    val accountType = getString(CalendarProjection.IDX_ACCOUNT_TYPE).orEmpty()
+    val isLocal = accountType == CalendarContract.ACCOUNT_TYPE_LOCAL
+    return CalendarSource(
+        id = getLong(CalendarProjection.IDX_ID),
+        displayName = getString(CalendarProjection.IDX_DISPLAY_NAME)
+            ?: Fallbacks.UNNAMED_CALENDAR,
+        accountName = getString(CalendarProjection.IDX_ACCOUNT_NAME).orEmpty(),
+        accountType = accountType,
+        color = getInt(CalendarProjection.IDX_COLOR),
+        isVisibleInSystem = getInt(CalendarProjection.IDX_VISIBLE) != 0,
+        canModifyContents = getInt(CalendarProjection.IDX_ACCESS_LEVEL) >=
+            CalendarContract.Calendars.CAL_ACCESS_CONTRIBUTOR,
+        isLocal = isLocal,
+        // CAL_SYNC1 holds the sync token for synced rows, so only treat it as a
+        // user description on the local calendars the app owns.
+        description = if (isLocal) {
+            getString(CalendarProjection.IDX_DESCRIPTION)?.takeIf { it.isNotBlank() }
+        } else {
+            null
+        },
+    )
+}

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarRepository.kt

@@ -12,6 +12,15 @@ interface CalendarRepository {
     fun instances(range: ClosedRange<Instant>): Flow<List<EventInstance>>
     suspend fun eventDetail(eventId: Long): EventDetail
 
+    /** Create a device-only (LOCAL) calendar the app owns; returns its id. */
+    suspend fun createLocalCalendar(displayName: String, color: Int, description: String?): Long
+
+    /** Update name, color and description of a local calendar the app owns. */
+    suspend fun updateCalendar(id: Long, displayName: String, color: Int, description: String?)
+
+    /** Permanently delete a local calendar the app owns, with all its events. */
+    suspend fun deleteCalendar(id: Long)
+
     /** Create a new event from a validated form; returns the new `Events._ID`. */
     suspend fun createEvent(form: EventForm): Long
 

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarRepositoryImpl.kt

@@ -70,6 +70,24 @@ class CalendarRepositoryImpl @Inject constructor(
         dataSource.eventDetail(eventId) ?: throw NoSuchEventException(eventId)
     }
 
+    override suspend fun createLocalCalendar(
+        displayName: String,
+        color: Int,
+        description: String?,
+    ): Long = withContext(io) {
+        dataSource.createLocalCalendar(displayName, color, description)
+    }
+
+    override suspend fun updateCalendar(
+        id: Long,
+        displayName: String,
+        color: Int,
+        description: String?,
+    ) = withContext(io) { dataSource.updateCalendar(id, displayName, color, description) }
+
+    override suspend fun deleteCalendar(id: Long) =
+        withContext(io) { dataSource.deleteCalendar(id) }
+
     override suspend fun createEvent(form: EventForm): Long = withContext(io) {
         dataSource.insertEvent(form)
     }

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/Projections.kt

@@ -11,8 +11,14 @@ internal object CalendarProjection {
         CalendarContract.Calendars.CALENDAR_COLOR,
         CalendarContract.Calendars.VISIBLE,
         CalendarContract.Calendars.CALENDAR_ACCESS_LEVEL,
+        // CalendarContract has no description column; for the local calendars we
+        // own we stash one in CAL_SYNC1 (synced rows put their sync token here,
+        // so the mapper only reads it for local calendars).
+        DESCRIPTION_COLUMN,
     )
 
+    const val DESCRIPTION_COLUMN: String = CalendarContract.Calendars.CAL_SYNC1
+
     const val IDX_ID = 0
     const val IDX_DISPLAY_NAME = 1
     const val IDX_ACCOUNT_NAME = 2
@@ -20,6 +26,7 @@ internal object CalendarProjection {
     const val IDX_COLOR = 4
     const val IDX_VISIBLE = 5
     const val IDX_ACCESS_LEVEL = 6
+    const val IDX_DESCRIPTION = 7
 }
 
 internal object InstanceProjection {

app/src/main/java/de/jeanlucmakiola/calendula/domain/Models.kt

@@ -15,6 +15,17 @@ data class CalendarSource(
      * subscriptions, birthday calendars and other read-only sources.
      */
     val canModifyContents: Boolean = false,
+    /**
+     * A device-only calendar the app itself owns (`ACCOUNT_TYPE_LOCAL`): it has
+     * no sync backend, so the app can rename / recolor / delete it. Synced
+     * calendars (Google, DAVx5, …) are managed in their own source app instead.
+     */
+    val isLocal: Boolean = false,
+    /**
+     * Free-text note for a local calendar (stored in `CAL_SYNC1`, which the app
+     * owns for its own calendars). Always null for synced calendars.
+     */
+    val description: String? = null,
 )
 
 data class EventInstance(

app/src/main/java/de/jeanlucmakiola/calendula/ui/CalendarHost.kt

@@ -16,6 +16,7 @@ import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import de.jeanlucmakiola.calendula.domain.EventInstance
+import de.jeanlucmakiola.calendula.ui.calendars.CalendarsScreen
 import de.jeanlucmakiola.calendula.ui.common.CalendarView
 import de.jeanlucmakiola.calendula.ui.common.rememberCalendarSlideSpec
 import de.jeanlucmakiola.calendula.ui.day.DayScreen
@@ -86,13 +87,23 @@ fun CalendarHost(
     var showSettings by rememberSaveable { mutableStateOf(false) }
     val onOpenSettings = { showSettings = true }
 
