Quick settings tile

app/src/main/AndroidManifest.xml

@@ -88,6 +88,23 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths" />
         </provider>
+
+        <service
+            android:name=".tile.PangolinTileService"
+            android:exported="true"
+            android:icon="@drawable/ic_tile"
+            android:label="Pangolin"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.service.quicksettings.ACTIVE_TILE"
+                android:value="true" />
+            <meta-data
+                android:name="android.service.quicksettings.TOGGLEABLE_TILE"
+                android:value="true" />
+        </service>
     </application>
 
 </manifest>

app/src/main/java/net/pangolin/Pangolin/MainActivity.kt

@@ -145,6 +145,17 @@ class MainActivity : BaseNavigationActivity() {
         contentBinding.loadingOverlay.visibility = android.view.View.VISIBLE
         contentBinding.mainContent.visibility = android.view.View.GONE
 
+        if (intent?.getBooleanExtra("auto_connect", false) == true) {
+            val currentState = tunnelManager.tunnelState.value
+            if (!currentState.isServiceRunning && !currentState.isConnecting) {
+                lifecycleScope.launch {
+                    tunnelManager.connect()
+                }
+            }
+
+            intent.removeExtra("auto_connect")
+        }
+
         // Setup toggle switch listener with helper function
         fun setupToggleListener() {
             contentBinding.toggleConnect.setOnCheckedChangeListener { _, isChecked ->

app/src/main/java/net/pangolin/Pangolin/tile/PangolinTileService.kt

@@ -0,0 +1,113 @@
+package net.pangolin.Pangolin.tile
+
+import android.annotation.SuppressLint
+import android.app.PendingIntent
+import android.content.Intent
+import android.graphics.drawable.Icon
+import android.os.Build
+import android.service.quicksettings.Tile
+import android.service.quicksettings.TileService
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import net.pangolin.Pangolin.MainActivity
+import net.pangolin.Pangolin.util.TunnelManager
+
+class PangolinTileService : TileService() {
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main.immediate)
+    private var stateWatchJob: kotlinx.coroutines.Job? = null
+
+    override fun onStartListening() {
+        super.onStartListening()
+        watchState()
+    }
+
+    override fun onStopListening() {
+        super.onStopListening()
+        stateWatchJob?.cancel()
+        stateWatchJob = null
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        scope.cancel()
+    }
+
+    @SuppressLint("StartActivityAndCollapseDeprecated")
+    private fun watchState() {
+        val tunnelManager = TunnelManager.getInstance() ?: run {
+            setTileState(active = false, label = "Unavailable", clickable = false)
+
+            val intent = Intent(this, MainActivity::class.java).apply {
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK
+                putExtra("auto_connect", true)
+            }
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                val pendingIntent = PendingIntent.getActivity(
+                    this,
+                    0,
+                    intent,
+                    PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+                )
+                startActivityAndCollapse(pendingIntent)
+            } else {
+                @Suppress("DEPRECATION")
+                startActivityAndCollapse(intent)
+            }
+
+            return
+        }
+
+        stateWatchJob?.cancel()
+        stateWatchJob = scope.launch {
+            tunnelManager.tunnelState.collect { state ->
+                setTileState(
+                    active = state.isServiceRunning,
+                    label = state.statusMessage,
+                    clickable = state.canDisable || state.canEnable
+                )
+            }
+        }
+    }
+
+    override fun onClick() {
+        super.onClick()
+
+        val tunnelManager = TunnelManager.getInstance() ?: return
+        val state = tunnelManager.tunnelState.value
+
+        if (!state.canDisable && !state.canEnable) {
+            return
+        }
+
+        if (state.isServiceRunning || state.isConnecting) {
+            scope.launch {
+                tunnelManager.disconnect()
+            }
+        } else {
+            scope.launch {
+                tunnelManager.connect()
+            }
+        }
+    }
+
+    private fun setTileState(active: Boolean, label: String, clickable: Boolean) {
+        val tile = qsTile ?: return
+
+        tile.contentDescription = "Pangolin VPN"
+        tile.icon = Icon.createWithResource(this, net.pangolin.Pangolin.R.drawable.ic_tile)
+
+        tile.state = when {
+            !clickable -> Tile.STATE_UNAVAILABLE
+            active -> Tile.STATE_ACTIVE
+            else -> Tile.STATE_INACTIVE
+        }
+
+        tile.label = label
+
+        tile.updateTile()
+    }
+}

