feat: add calculator v61 app & os widget

fix: simplify scan button highlight
fix: keep tab bar fully opaque
fix: keep tab bar opaque on exit
fix: sync calculator tab bar transition
fix: align fiat placeholder text
fix: place cursor before placeholder
fix: shrink calculator widget preview rows
fix: show fiat decimal placeholder
chore: fix naming agent rules
fix: match calculator cursor style
fix: show calculator input cursor
fix: animate tab bar visibility
refactor: apply naming agent rules
refactor: isolate calculator numpad state
fix: open app from calculator widget
fix: flash calculator numpad errors
refactor: extract private calculator numpad
chore: update detekt command in docs
fix: calculator numberpad bottom see-through
refactor: extract MoneyType model
fix: highlight calculator input bg instead of border
fix: animate calculator pad collapse
fix: remove calculator pad divider
fix: center calculator os widget
fix: refine calculator gestures
fix: polish calculator input
fix: dismiss calculator on outside tap
fix: open calculator from os widget
fix: align calculator preview color
fix: group calculator fiat display
fix: lock calculator widget scroll
fix: hide tab bar during calculator input
fix: normalize calculator fiat input
fix: avoid grouped calculator fiat
fix: use calculator number pad
fix: show calculator widget preview
fix: handle calculator keyboard
fix: use calculator input masks

Author: ovitrif

AGENTS.md

@@ -34,7 +34,7 @@ GEO=false E2E=true ./gradlew assembleDevRelease
 E2E=true E2E_BACKEND=network ./gradlew assembleTnetRelease
 
 # Lint using detekt
-./gradlew detekt
+./gradlew detekt --rerun-tasks
 
 # Auto-format using detekt
 ./gradlew detekt --auto-correct
@@ -133,6 +133,13 @@ suspend fun getData() = withContext(Dispatchers.IO) { }
 
 ## Common Patterns
 
+### Naming: Use Context, Avoid Redundant Prefixes
+- 
+- Infer names from the surrounding context: file name, component/class name, enclosing function, module, and call site.
+- Avoid repeating domain prefixes or suffixes that are already obvious from the context, especially for private, nested, local and file-local symbols, i.e., inner-scoped parts invisible outside their context.
+- Only add a prefix/suffix when it resolves real ambiguity at the call site. Preserve existing concise names unless there is a concrete readability or correctness reason to rename them.
+- Examples: `Numpad` or `formatAmount`, instead of `CalculatorNumpad` or `formatCalculatorAmount`.
+
 ### ViewModel State
 
 ```kotlin
@@ -141,7 +148,7 @@ val uiState: StateFlow<UiState> = _uiState.asStateFlow()
 
 fun updateState(action: Action) {
   viewModelScope.launch {
-    _uiState.update { it.copy(/* fields */) }
+    _uiState.update { it.copy(/*…*/) }
   }
 }
 ```
@@ -160,7 +167,6 @@ suspend fun getData(): Result<Data> = withContext(Dispatchers.IO) {
 
 ### Rules
 
-- USE coding rules from `.cursor/default.rules.mdc`
 - ALWAYS run `./gradlew compileDevDebugKotlin` after code changes to verify code compiles
 - ALWAYS run `./gradlew testDevDebugUnitTest` after code changes to verify tests succeed and fix accordingly
 - ALWAYS run `./gradlew detekt` after code changes to check for new lint issues and fix accordingly
@@ -201,7 +207,7 @@ suspend fun getData(): Result<Data> = withContext(Dispatchers.IO) {
 - ALWAYS add trailing commas in multi-line declarations, EXCEPT after a `modifier = ...` last argument — never add a trailing comma there, whether the modifier is a single call (`modifier = Modifier.weight(1f)`) or a chain (`modifier = Modifier.fillMaxWidth().testTag("foo")`)
 - ALWAYS use `navController.navigateTo(route)` for simple navigation; NEVER use raw `navController.navigate(route)` — `navigateTo` prevents duplicate destinations
 - ALWAYS prefer `VerticalSpacer`, `HorizontalSpacer`, `FillHeight` and `FillWidth` over `Spacer` when applicable
-- PREFER declaring small dependant classes, constants, interfaces or top-level functions in the same file with the core class where these are used
+- PREFER declaring small dependant classes, constants, interfaces, or top-level functions in the same file with the core class where these are used
 - ALWAYS create data classes for state AFTER viewModel class in same file
 - ALWAYS return early where applicable, PREFER guard-like `if` conditions like `if (condition) return`
 - USE `docs/` as target dir of saved files when asked to create documentation for new features
@@ -278,3 +284,6 @@ suspend fun getData(): Result<Data> = withContext(Dispatchers.IO) {
 - Use `WakeNodeWorker` to manage the handling of remote notifications received via cloud messages
 - Use `*Services` to wrap rust library code exposed via bindings
 - Use CQRS pattern of Command + Handler like it's done in the `NotifyPaymentReceived` + `NotifyPaymentReceivedHandler` setup
+
+### Other Sources
+- Use coding rules from `.cursor/default.rules.mdc`