+    // Calendar manager (reached from Settings) — its own overlay so it slides
+    // over Settings and survives view switches.
+    var showCalendars by rememberSaveable { mutableStateOf(false) }
+
     // Event form (v1.2 create) — same held-key pattern as the detail screen:
     // [heldCreateIso] keeps the prefill date alive through the slide-out.
+    // [createStartMinutes] is the tapped slot's start (minutes from midnight)
+    // when the form is opened from a day/week grid tap; null from the FAB.
     var createDateIso by rememberSaveable { mutableStateOf<String?>(null) }
     var heldCreateIso by remember { mutableStateOf<String?>(null) }
-    val onCreateEvent: (LocalDate) -> Unit = { date ->
+    var createStartMinutes by rememberSaveable { mutableStateOf<Int?>(null) }
+    var heldCreateMinutes by remember { mutableStateOf<Int?>(null) }
+    val onCreateEvent: (LocalDate, Int?) -> Unit = { date, startMinutes ->
         heldCreateIso = date.toString()
         createDateIso = date.toString()
+        heldCreateMinutes = startMinutes
+        createStartMinutes = startMinutes
     }
 
     // Edit form (v1.3) — reuses the detail screen's occurrence key; for
@@ -162,6 +173,7 @@ fun CalendarHost(
             (createDateIso ?: heldCreateIso)?.let { iso ->
                 EventEditScreen(
                     initialDateIso = iso,
+                    initialStartMinutes = createStartMinutes ?: heldCreateMinutes,
                     onClose = { createDateIso = null },
                     onSaved = { createDateIso = null },
                 )
@@ -193,7 +205,19 @@ fun CalendarHost(
             enter = slideInHorizontally(slideSpec) { it } + fadeIn(),
             exit = slideOutHorizontally(slideSpec) { it } + fadeOut(),
         ) {
-            SettingsScreen(onBack = { showSettings = false })
+            SettingsScreen(
+                onBack = { showSettings = false },
+                onManageCalendars = { showCalendars = true },
+            )
+        }
+
+        // Calendar manager — slides over Settings.
+        AnimatedVisibility(
+            visible = showCalendars,
+            enter = slideInHorizontally(slideSpec) { it } + fadeIn(),
+            exit = slideOutHorizontally(slideSpec) { it } + fadeOut(),
+        ) {
+            CalendarsScreen(onBack = { showCalendars = false })
         }
     }
 }