app/src/main/java/net/pangolin/Pangolin/util/TunnelManager.kt

@@ -1,6 +1,8 @@
 package net.pangolin.Pangolin.util
 
+import android.content.ComponentName
 import android.content.Context
+import android.service.quicksettings.TileService
 import android.util.Log
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -19,6 +21,7 @@ import net.pangolin.Pangolin.PacketTunnel.GoBackend
 import net.pangolin.Pangolin.PacketTunnel.InitConfig
 import net.pangolin.Pangolin.PacketTunnel.Tunnel
 import net.pangolin.Pangolin.PacketTunnel.TunnelConfig
+import net.pangolin.Pangolin.tile.PangolinTileService
 import java.io.File
 
 /**
@@ -129,13 +132,13 @@ class TunnelManager private constructor(
         val isConnected = status.connected && status.registered == true
         val isRegistered = status.registered == true
 
-        _tunnelState.value = currentState.copy(
+        updateState(currentState.copy(
             isSocketConnected = status.connected,
             isRegistered = isRegistered,
             isConnecting = !isConnected && status.connected,
             statusMessage = determineStatusMessage(status),
             errorMessage = if (status.terminated) "Connection terminated" else null
-        )
+        ))
     }
 
     /**
@@ -416,6 +419,8 @@ class TunnelManager private constructor(
      */
     private fun updateState(newState: TunnelState) {
         _tunnelState.value = newState
+
+        notifyTileUpdate()
     }
 
     /**
@@ -462,6 +467,13 @@ class TunnelManager private constructor(
         scope.cancel()
     }
 
+    private fun notifyTileUpdate() {
+        TileService.requestListeningState(
+            context,
+            ComponentName(context, PangolinTileService::class.java)
+        )
+    }
+
     companion object {
         @Volatile
         private var instance: TunnelManager? = null

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

@@ -0,0 +1,17 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="238.34"
+    android:viewportHeight="252.73">
+  <group android:scaleX="1.0"
+      android:scaleY="1.0"
+      android:translateX="0"
+      android:translateY="0">
+    <path
+        android:pathData="m200.54,84.15c4.96,0 8.97,4.02 8.97,8.97 0,4.96 -4.02,8.97 -8.97,8.97 -4.96,0 -8.97,-4.02 -8.97,-8.97 0,-4.96 4.02,-8.97 8.97,-8.97zM235.77,121.6c-0.9,29.81 -23.66,69.21 -54.51,79.34 -36.04,11.84 -63.41,-5.92 -72.08,-26.74 -6.76,-16.22 -1.65,-35.62 10.96,-43.84 10.65,-6.94 30.49,-8.77 47.15,2.19 -5.86,-15.34 -21.62,-25.43 -35.59,-28.49 -13.97,-3.07 -28.38,0.44 -38.75,5.7 13.29,-14.69 44.41,-28.95 78.24,-10.96 22.68,12.05 32.44,28.93 42.05,51.73C238.48,111.95 220.91,65.49 190.27,37.87 159.04,9.71 116.84,-1.59 84.55,0.18 95.21,6.75 107.73,16.14 119.29,27.13 68.18,20.77 26.06,32.39 0,67.82 14.56,64.95 33.75,63.15 52.86,64.09 15.62,90.33 -6.01,134.46 4.99,180.51c6.72,-11.74 16.77,-25.85 28.73,-38.63 -3.68,34.37 1.43,80.84 45.62,110.85 -2.26,-9.42 -4.08,-20.88 -4.91,-33.02 20.67,16.13 50.69,29.42 87.92,20.24 65.78,-16.22 83.35,-79.78 73.44,-118.36"
+        android:strokeWidth="0.0776283"
+        android:fillColor="#f36118"
+        android:strokeColor="#00000000"
+        android:fillType="nonZero"/>
+  </group>
+</vector>