README.md

@@ -57,7 +57,7 @@ The following IDE plugins are recommended for development with Android Studio or
 
 **Commands** 
 ```sh
-./gradlew detekt # run analysis + formatting check
+./gradlew detekt --rerun-tasks # run analysis + formatting check (rerun flag ensures issues are always listed.)
 ./gradlew detekt --auto-correct # auto-fix formatting issues
 ```
 Reports are generated in: `app/build/reports/detekt/`.

app/src/main/AndroidManifest.xml

@@ -256,6 +256,19 @@
                 android:resource="@xml/appwidget_info_weather" />
         </receiver>
 
+        <!-- Calculator Widget -->
+        <receiver
+            android:name=".appwidget.ui.calculator.CalculatorGlanceReceiver"
+            android:exported="true"
+            android:label="@string/widgets__calculator__name">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/appwidget_info_calculator" />
+        </receiver>
+
     </application>
 
 </manifest>

app/src/main/java/to/bitkit/appwidget/AppWidgetPreferencesStore.kt

@@ -19,6 +19,8 @@ import to.bitkit.data.dto.WeatherDTO
 import to.bitkit.data.dto.price.GraphPeriod
 import to.bitkit.data.dto.price.PriceDTO
 import to.bitkit.data.serializers.AppWidgetDataSerializer
+import to.bitkit.repositories.CurrencyRepo
+import to.bitkit.repositories.WidgetsRepo
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -32,6 +34,8 @@ private val Context.appWidgetDataStore: DataStore<AppWidgetData> by dataStore(
 interface AppWidgetEntryPoint {
     fun appWidgetPreferencesStore(): AppWidgetPreferencesStore
     fun appWidgetDataRepository(): AppWidgetDataRepository
+    fun widgetsRepo(): WidgetsRepo
+    fun currencyRepo(): CurrencyRepo
 }
 
 @Singleton

app/src/main/java/to/bitkit/appwidget/AppWidgetRefreshWorker.kt

@@ -18,6 +18,8 @@ import dagger.assisted.AssistedInject
 import to.bitkit.appwidget.model.AppWidgetType
 import to.bitkit.appwidget.ui.blocks.BlocksGlanceReceiver
 import to.bitkit.appwidget.ui.blocks.BlocksGlanceWidget
+import to.bitkit.appwidget.ui.calculator.CalculatorGlanceReceiver
+import to.bitkit.appwidget.ui.calculator.CalculatorGlanceWidget
 import to.bitkit.appwidget.ui.facts.FactsGlanceReceiver
 import to.bitkit.appwidget.ui.facts.FactsGlanceWidget
 import to.bitkit.appwidget.ui.headlines.HeadlinesGlanceReceiver
@@ -74,6 +76,7 @@ class AppWidgetRefreshWorker @AssistedInject constructor(
             AppWidgetType.BLOCKS -> BlocksGlanceReceiver::class.java
             AppWidgetType.FACTS -> FactsGlanceReceiver::class.java
             AppWidgetType.WEATHER -> WeatherGlanceReceiver::class.java
+            AppWidgetType.CALCULATOR -> CalculatorGlanceReceiver::class.java
         }
     }
 