app/src/main/java/de/jeanlucmakiola/calendula/ui/calendars/CalendarsScreen.kt

@@ -0,0 +1,602 @@
+package de.jeanlucmakiola.calendula.ui.calendars
+
+import android.accounts.AccountManager
+import android.content.Context
+import android.content.Intent
+import android.provider.Settings
+import androidx.activity.compose.BackHandler
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.Notes
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.CalendarMonth
+import androidx.compose.material.icons.filled.Check
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.OpenInNew
+import androidx.compose.material.icons.filled.Palette
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Button
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import de.jeanlucmakiola.calendula.R
+import de.jeanlucmakiola.calendula.domain.CalendarSource
+import de.jeanlucmakiola.calendula.ui.common.InlineTextField
+import de.jeanlucmakiola.calendula.ui.common.pastelize
+
+/** Sentinel [editorId] meaning "the editor is composing a new calendar". */
+private const val NEW_CALENDAR_ID = Long.MIN_VALUE
+
+/**
+ * Calendar manager (reached from Settings). Lists the app's own device-only
+ * calendars with create / rename / recolor / delete (via a full-screen editor),
+ * and lists synced calendars read-only with a per-account "manage in the source
+ * app" deep-link — the app never touches a synced calendar's server. A
+ * full-screen destination; [onBack] pops it.
+ */
+@Composable
+fun CalendarsScreen(
+    onBack: () -> Unit,
+    viewModel: CalendarsViewModel = hiltViewModel(),
+) {
+    val calendars by viewModel.calendars.collectAsStateWithLifecycle()
+    val error by viewModel.error.collectAsStateWithLifecycle()
+
+    // null = list; NEW_CALENDAR_ID = create; any other id = edit that calendar.
+    // [editorSession] bumps on every open so the editor's field state resets for
+    // a fresh open while still surviving configuration changes within one open.
+    var editorId by rememberSaveable { mutableStateOf<Long?>(null) }
+    var editorSession by rememberSaveable { mutableStateOf(0) }
+
+    if (editorId != null) {
+        val editing = calendars.firstOrNull { it.id == editorId }
+        CalendarEditor(
+            sessionKey = editorSession,
+            isNew = editorId == NEW_CALENDAR_ID,
+            initialName = editing?.displayName.orEmpty(),
+            initialColor = editing?.color ?: CALENDAR_COLOR_PALETTE.first(),
+            initialDescription = editing?.description.orEmpty(),
+            onSave = { name, color, description ->
+                val id = editorId
+                if (id == null || id == NEW_CALENDAR_ID) {
+                    viewModel.createCalendar(name, color, description)
+                } else {
+                    viewModel.updateCalendar(id, name, color, description)
+                }
+                editorId = null
+            },
+            onDelete = {
+                editorId?.takeIf { it != NEW_CALENDAR_ID }?.let(viewModel::deleteCalendar)
+                editorId = null
+            },
+            onClose = { editorId = null },
+        )
+    } else {
+        CalendarsList(
+            local = calendars.filter { it.isLocal },
+            synced = calendars.filterNot { it.isLocal },
+            error = error,
+            onConsumeError = viewModel::consumeError,
+            onBack = onBack,
+            onAdd = { editorSession++; editorId = NEW_CALENDAR_ID },
+            onEdit = { calendar -> editorSession++; editorId = calendar.id },
+        )
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun CalendarsList(
+    local: List<CalendarSource>,
+    synced: List<CalendarSource>,
+    error: Boolean,
+    onConsumeError: () -> Unit,
+    onBack: () -> Unit,
+    onAdd: () -> Unit,
+    onEdit: (CalendarSource) -> Unit,
+) {
+    val snackbarHostState = remember { SnackbarHostState() }
+    val writeErrorText = stringResource(R.string.calendars_write_error)
+    val dark = isSystemInDarkTheme()
+
+    BackHandler(onBack = onBack)
+    LaunchedEffect(error) {
+        if (error) {
+            snackbarHostState.showSnackbar(writeErrorText)
+            onConsumeError()
+        }
+    }
+
+    Scaffold(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(MaterialTheme.colorScheme.surface),
+        topBar = {
+            TopAppBar(
+                title = { Text(stringResource(R.string.calendars_title)) },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            Icons.AutoMirrored.Filled.ArrowBack,
+                            contentDescription = stringResource(R.string.settings_back),
+                        )
+                    }
+                },
+            )
+        },
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+    ) { innerPadding ->
+        Column(
+            modifier = Modifier
+                .padding(innerPadding)
+                .fillMaxSize()
+                .verticalScroll(rememberScrollState()),
+        ) {
+            SectionHeader(stringResource(R.string.calendars_local_header))
+            if (local.isEmpty()) {
+                HintText(stringResource(R.string.calendars_local_empty))
+            } else {
+                local.forEach { calendar ->
+                    CalendarRow(
+                        name = calendar.displayName,
+                        color = calendar.color,
+                        dark = dark,
+                        subtitle = calendar.description,
+                        onClick = { onEdit(calendar) },
+                        trailing = {
+                            Icon(
+                                Icons.Default.Edit,
+                                contentDescription = stringResource(R.string.calendars_edit_title),
+                                tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                                modifier = Modifier.size(20.dp),
+                            )
+                        },
+                    )
+                }
+            }
+            FilledTonalButton(
+                onClick = onAdd,
+                modifier = Modifier.padding(horizontal = 24.dp, vertical = 8.dp),
+            ) {
+                Icon(Icons.Default.Add, contentDescription = null, modifier = Modifier.size(18.dp))
+                Spacer(Modifier.width(8.dp))
+                Text(stringResource(R.string.calendars_add))
+            }
+
+            HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+            SectionHeader(stringResource(R.string.calendars_synced_header))
+            HintText(stringResource(R.string.calendars_synced_hint))
+            synced
+                .groupBy { it.accountName.ifBlank { it.accountType } }
+                .forEach { (account, cals) ->
+                    SyncedAccountGroup(
+                        account = account,
+                        accountType = cals.first().accountType,
+                        calendars = cals,
+                        dark = dark,
+                    )
+                }
+            AddAccountButton()
+            Spacer(Modifier.height(24.dp))
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun CalendarEditor(
+    sessionKey: Int,
+    isNew: Boolean,
+    initialName: String,
+    initialColor: Int,
+    initialDescription: String,
+    onSave: (name: String, color: Int, description: String?) -> Unit,
+    onDelete: () -> Unit,
+    onClose: () -> Unit,
+) {
+    var name by rememberSaveable(sessionKey) { mutableStateOf(initialName) }
+    var color by rememberSaveable(sessionKey) { mutableStateOf(initialColor) }
+    var description by rememberSaveable(sessionKey) { mutableStateOf(initialDescription) }
+    var confirmDelete by remember { mutableStateOf(false) }
+    val dark = isSystemInDarkTheme()
+
+    BackHandler(onBack = onClose)
+
+    Scaffold(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(MaterialTheme.colorScheme.surface),
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        stringResource(
+                            if (isNew) R.string.calendars_new_title
+                            else R.string.calendars_edit_title,
+                        ),
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onClose) {
+                        Icon(
+                            Icons.Default.Close,
+                            contentDescription = stringResource(R.string.event_edit_close),
+                        )
+                    }
+                },
+                actions = {
+                    if (!isNew) {
+                        IconButton(onClick = { confirmDelete = true }) {
+                            Icon(
+                                Icons.Default.Delete,
+                                contentDescription = stringResource(R.string.event_detail_delete),
+                                tint = MaterialTheme.colorScheme.error,
+                            )
+                        }
+                    }
+                    // Filled save button, matching the event editor's top bar.
+                    Button(
+                        onClick = {
+                            onSave(name.trim(), color, description.trim().ifEmpty { null })
+                        },
+                        enabled = name.isNotBlank(),
+                        modifier = Modifier.padding(end = 12.dp),
+                    ) {
+                        Text(stringResource(R.string.event_edit_save))
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surface,
+                ),
+            )
+        },
+    ) { innerPadding ->
+        Column(
+            modifier = Modifier
+                .padding(innerPadding)
+                .fillMaxSize()
+                .verticalScroll(rememberScrollState())
+                .padding(horizontal = 16.dp, vertical = 8.dp),
+            verticalArrangement = Arrangement.spacedBy(12.dp),
+        ) {
