Add setting (off by default) to prevent screenshots.

LemmyNet · Jun 15, 2023 · d505a97 · d505a97
1 parent eb7a7c4
commit d505a97
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Showing 4 changed files with 39 additions and 1 deletion.
diff --git a/app/src/main/java/com/jerboa/MainActivity.kt b/app/src/main/java/com/jerboa/MainActivity.kt
@@ -8,6 +8,7 @@ import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.util.Patterns
+import android.view.WindowManager
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.viewModels
@@ -26,6 +27,7 @@ import com.jerboa.db.AccountRepository
 import com.jerboa.db.AccountViewModel
 import com.jerboa.db.AccountViewModelFactory
 import com.jerboa.db.AppDB
+import com.jerboa.db.AppSettings
 import com.jerboa.db.AppSettingsRepository
 import com.jerboa.db.AppSettingsViewModel
 import com.jerboa.db.AppSettingsViewModelFactory
@@ -98,6 +100,14 @@ class MainActivity : ComponentActivity() {
         AppSettingsViewModelFactory((application as JerboaApplication).appSettingsRepository)
     }
 
+    private fun updateWindowFlags(appSettings: AppSettings) {
+        if (appSettings.secureWindow) {
+            window.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
+        } else {
+            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -111,6 +121,8 @@ class MainActivity : ComponentActivity() {
             val account = getCurrentAccount(accountViewModel)
             val appSettings by appSettingsViewModel.appSettings.observeAsState()
 
+            appSettings?.let { updateWindowFlags(it) }
+
             JerboaTheme(
                 appSettings = appSettings,
             ) {

diff --git a/app/src/main/java/com/jerboa/db/AppDB.kt b/app/src/main/java/com/jerboa/db/AppDB.kt
@@ -94,6 +94,11 @@ data class AppSettings(
         defaultValue = "0",
     )
     val usePrivateTabs: Boolean,
+    @ColumnInfo(
+        name = "secure_window",
+        defaultValue = "0",
+    )
+    val secureWindow: Boolean,
 )
 
 @Dao
@@ -367,8 +372,17 @@ val MIGRATION_13_14 = object : Migration(13, 14) {
     }
 }
 
+val MIGRATION_14_15 = object : Migration(14, 15) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL(UPDATE_APP_CHANGELOG_UNVIEWED)
+        database.execSQL(
+            "ALTER TABLE AppSettings add column secure_window INTEGER NOT NULL default 0",
+        )
+    }
+}
+
 @Database(
-    version = 14,
+    version = 15,
     entities = [Account::class, AppSettings::class],
     exportSchema = true,
 )
@@ -406,6 +420,7 @@ abstract class AppDB : RoomDatabase() {
                         MIGRATION_11_12,
                         MIGRATION_12_13,
                         MIGRATION_13_14,
+                        MIGRATION_14_15,
                     )
                     // Necessary because it can't insert data on creation
                     .addCallback(object : Callback() {

diff --git a/app/src/main/java/com/jerboa/ui/components/settings/lookandfeel/LookAndFeelActivity.kt b/app/src/main/java/com/jerboa/ui/components/settings/lookandfeel/LookAndFeelActivity.kt
@@ -62,6 +62,8 @@ fun LookAndFeelActivity(
     val useCustomTabsState = rememberBooleanSettingState(settings?.useCustomTabs ?: true)
     val usePrivateTabsState = rememberBooleanSettingState(settings?.usePrivateTabs ?: false)
 
+    val secureWindowState = rememberBooleanSettingState(settings?.secureWindow ?: false)
+
     val snackbarHostState = remember { SnackbarHostState() }
 
     val scrollState = rememberScrollState()
@@ -81,6 +83,7 @@ fun LookAndFeelActivity(
                 showVotingArrowsInListView = showVotingArrowsInListViewState.value,
                 useCustomTabs = useCustomTabsState.value,
                 usePrivateTabs = usePrivateTabsState.value,
+                secureWindow = secureWindowState.value,
             ),
         )
     }
@@ -209,6 +212,13 @@ fun LookAndFeelActivity(
                     },
                     onCheckedChange = { updateAppSettings() },
                 )
+                SettingsCheckbox(
+                    state = secureWindowState,
+                    title = {
+                        Text(text = stringResource(R.string.look_and_feel_secure_window))
+                    },
+                    onCheckedChange = { updateAppSettings() },
+                )
             }
         },
     )

diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -181,6 +181,7 @@
     <string name="look_and_feel_post_view_card">Card</string>
     <string name="look_and_feel_post_view_list">List</string>
     <string name="look_and_feel_post_view_small_card">Small Card</string>
+    <string name="look_and_feel_secure_window">Prevent Screenshots</string>
     <string name="look_and_feel_show_action_bar_for_comments">Show action bar by default for comments</string>
     <string name="look_and_feel_show_navigation_bar">Show navigation bar</string>
     <string name="look_and_feel_show_voting_arrows_list_view">Show voting arrows in list view</string>