@@ -133,6 +136,10 @@ class AppWidgetRefreshWorker @AssistedInject constructor(
                         }
                     WeatherGlanceWidget().updateAll(appContext)
                 }
+
+                AppWidgetType.CALCULATOR -> {
+                    CalculatorGlanceWidget().updateAll(appContext)
+                }
             }
         }
 

app/src/main/java/to/bitkit/appwidget/CalculatorAppWidgetUpdater.kt

@@ -0,0 +1,21 @@
+package to.bitkit.appwidget
+
+import android.content.Context
+import androidx.glance.appwidget.updateAll
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.first
+import to.bitkit.appwidget.model.AppWidgetType
+import to.bitkit.appwidget.ui.calculator.CalculatorGlanceWidget
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class CalculatorAppWidgetUpdater @Inject constructor(
+    @ApplicationContext private val context: Context,
+    private val preferencesStore: AppWidgetPreferencesStore,
+) {
+    suspend fun update() {
+        if (!preferencesStore.hasWidgetsOfType(AppWidgetType.CALCULATOR).first()) return
+        CalculatorGlanceWidget().updateAll(context)
+    }
+}

app/src/main/java/to/bitkit/appwidget/config/AppWidgetConfigActivity.kt

@@ -13,6 +13,7 @@ import to.bitkit.appwidget.AppWidgetRefreshWorker
 import to.bitkit.appwidget.model.AppWidgetType
 import to.bitkit.appwidget.ui.blocks.BlocksGlanceReceiver
 import to.bitkit.appwidget.ui.blocks.BlocksGlanceWidget
+import to.bitkit.appwidget.ui.calculator.CalculatorGlanceReceiver
 import to.bitkit.appwidget.ui.headlines.HeadlinesGlanceReceiver
 import to.bitkit.appwidget.ui.headlines.HeadlinesGlanceWidget
 import to.bitkit.appwidget.ui.price.PriceGlanceReceiver
@@ -62,6 +63,7 @@ class AppWidgetConfigActivity : ComponentActivity() {
                             AppWidgetType.BLOCKS -> BlocksGlanceWidget().updateAll(this@AppWidgetConfigActivity)
                             AppWidgetType.FACTS -> Unit
                             AppWidgetType.WEATHER -> WeatherGlanceWidget().updateAll(this@AppWidgetConfigActivity)
+                            AppWidgetType.CALCULATOR -> Unit
                         }
                         AppWidgetRefreshWorker.enqueue(this@AppWidgetConfigActivity)
                         val result = Intent().putExtra(
@@ -89,6 +91,7 @@ class AppWidgetConfigActivity : ComponentActivity() {
             HeadlinesGlanceReceiver::class.java.name -> AppWidgetType.HEADLINES
             BlocksGlanceReceiver::class.java.name -> AppWidgetType.BLOCKS
             WeatherGlanceReceiver::class.java.name -> AppWidgetType.WEATHER
+            CalculatorGlanceReceiver::class.java.name -> AppWidgetType.CALCULATOR
             else -> {
                 Logger.warn(
                     "Encountered unknown provider class '$providerClass' " +

app/src/main/java/to/bitkit/appwidget/config/AppWidgetConfigScreen.kt

@@ -48,6 +48,8 @@ fun AppWidgetConfigScreen(
 
         AppWidgetType.FACTS -> Unit
 
+        AppWidgetType.CALCULATOR -> Unit
+
         AppWidgetType.WEATHER -> WeatherConfigContent(
             state = state,
             onSelectOption = { viewModel.selectWeatherOption(it) },

app/src/main/java/to/bitkit/appwidget/config/AppWidgetConfigViewModel.kt

@@ -169,6 +169,7 @@ class AppWidgetConfigViewModel @Inject constructor(
                 AppWidgetType.BLOCKS -> it.copy(blocksPreferences = BlocksPreferences())
                 AppWidgetType.FACTS -> it
                 AppWidgetType.WEATHER -> it.copy(weatherPreferences = WeatherPreferences())
+                AppWidgetType.CALCULATOR -> it
             }
         }
     }
@@ -184,6 +185,7 @@ class AppWidgetConfigViewModel @Inject constructor(
                 AppWidgetType.BLOCKS -> saveBlocks(state)
                 AppWidgetType.FACTS -> Unit
                 AppWidgetType.WEATHER -> saveWeather(state)
+                AppWidgetType.CALCULATOR -> Unit
             }
 
             onComplete()

app/src/main/java/to/bitkit/appwidget/model/AppWidgetPreferences.kt

@@ -16,6 +16,7 @@ enum class AppWidgetType {
     BLOCKS,
     FACTS,
     WEATHER,
+    CALCULATOR,
 }
 
 @Stable