+            EditorCard(icon = Icons.Default.CalendarMonth, iconTint = pastelize(color, dark)) {
+                InlineTextField(
+                    value = name,
+                    onValueChange = { name = it },
+                    placeholder = stringResource(R.string.calendars_name_label),
+                    textStyle = MaterialTheme.typography.titleLarge,
+                    capitalization = KeyboardCapitalization.Sentences,
+                )
+            }
+            EditorCard(
+                icon = Icons.Default.Palette,
+                iconTint = MaterialTheme.colorScheme.onSurfaceVariant,
+                iconAtTop = true,
+            ) {
+                Text(
+                    text = stringResource(R.string.calendars_color_label),
+                    style = MaterialTheme.typography.labelLarge,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                )
+                Spacer(Modifier.height(12.dp))
+                ColorPalette(selected = color, onSelect = { color = it }, dark = dark)
+            }
+            EditorCard(
+                icon = Icons.AutoMirrored.Filled.Notes,
+                iconTint = MaterialTheme.colorScheme.onSurfaceVariant,
+                iconAtTop = true,
+            ) {
+                InlineTextField(
+                    value = description,
+                    onValueChange = { description = it },
+                    placeholder = stringResource(R.string.calendars_description_hint),
+                    singleLine = false,
+                    minLines = 2,
+                    capitalization = KeyboardCapitalization.Sentences,
+                )
+            }
+        }
+    }
+
+    if (confirmDelete) {
+        AlertDialog(
+            onDismissRequest = { confirmDelete = false },
+            title = { Text(stringResource(R.string.calendars_delete_confirm_title)) },
+            text = {
+                Text(stringResource(R.string.calendars_delete_confirm_message, initialName))
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    confirmDelete = false
+                    onDelete()
+                }) {
+                    Text(
+                        stringResource(R.string.event_detail_delete),
+                        color = MaterialTheme.colorScheme.error,
+                    )
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { confirmDelete = false }) {
+                    Text(stringResource(R.string.dialog_cancel))
+                }
+            },
+        )
+    }
+}
+
+/** Tonal field card matching the event editor's design (icon + content). */
+@Composable
+private fun EditorCard(
+    icon: ImageVector,
+    iconTint: Color,
+    iconAtTop: Boolean = false,
+    content: @Composable () -> Unit,
+) {
+    Surface(
+        color = MaterialTheme.colorScheme.surfaceContainerHigh,
+        shape = RoundedCornerShape(16.dp),
+        modifier = Modifier.fillMaxWidth(),
+    ) {
+        Row(
+            modifier = Modifier.padding(16.dp),
+            verticalAlignment = if (iconAtTop) Alignment.Top else Alignment.CenterVertically,
+        ) {
+            Icon(
+                imageVector = icon,
+                contentDescription = null,
+                tint = iconTint,
+                modifier = Modifier
+                    .padding(top = if (iconAtTop) 2.dp else 0.dp)
+                    .size(24.dp),
+            )
+            Spacer(Modifier.width(16.dp))
+            Column(modifier = Modifier.weight(1f)) { content() }
+        }
+    }
+}
+
+@OptIn(ExperimentalLayoutApi::class)
+@Composable
+private fun ColorPalette(selected: Int, onSelect: (Int) -> Unit, dark: Boolean) {
+    FlowRow(horizontalArrangement = Arrangement.spacedBy(12.dp)) {
+        CALENDAR_COLOR_PALETTE.forEach { argb ->
+            val isSelected = argb == selected
+            // Show the pastel the calendar will actually render as, not the raw hue.
+            Box(
+                contentAlignment = Alignment.Center,
+                modifier = Modifier
+                    .padding(vertical = 4.dp)
+                    .size(40.dp)
+                    .clip(CircleShape)
+                    .background(pastelize(argb, dark))
+                    .then(
+                        if (isSelected) {
+                            Modifier.border(2.dp, MaterialTheme.colorScheme.onSurface, CircleShape)
+                        } else {
+                            Modifier
+                        },
+                    )
+                    .clickable { onSelect(argb) },
+            ) {
+                if (isSelected) {
+                    Icon(
+                        Icons.Default.Check,
+                        contentDescription = null,
+                        tint = Color.Black.copy(alpha = 0.7f),
+                        modifier = Modifier.size(20.dp),
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun SyncedAccountGroup(
+    account: String,
+    accountType: String,
+    calendars: List<CalendarSource>,
+    dark: Boolean,
+) {
+    val context = LocalContext.current
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 24.dp, end = 16.dp, top = 12.dp, bottom = 4.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Text(
+            text = account,
+            style = MaterialTheme.typography.titleSmall,
+            fontWeight = FontWeight.SemiBold,
+            modifier = Modifier.weight(1f),
+        )
+        OutlinedButton(onClick = {
+            runCatching { context.startActivity(sourceAppIntent(context, accountType)) }
+        }) {
+            Icon(Icons.Default.OpenInNew, contentDescription = null, modifier = Modifier.size(16.dp))
+            Spacer(Modifier.width(6.dp))
+            Text(stringResource(R.string.calendars_manage_in_app))
+        }
+    }
+    calendars.forEach { calendar ->
+        CalendarRow(name = calendar.displayName, color = calendar.color, dark = dark)
+    }
+}
+
+@Composable
+private fun AddAccountButton() {
+    val context = LocalContext.current
+    FilledTonalButton(
+        onClick = {
+            runCatching { context.startActivity(Intent(Settings.ACTION_ADD_ACCOUNT)) }
+        },
+        modifier = Modifier.padding(horizontal = 24.dp, vertical = 8.dp),
+    ) {
+        Icon(Icons.Default.Add, contentDescription = null, modifier = Modifier.size(18.dp))
+        Spacer(Modifier.width(8.dp))
+        Text(stringResource(R.string.calendars_add_account))
+    }
+}
+
+@Composable
+private fun CalendarRow(
+    name: String,
+    color: Int,
+    dark: Boolean,
+    subtitle: String? = null,
+    onClick: (() -> Unit)? = null,
+    trailing: @Composable (() -> Unit)? = null,
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .then(if (onClick != null) Modifier.clickable(onClick = onClick) else Modifier)
+            .padding(horizontal = 24.dp, vertical = 12.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Box(
+            modifier = Modifier
+                .size(16.dp)
+                .clip(CircleShape)
+                .background(pastelize(color, dark)),
+        )
+        Spacer(Modifier.width(16.dp))
+        Column(modifier = Modifier.weight(1f)) {
+            Text(text = name, style = MaterialTheme.typography.bodyLarge)
+            if (!subtitle.isNullOrBlank()) {
+                Text(
+                    text = subtitle,
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    maxLines = 2,
+                    overflow = TextOverflow.Ellipsis,
+                )
+            }
+        }
+        if (trailing != null) {
+            Spacer(Modifier.width(8.dp))
+            trailing()
+        }
+    }
+}
+
+@Composable
+private fun SectionHeader(text: String) {
+    Text(
+        text = text,
+        style = MaterialTheme.typography.labelLarge,
+        color = MaterialTheme.colorScheme.primary,
+        modifier = Modifier.padding(start = 24.dp, end = 24.dp, top = 16.dp, bottom = 4.dp),
+    )
+}
+
+@Composable
+private fun HintText(text: String) {
+    Text(
+        text = text,
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.onSurfaceVariant,
+        modifier = Modifier.padding(horizontal = 24.dp, vertical = 4.dp),
+    )
+}
+
+/**
+ * Pick the app to open for managing a synced calendar's account. The account's
+ * own authenticator package (resolved from [AccountManager], no permission
+ * needed) handles any sync provider — DAVx5, ICSx5, Nextcloud, … — and a small
+ * curated map redirects the few cases where the authenticator isn't the app to
+ * open (Google's authenticator is Play Services, but users want the Calendar
+ * app). Falls back to the system account settings when nothing launchable is
+ * found, so the button always lands somewhere sensible.
+ */
+private fun sourceAppIntent(context: Context, accountType: String): Intent {
+    val pm = context.packageManager
+    val candidates = buildList {
+        AccountManager.get(context).authenticatorTypes
+            .firstOrNull { it.type.equals(accountType, ignoreCase = true) }
+            ?.packageName
+            ?.let { add(it) }
+        curatedSourcePackage(accountType)?.let { add(it) }
+    }
+    for (pkg in candidates) {
+        pm.getLaunchIntentForPackage(pkg)?.let { return it }
+    }
+    return Intent(Settings.ACTION_SYNC_SETTINGS)
+}
+
+/** Preferred app for account types whose authenticator isn't the app to open. */
+private fun curatedSourcePackage(accountType: String): String? = when {
+    accountType.equals("com.google", ignoreCase = true) -> "com.google.android.calendar"
+    else -> null
+}
+
+/** Google-Calendar-style palette; values are ARGB ints for `Calendars.CALENDAR_COLOR`. */
+internal val CALENDAR_COLOR_PALETTE: List<Int> = listOf(
+    0xFFD50000, // red
+    0xFFE67C00, // orange
+    0xFFF6BF26, // amber
+    0xFF33B679, // green
+    0xFF0B8043, // dark green
+    0xFF039BE5, // blue
+    0xFF3F51B5, // indigo
+    0xFF8E24AA, // purple
+    0xFF616161, // graphite
+).map { it.toInt() }

