feature: Secure screen option in settings for enhanced privacy

app/src/main/java/com/aritra/notify/components/actions/SettingsSwitchCard.kt

@@ -2,6 +2,7 @@ package com.aritra.notify.components.actions
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -57,10 +58,10 @@ fun SettingsSwitchCard(
                 fontSize = 18.sp,
                 fontFamily = FontFamily(Font(R.font.poppins_semibold))
             )
+            Spacer(modifier = Modifier.weight(1f))
             Switch(
                 modifier = Modifier
-                    .semantics { contentDescription = "Theme Switch" }
-                    .padding(start = 130.dp),
+                    .semantics { contentDescription = "Theme Switch" },
                 checked = isChecked,
                 onCheckedChange = onCheckedChange
             )

app/src/main/java/com/aritra/notify/di/DataStoreUtil.kt

@@ -14,6 +14,7 @@ class DataStoreUtil @Inject constructor(context: Context) {
     companion object {
         private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "settings")
         val IS_DARK_MODE_KEY = booleanPreferencesKey("dark_mode")
+        val IS_SECURE_ENV_KEY = booleanPreferencesKey("secure_env")
         val IS_BIOMETRIC_AUTH_SET_KEY = booleanPreferencesKey("biometric_auth")
     }
 }

app/src/main/java/com/aritra/notify/di/ThemeState.kt

@@ -1,3 +1,3 @@
 package com.aritra.notify.di
 
-data class ThemeState(val isDarkMode: Boolean)
+data class ThemeState(val isDarkMode: Boolean, val isSecureEnv: Boolean)

app/src/main/java/com/aritra/notify/ui/screens/settingsScreen/SettingsScreen.kt

@@ -93,6 +93,15 @@ fun SettingsScreen() {
                         fontFamily = FontFamily(Font(R.font.poppins_medium))
                     )
                     Spacer(modifier = Modifier.height(6.dp))
+                    SettingsSwitchCard(
+                        text = stringResource(id = R.string.secure_screen),
+                        icon = painterResource(id = R.drawable.phonelink_lock),
+                        isChecked = themeState.isSecureEnv,
+                        onCheckedChange = {
+                            themeViewModel.toggleSecureEnv()
+                        }
+                    )
+                    Spacer(modifier = Modifier.height(6.dp))
                     SettingsSwitchCard(
                         text = stringResource(id = R.string.biometric),
                         icon = painterResource(id = R.drawable.ic_fingerprint),

app/src/main/java/com/aritra/notify/ui/theme/Theme.kt

@@ -2,6 +2,7 @@ package com.aritra.notify.ui.theme
 
 import android.app.Activity
 import android.os.Build
+import android.view.WindowManager
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.dynamicDarkColorScheme
@@ -93,6 +94,11 @@ fun NotifyTheme(
         SideEffect {
             val window = (view.context as Activity).window
             window.statusBarColor = colorScheme.background.toArgb()
+            if (themeState.isSecureEnv) {
+                window.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
+            } else {
+                window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
+            }
             WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = !themeState.isDarkMode
         }
     }

app/src/main/java/com/aritra/notify/viewmodel/ThemeViewModel.kt

@@ -5,6 +5,7 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.aritra.notify.di.DataStoreUtil
 import com.aritra.notify.di.DataStoreUtil.Companion.IS_DARK_MODE_KEY
+import com.aritra.notify.di.DataStoreUtil.Companion.IS_SECURE_ENV_KEY
 import com.aritra.notify.di.ThemeState
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
@@ -17,15 +18,18 @@ import javax.inject.Inject
 @HiltViewModel
 class ThemeViewModel @Inject constructor(dataStoreUtil: DataStoreUtil) : ViewModel() {
 
-    private val _themeState = MutableStateFlow(ThemeState(false))
+    private val _themeState = MutableStateFlow(ThemeState(isDarkMode = false, isSecureEnv = false))
     val themeState: StateFlow<ThemeState> = _themeState
 
     private val dataStore = dataStoreUtil.dataStore
 
     init {
         viewModelScope.launch(Dispatchers.IO) {
             dataStore.data.map { preferences ->
-                ThemeState(preferences[IS_DARK_MODE_KEY] ?: false)
+                ThemeState(
+                    isDarkMode = preferences[IS_DARK_MODE_KEY] ?: false,
+                    isSecureEnv = preferences[IS_SECURE_ENV_KEY] ?: false
+                )
             }.collect {
                 _themeState.value = it
             }
@@ -39,4 +43,12 @@ class ThemeViewModel @Inject constructor(dataStoreUtil: DataStoreUtil) : ViewMod
             }
         }
     }
+
+    fun toggleSecureEnv() {
+        viewModelScope.launch(Dispatchers.IO) {
+            dataStore.edit { preferences ->
+                preferences[IS_SECURE_ENV_KEY] = !(preferences[IS_SECURE_ENV_KEY] ?: false)
+            }
+        }
+    }
 }

app/src/main/res/drawable/phonelink_lock.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="#000000"
+      android:pathData="M622,622Q608,622 597,611Q586,600 586,586L586,482Q586,468 597,457Q608,446 622,446L627,446L627,406Q627,377 646.5,357.5Q666,338 695,338Q724,338 743.5,357.5Q763,377 763,406L763,446L768,446Q782,446 792,457Q802,468 802,482L802,586Q802,600 791,611Q780,622 766,622L622,622ZM655,446L735,446L735,406Q735,389 723.5,377.5Q712,366 695,366Q678,366 666.5,377.5Q655,389 655,406L655,446ZM312,868Q287,868 269.5,850.5Q252,833 252,808L252,152Q252,127 269.5,109.5Q287,92 312,92L648,92Q673,92 690.5,109.5Q708,127 708,152L708,276L680,276L680,214L280,214L280,746L680,746L680,684L708,684L708,808Q708,833 690.5,850.5Q673,868 648,868L312,868ZM280,774L280,808Q280,820 290,830Q300,840 312,840L648,840Q660,840 670,830Q680,820 680,808L680,774L280,774ZM280,186L680,186L680,152Q680,140 670,130Q660,120 648,120L312,120Q300,120 290,130Q280,140 280,152L280,186ZM280,186L280,152Q280,140 280,130Q280,120 280,120L280,120Q280,120 280,130Q280,140 280,152L280,186L280,186ZM280,774L280,774L280,808Q280,820 280,830Q280,840 280,840L280,840Q280,840 280,830Q280,820 280,808L280,774Z"/>
+</vector>

app/src/main/res/values/strings.xml

@@ -51,4 +51,5 @@
     <string name="notification_permission_description">The notification permission is important for this app. Please grant the permission.</string>
     <string name="notification_permission_settings">The notification permission is important for this app. Please navigate to your device settings and enable notifications for Make it So.</string>
     <string name="ok">OK</string>
+    <string name="secure_screen">Secure Screen</string>
 </resources>