Add support for Bell messages

app/src/androidTest/java/com/gaurav/avnc/vnc/VncClientTest.kt

@@ -28,6 +28,7 @@ class VncClientTest {
         override fun onGotXCutText(text: String) {
             cutText = text
         }
+        override fun onBell() {}
     }
 
 

app/src/main/java/com/gaurav/avnc/util/AppPreferences.kt

@@ -10,6 +10,7 @@ package com.gaurav.avnc.util
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.media.ToneGenerator
 import androidx.core.content.edit
 import androidx.lifecycle.LiveData
 import androidx.preference.PreferenceManager
@@ -24,6 +25,7 @@ class AppPreferences(context: Context) {
 
     inner class UI {
         val theme = StringLivePref("theme", "system")
+        var bell by BooleanPref("bell_enabled", true)
         var preferAdvancedEditor by BooleanPref("prefer_advanced_editor", false)
         val sortServerList = BooleanLivePref("sort_server_list", false)
     }

app/src/main/java/com/gaurav/avnc/util/Tones.kt

@@ -0,0 +1,17 @@
+package com.gaurav.avnc.util
+
+import android.media.AudioManager
+import android.media.ToneGenerator
+import android.util.Log
+
+object Tones {
+    private val notifications = ToneGenerator(AudioManager.STREAM_NOTIFICATION, 100)
+
+    /**
+     * @param tone a `TONE_` constant from [ToneGenerator].
+     */
+    fun notify(tone: Int) {
+        Log.i("Tones", "Notify with tone $tone")
+        notifications.startTone(tone)
+    }
+}

app/src/main/java/com/gaurav/avnc/viewmodel/VncViewModel.kt

@@ -10,6 +10,7 @@ package com.gaurav.avnc.viewmodel
 
 import android.app.Application
 import android.graphics.RectF
+import android.media.ToneGenerator
 import android.util.Log
 import android.widget.Toast
 import androidx.lifecycle.MutableLiveData
@@ -20,6 +21,7 @@ import com.gaurav.avnc.ui.vnc.FrameScroller
 import com.gaurav.avnc.ui.vnc.FrameState
 import com.gaurav.avnc.ui.vnc.FrameView
 import com.gaurav.avnc.util.LiveRequest
+import com.gaurav.avnc.util.Tones
 import com.gaurav.avnc.util.broadcastWoLPackets
 import com.gaurav.avnc.util.getClipboardText
 import com.gaurav.avnc.util.getUnknownCertificateMessage
@@ -507,4 +509,11 @@ class VncViewModel(app: Application) : BaseViewModel(app), VncClient.Observer {
     override fun onPointerMoved(x: Int, y: Int) {
         frameViewRef.get()?.requestRender()
     }
-}
+
+    override fun onBell() {
+        if (pref.ui.bell) {
+            Tones.notify(ToneGenerator.TONE_PROP_BEEP)
+        }
+    }
+
+}

app/src/main/java/com/gaurav/avnc/vnc/VncClient.kt

@@ -53,8 +53,7 @@ class VncClient(private val observer: Observer) {
         fun onFramebufferUpdated()
         fun onFramebufferSizeChanged(width: Int, height: Int)
         fun onPointerMoved(x: Int, y: Int)
-
-        //fun onBell()
+        fun onBell()
     }
 
     /**
@@ -428,7 +427,7 @@ class VncClient(private val observer: Observer) {
 
 
     @Keep
-    private fun cbBell() = Unit // observer.onBell()
+    private fun cbBell() = observer.onBell()
 
     @Keep
     private fun cbHandleCursorPos(x: Int, y: Int) {

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

@@ -240,4 +240,5 @@
     <string name="msg_gesture_style_locked_to_touchpad">Style de geste \'Touchpad\' est actif</string>
     <string name="pref_long_press_swipe_disabled_summary">Désactivé par la valeur actuelle du geste <b>Pression longue</b></string>
     <string name="pref_toolbar_open_with_swipe">Faites glisser depuis le bord pour ouvrir</string>
+    <string name="pref_bell">Sonnerie</string>
 </resources>

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

@@ -227,4 +227,4 @@
         <item>Item 2</item>
         <item>Item 3</item>
     </string-array>
-</resources>
+</resources>

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

@@ -181,6 +181,7 @@
     <string name="pref_theme_option_system">System</string>
     <string name="pref_theme_option_dark">Dark</string>
     <string name="pref_theme_option_light">Light</string>
+    <string name="pref_bell">Bell</string>
     <string name="pref_prefer_advanced_editor">Directly open advanced server options</string>
     <string name="pref_sort_server_list">Sort saved servers by name</string>
     <string name="pref_gesture">Gestures</string>

app/src/main/res/xml/pref_appearance.xml

@@ -17,6 +17,11 @@
         app:title="@string/pref_theme"
         app:useSimpleSummaryProvider="true" />
 
+    <SwitchPreference
+        app:defaultValue="true"
+        app:key="bell_enabled"
+        app:title="@string/pref_bell"/>
+
     <SwitchPreference
         app:defaultValue="false"
         app:key="sort_server_list"