app/src/main/java/de/jeanlucmakiola/calendula/ui/calendars/CalendarsViewModel.kt

@@ -0,0 +1,71 @@
+package de.jeanlucmakiola.calendula.ui.calendars
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import de.jeanlucmakiola.calendula.data.calendar.CalendarRepository
+import de.jeanlucmakiola.calendula.data.di.IoDispatcher
+import de.jeanlucmakiola.calendula.domain.CalendarSource
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.launch
+import kotlin.coroutines.cancellation.CancellationException
+import javax.inject.Inject
+
+/**
+ * Backs the calendar manager: lists every calendar (the screen splits them into
+ * the app's own local calendars and read-only/synced ones) and creates,
+ * renames, recolors or deletes the local calendars the app owns. Write failures
+ * flip [error] so the screen can surface a one-shot message.
+ */
+@HiltViewModel
+class CalendarsViewModel @Inject constructor(
+    private val repository: CalendarRepository,
+    @IoDispatcher private val io: CoroutineDispatcher,
+) : ViewModel() {
+
+    val calendars: StateFlow<List<CalendarSource>> =
+        repository.calendars()
+            .catch { emit(emptyList()) }
+            .flowOn(io)
+            .stateIn(
+                scope = viewModelScope,
+                started = SharingStarted.WhileSubscribed(5_000L),
+                initialValue = emptyList(),
+            )
+
+    private val _error = MutableStateFlow(false)
+    val error: StateFlow<Boolean> = _error.asStateFlow()
+
+    fun consumeError() { _error.value = false }
+
+    fun createCalendar(displayName: String, color: Int, description: String?) = write {
+        repository.createLocalCalendar(displayName, color, description)
+    }
+
+    fun updateCalendar(id: Long, displayName: String, color: Int, description: String?) = write {
+        repository.updateCalendar(id, displayName, color, description)
+    }
+
+    fun deleteCalendar(id: Long) = write {
+        repository.deleteCalendar(id)
+    }
+
+    private inline fun write(crossinline block: suspend () -> Unit) {
+        viewModelScope.launch {
+            try {
+                block()
+            } catch (e: CancellationException) {
+                throw e
+            } catch (e: Exception) {
+                _error.value = true
+            }
+        }
+    }
+}

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/InlineTextField.kt

@@ -0,0 +1,74 @@
+package de.jeanlucmakiola.calendula.ui.common
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.isSpecified
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+
+/**
+ * The app's borderless text input: no underline, no outline, just the tonal
+ * card behind it. This is the standard input across the app — we deliberately
+ * don't use Material's outlined/filled text fields, so anything that takes text
+ * (the event form, the calendar manager, dialogs) uses this inside a tonal
+ * [androidx.compose.material3.Surface].
+ */
+@Composable
+fun InlineTextField(
+    value: String,
+    onValueChange: (String) -> Unit,
+    placeholder: String,
+    modifier: Modifier = Modifier
+        .fillMaxWidth()
+        .padding(vertical = 4.dp),
+    textStyle: TextStyle = MaterialTheme.typography.titleMedium,
+    singleLine: Boolean = true,
+    minLines: Int = 1,
+    keyboardType: KeyboardType = KeyboardType.Text,
+    capitalization: KeyboardCapitalization = KeyboardCapitalization.None,
+) {
+    val resolvedStyle = textStyle.copy(
+        color = if (textStyle.color.isSpecified) {
+            textStyle.color
+        } else {
+            MaterialTheme.colorScheme.onSurface
+        },
+    )
+    BasicTextField(
+        value = value,
+        onValueChange = onValueChange,
+        textStyle = resolvedStyle,
+        singleLine = singleLine,
+        minLines = minLines,
+        keyboardOptions = KeyboardOptions(
+            keyboardType = keyboardType,
+            capitalization = capitalization,
+        ),
+        cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
+        decorationBox = { innerTextField ->
+            Box {
+                if (value.isEmpty()) {
+                    // Clearly fainter than typed text, so a hint never reads as
+                    // prefilled content.
+                    Text(
+                        text = placeholder,
+                        style = resolvedStyle,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.5f),
+                    )
+                }
+                innerTextField()
+            }
+        },
+        modifier = modifier,
+    )
+}

app/src/main/java/de/jeanlucmakiola/calendula/ui/day/DayScreen.kt

@@ -6,6 +6,7 @@ import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.gestures.detectHorizontalDragGestures
+import androidx.compose.foundation.gestures.detectTapGestures
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
@@ -104,7 +105,7 @@ fun DayScreen(
     onSelectView: (CalendarView) -> Unit,
     onEventClick: (EventInstance) -> Unit,
     onOpenSettings: () -> Unit,
-    onCreateEvent: (LocalDate) -> Unit,
+    onCreateEvent: (LocalDate, Int?) -> Unit,
     modifier: Modifier = Modifier,
     initialDateIso: String? = null,
     viewModel: DayViewModel = hiltViewModel(),
@@ -185,7 +186,7 @@ fun DayScreen(
                     todayVisible = !isOnToday,
                     todayText = stringResource(R.string.day_today_action),
                     onToday = jumpToToday,
-                    onCreate = { onCreateEvent(date) },
+                    onCreate = { onCreateEvent(date, null) },
                 )
             },
         ) { innerPadding ->
@@ -197,6 +198,7 @@ fun DayScreen(
                 onSwipePrev = goPrev,
                 onRetry = jumpToToday,
                 onEventClick = onEventClick,
+                onCreateAt = { d, minutes -> onCreateEvent(d, minutes) },
                 modifier = Modifier
                     .padding(innerPadding)
                     .fillMaxSize(),
@@ -214,6 +216,7 @@ private fun DayContent(
     onSwipePrev: () -> Unit,
     onRetry: () -> Unit,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
     modifier: Modifier = Modifier,
 ) {
     val density = LocalDensity.current
@@ -282,6 +285,7 @@ private fun DayContent(
                 scrollState = scrollState,
                 allDayHeight = allDayHeight,
                 onEventClick = onEventClick,
+                onCreateAt = onCreateAt,
             )
         }
     }
@@ -294,6 +298,7 @@ private fun DaySuccess(
     scrollState: ScrollState,
     allDayHeight: Dp,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
 ) {
     Column(modifier = Modifier.fillMaxSize()) {
         // All-day strip collapses to nothing when the day has no all-day events,
@@ -309,7 +314,12 @@ private fun DaySuccess(
         // Breathing room between the (colour-shifting) top section and the
         // scrolling timeline below.
         Spacer(Modifier.height(8.dp))
-        Timeline(state = state, scrollState = scrollState, onEventClick = onEventClick)
+        Timeline(
+            state = state,
+            scrollState = scrollState,
+            onEventClick = onEventClick,
+            onCreateAt = onCreateAt,
+        )
     }
 }
 
@@ -427,6 +437,7 @@ private fun Timeline(
     state: DayUiState.Success,
     scrollState: ScrollState,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
 ) {
     val totalHeight = HOUR_HEIGHT * 24
     val dark = isSystemInDarkTheme()
@@ -474,7 +485,9 @@ private fun Timeline(
                 DayColumnCard(
                     blocks = state.timed,
                     dark = dark,
+                    date = state.date,
                     onEventClick = onEventClick,
+                    onCreateAt = onCreateAt,
                     modifier = Modifier
                         .fillMaxWidth()
                         .height(totalHeight),
@@ -488,9 +501,12 @@ private fun Timeline(
 private fun DayColumnCard(
     blocks: List<TimedBlock>,
     dark: Boolean,
+    date: LocalDate,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
     modifier: Modifier = Modifier,
 ) {
+    val hourPx = with(LocalDensity.current) { HOUR_HEIGHT.toPx() }
     Card(
         // Plain rectangular column — the soft corners come from the outer
         // rounded scroll viewport, so inner rounding would look odd at the edges.
@@ -500,7 +516,19 @@ private fun DayColumnCard(
         ),
         modifier = modifier,
     ) {
-        BoxWithConstraints(modifier = Modifier.fillMaxSize()) {
+        BoxWithConstraints(
+            modifier = Modifier
+                .fillMaxSize()
+                // Tap an empty slot to create an event there. Taps on event
+                // blocks are consumed by their own click handler first, so this
+                // only fires on the column background. Snaps to the tapped hour.
+                .pointerInput(date) {
+                    detectTapGestures { offset ->
+                        val hour = (offset.y / hourPx).toInt().coerceIn(0, 23)
+                        onCreateAt(date, hour * 60)
+                    }
+                },
+        ) {
             val colWidth = maxWidth
             blocks.forEach { block ->
                 val laneWidth = colWidth / block.laneCount

app/src/main/java/de/jeanlucmakiola/calendula/ui/edit/EventEditScreen.kt

@@ -110,6 +110,7 @@ import de.jeanlucmakiola.calendula.domain.RecurringWriteScope
 import de.jeanlucmakiola.calendula.domain.SimpleRecurrence
 import de.jeanlucmakiola.calendula.domain.parseSimpleRecurrence
 import de.jeanlucmakiola.calendula.domain.toRRule
+import de.jeanlucmakiola.calendula.ui.common.InlineTextField
 import de.jeanlucmakiola.calendula.ui.common.OptionCard
 import de.jeanlucmakiola.calendula.ui.common.currentLocale
 import de.jeanlucmakiola.calendula.ui.common.pastelize
@@ -147,6 +148,7 @@ fun EventEditScreen(
     onClose: () -> Unit,
     onSaved: () -> Unit,
     editKey: LongArray? = null,
+    initialStartMinutes: Int? = null,
     viewModel: EventEditViewModel = hiltViewModel(),
 ) {
     LaunchedEffect(initialDateIso, editKey) {
@@ -159,7 +161,7 @@ fun EventEditScreen(
         } else {
             val date = initialDateIso?.let { runCatching { LocalDate.parse(it) }.getOrNull() }
                 ?: Clock.System.now().toLocalDateTime(TimeZone.currentSystemDefault()).date
-            viewModel.openNew(date)
+            viewModel.openNew(date, initialStartMinutes)
         }
     }
     val state by viewModel.state.collectAsStateWithLifecycle()
@@ -1436,8 +1438,9 @@ private fun EditCard(
 }
 
 /**
- * Borderless text input used inside the cards (and as the headline title) —
- * no underline, no outline, just the card's tonal surface behind it.
+ * Borderless text input used inside the cards (and as the headline title).
+ * Thin wrapper over the shared [InlineTextField] so the form and the rest of
+ * the app share one input style.
  */
 @Composable
 private fun InlineField(
@@ -1452,36 +1455,15 @@ private fun InlineField(
         .fillMaxWidth()
         .padding(vertical = 4.dp),
 ) {
-    val resolvedStyle = textStyle.copy(
-        color = if (textStyle.color.isSpecified) {
-            textStyle.color
-        } else {
-            MaterialTheme.colorScheme.onSurface
-        },
-    )
-    BasicTextField(
+    InlineTextField(
         value = value,
         onValueChange = onValueChange,
-        textStyle = resolvedStyle,
+        placeholder = placeholder,
+        modifier = modifier,
+        textStyle = textStyle,
         singleLine = singleLine,
         minLines = minLines,
-        keyboardOptions = KeyboardOptions(keyboardType = keyboardType),
-        cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
-        decorationBox = { innerTextField ->
-            Box {
-                if (value.isEmpty()) {
-                    // Clearly fainter than typed text, so a hint (e.g. the
-                    // "10" in the reminder amount) never reads as prefilled.
-                    Text(
-                        text = placeholder,
-                        style = resolvedStyle,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.5f),
-                    )
-                }
-                innerTextField()
-            }
-        },
-        modifier = modifier,
+        keyboardType = keyboardType,
     )
 }
 

app/src/main/java/de/jeanlucmakiola/calendula/ui/edit/EventEditViewModel.kt

@@ -138,21 +138,26 @@ class EventEditViewModel @Inject constructor(
         )
 
     /**
-     * Initialise a fresh form for a new event on [date]. No-op when a form is
-     * already open, so user input survives configuration changes; [reset]
-     * clears it when the screen closes.
+     * Initialise a fresh form for a new event on [date]. [startMinutes] (minutes
+     * from midnight) anchors the start when the form is opened by tapping a slot
+     * in the day/week grid; without it the default is the next full hour (today)
+     * or 09:00 (any other day). No-op when a form is already open, so user input
+     * survives configuration changes; [reset] clears it when the screen closes.
      */
-    fun openNew(date: LocalDate) {
+    fun openNew(date: LocalDate, startMinutes: Int? = null) {
         if (_form.value != null) return
         val zone = TimeZone.currentSystemDefault()
         val now = Clock.System.now()
-        val start = if (date == now.toLocalDateTime(zone).date) {
-            // Today: the next full hour (may roll into tomorrow before midnight).
-            val hourMillis = 3_600_000L
-            val rounded = (now.toEpochMilliseconds() / hourMillis + 1) * hourMillis
-            Instant.fromEpochMilliseconds(rounded).toLocalDateTime(zone)
-        } else {
-            LocalDateTime(date, LocalTime(9, 0))
+        val start = when {
+            startMinutes != null ->
+                LocalDateTime(date, LocalTime(startMinutes / 60, startMinutes % 60))
+            date == now.toLocalDateTime(zone).date -> {
+                // Today: the next full hour (may roll into tomorrow before midnight).
+                val hourMillis = 3_600_000L
+                val rounded = (now.toEpochMilliseconds() / hourMillis + 1) * hourMillis
+                Instant.fromEpochMilliseconds(rounded).toLocalDateTime(zone)
+            }
+            else -> LocalDateTime(date, LocalTime(9, 0))
         }
         val end = (start.toInstant(zone) + 1.hours).toLocalDateTime(zone)
         _form.value = EventForm(calendarId = null, start = start, end = end)

app/src/main/java/de/jeanlucmakiola/calendula/ui/month/MonthScreen.kt

@@ -86,7 +86,7 @@ fun MonthScreen(
     onSelectView: (CalendarView) -> Unit,
     onOpenDay: (LocalDate) -> Unit,
     onOpenSettings: () -> Unit,
-    onCreateEvent: (LocalDate) -> Unit,
+    onCreateEvent: (LocalDate, Int?) -> Unit,
     modifier: Modifier = Modifier,
     viewModel: MonthViewModel = hiltViewModel(),
 ) {
@@ -166,6 +166,7 @@ fun MonthScreen(
                         onCreateEvent(
                             if (isOnCurrentMonth) today
                             else LocalDate(month.year, month.month, 1),
+                            null,
                         )
                     },
                 )

app/src/main/java/de/jeanlucmakiola/calendula/ui/settings/SettingsScreen.kt

@@ -63,6 +63,7 @@ import de.jeanlucmakiola.calendula.domain.EventFormField
 @Composable
 fun SettingsScreen(
     onBack: () -> Unit,
+    onManageCalendars: () -> Unit,
     modifier: Modifier = Modifier,
     viewModel: SettingsViewModel = hiltViewModel(),
 ) {
@@ -141,6 +142,14 @@ fun SettingsScreen(
                 onCheckedChange = viewModel::setRemindersEnabled,
             )
 
+            HorizontalDivider(Modifier.padding(vertical = 8.dp))
+            SectionHeader(stringResource(R.string.settings_section_calendars))
+            NavigationRow(
+                title = stringResource(R.string.settings_manage_calendars),
+                subtitle = stringResource(R.string.settings_manage_calendars_hint),
+                onClick = onManageCalendars,
+            )
+
             HorizontalDivider(Modifier.padding(vertical = 8.dp))
             SectionHeader(stringResource(R.string.settings_section_language))
             LanguageRow()
@@ -377,6 +386,26 @@ private fun AboutRow(title: String, value: String) {
     }
 }
 
+@Composable
+private fun NavigationRow(title: String, subtitle: String, onClick: () -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(horizontal = 24.dp, vertical = 12.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Column(Modifier.weight(1f)) {
+            Text(text = title, style = MaterialTheme.typography.bodyLarge)
+            Text(
+                text = subtitle,
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+            )
+        }
+    }
+}
+
 @Composable
 private fun FormFieldRow(
     title: String,

app/src/main/java/de/jeanlucmakiola/calendula/ui/week/WeekScreen.kt

@@ -6,6 +6,7 @@ import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.gestures.detectHorizontalDragGestures
+import androidx.compose.foundation.gestures.detectTapGestures
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -112,7 +113,7 @@ fun WeekScreen(
     onSelectView: (CalendarView) -> Unit,
     onEventClick: (EventInstance) -> Unit,
     onOpenSettings: () -> Unit,
-    onCreateEvent: (LocalDate) -> Unit,
+    onCreateEvent: (LocalDate, Int?) -> Unit,
     modifier: Modifier = Modifier,
     viewModel: WeekViewModel = hiltViewModel(),
 ) {
@@ -194,7 +195,7 @@ fun WeekScreen(
                         // Anchor on today when it's in view, else the week's first day.
                         val today = Clock.System.now()
                             .toLocalDateTime(TimeZone.currentSystemDefault()).date
-                        onCreateEvent(if (isOnCurrentWeek) today else weekStart)
+                        onCreateEvent(if (isOnCurrentWeek) today else weekStart, null)
                     },
                 )
             },
@@ -207,6 +208,7 @@ fun WeekScreen(
                 onSwipePrev = goPrev,
                 onRetry = jumpToToday,
                 onEventClick = onEventClick,
+                onCreateAt = { d, minutes -> onCreateEvent(d, minutes) },
                 modifier = Modifier
                     .padding(innerPadding)
                     .fillMaxSize(),
@@ -224,6 +226,7 @@ private fun WeekContent(
     onSwipePrev: () -> Unit,
     onRetry: () -> Unit,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
     modifier: Modifier = Modifier,
 ) {
     val density = LocalDensity.current
@@ -295,6 +298,7 @@ private fun WeekContent(
                 scrollState = scrollState,
                 allDayHeight = allDayHeight,
                 onEventClick = onEventClick,
+                onCreateAt = onCreateAt,
             )
         }
     }
@@ -307,6 +311,7 @@ private fun WeekSuccess(
     scrollState: ScrollState,
     allDayHeight: Dp,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
 ) {
     Column(modifier = Modifier.fillMaxSize()) {
         Column(
@@ -320,7 +325,12 @@ private fun WeekSuccess(
         // Breathing room between the (colour-shifting) top section and the
         // scrolling timeline below.
         Spacer(Modifier.height(8.dp))
-        Timeline(state = state, scrollState = scrollState, onEventClick = onEventClick)
+        Timeline(
+            state = state,
+            scrollState = scrollState,
+            onEventClick = onEventClick,
+            onCreateAt = onCreateAt,
+        )
     }
 }
 
@@ -533,6 +543,7 @@ private fun Timeline(
     state: WeekUiState.Success,
     scrollState: ScrollState,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
 ) {
     val totalHeight = HOUR_HEIGHT * 24
     val dark = isSystemInDarkTheme()
@@ -588,7 +599,9 @@ private fun Timeline(
                         DayColumnCard(
                             blocks = state.timedByDay[day].orEmpty(),
                             dark = dark,
+                            date = day,
                             onEventClick = onEventClick,
+                            onCreateAt = onCreateAt,
                             modifier = Modifier
                                 .weight(1f)
                                 .fillMaxHeight(),
@@ -604,9 +617,12 @@ private fun Timeline(
 private fun DayColumnCard(
     blocks: List<TimedBlock>,
     dark: Boolean,
+    date: LocalDate,
     onEventClick: (EventInstance) -> Unit,
+    onCreateAt: (LocalDate, Int) -> Unit,
     modifier: Modifier = Modifier,
 ) {
+    val hourPx = with(LocalDensity.current) { HOUR_HEIGHT.toPx() }
     Card(
         // Plain rectangular columns — the soft corners come from the outer
         // rounded scroll viewport, so inner rounding would look odd at the edges.
@@ -616,7 +632,18 @@ private fun DayColumnCard(
         ),
         modifier = modifier,
     ) {
-        BoxWithConstraints(modifier = Modifier.fillMaxSize()) {
+        BoxWithConstraints(
+            modifier = Modifier
+                .fillMaxSize()
+                // Tap an empty slot to create an event there; taps on event
+                // blocks are consumed by their own handler first. Snaps to hour.
+                .pointerInput(date) {
+                    detectTapGestures { offset ->
+                        val hour = (offset.y / hourPx).toInt().coerceIn(0, 23)
+                        onCreateAt(date, hour * 60)
+                    }
+                },
+        ) {
             val colWidth = maxWidth
             blocks.forEach { block ->
                 val laneWidth = colWidth / block.laneCount